Merge pull request #36212 from akien-mga/remove-battery-power-api

Remove incomplete battery status/power API

41 files changed, 1 insertions, 2013 deletions

diff --git a/COPYRIGHT.txt b/COPYRIGHT.txt
index de9936d96b..cdc59a4596 100644
--- a/COPYRIGHT.txt
+++ b/COPYRIGHT.txt
@@ -71,16 +71,6 @@ Comment: The Android Open Source Project
 Copyright: 2002, Google Inc.
 License: Apache-2.0
 
-Files: ./platform/android/power_android.cpp
- ./platform/osx/power_osx.cpp
- ./platform/windows/power_windows.cpp
- ./platform/x11/power_x11.cpp
-Comment: Simple DirectMedia Layer
-Copyright: 1997-2017, Sam Lantinga
- 2007-2020, Juan Linietsky, Ariel Manzur.
- 2014-2020, Godot Engine contributors.
-License: Expat and Zlib
-
 Files: ./scene/animation/tween_interpolaters.cpp
 Comment: Penner Easing
 Copyright: 2001, Robert Penner
diff --git a/core/bind/core_bind.cpp b/core/bind/core_bind.cpp
index 9413772f84..d7614c5a82 100644
--- a/core/bind/core_bind.cpp
+++ b/core/bind/core_bind.cpp
@@ -587,18 +587,6 @@ bool _OS::is_vsync_via_compositor_enabled() const {
 	return OS::get_singleton()->is_vsync_via_compositor_enabled();
 }
 
-_OS::PowerState _OS::get_power_state() {
-	return _OS::PowerState(OS::get_singleton()->get_power_state());
-}
-
-int _OS::get_power_seconds_left() {
-	return OS::get_singleton()->get_power_seconds_left();
-}
-
-int _OS::get_power_percent_left() {
-	return OS::get_singleton()->get_power_percent_left();
-}
-
 bool _OS::has_feature(const String &p_feature) const {
 
 	return OS::get_singleton()->has_feature(p_feature);
@@ -1348,10 +1336,6 @@ void _OS::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("has_feature", "tag_name"), &_OS::has_feature);
 
-	ClassDB::bind_method(D_METHOD("get_power_state"), &_OS::get_power_state);
-	ClassDB::bind_method(D_METHOD("get_power_seconds_left"), &_OS::get_power_seconds_left);
-	ClassDB::bind_method(D_METHOD("get_power_percent_left"), &_OS::get_power_percent_left);
-
 	ClassDB::bind_method(D_METHOD("request_permission", "name"), &_OS::request_permission);
 	ClassDB::bind_method(D_METHOD("request_permissions"), &_OS::request_permissions);
 	ClassDB::bind_method(D_METHOD("get_granted_permissions"), &_OS::get_granted_permissions);
@@ -1439,12 +1423,6 @@ void _OS::_bind_methods() {
 	BIND_ENUM_CONSTANT(SYSTEM_DIR_MUSIC);
 	BIND_ENUM_CONSTANT(SYSTEM_DIR_PICTURES);
 	BIND_ENUM_CONSTANT(SYSTEM_DIR_RINGTONES);
-
-	BIND_ENUM_CONSTANT(POWERSTATE_UNKNOWN);
-	BIND_ENUM_CONSTANT(POWERSTATE_ON_BATTERY);
-	BIND_ENUM_CONSTANT(POWERSTATE_NO_BATTERY);
-	BIND_ENUM_CONSTANT(POWERSTATE_CHARGING);
-	BIND_ENUM_CONSTANT(POWERSTATE_CHARGED);
 }
 
 _OS::_OS() {
diff --git a/core/bind/core_bind.h b/core/bind/core_bind.h
index 18bb1408e3..39bed791d0 100644
--- a/core/bind/core_bind.h
+++ b/core/bind/core_bind.h
@@ -105,14 +105,6 @@ public:
 		VIDEO_DRIVER_VULKAN,
 	};
 
-	enum PowerState {
-		POWERSTATE_UNKNOWN, // Cannot determine power status.
-		POWERSTATE_ON_BATTERY, // Not plugged in, running on the battery.
-		POWERSTATE_NO_BATTERY, // Plugged in, no battery available.
-		POWERSTATE_CHARGING, // Plugged in, charging battery.
-		POWERSTATE_CHARGED // Plugged in, battery charged.
-	};
-
 	enum Weekday {
 		DAY_SUNDAY,
 		DAY_MONDAY,
@@ -346,10 +338,6 @@ public:
 	void set_vsync_via_compositor(bool p_enable);
 	bool is_vsync_via_compositor_enabled() const;
 
-	PowerState get_power_state();
-	int get_power_seconds_left();
-	int get_power_percent_left();
-
 	bool has_feature(const String &p_feature) const;
 
 	bool request_permission(const String &p_name);
@@ -362,7 +350,6 @@ public:
 };
 
 VARIANT_ENUM_CAST(_OS::VideoDriver);
-VARIANT_ENUM_CAST(_OS::PowerState);
 VARIANT_ENUM_CAST(_OS::Weekday);
 VARIANT_ENUM_CAST(_OS::Month);
 VARIANT_ENUM_CAST(_OS::SystemDir);
diff --git a/core/os/os.cpp b/core/os/os.cpp
index 13be4a5c37..d1b6ccab54 100644
--- a/core/os/os.cpp
+++ b/core/os/os.cpp
@@ -586,16 +586,6 @@ bool OS::is_vsync_via_compositor_enabled() const {
 	return _vsync_via_compositor;
 }
 
-OS::PowerState OS::get_power_state() {
-	return POWERSTATE_UNKNOWN;
-}
-int OS::get_power_seconds_left() {
-	return -1;
-}
-int OS::get_power_percent_left() {
-	return -1;
-}
-
 void OS::set_has_server_feature_callback(HasServerFeatureCallback p_callback) {
 
 	has_server_feature_callback = p_callback;
diff --git a/core/os/os.h b/core/os/os.h
index 1bb910cb0d..e4661e4583 100644
--- a/core/os/os.h
+++ b/core/os/os.h
@@ -78,14 +78,6 @@ public:
 	typedef void (*ImeCallback)(void *p_inp, String p_text, Point2 p_selection);
 	typedef bool (*HasServerFeatureCallback)(const String &p_feature);
 
-	enum PowerState {
-		POWERSTATE_UNKNOWN, /**< cannot determine power status */
-		POWERSTATE_ON_BATTERY, /**< Not plugged in, running on the battery */
-		POWERSTATE_NO_BATTERY, /**< Plugged in, no battery available */
-		POWERSTATE_CHARGING, /**< Plugged in, charging battery */
-		POWERSTATE_CHARGED /**< Plugged in, battery charged */
-	};
-
 	enum RenderThreadMode {
 
 		RENDER_THREAD_UNSAFE,
@@ -517,10 +509,6 @@ public:
 	void set_vsync_via_compositor(bool p_enable);
 	bool is_vsync_via_compositor_enabled() const;
 
-	virtual OS::PowerState get_power_state();
-	virtual int get_power_seconds_left();
-	virtual int get_power_percent_left();
-
 	virtual void force_process_input(){};
 	bool has_feature(const String &p_feature);
 
@@ -542,6 +530,4 @@ public:
 	virtual ~OS();
 };
 
-VARIANT_ENUM_CAST(OS::PowerState);
-
 #endif
diff --git a/doc/classes/OS.xml b/doc/classes/OS.xml
index b3b77b0b26..d361ea83e6 100644
--- a/doc/classes/OS.xml
+++ b/doc/classes/OS.xml
@@ -280,30 +280,6 @@
 				Returns the name of the host OS. Possible values are: [code]"Android"[/code], [code]"Haiku"[/code], [code]"iOS"[/code], [code]"HTML5"[/code], [code]"OSX"[/code], [code]"Server"[/code], [code]"Windows"[/code], [code]"UWP"[/code], [code]"X11"[/code].
 			</description>
 		</method>
-		<method name="get_power_percent_left">
-			<return type="int">
-			</return>
-			<description>
-				Returns the amount of battery left in the device as a percentage. Returns [code]-1[/code] if power state is unknown.
-				[b]Note:[/b] This method is implemented on Linux, macOS and Windows.
-			</description>
-		</method>
-		<method name="get_power_seconds_left">
-			<return type="int">
-			</return>
-			<description>
-				Returns an estimate of the time left in seconds before the device runs out of battery. Returns [code]-1[/code] if power state is unknown.
-				[b]Note:[/b] This method is implemented on Linux, macOS and Windows.
-			</description>
-		</method>
-		<method name="get_power_state">
-			<return type="int" enum="OS.PowerState">
-			</return>
-			<description>
-				Returns the current state of the device regarding battery and power. See [enum PowerState] constants.
-				[b]Note:[/b] This method is implemented on Linux, macOS and Windows.
-			</description>
-		</method>
 		<method name="get_process_id" qualifiers="const">
 			<return type="int">
 			</return>
@@ -1081,20 +1057,5 @@
 		<constant name="SYSTEM_DIR_RINGTONES" value="7" enum="SystemDir">
 			Ringtones directory path.
 		</constant>
-		<constant name="POWERSTATE_UNKNOWN" value="0" enum="PowerState">
-			Unknown powerstate.
-		</constant>
-		<constant name="POWERSTATE_ON_BATTERY" value="1" enum="PowerState">
-			Unplugged, running on battery.
-		</constant>
-		<constant name="POWERSTATE_NO_BATTERY" value="2" enum="PowerState">
-			Plugged in, no battery available.
-		</constant>
-		<constant name="POWERSTATE_CHARGING" value="3" enum="PowerState">
-			Plugged in, battery charging.
-		</constant>
-		<constant name="POWERSTATE_CHARGED" value="4" enum="PowerState">
-			Plugged in, battery fully charged.
-		</constant>
 	</constants>
 </class>
diff --git a/platform/android/SCsub b/platform/android/SCsub
index 3ff5b8278a..fd2a774c71 100644
--- a/platform/android/SCsub
+++ b/platform/android/SCsub
@@ -18,7 +18,6 @@ android_files = [
     'java_class_wrapper.cpp',
     'java_godot_wrapper.cpp',
     'java_godot_io_wrapper.cpp',
-    #'power_android.cpp'
 ]
 
 env_android = env.Clone()
diff --git a/platform/android/export/export.cpp b/platform/android/export/export.cpp
index 642b045f5b..952bc3d28f 100644
--- a/platform/android/export/export.cpp
+++ b/platform/android/export/export.cpp
@@ -385,7 +385,7 @@ class EditorExportPlatformAndroid : public EditorExportPlatform {
 				ea->device_lock->unlock();
 			}
 
