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jquery.gamequery.js
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/*
* gameQuery rev. $Revision$
*
* Copyright (c) 2008 Selim Arsever (gamequery.onaluf.org)
* licensed under the MIT (MIT-LICENSE.txt)
*/
// this allows use of the convenient $ notation in a plugin
(function($) {
/**
* Constants
*/
/**
* This namespace will be prepended to data values stored by this plugin.
*/
var GAMEQUERY_NAMESPACE = 'GAMEQUERY__';
$.extend({ gameQuery: {
/**
* This is the Animation Object
*/
Animation: function (options) {
// private default values
var defaults = {
imageURL: "",
numberOfFrame: 1,
delta: 0,
rate: 30,
type: 0,
distance: 0,
offsetx: 0,
offsety: 0
};
// options extends defaults
options = $.extend(defaults, options);
//"public" attributes:
this.imageURL = options.imageURL; // The url of the image to be used as an animation or sprite
this.numberOfFrame = options.numberOfFrame;// The number of frames to be displayed when playing the animation
this.delta = options.delta; // The distance in pixels between two frames
this.rate = options.rate; // The rate at which the frames change in miliseconds
this.type = options.type; // The type of the animation.This is a bitwise OR of the properties.
this.distance = options.distance; // The distance in pixels between two animations
this.offsetx = options.offsetx; // The x coordinate where the first sprite begins
this.offsety = options.offsety; // The y coordinate where the first sprite begins
//Whenever a new animation is created we add it to the ResourceManager animation list
$.gameQuery.resourceManager.addAnimation(this);
return true;
},
// "constants" for the different types of an animation
ANIMATION_VERTICAL: 1, // Generated by a vertical offset of the background
ANIMATION_HORIZONTAL: 2, // Generated by a horizontal offset of the background
ANIMATION_ONCE: 4, // Played only once (else looping indefinitely)
ANIMATION_CALLBACK: 8, // A callback is exectued at the end of a cycle
ANIMATION_MULTI: 16, // The image file contains many animations
ANIMATION_PINGPONG: 32, // At the last frame of the animation it reverses
// (if used in conjunction with ONCE it will have no effect)
// "constants" for the different type of geometry for a sprite
GEOMETRY_RECTANGLE: 1,
GEOMETRY_DISC: 2,
// basic values
refreshRate: 30,
/**
* An object to manage resource loading
*/
resourceManager: {
animations: [], // List of animations / images used in the game
sounds: [], // List of sounds used in the game
callbacks: [], // List of the functions called at each refresh
running: false, // State of the game,
/**
* Loads resources before starting the game.
*/
preload: function() {
//Start loading the images
for (var i = this.animations.length-1 ; i >= 0; i --){
this.animations[i].domO = new Image();
this.animations[i].domO.src = this.animations[i].imageURL;
}
//Start loading the sounds
for (var i = this.sounds.length-1 ; i >= 0; i --){
this.sounds[i].load();
}
$.gameQuery.resourceManager.waitForResources();
},
/**
* Waits for all the resources called for in preload() to finish loading.
*/
waitForResources: function() {
var loadbarEnabled = ($.gameQuery.loadbar != undefined);
if(loadbarEnabled){
$($.gameQuery.loadbar.id).width(0);
var loadBarIncremant = $.gameQuery.loadbar.width / (this.animations.length + this.sounds.length);
}
//check the images
var imageCount = 0;
for(var i=0; i < this.animations.length; i++){
if(this.animations[i].domO.complete){
imageCount++;
}
}
//check the sounds
var soundCount = 0;
for(var i=0; i < this.sounds.length; i++){
var temp = this.sounds[i].ready();
if(temp){
soundCount++;
}
}
//Call the load callback with the current progress
if($.gameQuery.resourceManager.loadCallback){
var percent = (imageCount+soundCount)/(this.animations.length + this.sounds.length)*100;
$.gameQuery.resourceManager.loadCallback(percent);
}
if(imageCount + soundCount < (this.animations.length + this.sounds.length)){
imgWait=setTimeout(function () {
$.gameQuery.resourceManager.waitForResources();
}, 100);
} else {
// all the resources are loaded!
