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

/**** 
* Classes
****/ 
var Battlefield = Container.expand(function () {
	var self = Container.call(this);
	self.width = 2048;
	self.height = 1366;
	self.initialized = false;
	// Create background
	var bg = self.attachAsset('background', {
		anchorX: 0,
		anchorY: 0
	});
	self.projectiles = [];
	self.createProjectile = function (source, target, type) {
		var projectile = new Projectile(source, target, type);
		projectile.x = source.x;
		projectile.y = source.y;
		self.addChild(projectile);
		self.projectiles.push(projectile);
	};
	self.removeUnit = function (unit) {
		var index = units.indexOf(unit);
		if (index !== -1) {
			units.splice(index, 1);
		}
		// Check win condition
		self.checkWinCondition();
	};
	self.checkWinCondition = function () {
		var redTeamUnits = 0;
		var blueTeamUnits = 0;
		for (var i = 0; i < units.length; i++) {
			if (units[i].active) {
				if (units[i].team === 'red') {
					redTeamUnits++;
				} else {
					blueTeamUnits++;
				}
			}
		}
		if (self.initialized && (redTeamUnits === 0 || blueTeamUnits === 0)) {
			var winningTeam = redTeamUnits > 0 ? "Red" : "Blue";
			winText.setText(winningTeam + " Team Wins!");
			winText.visible = true;
			LK.getSound('victory').play();
			// Create reset button
			if (!resetButton) {
				resetButton = new ResetButton();
				resetButton.x = self.width / 2;
				resetButton.y = self.height / 2 + 100;
				game.addChild(resetButton);
			}
		}
	};
	self.update = function () {
		// Update all projectiles
		for (var i = self.projectiles.length - 1; i >= 0; i--) {
			self.projectiles[i].update();
			// Remove destroyed projectiles
			if (!self.projectiles[i].parent) {
				self.projectiles.splice(i, 1);
			}
		}
	};
	return self;
});
// Define factions and their respective units
var Bomber = Container.expand(function (team, x, y) {
	var self = Container.call(this, team, 'bomber', x, y);
	self.attackRange = 50;
	self.attackDamage = 100;
	self.moveSpeed = 1.0;
	self.special = "self-destructs on contact";
	self.update = function () {
		if (!self.active) {
			return;
		}
		// Move towards the target
		self.moveTowardsTarget();
		// Check for intersection with target
		if (self.target && self.intersects(self.target)) {
			self.selfDestruct();
		}
	};
	self.selfDestruct = function () {
		var damage = self.attackDamage;
		for (var i = 0; i < units.length; i++) {
			var unit = units[i];
			if (unit.active && unit.team !== self.team) {
				var dist = getDistance(self.x, self.y, unit.x, unit.y);
				if (dist < 100) {
					unit.takeDamage(damage, self);
				}
			}
		}
		self.die();
	};
	return self;
});
var FactionButton = Container.expand(function (team, faction, x, y) {
	var self = Container.call(this);
	self.team = team;
	self.faction = faction;
	self.x = x;
	self.y = y;
	// Create button appearance
	var buttonShape = self.attachAsset('button' + team.charAt(0).toUpperCase() + team.slice(1), {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 150,
		height: 80
	});
	// Add faction name text
	var nameText = new Text2(faction.charAt(0).toUpperCase() + faction.slice(1), {
		size: 24,
		fill: 0xFFFFFF
	});
	nameText.anchor.set(0.5, 0.5);
	nameText.y = 30;
	self.addChild(nameText);
	self.down = function (x, y, obj) {
		// When button is pressed, create unit buttons for the faction
		var xOffset = 120;
		for (var i = 0; i < factions[faction].length; i++) {
			var unitButton = new UnitButton(self.team, factions[faction][i], 2048 - xOffset, self.y);
			game.addChild(unitButton);
			xOffset += 180;
		}
		// Highlight button
		LK.effects.flashObject(self, 0xffffff, 300);
	};
	return self;
});
var GatlingGun = Container.expand(function (team, x, y) {
	var self = Container.call(this, team, 'gatlingGun', x, y);
	self.attackRange = 300;
	self.attackDamage = 5;
