// Not exactly correct for the tileset since there are more possible floor tiles, but this will
// do for the example.
this.groundLayer.setCollisionByExclusion([-1, 6, 7, 8, 26]);

this.player = new Player(this, map.widthInPixels / 2, map.heightInPixels / 2);

// Watch the player and layer for collisions, for the duration of the scene:
this.physics.add.collider(this.player.sprite, this.groundLayer);