tank rotation on a surface

[big_daddy2]

hi all i am trying to use the physics object to make myself spin around on a arc object, the problem is i do not know how to do this. I tried using the angular object in the physic object but i cannot get it to work, i just get flung way across the map. the arc is at position 0 735 30 if it matter, thx

[Spazzy McGee]

You need the centre of rotation to be the centre of your arc. The centre of rotation is the point which you move around.

Angular physics has three parameters:

Code: Select all

physics
   name whatever
   angular <speed> <x> <y>
end

Where <speed> is the speed of rotation, in degrees per second; <x> is the x coordinate of the centre of rotation; and <y> is the y coordinate.

You can forget about the z coordinate, because angular physics only works in the x y plane.

I think you want something like this, where the centre coordinates, are the same as your arc's coordinates (I set the speed to 5):

Code: Select all

physics
   name spinny
   angular 5 0 735
end