Fixed: Particle generator flags ptf_vflat, ptf_hflat and ptf_flat should be ignored for line and model type particles.
Replaced P_CheckPtcPlanes as it no longer necessary. We track changes to a surface's current material, so instead do this once after map load is completed and then as necessary from Surface::SetMaterial
Todo: It should now be possible to destroy any preexisting flat-triggered generators upon material change.
Fixed: Particle generator flags ptf_vflat, ptf_hflat and ptf_flat should be ignored for line and model type particles.
Replaced P_CheckPtcPlanes as it no longer necessary. We track changes to a surface's current material, so instead do this once after map load is completed and then as necessary from Surface::SetMaterial
Todo: It should now be possible to destroy any preexisting flat-triggered generators upon material change.