Add: FlyingSaucer class

src/game/typing/word_flyingsaucer/flyingsaucer.js

@@ -0,0 +1,68 @@
+FlyingSaucer.prototype = Object.create(Phaser.Sprite.prototype);
+FlyingSaucer.constructor = FlyingSaucer;
+
+function FlyingSaucer(lineIndex) {
+	this.lineIndex = lineIndex;
+
+	this.isActivated = false;
+	this.speed = FlyingSaucer.DEFAULT_SPEED;
+
+	Phaser.Sprite.call(this, game, game.world.centerX, game.world.centerY, 'alien_normal');
+	game.add.existing(this);
+	game.physics.arcade.enable(this);
+
+	this.scale.set(1);
+	this.anchor.set(0.5);
+	this.halfWidth = this.width / 2;
+
+	this.moveInitialPos();
+
+	// this.setActive(true);
+}
+
+
+
+FlyingSaucer.prototype.update = function() {
+	if(this.isActivated) {
+		var deltaTime = game.time.elapsed / 1000;
+		this.y += this.speed * deltaTime;
+
+		if(this.y > GAME_SCREEN_SIZE.y - 200)
+			this.moveInitialPos();
+	} else {
+		this.stop();
+	}
+}
+
+
+FlyingSaucer.prototype.setup = function(wordLevel, speedLevel) {
+	this.wordLevel = wordLevel;
+	this.speedLevel = speedLevel;
+}
+
+
+
+FlyingSaucer.prototype.stop = function() {
+	this.body.velocity.setTo(0, 0);
+}
+
+FlyingSaucer.prototype.setActive = function(isActivated) {
+	this.isActivated = isActivated;
+}
+
+FlyingSaucer.prototype.moveInitialPos = function() {
+	this.x = 50 + this.lineIndex * 100;
+	this.y = 100;
+}
+
+
+
+FlyingSaucer.loadResource = function() {
+	if(!game.cache.checkImageKey('alien_normal'))
+		game.load.image('alien_normal',	'../../../resources/image/character/alien/green_alien.png');
+}
+
+
+
+FlyingSaucer.DEFAULT_SPEED		= 10;	// dot per sec
+