-			uint64_t sleep = OS::get_singleton()->get_power_state() == OS::POWERSTATE_ON_BATTERY ? 1000 : 100;
+			uint64_t sleep = 200;
 			uint64_t wait = 3000000;
 			uint64_t time = OS::get_singleton()->get_ticks_usec();
 			while (OS::get_singleton()->get_ticks_usec() - time < wait) {
diff --git a/platform/android/os_android.cpp b/platform/android/os_android.cpp
index e86e373630..15e3ac48c7 100644
--- a/platform/android/os_android.cpp
+++ b/platform/android/os_android.cpp
@@ -152,8 +152,6 @@ Error OS_Android::initialize(const VideoMode &p_desired, int p_video_driver, int
 	input = memnew(InputDefault);
 	input->set_fallback_mapping(godot_java->get_input_fallback_mapping());
 
-	//power_manager = memnew(PowerAndroid);
-
 	return OK;
 }
 
diff --git a/platform/android/os_android.h b/platform/android/os_android.h
index c2f9a0992f..ec6ffe5438 100644
--- a/platform/android/os_android.h
+++ b/platform/android/os_android.h
@@ -37,7 +37,6 @@
 #include "core/os/main_loop.h"
 #include "drivers/unix/os_unix.h"
 #include "main/input_default.h"
-//#include "power_android.h"
 #include "servers/audio_server.h"
 #include "servers/visual/rasterizer.h"
 
@@ -93,8 +92,6 @@ private:
 	GodotJavaWrapper *godot_java;
 	GodotIOJavaWrapper *godot_io_java;
 
-	//PowerAndroid *power_manager_func;
-
 	int video_driver_index;
 
 public:
diff --git a/platform/android/power_android.cpp b/platform/android/power_android.cpp
deleted file mode 100644
index b0a90312e5..0000000000
--- a/platform/android/power_android.cpp
+++ /dev/null
@@ -1,255 +0,0 @@
-/*************************************************************************/
-/*  power_android.cpp                                                    */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-/*
-Adapted from corresponding SDL 2.0 code.
-*/
-
-/*
-  Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
-
-  This software is provided 'as-is', without any express or implied
-  warranty.  In no event will the authors be held liable for any damages
-  arising from the use of this software.
-
-  Permission is granted to anyone to use this software for any purpose,
-  including commercial applications, and to alter it and redistribute it
-  freely, subject to the following restrictions:
-
-  1. The origin of this software must not be misrepresented; you must not
-     claim that you wrote the original software. If you use this software
-     in a product, an acknowledgment in the product documentation would be
-     appreciated but is not required.
-  2. Altered source versions must be plainly marked as such, and must not be
-     misrepresented as being the original software.
-  3. This notice may not be removed or altered from any source distribution.
-*/
-
-#include "power_android.h"
-
-#include "core/error_macros.h"
-
-static void LocalReferenceHolder_Cleanup(struct LocalReferenceHolder *refholder) {
-	if (refholder->m_env) {
-		JNIEnv *env = refholder->m_env;
-		(*env)->PopLocalFrame(env, NULL);
-		--s_active;
-	}
-}
-
-static struct LocalReferenceHolder LocalReferenceHolder_Setup(const char *func) {
-	struct LocalReferenceHolder refholder;
-	refholder.m_env = NULL;
-	refholder.m_func = func;
-	return refholder;
-}
-
-static bool LocalReferenceHolder_Init(struct LocalReferenceHolder *refholder, JNIEnv *env) {
-	const int capacity = 16;
-	if ((*env)->PushLocalFrame(env, capacity) < 0) {
-		return false;
-	}
-	++s_active;
-	refholder->m_env = env;
-	return true;
-}
-
-static SDL_bool LocalReferenceHolder_IsActive(void) {
-	return s_active > 0;
-}
-
-ANativeWindow *Android_JNI_GetNativeWindow(void) {
-	ANativeWindow *anw;
-	jobject s;
-	JNIEnv *env = Android_JNI_GetEnv();
-
-	s = (*env)->CallStaticObjectMethod(env, mActivityClass, midGetNativeSurface);
-	anw = ANativeWindow_fromSurface(env, s);
-	(*env)->DeleteLocalRef(env, s);
-
-	return anw;
-}
-
-/*
- *  CODE CHUNK IMPORTED FROM SDL 2.0
- * returns 0 on success or -1 on error (others undefined then)
- * returns truthy or falsy value in plugged, charged and battery
- * returns the value in seconds and percent or -1 if not available
- */
-int Android_JNI_GetPowerInfo(int *plugged, int *charged, int *battery, int *seconds, int *percent) {
-	env = Android_JNI_GetEnv();
-	refs = LocalReferenceHolder_Setup(__FUNCTION__);
-
-	if (!LocalReferenceHolder_Init(&refs, env)) {
-		LocalReferenceHolder_Cleanup(&refs);
-		return -1;
-	}
-	mid = (*env)->GetStaticMethodID(env, mActivityClass, "getContext", "()Landroid/content/Context;");
-	context = (*env)->CallStaticObjectMethod(env, mActivityClass, mid);
-	action = (*env)->NewStringUTF(env, "android.intent.action.BATTERY_CHANGED");
-	cls = (*env)->FindClass(env, "android/content/IntentFilter");
-	mid = (*env)->GetMethodID(env, cls, "<init>", "(Ljava/lang/String;)V");
-	filter = (*env)->NewObject(env, cls, mid, action);
-	(*env)->DeleteLocalRef(env, action);
-	mid = (*env)->GetMethodID(env, mActivityClass, "registerReceiver", "(Landroid/content/BroadcastReceiver;Landroid/content/IntentFilter;)Landroid/content/Intent;");
-	intent = (*env)->CallObjectMethod(env, context, mid, NULL, filter);
-	(*env)->DeleteLocalRef(env, filter);
-	cls = (*env)->GetObjectClass(env, intent);
-	imid = (*env)->GetMethodID(env, cls, "getIntExtra", "(Ljava/lang/String;I)I");
-// Watch out for C89 scoping rules because of the macro
-#define GET_INT_EXTRA(var, key)                                \
-	int var;                                                   \
-	iname = (*env)->NewStringUTF(env, key);                    \
-	var = (*env)->CallIntMethod(env, intent, imid, iname, -1); \
-	(*env)->DeleteLocalRef(env, iname);
-	bmid = (*env)->GetMethodID(env, cls, "getBooleanExtra", "(Ljava/lang/String;Z)Z");
-// Watch out for C89 scoping rules because of the macro
-#define GET_BOOL_EXTRA(var, key)                                          \
-	int var;                                                              \
-	bname = (*env)->NewStringUTF(env, key);                               \
-	var = (*env)->CallBooleanMethod(env, intent, bmid, bname, JNI_FALSE); \
-	(*env)->DeleteLocalRef(env, bname);
-	if (plugged) {
-		// Watch out for C89 scoping rules because of the macro
-		GET_INT_EXTRA(plug, "plugged") // == BatteryManager.EXTRA_PLUGGED (API 5)
-		if (plug == -1) {
-			LocalReferenceHolder_Cleanup(&refs);
-			return -1;
-		}
-		// 1 == BatteryManager.BATTERY_PLUGGED_AC
-		// 2 == BatteryManager.BATTERY_PLUGGED_USB
-		*plugged = (0 < plug) ? 1 : 0;
-	}
-	if (charged) {
-		// Watch out for C89 scoping rules because of the macro
-		GET_INT_EXTRA(status, "status") // == BatteryManager.EXTRA_STATUS (API 5)
-		if (status == -1) {
-			LocalReferenceHolder_Cleanup(&refs);
-			return -1;
-		}
-		// 5 == BatteryManager.BATTERY_STATUS_FULL
-		*charged = (status == 5) ? 1 : 0;
-	}
-	if (battery) {
-		GET_BOOL_EXTRA(present, "present") // == BatteryManager.EXTRA_PRESENT (API 5)
-		*battery = present ? 1 : 0;
-	}
-	if (seconds) {
-		*seconds = -1; // not possible
-	}
-	if (percent) {
-		int level;
-		int scale;
-		// Watch out for C89 scoping rules because of the macro
-		{
-			GET_INT_EXTRA(level_temp, "level") // == BatteryManager.EXTRA_LEVEL (API 5)
-			level = level_temp;
-		}
-		// Watch out for C89 scoping rules because of the macro
-		{
-			GET_INT_EXTRA(scale_temp, "scale") // == BatteryManager.EXTRA_SCALE (API 5)
-			scale = scale_temp;
-		}
-		if ((level == -1) || (scale == -1)) {
-			LocalReferenceHolder_Cleanup(&refs);
-			return -1;
-		}
-		*percent = level * 100 / scale;
-	}
-	(*env)->DeleteLocalRef(env, intent);
-	LocalReferenceHolder_Cleanup(&refs);
-
-	return 0;
-}
-
-bool PowerAndroid::GetPowerInfo_Android() {
-	int battery;
-	int plugged;
-	int charged;
-
-	if (Android_JNI_GetPowerInfo(&plugged, &charged, &battery, &this->nsecs_left, &this->percent_left) != -1) {
-		if (plugged) {
-			if (charged) {
-				this->power_state = OS::POWERSTATE_CHARGED;
-			} else if (battery) {
-				this->power_state = OS::POWERSTATE_CHARGING;
-			} else {
-				this->power_state = OS::POWERSTATE_NO_BATTERY;
-				this->nsecs_left = -1;
-				this->percent_left = -1;
-			}
-		} else {
-			this->power_state = OS::POWERSTATE_ON_BATTERY;
-		}
-	} else {
-		this->power_state = OS::POWERSTATE_UNKNOWN;
-		this->nsecs_left = -1;
-		this->percent_left = -1;
-	}
-
-	return true;
-}
-
-OS::PowerState PowerAndroid::get_power_state() {
-	if (GetPowerInfo_Android()) {
-		return power_state;
-	} else {
-		WARN_PRINT("Power management is not implemented on this platform, defaulting to POWERSTATE_UNKNOWN");
-		return OS::POWERSTATE_UNKNOWN;
-	}
-}
-
-int PowerAndroid::get_power_seconds_left() {
-	if (GetPowerInfo_Android()) {
-		return nsecs_left;
-	} else {
-		WARN_PRINT("Power management is not implemented on this platform, defaulting to -1");
-		return -1;
-	}
-}
-
-int PowerAndroid::get_power_percent_left() {
-	if (GetPowerInfo_Android()) {
-		return percent_left;
-	} else {
-		WARN_PRINT("Power management is not implemented on this platform, defaulting to -1");
-		return -1;
-	}
-}
-
-PowerAndroid::PowerAndroid() :
-		nsecs_left(-1),
-		percent_left(-1),
-		power_state(OS::POWERSTATE_UNKNOWN) {
-}
-
-PowerAndroid::~PowerAndroid() {
-}
diff --git a/platform/android/power_android.h b/platform/android/power_android.h
deleted file mode 100644
index 9f77f3fc6b..0000000000
--- a/platform/android/power_android.h
+++ /dev/null
@@ -1,80 +0,0 @@
-/*************************************************************************/
-/*  power_android.h                                                      */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#ifndef POWER_ANDROID_H
-#define POWER_ANDROID_H
-
-#include "core/os/os.h"
-
-#include <android/native_window_jni.h>
-
-class PowerAndroid {
-
-	struct LocalReferenceHolder {
-		JNIEnv *m_env;
-		const char *m_func;
-	};
-
-private:
-	static struct LocalReferenceHolder refs;
-	static JNIEnv *env;
-	static jmethodID mid;
-	static jobject context;
-	static jstring action;
-	static jclass cls;
-	static jobject filter;
-	static jobject intent;
-	static jstring iname;
-	static jmethodID imid;
-	static jstring bname;
-	static jmethodID bmid;
-
-	int nsecs_left;
-	int percent_left;
-	OS::PowerState power_state;
-
-	bool GetPowerInfo_Android();
-	bool UpdatePowerInfo();
-
-public:
-	static int s_active;
-
-	PowerAndroid();
-	virtual ~PowerAndroid();
-	static bool LocalReferenceHolder_Init(struct LocalReferenceHolder *refholder, JNIEnv *env);
-	static struct LocalReferenceHolder LocalReferenceHolder_Setup(const char *func);
-	static void LocalReferenceHolder_Cleanup(struct LocalReferenceHolder *refholder);
-
-	OS::PowerState get_power_state();
-	int get_power_seconds_left();
-	int get_power_percent_left();
-};
-
-#endif // POWER_ANDROID_H
diff --git a/platform/haiku/os_haiku.cpp b/platform/haiku/os_haiku.cpp
index 2e4bb2ff26..a082ba53f9 100644
--- a/platform/haiku/os_haiku.cpp
+++ b/platform/haiku/os_haiku.cpp
@@ -360,18 +360,3 @@ String OS_Haiku::get_cache_path() const {
 		return get_config_path();
 	}
 }
-
-OS::PowerState OS_Haiku::get_power_state() {
-	WARN_PRINT("Power management is not implemented on this platform, defaulting to POWERSTATE_UNKNOWN");
-	return OS::POWERSTATE_UNKNOWN;
-}
-
-int OS_Haiku::get_power_seconds_left() {
-	WARN_PRINT("Power management is not implemented on this platform, defaulting to -1");
-	return -1;
-}
-
-int OS_Haiku::get_power_percent_left() {
-	WARN_PRINT("Power management is not implemented on this platform, defaulting to -1");
-	return -1;
-}
diff --git a/platform/haiku/os_haiku.h b/platform/haiku/os_haiku.h
index c99147198d..fc8cb77a91 100644
--- a/platform/haiku/os_haiku.h
+++ b/platform/haiku/os_haiku.h
@@ -113,10 +113,6 @@ public:
 	virtual void get_fullscreen_mode_list(List<VideoMode> *p_list, int p_screen = 0) const;
 	virtual String get_executable_path() const;
 
