Merge pull request #41230 from naithar/feature/pluggable-ios-modules

[iOS] [4.0] iOS Plugins

9 files changed, 649 insertions, 0 deletions

diff --git a/modules/gamecenter/SCsub b/modules/gamecenter/SCsub
new file mode 100644
index 0000000000..72fbf7ab0e
--- /dev/null
+++ b/modules/gamecenter/SCsub
@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+
+Import("env")
+Import("env_modules")
+
+env_gamecenter = env_modules.Clone()
+
+# (iOS) Enable module support
+env_gamecenter.Append(CCFLAGS=["-fmodules", "-fcxx-modules"])
+
+# (iOS) Build as separate static library
+modules_sources = []
+env_gamecenter.add_source_files(modules_sources, "*.cpp")
+env_gamecenter.add_source_files(modules_sources, "*.mm")
+mod_lib = env_modules.add_library("#bin/libgodot_gamecenter_module" + env["LIBSUFFIX"], modules_sources)
diff --git a/modules/gamecenter/config.py b/modules/gamecenter/config.py
new file mode 100644
index 0000000000..e68603fc93
--- /dev/null
+++ b/modules/gamecenter/config.py
@@ -0,0 +1,6 @@
+def can_build(env, platform):
+    return platform == "iphone"
+
+
+def configure(env):
+    pass
diff --git a/modules/gamecenter/game_center.h b/modules/gamecenter/game_center.h
new file mode 100644
index 0000000000..76fd295460
--- /dev/null
+++ b/modules/gamecenter/game_center.h
@@ -0,0 +1,71 @@
+/*************************************************************************/
+/*  game_center.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 GAME_CENTER_H
+#define GAME_CENTER_H
+
+#include "core/object/class_db.h"
+
+class GameCenter : public Object {
+	GDCLASS(GameCenter, Object);
+
+	static GameCenter *instance;
+	static void _bind_methods();
+
+	List<Variant> pending_events;
+
+	bool authenticated;
+
+	void return_connect_error(const char *p_error_description);
+
+public:
+	Error authenticate();
+	bool is_authenticated();
+
+	Error post_score(Dictionary p_score);
+	Error award_achievement(Dictionary p_params);
+	void reset_achievements();
+	void request_achievements();
+	void request_achievement_descriptions();
+	Error show_game_center(Dictionary p_params);
+	Error request_identity_verification_signature();
+
+	void game_center_closed();
+
+	int get_pending_event_count();
+	Variant pop_pending_event();
+
+	static GameCenter *get_singleton();
+
+	GameCenter();
+	~GameCenter();
+};
+
+#endif
diff --git a/modules/gamecenter/game_center.mm b/modules/gamecenter/game_center.mm
new file mode 100644
index 0000000000..114f639a32
--- /dev/null
+++ b/modules/gamecenter/game_center.mm
@@ -0,0 +1,380 @@
+/*************************************************************************/
+/*  game_center.mm                                                       */
+/*************************************************************************/
+/*                       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 "game_center.h"
+#import "platform/iphone/app_delegate.h"
+
+#import "game_center_delegate.h"
+#import "platform/iphone/view_controller.h"
+#import <GameKit/GameKit.h>
+
+GameCenter *GameCenter::instance = NULL;
+GodotGameCenterDelegate *gameCenterDelegate = nil;
+
+void GameCenter::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("authenticate"), &GameCenter::authenticate);
+	ClassDB::bind_method(D_METHOD("is_authenticated"), &GameCenter::is_authenticated);
+
+	ClassDB::bind_method(D_METHOD("post_score"), &GameCenter::post_score);
+	ClassDB::bind_method(D_METHOD("award_achievement", "achievement"), &GameCenter::award_achievement);
+	ClassDB::bind_method(D_METHOD("reset_achievements"), &GameCenter::reset_achievements);
+	ClassDB::bind_method(D_METHOD("request_achievements"), &GameCenter::request_achievements);
