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

/**** 
* Classes
****/ 
// --- Arena class ---
// Provides a background and groundY property for fighter placement
var Arena = Container.expand(function () {
	var self = Container.call(this);
	// Add arena background image, anchored at top-left
	var bg = self.attachAsset('arena_bg', {
		anchorX: 0,
		anchorY: 0,
		x: 0,
		y: 0
	});
	// Set groundY to a reasonable value for fighter placement
	// Place ground near the bottom of the visible area, but above the very bottom
	self.groundY = 2048 + 300; // 2048 is the base height, +300 for a bit above the bottom
	return self;
});
// --- Attack class ---
// Represents a regular or special attack hitbox, with owner and damage
var Attack = Container.expand(function () {
	var self = Container.call(this);
	// Arguments: owner (Fighter), isSpecial (bool)
	self.owner = arguments[0] || null;
	self.isSpecial = !!arguments[1];
	self.hit = false;
	self.destroyed = false;
	// Damage values
	self.damage = self.isSpecial ? 24 : 8;
	// Visual
	var assetId = self.isSpecial ? 'special_attack' : 'attack';
	var sprite = self.attachAsset(assetId, {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 0,
		y: 0
	});
	// Set size for hitbox (use asset size)
	self.width = sprite.width;
	self.height = sprite.height;
	// Set owner after creation if needed
	self.setOwner = function (fighter) {
		self.owner = fighter;
	};
	// Update: attacks last for a short time, then destroy
	self.lifetime = self.isSpecial ? 30 : 18; // special lasts longer
	self.update = function () {
		if (self.destroyed) return;
		self.lifetime--;
		if (self.lifetime <= 0) {
			self.destroy();
		}
	};
	self.destroy = function () {
		if (self.destroyed) return;
		self.destroyed = true;
		if (self.parent && self.parent.removeChild) {
			self.parent.removeChild(self);
		}
	};
	return self;
});
// --- Fighter class ---
// Handles player and AI fighter logic, health, attacks, movement, and health bar
var Fighter = Container.expand(function () {
	var self = Container.call(this);
	// --- Properties ---
	self.maxHealth = 100;
	self.health = self.maxHealth;
	self.moveSpeed = 18;
	self.jumpStrength = 60;
	self.gravity = 6;
	self.isJumping = false;
	self.isAttacking = false;
	self.isSpecialReady = true;
	self.specialCooldown = 360; // 6 seconds at 60fps
	self.specialTimer = 0;
	self.immobile = false;
	self.isFacingRight = true;
	self.attackCooldown = 72; // 1.2 seconds at 60fps
	self.attackTimer = 0;
	self.lastJumpPressed = false;
	// --- Visuals ---
	var sprite = self.attachAsset('fighter', {
		anchorX: 0.5,
		anchorY: 1.0,
		x: 0,
		y: 0
	});
	// Health bar container
	self.healthBar = new Container();
	// Health bar outline (drawn behind the background)
	var healthBarOutline = new Container();
	var outlineThickness = 6;
	var outlineW = 300 + outlineThickness * 2;
	var outlineH = 50 + outlineThickness * 2;
	var outlineRect = LK.getAsset('healthbar_bg', {
		anchorX: 0,
		anchorY: 0.5,
		x: -outlineThickness,
		y: 0,
		width: outlineW,
		height: outlineH,
		color: 0xffffff // white outline
	});
	healthBarOutline.addChild(outlineRect);
	self.healthBar.addChild(healthBarOutline);
	// Health bar background
	var healthBarBg = LK.getAsset('healthbar_bg', {
		anchorX: 0,
		anchorY: 0.5,
		x: 0,
		y: 0
	});
	self.healthBar.addChild(healthBarBg);
	// Health bar foreground
	var healthBarFg = LK.getAsset('healthbar_fg', {
		anchorX: 0,
		anchorY: 0.5,
		x: 0,
		y: 0
	});
	self.healthBar.addChild(healthBarFg);
