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DavidOldAccount/GeoBlasterGame

Created August 28, 2014 14:52
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GeoBlasterGame HTML5
Raw
GeoBlasterGame
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>GeoBlaster</title>
<script type="text/javascript">
window.addEventListener('load', eventWindowLoaded, false);
function eventWindowLoaded() {
canvasApp();
}
function canvasApp(){
var theCanvas = document.getElementById('canvas');
if (!theCanvas || !theCanvas.getContext) {
return;
}
var context = theCanvas.getContext('2d');
if (!context) {
return;
}
//application states
const GAME_STATE_TITLE=0;
const GAME_STATE_NEW_GAME=1;
const GAME_STATE_NEW_LEVEL=2;
const GAME_STATE_PLAYER_START=3;
const GAME_STATE_PLAY_LEVEL=4;
const GAME_STATE_PLAYER_DIE=5;
const GAME_STATE_GAME_OVER=6;
var currentGameState=0;
var currentGameStateFunction=null;
//title screen
var titleStarted=false;
//gameover screen
var gameOverStarted=false;
//objects for game play
//game environment
var score=0;
var level=0;
var extraShipAtEach=10000;
var extraShipsEarned=0;
var playerShips=5;
//playfield
var xMin=0;
var xMax=500;
var yMin=0;
var yMax=800;
//score values
var bigRockScore=50;
var medRockScore=75;
var smlRockScore=100;
var saucerScore=300;
//rock scale constants
const ROCK_SCALE_LARGE=3;
const ROCK_SCALE_MEDIUM=4;
const ROCK_SCALE_SMALL=5;
//create game objects and arrays
var player={};
var rocks=[];
var saucers=[];
var playerMissiles=[];
var particles=[]
var saucerMissiles=[];
//level specific
var levelRockMaxSpeedAdjust=1;
var levelSaucerMax = 20;
var levelSaucerOccurenceRate=25; //this will be multiplied by the level and a max can be se
var levelSaucerSpeed=5;
var levelSaucerFireDelay=300;
var levelSaucerFireRate=100;
var levelSaucerMissileSpeed=10;
//keyPresses
var keyPressList=[];
function runGame(){
currentGameStateFunction();
}
function switchGameState(newState) {
currentGameState=newState;
switch (currentGameState) {
case GAME_STATE_TITLE:
currentGameStateFunction=gameStateTitle;
break;
case GAME_STATE_NEW_GAME:
currentGameStateFunction=gameStateNewGame;
break;
case GAME_STATE_NEW_LEVEL:
currentGameStateFunction=gameStateNewLevel;
break;
case GAME_STATE_PLAYER_START:
currentGameStateFunction=gameStatePlayerStart;
break;
case GAME_STATE_PLAY_LEVEL:
currentGameStateFunction=gameStatePlayLevel;
break;
case GAME_STATE_PLAYER_DIE:
currentGameStateFunction=gameStatePlayerDie;
break;
case GAME_STATE_GAME_OVER:
currentGameStateFunction=gameStateGameOver;
break;
}
}
function gameStateTitle() {
if (titleStarted !=true){
fillBackground();
setTextStyle();
context.fillText ("Shoot the rocks and saucers by superLaser!!", 150, 75);
context.fillText ("Press Space To Start!!", 120, 140);
titleStarted=true;
}else{
//wait for space key click
if (keyPressList[32]==true){
//ConsoleLog.log("space pressed");
switchGameState(GAME_STATE_NEW_GAME);
titleStarted=false;
}
}
}
function gameStateNewGame(){
//ConsoleLog.log("gameStateNewGame")
//setup new game
level=0;
score=0;
playerShips=3;
player.maxVelocity=5;
player.width=40;
player.height=40;
player.halfWidth=20;
player.halfHeight=20;
player.rotationalVelocity=5; //how many degrees to turn the ship
player.thrustAcceleration=.05;
player.missileFrameDelay=5;
player.thrust=false;
fillBackground();
renderScoreBoard();
switchGameState(GAME_STATE_NEW_LEVEL)
}
function gameStateNewLevel(){
rocks=[];
saucers=[];
playerMissiles=[];
