Add: dodge app

src/game/mouse/dodge/alien.js

@@ -0,0 +1,109 @@
+Alien.prototype = Object.create(Phaser.Sprite.prototype);
+Alien.constructor = Alien;
+
+function Alien(spaceship) {
+	this.spaceship = spaceship;
+
+	this.isActivated = false;
+	this.speed = Alien.DEFAULT_SPEED_DOT_PER_SEC;
+	this.angleFromSpaceship = 0;
+	this.angleFromAlien = 0;
+
+	Phaser.Sprite.call(this, game, 0, 0, 'alien_normal');
+	this.anchor.set(0.5);
+
+	game.add.existing(this);
+	this.moveRandomPosition();
+
+	this.setActive(true);
+}
+
+
+
+
+Alien.prototype.moveRandomPosition = function() {
+	this.angleFromAlien = game.rnd.integerInRange(0, 360);
+	// console.log(this.angleFromAlien);
+
+	var radians = this.angleFromAlien * Math.PI / 180;
+
+	var radious = Alien.START_RADIOUS_PX * ( ( (100 + game.rnd.integerInRange(0, Alien.START_RANDOM_RADIOUS_PERCENT) ) / 100) );
+	var posX = Math.sin(radians) * radious;
+	var posY = Math.cos(radians) * radious;
+
+	this.x = this.spaceship.x + posX;
+	this.y = this.spaceship.y + posY;
+
+	this.angle = this.getSpriteAngle(this.angleFromAlien);
+}
+
+Alien.prototype.update = function() {
+	if(!this.isActivated)
+		return;
+
+	var deltaTime = game.time.elapsed / 1000;
+
+	var radians = this.angleFromAlien * Math.PI / 180;
+	var moveX = Math.sin(radians) * this.speed * deltaTime;
+	var moveY = Math.cos(radians) * this.speed * deltaTime;
+
+	this.x -= moveX;
+	this.y -= moveY;
+
+	var distanceX = this.x - game.world.centerX;
+	var distanceY = this.y - game.world.centerY;
+	var distanceFromCenter = Math.sqrt(Math.abs(distanceX * distanceX) + Math.abs(distanceY * distanceY));
+	if(distanceFromCenter > Alien.START_RADIOUS_PX)
+		this.moveRandomPosition();
+}
+
+
+Alien.prototype.stop = function() {
+	this.setActive(false);
+}
+
+Alien.prototype.setActive = function(isActivated) {
+	this.isActivated = isActivated;
+}
+
+Alien.prototype.getSpriteAngle = function (angle){
+	return 360 - angle;
+}
+
+Alien.prototype.getAngle = function (x1, y1, x2, y2){
+	var dx = x2 - x1;
+	var dy = y2 - y1;
+
+
+	var rad= Math.atan2(dx, dy);
+	var degree = (rad * 180) / Math.PI ;
+	if(degree < 0)
+		degree += 360;
+
+	return degree;
+}
+
+Alien.prototype.goRandomPosition = function() {
+	// set random position
+	var SPAWN_BOX_LEFT		= 80;
+	var SPAWN_BOX_WIDTH		= game.world.width - 160;
+	var SPAWN_BOX_TOP		= 280;
+	var SPAWN_BOX_HEIGHT	= game.world.height - 400;
+
+	this.x = SPAWN_BOX_LEFT + Math.random() * SPAWN_BOX_WIDTH;
+	this.y = SPAWN_BOX_TOP + Math.random() * SPAWN_BOX_HEIGHT;
+
+	// if(isDebugMode()) {
+	// 	this.game.add.graphics()
+	// 		.beginFill(0xffffff, 0.1)
+	// 		.drawRect(SPAWN_BOX_LEFT, SPAWN_BOX_TOP, SPAWN_BOX_WIDTH, SPAWN_BOX_HEIGHT);
+	// }
+
+}
+
+
+
+Alien.DEFAULT_SPEED_DOT_PER_SEC		= 100;
+
+Alien.START_RADIOUS_PX				= 600;
+Alien.START_RANDOM_RADIOUS_PERCENT	= 40;