The Powder Toy

12Me21

A few old elements will change the color of photons that reflect off of them, but it seems like this hasn't been updated for a long time.
I think this should work with all elements.

Ligan

I agree. Also ICE, BUBW, LN2 and gasses should be transparent

jacob1

I added one for POLO.

The main issue is that there's not many photon colors to work with ... the photon color format is extremely limited. I see what it was going for, but maybe it could have allowed a few more colors besides yellow, cyan, magenta, and white ...

I made a script to generate all the colors, which I believe is correct (embedded in save with my mod). Pretty much everything comes out to duplicate RGB values

2162908View Save 2162908

docRoboRobert

I agree. PLNT should remove green colour from photons. <--- Don't look at this, I'm stupid...

I agree. PLNT should "eat" all photon's colours instead of green.

Alexwall

@jacob1 (View Post)

can we have this script

Mrprocom

@ajloveslily (View Post)
It automatically gets added to the Powder Toy directory when you open the save in jacob1's mod. Here it is anyway:

local xPos, yPos = 100, 100
local xPos2, yPos2 = 300, 100
local rgb = {}

local function makebits(color, num, offset)
  local bits = bit.lshift(2^num-1, offset)
  return bit.bor(color, bits)
end

local function makephot(x, y, color)
  local i = sim.partCreate(-1, x, y, tpt.el.phot.id)
  if i ~= -1 then
    sim.partProperty(i, sim.FIELD_CTYPE, color)
  end
end

local function seenColor(r, g, b)
  if not rgb[r] then
    rgb[r] = {}
  end
  if not rgb[r][g] then
    rgb[r][g] = {}
  end
  if not rgb[r][g][b] then
    rgb[r][g][b] = true
    return false
  end
  return true
end

local function getRGB(color)
  local colr, colg, colb = 0, 0, 0
  for i = 0,11 do
    colr = colr + bit.band(bit.rshift(color, i+18), 0x1)
    colg = colg + bit.band(bit.rshift(color, i+9), 0x1)
    colb = colb + bit.band(bit.rshift(color, i), 0x1)
  end
  local multiplier = math.floor(624 / ( colr + colg + colb + 1))
  colr = colr * multiplier
  colg = colg * multiplier
  colb = colb * multiplier
  if colr > 255 then colr = 255 end
  if colg > 255 then colg = 255 end
  if colb > 255 then colb = 255 end

  -- PHOT colors are so screwed up
  colr = bit.rshift(255*colr + 255*colr, 8)
  cobg = bit.rshift(255*colg + 255*colb, 8)
  colb = bit.rshift(255*colb + 255*colb, 8)
  if colr > 255 then colr = 255 end
  if colg > 255 then colg = 255 end
  if colb > 255 then colb = 255 end

  return colr, colg, colb
end

for r = 0,9 do
  for b = 0,9 do
    for g = 0,6 do
      for y = 0,3 do
        for c = 0,3 do
          local color = 0
          color = makebits(color, r, 0)
          color = makebits(color, y, 9)
          color = makebits(color, g, 12)
          color = makebits(color, c, 18)
          color = makebits(color, b, 21)
          local rgbR, rgbG, rgbB = getRGB(color)
          if not seenColor(rgbR, rgbG, rgbB) then
            makephot(xPos2, yPos2, color)
            if xPos2 > 400 then
              xPos2 = 300
              yPos2 = yPos2 + 1
            end
            xPos2 = xPos2 + 1
          end
          makephot(xPos, yPos, color)
          if xPos > 200 then
            xPos = 100
            yPos = yPos + 1
          end
          xPos = xPos + 1
        end
      end
    end
  end
end

Edit: I made a script that uses most of @jacob1's code to assign different colours to newly-placed photons: https://starcatcher.us/scripts/#122

Alexwall

@Mrprocom (View Post)

Thanks!

ttf236

This post is hidden because the user is banned

tptquantum

This post has been removed: replying to spam

Making more elements color PHOT