	self.moveSpeed = 0.5;
	self.special = "fast firing, inaccurate";
	self.update = function () {
		if (!self.active) {
			return;
		}
		// Move towards the target
		self.moveTowardsTarget();
		// Shoot rapidly if cooldown is ready
		if (self.attackCooldown === 0) {
			self.shootRapidly();
		}
	};
	self.shootRapidly = function () {
		var target = self.findNearestEnemy();
		if (target) {
			battlefield.createProjectile(self, target, 'bullet');
			self.attackCooldown = 10;
		}
	};
	return self;
});
var Projectile = Container.expand(function (source, target, type) {
	var self = Container.call(this);
	self.source = source;
	self.target = target;
	self.speed = type === 'arrow' ? 12 : 6;
	self.damage = source.attackDamage;
	var projectileAsset = self.attachAsset(type, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		if (!self.target || !self.target.active) {
			self.destroy();
			return;
		}
		// Calculate direction to target
		var dx = self.target.x - self.x;
		var dy = self.target.y - self.y;
		var dist = Math.sqrt(dx * dx + dy * dy);
		// Rotate projectile to face target
		self.rotation = Math.atan2(dy, dx);
		// Move towards target
		if (dist > self.speed) {
			self.x += dx / dist * self.speed;
			self.y += dy / dist * self.speed;
		} else {
			// Hit target
			if (type === 'arrow') {
				if (self.target.type === 'mirrorShield' && Math.random() < 0.5) {
					// 50% chance to reflect
					// Reflect the projectile back to the source
					self.target = self.source;
					self.source = null; // No longer has a source
				} else {
					self.target.takeDamage(self.damage, self.source);
				}
			}
			self.destroy();
		}
	};
	return self;
});
var ResetButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonShape = self.attachAsset('button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var buttonText = new Text2("Reset Battle", {
		size: 40,
		fill: 0xFFFFFF
	});
	buttonText.anchor.set(0.5, 0.5);
	self.addChild(buttonText);
	self.down = function (x, y, obj) {
		// Reset the battle
		resetBattle();
	};
	return self;
});
var StartButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonShape = self.attachAsset('button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var buttonText = new Text2("Start Battle!", {
		size: 40,
		fill: 0xFFFFFF
	});
	buttonText.anchor.set(0.5, 0.5);
	self.addChild(buttonText);
	self.down = function (x, y, obj) {
		// Start the battle (mark battlefield as initialized)
		if (units.length > 0) {
			battlefield.initialized = true;
			self.visible = false;
			instructions.visible = false;
			LK.playMusic('battleMusic');
		}
	};
	return self;
});
var Unit = Container.expand(function (team, type, x, y) {
	var self = Container.call(this);
	self.team = team;
	self.type = type;
	self.x = x;
	self.y = y;
	self.active = true;
	self.target = null;
	self.attackCooldown = 0;
	self.attackRange = 0;
	self.attackDamage = 0;
	self.moveSpeed = 0;
	self.health = 100;
	self.maxHealth = 100;
	self.special = "";
	// Default properties based on unit type
	switch (type) {
		case 'wobbler':
			self.attackRange = 50;
			self.attackDamage = 15;
			self.moveSpeed = 1.5;
			self.attackCooldowsn = 40;
			break;
		case 'farmer':
			self.attackRange = 70;
			self.attackDamage = 25; // High first hit
			self.moveSpeed = 1.2;
			self.attackCooldown = 60;
			self.special = "extra damage on first hit";
			break;
		case 'archer':
			self.attackRange = 400;
			self.attackDamage = 12;
			self.moveSpeed = 1.0;
			self.attackCooldown = 80;
			self.special = "ranged";
			break;
		case 'shield':
			self.attackRange = 60;
			self.attackDamage = 8;
			self.moveSpeed = 0.8;
			self.health = 150;
			self.maxHealth = 150;
			self.attackCooldown = 50;
			self.special = "resistant to arrow";
			break;
		case 'sword':
			self.attackRange = 80;
			self.attackDamage = 20;
			self.moveSpeed = 1.3;