particles=[];
saucerMissiles=[];
level++;
levelRockMaxSpeedAdjust=level*.25;
if (levelRockMaxSpeedAdjust > 3){
levelRockMaxSpeed=3;
}
levelSaucerMax=1+Math.floor(level/10);
if (levelSaucerMax > 5){
levelSaucerMax=5;
}
levelSaucerOccurenceRate=10+3*level;
if (levelSaucerOccurenceRate > 35){
levelSaucerOccurenceRate=35;
}
levelSaucerSpeed=1+.5*level;
if (levelSaucerSpeed>5){
levelSaucerSpeed=5;
}
levelSaucerFireDelay=120-10*level;
if (levelSaucerFireDelay<20) {
levelSaucerFireDelay=20;
}
levelSaucerFireRate=20 + 3*level;
if (levelSaucerFireRate<50) {
levelSaucerFireRate=50;
}
levelSaucerMissileSpeed=1+.2*level;
if (levelSaucerMissileSpeed > 4){
levelSaucerMissileSpeed=4;
}
//create level rocks
for (var newRockctr=0;newRockctr<level+3;newRockctr++){
var newRock={};
newRock.scale=1;
//scale
//1=large
//2=medium
//3=small
//these will be used as the devisor for the new size
//50/1=50
//50/2=25
//50/3=16
newRock.width=100;
newRock.height=100;
newRock.halfWidth=50;
newRock.halfHeight=50;
//start all new rocks in upper left for ship safety
newRock.x=Math.floor(Math.random()*100);
//ConsoleLog.log("newRock.x=" + newRock.x);
newRock.y=Math.floor(Math.random()*100);//50
//ConsoleLog.log("newRock.y=" + newRock.y);
newRock.dx=(Math.random()*2)+levelRockMaxSpeedAdjust;
if (Math.random()<.5){
newRock.dx*=-1;
}
newRock.dy=(Math.random()*2)+levelRockMaxSpeedAdjust;
if (Math.random()<.5){
newRock.dy*=-1;
}
//rotation speed and direction
newRock.rotationInc=(Math.random()*5)+1;
if (Math.random()<.5){
newRock.rotationInc*=-1;
}
newRock.scoreValue=bigRockScore;
newRock.rotation=0;
rocks.push(newRock);
//ConsoleLog.log("rock created rotationInc=" + newRock.rotationInc);
}
resetPlayer();
switchGameState(GAME_STATE_PLAYER_START);
}
function gameStatePlayerStart(){
fillBackground();
renderScoreBoard();
if (player.alpha < 1){
player.alpha+=.02;
context.globalAlpha = player.alpha;
}else{
switchGameState(GAME_STATE_PLAY_LEVEL);
}
renderPlayerShip(player.x, player.y,270,1);
context.globalAlpha=1;
updateRocks();
renderRocks();
}
function gameStatePlayLevel(){
checkKeys();
update();
render();
checkCollisions();
checkForExtraShip();
checkForEndOfLevel();
frameRateCounter.countFrames();
}
function resetPlayer() {
player.rotation=270;
player.x=.5*xMax;
player.y=.5*yMax;
player.facingX=0;
player.facingY=0;
player.movingX=0;
player.movingY=0;
player.alpha=0;
player.missileFrameCount=0;
}
function checkForExtraShip() {
if (Math.floor(score/extraShipAtEach) > extraShipsEarned) {
playerShips++
extraShipsEarned++;
}
}
function checkForEndOfLevel(){
if (rocks.length==0) {
switchGameState(GAME_STATE_NEW_LEVEL);
}
}
function gameStatePlayerDie(){
if (particles.length >0 || playerMissiles.length>0) {
fillBackground();
renderScoreBoard();
updateRocks();
updateSaucers();
updateParticles();
updateSaucerMissiles();
updatePlayerMissiles();
renderRocks();
renderSaucers();
renderParticles();
renderSaucerMissiles();
renderPlayerMissiles();
frameRateCounter.countFrames();
}else{
playerShips--;
if (playerShips<1) {
switchGameState(GAME_STATE_GAME_OVER);
}else{
resetPlayer();
switchGameState(GAME_STATE_PLAYER_START);
}
}
}
function gameStateGameOver() {
//ConsoleLog.log("Game Over State");
if (gameOverStarted !=true){
fillBackground();
renderScoreBoard();
setTextStyle();
context.fillText ("Game Over, Man!It's Over!!", 150, 70);
context.fillText ("Press space to try again.", 120, 140);
gameOverStarted=true;
}else{
//wait for space key click
