Mouse controlled cannon on a tank

[Rabagast]

Hi!
I need a little bit help with this.

I use the mouse to controll the cannon on the tank.
And I use always set the position on the tank.
But when I rotate the tank, the cannon is not in the same position. It's also moving a little when I rotate the tank.

I think maybe I can set the position to each direction a change the X,Y numbers, but it will take a lot of time. Is it a better way to do this?

Thanks

[nivram]

Hi Robagast. I know you are a veteran coder, but are the hotspots on the cannon the same during rotation (centered)? Or does this not apply in your situation.

Marv

[Rabagast]

I think it must be the hotspot. I tried to change the hotspot, but it's the same. I have uploaded the file. It's better to look at it by yourself.
I have two frames. Test 1 and Test 2. You can look at both.

The file size is about 7 MB.

Thanks

http://mfa.aquadasoft.com/view/1287429187-Firepower

[Skyhunter]

Your hotspot is wrong, not just on turret, but tank hotspot is on center which is good for tank, but not good for positioning the turret which shouldnt be on center., you should set position to action point of the tank and set the action point on tank where you want the turret to be.

Nice tank by the way.

[Rabagast]

But where shall the hotspot be? I'm so stupid with this hotspot and action point. Can you please explain me a little bit more? Or give me an example?

Thanks

[nivram]

You should place the hotspot so that it will be in the same place as the turret rotates.

Marv

[Rabagast]

Ok, but shall the hotspot to the tank be the same on every direction? For example will the hotspot be exactle in the same place to the up direction as the left direction?

[Dynasoft]

The hotspot should be on the same part of the tank. This won't necessarily be the same coordinates.

[Rabagast]

Thanks everybody. It works now.