// We can associate the animation's images to their corresponding sprites
$.gameQuery.scenegraph.children().each(function(){
// recursive call on the children:
$(this).children().each(arguments.callee);
// add the image as a background
if(this.gameQuery && this.gameQuery.animation){
$(this).css("background-image", "url("+this.gameQuery.animation.imageURL+")");
// we set the correct kind of repeat
if(this.gameQuery.animation.type & $.gameQuery.ANIMATION_VERTICAL) {
$(this).css("background-repeat", "repeat-x");
} else if(this.gameQuery.animation.type & $.gameQuery.ANIMATION_HORIZONTAL) {
$(this).css("background-repeat", "repeat-y");
} else {
$(this).css("background-repeat", "no-repeat");
}
}
});
//Launch the refresh loop
$.gameQuery.resourceManager.running = true;
setInterval(function () {
$.gameQuery.resourceManager.refresh();
},($.gameQuery.refreshRate));
if($.gameQuery.startCallback){
$.gameQuery.startCallback();
}
//make the scenegraph visible
$.gameQuery.scenegraph.css("visibility","visible");
}
},
/**
* This function refresh a unique sprite here 'this' represent a dom object
*/
refreshSprite: function() {
//Call this function on all the children:
// is 'this' a sprite ?
if(this.gameQuery != undefined){
var gameQuery = this.gameQuery;
// does 'this' has an animation ?
if(gameQuery.animation){
//Do we have anything to do?
if ( (gameQuery.idleCounter == gameQuery.animation.rate-1) && gameQuery.playing){
// does 'this' loops?
if(gameQuery.animation.type & $.gameQuery.ANIMATION_ONCE){
if(gameQuery.currentFrame < gameQuery.animation.numberOfFrame-2){
gameQuery.currentFrame += gameQuery.frameIncrement;
} else if(gameQuery.currentFrame == gameQuery.animation.numberOfFrame-2) {
gameQuery.currentFrame += gameQuery.frameIncrement;
// does 'this' has a callback ?
if(gameQuery.animation.type & $.gameQuery.ANIMATION_CALLBACK){
if($.isFunction(gameQuery.callback)){
gameQuery.callback(this);
}
}
}
} else {
if(gameQuery.animation.type & $.gameQuery.ANIMATION_PINGPONG){
if(gameQuery.currentFrame == gameQuery.animation.numberOfFrame-1 && gameQuery.frameIncrement == 1) {
gameQuery.frameIncrement = -1;
} else if (gameQuery.currentFrame == 0 && gameQuery.frameIncrement == -1) {
gameQuery.frameIncrement = 1;
}
}
gameQuery.currentFrame = (gameQuery.currentFrame+gameQuery.frameIncrement)%gameQuery.animation.numberOfFrame;
if(gameQuery.currentFrame == 0){
// does 'this' has a callback ?
if(gameQuery.animation.type & $.gameQuery.ANIMATION_CALLBACK){
if($.isFunction(gameQuery.callback)){
gameQuery.callback(this);
}
}
}
}
// update the background:
if(gameQuery.animation.type & $.gameQuery.ANIMATION_VERTICAL){
if(gameQuery.multi){
$(this).css("background-position",""+(-gameQuery.animation.offsetx-gameQuery.multi)+"px "+(-gameQuery.animation.offsety-gameQuery.animation.delta*gameQuery.currentFrame)+"px");
} else {
$(this).css("background-position",""+(-gameQuery.animation.offsetx)+"px "+(-gameQuery.animation.offsety-gameQuery.animation.delta*gameQuery.currentFrame)+"px");
}
} else if(gameQuery.animation.type & $.gameQuery.ANIMATION_HORIZONTAL) {
if(gameQuery.multi){
$(this).css("background-position",""+(-gameQuery.animation.offsetx-gameQuery.animation.delta*gameQuery.currentFrame)+"px "+(-gameQuery.animation.offsety-gameQuery.multi)+"px");
} else {
$(this).css("background-position",""+(-gameQuery.animation.offsetx-gameQuery.animation.delta*gameQuery.currentFrame)+"px "+(-gameQuery.animation.offsety)+"px");
}
}
}
gameQuery.idleCounter = (gameQuery.idleCounter+1)%gameQuery.animation.rate;
}
}
return true;
},
/**
* This function refresh a unique tile-map, here 'this' represent a dom object
*/
refreshTilemap: function() {
//Call this function on all the children:
// is 'this' a sprite ?
if(this.gameQuery != undefined){
var gameQuery = this.gameQuery;
if($.isArray(gameQuery.frameTracker)){
for(var i=0; i<gameQuery.frameTracker.length; i++){
//Do we have anything to do?
if(gameQuery.idleCounter[i] == gameQuery.animations[i].rate-1){
// does 'this' loops?
if(gameQuery.animations[i].type & $.gameQuery.ANIMATION_ONCE){
if(gameQuery.frameTracker[i] < gameQuery.animations[i].numberOfFrame-1){
gameQuery.frameTracker[i] += gameQuery.frameIncrement[i];
}
} else {
if(gameQuery.animations[i].type & $.gameQuery.ANIMATION_PINGPONG){
if(gameQuery.frameTracker[i] == gameQuery.animations[i].numberOfFrame-1 && gameQuery.frameIncrement[i] == 1) {
gameQuery.frameIncrement[i] = -1;
} else if (gameQuery.frameTracker[i] == 0 && gameQuery.frameIncrement[i] == -1) {
gameQuery.frameIncrement[i] = 1;
}
}
gameQuery.frameTracker[i] = (gameQuery.frameTracker[i]+gameQuery.frameIncrement[i])%gameQuery.animations[i].numberOfFrame;
}
}
gameQuery.idleCounter[i] = (gameQuery.idleCounter[i]+1)%gameQuery.animations[i].rate;
}
} else {
//Do we have anything to do?
