Hi, I've implemented a simple car physic using the example from the manual:

Code:
function simple_car(){
  ENTITY* car = ent_create("car.mdl",vector(100,-200,40),NULL); 
  pXent_settype(car,PH_RIGID,PH_BOX);
  ENTITY* FLwheel = ent_create("wheel.mdl",vector(168,-170,17),NULL);
  ENTITY* FRwheel = ent_create("wheel.mdl",vector(168,-230,17),NULL);
  ENTITY* BLwheel = ent_create("wheel.mdl",vector(39,-170,17),NULL);
  ENTITY* BRwheel = ent_create("wheel.mdl",vector(39,-230,17),NULL);
  pXcon_add ( PH_WHEEL, FLwheel, car, 0 );
  pXcon_add ( PH_WHEEL, FRwheel, car, 0 );
  pXcon_add ( PH_WHEEL, BLwheel, car, 0 );
  pXcon_add ( PH_WHEEL, BRwheel, car, 0 );//drive the car          while(1)  {
    pXcon_setwheel (FLwheel,-5,0,0);
    pXcon_setwheel (FRwheel,-5,0,0); // steer to the right
    pXcon_setwheel (BLwheel,0,500,0);    pXcon_setwheel (BRwheel,0,500,0);
    wait(1);  }}


My problem is, that the car does not stick to the ground and "falls" on the side quite often so that I can't continue driving. Any ideas how to avoid that?

Terrain tutorial using Shade-C
amBx-Plugin - use amBx in GameStudio
3D Tower Defence