-	virtual OS::PowerState get_power_state();
-	virtual int get_power_seconds_left();
-	virtual int get_power_percent_left();
-
 	virtual bool _check_internal_feature_support(const String &p_feature);
 
 	virtual String get_config_path() const;
diff --git a/platform/iphone/power_iphone.cpp b/platform/iphone/power_iphone.cpp
deleted file mode 100644
index 36bac8da38..0000000000
--- a/platform/iphone/power_iphone.cpp
+++ /dev/null
@@ -1,70 +0,0 @@
-/*************************************************************************/
-/*  power_iphone.cpp                                                     */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#include "power_iphone.h"
-
-bool PowerIphone::UpdatePowerInfo() {
-	return false;
-}
-
-OS::PowerState PowerIphone::get_power_state() {
-	if (UpdatePowerInfo()) {
-		return power_state;
-	} else {
-		return OS::POWERSTATE_UNKNOWN;
-	}
-}
-
-int PowerIphone::get_power_seconds_left() {
-	if (UpdatePowerInfo()) {
-		return nsecs_left;
-	} else {
-		return -1;
-	}
-}
-
-int PowerIphone::get_power_percent_left() {
-	if (UpdatePowerInfo()) {
-		return percent_left;
-	} else {
-		return -1;
-	}
-}
-
-PowerIphone::PowerIphone() :
-		nsecs_left(-1),
-		percent_left(-1),
-		power_state(OS::POWERSTATE_UNKNOWN) {
-	// TODO Auto-generated constructor stub
-}
-
-PowerIphone::~PowerIphone() {
-	// TODO Auto-generated destructor stub
-}
diff --git a/platform/iphone/power_iphone.h b/platform/iphone/power_iphone.h
deleted file mode 100644
index 47a4508509..0000000000
--- a/platform/iphone/power_iphone.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*************************************************************************/
-/*  power_iphone.h                                                       */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#ifndef POWER_IPHONE_H
-#define POWER_IPHONE_H
-
-#include <os/os.h>
-
-class PowerIphone {
-private:
-	int nsecs_left;
-	int percent_left;
-	OS::PowerState power_state;
-
-	bool UpdatePowerInfo();
-
-public:
-	PowerIphone();
-	virtual ~PowerIphone();
-
-	OS::PowerState get_power_state();
-	int get_power_seconds_left();
-	int get_power_percent_left();
-};
-
-#endif // POWER_IPHONE_H
diff --git a/platform/javascript/os_javascript.cpp b/platform/javascript/os_javascript.cpp
index d22e53e7ea..8ba2b39c85 100644
--- a/platform/javascript/os_javascript.cpp
+++ b/platform/javascript/os_javascript.cpp
@@ -1244,24 +1244,6 @@ String OS_JavaScript::get_resource_dir() const {
 	return "/";
 }
 
-OS::PowerState OS_JavaScript::get_power_state() {
-
-	WARN_PRINT("Power management is not supported for the HTML5 platform, defaulting to POWERSTATE_UNKNOWN");
-	return OS::POWERSTATE_UNKNOWN;
-}
-
-int OS_JavaScript::get_power_seconds_left() {
-
-	WARN_PRINT("Power management is not supported for the HTML5 platform, defaulting to -1");
-	return -1;
-}
-
-int OS_JavaScript::get_power_percent_left() {
-
-	WARN_PRINT("Power management is not supported for the HTML5 platform, defaulting to -1");
-	return -1;
-}
-
 void OS_JavaScript::file_access_close_callback(const String &p_file, int p_flags) {
 
 	OS_JavaScript *os = get_singleton();
diff --git a/platform/javascript/os_javascript.h b/platform/javascript/os_javascript.h
index 65a18830ed..5319ea121c 100644
--- a/platform/javascript/os_javascript.h
+++ b/platform/javascript/os_javascript.h
@@ -160,10 +160,6 @@ public:
 	virtual String get_resource_dir() const;
 	virtual String get_user_data_dir() const;
 
-	virtual OS::PowerState get_power_state();
-	virtual int get_power_seconds_left();
-	virtual int get_power_percent_left();
-
 	void set_idb_available(bool p_idb_available);
 	virtual bool is_userfs_persistent() const;
 
diff --git a/platform/osx/SCsub b/platform/osx/SCsub
index 09f213cb0e..d764ac4b50 100644
--- a/platform/osx/SCsub
+++ b/platform/osx/SCsub
@@ -12,7 +12,6 @@ files = [
     'semaphore_osx.cpp',
     'dir_access_osx.mm',
     'joypad_osx.cpp',
-    'power_osx.cpp',
     'vulkan_context_osx.mm',
     'context_gl_osx.mm'
 ]
diff --git a/platform/osx/os_osx.h b/platform/osx/os_osx.h
index bfd13be43a..75a56bd82c 100644
--- a/platform/osx/os_osx.h
+++ b/platform/osx/os_osx.h
@@ -40,7 +40,6 @@
 #include "drivers/unix/os_unix.h"
 #include "joypad_osx.h"
 #include "main/input_default.h"
-#include "power_osx.h"
 #include "servers/audio_server.h"
 #include "servers/visual/rasterizer.h"
 #include "servers/visual/visual_server_wrap_mt.h"
@@ -147,8 +146,6 @@ public:
 	Size2 min_size;
 	Size2 max_size;
 
