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classStage.js
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classStage.js
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class Stage extends GameObject
{
constructor(level, player){
super(0,0,0,0);
this.tile = [];
this.counter = 0;
this.player = player;
this.music = new Audio();
this.level = level;
this.background = new Image();
}
start(){
this.music.play();
}
update(){
this.collisionDetection();
this.checkPlayerOutOfBounds();
}
placeTile(obj){
this.tile[this.counter] = obj;
this.counter++;
}
//Check collision for every collider from every tile
collisionDetection()
{
//
player.grounded = false;
//this.tile.forEach(function(obj){
for(var i = 0; i < this.tile.length; i++){
if(this.tile[i] instanceof PlatformTile)
{
this.check4sideCollision(this.tile[i]);
}
else if(this.tile[i] instanceof OnOffTile && this.tile[i].on){
this.check4sideCollision(this.tile[i]);
}
else if (this.tile[i] instanceof WinningTile)
{
if(this.tile[i].colliders[0].isCollidingWith(player)){
Global.gameIsWon = true;
Global.gameIsPaused = true;
pauseLoop();
}
}else if(this.tile[i] instanceof ReverseGravityTile)
{
if(this.tile[i].colliders[0].isCollidingWith(player)){
player.setGravity(this.tile[i].gravityWay);
}
}else if(this.tile[i] instanceof SpeedChangerTile && (!this.tile[i].speedChanged))
{
if(this.tile[i].colliders[0].isCollidingWith(player)){
this.changeSpeed(this.tile[i].increase);
this.tile[i].speedChanged = true;
}
}else if(this.tile[i] instanceof KillTile)
{
if(this.tile[i].colliders[0].isCollidingWith(player)){
player.die();
}
}
}
}
check4sideCollision(obj)
{
//check side collision
if(obj.colliders[2].isCollidingWith(player)){
player.die();
}
//check top collision
else if(obj.colliders[0].isCollidingWith(player))
{
player.y = obj.y - player.height;
//check if player is grounded for gravity top-bottom
if(player.gravityScale > 0)
{
player.grounded = true;
player.speedY = 0;
}
}
//check bottom collision
else if(obj.colliders[1].isCollidingWith(player))
{
player.y = (obj.colliders[1].y+obj.colliders[1].height);
//check if player is grounded for gravity bottom-top
if(player.gravityScale < 0)
{
player.grounded = true;
player.speedY = 0;
}
}
}
checkPlayerOutOfBounds()
{
if(player.y - player.height < -300)
player.die();
else
if(player.y > Global.canvas.height)
player.die();
}
changeSpeed(increase)
{
if(increase)
{
this.tile.forEach(function(obj)
{
obj.setSpeedX(obj.speedX*1.25);
});
}
else
{
this.tile.forEach(function(obj)
{
obj.setSpeedX(obj.speedX/1.25);
});
}
}
setStage(){
this.string = Global.stageString(this.level);
this.speedX = this.string[0][0] * (Global.blockSize/32);
this.stageWidth = this.string[1].length;
this.stageHeight = 21;
this.music.src = this.string[0][1];
this.background.src = this.string[0][2];
this.counter = 0;
this.offset = (8)*Global.blockSize;
//read the stage string and instantiate objects
for(var j=1;j<this.stageHeight+1;j++){
for(var i=0;i<this.stageWidth;i++)
{
switch(this.string[j][i])
{
case "a":
this.placeTile(new PlatformTile(Global.blockSize*i + Global.canvas.width/2 - this.offset, Global.blockSize*(j-1), Global.blockSize, Global.blockSize, this.speedX));
break;
case "O":
this.placeTile(new OnOffTile(Global.blockSize*i + Global.canvas.width/2 - this.offset, Global.blockSize*(j-1), Global.blockSize, Global.blockSize, this.speedX, true));
break;
case "o":
this.placeTile(new OnOffTile(Global.blockSize*i + Global.canvas.width/2 - this.offset, Global.blockSize*(j-1), Global.blockSize, Global.blockSize, this.speedX, false));
break;
case "f":
this.placeTile(new FakeTile(Global.blockSize*i + Global.canvas.width/2 - this.offset, Global.blockSize*(j-1), Global.blockSize, Global.blockSize, this.speedX));
break;
case "v":
this.placeTile(new WinningTile(Global.blockSize*i + Global.canvas.width/2 - this.offset, Global.blockSize*(j-1), Global.blockSize, Global.blockSize, this.speedX));
break;
case "u":
this.placeTile(new ReverseGravityTile(Global.blockSize*i + Global.canvas.width/2 - this.offset, Global.blockSize*(j-1), 2*Global.blockSize, 4*Global.blockSize, this.speedX,"up"));
break;
case "d":
this.placeTile(new ReverseGravityTile(Global.blockSize*i + Global.canvas.width/2 - this.offset, Global.blockSize*(j-1),2*Global.blockSize, 4*Global.blockSize, this.speedX,"down"));
break;
case ">":
this.placeTile(new SpeedChangerTile(Global.blockSize*i + Global.canvas.width/2 - this.offset, Global.blockSize*(j-1), Global.blockSize, Global.blockSize, this.speedX,true));
break;
case "<":
this.placeTile(new SpeedChangerTile(Global.blockSize*i + Global.canvas.width/2 - this.offset, Global.blockSize*(j-1), Global.blockSize, Global.blockSize, this.speedX,false));
break;
case "M":
this.placeTile(new KillTile(Global.blockSize*i + Global.canvas.width/2 - this.offset, Global.blockSize*(j-1), Global.blockSize, Global.blockSize, this.speedX,"up"));
break;
case "W":
this.placeTile(new KillTile(Global.blockSize*i + Global.canvas.width/2 - this.offset, Global.blockSize*(j-1), Global.blockSize, Global.blockSize, this.speedX,"down"));
break;
}
}
}
}
}