/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	kills: 0,
	bestKills: 0
});

/**** 
* Classes
****/ 
var Checkpoint = Container.expand(function () {
	var self = Container.call(this);
	var checkpointGraphics = self.attachAsset('checkpoint', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.isCheckpoint = true;
	self.lastIntersecting = false;
	return self;
});
var Hazard = Container.expand(function () {
	var self = Container.call(this);
	var hazardGraphics = self.attachAsset('hazard', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.isDangerous = true;
	self.lastIntersecting = false;
	return self;
});
var Platform = Container.expand(function () {
	var self = Container.call(this);
	var platformGraphics = self.attachAsset('platform', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.isSolid = true;
	self.lastIntersecting = false;
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1a1a1a
});

/**** 
* Game Code
****/ 
var player = game.addChild(new Container());
var playerGraphics = player.attachAsset('player', {
	anchorX: 0.5,
	anchorY: 0.5
});
player.x = 100;
player.y = 2600;
player.velocityX = 0;
player.velocityY = 0;
player.isJumping = false;
player.isGrounded = false;
player.canWallRun = false;
player.wallRunDirection = 0; // -1 left, 1 right
player.moveLeft = false;
player.moveRight = false;
player.jumpPressed = false;
var platforms = [];
var hazards = [];
var checkpoints = [];
var currentCheckpoint = 0;
var gameTime = 0;
var levelStartTime = 0;
var levelComplete = false;
var statusText = new Text2('Reach the finish!', {
	size: 80,
	fill: '#ffffff'
});
statusText.anchor.set(0.5, 0);
LK.gui.top.addChild(statusText);
var timerText = new Text2('0.00s', {
	size: 100,
	fill: '#ffff00'
});
timerText.anchor.set(0.5, 0);
LK.gui.top.addChild(timerText);
function updateUI() {
	var elapsedTime = (gameTime - levelStartTime) / 1000;
	timerText.setText(elapsedTime.toFixed(2) + 's');
	if (levelComplete) {
		statusText.setText('Level Complete!');
	}
}
function createLevel() {
	// Starting platform
	var startPlatform = game.addChild(new Platform());
	startPlatform.x = 200;
	startPlatform.y = 2650;
	platforms.push(startPlatform);
	// Platform sequence
	var platformSequence = [{
		x: 500,
		y: 2450,
		w: 250,
		h: 40
	}, {
		x: 800,
		y: 2200,
		w: 250,
		h: 40
	}, {
		x: 1100,
		y: 2000,
		w: 250,
		h: 40
	}, {
		x: 1400,
		y: 1750,
		w: 250,
		h: 40
	}, {
		x: 1600,
		y: 1500,
		w: 200,
		h: 40
	}, {
		x: 1300,
		y: 1300,
		w: 200,
		h: 40
	}, {
		x: 900,
		y: 1100,
		w: 200,
		h: 40
	}, {
		x: 600,
		y: 900,
		w: 250,
		h: 40
	}, {
		x: 800,
		y: 650,
		w: 250,
		h: 40
	}, {
		x: 1200,
		y: 400,
		w: 300,
		h: 40
	}];
	for (var i = 0; i < platformSequence.length; i++) {
		var p = platformSequence[i];
		var platform = game.addChild(new Platform());
		platform.x = p.x;
		platform.y = p.y;
		platform.width = p.w;
		platform.height = p.h;
		platforms.push(platform);
	}
	// Add hazards
	var hazardSequence = [{
		x: 900,
		y: 1600
	}, {
		x: 1500,
		y: 900
	}, {
		x: 400,
		y: 500
	}];
	for (var h = 0; h < hazardSequence.length; h++) {
		var hazard = game.addChild(new Hazard());
		hazard.x = hazardSequence[h].x;
		hazard.y = hazardSequence[h].y;
		hazards.push(hazard);
	}
	// Add checkpoints
	var checkpoint1 = game.addChild(new Checkpoint());
	checkpoint1.x = 1100;
	checkpoint1.y = 2000;
	checkpoints.push(checkpoint1);
	var checkpoint2 = game.addChild(new Checkpoint());
	checkpoint2.x = 600;
	checkpoint2.y = 900;
	checkpoints.push(checkpoint2);
	var finishCheckpoint = game.addChild(new Checkpoint());
	finishCheckpoint.x = 1200;
	finishCheckpoint.y = 300;
	checkpoints.push(finishCheckpoint);
}
var GRAVITY = 0.5;
