/**** * Classes ****/ // DebugCell class var DebugCell = Container.expand(function () { var self = Container.call(this); var cellGraphics = self.attachAsset('cell', { anchorX: 0.5, anchorY: 0.5 }); cellGraphics.tint = Math.random() * 0xffffff; // Add a debug arrow to the debug cells var debugArrows = []; // Add a number label to the debug cells var numberLabel = new Text2('0', { size: 30, fill: "#ffffff", weight: 800 }); numberLabel.anchor.set(.5, .5); self.addChild(numberLabel); self.update = function () {}; self.down = function () { if (self.cell.type == 0 || self.cell.type == 1) { self.cell.type = self.cell.type == 1 ? 0 : 1; if (grid.pathFind()) { self.cell.type = self.cell.type == 1 ? 0 : 1; grid.pathFind(); var notification = game.addChild(new Notification("Path is blocked!")); notification.x = 2048 / 2; notification.y = grid.height - 50; } grid.renderDebug(); } }; self.removeArrows = function () { while (debugArrows.length) { self.removeChild(debugArrows.pop()); } }; self.render = function (data) { switch (data.type) { case 0: case 2: { if (data.pathId != pathId) { self.removeArrows(); numberLabel.setText("-"); cellGraphics.tint = 0x880000; return; } numberLabel.visible = true; var tint = Math.floor(data.score / maxScore * 0x88); cellGraphics.tint = 0x88 - tint << 8 | tint; while (debugArrows.length > data.targets.length) { self.removeChild(debugArrows.pop()); } for (var a = 0; a < data.targets.length; a++) { var destination = data.targets[a]; var ox = destination.x - data.x; var oy = destination.y - data.y; var angle = Math.atan2(oy, ox); if (!debugArrows[a]) { debugArrows[a] = LK.getAsset('arrow', { anchorX: -.5, anchorY: 0.5 }); debugArrows[a].alpha = .5; self.addChildAt(debugArrows[a], 1); // debugArrows = } debugArrows[a].rotation = angle; // debugArrow.rotation = angle; } break; } case 1: { self.removeArrows(); cellGraphics.tint = 0xaaaaaa; numberLabel.visible = false; break; } case 3: { self.removeArrows(); cellGraphics.tint = 0x008800; numberLabel.visible = false; break; } } numberLabel.setText(Math.floor(data.score / 1000) / 10); }; }); // Enemy class var Enemy = Container.expand(function () { var self = Container.call(this); var enemyGraphics = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5 }); self.speed = Math.random() * .2 + .03; self.cellX = 0; self.cellY = 0; self.currentCellX = 0; self.currentCellY = 0; self.currentTarget = undefined; // Add health bar to the enemy var healthBarOutline = self.attachAsset('healthBarOutline', { anchorX: 0.5, anchorY: 0.5 }); var healthBar = self.attachAsset('healthBar', { anchorX: 0.5, anchorY: 0.5 }); healthBarOutline.y = healthBar.y = -enemyGraphics.height / 2 - 10; // Position the health bar above the enemy self.healthBar = healthBar; }); //Class for the grid, handles all logic related to grid movement and interaction var Grid = Container.expand(function (gridWidth, gridHeight) { var self = Container.call(this); self.cells = []; self.spawns = []; self.goals = []; for (var i = 0; i < gridWidth; i++) { self.cells[i] = []; for (var j = 0; j < gridHeight; j++) { self.cells[i][j] = { score: 0, pathId: 0 }; } } for (var i = 0; i < gridWidth; i++) { for (var j = 0; j < gridHeight; j++) { var debugCell = new DebugCell(); // Set the type to 1 (wall) if the cell is on the edge of the grid, otherwise set it to 0 (ground) var cell = self.cells[i][j]; var cellType = i === 0 || i === gridWidth - 1 || j === 0 || j === gridHeight - 1 ? 1 : 0; if (i > 11 - 3 && i <= 11 + 3) { if (j === 0) { cellType = 2; self.spawns.push(cell); } else if (j === gridHeight - 1) { cellType = 3; self.goals.push(cell); } } cell.type = cellType; cell.debugCell = debugCell; cell.x = i; cell.y = j; /*if (cell.type == 0) { if (Math.random() > .5) { cell.type = 1; } }*/ //Cache neighbours for speed cell.upLeft = self.cells[i - 1] && self.cells[i - 1][j - 1]; cell.up = self.cells[i - 1] && self.cells[i - 1][j]; cell.upRight = self.cells[i - 1] && self.cells[i - 1][j + 1]; cell.left = self.cells[i][j - 1]; cell.right = self.cells[i][j + 1]; cell.downLeft = self.cells[i + 1] && self.cells[i + 1][j - 1]; cell.down = self.cells[i + 1] && self.cells[i + 1][j]; cell.downRight = self.cells[i + 1] && self.cells[i + 1][j + 1]; cell.neighbors = [cell.upLeft, cell.up, cell.upRight, cell.right, cell.downRight, cell.down, cell.downLeft, cell.left]; cell.targets = []; self.addChild(debugCell); debugCell.cell = cell; debugCell.x = i * 75; debugCell.y = j * 75; } } self.getCell = function (x, y) { return self.cells[x] && self.cells[x][y]; }; self.pathFind = function () { var before = new Date().getTime(); maxScore = 0; var toProcess = self.goals.concat([]); pathId += 1; for (var a = 0; a < toProcess.length; a++) { toProcess[a].pathId = pathId; } function processNode(node, targetValue, targetNode) { if (node && node.type != 1) { if (node.pathId < pathId || targetValue < node.score) { node.targets = [targetNode]; } else if (node.pathId == pathId && targetValue == node.score) { node.targets.push(targetNode); } if (node.pathId < pathId || targetValue < node.score) { node.score = targetValue; if (node.pathId != pathId) { toProcess.push(node); } node.pathId = pathId; if (targetValue > maxScore) { maxScore = targetValue; } } } } while (toProcess.length) { var nodes = toProcess; toProcess = []; for (var a = 0; a < nodes.length; a++) { var node = nodes[a]; var targetScore = node.score + 14142; processNode(node.upLeft, targetScore, node); processNode(node.upRight, targetScore, node); processNode(node.downRight, targetScore, node); processNode(node.downLeft, targetScore, node); targetScore = node.score + 10000; processNode(node.up, targetScore, node); processNode(node.right, targetScore, node); processNode(node.down, targetScore, node); processNode(node.left, targetScore, node); } } for (var a = 0; a < self.spawns.length; a++) { if (self.spawns[a].pathId != pathId) { console.warn("Spawn blocked"); return true; } } for (var a = 0; a < enemies.length; a++) { var enemy = enemies[a]; if (enemy.currentTarget) { if (enemy.currentTarget.pathId != pathId) { console.warn("Enemy blocked"); return true; } } } console.log("Speed", new Date().getTime() - before); }; self.renderDebug = function () { for (var i = 0; i < gridWidth; i++) { for (var j = 0; j < gridHeight; j++) { var debugCell = self.cells[i][j].debugCell; debugCell.render(self.cells[i][j]); } } }; self.updateEnemy = function (enemy) { var cell = grid.getCell(enemy.cellX, enemy.cellY); if (cell.type == 3) { return true; } if (!enemy.currentTarget) { enemy.currentTarget = cell.targets[0]; } if (enemy.currentTarget) { //Allows enemies to change direction right away. if (cell.score < enemy.currentTarget.score) { enemy.currentTarget = cell; } var ox = enemy.currentTarget.x - enemy.currentCellX; var oy = enemy.currentTarget.y - enemy.currentCellY; var dist = Math.sqrt(ox * ox + oy * oy); if (dist < enemy.speed) { enemy.cellX = Math.round(enemy.currentCellX); enemy.cellY = Math.round(enemy.currentCellY); enemy.currentTarget = undefined; return; } var angle = Math.atan2(oy, ox); enemy.currentCellX += Math.cos(angle) * enemy.speed; enemy.currentCellY += Math.sin(angle) * enemy.speed; } enemy.x = enemy.currentCellX * 75; enemy.y = enemy.currentCellY * 75; }; }); // Notification class var Notification = Container.expand(function (message) { var self = Container.call(this); var notificationGraphics = self.attachAsset('notification', { anchorX: 0.5, anchorY: 0.5 }); var notificationText = new Text2(message, { size: 50, fill: "#000000", weight: 800 }); notificationText.anchor.set(0.5, 0.5); notificationGraphics.width = notificationText.width + 30; self.addChild(notificationText); self.alpha = 1; var fadeOutTime = 120; // 2 seconds at 60FPS self.update = function () { if (fadeOutTime > 0) { fadeOutTime--; self.alpha = Math.min(fadeOutTime / 120 * 2, 1); } else { self.destroy(); } }; }); // Assets will be automatically created and loaded by the LK engine // Tower class var Tower = Container.expand(function () { var self = Container.call(this); var towerGraphics = self.attachAsset('tower', { anchorX: 0.5, anchorY: 0.5 }); }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000000 //Init game with black background }); /**** * Game Code ****/ var pathId = 1; var maxScore = 0; var tower = game.addChild(new Tower()); tower.x = 2048 / 2; tower.y = 2732 / 2; var enemies = []; var defenses = []; var grid = new Grid(24, 28); grid.x = 160; grid.y = 150; grid.pathFind(); grid.renderDebug(); game.addChild(grid); var offset = 0; game.update = function () { if (offset++ % 100 == 0) { var target = grid.spawns[Math.random() * grid.spawns.length >> 0]; var enemy = grid.addChild(new Enemy()); enemy.currentCellX = enemy.cellX = target.x; enemy.currentCellY = enemy.cellY = target.y; enemies.push(enemy); } for (var a = enemies.length - 1; a >= 0; a--) { if (grid.updateEnemy(enemies[a])) { grid.removeChild(enemies[a]); enemies.splice(a--, 1); } } };