How to use Random numbers in texture animation?

Hi Hi`s..

This is the standard animation script for a texture/ frame animation.:

llSetTextureAnim( ANIM_ON | LOOP , ALL_SIDES, 5, 5, 0, 25, 15);

5 by 5 frames, start frame top left = 0, frame end = 25 , 15 is the time.

can i substitute those numbers for a range defined previously?, ie.. instead of a fixed frame start.. say before this point in the script A= 10 for example.. and B = random number between 0 and A and put B in the line?

so the line would look like..


llSetTextureAnim( ANIM_ON | LOOP , ALL_SIDES, 5, 5, B, 25, 15);


then if possible to be able to have A and B to be defined live by action, ie an avatar does something that changes A or B.. or touch by an avatar or me...?

so.. the script runs... A is defined.. perhaps A might be the maximum time for example.. and B is a random time number selected automatically every script cycle


OR like i said, the frame start point.. end point..

Does SL use user defined globals.. ie values that are available anywhere?

// anim SMOOTH Script
// By Doug Linden (I think)
//

// If you are interested in scripting, check out
// the Script Help under the help menu.

// The double slash means these lines are comments
// and ignored by the computer.

// All scripts have a default state, this will be
// the first code executed.
default
{
// state_entry() is an event handler, it executes
// whenever a state is entered.
state_entry()
{
// llSetTextureAnim() is a function that animates a texture on a face.
llSetTextureAnim(ANIM_ON | SMOOTH | LOOP, ALL_SIDES,0,0,0,0, 0,0.20);
// animate the script to scroll across all the faces.
}


}




//** Script by Vik Bethune ****
//** Created: 12/12/2006 ****
//** Updated 27/12/2006 ****
//** Copyright (C) 2006 ****
//******************************************************



float gSpeed = -0.01; // Speed (rate) of the texture
integer gChannel = 12; //Talk channel

float MIN_SPEED = 0.001;
float MAX_SPEED = 0.02;

integer SIDE = ALL_SIDES; // Which side of prim to animate, can use ALL_SIDES
float MOVEMENT = 1; // MOVEMENT(length) How far the texture moves
integer X_FRAMES = 1; // In Standard Mode - defines the number of Horizontal frames or pieces to subdivide the texture into
integer Y_FRAMES = 1; // In Standard Mode -defines the number of Vertical frames or pieces to subdivide the texture into
float START = 1.0; // specifies the frame number to begin animating from (frames are numbered from left to right, top to bottom, starting at 0)

string gUsage = "";


myHelp()
{
gUsage = "\n **** Current Speed is: " + (string)gSpeed + "\n" + "**** Current Channel is: " + (string)gChannel + "\n"+"Use channel /"+(string)gChannel+ " to Enter speed between: " + (string)MIN_SPEED + " and " + (string)MAX_SPEED +", example: /"+(string)gChannel+" 0.525 \n" +" To reset script enter: /"+(string)gChannel+ " reset ";
llOwnerSay(gUsage);
}

//+" To change channel enter: /"+channel+ " new channel number, example: /"+channel+" 639 \n"

default
{


state_entry()
{
llSetStatus(STATUS_PHANTOM, TRUE); // set object to phantom
llSetTextureAnim(ANIM_ON | SMOOTH | LOOP, SIDE, X_FRAMES, Y_FRAMES, START, MOVEMENT, gSpeed);
llListen(gChannel, "", llGetOwner(), ""; // listen to my owner
//myHelp( (string) gChannel, (string)gSpeed);
}

on_rez(integer start_param)
{
// this ensures that if we're transferred to a new owner, we're listening to them and not still to the previous one
llResetScript();
}

changed(integer change) { // something changed
if (change & CHANGED_OWNER) llResetScript(); // changed owner - reset script
}

// Alow only owner to set speed of animation on touch
touch_start(integer number)
{
myHelp();
//myHelp( (string) gChannel, (string)gSpeed);
//llListen(gChannel, "", llGetOwner(), ""; // listen to my owner
}

listen(integer channel, string name, key id, string message)
{

if (message == "reset" llResetScript();
else if ((float)message >= MIN_SPEED && (float)message < MAX_SPEED)
{
gSpeed = (float)message;
llSetTextureAnim(ANIM_ON | SMOOTH | LOOP, SIDE, X_FRAMES, Y_FRAMES, START, MOVEMENT, gSpeed);
}
else{
llOwnerSay("*** Invalid Command ***";
myHelp();
//myHelp((string)channel, message);
}
}

}


so the parameters can be predefined and redefined live.. but i still would like to know how
i can set a random variable and determine globals that can work across prims without linking.

this is animation help not scripting. You'd find you answer much quicker there.