	self.healthBar.width = 300;
	self.healthBar.height = 50;
	self.healthBarFg = healthBarFg;
	self.updateHealthBar = function () {
		var pct = Math.max(0, self.health / self.maxHealth);
		self.healthBarFg.width = 300 * pct;
	};
	self.updateHealthBar();
	// --- Methods ---
	self.setFacing = function (right) {
		self.isFacingRight = right;
		sprite.scaleX = right ? 1 : -1;
	};
	self.jump = function () {
		if (!self.isJumping && !self.immobile) {
			self.isJumping = true;
			self.vy = -self.jumpStrength;
		}
	};
	self.attack = function () {
		if (self.isAttacking || self.immobile || self.attackTimer > 0) return;
		self.isAttacking = true;
		self.attackTimer = self.attackCooldown;
		// Create attack object
		var atk = new Attack(self, false);
		atk.x = self.x + (self.isFacingRight ? 120 : -120);
		atk.y = self.y - 200;
		attacks.push(atk);
		game.addChild(atk);
		// End attack after short delay
		LK.setTimeout(function () {
			self.isAttacking = false;
		}, 300);
	};
	self.special = function () {
		if (!self.isSpecialReady || self.immobile) return;
		self.isSpecialReady = false;
		self.specialTimer = self.specialCooldown;
		// Create special attack object
		var atk = new Attack(self, true);
		atk.x = self.x + (self.isFacingRight ? 180 : -180);
		atk.y = self.y - 200;
		attacks.push(atk);
		game.addChild(atk);
	};
	self.takeDamage = function (amount, dir, knockback) {
		if (self.immobile) return;
		self.health -= amount;
		self.updateHealthBar();
		// Knockback
		self.x += (dir || 1) * (knockback || 32);
		// Clamp to arena
		self.x = Math.max(120, Math.min(2048 - 120, self.x));
	};
	self.update = function () {
		// Attack cooldown
		if (self.attackTimer > 0) {
			self.attackTimer--;
		}
		// Special cooldown
		if (!self.isSpecialReady) {
			if (self.specialTimer > 0) {
				self.specialTimer--;
			}
			if (self.specialTimer <= 0) {
				self.isSpecialReady = true;
			}
		}
		// Jumping physics
		if (self.isJumping) {
			if (typeof self.vy === "undefined") self.vy = 0;
			self.y += self.vy;
			self.vy += self.gravity;
			// Land on ground
			if (self.y >= arena.groundY) {
				self.y = arena.groundY;
				self.isJumping = false;
				self.vy = 0;
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// --- Arena setup ---
//Note game dimensions are 2048x2732
//Minimalistic tween library which should be used for animations over time, including tinting / colouring an object, scaling, rotating, or changing any game object property.
var arena = new Arena();
arena.x = 0;
arena.y = 0;
game.addChild(arena);
// --- Fixed ground platform (visual) ---
var groundHeight = 60;
var groundTileWidth = LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 0
}).width;
var groundY = arena.groundY - 100; // Move ground even further down by reducing the offset (was -300)
var groundTiles = [];
var numGroundTiles = Math.ceil(2048 / groundTileWidth); // Only enough to fill the screen
for (var i = 0; i < numGroundTiles; i++) {
	var groundTile = LK.getAsset('ground', {
		anchorX: 0,
		anchorY: 0,
		x: i * groundTileWidth,
		y: groundY
	});
	game.addChild(groundTile);
	groundTiles.push(groundTile);
}
// No infinite scrolling, ground is fixed and does not move
// --- Fighters ---
var fighter1 = new Fighter();
fighter1.lastJumpPressed = false;
fighter1.lastHitTime = -9999; // Track last time this fighter hit the other
fighter1.comboCount = 0; // Current combo count
var fighter2 = new Fighter();
fighter2.lastHitTime = -9999;
fighter2.comboCount = 0;
// Place fighters on opposite sides