if (keyPressList[32]==true){
//ConsoleLog.log("space pressed");
switchGameState(GAME_STATE_TITLE);
gameOverStarted=false;
}
}
}
function fillBackground() {
// draw background and text
context.fillStyle = 'brown';
context.fillRect(xMin, yMin, xMax, yMax);
}
function setTextStyle() {
context.fillStyle = 'yellow';
context.font = '15px _sans';
context.textBaseline = 'top';
}
function renderScoreBoard() {
context.fillStyle = "lime";
context.fillText('分数 ' + score, 10, 20);
renderPlayerShip(200,16,270,.75)
context.fillText('X ' + playerShips, 220, 20);
context.fillText('帧数: ' + frameRateCounter.lastFrameCount, 300,20)
}
function checkKeys() {
//check keys
if (keyPressList[38]==true){
//thrust
var angleInRadians = player.rotation * Math.PI / 180;
player.facingX=Math.cos(angleInRadians);
player.facingY=Math.sin(angleInRadians);
var movingXNew=player.movingX+player.thrustAcceleration*player.facingX;
var movingYNew=player.movingY+player.thrustAcceleration*player.facingY;
var currentVelocity= Math.sqrt ((movingXNew*movingXNew) + (movingXNew*movingXNew));
if (currentVelocity < player.maxVelocity) {
player.movingX=movingXNew;
player.movingY=movingYNew;
}
player.thrust=true;
}else{
player.thrust=false;
}
if (keyPressList[37]==true) {
//rotate counter-clockwise
player.rotation-=player.rotationalVelocity;
}
if (keyPressList[39]==true) {
//rotate clockwise
player.rotation+=player.rotationalVelocity;;
}
if (keyPressList[32]==true) {
//ConsoleLog.log("player.missileFrameCount=" + player.missileFrameCount);
//ConsoleLog.log("player.missileFrameDelay=" + player.missileFrameDelay);
if (player.missileFrameCount>player.missileFrameDelay){
firePlayerMissile();
player.missileFrameCount=0;
}
}
}
function update() {
updatePlayer();
updatePlayerMissiles();
updateRocks();
updateSaucers();
updateSaucerMissiles();
updateParticles();
}
function render() {
fillBackground();
renderScoreBoard();
renderPlayerShip(player.x,player.y,player.rotation,1);
renderPlayerMissiles();
renderRocks();
renderSaucers();
renderSaucerMissiles();
renderParticles();
}
function updatePlayer() {
player.missileFrameCount++;
player.x+=player.movingX;
player.y+=player.movingY;
if (player.x > xMax) {
player.x=-player.width;
}else if (player.x<-player.width){
player.x=xMax;
}
if (player.y > yMax) {
player.y=-player.height;
}else if (player.y<-player.height){
player.y=yMax;
}
}
function updatePlayerMissiles() {
var tempPlayerMissile={};
var playerMissileLength=playerMissiles.length-1;
//ConsoleLog.log("update playerMissileLength=" + playerMissileLength);
for (var playerMissileCtr=playerMissileLength;playerMissileCtr>=0;playerMissileCtr--){
//ConsoleLog.log("update player missile" + playerMissileCtr)
tempPlayerMissile=playerMissiles[playerMissileCtr];
tempPlayerMissile.x+=tempPlayerMissile.dx;
tempPlayerMissile.y+=tempPlayerMissile.dy;
if (tempPlayerMissile.x > xMax) {
tempPlayerMissile.x=-tempPlayerMissile.width;
}else if (tempPlayerMissile.x<-tempPlayerMissile.width){
tempPlayerMissile.x=xMax;
}
if (tempPlayerMissile.y > yMax) {
tempPlayerMissile.y=-tempPlayerMissile.height;
}else if (tempPlayerMissile.y<-tempPlayerMissile.height){
tempPlayerMissile.y=yMax;
}
tempPlayerMissile.lifeCtr++;
if (tempPlayerMissile.lifeCtr > tempPlayerMissile.life){
//ConsoleLog.log("removing player missile");
playerMissiles.splice(playerMissileCtr,1)
tempPlayerMissile=null;
}
}
}
function updateRocks(){
var tempRock={};
var rocksLength=rocks.length-1;