-	PowerOSX *power_manager;
-
 	CrashHandler crash_handler;
 
 	float _mouse_scale(float p_scale) {
@@ -304,10 +301,6 @@ public:
 
 	virtual String get_unique_id() const;
 
-	virtual OS::PowerState get_power_state();
-	virtual int get_power_seconds_left();
-	virtual int get_power_percent_left();
-
 	virtual bool _check_internal_feature_support(const String &p_feature);
 
 	virtual void _set_use_vsync(bool p_enable);
diff --git a/platform/osx/os_osx.mm b/platform/osx/os_osx.mm
index 87ab8b3420..ca29c95f57 100644
--- a/platform/osx/os_osx.mm
+++ b/platform/osx/os_osx.mm
@@ -1628,8 +1628,6 @@ Error OS_OSX::initialize(const VideoMode &p_desired, int p_video_driver, int p_a
 	input = memnew(InputDefault);
 	joypad_osx = memnew(JoypadOSX);
 
-	power_manager = memnew(PowerOSX);
-
 	_ensure_user_data_dir();
 
 	restore_rect = Rect2(get_window_position(), get_window_size());
@@ -2973,18 +2971,6 @@ String OS_OSX::get_joy_guid(int p_device) const {
 	return input->get_joy_guid_remapped(p_device);
 }
 
-OS::PowerState OS_OSX::get_power_state() {
-	return power_manager->get_power_state();
-}
-
-int OS_OSX::get_power_seconds_left() {
-	return power_manager->get_power_seconds_left();
-}
-
-int OS_OSX::get_power_percent_left() {
-	return power_manager->get_power_percent_left();
-}
-
 Error OS_OSX::move_to_trash(const String &p_path) {
 	NSFileManager *fm = [NSFileManager defaultManager];
 	NSURL *url = [NSURL fileURLWithPath:@(p_path.utf8().get_data())];
diff --git a/platform/osx/power_osx.cpp b/platform/osx/power_osx.cpp
deleted file mode 100644
index 6d7667c5e8..0000000000
--- a/platform/osx/power_osx.cpp
+++ /dev/null
@@ -1,252 +0,0 @@
-/*************************************************************************/
-/*  power_osx.cpp                                                        */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-/*
-Adapted from corresponding SDL 2.0 code.
-*/
-
-/*
-  Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
-
-  This software is provided 'as-is', without any express or implied
-  warranty.  In no event will the authors be held liable for any damages
-  arising from the use of this software.
-
-  Permission is granted to anyone to use this software for any purpose,
-  including commercial applications, and to alter it and redistribute it
-  freely, subject to the following restrictions:
-
-  1. The origin of this software must not be misrepresented; you must not
-     claim that you wrote the original software. If you use this software
-     in a product, an acknowledgment in the product documentation would be
-     appreciated but is not required.
-  2. Altered source versions must be plainly marked as such, and must not be
-     misrepresented as being the original software.
-  3. This notice may not be removed or altered from any source distribution.
-*/
-
-#include "power_osx.h"
-
-#include <CoreFoundation/CoreFoundation.h>
-#include <IOKit/ps/IOPSKeys.h>
-#include <IOKit/ps/IOPowerSources.h>
-
-//  CODE CHUNK IMPORTED FROM SDL 2.0
-
-/* CoreFoundation is so verbose... */
-#define STRMATCH(a, b) (CFStringCompare(a, b, 0) == kCFCompareEqualTo)
-#define GETVAL(k, v) \
-	CFDictionaryGetValueIfPresent(dict, CFSTR(k), (const void **)v)
-
-/* Note that AC power sources also include a laptop battery it is charging. */
-void PowerOSX::checkps(CFDictionaryRef dict, bool *have_ac, bool *have_battery, bool *charging) {
-	CFStringRef strval; /* don't CFRelease() this. */
-	CFBooleanRef bval;
-	CFNumberRef numval;
-	bool charge = false;
-	bool choose = false;
-	bool is_ac = false;
-	int secs = -1;
-	int maxpct = -1;
-	int pct = -1;
-
-	if ((GETVAL(kIOPSIsPresentKey, &bval)) && (bval == kCFBooleanFalse)) {
-		return; /* nothing to see here. */
-	}
-
-	if (!GETVAL(kIOPSPowerSourceStateKey, &strval)) {
-		return;
-	}
-
-	if (STRMATCH(strval, CFSTR(kIOPSACPowerValue))) {
-		is_ac = *have_ac = true;
-	} else if (!STRMATCH(strval, CFSTR(kIOPSBatteryPowerValue))) {
-		return; /* not a battery? */
-	}
-
-	if ((GETVAL(kIOPSIsChargingKey, &bval)) && (bval == kCFBooleanTrue)) {
-		charge = true;
-	}
-
-	if (GETVAL(kIOPSMaxCapacityKey, &numval)) {
-		SInt32 val = -1;
-		CFNumberGetValue(numval, kCFNumberSInt32Type, &val);
-		if (val > 0) {
-			*have_battery = true;
-			maxpct = (int)val;
-		}
-	}
-
-	if (GETVAL(kIOPSMaxCapacityKey, &numval)) {
-		SInt32 val = -1;
-		CFNumberGetValue(numval, kCFNumberSInt32Type, &val);
-		if (val > 0) {
-			*have_battery = true;
-			maxpct = (int)val;
-		}
-	}
-
-	if (GETVAL(kIOPSTimeToEmptyKey, &numval)) {
-		SInt32 val = -1;
-		CFNumberGetValue(numval, kCFNumberSInt32Type, &val);
-
-		/* Mac OS X reports 0 minutes until empty if you're plugged in. :( */
-		if ((val == 0) && (is_ac)) {
-			val = -1; /* !!! FIXME: calc from timeToFull and capacity? */
-		}
-
-		secs = (int)val;
-		if (secs > 0) {
-			secs *= 60; /* value is in minutes, so convert to seconds. */
-		}
-	}
-
-	if (GETVAL(kIOPSCurrentCapacityKey, &numval)) {
-		SInt32 val = -1;
-		CFNumberGetValue(numval, kCFNumberSInt32Type, &val);
-		pct = (int)val;
-	}
-
-	if ((pct > 0) && (maxpct > 0)) {
-		pct = (int)((((double)pct) / ((double)maxpct)) * 100.0);
-	}
-
-	if (pct > 100) {
-		pct = 100;
-	}
-
-	/*
-	 * We pick the battery that claims to have the most minutes left.
-	 *  (failing a report of minutes, we'll take the highest percent.)
-	 */
-	if ((secs < 0) && (nsecs_left < 0)) {
-		if ((pct < 0) && (percent_left < 0)) {
-			choose = true; /* at least we know there's a battery. */
-		}
-		if (pct > percent_left) {
-			choose = true;
-		}
-	} else if (secs > nsecs_left) {
-		choose = true;
-	}
-
-	if (choose) {
-		nsecs_left = secs;
-		percent_left = pct;
-		*charging = charge;
-	}
-}
-
-#undef GETVAL
-#undef STRMATCH
-
-//  CODE CHUNK IMPORTED FROM SDL 2.0
-bool PowerOSX::GetPowerInfo_MacOSX() {
-	CFTypeRef blob = IOPSCopyPowerSourcesInfo();
-
-	nsecs_left = -1;
-	percent_left = -1;
-	power_state = OS::POWERSTATE_UNKNOWN;
-
-	if (blob != NULL) {
-		CFArrayRef list = IOPSCopyPowerSourcesList(blob);
-		if (list != NULL) {
-			/* don't CFRelease() the list items, or dictionaries! */
-			bool have_ac = false;
-			bool have_battery = false;
-			bool charging = false;
-			const CFIndex total = CFArrayGetCount(list);
-			CFIndex i;
-			for (i = 0; i < total; i++) {
-				CFTypeRef ps = (CFTypeRef)CFArrayGetValueAtIndex(list, i);
-				CFDictionaryRef dict = IOPSGetPowerSourceDescription(blob, ps);
-				if (dict != NULL) {
-					checkps(dict, &have_ac, &have_battery, &charging);
-				}
-			}
-
-			if (!have_battery) {
-				power_state = OS::POWERSTATE_NO_BATTERY;
-			} else if (charging) {
-				power_state = OS::POWERSTATE_CHARGING;
-			} else if (have_ac) {
-				power_state = OS::POWERSTATE_CHARGED;
-			} else {
-				power_state = OS::POWERSTATE_ON_BATTERY;
-			}
-
-			CFRelease(list);
-		}
-		CFRelease(blob);
-	}
-
-	return true; /* always the definitive answer on Mac OS X. */
-}
-
-bool PowerOSX::UpdatePowerInfo() {
-	if (GetPowerInfo_MacOSX()) {
-		return true;
-	}
-	return false;
-}
-
-OS::PowerState PowerOSX::get_power_state() {
-	if (UpdatePowerInfo()) {
-		return power_state;
-	} else {
-		return OS::POWERSTATE_UNKNOWN;
-	}
-}
-
-int PowerOSX::get_power_seconds_left() {
-	if (UpdatePowerInfo()) {
-		return nsecs_left;
-	} else {
-		return -1;
-	}
-}
-
-int PowerOSX::get_power_percent_left() {
-	if (UpdatePowerInfo()) {
-		return percent_left;
-	} else {
-		return -1;
-	}
-}
-
-PowerOSX::PowerOSX() :
-		nsecs_left(-1),
-		percent_left(-1),
-		power_state(OS::POWERSTATE_UNKNOWN) {
-}
-
-PowerOSX::~PowerOSX() {
-}
diff --git a/platform/osx/power_osx.h b/platform/osx/power_osx.h
deleted file mode 100644
index 6f9b213439..0000000000
--- a/platform/osx/power_osx.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*************************************************************************/
-/*  power_osx.h                                                          */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#ifndef POWER_OSX_H
-#define POWER_OSX_H
-
-#include "core/os/file_access.h"
-#include "core/os/os.h"
-#include "dir_access_osx.h"
-
-#include <CoreFoundation/CoreFoundation.h>
-
-class PowerOSX {
-
-private:
-	int nsecs_left;
-	int percent_left;
-	OS::PowerState power_state;
-	void checkps(CFDictionaryRef dict, bool *have_ac, bool *have_battery, bool *charging);
-	bool GetPowerInfo_MacOSX(/*PowerState * state, int *seconds, int *percent*/);
-	bool UpdatePowerInfo();
-
-public:
-	PowerOSX();
-	virtual ~PowerOSX();
-
-	OS::PowerState get_power_state();
-	int get_power_seconds_left();
-	int get_power_percent_left();
-};
-
-#endif // POWER_OSX_H
diff --git a/platform/server/SCsub b/platform/server/SCsub
index f977275595..e8538f03a6 100644
--- a/platform/server/SCsub
+++ b/platform/server/SCsub
@@ -10,10 +10,8 @@ common_server = [\
 
