Tip of the Week #10: New Pathfinding Solution!

action enemy()
{
	while(1)
	{
		VECTOR temp;
		hpf_region_get_target(temp,my,player.x,HPF_XYZ);
		turn to temp;
		move to temp;
		wait(1);
	}
}

action FollowPlayer()
{
	while(!player)
	wait(-1);
	
	vec_for_min(AIfeet, me); //assigning the lowest position of the model to the vector named "AIfeet"
	
	c_setminmax(my);
	vec_fill(my.min_x,-24);
	vec_fill(my.max_x,24);
	vec_set(PlayerTarget,my.x);
			
	my.skill10 = hpf_path_get_max_nodes(my);
	my.group = 2; // ignore other enemy units when doing pathfinding and visibility calculations (with IGNORE_PUSH)
	
	while(1)
	{
		if(key_t)
		vec_set(PlayerTarget, vector(player.x, player.y, player.z));
		
		my.red = 0;
	 	my.ambient = 0;
	 	my.lightrange = 0;
		
		if(!key_ins) hpf_region_get_target(temp,my,PlayerTarget,HPF_XYZ); //using insert key for dummy if statement
		else vec_set(temp, PlayerTarget);
		hpf_path_draw(my,COLOR_GREEN);
		temp.z = my.z;
		if(vec_dist(temp,my.x) > 16)
		{
			my.red = 100;
	 		my.ambient = 100;
	 		my.lightrange = 100;
	 		
			vec_diff(temp2,temp,my.x);
			vec_to_angle(temp,temp2);
			my.pan += ang(temp.x-my.pan)*0.25*time_step;
			result = c_move(me,vector(maxv(10-0.1*abs(ang(temp.x-my.pan)),0)*time_step,0,0), vector(0, 0, -AIdistancedown),IGNORE_PASSABLE | GLIDE);
			my.skill1 += result;
			my.skill1 %= 100;
			ent_animate(me,"run",my.skill1,ANM_CYCLE);
			
				
	 		//gravity codes		
	 		if(c_trace(my.x, vector(my.x,my.y,my.z-10000), IGNORE_ME|IGNORE_PASSABLE |USE_BOX) > 0)
	   	    AIdistancedown = my.z + AIfeet.z - target.z;
	     	else
	    	AIdistancedown = 0;
	   	
	    	if(AIdistancedown > 0)
	    	AIdistancedown = clamp(AIdistancedown, 0, accelerate(mygravity, 9.8, 0.1)); //0.1 is friction, accelerate "mygravity" by 9.8
	    	//clamp limits distance down to lower limit 0 and upper limit accelerate(mygravity, 9.8, 0.1)
	    	else
	    	{mygravity = 0; vec_set(AILastSolidGround,vector(my.x,my.y,my.z));}
	    	//if Mon is on ground, set gravity to zero and store position of mon on ground
		}
		
		var i;
		for(i = 1; i <= my.skill10; i++)
		{
			path_getnode(my,i,temp,NULL);
			if(vec_to_screen(temp,camera))
			{
				draw_text(str_for_num(NULL,i),temp.x-9,temp.y-9,vector(50,50,50));
				draw_text(str_for_num(NULL,i),temp.x-10,temp.y-10,COLOR_RED);
			}
		}
	
		
		wait(1);
	}
}

str_clip(str_tmp,3);
str_printf(str_tmp,"path%s",_chr(str_tmp));
if(!path_set(ent,str_tmp)) error("HPF_REGION_GET_TARGET: Path to region does not exist!");

var hpf_path_get_target_collision = 1;

var hpf_path_get_target_collision = 0;