{ "physics": { "collisionGroups": [ { "index": 1, "name": "PLAYER" }, { "index": 2, "name": "ENEMY" }, { "index": 3, "name": "WEAPON" }, { "index": 4, "name": "XP" } ], "collisionMatrix": { "0": 0, "1": 20, "2": 10, "3": 4, "4": 2 } }, "general": { "designResolution": { "width": 640, "height": 960, "fitHeight": true } } }