//ConsoleLog.log("update rocks length=" + rocksLength);
for (var rockCtr=rocksLength;rockCtr>=0;rockCtr--){
tempRock=rocks[rockCtr]
tempRock.x += tempRock.dx;
tempRock.y += tempRock.dy;
tempRock.rotation+=tempRock.rotationInc;
//ConsoleLog.log("rock rotationInc="+ tempRock.rotationInc)
//ConsoleLog.log("rock rotation="+ tempRock.rotation)
if (tempRock.x > xMax) {
tempRock.x=xMin-tempRock.width;
}else if (tempRock.x<xMin-tempRock.width){
tempRock.x=xMax;
}
if (tempRock.y > yMax) {
tempRock.y=yMin-tempRock.width;
}else if (tempRock.y<yMin-tempRock.width){
tempRock.y=yMax;
}
//ConsoleLog.log("update rock "+ rockCtr)
}
}
function updateSaucers() {
//first check to see is we want to add a saucer
if (saucers.length< levelSaucerMax){
if (Math.floor(Math.random()*100)<=levelSaucerOccurenceRate){
//ConsoleLog.log("create saucer")
var newSaucer={};
newSaucer.width=30;
newSaucer.height=20;
newSaucer.halfHeight=15;
newSaucer.halfWidth=10;
newSaucer.scoreValue=saucerScore;
newSaucer.fireRate=levelSaucerFireRate;
newSaucer.fireDelay=levelSaucerFireDelay;
newSaucer.fireDelayCount=0;
newSaucer.missileSpeed=levelSaucerMissileSpeed;
newSaucer.dy=(Math.random()*2);
if (Math.floor(Math.random)*2==1){
newSaucer.dy*=-1;
}
//choose betweeen left or right edge to start
if (Math.floor(Math.random()*2)==1){
//start on right and go left
newSaucer.x=450;
newSaucer.dx=-1*levelSaucerSpeed;
}else{
//left to right
newSaucer.x=-50;
newSaucer.dx=levelSaucerSpeed;
}
newSaucer.missileSpeed=levelSaucerMissileSpeed;
newSaucer.fireDelay=levelSaucerFireDelay;
newSaucer.fireRate=levelSaucerFireRate;
newSaucer.y=Math.floor(Math.random()*400);
saucers.push(newSaucer);
}
}
var tempSaucer={};
var saucerLength=saucers.length-1;
//ConsoleLog.log("update rocks length=" + rocksLength);
for (var saucerCtr=saucerLength;saucerCtr>=0;saucerCtr--){
tempSaucer=saucers[saucerCtr];
//should saucer fire
tempSaucer.fireDelayCount++;
if (Math.floor(Math.random()*100) <=tempSaucer.fireRate && tempSaucer.fireDelayCount>tempSaucer.fireDelay ){
fireSaucerMissile(tempSaucer)
tempSaucer.fireDelayCount=0;
}
var remove=false;
tempSaucer.x+=tempSaucer.dx;
tempSaucer.y+=tempSaucer.dy;
//remove saucers on left and right edges
if (tempSaucer.dx > 0 && tempSaucer.x >xMax){
remove=true;
}else if (tempSaucer.dx <0 &&tempSaucer.x<xMin-tempSaucer.width){
remove=true;
}
//bounce saucers off over vertical edges
if (tempSaucer.y > yMax || tempSaucer.y<yMin-tempSaucer.width) {
tempSaucer.dy*=-1
}
if (remove==true) {
//remove the saucer
//ConsoleLog.log("saucer removed")
saucers.splice(saucerCtr,1);
tempSaucer=null;
}
}
}
function updateSaucerMissiles() {
var tempSaucerMissile={};
var saucerMissileLength=saucerMissiles.length-1;
for (var saucerMissileCtr=saucerMissileLength;saucerMissileCtr>=0;saucerMissileCtr--){
//ConsoleLog.log("update player missile" + playerMissileCtr)
tempSaucerMissile=saucerMissiles[saucerMissileCtr];
tempSaucerMissile.x += tempSaucerMissile.dx;
tempSaucerMissile.y += tempSaucerMissile.dy;
if (tempSaucerMissile.x > xMax) {
tempSaucerMissile.x=-tempSaucerMissile.width;
}else if (tempSaucerMissile.x<-tempSaucerMissile.width){
tempSaucerMissile.x=xMax;
}
if (tempSaucerMissile.y > yMax) {
tempSaucerMissile.y=-tempSaucerMissile.height;
}else if (tempSaucerMissile.y<-tempSaucerMissile.height){
tempSaucerMissile.y=yMax;
}
tempSaucerMissile.lifeCtr++;
if (tempSaucerMissile.lifeCtr > tempSaucerMissile.life){
//remove
saucerMissiles.splice(saucerMissileCtr,1)
tempSaucerMissile=null;
