Hey guys,
I was wondering what the best method is for making a floating object (a really high one) scan for the ground below it and return the exact number (on a z axis) of where the ground is. I am thinking of making an RTS and having a really high pointer that will move around with the mouse. I want this pointer to scan for the ground and place an object there (building, tree, etc).
Hope to hear from someone soon.
-Bright

Hey Bright,

Kannst dir den Code mal anschauen, den habe ich gemacht, läuft soweit, sry habe gerade nicht wirklich Zeit sonst haette ich dir das wichtigste raus genommen!

Code:

---

string Gebaeude = geb1.mdl;



bmap Gebaeude_Selected_bmap = <Metallmine_sel.bmp>;
bmap explode_bmap 			 = <explode.bmp>;
bmap Slider_bmap			  	 = <Slider.bmp>;
bmap Slider_HG_bmap      	 = <Slider_HG.bmp>;

font arial_font =	"cour",0,16;

Panel Gebaeude_Selected_pan
{
	bmap = Gebaeude_Selected_bmap;
	pos_x = 600;
	pos_y = 200;
	Layer=5;
	flags =refresh,overlay;
	button=100,60,explode_bmap,explode_bmap,explode_bmap,explode,null,null;

}

Panel Slider
{
	bmap Slider_HG_bmap;
	pos_x=600;
	pos_y=200;
	VSLIDER = 6,10,230,slider_bmap,0,10,ressis_prozent;
	Digits = 100,100,3,arial_font,1,ressis_prozent;
	Layer=6;
	flags =refresh;	
}

	


string Mspawn_str = "Geeignetes Gebiet um die Metallmine zu platzieren";

var mouse_range =  1000000;

font arial_font3 =	"cour",0,14;

text Metallmine_Spawn	// Textobjekt definieren
{
	font = arial_font3;
	Red = 255;
	Green= 255;
	Blue= 255;
	layer = 2;
	pos_x = 385;
	pos_y = 612;
	layer=2;
	strings = 5; // reserviere 5 string pointer...
	string = Mspawn_str; // ...denen existierende Strings zugewiesen werden.
	flags = narrow;
}

function highlight_sprite()
{

	if (event_type == event_touch)
	{
		//my.ambient += 100; // highlight the unit
		Metallmine_Spawn.visible=on;	
	}
	if(event_type == event_release)
	{
		Metallmine_Spawn.visible=off;
		my.ambient = 0; 
	}

}

entity* terrain_ent;

action spawn_sprite_action
{
	
	my.enable_touch = on;
	
	my.enable_release = on;

	my.event = highlight_sprite;	
	
	my.polygon = on;
	terrain_ent = my;
	my.passable = off;
	my.transparent=on;
	my.alpha=20;
	my.flare=on;
	my.bright=off;
	my.ambient=0;
	my.light=on;
	my.red=236;
	my.green=118;
	my.blue=0;
	wait(1);

}

Function Gebaeude_Clicked
{
	if (EVENT_TYPE == EVENT_click)
	{
				//If (my.selected_Geb==1)
			//{
			
				my.ambient=40;
				my.unlit=on;
				Gebaeude_Selected_pan.visible=on;
				Slider.visible=on;
				selected_ent = my;

			//}
	}
}


Action Gebaeude_Function
{
	my.ENABLE_click = ON; // mache Entity sensitiv für Klicks
	
	my.event = Gebaeude_Clicked;
	
	while(1)
	{
		if(mouse_left == on && mouse_ent != my && key_ctrl != on)	//wenn geklickt wurde, aber die maus nicht auf mir ist, geh aus selektier modus raus.
		{
			Health_pan.visible = off;  // andernfalls schalte es ab
			Kreuzer_unit.visible=off;
			my.ambient = 0;
			Gebaeude_Selected_pan.visible=off;
			Slider.visible=off;
			
			
			my.selected = 0;
		}
			
			wait(1);
		}
		vec_set(temp,my.x);
		if (vec_to_screen(temp,camera)) // falls auf dem Bildschirm sichtbar
		{ 
			Health_pan.pos_x = temp.x; // plaziere die Healthbar
			Health_pan.pos_y = temp.y;
		}		
		wait(1);
	}

}
}

Var Spawned;				//Variable, damit nur einmal die Metallmine platziert werden kann

Function Spawn_Gebaeude()
{
	var trace_start[3];
	var trace_end[3];
	trace_start.x=mouse_pos.x;
	trace_start.y=mouse_pos.y;
	trace_start.z=1;
	vec_for_screen(trace_start,camera);
	trace_end.x=mouse_pos.x;
	trace_end.y=mouse_pos.y;
	trace_end.z = 100000;
	vec_for_screen(trace_end,camera);
	
	
	c_trace(camera.x,trace_end,null);
	
	if(you)			//wenn ich eine entity getroffen habe wird "you" gesetzt.
	{
		if(you.selected == off)
		{
				if(you == terrain_ent && Metallmine==1 && Spawned==0)
		{
			vec_for_vertex(temp,terrain_ent,hitvertex);
			you=ent_create(Gebaeude,target,Gebaeude_Function);
			
			you.unlit=on;
			spawned+=1;
			
			
			
			
			
		}	
		}

		else
		{
			wait(1);
		}
	}
	
}


ON_MOUSE_LEFT = Spawn_Gebaeude;

---

cYa Sebastian

or chceck my click & go script and create something at mouse position and place it with mouse_left

Code:

---

action actFloating
{
  var vPos;
  my.z = 1000;
  while(!mouse_left)
  {
    /* add your "follow the mouse" function here */
    c_trace(my.x, vector(my.x, my.x, my.z - 2000), ignore_me | ignore_passable);
    vec_set(vPos, target); /* not sure about this. i think "target" does only exist in it's current frame, so i just save it in a temp vector */
    wait(1);
  }
  vec_set(my.x, vPos.x); /* set my position to the hitted spot */
  return;
}

---

just some fast code oO if i missed what you need, just tell me