// The following example shows how to use events for an object that flies ahead until it collides with a block or entity.
// The event function then plays a collision sound and lets the object ricochet from the surface. 

function bounce_event() 
{
  switch (event_type)
  {
    case EVENT_BLOCK:
      ent_playsound(my,whamm,50);   
      vec_to_angle(my.pan,bounce); // change direction
      return;
    case EVENT_ENTITY: 
      ent_playsound(my,boingg,50);  // play a different sound
      vec_to_angle(my.pan,bounce); // change direction
      return;
  }
}  

action bounceball() 
{
  my.emask |= (ENABLE_BLOCK | ENABLE_ENTITY); // make entity sensitive for block and entity collision
  my.event = bounce_event;
  while(1)
  {
    c_move(me,vector(5*time_step,0,0),nullvector,0); // move ahead until obstacle is hit
    wait(1);
  }
}


 

action balla()
{
   my.emask |= ENABLE_BLOCK;
   my.event = bounce_event;
   while (!key_space) {wait(1);}
   while (event_type != EVENT_BLOCK)
   {
      c_move(my, vector(0, 4 * time_step, 0), nullvector, GLIDE);
      wait(1);
      if(my==NULL)   break;   //just in case entity is destroyed alsewhere
   } 
}