fighter1.x = 600;
fighter1.y = arena.groundY;
fighter1.setFacing(true);
fighter2.x = 2048 - 600;
fighter2.y = arena.groundY;
fighter2.setFacing(false);
game.addChild(fighter1);
game.addChild(fighter2);
// --- Health bar GUI ---
// Removed number healthbars (Text2 healthBar1 and healthBar2)
// Move the box healthbars (fighter healthBar containers) to a more visible, symmetric place below the timer at the top center
// Remove from fighter containers and add to GUI, position symmetrically below timer
fighter1.removeChild(fighter1.healthBar);
fighter2.removeChild(fighter2.healthBar);
// Place both healthbars below the timer, offset horizontally from center
fighter1.healthBar.x = -550;
fighter1.healthBar.y = 170;
fighter2.healthBar.x = 250;
fighter2.healthBar.y = 170;
LK.gui.top.addChild(fighter1.healthBar);
LK.gui.top.addChild(fighter2.healthBar);
// --- Combo counters under health bars ---
var comboText1 = new Text2('Combo: 0', {
	size: 48,
	fill: 0xFF0000,
	stroke: 0xffffff,
	strokeThickness: 8
});
comboText1.anchor.set(0.5, 0);
comboText1.x = fighter1.healthBar.x + 150; // center under health bar (300px wide)
comboText1.y = fighter1.healthBar.y + 60; // just below health bar
var comboText2 = new Text2('Combo: 0', {
	size: 48,
	fill: 0xFF0000,
	stroke: 0xffffff,
	strokeThickness: 8
});
comboText2.anchor.set(0.5, 0);
comboText2.x = fighter2.healthBar.x + 150;
comboText2.y = fighter2.healthBar.y + 60;
LK.gui.top.addChild(comboText1);
LK.gui.top.addChild(comboText2);
// --- Round and timer ---
var round = 1;
var maxRounds = 3;
var wins1 = 0;
var wins2 = 0;
var roundTime = 60 * 30; // 30 seconds at 60fps
var roundTimer = roundTime;
var timerText = new Text2('30', {
	size: 80,
	fill: "#fff"
});
timerText.anchor.set(0.5, 0);
LK.gui.top.addChild(timerText);
// --- Touch controls (mobile-friendly) ---
var leftPressed = false,
	rightPressed = false,
	atkPressed = false,
	jumpPressed = false,
	spcPressed = false,
	throwPressed = false;
// Special attack cooldown overlay for button
var spcCooldownOverlay = LK.getAsset('healthbar_bg', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 180,
	height: 180,
	color: 0x000000
});
spcCooldownOverlay.alpha = 0.5;
spcCooldownOverlay.visible = false;
spcCooldownOverlay.x = 2048 - 350;
spcCooldownOverlay.y = 2450;
game.addChild(spcCooldownOverlay);
var spcCooldownText = new Text2('3', {
	size: 90,
	fill: "#fff"
});
spcCooldownText.anchor.set(0.5, 0.5);
spcCooldownText.x = 2048 - 350;
spcCooldownText.y = 2450;
spcCooldownText.visible = false;
game.addChild(spcCooldownText);
// Special attack cooldown counter above the special attack button
var spcCooldownCounter = new Text2('', {
	size: 60,
	fill: "#fff"
});
spcCooldownCounter.anchor.set(0.5, 1.0);
// Place above the special button (btnSpc)
spcCooldownCounter.x = 2048 - 350;
spcCooldownCounter.y = 2450 - 120;
spcCooldownCounter.visible = false;
game.addChild(spcCooldownCounter);
// Control buttons (simple rectangles for now)
var btnLeft = LK.getAsset('btn_left', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 200,
	y: 2600,
	scaleX: 1.8,
	scaleY: 1.8
});
var btnRight = LK.getAsset('btn_right', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 500,
	y: 2600,
	scaleX: 1.8,
	scaleY: 1.8
});
var btnAtk = LK.getAsset('btn_atk', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 - 500,
	y: 2600,
	scaleX: 1.8,
	scaleY: 1.8
});
var btnJump = LK.getAsset('btn_jump', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 - 200,
	y: 2600,
	scaleX: 1.8,
	scaleY: 1.8
});