+	ClassDB::bind_method(D_METHOD("request_achievement_descriptions"), &GameCenter::request_achievement_descriptions);
+	ClassDB::bind_method(D_METHOD("show_game_center"), &GameCenter::show_game_center);
+	ClassDB::bind_method(D_METHOD("request_identity_verification_signature"), &GameCenter::request_identity_verification_signature);
+
+	ClassDB::bind_method(D_METHOD("get_pending_event_count"), &GameCenter::get_pending_event_count);
+	ClassDB::bind_method(D_METHOD("pop_pending_event"), &GameCenter::pop_pending_event);
+};
+
+Error GameCenter::authenticate() {
+	//if this class isn't available, game center isn't implemented
+	if ((NSClassFromString(@"GKLocalPlayer")) == nil) {
+		return ERR_UNAVAILABLE;
+	}
+
+	GKLocalPlayer *player = [GKLocalPlayer localPlayer];
+	ERR_FAIL_COND_V(![player respondsToSelector:@selector(authenticateHandler)], ERR_UNAVAILABLE);
+
+	UIViewController *root_controller = [[UIApplication sharedApplication] delegate].window.rootViewController;
+	ERR_FAIL_COND_V(!root_controller, FAILED);
+
+	// This handler is called several times.  First when the view needs to be shown, then again
+	// after the view is cancelled or the user logs in.  Or if the user's already logged in, it's
+	// called just once to confirm they're authenticated.  This is why no result needs to be specified
+	// in the presentViewController phase. In this case, more calls to this function will follow.
+	_weakify(root_controller);
+	_weakify(player);
+	player.authenticateHandler = (^(UIViewController *controller, NSError *error) {
+		_strongify(root_controller);
+		_strongify(player);
+
+		if (controller) {
+			[root_controller presentViewController:controller animated:YES completion:nil];
+		} else {
+			Dictionary ret;
+			ret["type"] = "authentication";
+			if (player.isAuthenticated) {
+				ret["result"] = "ok";
+				if (@available(iOS 13, *)) {
+					ret["player_id"] = [player.teamPlayerID UTF8String];
+#if !defined(TARGET_OS_SIMULATOR) || !TARGET_OS_SIMULATOR
+				} else {
+					ret["player_id"] = [player.playerID UTF8String];
+#endif
+				}
+
+				GameCenter::get_singleton()->authenticated = true;
+			} else {
+				ret["result"] = "error";
+				ret["error_code"] = (int64_t)error.code;
+				ret["error_description"] = [error.localizedDescription UTF8String];
+				GameCenter::get_singleton()->authenticated = false;
+			};
+
+			pending_events.push_back(ret);
+		};
+	});
+
+	return OK;
+};
+
+bool GameCenter::is_authenticated() {
+	return authenticated;
+};
+
+Error GameCenter::post_score(Dictionary p_score) {
+	ERR_FAIL_COND_V(!p_score.has("score") || !p_score.has("category"), ERR_INVALID_PARAMETER);
+	float score = p_score["score"];
+	String category = p_score["category"];
+
+	NSString *cat_str = [[NSString alloc] initWithUTF8String:category.utf8().get_data()];
+	GKScore *reporter = [[GKScore alloc] initWithLeaderboardIdentifier:cat_str];
+	reporter.value = score;
+
+	ERR_FAIL_COND_V([GKScore respondsToSelector:@selector(reportScores)], ERR_UNAVAILABLE);
+
+	[GKScore reportScores:@[ reporter ]
+			withCompletionHandler:^(NSError *error) {
+				Dictionary ret;
+				ret["type"] = "post_score";
+				if (error == nil) {
+					ret["result"] = "ok";
+				} else {
+					ret["result"] = "error";
+					ret["error_code"] = (int64_t)error.code;
+					ret["error_description"] = [error.localizedDescription UTF8String];
+				};
+
+				pending_events.push_back(ret);
+			}];
+
+	return OK;
+};
+
+Error GameCenter::award_achievement(Dictionary p_params) {
+	ERR_FAIL_COND_V(!p_params.has("name") || !p_params.has("progress"), ERR_INVALID_PARAMETER);
+	String name = p_params["name"];
+	float progress = p_params["progress"];
