obstacle.js

ig.module(
    'game.entities.container'
    )
.requires(
    'impact.entity',
    'game.helpers.geometry'
)
.defines(function(){

    EntityObstacle = ig.Entity.extend({
        type: ig.Entity.TYPE.B,
        checkAgainst: ig.Entity.TYPE.A,
        check:function(unit){
            if(this.unitCollision(unit)){
                this.unitColliding = true;
            }
        },
        unitCollision: function(unit){
            var boundingBoxPolygon = unit.getBoundingBoxPolygon();
            for(var i = 0; i < 4; i++){
                if(Geometry.pointInPolygon(boundingBoxPolygon[i], this.collisionArea)){
                    return true;
                }
            }
            return false;
        },
        unitColliding: false,
        name : null,
        footprint: [
            {
                x: 0,
                y: 187
            },
            {
                x: 112,
                y: 299
            },
            {
                x: 196,
                y: 272
            },
            {
                x: 84,
                y: 160
            }
        ],
        collisionArea: [
            {
                x: 0,
                y: 187
            },
            {
                x: 112,
                y: 299
            },
            {
                x: 196,
                y: 272
            },
            {
                x: 196,
                y: 192
            },
            {
                x: 196,
                y: 192
            },
            {
                x: 84,
                y: 80
            },
            {
                x: 0,
                y: 108
            },
        ],
        offset: {
            x: 0,
            y: 80
        },
        size: {
            x: 197,
            y: 220
        },
        // zIndex is deturmined by adding pos.y and zIndexOffset
        zIndexOffset: -20,

        init: function( x, y, settings ) {
            this.animSheet = new ig.AnimationSheet( 'media/obstacles-large.png', 200, 300 );
            this.parent( this.pos.x, this.pos.y, settings );

            this.addAnim( 'idle', 1, [0] );
            this.currentAnim = this.anims.idle;

            this.zIndex = this.pos.y + this.zIndexOffset;

            ig.game.sortEntitiesDeferred();

        },
        update: function() {
            this.currentAnim.alpha = 1;

            this.parent();
            this.unitColliding = false;
        }

    });

});