}
}
}
function updateParticles() {
var tempParticle={};
var particleLength=particles.length-1;
//ConsoleLog.log("particle=" + particleLength)
for (var particleCtr=particleLength;particleCtr>=0;particleCtr--){
var remove =false;
tempParticle=particles[particleCtr];
tempParticle.x+=tempParticle.dx;
tempParticle.y+=tempParticle.dy;
tempParticle.lifeCtr++;
//ConsoleLog.log("particle.lifeCtr=" + tempParticle.lifeCtr);
//try{
if (tempParticle.lifeCtr > tempParticle.life){
remove=true;
} else if ((tempParticle.x > xMax) || (tempParticle.x<xMin) || (tempParticle.y > yMax) || (tempParticle.y<yMin)){
remove=true;
}
//}
//catch(err) {
// ConsoleLog.log ("error in particle");
// ConsoleLog.log("particle:" + particleCtr);
//}
if (remove) {
particles.splice(particleCtr,1)
tempParticle=null;
}
}
}
function renderPlayerShip(x,y,rotation, scale) {
//transformation
var angleInRadians = rotation * Math.PI / 180;
context.save(); //save current state in stack
context.setTransform(1,0,0,1,0,0); // reset to identity
//translate the canvas origin to the center of the player
context.translate(x+player.halfWidth,y+player.halfHeight);
context.rotate(angleInRadians);
context.scale(scale,scale)
//drawShip
context.strokeStyle = 'yellow';
context.beginPath();
//hard coding in locations
//facing right
context.moveTo(-10,-10);
context.lineTo(10,0);
context.moveTo(10,1);
context.lineTo(-10,10);
context.lineTo(1,1);
context.moveTo(1,-1);
context.lineTo(-10,-10);
if (player.thrust==true && scale==1) {
//check for scale==1 for ship indicator does not display with thrust
context.moveTo(-4,-2);
context.lineTo(-4,1);
context.moveTo(-5,-1);
context.lineTo(-10,-1);
context.moveTo(-5,0);
context.lineTo(-10,0);
}
context.stroke();
context.closePath();
//restore context
context.restore(); //pop old state on to screen
}
function renderPlayerMissiles() {
var tempPlayerMissile={};
var playerMissileLength=playerMissiles.length-1;
//ConsoleLog.log("render playerMissileLength=" + playerMissileLength);
for (var playerMissileCtr=playerMissileLength;playerMissileCtr>=0;playerMissileCtr--){
//ConsoleLog.log("draw playert missile " + playerMissileCtr)
tempPlayerMissile=playerMissiles[playerMissileCtr];
context.save(); //save current state in stack
context.setTransform(1,0,0,1,0,0); // reset to identity
//translate the canvas origin to the center of the player
context.translate(tempPlayerMissile.x+1,tempPlayerMissile.y+1);
context.strokeStyle = 'yellow';
context.beginPath();
//draw everything offset by 1/2. Zero Relative 1/2 is 15
context.moveTo(-1,-1);
context.lineTo(1,-1);
context.lineTo(1,1);
context.lineTo(-1,1);
context.lineTo(-1,-1);
context.stroke();
context.closePath();
context.restore(); //pop old state on to screen
}
}
function renderRocks() {
var tempRock={};
var rocksLength=rocks.length-1;
for (var rockCtr=rocksLength;rockCtr>=0;rockCtr--){
tempRock=rocks[rockCtr];
var angleInRadians = tempRock.rotation * Math.PI / 180;
//ConsoleLog.log("render rock rotation"+(tempRock.rotation));
context.save(); //save current state in stack
context.setTransform(1,0,0,1,0,0); // reset to identity
//translate the canvas origin to the center of the player
context.translate(tempRock.x+tempRock.halfWidth,tempRock.y+tempRock.halfHeight);
//ConsoleLog.log("render rock x"+(tempRock.x+tempRock.halfWidth));
//ConsoleLog.log("render rock y"+(tempRock.y+tempRock.halfHeight));
context.rotate(angleInRadians);
context.strokeStyle = 'white';