 if sys.platform == "darwin":
 	common_server.append("#platform/osx/crash_handler_osx.mm")
-	common_server.append("#platform/osx/power_osx.cpp")
 	common_server.append("#platform/osx/semaphore_osx.cpp")
 else:
 	common_server.append("#platform/x11/crash_handler_x11.cpp")
-	common_server.append("#platform/x11/power_x11.cpp")
 
 prog = env.add_program('#bin/godot_server', ['godot_server.cpp'] + common_server)
diff --git a/platform/server/os_server.cpp b/platform/server/os_server.cpp
index 498fd01b5e..c0a4813596 100644
--- a/platform/server/os_server.cpp
+++ b/platform/server/os_server.cpp
@@ -92,12 +92,6 @@ Error OS_Server::initialize(const VideoMode &p_desired, int p_video_driver, int
 
 	input = memnew(InputDefault);
 
-#ifdef __APPLE__
-	power_manager = memnew(PowerOSX);
-#else
-	power_manager = memnew(PowerX11);
-#endif
-
 	_ensure_user_data_dir();
 
 	resource_loader_dummy.instance();
@@ -117,8 +111,6 @@ void OS_Server::finalize() {
 
 	memdelete(input);
 
-	memdelete(power_manager);
-
 	ResourceLoader::remove_resource_format_loader(resource_loader_dummy);
 	resource_loader_dummy.unref();
 
@@ -198,18 +190,6 @@ String OS_Server::get_name() const {
 void OS_Server::move_window_to_foreground() {
 }
 
-OS::PowerState OS_Server::get_power_state() {
-	return power_manager->get_power_state();
-}
-
-int OS_Server::get_power_seconds_left() {
-	return power_manager->get_power_seconds_left();
-}
-
-int OS_Server::get_power_percent_left() {
-	return power_manager->get_power_percent_left();
-}
-
 bool OS_Server::_check_internal_feature_support(const String &p_feature) {
 	return p_feature == "pc";
 }
diff --git a/platform/server/os_server.h b/platform/server/os_server.h
index 46ca9cb6d1..7584293722 100644
--- a/platform/server/os_server.h
+++ b/platform/server/os_server.h
@@ -36,11 +36,9 @@
 #include "main/input_default.h"
 #ifdef __APPLE__
 #include "platform/osx/crash_handler_osx.h"
-#include "platform/osx/power_osx.h"
 #include "platform/osx/semaphore_osx.h"
 #else
 #include "platform/x11/crash_handler_x11.h"
-#include "platform/x11/power_x11.h"
 #endif
 #include "servers/audio_server.h"
 #include "servers/visual/rasterizer.h"
@@ -63,12 +61,6 @@ class OS_Server : public OS_Unix {
 
 	InputDefault *input;
 
-#ifdef __APPLE__
-	PowerOSX *power_manager;
-#else
-	PowerX11 *power_manager;
-#endif
-
 	CrashHandler crash_handler;
 
 	int video_driver_index;
@@ -112,9 +104,6 @@ public:
 
 	void run();
 
-	virtual OS::PowerState get_power_state();
-	virtual int get_power_seconds_left();
-	virtual int get_power_percent_left();
 	virtual bool _check_internal_feature_support(const String &p_feature);
 
 	virtual String get_config_path() const;
diff --git a/platform/uwp/SCsub b/platform/uwp/SCsub
index c14290f0c4..620d8c3c3a 100644
--- a/platform/uwp/SCsub
+++ b/platform/uwp/SCsub
@@ -7,7 +7,6 @@ files = [
     '#platform/windows/key_mapping_windows.cpp',
     '#platform/windows/windows_terminal_logger.cpp',
     'joypad_uwp.cpp',
-    'power_uwp.cpp',
     'context_egl_uwp.cpp',
     'app.cpp',
     'os_uwp.cpp',
diff --git a/platform/uwp/os_uwp.cpp b/platform/uwp/os_uwp.cpp
index 9748c1ef9f..3cd7a02a94 100644
--- a/platform/uwp/os_uwp.cpp
+++ b/platform/uwp/os_uwp.cpp
@@ -271,8 +271,6 @@ Error OS_UWP::initialize(const VideoMode &p_desired, int p_video_driver, int p_a
 
 	AudioDriverManager::initialize(p_audio_driver);
 
-	power_manager = memnew(PowerUWP);
-
 	managed_object->update_clipboard();
 
 	Clipboard::ContentChanged += ref new EventHandler<Platform::Object ^>(managed_object, &ManagedType::on_clipboard_changed);
@@ -854,18 +852,6 @@ bool OS_UWP::_check_internal_feature_support(const String &p_feature) {
 	return p_feature == "pc";
 }
 
-OS::PowerState OS_UWP::get_power_state() {
-	return power_manager->get_power_state();
-}
-
-int OS_UWP::get_power_seconds_left() {
-	return power_manager->get_power_seconds_left();
-}
-
-int OS_UWP::get_power_percent_left() {
-	return power_manager->get_power_percent_left();
-}
-
 OS_UWP::OS_UWP() {
 
 	key_event_pos = 0;
diff --git a/platform/uwp/os_uwp.h b/platform/uwp/os_uwp.h
index fb43ab382e..32b899c0da 100644
--- a/platform/uwp/os_uwp.h
+++ b/platform/uwp/os_uwp.h
@@ -39,7 +39,6 @@
 #include "drivers/xaudio2/audio_driver_xaudio2.h"
 #include "joypad_uwp.h"
 #include "main/input_default.h"
-#include "power_uwp.h"
 #include "servers/audio_server.h"
 #include "servers/visual/rasterizer.h"
 #include "servers/visual_server.h"
@@ -102,8 +101,6 @@ private:
 
 	AudioDriverXAudio2 audio_driver;
 
-	PowerUWP *power_manager;
-
 	MouseMode mouse_mode;
 	bool alt_mem;
 	bool gr_mem;
@@ -254,10 +251,6 @@ public:
 
 	void input_event(const Ref<InputEvent> &p_event);
 
-	virtual OS::PowerState get_power_state();
-	virtual int get_power_seconds_left();
-	virtual int get_power_percent_left();
-
 	void queue_key_event(KeyEvent &p_event);
 
 	OS_UWP();
diff --git a/platform/uwp/power_uwp.cpp b/platform/uwp/power_uwp.cpp
deleted file mode 100644
index c6b4359392..0000000000
--- a/platform/uwp/power_uwp.cpp
+++ /dev/null
@@ -1,77 +0,0 @@
-/*************************************************************************/
-/*  power_uwp.cpp                                                        */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#include "power_uwp.h"
-
-PowerUWP::PowerUWP() :
-		nsecs_left(-1),
-		percent_left(-1),
-		power_state(OS::POWERSTATE_UNKNOWN) {
-}
-
-PowerUWP::~PowerUWP() {
-}
-
-bool PowerUWP::UpdatePowerInfo() {
-	// TODO, WinRT: Battery info is available on at least one WinRT platform (Windows Phone 8).  Implement UpdatePowerInfo as appropriate. */
-	/* Notes from SDL:
-	         - the Win32 function, GetSystemPowerStatus, is not available for use on WinRT
-	         - Windows Phone 8 has a 'Battery' class, which is documented as available for C++
-	             - More info on WP8's Battery class can be found at http://msdn.microsoft.com/library/windowsphone/develop/jj207231
-	    */
-	return false;
-}
-
-OS::PowerState PowerUWP::get_power_state() {
-	if (UpdatePowerInfo()) {
-		return power_state;
-	} else {
-		WARN_PRINT("Power management is not implemented on this platform, defaulting to POWERSTATE_UNKNOWN");
-		return OS::POWERSTATE_UNKNOWN;
-	}
-}
-
-int PowerUWP::get_power_seconds_left() {
-	if (UpdatePowerInfo()) {
-		return nsecs_left;
-	} else {
-		WARN_PRINT("Power management is not implemented on this platform, defaulting to -1");
-		return -1;
-	}
-}
-
-int PowerUWP::get_power_percent_left() {
-	if (UpdatePowerInfo()) {
-		return percent_left;
-	} else {
-		WARN_PRINT("Power management is not implemented on this platform, defaulting to -1");
-		return -1;
-	}
-}
diff --git a/platform/uwp/power_uwp.h b/platform/uwp/power_uwp.h
deleted file mode 100644
index 5e28cf65e5..0000000000
--- a/platform/uwp/power_uwp.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*************************************************************************/
-/*  power_uwp.h                                                          */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#ifndef POWER_UWP_H
-#define POWER_UWP_H
-
-#include "core/os/dir_access.h"
-#include "core/os/file_access.h"
-#include "core/os/os.h"
-
-class PowerUWP {
-
-private:
-	int nsecs_left;
-	int percent_left;
-	OS::PowerState power_state;
-
-	bool UpdatePowerInfo();
-
-public:
-	PowerUWP();
-	virtual ~PowerUWP();
-
-	OS::PowerState get_power_state();
-	int get_power_seconds_left();
-	int get_power_percent_left();
-};
-
-#endif // POWER_UWP_H
diff --git a/platform/windows/SCsub b/platform/windows/SCsub
index 6f01460025..8e94c7b35d 100644
--- a/platform/windows/SCsub
+++ b/platform/windows/SCsub
@@ -12,7 +12,6 @@ common_win = [
     "os_windows.cpp",
     "key_mapping_windows.cpp",
     "joypad_windows.cpp",
-    "power_windows.cpp",
     "windows_terminal_logger.cpp",
     "vulkan_context_win.cpp",
     "context_gl_windows.cpp"
diff --git a/platform/windows/os_windows.cpp b/platform/windows/os_windows.cpp
index 133dc9004d..cdcdf65e21 100755
--- a/platform/windows/os_windows.cpp
+++ b/platform/windows/os_windows.cpp
@@ -1492,8 +1492,6 @@ Error OS_Windows::initialize(const VideoMode &p_desired, int p_video_driver, int
 	input = memnew(InputDefault);
 	joypad = memnew(JoypadWindows(input, &hWnd));
 