			self.attackCooldown = 45;
			break;
		case 'wizard':
			self.attackRange = 300;
			self.attackDamage = 10;
			self.moveSpeed = 0.9;
			self.attackCooldown = 100;
			self.special = "splash damage";
			break;
		case 'berserker':
			self.attackRange = 70;
			self.attackDamage = 20;
			self.moveSpeed = 1.5;
			self.attackCooldown = 50;
			self.special = "double damage at half health";
			break;
		case 'spearman':
			self.attackRange = 100;
			self.attackDamage = 18;
			self.moveSpeed = 1.2;
			self.attackCooldown = 60;
			self.special = "chance to throw spear";
			break;
		case 'mirrorShield':
			self.attackRange = 60;
			self.attackDamage = 5;
			self.moveSpeed = 0.8;
			self.health = 120;
			self.maxHealth = 120;
			self.attackCooldown = 50;
			self.special = "chance to reflect projectiles";
			break;
		case 'king':
			self.attackRange = 80;
			self.attackDamage = 50;
			self.moveSpeed = 0.5;
			self.health = 300;
			self.maxHealth = 300;
			self.attackCooldown = 100;
			self.special = "massive damage and health";
			break;
		case 'crossbowMan':
			self.attackRange = 400;
			self.attackDamage = 15;
			self.moveSpeed = 1.0;
			self.attackCooldown = 60;
			self.special = "fast firing, chance for critical damage";
			break;
		case 'sniper':
			self.attackRange = Infinity;
			self.attackDamage = 20;
			self.moveSpeed = 1.0;
			self.attackCooldown = 100;
			self.special = "ranged";
			break;
		case 'hammer':
			self.attackRange = 50;
			self.attackDamage = 30;
			self.moveSpeed = 1.0;
			self.attackCooldown = 70;
			self.special = "aoe";
			break;
		case 'retarius':
			self.attackRange = 100;
			self.attackDamage = 18;
			self.moveSpeed = 1.2;
			self.attackCooldown = 60;
			self.special = "stun every 3 attacks";
			break;
	}
	// Create unit appearance
	var unitShape = self.attachAsset(type, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Add team color indicator on top
	var teamIndicator = self.attachAsset('character' + team.charAt(0).toUpperCase() + team.slice(1), {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 20,
		height: 20
	});
	teamIndicator.y = -40;
	// Add health bar
	self.healthBarBg = self.attachAsset('healthBarBackground', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.healthBarBg.y = 40;
	self.healthBarFill = self.attachAsset('healthBar', {
		anchorX: 0,
		// Left anchored for easy scaling
		anchorY: 0.5
	});
	self.healthBarFill.x = -35; // Half the width
	self.healthBarFill.y = 40;
	self.updateHealthBar = function () {
		var healthPercent = self.health / self.maxHealth;
		self.healthBarFill.scaleX = healthPercent;
	};
	self.takeDamage = function (amount, attacker) {
		if (!self.active) {
			return;
		}
		// Shield units take less damage from archers
		if (self.type === 'shield' && attacker && attacker.type === 'archer') {
			amount = Math.floor(amount * 0.5);
		}
		// Wizards do extra damage to shields
		if (attacker && attacker.type === 'wizard' && self.type === 'shield') {
			amount = Math.floor(amount * 1.5);
		}
		self.health -= amount;
		self.updateHealthBar();
		// Flash unit when hit
		LK.effects.flashObject(self, 0xff0000, 300);
		if (self.health <= 0) {
			self.die();
		}
	};
	self.die = function () {
		self.active = false;
		LK.getSound('death').play();
		// Fade out and remove from battlefield
		tween(self, {
			alpha: 0
		}, {
			duration: 500,
			onFinish: function onFinish() {
				battlefield.removeUnit(self);
				self.destroy();
			}
		});
	};
	self.findNearestEnemy = function () {
		var closestDist = Infinity;
		var closestEnemy = null;
		for (var i = 0; i < units.length; i++) {
			var unit = units[i];
			if (unit.active && unit.team !== self.team) {
				var dist = getDistance(self.x, self.y, unit.x, unit.y);
				if (dist < closestDist) {
					closestDist = dist;
					closestEnemy = unit;
				}
			}
		}