context.beginPath();
//draw everything offset by 1/2. Zero Relative 1/2 is if .5*width -1. Same for height
context.moveTo(-(tempRock.halfWidth-1),-(tempRock.halfHeight-1));
context.lineTo((tempRock.halfWidth-1),-(tempRock.halfHeight-1));
context.lineTo((tempRock.halfWidth-1),(tempRock.halfHeight-1));
context.lineTo(-(tempRock.halfWidth-1),(tempRock.halfHeight-1));
context.lineTo(-(tempRock.halfWidth-1),-(tempRock.halfHeight-1));
context.stroke();
context.closePath();
context.restore(); //pop old state on to screen
}
}
function renderSaucers() {
var tempSaucer={};
var saucerLength=saucers.length-1;
for (var saucerCtr=saucerLength;saucerCtr>=0;saucerCtr--){
//ConsoleLog.log("saucer: " + saucerCtr);
tempSaucer=saucers[saucerCtr];
context.save(); //save current state in stack
context.setTransform(1,0,0,1,0,0); // reset to identity
//translate the canvas origin to the center of the player
//context.translate(this.x+halfWidth,this.y+halfHeight);
context.translate(tempSaucer.x,tempSaucer.y);
context.strokeStyle = 'lime';
context.beginPath();
//did not move to middle because it is drawn in exact space
context.moveTo(4,0);
context.lineTo(9,0);
context.lineTo(12,3);
context.lineTo(13,3);
context.moveTo(13,4);
context.lineTo(10,7);
context.lineTo(3,7);
context.lineTo(1,5);
context.lineTo(12,5);
context.moveTo(0,4);
context.lineTo(0,3);
context.lineTo(13,3);
context.moveTo(5,1);
context.lineTo(5,2);
context.moveTo(8,1);
context.lineTo(8,2);
context.moveTo(2,2);
context.lineTo(4,0);
context.stroke();
context.closePath();
context.restore(); //pop old state on to screen
}
}
function renderSaucerMissiles() {
var tempSaucerMissile={};
var saucerMissileLength=saucerMissiles.length-1;
//ConsoleLog.log("saucerMissiles= " + saucerMissiles.length)
for (var saucerMissileCtr=saucerMissileLength;saucerMissileCtr>=0;saucerMissileCtr--){
//ConsoleLog.log("draw playert missile " + playerMissileCtr)
tempSaucerMissile=saucerMissiles[saucerMissileCtr];
context.save(); //save current state in stack
context.setTransform(1,0,0,1,0,0); // reset to identity
//translate the canvas origin to the center of the player
context.translate(tempSaucerMissile.x+1,tempSaucerMissile.y+1);
context.strokeStyle = '#ffffff';
context.beginPath();
//draw everything offset by 1/2. Zero Relative 1/2 is 15
context.moveTo(-1,-1);
context.lineTo(1,-1);
context.lineTo(1,1);
context.lineTo(-1,1);
context.lineTo(-1,-1);
context.stroke();
context.closePath();
context.restore(); //pop old state on to screen
}
}
function renderParticles() {
var tempParticle={};
var particleLength=particles.length-1;
for (var particleCtr=particleLength;particleCtr>=0;particleCtr--){
tempParticle=particles[particleCtr];
context.save(); //save current state in stack
context.setTransform(1,0,0,1,0,0); // reset to identity
//translate the canvas origin to the center of the player
context.translate(tempParticle.x,tempParticle.y);
context.strokeStyle = '#ffffff';
context.beginPath();
//draw everything offset by 1/2. Zero Relative 1/2 is 15
context.moveTo(0,0);
context.lineTo(1,1);
context.stroke();
context.closePath();
context.restore(); //pop old state on to screen
}
}
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);
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);
createExplode(tempRock.x+tempRock.halfWidth,tempRock.y+tempRock.halfHeight,10);
if (tempRock.scale<3) {
splitRock(tempRock.scale+1, tempRock.x, tempRock.y);
}
saucers.splice(saucerCtr,1);
tempSaucer=null;