-	power_manager = memnew(PowerWindows);
-
 	AudioDriverManager::initialize(p_audio_driver);
 
 	TRACKMOUSEEVENT tme;
@@ -3334,18 +3332,6 @@ void OS_Windows::_set_use_vsync(bool p_enable) {
 #endif
 }
 
-OS::PowerState OS_Windows::get_power_state() {
-	return power_manager->get_power_state();
-}
-
-int OS_Windows::get_power_seconds_left() {
-	return power_manager->get_power_seconds_left();
-}
-
-int OS_Windows::get_power_percent_left() {
-	return power_manager->get_power_percent_left();
-}
-
 bool OS_Windows::_check_internal_feature_support(const String &p_feature) {
 
 	return p_feature == "pc";
diff --git a/platform/windows/os_windows.h b/platform/windows/os_windows.h
index 89b67f8d91..6c3769c98c 100644
--- a/platform/windows/os_windows.h
+++ b/platform/windows/os_windows.h
@@ -40,7 +40,6 @@
 #include "drivers/winmidi/midi_driver_winmidi.h"
 #include "key_mapping_windows.h"
 #include "main/input_default.h"
-#include "power_windows.h"
 #include "servers/audio_server.h"
 #include "servers/visual/rasterizer.h"
 #include "servers/visual_server.h"
@@ -239,8 +238,6 @@ class OS_Windows : public OS {
 	JoypadWindows *joypad;
 	Map<int, Vector2> touch_state;
 
-	PowerWindows *power_manager;
-
 	int video_driver_index;
 #ifdef WASAPI_ENABLED
 	AudioDriverWASAPI driver_wasapi;
@@ -433,10 +430,6 @@ public:
 	virtual void _set_use_vsync(bool p_enable);
 	//virtual bool is_vsync_enabled() const;
 
-	virtual OS::PowerState get_power_state();
-	virtual int get_power_seconds_left();
-	virtual int get_power_percent_left();
-
 	virtual bool _check_internal_feature_support(const String &p_feature);
 
 	void disable_crash_handler();
diff --git a/platform/windows/power_windows.cpp b/platform/windows/power_windows.cpp
deleted file mode 100644
index aea06da413..0000000000
--- a/platform/windows/power_windows.cpp
+++ /dev/null
@@ -1,131 +0,0 @@
-/*************************************************************************/
-/*  power_windows.cpp                                                    */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-/*
-Adapted from corresponding SDL 2.0 code.
-*/
-
-/*
-  Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
-
-  This software is provided 'as-is', without any express or implied
-  warranty.  In no event will the authors be held liable for any damages
-  arising from the use of this software.
-
-  Permission is granted to anyone to use this software for any purpose,
-  including commercial applications, and to alter it and redistribute it
-  freely, subject to the following restrictions:
-
-  1. The origin of this software must not be misrepresented; you must not
-     claim that you wrote the original software. If you use this software
-     in a product, an acknowledgment in the product documentation would be
-     appreciated but is not required.
-  2. Altered source versions must be plainly marked as such, and must not be
-     misrepresented as being the original software.
-  3. This notice may not be removed or altered from any source distribution.
-*/
-
-#include "power_windows.h"
-
-// CODE CHUNK IMPORTED FROM SDL 2.0
-
-bool PowerWindows::GetPowerInfo_Windows() {
-	SYSTEM_POWER_STATUS status;
-	bool need_details = FALSE;
-
-	/* This API should exist back to Win95. */
-	if (!GetSystemPowerStatus(&status)) {
-		/* !!! FIXME: push GetLastError() into GetError() */
-		power_state = OS::POWERSTATE_UNKNOWN;
-	} else if (status.BatteryFlag == 0xFF) { /* unknown state */
-		power_state = OS::POWERSTATE_UNKNOWN;
-	} else if (status.BatteryFlag & (1 << 7)) { /* no battery */
-		power_state = OS::POWERSTATE_NO_BATTERY;
-	} else if (status.BatteryFlag & (1 << 3)) { /* charging */
-		power_state = OS::POWERSTATE_CHARGING;
-		need_details = TRUE;
-	} else if (status.ACLineStatus == 1) {
-		power_state = OS::POWERSTATE_CHARGED; /* on AC, not charging. */
-		need_details = TRUE;
-	} else {
-		power_state = OS::POWERSTATE_ON_BATTERY; /* not on AC. */
-		need_details = TRUE;
-	}
-
-	percent_left = -1;
-	nsecs_left = -1;
-	if (need_details) {
-		const int pct = (int)status.BatteryLifePercent;
-		const int secs = (int)status.BatteryLifeTime;
-
-		if (pct != 255) { /* 255 == unknown */
-			percent_left = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
-		}
-		if (secs != (int)0xFFFFFFFF) { /* ((DWORD)-1) == unknown */
-			nsecs_left = secs;
-		}
-	}
-
-	return TRUE; /* always the definitive answer on Windows. */
-}
-
-OS::PowerState PowerWindows::get_power_state() {
-	if (GetPowerInfo_Windows()) {
-		return power_state;
-	} else {
-		return OS::POWERSTATE_UNKNOWN;
-	}
-}
-
-int PowerWindows::get_power_seconds_left() {
-	if (GetPowerInfo_Windows()) {
-		return nsecs_left;
-	} else {
-		return -1;
-	}
-}
-
-int PowerWindows::get_power_percent_left() {
-	if (GetPowerInfo_Windows()) {
-		return percent_left;
-	} else {
-		return -1;
-	}
-}
-
-PowerWindows::PowerWindows() :
-		nsecs_left(-1),
-		percent_left(-1),
-		power_state(OS::POWERSTATE_UNKNOWN) {
-}
-
-PowerWindows::~PowerWindows() {
-}
diff --git a/platform/windows/power_windows.h b/platform/windows/power_windows.h
deleted file mode 100644
index 80d86a12c5..0000000000
--- a/platform/windows/power_windows.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*************************************************************************/
-/*  power_windows.h                                                      */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#ifndef POWER_WINDOWS_H
-#define POWER_WINDOWS_H
-
-#include "core/os/dir_access.h"
-#include "core/os/file_access.h"
-#include "core/os/os.h"
-
-#include <windows.h>
-
-class PowerWindows {
-
-private:
-	int nsecs_left;
-	int percent_left;
-	OS::PowerState power_state;
-
-	bool GetPowerInfo_Windows();
-
-public:
-	PowerWindows();
-	virtual ~PowerWindows();
-
-	OS::PowerState get_power_state();
-	int get_power_seconds_left();
-	int get_power_percent_left();
-};
-
-#endif // POWER_WINDOWS_H
diff --git a/platform/x11/SCsub b/platform/x11/SCsub
index 9027c244be..2268e4cc3d 100644
--- a/platform/x11/SCsub
+++ b/platform/x11/SCsub
@@ -12,7 +12,6 @@ common_x11 = [
     "os_x11.cpp",
     "key_mapping_x11.cpp",
     "joypad_linux.cpp",
-    "power_x11.cpp",
     "detect_prime.cpp"
 ]
 
diff --git a/platform/x11/os_x11.cpp b/platform/x11/os_x11.cpp
index 1fd91ec3c1..26170a8335 100644
--- a/platform/x11/os_x11.cpp
+++ b/platform/x11/os_x11.cpp
@@ -659,8 +659,6 @@ Error OS_X11::initialize(const VideoMode &p_desired, int p_video_driver, int p_a
 #endif
 	_ensure_user_data_dir();
 
-	power_manager = memnew(PowerX11);
-
 	if (p_desired.layered) {
 		set_window_per_pixel_transparency_enabled(true);
 	}
@@ -870,8 +868,6 @@ void OS_X11::finalize() {
 	visual_server->finish();
 	memdelete(visual_server);
 
-	memdelete(power_manager);
-
 #if defined(OPENGL_ENABLED)
 	if (video_driver_index == VIDEO_DRIVER_GLES2) {
 
@@ -3389,18 +3385,6 @@ void OS_X11::set_context(int p_context) {
 	}
 }
 
-OS::PowerState OS_X11::get_power_state() {
-	return power_manager->get_power_state();
-}
-
-int OS_X11::get_power_seconds_left() {
-	return power_manager->get_power_seconds_left();
-}
-
-int OS_X11::get_power_percent_left() {
-	return power_manager->get_power_percent_left();
-}
-
 void OS_X11::disable_crash_handler() {
 	crash_handler.disable();
 }
diff --git a/platform/x11/os_x11.h b/platform/x11/os_x11.h
index fd8a981763..55d24d64a3 100644
--- a/platform/x11/os_x11.h
+++ b/platform/x11/os_x11.h
@@ -39,7 +39,6 @@
 #include "drivers/unix/os_unix.h"
 #include "joypad_linux.h"
 #include "main/input_default.h"
-#include "power_x11.h"
 #include "servers/audio_server.h"
 #include "servers/visual/rasterizer.h"
 #include "servers/visual_server.h"
@@ -200,8 +199,6 @@ class OS_X11 : public OS_Unix {
 	AudioDriverPulseAudio driver_pulseaudio;
 #endif
 
