/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ var Pea = Container.expand(function () { var self = Container.call(this); var peaGraphics = self.attachAsset('pea', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 8; self.damage = 1; self.lane = 0; self.update = function () { self.x += self.speed; }; return self; }); var Plant = Container.expand(function (plantType) { var self = Container.call(this); self.plantType = plantType || 'peashooter'; self.health = 100; self.maxHealth = 100; self.shootTimer = 0; self.sunTimer = 0; self.lane = 0; self.gridX = 0; self.gridY = 0; var plantGraphics = self.attachAsset(self.plantType, { anchorX: 0.5, anchorY: 0.5 }); self.takeDamage = function (damage) { self.health -= damage; if (self.health <= 0) { self.shouldRemove = true; } }; self.update = function () { if (self.plantType === 'peashooter') { self.shootTimer++; if (self.shootTimer >= 60) { // Shoot every second // Check for zombies in same lane var hasTarget = false; for (var i = 0; i < zombies.length; i++) { if (zombies[i].lane === self.lane && zombies[i].x > self.x) { hasTarget = true; break; } } if (hasTarget) { var pea = new Pea(); pea.x = self.x + 60; pea.y = self.y; pea.lane = self.lane; peas.push(pea); game.addChild(pea); LK.getSound('shoot').play(); } self.shootTimer = 0; } } else if (self.plantType === 'sunflower') { self.sunTimer++; if (self.sunTimer >= 480) { // Generate sun every 8 seconds var sun = new Sun(); sun.x = self.x + (Math.random() - 0.5) * 100; sun.y = self.y + (Math.random() - 0.5) * 100; suns.push(sun); game.addChild(sun); self.sunTimer = 0; } } }; return self; }); var Sun = Container.expand(function () { var self = Container.call(this); var sunGraphics = self.attachAsset('sun', { anchorX: 0.5, anchorY: 0.5 }); self.value = 25; self.lifeTime = 0; self.maxLife = 600; // 10 seconds at 60fps self.update = function () { self.lifeTime++; if (self.lifeTime > self.maxLife) { self.shouldRemove = true; } // Gentle pulsing animation var scale = 1 + Math.sin(self.lifeTime * 0.1) * 0.1; sunGraphics.scaleX = scale; sunGraphics.scaleY = scale; }; self.down = function (x, y, obj) { sunPoints += self.value; sunText.setText(sunPoints); LK.getSound('sunCollect').play(); self.shouldRemove = true; }; return self; }); var Zombie = Container.expand(function (zombieType) { var self = Container.call(this); self.zombieType = zombieType || 'basicZombie'; self.health = zombieType === 'coneZombie' ? 30 : 15; self.maxHealth = self.health; self.speed = zombieType === 'coneZombie' ? -1.5 : -2; self.lane = 0; self.eatTimer = 0; self.targetPlant = null; var zombieGraphics = self.attachAsset(self.zombieType, { anchorX: 0.5, anchorY: 0.5 }); self.takeDamage = function (damage) { self.health -= damage; LK.effects.flashObject(self, 0xff0000, 200); LK.getSound('zombieHit').play(); if (self.health <= 0) { self.shouldRemove = true; } }; self.update = function () { // Check for plants to eat var foundPlant = null; for (var i = 0; i < plants.length; i++) { var plant = plants[i]; if (plant.lane === self.lane && Math.abs(plant.x - self.x) < 80 && plant.x < self.x) { foundPlant = plant; break; } } if (foundPlant) { self.targetPlant = foundPlant; self.eatTimer++; if (self.eatTimer >= 60) { // Eat every second foundPlant.takeDamage(10); self.eatTimer = 0; } } else { self.targetPlant = null; self.x += self.speed; } }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x228B22 }); /**** * Game Code ****/ // Sound effects // Zombie assets // Projectile and pickup assets // Plant assets // Grid and UI assets // Game constants var GRID_COLS = 9; var GRID_ROWS = 5; var GRID_SIZE = 160; var GRID_SPACING = 164; var GRID_START_X = 300; var GRID_START_Y = 400; // Game state var sunPoints = 150; var selectedPlant = null; var waveTimer = 0; var currentWave = 1; var zombiesThisWave = 0; var maxZombiesPerWave = 5; var sunGenerationTimer = 0; // Game arrays var plants = []; var zombies = []; var peas = []; var suns = []; var gridCells = []; // Create grid for (var row = 0; row < GRID_ROWS; row++) { gridCells[row] = []; for (var col = 0; col < GRID_COLS; col++) { var gridBorder = game.addChild(LK.getAsset('gridBorder', { x: GRID_START_X + col * GRID_SPACING, y: GRID_START_Y + row * GRID_SPACING, anchorX: 0.5, anchorY: 0.5 })); var gridCell = game.addChild(LK.getAsset('gridCell', { x: GRID_START_X + col * GRID_SPACING, y: GRID_START_Y + row * GRID_SPACING, anchorX: 0.5, anchorY: 0.5 })); gridCell.gridX = col; gridCell.gridY = row; gridCell.isEmpty = true; gridCells[row][col] = gridCell; gridCell.down = function (x, y, obj) { if (selectedPlant && obj.isEmpty) { var plantCost = getPlantCost(selectedPlant); if (sunPoints >= plantCost) { var newPlant = new Plant(selectedPlant); newPlant.x = obj.x; newPlant.y = obj.y; newPlant.lane = obj.gridY; newPlant.gridX = obj.gridX; newPlant.gridY = obj.gridY; plants.push(newPlant); game.addChild(newPlant); obj.isEmpty = false; sunPoints -= plantCost; sunText.setText(sunPoints); selectedPlant = null; updatePlantButtons(); LK.getSound('plantPlaced').play(); } } }; } } // Create house wall var houseWall = game.addChild(LK.getAsset('houseWall', { x: 200, y: 1366, anchorX: 0.5, anchorY: 0.5 })); // Create UI var sunText = new Text2(sunPoints.toString(), { size: 80, fill: 0xFFFF00 }); sunText.anchor.set(0.5, 0); LK.gui.top.addChild(sunText); var waveText = new Text2('Wave: 1', { size: 60, fill: 0xFFFFFF }); waveText.anchor.set(1, 1); LK.gui.bottomRight.addChild(waveText); // Plant selection buttons var plantButtons = []; var plantTypes = ['peashooter', 'sunflower', 'wallnut']; var plantCosts = [100, 50, 50]; for (var i = 0; i < plantTypes.length; i++) { var button = game.addChild(LK.getAsset(plantTypes[i], { x: 100, y: 200 + i * 180, anchorX: 0.5, anchorY: 0.5, scaleX: 0.8, scaleY: 0.8 })); button.plantType = plantTypes[i]; button.cost = plantCosts[i]; button.originalAlpha = 1; var costText = new Text2(button.cost.toString(), { size: 40, fill: 0xFFFF00 }); costText.anchor.set(0.5, 0); costText.x = button.x; costText.y = button.y + 80; game.addChild(costText); button.costText = costText; button.down = function (x, y, obj) { if (sunPoints >= obj.cost) { selectedPlant = obj.plantType; updatePlantButtons(); } }; plantButtons.push(button); } function getPlantCost(plantType) { switch (plantType) { case 'peashooter': return 100; case 'sunflower': return 50; case 'wallnut': return 50; default: return 100; } } function updatePlantButtons() { for (var i = 0; i < plantButtons.length; i++) { var button = plantButtons[i]; if (sunPoints >= button.cost) { button.alpha = button.plantType === selectedPlant ? 0.7 : 1; } else { button.alpha = 0.3; } } } function spawnZombie() { var zombieType = Math.random() < 0.3 ? 'coneZombie' : 'basicZombie'; var zombie = new Zombie(zombieType); zombie.x = 2100; zombie.y = GRID_START_Y + Math.floor(Math.random() * GRID_ROWS) * GRID_SPACING; zombie.lane = Math.floor((zombie.y - GRID_START_Y + GRID_SPACING / 2) / GRID_SPACING); zombies.push(zombie); game.addChild(zombie); } game.update = function () { // Generate sun over time sunGenerationTimer++; if (sunGenerationTimer >= 600) { // Every 10 seconds var sun = new Sun(); sun.x = 400 + Math.random() * 1200; sun.y = 300 + Math.random() * 400; suns.push(sun); game.addChild(sun); sunGenerationTimer = 0; } // Spawn zombies waveTimer++; if (waveTimer >= 300 && zombiesThisWave < maxZombiesPerWave) { // Every 5 seconds spawnZombie(); zombiesThisWave++; waveTimer = 0; } if (zombiesThisWave >= maxZombiesPerWave && zombies.length === 0) { // Start next wave currentWave++; maxZombiesPerWave = Math.min(15, 5 + currentWave * 2); zombiesThisWave = 0; waveTimer = 0; waveText.setText('Wave: ' + currentWave); } // Update and remove peas for (var i = peas.length - 1; i >= 0; i--) { var pea = peas[i]; if (pea.x > 2200) { pea.destroy(); peas.splice(i, 1); continue; } // Check pea-zombie collision for (var j = 0; j < zombies.length; j++) { var zombie = zombies[j]; if (pea.lane === zombie.lane && pea.x >= zombie.x - 50 && pea.x <= zombie.x + 50 && Math.abs(pea.y - zombie.y) < 70) { zombie.takeDamage(pea.damage); pea.destroy(); peas.splice(i, 1); break; } } } // Update and remove zombies for (var i = zombies.length - 1; i >= 0; i--) { var zombie = zombies[i]; if (zombie.shouldRemove) { zombie.destroy(); zombies.splice(i, 1); continue; } if (zombie.x < 250) { LK.showGameOver(); return; } } // Update and remove plants for (var i = plants.length - 1; i >= 0; i--) { var plant = plants[i]; if (plant.shouldRemove) { gridCells[plant.gridY][plant.gridX].isEmpty = true; plant.destroy(); plants.splice(i, 1); } } // Update and remove suns for (var i = suns.length - 1; i >= 0; i--) { var sun = suns[i]; if (sun.shouldRemove) { sun.destroy(); suns.splice(i, 1); } } updatePlantButtons(); };