		return closestEnemy;
	};
	self.moveTowardsTarget = function () {
		if (!self.target || !self.target.active) {
			if (self.type === 'spearman' && Math.random() < 0.3) {
				// 30% chance to throw spear
				self.target = self.findNearestEnemy();
				if (self.target) {
					battlefield.createProjectile(self, self.target, 'spear');
					self.attackCooldown = 60; // Reset cooldown after throwing spear
					return;
				}
			}
			self.target = self.findNearestEnemy();
			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 in attack range, stop moving
		if (dist <= self.attackRange) {
			return;
		}
		// Normalize direction and move
		var moveX = dx / dist * self.moveSpeed;
		var moveY = dy / dist * self.moveSpeed;
		self.x += moveX;
		self.y += moveY;
	};
	self.attack = function () {
		// Track number of attacks for Retarius
		if (self.type === 'retarius') {
			if (!self.attackCount) {
				self.attackCount = 0;
			}
			self.attackCount++;
			// Stun effect every 3 attacks
			if (self.attackCount % 3 === 0 && self.target) {
				self.target.stunned = true;
				LK.setTimeout(function () {
					if (self.target) {
						self.target.stunned = false;
					}
				}, 2000); // Stun duration of 2 seconds
			}
		}
		if (!self.target || !self.target.active) {
			self.target = self.findNearestEnemy();
			if (!self.target) {
				return;
			}
		}
		var dist = getDistance(self.x, self.y, self.target.x, self.target.y);
		if (dist <= self.attackRange) {
			// Reset attack cooldown
			self.attackCooldown = self.type === 'wobbler' ? 40 : self.type === 'farmer' ? 60 : self.type === 'archer' ? 80 : self.type === 'shield' ? 50 : self.type === 'sword' ? 45 : 100;
			// Handle special attacks
			if (self.special === "ranged") {
				if (self.type === 'sniper') {
					// Create bullet projectile for sniper
					battlefield.createProjectile(self, self.target, 'bullet');
					LK.getSound('shoot').play();
				} else {
					// Create arrow projectile
					battlefield.createProjectile(self, self.target, 'arrow');
					LK.getSound('arrow').play();
				}
			} else if (self.special === "aoe") {
				// Wizard AOE attack
				battlefield.createProjectile(self, self.target, 'spell');
				LK.getSound('spell').play();
				// Damage the target and nearby enemies
				var damage = self.attackDamage;
				for (var i = 0; i < units.length; i++) {
					var unit = units[i];
					if (unit.active && unit.team !== self.team) {
						var aoeDistance = getDistance(self.target.x, self.target.y, unit.x, unit.y);
						if (aoeDistance < 150) {
							// Damage falls off with distance
							var aoeDamage = Math.floor(damage * (1 - aoeDistance / 150));
							if (aoeDamage > 0) {
								unit.takeDamage(aoeDamage, self);
							}
						}
					}
				}
			} else {
				// Melee attack
				LK.getSound('attack').play();
				var damage = self.attackDamage;
				// Double damage if Berserker is enraged (health is at or below half)
				if (self.type === 'berserker' && self.health <= self.maxHealth / 2) {
					damage *= 2;
					self.moveSpeed = 2.0; // Increase move speed when enraged
				}
				// Implement critical hit chance for Crossbowman
				if (self.type === 'crossbowMan' && Math.random() < 0.2) {
					// 20% chance for critical hit
					damage *= 2; // Double damage for critical hit
				}
				// First strike bonus for farmers
				if (self.special === "firstStrike" && !self.hasAttacked) {
					damage *= 1.5; // 50% bonus on first hit
					self.hasAttacked = true;
				}
				self.target.takeDamage(damage, self);
			}
		}
	};
	self.showStats = function () {
		var specialAbility = self.special ? self.special : "None";
		if (self.type === 'bomber') {
			specialAbility = "self-destructs on contact";
		} else if (self.type === 'wheelbarrow') {
			specialAbility = "fast and uncontrollable, shoots apples";
		} else if (self.type === 'gatlingGun') {
