Interactive Objects in Foreground World

[TylerH]

THe age old problem I have had with guns that magically clip into the world geometry (example the AK in the tunnels.sbx file included with the SDK) hasn't seemed to have been solved.

 

My idea was simply: can we have these gun entities in a separate world that is rendered ontop of everything else? Then the guns would always be draw on top. For a first person perspective game this wouldn't be an issue at all as far as I can tell.

 

Just looking to see if anyone has done this, has another way of preventing this, or would like to discourage or encourage me to try and post my results.

 

 

Thanks,

Tyler

[Marleys Ghost]

http://www.leadwerks.com/werkspace/topic/2857-how-to-prevent-fps-weapon-from-going-into-obstacles/page__view__findpost__p__26615

[Flexman]

We use a separate 'cockpit' world to render personal inventory items (guns, map, compass) and helicopter / vehicle cockpits.

 

It has over advantages too, it prevents intrusion of emitters, water and fog effects into these spaces. And you can keep the object co-ordinates of this space at the origin so there are no precision or zbuffer problems and camera ranges are pretty shallow too.

 

The downside is you have to handle continuity of lights between worlds. I duplicate the directional light in such a world using something like this (edited for simplicity)...

 

  MyGame.CockpitWorldDLight.SetRotation(EntityRotation(MyGame.PlayerCcontroller, 1).Minus(MyGame.SunLightPivot.Rotation).Inverse());

 

This moves the cockpit world directional light around the vehicle in such a way it matches an objects rotation in the main 3D world (where the 'sun' is a directional like parented to pivot "SunLightPivot").

 

Duplicate ambient light where appropriate. Muzzle flashes are easily duplicated in both worlds if needed on a weapon.

 

 

This might sound like total gobbledygook and overly complicated, often simple is best but this worked best for us due to world scaling/environment and precision issues.

 

In a nutshell, after rendering the main 3D world, the depth buffer is cleared, cockpit world rendered then drawn over the top.

[TylerH]

The additional world and cleared depth buffer ultimately worked. Thanks to both of you!