var btnSpc = LK.getAsset('btn_spc', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 - 350,
	y: 2450,
	scaleX: 1.8,
	scaleY: 1.8
});
// Add throw button (use unique btn_throw asset, place visually above the jump button)
var btnThrow = LK.getAsset('btn_throw', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 - 200,
	// Move throw button slightly further up above the jump button (offset y by -220px)
	y: 2600 - 220,
	scaleX: 1.8,
	scaleY: 1.8
});
game.addChild(btnLeft);
game.addChild(btnRight);
game.addChild(btnAtk);
game.addChild(btnJump);
game.addChild(btnSpc);
game.addChild(btnThrow);
// Button event helpers
btnLeft.down = function () {
	leftPressed = true;
};
btnLeft.up = function () {
	leftPressed = false;
};
btnRight.down = function () {
	rightPressed = true;
};
btnRight.up = function () {
	rightPressed = false;
};
btnAtk.down = function () {
	atkPressed = true;
};
btnAtk.up = function () {
	atkPressed = false;
};
btnJump.down = function () {
	jumpPressed = true;
};
btnJump.up = function () {
	jumpPressed = false;
};
btnSpc.down = function () {
	spcPressed = true;
};
btnSpc.up = function () {
	spcPressed = false;
};
btnThrow.down = function () {
	throwPressed = true;
};
btnThrow.up = function () {
	throwPressed = false;
};
// --- Attacks array ---
var attacks = [];
// --- Game update loop ---
game.update = function () {
	// --- Timer ---
	if (roundTimer > 0) {
		roundTimer--;
		timerText.setText(Math.ceil(roundTimer / 60));
	}
	// --- Ground is fixed, no update needed ---
	// --- Player 1 controls (left side) ---
	if (!fighter1.immobile) {
		if (leftPressed) {
			fighter1.x = Math.max(120, fighter1.x - fighter1.moveSpeed);
			fighter1.setFacing(false);
		}
		if (rightPressed) {
			fighter1.x = Math.min(2048 - 120, fighter1.x + fighter1.moveSpeed);
			fighter1.setFacing(true);
		}
		// Only trigger jump on the frame the button is pressed (rising edge)
		if (jumpPressed && !fighter1.lastJumpPressed) {
			fighter1.jump();
		}
		if (atkPressed) {
			fighter1.attack();
		}
		if (throwPressed && typeof fighter1.throwObject === "function") {
			fighter1.throwObject();
		}
		if (spcPressed) {
			if (fighter1.isSpecialReady) {
				fighter1.special();
			}
		}
	}
	fighter1.lastJumpPressed = jumpPressed;
	// --- Special attack cooldown overlay update ---
	if (!fighter1.isSpecialReady) {
		spcCooldownOverlay.visible = true;
		spcCooldownText.visible = true;
		var secondsLeft = Math.ceil(fighter1.specialTimer / 60);
		spcCooldownText.setText(secondsLeft);
		// Show and update the counter above the special button
		spcCooldownCounter.visible = true;
		spcCooldownCounter.setText(secondsLeft + "s");
	} else {
		spcCooldownOverlay.visible = false;
		spcCooldownText.visible = false;
		spcCooldownCounter.visible = false;
	}
	// --- AI for fighter2 (simple: move toward player, attack if close) ---
	if (!fighter2.immobile) {
		var dx = fighter1.x - fighter2.x;
		if (Math.abs(dx) > 180) {
			if (dx < 0) {
				fighter2.x -= fighter2.moveSpeed * 0.7;
				fighter2.setFacing(false);
			} else {
				fighter2.x += fighter2.moveSpeed * 0.7;
				fighter2.setFacing(true);
			}
		} else if (!fighter2.isAttacking && Math.random() < 0.04) {
			fighter2.attack();
		}
		if (!fighter2.isJumping && Math.random() < 0.01) {
			fighter2.jump();
		}
		if (fighter2.isSpecialReady && Math.random() < 0.008) {
			fighter2.special();
		}
	}
	// --- Update fighters ---
	fighter1.update();
	fighter2.update();
	// --- Update attacks ---
	for (var i = attacks.length - 1; i >= 0; i--) {
