ENTITY* robot;


function move_ahead()
{
robot.x += 5;
}

function main()
{
video_switch (8,32,1);
level_load ("Drohne_Level.wmb");
while(!robot) wait(1); //wait for the robot to load
on_w = move_ahead;
}


action Drohne()
{
robot = me;
}

In red, I added a while loop. This will halt the function until the model, which the robot pointer points to, loads into the game (about a half a second or less, on a decent computer, probably only a frame). It is a very short amount of time, but chances are the engine will read "on_w = move_ahead;" and call function move_ahead() before the robot even loads.

However, this entire problem can be avoided by combining move_ahead() with Drohne():



This eliminates the need for a function and also reduces the use of pointers (in this simple code it actually won't be necessary to have a pointer at all). Since pointers can be very tricky some times, I prefer to avoid using them when possible.

This is useful to know, I just write wait(1); but I shall use the above

Thanks

If you do, just remember that everything after that while loop won't happen until the pointer is valid.

function main might actually be a bad spot for such a loop, another alternative would be to just use "wait()"

or if you want to be absolutely sure, another way would be



Which terminates the function if robot is invalid, ergo no missing pointer.

thanks guys!

the problem is solved.

There are some differences between c-script and lite-c file types. First I would try saving them in both file types to see if one works. If not, combine some of the previous advice given by other members in this forum with this lite-c code:

Again, make sure the Drohne action is attached to the model you want to move in WED. Compile the level first, then run it and press 'w'.
Hope this helps!