default.json

{
  "meterSize": 100,
  "speed": 1,
  "gravityX": 0,
  "gravityY": 9.81,
  "cameraFollow": true,
  "objects": {
    "obj1": {
      "type": "ball",
      "x": 50,
      "y": 200,
      "vx": 0,
      "vy": -200,
      "radius": 20,
      "color": "#0000FF",
      "mass": 10,
      "freeze": false,
      "restitution_coef": 0.8,
      "collision": true
    },
    "border1": {
      "type": "ball",
      "x": 0,
      "y": 800,
      "vx": 0,
      "vy": 0,
      "radius": 400,
      "color": "#FF0000",
      "mass": 100,
      "freeze": true,
      "restitution_coef": 0.5,
      "collision": true
    },
    "border2": {
      "type": "ball",
      "x": 800,
      "y": 800,
      "vx": 0,
      "vy": 0,
      "radius": 400,
      "color": "#FF0000",
      "mass": 100,
      "freeze": true,
      "restitution_coef": 0.5,
      "collision": true
    }
  }
}