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Coins #8

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Coins #8

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656b02e
First pass at adding coins
sarahudacity May 25, 2010
a3c0ae4
Create helper functions
sarahudacity May 29, 2010
0c6daf1
Make it possible to collect coins
sarahudacity Jun 1, 2010
354dfdd
Make ships able to spawn on coins
sarahudacity Jun 1, 2010
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161 changes: 115 additions & 46 deletions game.js
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Original file line number Diff line number Diff line change
Expand Up @@ -99,8 +99,17 @@ Sprite = function () {
this.bridgesH = true;
this.bridgesV = true;

// collidesWith determines the list of sprites that can interact with this sprite.
// Anything not in this list will just pass right through this sprite.
this.collidesWith = [];

// getInterference returns a list of sprites that this sprite cannot spawn on top of.
// By default this is the same as collides with. The exception is that ships can
// collide with coins, but they can also spawn on top of coins.
this.getInterference = function () {
return this.collidesWith;
}

this.x = 0;
this.y = 0;
this.rot = 0;
Expand Down Expand Up @@ -331,7 +340,9 @@ Sprite = function () {
return trans;
};
this.isClear = function () {
if (this.collidesWith.length == 0) return true;
interferesWith = this.getInterference();

if (interferesWith.length == 0) return true;
var cn = this.currentNode;
if (cn == null) {
var gridx = Math.floor(this.x / GRID_SIZE);
Expand All @@ -340,15 +351,15 @@ Sprite = function () {
gridy = (gridy >= this.grid[0].length) ? 0 : gridy;
cn = this.grid[gridx][gridy];
}
return (cn.isEmpty(this.collidesWith) &&
cn.north.isEmpty(this.collidesWith) &&
cn.south.isEmpty(this.collidesWith) &&
cn.east.isEmpty(this.collidesWith) &&
cn.west.isEmpty(this.collidesWith) &&
cn.north.east.isEmpty(this.collidesWith) &&
cn.north.west.isEmpty(this.collidesWith) &&
cn.south.east.isEmpty(this.collidesWith) &&
cn.south.west.isEmpty(this.collidesWith));
return (cn.isEmpty(interferesWith) &&
cn.north.isEmpty(interferesWith) &&
cn.south.isEmpty(interferesWith) &&
cn.east.isEmpty(interferesWith) &&
cn.west.isEmpty(interferesWith) &&
cn.north.east.isEmpty(interferesWith) &&
cn.north.west.isEmpty(interferesWith) &&
cn.south.east.isEmpty(interferesWith) &&
cn.south.west.isEmpty(interferesWith));
};
this.wrapPostMove = function () {
if (this.x > Game.canvasWidth) {
Expand Down Expand Up @@ -381,7 +392,29 @@ Ship = function () {

this.postMove = this.wrapPostMove;

this.collidesWith = ["asteroid", "bigalien", "alienbullet"];
this.collidesWith = ["asteroid", "bigalien", "alienbullet", "coin"];
this.getInterference = function () {
return ["asteroid", "bigalien", "alienbullet"];
}

this.shoot = function() {
for (var i = 0; i < this.bullets.length; i++) {
if (!this.bullets[i].visible) {
SFX.laser();
var bullet = this.bullets[i];
var rad = ((this.rot-90) * Math.PI)/180;
var vectorx = Math.cos(rad);
var vectory = Math.sin(rad);
// move to the nose of the ship
bullet.x = this.x + vectorx * 4;
bullet.y = this.y + vectory * 4;
bullet.vel.x = 6 * vectorx + this.vel.x;
bullet.vel.y = 6 * vectory + this.vel.y;
bullet.visible = true;
break;
}
}
}

this.preMove = function (delta) {
if (KEY_STATUS.left) {
Expand Down Expand Up @@ -409,22 +442,7 @@ Ship = function () {
if (KEY_STATUS.space) {
if (this.delayBeforeBullet <= 0) {
this.delayBeforeBullet = 10;
for (var i = 0; i < this.bullets.length; i++) {
if (!this.bullets[i].visible) {
SFX.laser();
var bullet = this.bullets[i];
var rad = ((this.rot-90) * Math.PI)/180;
var vectorx = Math.cos(rad);
var vectory = Math.sin(rad);
// move to the nose of the ship
bullet.x = this.x + vectorx * 4;
bullet.y = this.y + vectory * 4;
bullet.vel.x = 6 * vectorx + this.vel.x;
bullet.vel.y = 6 * vectory + this.vel.y;
bullet.visible = true;
break;
}
}
this.shoot();
}
}