-	PowerX11 *power_manager;
-
 	bool layered_window;
 
 	CrashHandler crash_handler;
@@ -323,10 +320,6 @@ public:
 	virtual void _set_use_vsync(bool p_enable);
 	//virtual bool is_vsync_enabled() const;
 
-	virtual OS::PowerState get_power_state();
-	virtual int get_power_seconds_left();
-	virtual int get_power_percent_left();
-
 	virtual bool _check_internal_feature_support(const String &p_feature);
 
 	virtual void force_process_input();
diff --git a/platform/x11/power_x11.cpp b/platform/x11/power_x11.cpp
deleted file mode 100644
index 5ac5e8e87b..0000000000
--- a/platform/x11/power_x11.cpp
+++ /dev/null
@@ -1,577 +0,0 @@
-/*************************************************************************/
-/*  power_x11.cpp                                                        */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-/*
-Adapted from corresponding SDL 2.0 code.
-*/
-
-/*
-  Simple DirectMedia Layer
-  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
-
-  This software is provided 'as-is', without any express or implied
-  warranty.  In no event will the authors be held liable for any damages
-  arising from the use of this software.
-
-  Permission is granted to anyone to use this software for any purpose,
-  including commercial applications, and to alter it and redistribute it
-  freely, subject to the following restrictions:
-
-  1. The origin of this software must not be misrepresented; you must not
-     claim that you wrote the original software. If you use this software
-     in a product, an acknowledgment in the product documentation would be
-     appreciated but is not required.
-  2. Altered source versions must be plainly marked as such, and must not be
-     misrepresented as being the original software.
-  3. This notice may not be removed or altered from any source distribution.
-*/
-
-#include "power_x11.h"
-
-#include <stdio.h>
-#include <unistd.h>
-
-#include "core/error_macros.h"
-#include <dirent.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-// CODE CHUNK IMPORTED FROM SDL 2.0
-
-static const char *proc_apm_path = "/proc/apm";
-static const char *proc_acpi_battery_path = "/proc/acpi/battery";
-static const char *proc_acpi_ac_adapter_path = "/proc/acpi/ac_adapter";
-static const char *sys_class_power_supply_path = "/sys/class/power_supply";
-
-FileAccessRef PowerX11::open_power_file(const char *base, const char *node, const char *key) {
-	String path = String(base) + String("/") + String(node) + String("/") + String(key);
-	FileAccessRef f = FileAccess::open(path, FileAccess::READ);
-	return f;
-}
-
-bool PowerX11::read_power_file(const char *base, const char *node, const char *key, char *buf, size_t buflen) {
-	ssize_t br = 0;
-	FileAccessRef fd = open_power_file(base, node, key);
-	if (!fd) {
-		return false;
-	}
-	br = fd->get_buffer(reinterpret_cast<uint8_t *>(buf), buflen - 1);
-	fd->close();
-	if (br < 0) {
-		return false;
-	}
-	buf[br] = '\0'; // null-terminate the string
-	return true;
-}
-
-bool PowerX11::make_proc_acpi_key_val(char **_ptr, char **_key, char **_val) {
-	char *ptr = *_ptr;
-
-	while (*ptr == ' ') {
-		ptr++; /* skip whitespace. */
-	}
-
-	if (*ptr == '\0') {
-		return false; /* EOF. */
-	}
-
-	*_key = ptr;
-
-	while ((*ptr != ':') && (*ptr != '\0')) {
-		ptr++;
-	}
-
-	if (*ptr == '\0') {
-		return false; /* (unexpected) EOF. */
-	}
-
-	*(ptr++) = '\0'; /* terminate the key. */
-
-	while (*ptr == ' ') {
-		ptr++; /* skip whitespace. */
-	}
-
-	if (*ptr == '\0') {
-		return false; /* (unexpected) EOF. */
-	}
-
-	*_val = ptr;
-
-	while ((*ptr != '\n') && (*ptr != '\0')) {
-		ptr++;
-	}
-
-	if (*ptr != '\0') {
-		*(ptr++) = '\0'; /* terminate the value. */
-	}
-
-	*_ptr = ptr; /* store for next time. */
-	return true;
-}
-
-void PowerX11::check_proc_acpi_battery(const char *node, bool *have_battery, bool *charging) {
-	const char *base = proc_acpi_battery_path;
-	char info[1024];
-	char state[1024];
-	char *ptr = NULL;
-	char *key = NULL;
-	char *val = NULL;
-	bool charge = false;
-	bool choose = false;
-	int maximum = -1;
-	int remaining = -1;
-	int secs = -1;
-	int pct = -1;
-
-	if (!read_power_file(base, node, "state", state, sizeof(state))) {
-		return;
-	} else {
-		if (!read_power_file(base, node, "info", info, sizeof(info)))
-			return;
-	}
-
-	ptr = &state[0];
-	while (make_proc_acpi_key_val(&ptr, &key, &val)) {
-		if (String(key) == "present") {
-			if (String(val) == "yes") {
-				*have_battery = true;
-			}
-		} else if (String(key) == "charging state") {
-			/* !!! FIXME: what exactly _does_ charging/discharging mean? */
-			if (String(val) == "charging/discharging") {
-				charge = true;
-			} else if (String(val) == "charging") {
-				charge = true;
-			}
-		} else if (String(key) == "remaining capacity") {
-			String sval = val;
-			const int cvt = sval.to_int();
-			remaining = cvt;
-		}
-	}
-
-	ptr = &info[0];
-	while (make_proc_acpi_key_val(&ptr, &key, &val)) {
-		if (String(key) == "design capacity") {
-			String sval = val;
-			const int cvt = sval.to_int();
-			maximum = cvt;
-		}
-	}
-
-	if ((maximum >= 0) && (remaining >= 0)) {
-		pct = (int)((((float)remaining) / ((float)maximum)) * 100.0f);
-		if (pct < 0) {
-			pct = 0;
-		} else if (pct > 100) {
-			pct = 100;
-		}
-	}
-
-	/* !!! FIXME: calculate (secs). */
-
-	/*
-	 * We pick the battery that claims to have the most minutes left.
-	 *  (failing a report of minutes, we'll take the highest percent.)
-	 */
-	// -- GODOT start --
-	//if ((secs < 0) && (this->nsecs_left < 0)) {
-	if (this->nsecs_left < 0) {
-		// -- GODOT end --
-		if ((pct < 0) && (this->percent_left < 0)) {
-			choose = true; /* at least we know there's a battery. */
-		}
-		if (pct > this->percent_left) {
-			choose = true;
-		}
-	} else if (secs > this->nsecs_left) {
-		choose = true;
-	}
-
-	if (choose) {
-		this->nsecs_left = secs;
-		this->percent_left = pct;
-		*charging = charge;
-	}
-}
-
-void PowerX11::check_proc_acpi_ac_adapter(const char *node, bool *have_ac) {
-	const char *base = proc_acpi_ac_adapter_path;
-	char state[256];
-	char *ptr = NULL;
-	char *key = NULL;
-	char *val = NULL;
-
-	if (!read_power_file(base, node, "state", state, sizeof(state))) {
-		return;
-	}
-
-	ptr = &state[0];
-	while (make_proc_acpi_key_val(&ptr, &key, &val)) {
-		String skey = key;
-		if (skey == "state") {
-			String sval = val;
-			if (sval == "on-line") {
-				*have_ac = true;
-			}
-		}
-	}
-}
-
-bool PowerX11::GetPowerInfo_Linux_proc_acpi() {
-	String node;
-	DirAccess *dirp = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
-	bool have_battery = false;
-	bool have_ac = false;
-	bool charging = false;
-
-	this->nsecs_left = -1;
-	this->percent_left = -1;
-	this->power_state = OS::POWERSTATE_UNKNOWN;
-
-	dirp->change_dir(proc_acpi_battery_path);
-	Error err = dirp->list_dir_begin();
-
-	if (err != OK) {
-		return false; /* can't use this interface. */
-	} else {
-		node = dirp->get_next();
-		while (node != "") {
-			check_proc_acpi_battery(node.utf8().get_data(), &have_battery, &charging /*, seconds, percent*/);
-			node = dirp->get_next();
-		}
-	}
-	dirp->change_dir(proc_acpi_ac_adapter_path);
-	err = dirp->list_dir_begin();
-	if (err != OK) {
-		return false; /* can't use this interface. */
-	} else {
-		node = dirp->get_next();
-		while (node != "") {
-			check_proc_acpi_ac_adapter(node.utf8().get_data(), &have_ac);
-			node = dirp->get_next();
-		}
-	}
-
-	if (!have_battery) {
-		this->power_state = OS::POWERSTATE_NO_BATTERY;
-	} else if (charging) {
-		this->power_state = OS::POWERSTATE_CHARGING;
-	} else if (have_ac) {
-		this->power_state = OS::POWERSTATE_CHARGED;
-	} else {
-		this->power_state = OS::POWERSTATE_ON_BATTERY;
-	}
-
-	memdelete(dirp);
-	return true; /* definitive answer. */
-}
-
-bool PowerX11::next_string(char **_ptr, char **_str) {
-	char *ptr = *_ptr;
-	char *str = *_str;
-
-	while (*ptr == ' ') { /* skip any spaces... */
-		ptr++;
-	}
-
-	if (*ptr == '\0') {
-		return false;
-	}
-
-	str = ptr;
-	while ((*ptr != ' ') && (*ptr != '\n') && (*ptr != '\0'))
-		ptr++;
-
-	if (*ptr != '\0')
-		*(ptr++) = '\0';
-
-	*_str = str;
-	*_ptr = ptr;
-	return true;
-}
-
-bool PowerX11::int_string(char *str, int *val) {
