SImple IA

Hi,

The scripts for my game are almost complete.

What i need is only to do a simple AI

the enemy aim to you and shoot and change move direction when it collide with a box collider

there is a tutorial for do this?

 

You can do a simple finite state style AI with different stimuli changing the state i.e. colliding with an object calls a function avoid() which sets the AI state to avoid mode. Each time the AI updates it checks what state it's in and acts accordingly. You can do this with if statements but you're likely to have a lot of states so might be better with a switch. Something like:

switch(state){
case "idle":
// move to a random location or stand still
break;
case "alert":
// AI is aware of an enemy and moves toward it
break;
case "shoot":
// Enemy is in line of sight and firing range, shoot
break;
case "avoid":
// AI hit an object, move around it
break;
}

You can also have multiple states like shooting and walking or morale etc.

 

Hints:

Use Character controllers on your Characters. They have a Move function to make moving in a direction easier. They are also good for using ramps(stairs) and general movement issues.

For rotation I suggest the RotateTowards that can be found on the Script Reference for turning slowly.

transform.lookat can be used for instant rotation or constant rotation towards an object.

For examples on how to make a gun and a Firing script, See the FPS tutorial.

 

I agree with Drew that the FPS tutorial is the best place to find simple but effective AI.

 

ok,thanks

 

mm now it work but...my tank is not correctly aligned



where i wrong?

 

Make sure you tank is lined up correctly in the modeler.

 

for modeler what do you mean? the program who i have used for made the tank or a tool inside unity?

if you mean the program i have used 3ds and all pivot are align correctly (i have test also with another models)

 

ok i resolved this but now i have got a new problem,

when i create a build the IA doesn't work... tank doesn't follow the IA and stay freeze...

 

There can be many reasons for this. Search the forums.

 

i do a search but i don't have found anything for fix this

 

Ok, I did a search too and it seems to be a bug unless there is a problem in your code we don't know about. If it works in the editor, but not in the build it is almost always a bug though so file a report.