HTML and CSS Reference
In-Depth Information
function hitTest(image1,image2) {
r1left = image1.x;
r1top = image1.y;
r1right = image1.x + image1.width;
r1bottom = image1.y + image1.height;
r2left = image2.x;
r2top = image2.y;
r2right = image2.x + image2.width;
r2bottom = image2.y + image2.height;
retval = false;
if ( (r1left > r2right) || (r1right < r2left) || (r1bottom < r2top) ||
(r1top > r2bottom) ) {
retval = false;
} else {
retval = true;
}
return retval;
}
function eventMouseMove(event) {
if ( event.layerX || event.layerX == 0) { // Firefox
mouseX = event.layerX ;
mouseY = event.layerY;
} else if (event.offsetX || event.offsetX == 0) { // Opera
mouseX = event.offsetX;
mouseY = event.offsetY;
}
player.x = mouseX;
player.y = mouseY;
}
function eventMouseUp(event) {
missiles.push({speed:5, x: player.x+.5*playerImage.width,
y:player.y-missileImage.height,width:missileImage.width,
height:missileImage.height});
playSound(SOUND_SHOOT,.5);
}
function playSound(sound,volume) {
var soundFound = false;
var soundIndex = 0;
var tempSound;
if (soundPool.length> 0) {
while (!soundFound && soundIndex < soundPool.length) {
