Forums » Help » Cannot get an entity to pass through another

Hey guys, I have tried every combination of collision detection there is yet the two entities always collide, any thoughts? I need the player to pass through the "tire" The player is box 2d and the tire is not.

ig.module(
	'game.entities.player'
)
.requires(
	'plugins.box2d.entity',
	'plugins.box2d.entities.polygon'
)
.defines(function() {

	EntityPlayer = ig.Entity.extend({
		size: {x: 160, y:122},
		name: 'player',
		health: 100,
		//gravity: 10,
		animSheet: new ig.AnimationSheet('media/new/mater3.png', 160, 122 ),
		type: ig.Entity.TYPE.A,
        checkAgainst: ig.Entity.TYPE.NONE,
        collides: ig.Entity.COLLIDES.PASSIVE,

		gravityFactor: 3,

		isFixedRotation: true,

		maxVel: {x:375},

		allowSleep: false,

		canJump: true,

		onRamp: false,
		
		VELX: 100,

		init: function(x, y, settings) {
			this.parent( x, y, settings );
			this.addAnim( 'idle', 0.08, [0,1] );
			this.addAnim( 'fly', 0.07, [1]) ;
			this.addAnim( 'jump', 0.07, [2]) ;

			this.body.m_mass = 450;

			this.currentVelX = this.VELX;
		},

		update: function() {
			this.parent();
			//this.body.SetXForm(this.body.GetPosition(), 0);

			var _a = this.body.GetAngle();


			$('.debug').text(this.vel.x);

			 if (this.onRamp) {

				// move left or right
				if ( ig.input.state('left') ) {
					// this.vel.x = -200;
					// this.flip = true;
					this.body.SetAngle(this.body.GetAngle()-0.05);
				}
				else if ( ig.input.state('right') ) {				
					// this.vel.x += 10;
					// this.flip = false;
					this.body.SetAngle(this.body.GetAngle()+0.05);
				}
			}
			// else {
			//   	this.vel.x += this.currentVelX;
			// }


			this.vel.x += this.currentVelX;
			

			

			// if (this.canJump) {
			// 	this.currentVelX = this.currentVelX +  1;
			// }




			if ( ig.input.pressed('jump') ) {
				console.log('try jump');
				//if (!this.standing) {
				if (this.pos.y > 259 && this.canJump === true) {
					this.vel.y = -600;
					console.log('jump');
				}
			}

			if (ig.input.pressed('down')) {
				console.log('down');

				this.vel.y = 600;
			}


			if (this.pos.y > 259 || this.onRamp) {
				this.currentAnim = this.anims.idle;
			}
			else {
				this.currentAnim = this.anims.jump;
			}

			this.currentAnim.flip.x = this.flip;
		},


		slowDown: function() {
			this.vel.x = 100;
			this.currentVelX = 10;

			this.canJump = false;

			console.log('slow down');
		},

		// for tumbleweed (don't disable jump)
		slowDown2: function() {
			this.vel.x = 100;
			this.currentVelX = 10;
		},

		speedUp: function() {
			this.currentVelX = this.VELX;

			this.canJump = true;

			console.log('speed up');
		},

		rampJump: function() {
			console.log('ramp jump');
			this.onRamp = true;

			this.isFixedRotation = false;
			this.currentVelX = 375;
		},

/*
		updateTilt: function() {
			this.currentAnim.angle = 240;
		},

		debugTilt: function(angle) {
			this.angle = angle;
			this.currentAnim.angle = angle;
			//console.log(this.currentAnim.angle);
		},*/

		kill: function() {
			ig.game.increaseScore(100);
			ig.game.saveScore();
		}

	});

});





ig.module(
  'game.entities.tire'
)
.requires(
  'impact.entity'
)
.defines(function(){
  EntityTire = ig.Entity.extend({
    size: {x: 75, y: 44},
    name: 'tire',

    gravityFactor: 0,

    animSheet: new ig.AnimationSheet( 'media/new/tire.png', 75, 44),

    bounciness: 1,
	type: ig.Entity.TYPE.NONE,
    checkAgainst: ig.Entity.TYPE.NONE,
    collides: ig.Entity.COLLIDES.NEVER,

    init: function( x, y, settings ) {
      this.addAnim( 'idle', 1, [0] );
      this.parent( x, y, settings );

    }

  });
});

The player is box 2d and the tire is not.

First of all, I recommend sticking to a single physics engine. Sounds like you want Box2D, so both entities should be Box2D entities.

Then, you can use iforce2d's solution to prevent certain entities from colliding with one another.

He says:

you could do contact->SetEnabled(false) in the PreSolve of the collision listener, depending on what it collided with

If you are using Box2D Sugar, then that would look something like this:

EntityPlayer = ig.Entity.extend({
    ...
    preSolve: function(other, contact, oldManifold) {
        // Touching something?
        if(contact.IsTouching()) {
            // Is it an entity?
            if(other) { 
                // Is the entity a tire?
                if(other instanceof EntityTire) {
                    // Don't resolve this collision.
                    contact.SetEnabled(false);
                }
            }
        }
    },
    ...
});

You may need to do something similar for your tire entity too.