Really quick. Since that's ent moving. You can render the entity to give it that look.
From engine:
Code:
set_rendering ( index, fx=kRenderFxNone, r=255,g=255,b=255, render=kRenderNormal,amount=16 )
For that green transparent look, this would be used
Code:
set_rendering (ent,kRenderFxNone,0,200,0,kRenderTransTexture,16 )
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