/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
// Player Ball
var Ball = Container.expand(function () {
	var self = Container.call(this);
	var ballGfx = self.attachAsset('ball', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Gun graphic (use separate 'gun' asset, as gun barrel)
	var gunGfx = self.attachAsset('gun', {
		anchorX: 0.5,
		// center horizontally
		anchorY: 0.85,
		// anchor at base of gun
		scaleX: 1,
		scaleY: 1,
		rotation: 0
	});
	gunGfx.y = -ballGfx.height * 0.08; // slightly above center
	self.gunGfx = gunGfx;
	// For possible future use
	self.radius = ballGfx.width / 2;
	// Track gun angle (radians)
	self.gunAngle = -Math.PI / 2; // default up
	// Method to set gun angle
	self.setGunAngle = function (angle) {
		self.gunAngle = angle;
		self.gunGfx.rotation = angle;
	};
	return self;
});
// Bullet
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGfx = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Direction (unit vector)
	self.dx = 0;
	self.dy = -1;
	self.speed = 40; // px per frame
	self.update = function () {
		self.x += self.dx * self.speed;
		self.y += self.dy * self.speed;
	};
	return self;
});
// Stone Wall
var StoneWall = Container.expand(function () {
	var self = Container.call(this);
	// Make the wall as wide as the game area
	var wallGfx = self.attachAsset('stonewall', {
		width: 2048,
		height: 80,
		color: 0x888888,
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Wall health and lives
	self.maxHits = 5; // Number of attacks required to damage wall health
	self.hits = 0; // Current number of attacks taken in this cycle
	self.lives = 5; // Wall health (number of times wall can be damaged)
	// Show wall health as text
	self.healthTxt = new Text2("Wall: " + (self.maxHits - self.hits) + " / " + self.maxHits + "\nLives: " + self.lives, {
		size: 48,
		fill: "#fff"
	});
	self.healthTxt.anchor.set(0.5, 0.5);
	self.healthTxt.y = 0;
	self.addChild(self.healthTxt);
	// Method to update health text
	self.updateHealthText = function () {
		self.healthTxt.setText("Wall: " + (self.maxHits - self.hits) + " / " + self.maxHits + "\nLives: " + self.lives);
	};
	// Method to handle a tomato hit
	self.hitByTomato = function () {
		self.hits++;
		if (self.hits >= self.maxHits) {
			// Wall takes a real damage only after 5 attacks
			self.lives--;
			self.hits = 0;
			// Flash wall to show it lost a life
			LK.effects.flashObject(self, 0xff0000, 400);
		} else {
			// Flash wall for a normal hit (not enough attacks yet)
			LK.effects.flashObject(self, 0xffffff, 200);
		}
		self.updateHealthText();
	};
	return self;
});
// Tomato Enemy
var Tomato = Container.expand(function () {
	var self = Container.call(this);
	var tomatoGfx = self.attachAsset('tomato', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Target to move towards (the player ball)
	self.target = null;
	self.speed = 7 + Math.random() * 3; // px per frame, randomize a bit
	self.update = function () {
		if (!self.target) return;
		var dx = self.target.x - self.x;
		var dy = self.target.y - self.y;
		var dist = Math.sqrt(dx * dx + dy * dy);
		if (dist > 0) {
			self.x += dx / dist * self.speed;
			self.y += dy / dist * self.speed;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x181818
});

/**** 
* Game Code
****/ 
// Sound for shooting
// Tomato enemy
// Bullet
// Ball (player)
// Game area: 2048x2732
// Center player ball
var player = new Ball();
player.x = 2048 / 2;
player.y = 2732 - 350;
game.addChild(player);
// Add stone wall(s) a short distance in front of the player
var stoneWall = new StoneWall();
stoneWall.x = player.x;
stoneWall.y = player.y - 180; // ~18cm ahead (assuming 10px ~ 1mm)
game.addChild(stoneWall);
// Score display
var score = 0;
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Bullets and tomatoes arrays
var bullets = [];
var tomatoes = [];
// Dragging
var dragNode = null;
// For shooting: track last tap position
var lastTapX = null;
var lastTapY = null;
// Store UI: 5 gun buttons at the bottom of the screen
var gunCount = 5;
var gunButtons = [];
var selectedGun = 0; // default gun
// Gun names (could be used for upgrades later)
var gunNames = ["Basic", "Spread", "Rapid", "Big", "Pierce"];