-	String sval = str;
-	*val = sval.to_int();
-	return (*str != '\0');
-}
-
-/* http://lxr.linux.no/linux+v2.6.29/drivers/char/apm-emulation.c */
-bool PowerX11::GetPowerInfo_Linux_proc_apm() {
-	bool need_details = false;
-	int ac_status = 0;
-	int battery_status = 0;
-	int battery_flag = 0;
-	int battery_percent = 0;
-	int battery_time = 0;
-	FileAccessRef fd = FileAccess::open(proc_apm_path, FileAccess::READ);
-	char buf[128];
-	char *ptr = &buf[0];
-	char *str = NULL;
-	ssize_t br;
-
-	if (!fd) {
-		return false; /* can't use this interface. */
-	}
-
-	br = fd->get_buffer(reinterpret_cast<uint8_t *>(buf), sizeof(buf) - 1);
-	fd->close();
-
-	if (br < 0) {
-		return false;
-	}
-
-	buf[br] = '\0'; /* null-terminate the string. */
-	if (!next_string(&ptr, &str)) { /* driver version */
-		return false;
-	}
-	if (!next_string(&ptr, &str)) { /* BIOS version */
-		return false;
-	}
-	if (!next_string(&ptr, &str)) { /* APM flags */
-		return false;
-	}
-
-	if (!next_string(&ptr, &str)) { /* AC line status */
-		return false;
-	} else if (!int_string(str, &ac_status)) {
-		return false;
-	}
-
-	if (!next_string(&ptr, &str)) { /* battery status */
-		return false;
-	} else if (!int_string(str, &battery_status)) {
-		return false;
-	}
-	if (!next_string(&ptr, &str)) { /* battery flag */
-		return false;
-	} else if (!int_string(str, &battery_flag)) {
-		return false;
-	}
-	if (!next_string(&ptr, &str)) { /* remaining battery life percent */
-		return false;
-	}
-	String sstr = str;
-	if (sstr[sstr.length() - 1] == '%') {
-		sstr[sstr.length() - 1] = '\0';
-	}
-	if (!int_string(str, &battery_percent)) {
-		return false;
-	}
-
-	if (!next_string(&ptr, &str)) { /* remaining battery life time */
-		return false;
-	} else if (!int_string(str, &battery_time)) {
-		return false;
-	}
-
-	if (!next_string(&ptr, &str)) { /* remaining battery life time units */
-		return false;
-	} else if (String(str) == "min") {
-		battery_time *= 60;
-	}
-
-	if (battery_flag == 0xFF) { /* unknown state */
-		this->power_state = OS::POWERSTATE_UNKNOWN;
-	} else if (battery_flag & (1 << 7)) { /* no battery */
-		this->power_state = OS::POWERSTATE_NO_BATTERY;
-	} else if (battery_flag & (1 << 3)) { /* charging */
-		this->power_state = OS::POWERSTATE_CHARGING;
-		need_details = true;
-	} else if (ac_status == 1) {
-		this->power_state = OS::POWERSTATE_CHARGED; /* on AC, not charging. */
-		need_details = true;
-	} else {
-		this->power_state = OS::POWERSTATE_ON_BATTERY;
-		need_details = true;
-	}
-
-	this->percent_left = -1;
-	this->nsecs_left = -1;
-	if (need_details) {
-		const int pct = battery_percent;
-		const int secs = battery_time;
-
-		if (pct >= 0) { /* -1 == unknown */
-			this->percent_left = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
-		}
-		if (secs >= 0) { /* -1 == unknown */
-			this->nsecs_left = secs;
-		}
-	}
-
-	return true;
-}
-
-/* !!! FIXME: implement d-bus queries to org.freedesktop.UPower. */
-
-bool PowerX11::GetPowerInfo_Linux_sys_class_power_supply(/*PowerState *state, int *seconds, int *percent*/) {
-	const char *base = sys_class_power_supply_path;
-	String name;
-
-	DirAccess *dirp = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
-	dirp->change_dir(base);
-	Error err = dirp->list_dir_begin();
-
-	if (err != OK) {
-		return false;
-	}
-
-	this->power_state = OS::POWERSTATE_NO_BATTERY; /* assume we're just plugged in. */
-	this->nsecs_left = -1;
-	this->percent_left = -1;
-
-	name = dirp->get_next();
-
-	while (name != "") {
-		bool choose = false;
-		char str[64];
-		OS::PowerState st;
-		int secs;
-		int pct;
-
-		if ((name == ".") || (name == "..")) {
-			name = dirp->get_next();
-			continue; //skip these, of course.
-		} else {
-			if (!read_power_file(base, name.utf8().get_data(), "type", str, sizeof(str))) {
-				name = dirp->get_next();
-				continue; // Don't know _what_ we're looking at. Give up on it.
-			} else {
-				if (String(str) != "Battery\n") {
-					name = dirp->get_next();
-					continue; // we don't care about UPS and such.
-				}
-			}
-		}
-
-		/* some drivers don't offer this, so if it's not explicitly reported assume it's present. */
-		if (read_power_file(base, name.utf8().get_data(), "present", str, sizeof(str)) && (String(str) == "0\n")) {
-			st = OS::POWERSTATE_NO_BATTERY;
-		} else if (!read_power_file(base, name.utf8().get_data(), "status", str, sizeof(str))) {
-			st = OS::POWERSTATE_UNKNOWN; /* uh oh */
-		} else if (String(str) == "Charging\n") {
-			st = OS::POWERSTATE_CHARGING;
-		} else if (String(str) == "Discharging\n") {
-			st = OS::POWERSTATE_ON_BATTERY;
-		} else if ((String(str) == "Full\n") || (String(str) == "Not charging\n")) {
-			st = OS::POWERSTATE_CHARGED;
-		} else {
-			st = OS::POWERSTATE_UNKNOWN; /* uh oh */
-		}
-
-		if (!read_power_file(base, name.utf8().get_data(), "capacity", str, sizeof(str))) {
-			pct = -1;
-		} else {
-			pct = String(str).to_int();
-			pct = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
-		}
-
-		if (!read_power_file(base, name.utf8().get_data(), "time_to_empty_now", str, sizeof(str))) {
-			secs = -1;
-		} else {
-			secs = String(str).to_int();
-			secs = (secs <= 0) ? -1 : secs; /* 0 == unknown */
-		}
-
-		/*
-		 * We pick the battery that claims to have the most minutes left.
-		 *  (failing a report of minutes, we'll take the highest percent.)
-		 */
-		if ((secs < 0) && (this->nsecs_left < 0)) {
-			if ((pct < 0) && (this->percent_left < 0)) {
-				choose = true; /* at least we know there's a battery. */
-			} else if (pct > this->percent_left) {
-				choose = true;
-			}
-		} else if (secs > this->nsecs_left) {
-			choose = true;
-		}
-
-		if (choose) {
-			this->nsecs_left = secs;
-			this->percent_left = pct;
-			this->power_state = st;
-		}
-
-		name = dirp->get_next();
-	}
-
-	memdelete(dirp);
-	return true; /* don't look any further*/
-}
-
-bool PowerX11::UpdatePowerInfo() {
-	if (GetPowerInfo_Linux_sys_class_power_supply()) { // try method 1
-		return true;
-	}
-	if (GetPowerInfo_Linux_proc_acpi()) { // try further
-		return true;
-	}
-	if (GetPowerInfo_Linux_proc_apm()) { // try even further
-		return true;
-	}
-	return false;
-}
-
-PowerX11::PowerX11() :
-		nsecs_left(-1),
-		percent_left(-1),
-		power_state(OS::POWERSTATE_UNKNOWN) {
-}
-
-PowerX11::~PowerX11() {
-}
-
-OS::PowerState PowerX11::get_power_state() {
-	if (UpdatePowerInfo()) {
-		return power_state;
-	} else {
-		return OS::POWERSTATE_UNKNOWN;
-	}
-}
-
-int PowerX11::get_power_seconds_left() {
-	if (UpdatePowerInfo()) {
-		return nsecs_left;
-	} else {
-		return -1;
-	}
-}
-
-int PowerX11::get_power_percent_left() {
-	if (UpdatePowerInfo()) {
-		return percent_left;
-	} else {
-		return -1;
-	}
-}
diff --git a/platform/x11/power_x11.h b/platform/x11/power_x11.h
deleted file mode 100644
index 76f20c68e8..0000000000
--- a/platform/x11/power_x11.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*************************************************************************/
-/*  power_x11.h                                                          */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#ifndef POWER_X11_H
-#define POWER_X11_H
-
-#include "core/os/dir_access.h"
-#include "core/os/file_access.h"
-#include "core/os/os.h"
-
-class PowerX11 {
-
-private:
-	int nsecs_left;
-	int percent_left;
-	OS::PowerState power_state;
-
-	FileAccessRef open_power_file(const char *base, const char *node, const char *key);
-	bool read_power_file(const char *base, const char *node, const char *key, char *buf, size_t buflen);
-	bool make_proc_acpi_key_val(char **_ptr, char **_key, char **_val);
-	void check_proc_acpi_battery(const char *node, bool *have_battery, bool *charging);
-	void check_proc_acpi_ac_adapter(const char *node, bool *have_ac);
-	bool GetPowerInfo_Linux_proc_acpi();
-	bool next_string(char **_ptr, char **_str);
-	bool int_string(char *str, int *val);
-	bool GetPowerInfo_Linux_proc_apm();
-	bool GetPowerInfo_Linux_sys_class_power_supply();
-	bool UpdatePowerInfo();
-
-public:
-	PowerX11();
-	virtual ~PowerX11();
-
-	OS::PowerState get_power_state();
-	int get_power_seconds_left();
-	int get_power_percent_left();
-};
-
-#endif // POWER_X11_H