From f665200df7bd6d1660f6dd8255ad66f5c675770d Mon Sep 17 00:00:00 2001
From: Wilhem Barbier <nounoursheureux@openmailbox.org>
Date: Wed, 15 Jun 2016 07:25:35 +0200
Subject: Add joystick vibration support on Linux (#5043)

---
 main/input_default.cpp | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 main/input_default.h   | 17 +++++++++++++++++
 2 files changed, 64 insertions(+)

(limited to 'main')

diff --git a/main/input_default.cpp b/main/input_default.cpp
index e36306727d..a6f14ae1f5 100644
--- a/main/input_default.cpp
+++ b/main/input_default.cpp
@@ -137,6 +137,30 @@ String InputDefault::get_joy_name(int p_idx) {
 	return joy_names[p_idx].name;
 };
 
+Vector2 InputDefault::get_joy_vibration_strength(int p_device) {
+	if (joy_vibration.has(p_device)) {
+		return Vector2(joy_vibration[p_device].weak_magnitude, joy_vibration[p_device].strong_magnitude);
+	} else {
+		return Vector2(0, 0);
+	}
+}
+
+uint64_t InputDefault::get_joy_vibration_timestamp(int p_device) {
+	if (joy_vibration.has(p_device)) {
+		return joy_vibration[p_device].timestamp;
+	} else {
+		return 0;
+	}
+}
+
+float InputDefault::get_joy_vibration_duration(int p_device) {
+	if (joy_vibration.has(p_device)) {
+		return joy_vibration[p_device].duration;
+	} else {
+		return 0.f;
+	}
+}
+
 static String _hex_str(uint8_t p_byte) {
 
 	static const char* dict = "0123456789abcdef";
@@ -294,6 +318,29 @@ void InputDefault::set_joy_axis(int p_device,int p_axis,float p_value) {
 	_joy_axis[c]=p_value;
 }
 
+void InputDefault::start_joy_vibration(int p_device, float p_weak_magnitude, float p_strong_magnitude, float p_duration) {
+	_THREAD_SAFE_METHOD_
+	if (p_weak_magnitude < 0.f || p_weak_magnitude > 1.f || p_strong_magnitude < 0.f || p_strong_magnitude > 1.f) {
+		return;
+	}
+	VibrationInfo vibration;
+	vibration.weak_magnitude = p_weak_magnitude;
+	vibration.strong_magnitude = p_strong_magnitude;
+	vibration.duration = p_duration;
+	vibration.timestamp = OS::get_singleton()->get_unix_time();
+	joy_vibration[p_device] = vibration;
+}
+
+void InputDefault::stop_joy_vibration(int p_device) {
+	_THREAD_SAFE_METHOD_
+	VibrationInfo vibration;
+	vibration.weak_magnitude = 0;
+	vibration.strong_magnitude = 0;
+	vibration.duration = 0;
+	vibration.timestamp = OS::get_singleton()->get_unix_time();
+	joy_vibration[p_device] = vibration;
+}
+
 void InputDefault::set_accelerometer(const Vector3& p_accel) {
 
 	_THREAD_SAFE_METHOD_
diff --git a/main/input_default.h b/main/input_default.h
index 8f6a430436..01b813f3ca 100644
--- a/main/input_default.h
+++ b/main/input_default.h
@@ -3,6 +3,7 @@
 
 #include "os/input.h"
 
+
 class InputDefault : public Input {
 
 	OBJ_TYPE( InputDefault, Input );
@@ -19,6 +20,16 @@ class InputDefault : public Input {
 	MainLoop *main_loop;
 
 	bool emulate_touch;
+
+	struct VibrationInfo {
+		float weak_magnitude;
+		float strong_magnitude;
+		float duration; // Duration in seconds
+		uint64_t timestamp;
+	};
+
+	Map<int, VibrationInfo> joy_vibration;
+
 	struct SpeedTrack {
 
 		uint64_t last_tick;
@@ -129,6 +140,9 @@ public:
 
 	virtual float get_joy_axis(int p_device,int p_axis);
 	String get_joy_name(int p_idx);
+	virtual Vector2 get_joy_vibration_strength(int p_device);
+	virtual float get_joy_vibration_duration(int p_device);
+	virtual uint64_t get_joy_vibration_timestamp(int p_device);
 	void joy_connection_changed(int p_idx, bool p_connected, String p_name, String p_guid = "");
 	void parse_joystick_mapping(String p_mapping, bool p_update_existing);
 
@@ -147,6 +161,9 @@ public:
 	void set_magnetometer(const Vector3& p_magnetometer);
 	void set_joy_axis(int p_device,int p_axis,float p_value);
 
+	virtual void start_joy_vibration(int p_device, float p_weak_magnitude, float p_strong_magnitude, float p_duration);
+	virtual void stop_joy_vibration(int p_device);
+
 	void set_main_loop(MainLoop *main_loop);
 	void set_mouse_pos(const Point2& p_posf);
 
-- 
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