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I have been trying to write a good AI program for a war kind of first person shooter were it would delete the enemy if I shot it therefore reducing the troop number. It works ok but when i delete the object after its been killed it says my object does not exist this is probaly because i have 1 subroutine for a cluster of enemies(reducing the amount of code) I will show you what i mean:

enemymovementAI:

for e=12 to 15

Point object e,X#,Y#,Z#
move object e,6

next e

return

LIke I said the game is in its early stages but I think the problem is because deleting an object in that range would make the object not exist what otherways could you do this I will include the the the main loop THANKS!!!

P.S. I deleted the delete object commands for obvious reasons but they would go under the ehealth commands.

Change it to:
for e=12 to 15
if object exist(e)
Point object e,X#,Y#,Z#
move object e,6
endif
next e
return

I'm no expert at this sort of stuff, but if I was managing a group of enemy 'objects', then I would create a numerical array - with say:

Dim Enemy(50): Rem Max number you can have
NumEnemies = 20: Rem number you want on the current level

When you create enemy number 1, then you would say Enemy(1)=1 (alive). Create number 2 and then use Enemy(2)=1. (1 = alive).

Each run through the main loop of your program, a simple for next loop would do something like:



When an enemy is killed, you delete the object and set that object's 'alive' state to 0 (dead). So if you kill object 4 then you would use Enemy(4)=0.

Once this is done, the above loop won't try to update that object's position. That's where I think your error is being caused because you are trying to move the object you just deleted.

If you want to respawn a dead enemy, or just bring in reinforcements, a similar loop would be called:



The first loop should prevent your object does not exist errors as you would only be trying to move objects which are alive - not dead.

This should work in theory.

TDK_Man

Thanks TDK that works very nicely!