+
+	NSString *name_str = [[NSString alloc] initWithUTF8String:name.utf8().get_data()];
+	GKAchievement *achievement = [[GKAchievement alloc] initWithIdentifier:name_str];
+	ERR_FAIL_COND_V(!achievement, FAILED);
+
+	ERR_FAIL_COND_V([GKAchievement respondsToSelector:@selector(reportAchievements)], ERR_UNAVAILABLE);
+
+	achievement.percentComplete = progress;
+	achievement.showsCompletionBanner = NO;
+	if (p_params.has("show_completion_banner")) {
+		achievement.showsCompletionBanner = p_params["show_completion_banner"] ? YES : NO;
+	}
+
+	[GKAchievement reportAchievements:@[ achievement ]
+				withCompletionHandler:^(NSError *error) {
+					Dictionary ret;
+					ret["type"] = "award_achievement";
+					if (error == nil) {
+						ret["result"] = "ok";
+					} else {
+						ret["result"] = "error";
+						ret["error_code"] = (int64_t)error.code;
+					};
+
+					pending_events.push_back(ret);
+				}];
+
+	return OK;
+};
+
+void GameCenter::request_achievement_descriptions() {
+	[GKAchievementDescription loadAchievementDescriptionsWithCompletionHandler:^(NSArray *descriptions, NSError *error) {
+		Dictionary ret;
+		ret["type"] = "achievement_descriptions";
+		if (error == nil) {
+			ret["result"] = "ok";
+			PackedStringArray names;
+			PackedStringArray titles;
+			PackedStringArray unachieved_descriptions;
+			PackedStringArray achieved_descriptions;
+			PackedInt32Array maximum_points;
+			Array hidden;
+			Array replayable;
+
+			for (NSUInteger i = 0; i < [descriptions count]; i++) {
+				GKAchievementDescription *description = [descriptions objectAtIndex:i];
+
+				const char *str = [description.identifier UTF8String];
+				names.push_back(String::utf8(str != NULL ? str : ""));
+
+				str = [description.title UTF8String];
+				titles.push_back(String::utf8(str != NULL ? str : ""));
+
+				str = [description.unachievedDescription UTF8String];
+				unachieved_descriptions.push_back(String::utf8(str != NULL ? str : ""));
+
+				str = [description.achievedDescription UTF8String];
+				achieved_descriptions.push_back(String::utf8(str != NULL ? str : ""));
+
+				maximum_points.push_back(description.maximumPoints);
+
+				hidden.push_back(description.hidden == YES);
+
+				replayable.push_back(description.replayable == YES);
+			}
+
+			ret["names"] = names;
+			ret["titles"] = titles;
+			ret["unachieved_descriptions"] = unachieved_descriptions;
+			ret["achieved_descriptions"] = achieved_descriptions;
+			ret["maximum_points"] = maximum_points;
+			ret["hidden"] = hidden;
+			ret["replayable"] = replayable;
+
+		} else {
+			ret["result"] = "error";
+			ret["error_code"] = (int64_t)error.code;
+		};
+
+		pending_events.push_back(ret);
+	}];
+};
+
+void GameCenter::request_achievements() {
+	[GKAchievement loadAchievementsWithCompletionHandler:^(NSArray *achievements, NSError *error) {
+		Dictionary ret;
+		ret["type"] = "achievements";
+		if (error == nil) {
+			ret["result"] = "ok";
+			PackedStringArray names;
+			PackedFloat32Array percentages;
+
+			for (NSUInteger i = 0; i < [achievements count]; i++) {
+				GKAchievement *achievement = [achievements objectAtIndex:i];
+				const char *str = [achievement.identifier UTF8String];
+				names.push_back(String::utf8(str != NULL ? str : ""));
+
+				percentages.push_back(achievement.percentComplete);
+			}
+
+			ret["names"] = names;
+			ret["progress"] = percentages;
+
+		} else {
+			ret["result"] = "error";
+			ret["error_code"] = (int64_t)error.code;
+		};
+
+		pending_events.push_back(ret);
+	}];
+};
+
+void GameCenter::reset_achievements() {
+	[GKAchievement resetAchievementsWithCompletionHandler:^(NSError *error) {
+		Dictionary ret;
