godot/platform/iphone/game_center.mm

/*************************************************************************/
/*  game_center.mm                                                       */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
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/* a copy of this software and associated documentation files (the       */
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#ifdef GAME_CENTER_ENABLED

#include "game_center.h"

#ifdef __IPHONE_9_0

#import <GameKit/GameKit.h>
extern "C" {

#else

extern "C" {
#import <GameKit/GameKit.h>

#endif

#import "app_delegate.h"
};

GameCenter* GameCenter::instance = NULL;

void GameCenter::_bind_methods() {
	ClassDB::bind_method(_MD("connect"),&GameCenter::connect);
	ClassDB::bind_method(_MD("is_connected"),&GameCenter::is_connected);

	ClassDB::bind_method(_MD("post_score"),&GameCenter::post_score);
	ClassDB::bind_method(_MD("award_achievement"),&GameCenter::award_achievement);
	ClassDB::bind_method(_MD("reset_achievements"),&GameCenter::reset_achievements);
	ClassDB::bind_method(_MD("request_achievements"),&GameCenter::request_achievements);
	ClassDB::bind_method(_MD("request_achievement_descriptions"),&GameCenter::request_achievement_descriptions);
	ClassDB::bind_method(_MD("show_game_center"),&GameCenter::show_game_center);

	ClassDB::bind_method(_MD("get_pending_event_count"),&GameCenter::get_pending_event_count);
	ClassDB::bind_method(_MD("pop_pending_event"),&GameCenter::pop_pending_event);
};


Error GameCenter::connect() {

	//if this class isn't available, game center isn't implemented
	if ((NSClassFromString(@"GKLocalPlayer")) == nil) {
		GameCenter::get_singleton()->connected = false;
		return ERR_UNAVAILABLE;
	}

	GKLocalPlayer* player = [GKLocalPlayer localPlayer];
	ERR_FAIL_COND_V(![player respondsToSelector:@selector(authenticateHandler)], ERR_UNAVAILABLE);

	ViewController *root_controller=(ViewController *)((AppDelegate *)[[UIApplication sharedApplication] delegate]).window.rootViewController;
	ERR_FAIL_COND_V(!root_controller, FAILED);

    //this handler is called serveral 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.
	player.authenticateHandler = (^(UIViewController *controller, NSError *error) {
        if (controller) {
            [root_controller presentViewController:controller animated:YES completion:nil];
        }
        else {
            Dictionary ret;
            ret["type"] = "authentication";
            if (player.isAuthenticated) {
                ret["result"] = "ok";
                GameCenter::get_singleton()->connected = true;
            } else {
                ret["result"] = "error";
                ret["error_code"] = error.code;
                ret["error_description"] = [error.localizedDescription UTF8String];
                GameCenter::get_singleton()->connected = false;
            };

            pending_events.push_back(ret);
        };

	});

	return OK;
};

bool GameCenter::is_connected() {
	return connected;
};

Error GameCenter::post_score(Variant p_score) {

	Dictionary params = p_score;
	ERR_FAIL_COND_V(!params.has("score") || !params.has("category"), ERR_INVALID_PARAMETER);
	float score = params["score"];
	String category = params["category"];

	NSString* cat_str = [[[NSString alloc] initWithUTF8String:category.utf8().get_data()] autorelease];
	GKScore* reporter = [[[GKScore alloc] initWithCategory:cat_str] autorelease];
	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"] = error.code;
			ret["error_description"] = [error.localizedDescription UTF8String];
		};

		pending_events.push_back(ret);
	}];

	return OK;
};

Error GameCenter::award_achievement(Variant p_params) {

	Dictionary params = p_params;
	ERR_FAIL_COND_V(!params.has("name") || !params.has("progress"), ERR_INVALID_PARAMETER);
	String name = params["name"];
	float progress = params["progress"];

	NSString* name_str = [[[NSString alloc] initWithUTF8String:name.utf8().get_data()] autorelease];
	GKAchievement* achievement = [[[GKAchievement alloc] initWithIdentifier: name_str] autorelease];
	ERR_FAIL_COND_V(!achievement, FAILED);

	ERR_FAIL_COND_V([GKAchievement respondsToSelector:@selector(reportAchievements)], ERR_UNAVAILABLE);

	achievement.percentComplete = progress;
	achievement.showsCompletionBanner = NO;
	if (params.has("show_completion_banner")) {
		achievement.showsCompletionBanner = 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"] = 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";
			PoolStringArray names;
			PoolStringArray titles;
			PoolStringArray unachieved_descriptions;
			PoolStringArray achieved_descriptions;
			PoolIntArray maximum_points;
			Array hidden;
			Array replayable;

			for (int 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"] = 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";
			PoolStringArray names;
			PoolRealArray percentages;

			for (int 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"] = 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"] = error.code;
		};

		pending_events.push_back(ret);
	}];
};

Error GameCenter::show_game_center(Variant p_params) {

	ERR_FAIL_COND_V(!NSProtocolFromString(@"GKGameCenterControllerDelegate"), FAILED);

	Dictionary params = p_params;

	GKGameCenterViewControllerState view_state = GKGameCenterViewControllerStateDefault;
	if (params.has("view")) {
		String view_name = 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);

	ViewController *root_controller=(ViewController *)((AppDelegate *)[[UIApplication sharedApplication] delegate]).window.rootViewController;
	ERR_FAIL_COND_V(!root_controller, FAILED);

	controller.gameCenterDelegate = root_controller;
	controller.viewState = view_state;
	if (view_state == GKGameCenterViewControllerStateLeaderboards) {
		controller.leaderboardIdentifier = nil;
		if (params.has("leaderboard_name")) {
			String name = params["leaderboard_name"];
			NSString* name_str = [[[NSString alloc] initWithUTF8String:name.utf8().get_data()] autorelease];
			controller.leaderboardIdentifier = name_str;
		}
	}

	[root_controller presentViewController: controller animated: YES completion:nil];

	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;
	connected = false;
};


GameCenter::~GameCenter() {

};

#endif