if(gameQuery.idleCounter == gameQuery.animations.rate-1){
// does 'this' loops?
if(gameQuery.animations.type & $.gameQuery.ANIMATION_ONCE){
if(gameQuery.frameTracker < gameQuery.animations.numberOfFrame-1){
gameQuery.frameTracker += gameQuery.frameIncrement;
}
} else {
if(gameQuery.animations.type & $.gameQuery.ANIMATION_PINGPONG){
if(gameQuery.frameTracker == gameQuery.animations.numberOfFrame-1 && gameQuery.frameIncrement == 1) {
gameQuery.frameIncrement = -1;
} else if (gameQuery.frameTracker == 0 && gameQuery.frameIncrement == -1) {
gameQuery.frameIncrement = 1;
}
}
gameQuery.frameTracker = (gameQuery.frameTracker+gameQuery.frameIncrement)%gameQuery.animations.numberOfFrame;
}
}
gameQuery.idleCounter = (gameQuery.idleCounter+1)%gameQuery.animations.rate;
}
// update the background of all active tiles:
$(this).find(".active").each(function(){
if($.isArray(gameQuery.frameTracker)){
var animationNumber = this.gameQuery.animationNumber
if(gameQuery.animations[animationNumber].type & $.gameQuery.ANIMATION_VERTICAL){
$(this).css("background-position",""+(-gameQuery.animations[animationNumber].offsetx)+"px "+(-gameQuery.animations[animationNumber].offsety-gameQuery.animations[animationNumber].delta*gameQuery.frameTracker[animationNumber])+"px");
} else if(gameQuery.animations[animationNumber].type & $.gameQuery.ANIMATION_HORIZONTAL) {
$(this).css("background-position",""+(-gameQuery.animations[animationNumber].offsetx-gameQuery.animations[animationNumber].delta*gameQuery.frameTracker[animationNumber])+"px "+(-gameQuery.animations[animationNumber].offsety)+"px");
}
} else {
if(gameQuery.animations.type & $.gameQuery.ANIMATION_VERTICAL){
$(this).css("background-position",""+(-gameQuery.animations.offsetx-this.gameQuery.multi)+"px "+(-gameQuery.animations.offsety-gameQuery.animations.delta*gameQuery.frameTracker)+"px");
} else if(gameQuery.animations.type & $.gameQuery.ANIMATION_HORIZONTAL) {
$(this).css("background-position",""+(-gameQuery.animations.offsetx-gameQuery.animations.delta*gameQuery.frameTracker)+"px "+(-gameQuery.animations.offsety-this.gameQuery.multi)+"px");
}
}
});
}
return true;
},
/**
* Called periodically to refresh the state of the game.
*/
refresh: function() {
$.gameQuery.playground.find(".sprite").each(this.refreshSprite);
$.gameQuery.playground.find(".tileSet").each(this.refreshTilemap);
var deadCallback= new Array();
for (var i = this.callbacks.length-1; i >= 0; i--){
if(this.callbacks[i].idleCounter == this.callbacks[i].rate-1){
var returnedValue = this.callbacks[i].fn();
if(typeof returnedValue == 'boolean'){
// if we have a boolean: 'true' means 'no more execution', 'false' means 'execute once more'
if(returnedValue){
deadCallback.push(i);
}
} else if(typeof returnedValue == 'number') {
// if we have a number it re-defines the time to the next call
this.callbacks[i].rate = Math.round(returnedValue/$.gameQuery.refreshRate);
this.callbacks[i].idleCounter = 0;
}
}
this.callbacks[i].idleCounter = (this.callbacks[i].idleCounter+1)%this.callbacks[i].rate;
}
for(var i = deadCallback.length-1; i >= 0; i--){
this.callbacks.splice(deadCallback[i],1);
}
},
addAnimation: function(animation) {
if($.inArray(animation,this.animations)<0){
//normalize the animation rate:
animation.rate = Math.round(animation.rate/$.gameQuery.refreshRate);
if(animation.rate==0){
animation.rate = 1;
}
this.animations.push(animation);
}
},
addSound: function(sound){
if($.inArray(sound,this.sounds)<0){
this.sounds.push(sound);
}
},
registerCallback: function(fn, rate){
rate = Math.round(rate/$.gameQuery.refreshRate);
if(rate==0){
rate = 1;
}
this.callbacks.push({fn: fn, rate: rate, idleCounter: 0});
}
},
// This is a single place to update the underlying data of sprites/groups/tiles
update: function(descriptor, transformation) {
// Did we really receive a descriptor or a jQuery object instead?