+		ret["type"] = "reset_achievements";
+		if (error == nil) {
+			ret["result"] = "ok";
+		} else {
+			ret["result"] = "error";
+			ret["error_code"] = (int64_t)error.code;
+		};
+
+		pending_events.push_back(ret);
+	}];
+};
+
+Error GameCenter::show_game_center(Dictionary p_params) {
+	ERR_FAIL_COND_V(!NSProtocolFromString(@"GKGameCenterControllerDelegate"), FAILED);
+
+	GKGameCenterViewControllerState view_state = GKGameCenterViewControllerStateDefault;
+	if (p_params.has("view")) {
+		String view_name = p_params["view"];
+		if (view_name == "default") {
+			view_state = GKGameCenterViewControllerStateDefault;
+		} else if (view_name == "leaderboards") {
+			view_state = GKGameCenterViewControllerStateLeaderboards;
+		} else if (view_name == "achievements") {
+			view_state = GKGameCenterViewControllerStateAchievements;
+		} else if (view_name == "challenges") {
+			view_state = GKGameCenterViewControllerStateChallenges;
+		} else {
+			return ERR_INVALID_PARAMETER;
+		}
+	}
+
+	GKGameCenterViewController *controller = [[GKGameCenterViewController alloc] init];
+	ERR_FAIL_COND_V(!controller, FAILED);
+
+	UIViewController *root_controller = [[UIApplication sharedApplication] delegate].window.rootViewController;
+	ERR_FAIL_COND_V(!root_controller, FAILED);
+
+	controller.gameCenterDelegate = gameCenterDelegate;
+	controller.viewState = view_state;
+	if (view_state == GKGameCenterViewControllerStateLeaderboards) {
+		controller.leaderboardIdentifier = nil;
+		if (p_params.has("leaderboard_name")) {
+			String name = p_params["leaderboard_name"];
+			NSString *name_str = [[NSString alloc] initWithUTF8String:name.utf8().get_data()];
+			controller.leaderboardIdentifier = name_str;
+		}
+	}
+
+	[root_controller presentViewController:controller animated:YES completion:nil];
+
+	return OK;
+};
+
+Error GameCenter::request_identity_verification_signature() {
+	ERR_FAIL_COND_V(!is_authenticated(), ERR_UNAUTHORIZED);
+
+	GKLocalPlayer *player = [GKLocalPlayer localPlayer];
+	[player generateIdentityVerificationSignatureWithCompletionHandler:^(NSURL *publicKeyUrl, NSData *signature, NSData *salt, uint64_t timestamp, NSError *error) {
+		Dictionary ret;
+		ret["type"] = "identity_verification_signature";
+		if (error == nil) {
+			ret["result"] = "ok";
+			ret["public_key_url"] = [publicKeyUrl.absoluteString UTF8String];
+			ret["signature"] = [[signature base64EncodedStringWithOptions:0] UTF8String];
+			ret["salt"] = [[salt base64EncodedStringWithOptions:0] UTF8String];
+			ret["timestamp"] = timestamp;
+			if (@available(iOS 13, *)) {
+				ret["player_id"] = [player.teamPlayerID UTF8String];
+#if !defined(TARGET_OS_SIMULATOR) || !TARGET_OS_SIMULATOR
+			} else {
+				ret["player_id"] = [player.playerID UTF8String];
+#endif
+			}
+		} else {
+			ret["result"] = "error";
+			ret["error_code"] = (int64_t)error.code;
+			ret["error_description"] = [error.localizedDescription UTF8String];
+		};
+
+		pending_events.push_back(ret);
+	}];
+
+	return OK;
+};
+
+void GameCenter::game_center_closed() {
+	Dictionary ret;
+	ret["type"] = "show_game_center";
+	ret["result"] = "ok";
+	pending_events.push_back(ret);
+}
+
+int GameCenter::get_pending_event_count() {
+	return pending_events.size();
+};
+
+Variant GameCenter::pop_pending_event() {
+	Variant front = pending_events.front()->get();
+	pending_events.pop_front();
+
+	return front;
+};
+
+GameCenter *GameCenter::get_singleton() {
+	return instance;
+};
+
+GameCenter::GameCenter() {
+	ERR_FAIL_COND(instance != NULL);
+	instance = this;
+	authenticated = false;
+
+	gameCenterDelegate = [[GodotGameCenterDelegate alloc] init];
+};
+
+GameCenter::~GameCenter() {