rocks.splice(rockCtr,1);
tempRock=null;
break rocks;
break saucers;
}
}
//saucer missiles against rocks
//this is done here so we don't have to loop through rocks again as it would probably
//be the biggest arrary
saucerMissiles:for (var saucerMissileCtr=saucerMissileLength;saucerMissileCtr>=0;saucerMissileCtr--){
tempSaucerMissile=saucerMissiles[saucerMissileCtr];
if (boundingBoxCollide(tempRock,tempSaucerMissile)){
//ConsoleLog.log("hit rock");
createExplode(tempRock.x+tempRock.halfWidth,tempRock.y+tempRock.halfHeight,10);
if (tempRock.scale<3) {
splitRock(tempRock.scale+1, tempRock.x, tempRock.y);
}
saucerMissiles.splice(saucerCtr,1);
tempSaucerMissile=null;
rocks.splice(rockCtr,1);
tempRock=null;
break rocks;
break saucerMissiles;
}
}
//check player aginst rocks
if (boundingBoxCollide(tempRock,player)){
//ConsoleLog.log("hit player");
createExplode(tempRock.x+tempRock.halfWidth,tempRock.halfHeight,10);
addToScore(tempRock.scoreValue);
if (tempRock.scale<3) {
splitRock(tempRock.scale+1, tempRock.x, tempRock.y);
}
rocks.splice(rockCtr,1);
tempRock=null;
playerDie();
}
}
//now check player against saucers and then saucers against player missiles and finally player against saucer missiles
playerMissileLength=playerMissiles.length-1;
saucerLength=saucers.length-1;
saucers:for (var saucerCtr=saucerLength;saucerCtr>=0;saucerCtr--){
tempSaucer=saucers[saucerCtr];
missiles:for (var playerMissileCtr=playerMissileLength;playerMissileCtr>=0;playerMissileCtr--){
tempPlayerMissile=playerMissiles[playerMissileCtr];
if (boundingBoxCollide(tempSaucer,tempPlayerMissile)){
//ConsoleLog.log("hit rock");
createExplode(tempSaucer.x+tempSaucer.halfWidth,tempSaucer.y+tempSaucer.halfHeight,10);
addToScore(tempSaucer.scoreValue);
playerMissiles.splice(playerMissileCtr,1);
tempPlayerMissile=null;
saucers.splice(saucerCtr,1);
tempSaucer=null;
break saucers;
break missiles;
}
}
//player against saucers
if (boundingBoxCollide(tempSaucer,player)){
//ConsoleLog.log("hit player");
createExplode(tempSaucer.x+16,tempSaucer.y+16,10);
addToScore(tempSaucer.scoreValue);
saucers.splice(rockCtr,1);
tempSaucer=null;
playerDie();
}
}
//saucerMissiles against player
saucerMissileLength=saucerMissiles.length-1;
saucerMissiles:for (var saucerMissileCtr=saucerMissileLength;saucerMissileCtr>=0;saucerMissileCtr--){
tempSaucerMissile=saucerMissiles[saucerMissileCtr];
if (boundingBoxCollide(player,tempSaucerMissile)){
//ConsoleLog.log("saucer missile hit player");
playerDie();
saucerMissiles.splice(saucerCtr,1);
tempSaucerMissile=null;
break saucerMissiles;
}
}
}
function firePlayerMissile(){
//ConsoleLog.log("fire playerMissile");
var newPlayerMissile={};
newPlayerMissile.dx=5*Math.cos(Math.PI*(player.rotation)/180);
newPlayerMissile.dy=5*Math.sin(Math.PI*(player.rotation)/180);
newPlayerMissile.x=player.x+player.halfWidth;
newPlayerMissile.y=player.y+player.halfHeight;
newPlayerMissile.life=60;
newPlayerMissile.lifeCtr=0;
newPlayerMissile.width=2;
newPlayerMissile.height=2;
playerMissiles.push(newPlayerMissile);
}
function fireSaucerMissile(saucer) {
var newSaucerMissile={};
newSaucerMissile.x=saucer.x+.5*saucer.width;
newSaucerMissile.y=saucer.y+.5*saucer.height;
newSaucerMissile.width=2;
newSaucerMissile.height=2;
newSaucerMissile.speed=saucer.missileSpeed;
//ConsoleLog.log("saucer fire");
//fire at player from small saucer
var diffx = player.x-saucer.x;
var diffy = player.y-saucer.y;
var radians = Math.atan2(diffy, diffx);