// Gun colors for button visuals
var gunColors = [0x3a9efd, 0x6cbb3c, 0xf7b32b, 0xd7263d, 0x7c3aed];
// Create gun buttons and add to GUI bottom
for (var i = 0; i < gunCount; i++) {
	var btn = new Container();
	// Button background
	var btnBg = LK.getAsset('bullet', {
		width: 180,
		height: 180,
		color: gunColors[i],
		anchorX: 0.5,
		anchorY: 0.5
	});
	btn.addChild(btnBg);
	// Button label
	var btnLabel = new Text2(gunNames[i], {
		size: 48,
		fill: "#fff"
	});
	btnLabel.anchor.set(0.5, 0.5);
	btnLabel.y = 50;
	btn.addChild(btnLabel);
	// Position buttons evenly along the bottom, avoiding bottom corners
	btn.x = 2048 / (gunCount + 1) * (i + 1);
	btn.y = 2732 - 120;
	// Store index for event
	btn.gunIndex = i;
	// Highlight selected gun
	btnBg.alpha = i === selectedGun ? 1 : 0.5;
	// Add to GUI
	LK.gui.bottom.addChild(btn);
	gunButtons.push(btn);
}
// (Arrow button code removed for walk-by-hold movement)
// Store gun selection handler
function handleGunButtonDown(x, y, obj) {
	// Find which button was pressed
	for (var i = 0; i < gunButtons.length; i++) {
		var btn = gunButtons[i];
		// Convert event to local button space
		var local = btn.toLocal({
			x: x,
			y: y
		});
		// Button is 180x180 centered
		if (local.x > -90 && local.x < 90 && local.y > -90 && local.y < 90) {
			selectedGun = btn.gunIndex;
			// Update button highlights
			for (var j = 0; j < gunButtons.length; j++) {
				gunButtons[j].children[0].alpha = j === selectedGun ? 1 : 0.5;
			}
			break;
		}
	}
}
// Add attack button at bottom left using LK.gui.bottomLeft for reliable placement
var attackBtn = new Container();
var attackBtnBg = LK.getAsset('ball', {
	width: 220,
	height: 220,
	color: 0xd7263d,
	anchorX: 0.5,
	anchorY: 0.5
});
attackBtn.addChild(attackBtnBg);
var attackBtnLabel = new Text2("Attack", {
	size: 60,
	fill: "#fff"
});
attackBtnLabel.anchor.set(0.5, 0.5);
attackBtn.addChild(attackBtnLabel);
// Place at bottom left, with margin so it's not flush to the edge
attackBtn.x = 140;
attackBtn.y = -140;
LK.gui.bottomLeft.addChild(attackBtn);
// Track attack button hold state
var attackBtnHeld = false;
var attackBtnShootCooldown = 0;
// Track where the gun is aiming (defaults up)
var gunAimX = player.x;
var gunAimY = player.y - 400;
// Attack button event
attackBtn.down = function (x, y, obj) {
	attackBtnHeld = true;
	// Shoot in the direction the gun is facing
	shootBullet(gunAimX, gunAimY);
	attackBtnShootCooldown = 8; // frames between shots
};
attackBtn.up = function (x, y, obj) {
	attackBtnHeld = false;
};
// Add event to GUI bottom for gun selection
LK.gui.bottom.down = function (x, y, obj) {
	// If attack button is pressed, don't select gun
	var local = attackBtn.toLocal({
		x: x,
		y: y
	});
	if (local.x > -110 && local.x < 110 && local.y > -110 && local.y < 110) {
		// handled by attackBtn.down
		return;
	}
	handleGunButtonDown(x, y, obj);
};
// Prevent elements in top left 100x100
// (player and GUI are well away from this area)
// Spawn tomato at random edge (but NOT from the bottom)
function spawnTomato() {
	var t = new Tomato();
	// Only pick from top, left, or right edges (no bottom, so never behind the wall)
	var edge = Math.floor(Math.random() * 3);
	var margin = 100;
	if (edge === 0) {
		// Top
		t.x = margin + Math.random() * (2048 - 2 * margin);
		t.y = -80;
	} else if (edge === 1) {
		// Left
		t.x = -80;
		t.y = margin + Math.random() * (stoneWall.y - 2 * margin);
	} else {
		// Right
		t.x = 2048 + 80;
		t.y = margin + Math.random() * (stoneWall.y - 2 * margin);
	}
	t.target = player;
	tomatoes.push(t);
	game.addChild(t);
}
// Initial tomato spawn
for (var i = 0; i < 2; i++) {
	spawnTomato();
}
// Tomato spawn timer
var tomatoTimer = LK.setInterval(function () {
	spawnTomato();
}, 1200);
// Handle dragging the player ball
function handleMove(x, y, obj) {
	// Player movement disabled: do not update player position
	// Always update gun aim to point at the current touch/move position
	// Only if not on attack button (so we don't aim while holding attack)
	var local = attackBtn.toLocal({
		x: x,
		y: y
	});
	if (!(local.x > -110 && local.x < 110 && local.y > -110 && local.y < 110)) {
		gunAimX = x;
