Forums » Help » A module, requires, and circular dependancies question

Hi there, I'm from a C++ background and I think I am just having some difficulty understanding the module, requires, defines system. In my experience circular dependencies are a part of programming. two objects often need to know about one another. This is usually solved with #ifdef in the header file.

Ill explain my problem and hopefully that will make it clear. I made a win trigger and put it in my level. I am using check against to see when the player hits this trigger. (this part works) when he hits the trigger i wanted to go to the next level.

i am using a copy of Mike L.'s director plugin
http://impactjs.com/forums/impact-engine/new-director-level-manager-module

which i created inside my main game. I thought that if i made my game object a singleton that I would be able to require it in my win trigger create it and then go call
a wrapper function to go to the next level. but when i do this i get the following error

game.main (requires: game.states.main-game)
game.states.main-game (requires: game.levels.one)
game.levels.one (requires: game.entities.trigger-win)
game.entities.trigger-win (requires: game.states.main-game)

any help on this would be great. ill post all the relevant code in the following post

Main

ig.module( 
    'game.main' 
)
.requires(
    'game.states.main-game'             
)
.defines(function(){

ig.main( '#canvas', mainGame, 60, 320, 240, 2 );

});

Main game

ig.module( 
    'game.states.main-game' 
)
.requires(
    'impact.game',
    'impact.font',
    'plugins.camera',
    'game.levels.one',
    'game.levels.two',
    'impact.debug.debug'    
)
.defines(function(){

mainGame = ig.Game.extend({
    
    // Load a font
    font: new ig.Font( 'media/04b03.font.png' ),

    init: function() {
    
        if(ig.ua.mobile)
        {
            // BIND BUTTONS
            ig.input.bindTouch('#buttonLeft','left');
            ig.input.bindTouch('#buttonRight','right');
            ig.input.bindTouch('#buttonJump','up');
        }
        
        else 
        {
            // BIND KEYS
            ig.input.bind( ig.KEY.UP_ARROW, 'up' );
            ig.input.bind( ig.KEY.LEFT_ARROW, 'left' );
            ig.input.bind( ig.KEY.RIGHT_ARROW, 'right' );
        }
    
        // CAMERA
        this.camera = new Camera( ig.system.width/4, ig.system.height/3, 5 );
        this.camera.trap.size.x = ig.system.width/10;
        this.camera.trap.size.y = ig.system.height/3;
        this.camera.lookAhead.x = ig.ua.mobile ? ig.system.width/6 : 0;
        this.camera.debug = true;

        // LEVEL
        this.myDirector = new ig.Director(this, [LevelOne,  LevelTwo]);
    },
    
    staticInstantiate: function( ignoredFoo ) {
        if( mainGame.instance == null ) {
            return null;
        }
        else {
            return mainGame.instance;
        }
    },
    
    loadLevel: function( level ) {        
        this.parent( level );

        this.player = this.getEntitiesByType( EntityPlayer )[0];

        // Set camera max and reposition trap
        this.camera.max.x = this.collisionMap.width * this.collisionMap.tilesize - ig.system.width;
        this.camera.max.y = this.collisionMap.height * this.collisionMap.tilesize - ig.system.height;
        this.camera.set( this.player );
    },
    
    update: function() {
        // Update all entities and backgroundMaps
        this.parent();
        // Add your own, additional update code here
        this.camera.follow( this.player );
    },
    
    draw: function() {
        // Draw all entities and backgroundMaps
        this.parent();
        this.camera.draw();
    },
    
    nextLevel:function(){
        ig.log('NEXT LEVEL!');
        this.myDirector.nextLevel();
    }
    
});

});

Trigger

ig.module(
    'game.entities.trigger-win'
)
.requires(
    'game.entities.trigger',
    'game.states.main-game'
)
.defines(function(){
EntityTriggerWin = EntityTrigger.extend({
    size: {x: 16, y: 16},
    target: {},
    checkAgainst: ig.Entity.TYPE.A,
    
    _wmScalable: true,
    _wmDrawBox: true,
    _wmBoxColor: 'rgba(196, 255, 0, 0.7)',

 
    check: function( other ) {
        ig.log('checking for win');
        if (other instanceof EntityPlayer) {
                ig.log('check for win!');    
                var game = new mainGame();
                game.nextLevel()
        }
    }
});


});