Hi
I want to drag entity at run time.
Can anybody give me command for drag entity ?

Thanking you
Alpa

There is a code snippet in my modelNodePath demo
try to download it under my sig.

Hello,
Thank you very much for your kind respons and reply.
The download link you have provided is not responding. kindly reset the link so that i can download the file and please make sur that the link works for atleast next 24 hours.


Alpa

The link works, probably you need to register first
http://www.filefront.com/

Anyway, here is the part of the wdl :
Code:

---

function nodeEvent()
{
	if (event_type == event_release)
	{
		my.skin = 1;   // original skin
		
	}
	if (event_type == event_touch)
	{
		my.skin = 2;   // hilight skin
	}
	if (event_type == event_click)
	{
		my.skill13 = my.z;  // store original z-pos.
		
		// drag node
		while(mouse_left)
		{
			my.skin = 2;
	
			my.skill10 = mouse_pos.x;  // follow mouse x-pos
			my.skill11 = mouse_pos.y;  // follow mouse y-pos
			my.skill12 = camera.z;     // same as camera z-pos 
			vec_for_screen(my.skill10,camera);
			
			// update to world pos			
			my.x = my.skill10;
			my.y = my.skill11;
			my.z = my.skill12;

			my.flag1 = on;  // node has been moved, update offset.
			
			wait(1);
		}
		my.skin = 1;
		my.z = my.skill13;  // reset z-pos
			
  	}
}
	
action nodeLead
{
	lead = my;
 	my.passable = on;
 	my.enable_touch = on;
 	my.enable_release = on;
 	my.enable_click = on;
 	my.event = nodeEvent;
}

---

Dear,

Thank you for your kind co-operation,Your script is quite useful for me.
I am new to 3dgs.
Thanks
Alpa

Marry Christmas

I have take earth.mdl as drag entity.assine drag action.Now i take other entity sp.mdl which is invisible when game start in wed and define ENTITY* sp; in script.I have this code in drag action.

if (vec_dist(sp.x,my.x) < 75) // play with 50
{
my.INVISIBLE = on;
sp.INVISIBLE = off;
}

Its give me empty pointer error.Please help. here is full code

var video_mode = 8;
var video_depth = 32;

var speed = 10;
entity* lead;
entity* node;
entity* sp;

string snodeName;
string snodeNo;
var nodeNo = 0;

// NOTICE :
// get next node
// name your nodes in sequence in WED, such as
// node_1, node_2, node_3 etc...
/*function getNextNode()
{
nodeNo += 1;
nodeNo = cycle(nodeNo,1,7);
str_cpy(snodeName,"node_");
str_for_num(snodeNo,nodeNo);
str_cat(snodeName,snodeNo);
node = ent_for_name(snodeName);
}*/

function main()
{

level_load("drag.wmb");
wait(2);
// bird view
vec_set(camera.z,vector(0,0,500)); // 2000 = camera z-pos
camera.tilt = -90;

mouse_mode = 1;
mouse_range = 20000;

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);
}
}

function drag()
{
if (event_type == event_release)
{
my.skin = 1; // original skin
}
if (event_type == event_touch)
{
my.skin = 1; // hilight skin
}
if (event_type == event_click)
{
my.skill13 = my.z; // store original z-pos.

// drag
while(mouse_left)
{
my.skin = 1;

my.skill10 = mouse_pos.x; // follow mouse x-pos
my.skill11 = mouse_pos.y; // follow mouse y-pos
my.skill12 = camera.z; // same as camera z-pos
vec_for_screen(my.skill10,camera);

// update to world pos
my.x = my.skill10;
my.y = my.skill11;
my.z = my.skill12;

my.flag1 = on; // node has been moved, update offset.

wait(1);
}
my.skin = 1;
my.z = my.skill13; // reset z-pos

}
}

action nodeLead
{
lead = my;
my.passable = on;
my.enable_touch = on;
my.enable_release = on;
my.enable_click = on;
my.event = drag;
if(vec_dist(sp.x,my.x) < 75) // play with 50
{
my.INVISIBLE = on;
}
}


action sp_entity
{
Sp = my;
my.INVISIBLE = On;
// set(my,INVISIBLE); //giving syntex error
}

Thanks,
Well i change priority.I put earth action as second action.So my empty error has gone.
Actully i am trying snap entity(earth with sphere).when earth goes near to sp earth will invisible and sp will visible.In car action which condition you used,
i put it in earth action.But nothing is happend.Please help.


var video_mode = 8;
var video_depth = 32;

var speed = 10;

ENTITY* earth;

string snodeName;
string snodeNo;
var nodeNo = 0;

// NOTICE :
// get next node
// name your nodes in sequence in WED, such as
/*function getNextNode()
{
nodeNo += 1;
nodeNo = cycle(nodeNo,1,7);
str_cpy(snodeName,"node_");
str_for_num(snodeNo,nodeNo);
str_cat(snodeName,snodeNo);
node = ent_for_name(snodeName);
}*/

function main()
{

level_load("drag.wmb");
wait(2);
// bird view
vec_set(camera.z,vector(0,0,2000)); // 2000 = camera z-pos
camera.tilt = -90;

mouse_mode = 1;
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);
}
}

function drag()
{
if (event_type == event_release)
{
my.skin = 1; // original skin
}
if (event_type == event_touch)
{
my.skin = 1; // hilight skin
}
if (event_type == event_click)
{
my.skill13 = my.z; // store original z-pos.

// drag
while(mouse_left)
{
my.skin = 1;

my.skill10 = mouse_pos.x; // follow mouse x-pos
my.skill11 = mouse_pos.y; // follow mouse y-pos
my.skill12 = camera.z; // same as camera z-pos
vec_for_screen(my.skill10,camera);

// update to world pos
my.x = my.skill10;
my.y = my.skill11;
my.z = my.skill12;

my.flag1 = on; // node has been moved, update offset.

wait(1);
}
my.skin = 1;
my.z = my.skill13; // reset z-pos

}
}

action nodeLead
{
earth = my;
my.passable = on;
my.enable_touch = on;
my.enable_release = on;
my.enable_click = on;
my.event = drag;

/*if (vec_dist(my.x,earth.x)< 50) // play with 50
{
my.INVISIBLE = off;
}*/
}


action sp_entity
{
// sp = my;
my.INVISIBLE = On;
if (vec_dist(my.x,earth.x)< 50) // play with 50
{
earth.INVISIBLE = off;
my.INVISIBLE = Off;
}


}

It didn't work because the sp entity check the
distance only once when it load into the level.

You need to put the if statement inside a loop.

Code:

---

action sp_entity
{
  sp = my;
  my.INVISIBLE = On;

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

---

Thanks a lot,

I make what i want.In function main() i change
camera.tilt = -90; to camera.pan = 90;Because i want front view.
Then drag action cant work.
Why ?Does everything depends upon camers ?

Please help
Thanks