Line data    Source code

       1             : function MotionBallScripted() {}
       2             : 
       3           0 : MotionBallScripted.prototype.Schema =
       4             :         "<a:component type='test'/><empty/>";
       5             : 
       6           0 : MotionBallScripted.prototype.Init = function() {
       7           0 :         this.speedX = 0;
       8           0 :         this.speedZ = 0;
       9             : };
      10             : 
      11           0 : MotionBallScripted.prototype.OnUpdate = function(msg) {
      12           0 :         var dt = msg.turnLength;
      13             : 
      14           0 :         var cmpPos = Engine.QueryInterface(this.entity, IID_Position);
      15           0 :         var cmpTerrain = Engine.QueryInterface(SYSTEM_ENTITY, IID_Terrain);
      16             : 
      17           0 :         var pos = cmpPos.GetPosition();
      18             : 
      19           0 :         var normal = cmpTerrain.CalcNormal(pos.x, pos.z);
      20             : 
      21           0 :         var g = 10;
      22           0 :         var forceX = normal.x * g;
      23           0 :         var forceZ = normal.z * g;
      24             : 
      25           0 :         this.speedX += forceX * dt;
      26           0 :         this.speedZ += forceZ * dt;
      27             : 
      28           0 :         var drag = 0.5; // fractional decay per second
      29           0 :         this.speedX *= Math.pow(drag, dt);
      30           0 :         this.speedZ *= Math.pow(drag, dt);
      31             : 
      32           0 :         cmpPos.MoveTo(pos.x + this.speedX * dt, pos.z + this.speedZ * dt);
      33             : };
      34             : 
      35           0 : Engine.RegisterComponentType(IID_Motion, "MotionBallScripted", MotionBallScripted);