20120324-Titanium Nagoya Chatroom vol.2

20120324TiNagoyaChatroomQuickTiGame2dSample.js

var win1 = Ti.UI.createWindow({backgroundColor:'black'});
var totalScore = 0;
var scoreLabel = Titanium.UI.createLabel({
  top : 10,
  left : 10,
  height : 20,
  width : 'auto',
  color : 'white',
  text : 'Score: ' + totalScore
});
var quicktigame2d = require('com.googlecode.quicktigame2d');
var game = quicktigame2d.createGameView();
var scene = quicktigame2d.createScene();
game.screen = {width:320, height:480};
game.fps = 30;
game.color(0, 0, 0);
game.pushScene(scene);
var tank = quicktigame2d.createSprite({image:'images/tank.png'});
tank.x = (game.screen.width/2) - (tank.width/2);
tank.y = game.screen.height - tank.height;
var back = quicktigame2d.createSprite({image:'images/back.png'});
back.x = (game.screen.width/2) - (back.width/2);
back.y = 480 - back.height;
scene.add(back);
scene.add(tank);
var aliens = [];
var aliensSpeed = [];
var bullets = [];
var bulletsSpeed = [];

game.addEventListener('onload', function(e) {
  initAliens();
  initBullet();
  game.start();
});
game.addEventListener('enterframe', function(e) {
  bulletCollidesWithAliens();
  updateAliensPosition();
  updateBulletPosition();
});
game.addEventListener('touchmove',function(e){
  tank.x = e.x;
});

win1.add(game);
win1.add(scoreLabel);
win1.open();

function initAliens(){
 for (var i = 0; i < 5; i++) {
    aliens[i]= quicktigame2d.createSprite({image:'images/alien1.png'});
    aliensSpeed[i] = 5;
    aliens[i].x = Math.random() * game.screen.width;
    aliens[i].y = -100;
    scene.add(aliens[i]);
  }
}
function initBullet(){
  for(var j=0;j<10;j++){
    bullets[j]= quicktigame2d.createSprite({image:'images/bullet.png'});
    bullets[j].x = initBulletsPostion();
    bullets[j].y = tank.y - (bullets[j].height);
    bulletsSpeed[j] = 10;
    scene.add(bullets[j]);
  }
}
function initBulletsPostion(){
  return tank.x + (tank.width/2) -(bullets[0].width/2);
}
function updateAliensPosition(){
  for (var i = 0; i < 5; i++) {
    aliens[i].y += aliensSpeed[i] * Math.random();
    if(aliens[i].y > 480){
      aliens[i].y = -100;
    }
  }
}
function updateBulletPosition(){
  for (var i = 0; i < 10; i++) {
    bullets[i].y -= bulletsSpeed[i];
    if(bullets[i].y < 0 || bullets[i].y > 480){
      bullets[i].x = initBulletsPostion();
      bullets[i].y = tank.y - (bullets[i].height);
    }
  }
}
function bulletCollidesWithAliens(){
  for (var i = 0; i < 10; i++) {
    for(var j=0;j<5;j++){
      var flg = bullets[i].collidesWith(aliens[j]);
      if(flg){
        totalScore +=100;
        scoreLabel.text = ('Score:' + totalScore);
        aliens[j].y = -100;
        bullets[i].x = initBulletsPostion();
        bullets[i].y = tank.y - (bullets[i].height);
      }
    }
  }
}