Combining Bitmaps and Sound - HTML5 Canvas - page 489

function checkCollisions() {
//loop through rocks then missiles.
//There will always be rocks and a ship,
//but there will not always be missiles.
var tempRock = {};
var rocksLength = rocks.length-1;
var tempPlayerMissile = {};
var playerMissileLength = playerMissiles.length-1;
var saucerLength = saucers.length-1;
var tempSaucer = {};
var saucerMissileLength = saucerMissiles.length-1;
rocks: for (var rockCtr=rocksLength;rockCtr>=0;rockCtr--){
tempRock = rocks[rockCtr];
missiles:for (var playerMissileCtr=playerMissileLength;
playerMissileCtr>=0;playerMissileCtr--){
tempPlayerMissile = playerMissiles[playerMissileCtr];
if (boundingBoxCollide(tempRock,tempPlayerMissile)){
//ConsoleLog.log("hit rock");
createExplode(tempRock.x+tempRock.halfWidth,
tempRock.y+tempRock.halfHeight,10,tempRock.scale);
if (tempRock.scale<3) {
splitRock(tempRock.scale+1, tempRock.x, tempRock.y);
}
addToScore(tempRock.scoreValue);
playerMissiles.splice(playerMissileCtr,1);
tempPlayerMissile = null;
rocks.splice(rockCtr,1);
tempRock = null;
break rocks;
break missiles;
}
}
saucers:for (var saucerCtr=saucerLength;saucerCtr>=0;saucerCtr--){
tempSaucer = saucers[saucerCtr];
if (boundingBoxCollide(tempRock,tempSaucer)){
//ConsoleLog.log("hit rock");
createExplode(tempSaucer.x+tempSaucer.halfWidth,
tempSaucer.y+tempSaucer.halfHeight,10,0);
createExplode(tempRock.x+tempRock.halfWidth,
tempRock.y+tempRock.halfHeight,10,tempRock.scale);
if (tempRock.scale<3) {
splitRock(tempRock.scale+1, tempRock.x, tempRock.y);
}