Combining Bitmaps and Sound - HTML5 Canvas - page 493

}
function createExplode(x,y,num,type) {
playSound(SOUND_EXPLODE,.5);
for (var partCtr=0;partCtr<num;partCtr++){
if (particlePool.length > 0){
newParticle = particlePool.pop();
newParticle.dx = Math.random()*3;
if (Math.random()<.5){
newParticle.dx *= -1;
}
newParticle.dy = Math.random()*3;
if (Math.random()<.5){
newParticle.dy *= -1;
}
newParticle.life = Math.floor(Math.random()*30+30);
newParticle.lifeCtr = 0;
newParticle.x = x;
newParticle.width = 2;
newParticle.height = 2;
newParticle.y = y;
newParticle.type = type;
//ConsoleLog.log("newParticle.life=" + newParticle.life);
particles.push(newParticle);
}
}
}
function boundingBoxCollide(object1, object2) {
var left1 = object1.x;
var left2 = object2.x;
var right1 = object1.x + object1.hitWidth;
var right2 = object2.x + object2.hitWidth;
var top1 = object1.y;
var top2 = object2.y;
var bottom1 = object1.y + object1.hitHeight;
var bottom2 = object2.y + object2.hitHeight;
if (bottom1 < top2) return(false);
if (top1 > bottom2) return(false);
if (right1 < left2) return(false);
if (left1 > right2) return(false);
return(true);
};