		var atk = attacks[i];
		atk.update();
		// Remove if destroyed
		if (atk.destroyed) {
			attacks.splice(i, 1);
			continue;
		}
		// Set owner if not set
		if (!atk.owner) {
			atk.setOwner(atk.isSpecial ? atk.x < 2048 / 2 ? fighter1 : fighter2 : fighter1);
		}
		// Check collision
		var target = atk.owner === fighter1 ? fighter2 : fighter1;
		if (atk.intersects(target) && !atk.hit) {
			// Combo logic: check if this hit is within 1.5 seconds (90 frames) of the last hit by this attacker
			var nowTick = LK.ticks || 0;
			if (typeof atk.owner.lastHitTime === "undefined") atk.owner.lastHitTime = -9999;
			if (typeof atk.owner.comboCount === "undefined") atk.owner.comboCount = 0;
			var prevCombo = atk.owner.comboCount;
			if (nowTick - atk.owner.lastHitTime <= 90) {
				atk.owner.comboCount++;
				// Impact effect on combo text when combo increases
				if (atk.owner === fighter1 && atk.owner.comboCount > prevCombo) {
					comboText1.scaleX = comboText1.scaleY = 1.3;
					tween(comboText1, {
						scaleX: 1,
						scaleY: 1
					}, {
						duration: 180
					});
				} else if (atk.owner === fighter2 && atk.owner.comboCount > prevCombo) {
					comboText2.scaleX = comboText2.scaleY = 1.3;
					tween(comboText2, {
						scaleX: 1,
						scaleY: 1
					}, {
						duration: 180
					});
				}
			} else {
				atk.owner.comboCount = 1;
				// Impact effect on combo text when combo increases from 0
				if (atk.owner === fighter1 && atk.owner.comboCount > prevCombo) {
					comboText1.scaleX = comboText1.scaleY = 1.3;
					tween(comboText1, {
						scaleX: 1,
						scaleY: 1
					}, {
						duration: 180
					});
				} else if (atk.owner === fighter2 && atk.owner.comboCount > prevCombo) {
					comboText2.scaleX = comboText2.scaleY = 1.3;
					tween(comboText2, {
						scaleX: 1,
						scaleY: 1
					}, {
						duration: 180
					});
				}
			}
			atk.owner.lastHitTime = nowTick;
			// Knockback direction: +1 if attacker is facing right, -1 if left
			var knockbackDir = atk.owner && atk.owner.isFacingRight ? 1 : -1;
			// Knockback strength: special attacks knock back SIGNIFICANTLY more (much stronger effect)
			var knockbackStrength = atk.isSpecial ? 480 : 64;
			target.takeDamage(atk.damage, knockbackDir, knockbackStrength);
			// If hit by a special attack, make target immobile for 1 second (60 frames)
			if (atk.isSpecial) {
				target.immobile = true;
				LK.setTimeout(function () {
					target.immobile = false;
				}, 1000);
			}
			atk.hit = true;
			atk.destroy();
			// Flash on hit
			LK.effects.flashObject(target, 0xff0000, 200);
			// Show a visible attack effect at the hit location, rotated to match the attack direction
			var hitEffect = LK.getAsset(atk.isSpecial ? 'special_attack' : 'attack', {
				anchorX: 0.5,
				anchorY: 0.5,
				x: target.x,
				y: target.y - 200
			});
			// Rotate the effect to match the direction the attacker is facing
			if (atk.owner && atk.owner.isFacingRight === false) {
				hitEffect.rotation = Math.PI; // Face left
			} else {
				hitEffect.rotation = 0; // Face right (default)
			}
			game.addChild(hitEffect);
			// Animate the effect: scale up and fade out, then destroy
			hitEffect.scaleX = hitEffect.scaleY = 1.2;
			hitEffect.alpha = 1;
			tween(hitEffect, {
				scaleX: 2.0,
				scaleY: 2.0,
				alpha: 0
			}, {
				duration: 350,
				onFinish: function onFinish() {
					if (hitEffect && hitEffect.destroy) hitEffect.destroy();
				}
			});
		}
	}
	// --- Health bar updates ---
	// Removed number healthbars update
