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////////////////////////////////////////////////////////////////////

string work01_wmb = <yourlevel.wmb>;

entity* don_rob_ent;
entity* up_rob_ent;

function moving_robo_func();
function robo_player();

////////////////////////////////////////////////////////////////////
function main()
{
  fps_max = 50;
  level_load (work01_wmb);
  wait(5);
  ent_create ("dn_robo.mdl", vector(0,0,0), robo_player);   
}

function robo_player()
{
  var down_point_tmp;
  don_rob_ent = me;
  my.passable = on;  /// Avoid interference when moving!!
	
  //////////////////////////////
  // create up part
  vec_for_vertex(down_point_tmp,me,29);	
  up_rob_ent = ent_create("up_robo.mdl",down_point_tmp,NULL);
  //////////////////////////////
  moving_robo_func();
  //////////////////////////////
  // place camera
  camera.tilt = -15; // look down at the player, play with this value
  while(1)
  {
	wait(time_step);
	camera.x = me.x - 350 * cos(me.pan); // 250 = distance between the player and the camera, play with this value
	camera.y = me.y - 350 * sin(me.pan); // use the same value here
	camera.z = me.z + 150; // place the camera above the player, play with this value
	camera.pan = me.pan; // the camera and the player have the same pan angle
   }	
}

function moving_robo_func()
{
  var anim_percentage; // animation percentage
  var movement_speed; // player's movement speed
  var distance_to_ground; // the distance between player's origin and the ground
  var down_point_tmp;
  
  while (1)
  {
	my.pan += 6 * (key_a - key_d) * time; // rotate the player using the "A" and "D" keys
	vec_set (temp, my.x); // copy player's position to temp
	temp.z -= 5000; // set temp.z 5000 quants below player's origin
	distance_to_ground = c_trace (my.x, temp.x, ignore_me | use_box | ignore_you);
		
	movement_speed.x = 5 * (key_w - key_s) * time_step; // move the player using "W" and "S"
	movement_speed.y = 0; // don't move sideways
	movement_speed.z = - (distance_to_ground - 100); // 17 = experimental value
	movement_speed.z = max (-35 * time, movement_speed.z); // 35 = falling speed
		
	// move one entity
	c_move (don_rob_ent, movement_speed, nullvector, glide); // move the player
	// you need to get the position of this vertex every time
	vec_for_vertex(down_point_tmp,don_rob_ent,29);	
	// you need to set the position of this entity every time
	 // reposition 'p_rob_ent' using the above location
   	vec_set (up_rob_ent.x, down_point_tmp.x); 

	if (key_w && key_s) // the player is moving?
	{
	  ent_animate(don_rob_ent, "walk", anim_percentage, anm_cycle); // play the "walk" animation
	}
	else // the player is not moving?
	{ 
	  ent_animate(don_rob_ent, "stand", anim_percentage, anm_cycle); // play the "stand" animation
	}
	anim_percentage += 5 * time; // 5 = animation speed
	wait (1);
  }
}
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