			specialAbility = "fast firing, inaccurate";
		}
		var statsText = "Type: " + self.type.charAt(0).toUpperCase() + self.type.slice(1) + "\n" + "Health: " + self.health + "/" + self.maxHealth + "\n" + "Attack Damage: " + self.attackDamage + "\n" + "Attack Range: " + self.attackRange + "\n" + "Special: " + specialAbility;
		var statsDisplay = new Text2(statsText, {
			size: 30,
			fill: 0xFFFFFF
		});
		statsDisplay.anchor.set(0.5, 0.5);
		statsDisplay.x = self.x;
		statsDisplay.y = self.y - 100;
		game.addChild(statsDisplay);
		// Remove stats display after 3 seconds
		LK.setTimeout(function () {
			if (statsDisplay.parent) {
				statsDisplay.destroy();
			}
		}, 3000);
	};
	self.down = function (x, y, obj) {
		if (self.lastTap && Date.now() - self.lastTap < 300) {
			self.showStats();
		}
		self.lastTap = Date.now();
	};
	self.update = function () {
		if (!self.active || self.stunned) {
			return;
		}
		// Update health bar position to follow unit
		self.updateHealthBar();
		// Decrease attack cooldown
		if (self.attackCooldown > 0) {
			self.attackCooldown--;
		}
		// Find and move towards target
		self.moveTowardsTarget();
		// Attack if cooldown is ready
		if (self.attackCooldown === 0) {
			self.attack();
		}
	};
	return self;
});
var UnitButton = Container.expand(function (team, type, x, y) {
	var self = Container.call(this);
	self.team = team;
	self.type = type;
	self.x = x;
	self.y = y;
	// Create button appearance
	var buttonShape = self.attachAsset('button' + team.charAt(0).toUpperCase() + team.slice(1), {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 150,
		height: 80
	});
	// Add unit icon
	var unitIcon = self.attachAsset(type, {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.8,
		scaleY: 0.8
	});
	// Add unit name text
	var nameText = new Text2(type.charAt(0).toUpperCase() + type.slice(1), {
		size: 24,
		fill: 0xFFFFFF
	});
	nameText.anchor.set(0.5, 0.5);
	nameText.y = 30;
	self.addChild(nameText);
	self.down = function (x, y, obj) {
		// When button is pressed, start dragging a new unit
		var unit = new Unit(self.team, self.type, x, y);
		// Mark as dragging unit
		draggingUnit = unit;
		game.addChild(unit);
		// Highlight button
		LK.effects.flashObject(self, 0xffffff, 300);
	};
	return self;
});
var Wheelbarrow = Container.expand(function (team, x, y) {
	var self = Container.call(this, team, 'wheelbarrow', x, y);
	self.attackRange = 30;
	self.attackDamage = 10;
	self.moveSpeed = 2.5;
	self.special = "fast and uncontrollable, shoots apples";
	self.update = function () {
		if (!self.active) {
			return;
		}
		// Move randomly
		self.moveRandomly();
		// Shoot apple if cooldown is ready
		if (self.attackCooldown === 0) {
			self.shootApple();
		}
	};
	self.moveRandomly = function () {
		self.x += (Math.random() - 0.5) * self.moveSpeed;
		self.y += (Math.random() - 0.5) * self.moveSpeed;
	};
	self.shootApple = function () {
		var target = self.findNearestEnemy();
		if (target) {
			battlefield.createProjectile(self, target, 'apple');
			self.attackCooldown = 30;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
function _typeof(o) {
	"@babel/helpers - typeof";
	return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
		return typeof o;
	} : function (o) {
		return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
	}, _typeof(o);
}
function _defineProperty(e, r, t) {
	return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, {
		value: t,
		enumerable: !0,
		configurable: !0,
		writable: !0
	}) : e[r] = t, e;
}
function _toPropertyKey(t) {
	var i = _toPrimitive(t, "string");
	return "symbol" == _typeof(i) ? i : i + "";
}
function _toPrimitive(t, r) {
	if ("object" != _typeof(t) || !t) {
		return t;
	}
	var e = t[Symbol.toPrimitive];
	if (void 0 !== e) {
		var i = e.call(t, r || "default");
