Yes, because vec_for_screen convert screen XY position to world XY position,
so there will be no problem in bird view. In front view, worldposition->x
is the screen depth, it's difficult to convert it from screenpos->x or
mouse_pos.x.

You may try to search the forum to find a workaround, or try my solution :

Code:

---

entity* ent;   // selected entity
var speed = 500;  // play with 500

function deSelect()
{
   if (ent != NULL)
   {
      ent = NULL;
   }
   mouse_pointer = 1;
}

function selectMe()
{
   if(event_type == event_click)
   {
      mouse_pointer = 0;
      ent = my;
		
      while(ent == my)
      {
	 my.x += mouse_force.y * speed * time_step;
	 my.y -= mouse_force.x * speed * time_step;
 	 wait(1);
      }
   }
}

action clickMe
{
   c_setminmax(my);
   sp = my;
   my.INVISIBLE = On;
   my.enable_click = on;
   my.event = selectMe;

   while(my)
   {
       if (vec_dist(my.x,earth.x)< 50) // play with 50
       {
           earth.INVISIBLE = On;
           my.INVISIBLE = Off;
       }
       wait(1);
    }
}

on_mouse_left = deSelect;  // put it outside any functions

---

Thank you very much and Happy new year.

I want to try your solution sir.
I am very sorry i cant understand.
Can you little explain please ?

Thanks

Which part you don't understand?
- Copy the above code in your wdl
- Setup your camera, camera movement code in function main
- Assign the action "clickMe" to all your entities that you want to move

When run the level, move the mouse pointer over an entity then left
clicking on it, the mouse pointer will be invisible, now you can move
your entity with your mouse (no need to hold down the mouse button).
Click the LMB again when you want to drop the entity.

You may also look at my Visual Level Editor(posted on Acknex Unlimited in demos section). It's open sourced, and it features dragging objects with mouse.

Hi,
Thanks for your kind co-opration Sir.

You define entity ent which i convert entity earth because my movable entity is earth.In action clickMe that while loop ,i used it in action sp_entity.
So i change little things and run the script.when i click on earth entity its move up and then dont move.Other thing is
sp entity visible when run script and when i click earth it invisible.I think sp_entity action cant work.
In function main() i change
vec_set(camera.z,vector(0,0,200)); // 2000 = camera z-pos
camera.pan = 90;

should i somewhere wrong ? Here is code :
//
// modelNodePath.wdl
//C-SCRIPT----------------****************************------------------------
// Alternate path finding/following method
// You need A7.04 WED to open the wmp file

var video_mode = 8;
var video_depth = 32;
var x;
var y;
var z;

ENTITY* earth;
ENTITY* sp;
function main()
{
level_load("drag.wmb");
wait(2);
// bird view
vec_set(camera.z,vector(0,0,200)); // 2000 = camera z-pos
camera.pan = 90;
mouse_mode = 2;
mouse_range = 10000;

while(1)
{
mouse_pos.x = mouse_cursor.x;
mouse_pos.y = mouse_cursor.y;
if (key_w){
camera.tilt += 2 * time_step;
}
if (key_s) {
camera.tilt -= 2 * time_step;
}
if (key_a) {
camera.pan += 2 * time_step;
}
if (key_d){
camera.pan -= 2 * time_step;
}
wait(1);
}
}

action sp_entity
{
while (earth==NULL) {wait(1);}
my.INVISIBLE = On;

while(my)
{
if (vec_dist(my.x,earth.x)< 20) // play with 50
{
earth.INVISIBLE = On;
my.INVISIBLE = Off;
}
else
{
earth.x = x;
earth.y = y;
earth.z = z;
}
wait(1);
}
}

//\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

var speed = 500; // play with 500

function deSelect()
{
if (earth != NULL)
{
earth = NULL;
}
mouse_pointer = 1;
}

function selectMe()
{
if(event_type == event_click)
{
mouse_pointer = 1;
earth = my;

while(earth == my)
{
my.x += mouse_force.y * time_step;
my.y -= mouse_force.x * time_step;
wait(1);
}
}
}

action clickMe
{
c_setminmax(my);
sp = my;
//my.INVISIBLE = On;
my.enable_click = on;
my.event = selectMe;
}

on_mouse_left = deSelect; // put it outside any functions

Hello Harry,

Please upload your level (.wmp and .wdl) and describe what
you exactly to achieve more clearly, then I can help you to
complete your code and send it back to you.

Unless you're familiar with c-script, modify any part of the
code that you don't understand didn't help.

x,y,z are preserved engine variables, better don't use it as
global and local var.

Thank you sir,

I am new to 3dgs and using Lite-C.Just complete lite-C work-shop.Here i attech.

http://files.filefront.com/snapcdrar/;9375932;/fileinfo.html

For now the camera is on top view. The camera is only tilting but i wanted it to pan in all directions.
In function main you use line : camera.tilt = -90;that i want to change as
camera.pan = 90;.When user use arrow key ,camera should pan.

Thanks
Alpa

Here is the new level + wdl : drag_new

Hope that solved all your problem.

Thank you very much for kind co-operation Sir.

Earth entity moves along the walls. It can’t in touch with sp entity.
I am not able to explain properly to you what i want to do. So I attach exe here with which is made in director 3d.

I want to do that with game studio.

In drag_new (which was you sand ) when I use arrow key its rotate properly. This pan effect I want in that level which I send previously.

http://files.filefront.com/24+heartrar/;9393803;/fileinfo.html

Please help me.
Thanks

The test level works fine here, you've to move your
mouse slowly to drag it close to the sp_entity.

If you need someone to write a program just like
your demo, you may post it on the Job Offer forum.

Good luck!

EDIT
----
Just some hints : c_trace work different than modelsunderray in
Director3D, it return the closest model only.