if(!$.isPlainObject(descriptor)){
// Then we must get real descriptor
if(descriptor.length > 0){
var gameQuery = descriptor[0].gameQuery;
} else {
var gameQuery = descriptor.gameQuery;
}
} else {
var gameQuery = descriptor;
}
// If we couldn't find one we return
if(!gameQuery) return;
if(gameQuery.tileSet === true){
//then we have a tilemap!
descriptor = $(descriptor);
// find the tilemap offset relative to the playground:
var playgroundOffset = $.gameQuery.playground.offset();
var tileSetOffset = descriptor.offset();
tileSetOffset = {top: tileSetOffset.top - playgroundOffset.top, left: tileSetOffset.left - playgroundOffset.left};
// test what kind of transformation we have and react accordingly:
// Update the descriptor
for(property in transformation){
switch(property){
case "x":
//Do we need to activate/deactivate the first/last column
var left = parseFloat(transformation.left);
//Get the tileSet offset (relative to the playground)
var playgroundOffset = $.gameQuery.playground.offset();
var tileSetOffset = descriptor.parent().offset();
tileSetOffset = {top: tileSetOffset.top - playgroundOffset.top, left: tileSetOffset.left + left - playgroundOffset.left};
//activates the visible tiles
var firstColumn = Math.max(Math.min(Math.floor(-tileSetOffset.left/gameQuery.width), gameQuery.sizex),0);
var lastColumn = Math.max(Math.min(Math.ceil(($.gameQuery.playground[0].width-tileSetOffset.left)/gameQuery.width), gameQuery.sizex),0);
for(var i = gameQuery.firstRow; i < gameQuery.lastRow; i++){
// if old first col < new first col
// deactivate the newly invisible tiles
for(var j = gameQuery.firstColumn; j < firstColumn ; j++) {
$("#tile_"+descriptor.attr("id")+"_"+i+"_"+j).removeClass("active");
}
//and activate the newly visible tiles
for(var j = gameQuery.lastColumn; j < lastColumn ; j++) {
$("#tile_"+descriptor.attr("id")+"_"+i+"_"+j).addClass("active");
}
// if old first col > new first col
// deactivate the newly invisible tiles
for(var j = lastColumn; j < gameQuery.lastColumn ; j++) {
$("#tile_"+descriptor.attr("id")+"_"+i+"_"+j).removeClass("active");
}
//activate the newly visible tiles
for(var j = firstColumn; j < gameQuery.firstColumn ; j++) {
$("#tile_"+descriptor.attr("id")+"_"+i+"_"+j).addClass("active");
}
}
gameQuery.firstColumn = firstColumn;
gameQuery.lastColumn = lastColumn;
break;
case "y":
//Do we need to activate/deactivate the first/last row
var top = parseFloat(transformation.top);
//Get the tileSet offset (relative to the playground)
var playgroundOffset = $.gameQuery.playground.offset();
var tileSetOffset = descriptor.parent().offset();
tileSetOffset = {top: tileSetOffset.top + top - playgroundOffset.top, left: tileSetOffset.left - playgroundOffset.left};
//actvates the visible tiles
var firstRow = Math.max(Math.min(Math.floor(-tileSetOffset.top/gameQuery.height), gameQuery.sizey), 0);
var lastRow = Math.max(Math.min(Math.ceil(($.gameQuery.playground[0].height-tileSetOffset.top)/gameQuery.height), gameQuery.sizey), 0);
for(var j = gameQuery.firstColumn; j < gameQuery.lastColumn ; j++) {
// if old first row < new first row
// deactivate the newly invisible tiles
for(var i = gameQuery.firstRow; i < firstRow; i++){
$("#tile_"+descriptor.attr("id")+"_"+i+"_"+j).removeClass("active");
}
//and activate the newly visible tiles
for(var i = gameQuery.lastRow; i < lastRow; i++){
$("#tile_"+descriptor.attr("id")+"_"+i+"_"+j).addClass("active");
}
// if old first row < new first row
// deactivate the newly invisible tiles
for(var i = lastRow; i < gameQuery.lastRow; i++){
$("#tile_"+descriptor.attr("id")+"_"+i+"_"+j).removeClass("active");
}
//and activate the newly visible tiles
for(var i = firstRow; i < gameQuery.firstRow; i++){
$("#tile_"+descriptor.attr("id")+"_"+i+"_"+j).addClass("active");
}
}
gameQuery.firstRow = firstRow;
gameQuery.lastRow = lastRow;
break;
case "angle": //(in degree)
//TODO
break;
case "factor":
//TODO
break;
}
}
} else {
var refreshBoundingCircle = $.gameQuery.playground && !$.gameQuery.playground.disableCollision;
// Update the descriptor
for(property in transformation){
switch(property){
case "x":
if(refreshBoundingCircle){
gameQuery.boundingCircle.x = gameQuery.posx+gameQuery.width/2;
}
break;
case "y":
if(refreshBoundingCircle){