var degrees = 360 * radians / (2 * Math.PI);
newSaucerMissile.dx=saucer.missileSpeed*Math.cos(Math.PI*(degrees)/180);
newSaucerMissile.dy=saucer.missileSpeed*Math.sin(Math.PI*(degrees)/180);
newSaucerMissile.life=160;
newSaucerMissile.lifeCtr=0;
saucerMissiles.push(newSaucerMissile);
}
function playerDie() {
//ConsoleLog.log("player die");
createExplode(player.x+player.halfWidth, player.y+player.halfWidth,50);
switchGameState(GAME_STATE_PLAYER_DIE);
}
function createExplode(x,y,num) {
//create 10 particles
for (var partCtr=0;partCtr<num;partCtr++){
var newParticle=new Object();
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.y=y;
//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.width;
var right2 = object2.x + object2.width;
var top1 = object1.y;
var top2 = object2.y;
var bottom1 = object1.y + object1.height;
var bottom2 = object2.y + object2.height;
if (bottom1 < top2) return(false);
if (top1 > bottom2) return(false);
if (right1 < left2) return(false);
if (left1 > right2) return(false);
return(true);
};
function splitRock(scale,x,y){
for (var newRockctr=0;newRockctr<2;newRockctr++){
var newRock={};
//ConsoleLog.log("split rock");
if (scale==2){
newRock.scoreValue=medRockScore;
newRock.width=60;
newRock.height=60;
newRock.halfWidth=30;
newRock.halfHeight=30;
}else {
newRock.scoreValue=smlRockScore;
newRock.width=40;
newRock.height=40;
newRock.halfWidth=20;
newRock.halfHeight=20;
}
newRock.scale=scale;
newRock.x=x;
newRock.y=y;
newRock.dx=Math.random()*3;
if (Math.random()<.5){
newRock.dx*=-1;
}
newRock.dy=Math.random()*3;
if (Math.random()<.5){
newRock.dy*=-1;
}
newRock.rotationInc=(Math.random()*5)+1;
if (Math.random()<.5){
newRock.rotationInc*=-1;
}
newRock.rotation=0;
//ConsoleLog.log("new rock scale"+(newRock.scale));
rocks.push(newRock);
}
}
function addToScore(value){
score+=value;
}
document.onkeydown=function(e){
e=e?e:window.event;
//ConsoleLog.log(e.keyCode + "down");
keyPressList[e.keyCode]=true;
}
document.onkeyup=function(e){
//document.body.onkeyup=function(e){
e=e?e:window.event;
//ConsoleLog.log(e.keyCode + "up");
keyPressList[e.keyCode]=false;
};
//*** application start
switchGameState(GAME_STATE_TITLE);
frameRateCounter=new FrameRateCounter();
//**** application loop
const FRAME_RATE=40;
var intervalTime=1000/FRAME_RATE;
setInterval(runGame, intervalTime );
}
//***** object prototypes *****
//*** consoleLog util object
//creat constructor
function ConsoleLog(){
}
//create function that will be added to the class
console_log=function(message) {
if(typeof(console) !== 'undefined' && console != null) {
console.log(message);
}
}
//add class/static function to class by assignment
ConsoleLog.log=console_log;
//*** end console log object
//*** FrameRateCounter object prototype
function FrameRateCounter() {
this.lastFrameCount=0;
var dateTemp =new Date();
this.frameLast=dateTemp.getTime();
delete dateTemp;
this.frameCtr=0;
}
FrameRateCounter.prototype.countFrames=function() {
var dateTemp =new Date();
this.frameCtr++;
if (dateTemp.getTime() >=this.frameLast+1000) {
//ConsoleLog.log("frame event");
this.lastFrameCount=this.frameCtr;
this.frameLast=dateTemp.getTime();
this.frameCtr=0;
}
delete dateTemp;
}
</script>
</head>
<body>
<div style="position: absolute; top: 50px; left: 50px;">
<canvas id="canvas" width="800" height="600">
</canvas>
<a href = "http://www.coloner.icoc.cc/">My Website</a>
</div>
</body>
</html>
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