How does GLAS pass PHOT? I thought I could use tpt.create(x,y,"phot") where x and y correspond to a pixel already occupied by GLAS because I thought GLAS behaved to PHOT as NONE behaved to most other particles and would act as an empty container but being technically a different medium than none (my plan was to turn GLAS into a lasing medium but first I need to know how to spawn PHOT in GLAS to simulate the "stimulated emission" of a laser). However I can't spawn PHOT inside glass with tpt.create. Please help here.

Oh, and how do I assign a color to a photon using Lua commands? TMP CTYPE and LIFE don't seem to work.

jacksonmj:

Delete the glass, create the photon, then recreate the glass? (The method the C code uses to create photons on top of glass (e.g. from neutrons passing through glass) doesn't use the create_part function)

Photon colour is set with ctype. Bits 0-11 add blue, bits 9-20 add green, bits 18-29 add red.
So ctype = 0xF would be blue, ctype=0xF000 would be green, 0xF0000F would be purple.

So is there any way to create photons in glass using Lua in the same manner that the original C code does? Because I want to be able to create Photons on glass using Lua code like that to simulate "stimulated emission" which is so key to the working of a LASER. I don't want to have to change any of the existing update function of the glass.

And are you sure that it's 12 bits per color channel not the normal 8 bits per color channel?