-- get the base address
local baseAddress = getAddress("client_dx.exe")

-- light intensity = 0xFF
-- light color = 0xD7
local lightValue = { 0xFF, 0xD7 }

-- address to creature pointer
local creaturePtrAddress = baseAddress + 0x161B20BC

-- offset to light address
local lightOffset = 0xA4

-- address to patch when we turn torch on or
-- cast something that changes current light
local torchAddress = baseAddress + 0xFA387

-- address to patch when we change our character
-- z position (e.g.: get into a cave) and we get a light change
local floorChangeAddress = baseAddress + 0x1019C1

-- cheat code: mov ax, D7FF
local opcode = { 0x66, 0xB8, 0xFF, 0xD7 }

-- patch with our cheat code
writeBytes(torchAddress, opcode)
writeBytes(floorChangeAddress, opcode)

-- at end, we write our desired light to the light address
-- to force the client display our new light:
-- first, read pointer
-- later, write light value to light offset
local creaturePtr = readInteger(creaturePtrAddress)

if (creaturePtr and creaturePtr ~= 0) then
	local lightAddress = creaturePtr + lightOffset
	writeBytes(lightAddress, lightValue)
end