var JUMP_FORCE = -12;
var WALL_JUMP_FORCE = 8;
var MOVE_SPEED = 5;
var MAX_FALL_SPEED = 15;
function applyGravity() {
	if (!player.isGrounded && !player.canWallRun) {
		player.velocityY += GRAVITY;
		if (player.velocityY > MAX_FALL_SPEED) {
			player.velocityY = MAX_FALL_SPEED;
		}
	}
	player.y += player.velocityY;
}
function checkCollisions() {
	player.isGrounded = false;
	player.canWallRun = false;
	// Check platform collisions
	for (var i = 0; i < platforms.length; i++) {
		var platform = platforms[i];
		if (player.intersects(platform)) {
			// Landing on top of platform
			if (player.velocityY >= 0 && player.lastY + 30 <= platform.y) {
				player.y = platform.y - 30;
				player.velocityY = 0;
				player.isGrounded = true;
			} else if (player.velocityY < 0) {
				// Hit bottom of platform
				player.y = platform.y + 20;
				player.velocityY = 0;
			}
		}
	}
	// Check hazard collisions
	for (var h = 0; h < hazards.length; h++) {
		var hazard = hazards[h];
		if (!hazard.lastIntersecting && player.intersects(hazard)) {
			LK.effects.flashObject(player, 0xff0000, 300);
			LK.getSound('hit').play();
			// Reset to last checkpoint
			player.x = checkpoints[Math.max(0, currentCheckpoint - 1)].x;
			player.y = checkpoints[Math.max(0, currentCheckpoint - 1)].y + 100;
			player.velocityY = 0;
		}
		hazard.lastIntersecting = player.intersects(hazard);
	}
	// Check checkpoint collisions
	for (var c = 0; c < checkpoints.length; c++) {
		var checkpoint = checkpoints[c];
		if (!checkpoint.lastIntersecting && player.intersects(checkpoint)) {
			currentCheckpoint = c;
			LK.getSound('checkpoint').play();
			if (c === checkpoints.length - 1) {
				levelComplete = true;
			}
		}
		checkpoint.lastIntersecting = player.intersects(checkpoint);
	}
}
function handleJump() {
	if (player.jumpPressed) {
		if (player.isGrounded) {
			player.velocityY = JUMP_FORCE;
			player.isJumping = true;
			LK.getSound('jump').play();
		} else if (player.canWallRun) {
			player.velocityY = JUMP_FORCE;
			player.velocityX = WALL_JUMP_FORCE * -player.wallRunDirection;
			LK.getSound('jump').play();
		}
		player.jumpPressed = false;
	}
}
function endGame() {
	var finalTime = (gameTime - levelStartTime) / 1000;
	storage.bestTime = storage.bestTime || finalTime;
	if (finalTime < storage.bestTime) {
		storage.bestTime = finalTime;
	}
	LK.showGameOver();
}
game.down = function (x, y, obj) {
	var centerX = 2048 / 2;
	if (x < centerX) {
		player.moveLeft = true;
	} else {
		player.moveRight = true;
	}
	player.jumpPressed = true;
};
game.up = function (x, y, obj) {
	player.moveLeft = false;
	player.moveRight = false;
};
game.move = function (x, y, obj) {
	var centerX = 2048 / 2;
	if (x < centerX) {
		player.moveLeft = true;
		player.moveRight = false;
	} else {
		player.moveRight = true;
		player.moveLeft = false;
	}
};
game.update = function () {
	if (levelStartTime === 0) {
		levelStartTime = gameTime;
	}
	gameTime += 16.67;
	// Player horizontal movement
	if (player.moveLeft) {
		player.x = Math.max(0, player.x - MOVE_SPEED);
	}
	if (player.moveRight) {
		player.x = Math.min(2048, player.x + MOVE_SPEED);
	}
	// Apply gravity and check collisions
	player.lastY = player.y;
	applyGravity();
	checkCollisions();
	// Handle jump input
	handleJump();
	// Fall off screen
	if (player.y > 2732) {
		LK.effects.flashObject(player, 0xff0000, 300);
		LK.getSound('hit').play();
		player.x = 100;
		player.y = 2600;
		player.velocityY = 0;
		currentCheckpoint = 0;
		levelStartTime = 0;
	}
	// Update UI
	if (LK.ticks % 10 === 0) {
		updateUI();
	}
	// End game condition
	if (levelComplete) {
		endGame();
	}
};
createLevel();
LK.playMusic('bgmusic', {
	loop: true
});