gameQuery.boundingCircle.y = gameQuery.posy+gameQuery.height/2;
}
break;
case "w":
case "h":
gameQuery.boundingCircle.originalRadius = Math.sqrt(Math.pow(gameQuery.width,2) + Math.pow(gameQuery.height,2))/2
gameQuery.boundingCircle.radius = gameQuery.factor*gameQuery.boundingCircle.originalRadius;
break;
case "angle": //(in degrees)
gameQuery.angle = parseFloat(transformation.angle);
break;
case "factor":
gameQuery.factor = parseFloat(transformation.factor);
if(refreshBoundingCircle){
gameQuery.boundingCircle.radius = gameQuery.factor*gameQuery.boundingCircle.originalRadius;
}
break;
}
}
}
},
/**
* Utility function that returns the radius for a geometry
*
* @param {object} elem DOM element
* @param {float} angle the angle in degrees
* @return {object} .x, .y radius of geometry
*/
proj: function (elem, angle) {
switch (elem.geometry){
case $.gameQuery.GEOMETRY_RECTANGLE :
var b = angle*Math.PI*2/360;
var Rx = Math.abs(Math.cos(b)*elem.width/2*elem.factor)+Math.abs(Math.sin(b)*elem.height/2*elem.factor);
var Ry = Math.abs(Math.cos(b)*elem.height/2*elem.factor)+Math.abs(Math.sin(b)*elem.width/2*elem.factor);
return {x: Rx, y: Ry};
}
},
//Utility function for collision of two objects
collide: function(elem1, offset1, elem2, offset2) {
// test real collision (only for two rectangles...)
if((elem1.geometry == $.gameQuery.GEOMETRY_RECTANGLE && elem2.geometry == $.gameQuery.GEOMETRY_RECTANGLE)){
var dx = offset2.x + elem2.boundingCircle.x - elem1.boundingCircle.x - offset1.x;
var dy = offset2.y + elem2.boundingCircle.y - elem1.boundingCircle.y - offset1.y;
var a = Math.atan(dy/dx);
var Dx = Math.abs(Math.cos(a-elem1.angle*Math.PI*2/360)/Math.cos(a)*dx);
var Dy = Math.abs(Math.sin(a-elem1.angle*Math.PI*2/360)/Math.sin(a)*dy);
var R = $.gameQuery.proj(elem2, elem2.angle-elem1.angle);
if((elem1.width/2*elem1.factor+R.x <= Dx) || (elem1.height/2*elem1.factor+R.y <= Dy)) {
return false;
} else {
var Dx = Math.abs(Math.cos(a-elem2.angle*Math.PI*2/360)/Math.cos(a)*-dx);
var Dy = Math.abs(Math.sin(a-elem2.angle*Math.PI*2/360)/Math.sin(a)*-dy);
var R = $.gameQuery.proj(elem1, elem1.angle-elem2.angle);
if((elem2.width/2*elem2.factor+R.x <= Dx) || (elem2.height/2*elem2.factor+R.y <= Dy)) {
return false;
} else {
return true;
}
}
} else {
return false;
}
}
},
//Mute (or unmute) all the sounds.
muteSound: function(muted){
for (var i = $.gameQuery.resourceManager.sounds-1 ; i >= 0; i --) {
$.gameQuery.resourceManager.sounds[i].muted(muted);
}
},
playground: function() {
return $.gameQuery.playground
},
/**
* Define a callback called during the loading of the game's resources.
*
* The function will recieve as unique parameter
* a number representing the progess percentage.
*/
loadCallback: function(callback){
$.gameQuery.resourceManager.loadCallback = callback;
}});
$.fn.extend({
/**
* Define the div which contains the game and initialize it.
* This could be called on any node it doesn't matter.
* The returned node is the playground node.
* This IS a destructive call
*/
playground: function(options) {
if(this.length == 1){
if(this[0] == document){ // Old usage check
throw "Old playground usage, use $.playground() to retreive the playground and $('mydiv').playground(options) to set the div!";
}
options = $.extend({
height: 320,
width: 480,
refreshRate: 30,
position: "absolute",
keyTracker: false,
disableCollision: false
}, options);
//We save the playground node and set some variable for this node:
$.gameQuery.playground = this;
$.gameQuery.refreshRate = options.refreshRate;
$.gameQuery.playground[0].height = options.height;
$.gameQuery.playground[0].width = options.width;
// We initialize the display of the div
$.gameQuery.playground.css({
position: options.position,
display: "block",
overflow: "hidden",
height: options.height+"px",
width: options.width+"px"
})
.append("<div id='scenegraph' style='visibility: hidden'/>");
$.gameQuery.scenegraph = $("#scenegraph");
//Add the keyTracker to the gameQuery object:
$.gameQuery.keyTracker = {};
// we only enable the real tracking if the users wants it
if(options.keyTracker){
$(document).keydown(function(event){
$.gameQuery.keyTracker[event.keyCode] = true;
});
$(document).keyup(function(event){
$.gameQuery.keyTracker[event.keyCode] = false;
});
}
}
return this;
},
/**
* Starts the game.
