curioustorvald/Terrarum
1
0
Fork 0
mirror of https://github.com/curioustorvald/Terrarum.git synced 2026-06-15 21:14:04 +09:00
Code Issues Packages Projects Releases Wiki Activity

faster block tiling hash

Browse Source
This commit is contained in:
minjaesong
2025-10-13 20:08:22 +09:00
parent 99bd56317d
commit 767aa09a17
3 changed files with 54 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
src/net/torvald/terrarum/blockproperties/BlockProp.kt
View File

@@ -59,14 +59,14 @@ class BlockProp : TaggedProp {
fun getLumCol(x: Int, y: Int) = if (dynamicLuminosityFunction == 0) {
baseLumCol
} else {
val offset = XXHash32.hashGeoCoord(x, y).fmod(BlockCodex.DYNAMIC_RANDOM_CASES)
val offset = getHashCoord(x, y, BlockCodex.DYNAMIC_RANDOM_CASES)
BlockCodex[BlockCodex.tileToVirtual[id]!![offset]]._lumCol
}
fun getLumCol(x: Int, y: Int, channel: Int): Float = if (dynamicLuminosityFunction == 0) {
baseLumCol.lane(channel)
} else {
val offset = XXHash32.hashGeoCoord(x, y).fmod(BlockCodex.DYNAMIC_RANDOM_CASES)
val offset = getHashCoord(x, y, BlockCodex.DYNAMIC_RANDOM_CASES)
BlockCodex[BlockCodex.tileToVirtual[id]!![offset]]._lumCol.lane(channel)
}
@@ -112,4 +112,20 @@ class BlockProp : TaggedProp {
val isSolidForTileCnx: Boolean
get() = if (tags.contains("DORENDER") || !isActorBlock) isSolid else false
companion object {
private fun tavGrainSynthesisRNG(frame: Int, band: Int, x: Int, y: Int): Int {
var hash = frame * 0x9e3779b9.toInt() xor band * 0x7f4a7c15 xor (y shl 16) xor x
hash = hash xor (hash shr 16)
hash = hash * 0x7feb352d
hash = hash xor (hash shr 15)
hash = hash * 0x846ca68b.toInt()
hash = hash xor (hash shr 16)
return hash
}
private fun getHashCoord(x: Int, y: Int, mod: Int): Int {
return tavGrainSynthesisRNG(31, 65003, x, y) fmod mod
}
}
}