Only beam laser deferred lights work, cannons and rockets dont

[beherith]

Only beam laser deferred lights work, cannons and rockets dont

[Bluestone]

For me cannons & beamlasers show lights, but rockets don't, tested with corraid and corhrk. I don't know what its meant to look like for rockets, so don't think I can fix.

[beherith]

For rockets the light should be white, but subdued. corhrk is hard to see, try armjanus or armrock, as that shoots close to ground.

[Bluestone]

http://imolarpg.dyndns.org/trac/balatest/browser/branches/BAR/luaui/widgets/gfx_deferred_rendering.lua#L533 this check fails, tested with janus

[Bluestone]

As far as i can see, the height based checks for point light projectiles were just wrong, e.g. y was absolute height, not height above map. Couldn't figure out what they were supposed to do (maybe a minor speedup?) so removed them.