*
* Resources from the resource manager are preloaded if necesary
* Works only for the playground node.
* This is a non-destructive call
*/
startGame: function(callback) {
//if the element is the playground we start the game:
$.gameQuery.startCallback = callback;
$.gameQuery.resourceManager.preload();
return this;
},
/**
* Add a group to the scene graph
*
* Works only on the scenegraph root or on another group
* This IS a destructive call and should be terminated with end()
* to go back one level up in the chaining
*/
addGroup: function(group, options) {
options = $.extend({
width: 32,
height: 32,
posx: 0,
posy: 0,
posz: 0,
posOffsetX: 0,
posOffsetY: 0,
overflow: "visible",
geometry: $.gameQuery.GEOMETRY_RECTANGLE,
angle: 0,
factor: 1
}, options);
var newGroupElement = "<div id='"+group+"' class='group' style='position: absolute; display: block; overflow: "+options.overflow+"; top: "+options.posy+"px; left: "+options.posx+"px; height: "+options.height+"px; width: "+options.width+"px;' />";
if(this == $.gameQuery.playground){
$.gameQuery.scenegraph.append(newGroupElement);
} else if ((this == $.gameQuery.scenegraph)||(this.hasClass("group"))){
this.append(newGroupElement);
}
var newGroup = $("#"+group);
newGroup[0].gameQuery = options;
newGroup[0].gameQuery.boundingCircle = {x: options.posx + options.width/2,
y: options.posy + options.height/0,
originalRadius: Math.sqrt(Math.pow(options.width,2) + Math.pow(options.height,2))/2};
newGroup[0].gameQuery.boundingCircle.radius = newGroup[0].gameQuery.boundingCircle.originalRadius;
newGroup[0].gameQuery.group = true;
return this.pushStack(newGroup);
},
/**
* Add a sprite to the current node.
* Works only on the playground, the scenegraph root or a scenegraph group
* This is a non-destructive call
*/
addSprite: function(sprite, options) {
options = $.extend({
width: 32,
height: 32,
posx: 0,
posy: 0,
posz: 0,
posOffsetX: 0,
posOffsetY: 0,
idleCounter: 0,
currentFrame: 0,
frameIncrement: 1,
geometry: $.gameQuery.GEOMETRY_RECTANGLE,
angle: 0,
factor: 1,
playing: true,
factorh: 1,
factorv: 1
}, options);
var newSpriteElem = "<div id='"+sprite+"' class='sprite' style='position: absolute; display: block; overflow: hidden; height: "+options.height+"px; width: "+options.width+"px; left: "+options.posx+"px; top: "+options.posy+"px; background-position: "+((options.animation)? -options.animation.offsetx : 0)+"px "+((options.animation)? -options.animation.offsety : 0)+"px;' />";
if(this == $.gameQuery.playground){
$.gameQuery.scenegraph.append(newSpriteElem);
} else {
this.append(newSpriteElem);
}
//if the game has already started we want to add the animation's image as a background now:
if(options.animation){
// the second test is a fix for default background (https://github.com/onaluf/gameQuery/issues/3)
if($.gameQuery.resourceManager.running && options.animation.imageURL !== ''){
$("#"+sprite).css("background-image", "url("+options.animation.imageURL+")");
}
if(options.animation.type & $.gameQuery.ANIMATION_VERTICAL) {
$("#"+sprite).css("background-repeat", "repeat-x");
} else if(options.animation.type & $.gameQuery.ANIMATION_HORIZONTAL) {
$("#"+sprite).css("background-repeat", "repeat-y");
} else {
$("#"+sprite).css("background-repeat", "no-repeat");
}
}
var spriteDOMObject = $("#"+sprite)[0];
if(spriteDOMObject != undefined){
spriteDOMObject.gameQuery = options;
//Compute bounding Circle:
spriteDOMObject.gameQuery.boundingCircle = {x: options.posx + options.width/2,
y: options.posy + options.height/2,
originalRadius: Math.sqrt(Math.pow(options.width,2) + Math.pow(options.height,2))/2};
spriteDOMObject.gameQuery.boundingCircle.radius = spriteDOMObject.gameQuery.boundingCircle.originalRadius;
}
return this;
},
/**
* Remove the sprite on which it is called.