+	if (gameCenterDelegate) {
+		gameCenterDelegate = nil;
+	}
+}
diff --git a/modules/gamecenter/game_center_delegate.h b/modules/gamecenter/game_center_delegate.h
new file mode 100644
index 0000000000..1b7025f915
--- /dev/null
+++ b/modules/gamecenter/game_center_delegate.h
@@ -0,0 +1,35 @@
+/*************************************************************************/
+/*  game_center_delegate.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.                */
+/*************************************************************************/
+
+#import <GameKit/GameKit.h>
+
+@interface GodotGameCenterDelegate : NSObject <GKGameCenterControllerDelegate>
+
+@end
diff --git a/modules/gamecenter/game_center_delegate.mm b/modules/gamecenter/game_center_delegate.mm
new file mode 100644
index 0000000000..9a10c439c6
--- /dev/null
+++ b/modules/gamecenter/game_center_delegate.mm
@@ -0,0 +1,45 @@
+/*************************************************************************/
+/*  game_center_delegate.mm                                              */
+/*************************************************************************/
+/*                       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.                */
+/*************************************************************************/
+
+#import "game_center_delegate.h"
+
+#include "game_center.h"
+
+@implementation GodotGameCenterDelegate
+
+- (void)gameCenterViewControllerDidFinish:(GKGameCenterViewController *)gameCenterViewController {
+	//[gameCenterViewController dismissViewControllerAnimated:YES completion:^{GameCenter::get_singleton()->game_center_closed();}];//version for signaling when overlay is completely gone
+	if (GameCenter::get_singleton()) {
+		GameCenter::get_singleton()->game_center_closed();
+	}
+	[gameCenterViewController dismissViewControllerAnimated:YES completion:nil];
+}
+
+@end
diff --git a/modules/gamecenter/game_center_module.cpp b/modules/gamecenter/game_center_module.cpp
new file mode 100644
index 0000000000..6c5157345f
--- /dev/null
+++ b/modules/gamecenter/game_center_module.cpp
@@ -0,0 +1,48 @@
+/*************************************************************************/
+/*  game_center_module.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 "game_center_module.h"
+
+#include "core/config/engine.h"
+
+#include "game_center.h"
+
+GameCenter *game_center;
+
+void register_gamecenter_types() {
+	game_center = memnew(GameCenter);
+	Engine::get_singleton()->add_singleton(Engine::Singleton("GameCenter", game_center));
+}
+
+void unregister_gamecenter_types() {
+	if (game_center) {
+		memdelete(game_center);
+	}
+}
diff --git a/modules/gamecenter/game_center_module.h b/modules/gamecenter/game_center_module.h
new file mode 100644
index 0000000000..8da3ae02ee
--- /dev/null
+++ b/modules/gamecenter/game_center_module.h
@@ -0,0 +1,32 @@
+/*************************************************************************/
+/*  game_center_module.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.                */
+/*************************************************************************/
+
+void register_gamecenter_types();
+void unregister_gamecenter_types();
diff --git a/modules/gamecenter/gamecenter.gdip b/modules/gamecenter/gamecenter.gdip
new file mode 100644
index 0000000000..eb44effbdd
--- /dev/null
+++ b/modules/gamecenter/gamecenter.gdip
@@ -0,0 +1,17 @@
+[config]
+name="GameCenter"
+binary="gamecenter_lib.a"
+
+initialization="register_gamecenter_types"
+deinitialization="unregister_gamecenter_types"
+
+[dependencies]
+linked=[]
+embedded=[]
+system=["GameKit.framework"]
+
+capabilities=["gamekit"]
+
+files=[]
+
+[plist]