Expand All @@ -436,13 +454,15 @@ Ship = function () {
};

this.collision = function (other) {
SFX.explosion();
Game.explosionAt(other.x, other.y);
Game.FSM.state = 'player_died';
this.visible = false;
this.currentNode.leave(this);
this.currentNode = null;
Game.lives--;
if (other.name != 'coin') {
SFX.explosion();
Game.explosionAt(other.x, other.y);
Game.FSM.state = 'player_died';
this.visible = false;
this.currentNode.leave(this);
this.currentNode = null;
Game.lives--;
}
};

};
Expand Down Expand Up @@ -654,30 +674,68 @@ Asteroid = function () {

this.collidesWith = ["ship", "bullet", "bigalien", "alienbullet"];

this.breakIntoFragments = function () {
for (var i = 0; i < 3; i++) {
var roid = $.extend(true, {}, this);
roid.vel.x = Math.random() * 6 - 3;
roid.vel.y = Math.random() * 6 - 3;
if (Math.random() > 0.5) {
roid.points.reverse();
}
roid.vel.rot = Math.random() * 2 - 1;
roid.move(roid.scale * 3); // give them a little push
Game.sprites.push(roid);
}
}

this.collision = function (other) {
SFX.explosion();
if (other.name == "bullet") Game.score += 120 / this.scale;
this.scale /= 3;
if (this.scale > 0.5) {
// break into fragments
for (var i = 0; i < 3; i++) {
var roid = $.extend(true, {}, this);
roid.vel.x = Math.random() * 6 - 3;
roid.vel.y = Math.random() * 6 - 3;
if (Math.random() > 0.5) {
roid.points.reverse();
}
roid.vel.rot = Math.random() * 2 - 1;
roid.move(roid.scale * 3); // give them a little push
Game.sprites.push(roid);
}
this.breakIntoFragments();
}
Game.explosionAt(other.x, other.y);
this.die();
};
};
Asteroid.prototype = new Sprite();

Coin = function () {
this.init("coin",
[-5, 0,
0, 5,
5, 0,
0, -5]);

this.collidesWith = ["ship"];

this.newPosition = function () {
this.x = Math.random() * Game.canvasWidth;
this.y = Math.random() * Game.canvasHeight;
};

this.newValue = function () {
this.value = Math.floor(Math.random() * 10 + 1) * 10;
}

this.setup = function () {
this.newPosition();
this.newValue();
};

this.collision = function (other) {
Game.score += this.value;
SFX.explosion();
this.visible = false;
Game.nextCoinTime = Date.now() + (10000 * Math.random());
this.newPosition();
this.newValue();
}

}
Coin.prototype = new Sprite();

Explosion = function () {
this.init("explosion");

Expand Down Expand Up @@ -881,6 +939,7 @@ Game = {
bigAlien: null,

nextBigAlienTime: null,
nextCoinTime: null,


spawnAsteroids: function (count) {
Expand Down Expand Up @@ -940,6 +999,7 @@ Game = {
Game.spawnAsteroids();

Game.nextBigAlienTime = Date.now() + 30000 + (30000 * Math.random());
Game.nextCoinTime = Date.now() + 2000 + (10000 * Math.random());

this.state = 'spawn_ship';
},
Expand Down Expand Up @@ -968,6 +1028,10 @@ Game = {
Game.bigAlien.visible = true;
Game.nextBigAlienTime = Date.now() + (30000 * Math.random());
}
if (!Game.coin.visible &&
Date.now() > Game.nextCoinTime) {
Game.coin.visible = true;
}
},
new_level: function () {
if (this.timer == null) {
Expand Down Expand Up @@ -1095,6 +1159,11 @@ $(function () {
extraDude.preMove = null;
extraDude.children = [];

var coin = new Coin();
coin.setup();
sprites.push(coin);
Game.coin = coin;

var i, j = 0;
var showFramerate = false;
var avgFramerate = 0;
Expand Down