		if ("object" != _typeof(i)) {
			return i;
		}
		throw new TypeError("@@toPrimitive must return a primitive value.");
	}
	return ("string" === r ? String : Number)(t);
}
var factions = _defineProperty(_defineProperty({
	farm: ['wobbler', 'farmer', 'wheelbarrow'],
	medieval: ['sword', 'archer', 'crossbowMan', 'king', 'shield'],
	magic: ['mirrorShield', 'wizard', 'bomber'],
	vikings: ['berserker'],
	rome: ['spearman', 'retarius']
}, "vikings", ['berserker', 'hammer']), "modern", ['sniper', 'gatlingGun']);
// Game state variables
var units = [];
var draggingUnit = null;
var battlefield = null;
var resetButton = null;
// Create the battlefield
battlefield = new Battlefield();
battlefield.x = 0;
battlefield.y = 0;
game.addChild(battlefield);
// Create faction buttons for red team
var redFactionButtons = [];
var factionNames = Object.keys(factions);
var factionYOffset = 80;
for (var i = 0; i < factionNames.length; i++) {
	var factionButton = new FactionButton('red', factionNames[i], 2048 - 300, factionYOffset);
	factionButton.x = 2048 - 300; // Adjusted position even further to the left
	factionButton.y = factionYOffset;
	redFactionButtons.push(factionButton);
	game.addChild(factionButton);
	factionYOffset += 100;
}
// Create faction buttons for blue team
var blueFactionButtons = [];
factionYOffset = 2732 - 80;
for (var i = 0; i < factionNames.length; i++) {
	var factionButton = new FactionButton('blue', factionNames[i], 60, factionYOffset);
	blueFactionButtons.push(factionButton);
	game.addChild(factionButton);
	factionYOffset -= 100;
}
// Start button
var startButton = new StartButton();
startButton.x = 2048 / 2;
startButton.y = 2732 / 2;
game.addChild(startButton);
// Win text
var winText = new Text2("", {
	size: 80,
	fill: 0xFFFF00
});
winText.anchor.set(0.5, 0.5);
winText.x = 2048 / 2;
winText.y = 2732 / 2 - 100;
winText.visible = false;
game.addChild(winText);
// Instructions text
var instructions = new Text2("Place units on the battlefield\nand press Start Battle!", {
	size: 40,
	fill: 0xFFFFFF
});
instructions.anchor.set(0.5, 0.5);
instructions.x = 2048 / 2;
instructions.y = 2732 / 2 - 100;
game.addChild(instructions);
// Helper function to calculate distance between two points
function getDistance(x1, y1, x2, y2) {
	var dx = x2 - x1;
	var dy = y2 - y1;
	return Math.sqrt(dx * dx + dy * dy);
}
// Reset the battle
function resetBattle() {
	// Remove all units
	for (var i = units.length - 1; i >= 0; i--) {
		if (units[i].parent) {
			units[i].destroy();
		}
	}
	units = [];
	// Clear projectiles
	for (var i = battlefield.projectiles.length - 1; i >= 0; i--) {
		if (battlefield.projectiles[i].parent) {
			battlefield.projectiles[i].destroy();
		}
	}
	battlefield.projectiles = [];
	// Reset battlefield state
	battlefield.initialized = false;
	// Show start button and instructions again
	startButton.visible = true;
	instructions.visible = true;
	// Hide win text and reset button
	winText.visible = false;
	if (resetButton && resetButton.parent) {
		resetButton.destroy();
		resetButton = null;
	}
	// Stop music
	LK.stopMusic();
}
// Handle dragging
game.move = function (x, y, obj) {
	if (draggingUnit) {
		draggingUnit.x = x;
		draggingUnit.y = y;
	}
};
game.up = function (x, y, obj) {
	if (draggingUnit) {
		// Check if unit is placed on the battlefield (not on buttons)
		var validPlacement = y > 150 && y < 2732 - 150;
		if (validPlacement) {
			// Add to units array
			units.push(draggingUnit);
		} else {
			// Not valid placement, destroy the unit
			draggingUnit.destroy();
		}
		draggingUnit = null;
	}
};
// Game update loop
game.update = function () {
	// Update all units if battle has started
	if (battlefield.initialized) {
		for (var i = 0; i < units.length; i++) {
			if (units[i].active) {
				units[i].update();
			}
		}
	}
	// Update projectiles
	battlefield.update();
};