*
* This is here for backward compatibility but it doesn't do anything
* more than simply call .remove()
* This is a non-destructive call.
*/
removeSprite: function() {
this.remove();
return this;
},
/**
* Add a Tile Map to the selected element.
* This is a non-destructive call.
*/
addTilemap: function(name, tileDescription, animationList, options){
options = $.extend({
width: 32,
height: 32,
sizex: 32,
sizey: 32,
posx: 0,
posy: 0,
posz: 0,
posOffsetX: 0,
posOffsetY: 0
}, options);
var tileSet = $("<div class='tileSet' style='position: absolute; display: block; overflow: hidden;' />");
tileSet.css({top: options.posy, left: options.posx, height: options.height*options.sizey, width: options.width*options.sizex}).attr("id",name);
if(this == $.gameQuery.playground){
$.gameQuery.scenegraph.append(tileSet);
} else {
this.append(tileSet);
}
if($.isArray(animationList)){
var frameTracker = [];
var idleCounter = [];
var frameIncrement = [];
for(var i=0; i<animationList.length; i++){
frameTracker[i] = 0;
idleCounter[i] = 0;
frameIncrement[i] = 1;
}
tileSet[0].gameQuery = options
tileSet[0].gameQuery.frameTracker = frameTracker;
tileSet[0].gameQuery.animations = animationList;
tileSet[0].gameQuery.idleCounter = idleCounter;
tileSet[0].gameQuery.frameIncrement = frameIncrement;
tileSet[0].gameQuery.tileSet = true;
} else {
tileSet[0].gameQuery = options
tileSet[0].gameQuery.frameTracker = 0;
tileSet[0].gameQuery.frameIncrement = 1;
tileSet[0].gameQuery.animations = animationList;
tileSet[0].gameQuery.idleCounter = 0;
tileSet[0].gameQuery.tileSet = true;
}
if(typeof tileDescription == "function"){
for(var i=0; i<options.sizey; i++){
for(var j=0; j<options.sizex; j++){
if(tileDescription(i,j) != 0){
if($.isArray(animationList)){
// for many simple animation:
tileSet.addSprite("tile_"+name+"_"+i+"_"+j,
{width: options.width,
height: options.height,
posx: j*options.width,
posy: i*options.height,
animation: animationList[tileDescription(i,j)-1]});
var newTile = $("#tile_"+name+"_"+i+"_"+j);
newTile.removeClass("sprite");
newTile.addClass("tileType_"+(tileDescription(i,j)-1));
newTile[0].gameQuery.animationNumber = tileDescription(i,j)-1;
} else {
// for multi-animation:
tileSet.addSprite("tile_"+name+"_"+i+"_"+j,
{width: options.width,
height: options.height,
posx: j*options.width,
posy: i*options.height,
animation: animationList});
var newTile = $("#tile_"+name+"_"+i+"_"+j);
newTile.setAnimation(tileDescription(i,j)-1);
newTile.removeClass("sprite");
newTile.addClass("tileType_"+(tileDescription(i,j)-1));
}
}
}
}
} else if(typeof tileDescription == "object") {
for(var i=0; i<tileDescription.length; i++){
for(var j=0; j<tileDescription[0].length; j++){
if(tileDescription[i][j] != 0){
if($.isArray(animationList)){
// for many simple animation:
tileSet.addSprite("tile_"+name+"_"+i+"_"+j,
{width: options.width,
height: options.height,
posx: j*options.width,
posy: i*options.height,
animation: animationList[tileDescription[i][j]-1]});
var newTile = $("#tile_"+name+"_"+i+"_"+j);
newTile.removeClass("sprite");
newTile.addClass("tileType_"+(tileDescription[i][j]-1));
newTile[0].gameQuery.animationNumber = tileDescription[i][j]-1;
} else {
// for multi-animation:
tileSet.addSprite("tile_"+name+"_"+i+"_"+j,
{width: options.width,
height: options.height,
posx: j*options.width,
posy: i*options.height,
animation: animationList});
var newTile = $("#tile_"+name+"_"+i+"_"+j);
newTile.setAnimation(tileDescription[i][j]-1);
newTile.removeClass("active");
newTile.addClass("tileType_"+(tileDescription[i][j]-1));
}
}
}
}
}
//Get the tileSet offset (relative to the playground)
var playgroundOffset = $.gameQuery.playground.offset();
var tileSetOffset = tileSet.offset();
tileSetOffset = {top: tileSetOffset.top - playgroundOffset.top, left: tileSetOffset.left - playgroundOffset.left};
//activates the visible tiles
var firstRow = Math.max(Math.min(Math.floor(-tileSetOffset.top/options.height), options.sizey), 0);
var lastRow = Math.max(Math.min(Math.ceil(($.gameQuery.playground[0].height-tileSetOffset.top)/options.height), options.sizey), 0);
var firstColumn = Math.max(Math.min(Math.floor(-tileSetOffset.left/options.width), options.sizex), 0);
var lastColumn = Math.max(Math.min(Math.ceil(($.gameQuery.playground[0].width-tileSetOffset.left)/options.width), options.sizex), 0);
tileSet[0].gameQuery.firstRow = firstRow;
tileSet[0].gameQuery.lastRow = lastRow;
tileSet[0].gameQuery.firstColumn = firstColumn;
tileSet[0].gameQuery.lastColumn = lastColumn;
for(var i = firstRow; i < lastRow; i++){
for(var j = firstColumn; j < lastColumn ; j++) {
$("#tile_"+name+"_"+i+"_"+j).toggleClass("active");
}
}
return this.pushStack(tileSet);
},
/**
* Stop the animation at the current frame
*/
pauseAnimation: function() {
this[0].gameQuery.playing = false;
},
/**
* Resume the animation (if paused)
*/
resumeAnimation: function() {
this[0].gameQuery.playing = true;
},
/**
* Changes the animation associated with a sprite.