		gunAimY = y;
		// Calculate angle from player to aim point
		var dx = gunAimX - player.x;
		var dy = gunAimY - player.y;
		var angle = Math.atan2(dy, dx);
		player.setGunAngle(angle);
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	// Player movement disabled: do not set dragNode
	// Update gun aim to this position (unless on attack button)
	var local = attackBtn.toLocal({
		x: x,
		y: y
	});
	if (!(local.x > -110 && local.x < 110 && local.y > -110 && local.y < 110)) {
		gunAimX = x;
		gunAimY = y;
		var dx = gunAimX - player.x;
		var dy = gunAimY - player.y;
		var angle = Math.atan2(dy, dx);
		player.setGunAngle(angle);
	}
};
game.up = function (x, y, obj) {
	// Player movement disabled: do not clear dragNode
};
// Shoot bullet from player towards (tx, ty)
function shootBullet(tx, ty) {
	// Calculate direction
	var dx = tx - player.x;
	var dy = ty - player.y;
	var dist = Math.sqrt(dx * dx + dy * dy);
	var dirX = dist === 0 ? 0 : dx / dist;
	var dirY = dist === 0 ? -1 : dy / dist;
	// Gun logic
	if (selectedGun === 0) {
		// Basic: single bullet
		var b = new Bullet();
		b.x = player.x;
		b.y = player.y;
		b.dx = dirX;
		b.dy = dirY;
		bullets.push(b);
		game.addChild(b);
	} else if (selectedGun === 1) {
		// Spread: 3 bullets, spread angle
		for (var i = -1; i <= 1; i++) {
			var angle = Math.atan2(dirY, dirX) + i * 0.18;
			var b = new Bullet();
			b.x = player.x;
			b.y = player.y;
			b.dx = Math.cos(angle);
			b.dy = Math.sin(angle);
			bullets.push(b);
			game.addChild(b);
		}
	} else if (selectedGun === 2) {
		// Rapid: 2 fast bullets
		for (var i = 0; i < 2; i++) {
			var b = new Bullet();
			b.x = player.x;
			b.y = player.y;
			b.dx = dirX;
			b.dy = dirY;
			b.speed = 60;
			bullets.push(b);
			game.addChild(b);
		}
	} else if (selectedGun === 3) {
		// Big: 1 slow, big bullet
		var b = new Bullet();
		b.x = player.x;
		b.y = player.y;
		b.dx = dirX;
		b.dy = dirY;
		b.speed = 25;
		// Make bullet bigger
		b.children[0].scale.x = 2;
		b.children[0].scale.y = 2;
		bullets.push(b);
		game.addChild(b);
	} else if (selectedGun === 4) {
		// Pierce: 1 bullet, mark as piercing
		var b = new Bullet();
		b.x = player.x;
		b.y = player.y;
		b.dx = dirX;
		b.dy = dirY;
		b.pierce = true;
		bullets.push(b);
		game.addChild(b);
	}
	LK.getSound('shoot').play();
}
// Main game update
game.update = function () {
	// Attack button hold-to-shoot logic
	if (attackBtnHeld) {
		if (attackBtnShootCooldown <= 0) {
			// Shoot in the direction the gun is facing
			shootBullet(gunAimX, gunAimY);
			attackBtnShootCooldown = 8; // frames between shots
		} else {
			attackBtnShootCooldown--;
		}
	} else {
		attackBtnShootCooldown = 0;
	}
	// Update bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var b = bullets[i];
		b.update();
		// Remove if off screen
		if (b.x < -60 || b.x > 2048 + 60 || b.y < -60 || b.y > 2732 + 60) {
			b.destroy();
			bullets.splice(i, 1);
			continue;
		}
	}
	// Update tomatoes
	for (var j = tomatoes.length - 1; j >= 0; j--) {
		var t = tomatoes[j];
		t.update();
		// Check collision with stone wall first
		if (t.intersects(stoneWall)) {
			// Smash tomato against wall: destroy tomato, damage wall, no game over unless wall is out of lives
			t.destroy();
			tomatoes.splice(j, 1);
			stoneWall.hitByTomato();
			// If wall is out of lives, destroy wall and game over
			if (stoneWall.lives <= 0) {
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
				return;
			}
			continue;
		}
		// Check collision with player
		if (t.intersects(player)) {
			// Flash screen, game over
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
		// Check collision with bullets
		for (var k = bullets.length - 1; k >= 0; k--) {
			var b = bullets[k];
			if (t.intersects(b)) {
				// Destroy tomato
				t.destroy();
				tomatoes.splice(j, 1);
				// If not piercing, destroy bullet
				if (!b.pierce) {
					b.destroy();
					bullets.splice(k, 1);
				}
				// Score up
				score += 1;
				LK.setScore(score);
				scoreTxt.setText(score);
				// Only allow one bullet to hit this tomato
				break;
			}
		}
	}
};
// Play music if you want, but not required for MVP
// Clean up on game over (handled by LK automatically)