	// --- Combo reset logic: reset combo if 1.5 seconds (90 frames) have passed since last hit ---
	var nowTick = LK.ticks || 0;
	if (nowTick - fighter1.lastHitTime > 90) {
		fighter1.comboCount = 0;
	}
	if (nowTick - fighter2.lastHitTime > 90) {
		fighter2.comboCount = 0;
	}
	// Update combo counters under health bars
	comboText1.setText(('COMBO: ' + (fighter1.comboCount || 0) + '!').toUpperCase());
	comboText2.setText(('COMBO: ' + (fighter2.comboCount || 0) + '!').toUpperCase());
	// --- Win/lose/round logic ---
	var roundOver = false;
	var winner = null;
	if (fighter1.health <= 0) {
		wins2++;
		roundOver = true;
		winner = 2;
	} else if (fighter2.health <= 0) {
		wins1++;
		roundOver = true;
		winner = 1;
	} else if (roundTimer <= 0) {
		if (fighter1.health > fighter2.health) {
			wins1++;
			winner = 1;
		} else if (fighter2.health > fighter1.health) {
			wins2++;
			winner = 2;
		} else {
			// Draw, no one gets a win
		}
		roundOver = true;
	}
	if (roundOver) {
		if (wins1 >= 2) {
			LK.showYouWin();
			return;
		} else if (wins2 >= 2) {
			LK.showGameOver();
			return;
		}
		// Next round
		round++;
		roundTimer = roundTime;
		fighter1.health = fighter1.maxHealth;
		fighter2.health = fighter2.maxHealth;
		fighter1.updateHealthBar();
		fighter2.updateHealthBar();
		fighter1.x = 600;
		fighter2.x = 2048 - 600;
		fighter1.setFacing(true);
		fighter2.setFacing(false);
		// Remove all attacks
		for (var j = attacks.length - 1; j >= 0; j--) {
			if (attacks[j].destroy) attacks[j].destroy();
		}
		attacks = [];
	}
};

===================================================================
--- original.js
+++ change.js
@@ -540,14 +540,49 @@
 			// Combo logic: check if this hit is within 1.5 seconds (90 frames) of the last hit by this attacker
 			var nowTick = LK.ticks || 0;
 			if (typeof atk.owner.lastHitTime === "undefined") atk.owner.lastHitTime = -9999;
 			if (typeof atk.owner.comboCount === "undefined") atk.owner.comboCount = 0;
+			var prevCombo = atk.owner.comboCount;
 			if (nowTick - atk.owner.lastHitTime <= 90) {
 				atk.owner.comboCount++;
-				// Optionally: show combo feedback (e.g. flash, text, etc)
-				// Example: LK.effects.flashObject(atk.owner, 0xffff00, 150);
+				// Impact effect on combo text when combo increases
+				if (atk.owner === fighter1 && atk.owner.comboCount > prevCombo) {
+					comboText1.scaleX = comboText1.scaleY = 1.3;
+					tween(comboText1, {
+						scaleX: 1,
+						scaleY: 1
+					}, {
+						duration: 180
+					});
+				} else if (atk.owner === fighter2 && atk.owner.comboCount > prevCombo) {
+					comboText2.scaleX = comboText2.scaleY = 1.3;
+					tween(comboText2, {
+						scaleX: 1,
+						scaleY: 1
+					}, {
+						duration: 180
+					});
+				}
 			} else {
 				atk.owner.comboCount = 1;
+				// Impact effect on combo text when combo increases from 0
+				if (atk.owner === fighter1 && atk.owner.comboCount > prevCombo) {
+					comboText1.scaleX = comboText1.scaleY = 1.3;
+					tween(comboText1, {
+						scaleX: 1,
+						scaleY: 1
+					}, {
+						duration: 180
+					});
+				} else if (atk.owner === fighter2 && atk.owner.comboCount > prevCombo) {
+					comboText2.scaleX = comboText2.scaleY = 1.3;
+					tween(comboText2, {
+						scaleX: 1,
+						scaleY: 1
+					}, {
+						duration: 180
+					});
+				}
 			}
 			atk.owner.lastHitTime = nowTick;
 			// Knockback direction: +1 if attacker is facing right, -1 if left
 			var knockbackDir = atk.owner && atk.owner.isFacingRight ? 1 : -1;