*
* WARNING: no checks are made to ensure that the object is really a sprite
* This is a non-destructive call
*/
setAnimation: function(animation, callback) {
var gameQuery = this[0].gameQuery;
if(typeof animation == "number"){
if(gameQuery.animation.type & $.gameQuery.ANIMATION_MULTI){
var distance = gameQuery.animation.distance * animation;
gameQuery.multi = distance;
if(gameQuery.animation.type & $.gameQuery.ANIMATION_VERTICAL) {
gameQuery.currentFrame = 0;
this.css("background-position",""+(-distance-gameQuery.animation.offsetx)+"px "+(-gameQuery.animation.offsety)+"px");
} else if(gameQuery.animation.type & $.gameQuery.ANIMATION_HORIZONTAL) {
gameQuery.currentFrame = 0;
this.css("background-position",""+(-gameQuery.animation.offsetx)+"px "+(-distance-gameQuery.animation.offsety)+"px");
}
}
} else {
if(animation){
gameQuery.animation = animation;
gameQuery.currentFrame = 0;
if (animation.imageURL !== '') {this.css("backgroundImage", "url('"+animation.imageURL+"')");}
this.css({"background-position": ""+(-animation.offsetx)+"px "+(-animation.offsety)+"px"});
if(gameQuery.animation.type & $.gameQuery.ANIMATION_VERTICAL) {
this.css("background-repeat", "repeat-x");
} else if(gameQuery.animation.type & $.gameQuery.ANIMATION_HORIZONTAL) {
this.css("background-repeat", "repeat-y");
} else {
this.css("background-repeat", "no-repeat");
}
} else {
this.css("background-image", "");
}
}
if(callback != undefined){
this[0].gameQuery.callback = callback;
}
return this;
},
/**
* Register a callback funnction
*
* This is a non-destructive call
*
* @param {Function} fn the callback function.
* @param {Number} rate time in milliseconds between calls.
*/
registerCallback: function(fn, rate) {
$.gameQuery.resourceManager.registerCallback(fn, rate);
return this;
},
/**
* Retrieve a list of objects in collision with the subject.
*
* if 'this' is a sprite or a group, the function will retrieve the list
* of sprites (not groups) that touch it. If 'this' is the playground,
* the function will return a list of all pair of collisioning elements.
* They are represented by a jQuery object containing a series of pairs.
* Each pair represents two objects colliding.(not yet implemented)
* For now all abject are considered to be boxes.
* This IS a destructive call and should be terminated with end() to go back one level up in the chaining
*/
collision: function(filter){
var resultList = [];
//retrieve 'this' offset by looking at the parents
var itsParent = this[0].parentNode, offsetX = 0, offsetY = 0;
while (itsParent != $.gameQuery.playground[0]){
if(itsParent.gameQuery){
offsetX += itsParent.gameQuery.posx;
offsetY += itsParent.gameQuery.posy;
}
itsParent = itsParent.parentNode;
}
// retrieve the gameQuery object
var gameQuery = this[0].gameQuery;
// retrieve the playground's absolute position and size information
var pgdGeom = {top: 0, left: 0, bottom: $.playground().height(), right: $.playground().width()};
// Is 'this' inside the playground ?
if( (gameQuery.boundingCircle.y + gameQuery.boundingCircle.radius + offsetY < pgdGeom.top) ||
(gameQuery.boundingCircle.x + gameQuery.boundingCircle.radius + offsetX < pgdGeom.left) ||
(gameQuery.boundingCircle.y - gameQuery.boundingCircle.radius + offsetY > pgdGeom.bottom) ||
(gameQuery.boundingCircle.x - gameQuery.boundingCircle.radius + offsetX > pgdGeom.right)){