options for ore spawn tiling; actual ore tile textures

assets/mods/basegame/ores/worldgen.csv

@@ -1,4 +1,20 @@
-"id";"freq";"power";"scale";"comment"
-"1";"0.026";"0.01";"0.505";"copper (malachite)"
-"2";"0.040";"0.01";"0.505";"iron (haematite)"
-#"3";"0.040";"0.08";"0.501";"coal"
+"id";"freq";"power";"scale";"tiling";"comment"
+"1";"0.026";"0.01";"0.505";"a16";"copper (malachite)"
+"2";"0.040";"0.01";"0.505";"a16";"iron (haematite)"
+#"3";"0.040";"0.08";"0.501";"r16";"coal"
+
+################################################################################
+
+# id: ore ID to spawn, the ID must exist on the ores.csv
+#
+# freq: frequency value used to set up noise generator. Larger = ore veins are closer together
+# power: power value (as in: randomNumber ^ power) used to set up the noise generator. Larger = veins are larger as you go deeper. 0.01 almost negates this effect
+# scale: scale value used to set up the noise generator. Larger = thicker veins. A valid value tend to play around the 0.5; you'll need figure out this value by trial and error
+#
+# tiling: determines how the tiles are tiled
+#   - a16: use 4-neighbour autotiling (16 possible cases)
+#   - a47: use 8-neighbour autotiling (47 possible cases)
+#   - r16: use the hash of the tile position as a variant selection, module 16
+#   - r8: use the hash of the tile position as a variant selection, module 8
+#
+# comment: human-readable comments, not actually parsed

src/net/torvald/terrarum/ModMgr.kt

@@ -520,8 +520,9 @@ object ModMgr {
                     val freq = rec.get("freq").toDouble()
                     val power = rec.get("power").toDouble()
                     val scale = rec.get("scale").toDouble()
+                    val tiling = rec.get("tiling")
 
-                    Worldgen.registerOre(OregenParams(tile, freq, power, scale))
+                    Worldgen.registerOre(OregenParams(tile, freq, power, scale, tiling))
                 }
             }
             catch (e: IOException) {

src/net/torvald/terrarum/modulebasegame/worldgenerator/Oregen.kt

@@ -143,8 +143,9 @@ class Oregen(world: GameWorld, private val caveAttenuateBiasScaled: ModuleScaleD
 }
 
 data class OregenParams(
-    val tile: String,
+    val tile: String, // ores@<modname>:<id>
     val freq: Double, //adjust the "density" of the caves
     val power: Double, // adjust the "concentration" of the cave gen. Lower = larger voids
     val scale: Double, // also adjust this if you've touched the bias value. Number can be greater than 1.0
+    val tiling: String, // a16, a47, r16, r8
 )

src/net/torvald/terrarum/modulebasegame/worldgenerator/OregenAutotiling.kt

@@ -1,10 +1,13 @@
 package net.torvald.terrarum.modulebasegame.worldgenerator
 
+import net.torvald.random.XXHash64
 import net.torvald.terrarum.Point2i
 import net.torvald.terrarum.concurrent.sliceEvenly
+import net.torvald.terrarum.gameitems.ItemID
 import net.torvald.terrarum.gameitems.isOre
 import net.torvald.terrarum.gameworld.GameWorld
 import net.torvald.terrarum.modulebasegame.TerrarumIngame
+import net.torvald.terrarum.serialise.toBig64
 import net.torvald.terrarum.toInt
 import net.torvald.terrarum.utils.OrePlacement
 import net.torvald.terrarum.worlddrawer.BlocksDrawer
@@ -13,7 +16,7 @@ import kotlin.math.max
 /**
  * Created by minjaesong on 2023-10-26.
  */
-class OregenAutotiling(world: GameWorld, seed: Long) : Gen(world, seed) {
+class OregenAutotiling(world: GameWorld, seed: Long, val tilingModes: HashMap<ItemID, String>) : Gen(world, seed) {
 
     private val threadExecutor = TerrarumIngame.worldgenThreadExecutor
     private val genSlices = max(threadExecutor.threadCount, world.width / 8)
@@ -37,11 +40,34 @@ class OregenAutotiling(world: GameWorld, seed: Long) : Gen(world, seed) {
             val (ore, _) = world.getTileFromOre(x, y)
 
             if (ore.isOre()) {
-                // get placement (tile connection) info
-                val autotiled = getNearbyOres8(x, y).foldIndexed(0) { index, acc, placement ->
-                    acc or (placement.item == ore).toInt(index)
+                // get tiling mode
+                val tilingMode = tilingModes[ore]
+
+                val placement = when (tilingMode) {
+                    "a16" -> {
+                        // get placement (tile connection) info
+                        val autotiled = getNearbyOres8(x, y).foldIndexed(0) { index, acc, placement ->
+                            acc or (placement.item == ore).toInt(index)
+                        }
+                        BlocksDrawer.connectLut16[autotiled]
+
+                    }
+                    "a47" -> {
+                        // get placement (tile connection) info
+                        val autotiled = getNearbyOres8(x, y).foldIndexed(0) { index, acc, placement ->
+                            acc or (placement.item == ore).toInt(index)
+                        }
+                        BlocksDrawer.connectLut47[autotiled]
+                    }
+                    "r16" -> {
+                        (XXHash64.hash((y.toLong().shl(32) or x.toLong().and(0xFFFFFFFF)).toBig64(), 16L) % 16).toInt()
+                    }
+                    "r8" -> {
+                        (XXHash64.hash((y.toLong().shl(32) or x.toLong().and(0xFFFFFFFF)).toBig64(), 8L) % 8).toInt()
+                    }
+                    else -> throw IllegalArgumentException("Unknown tiling mode: $tilingMode")
                 }
-                val placement = BlocksDrawer.connectLut16[autotiled]
+
 
                 // actually put the ore block
                 world.setTileOre(x, y, ore, placement) // autotiling will be handled by the other worldgen process

src/net/torvald/terrarum/modulebasegame/worldgenerator/Worldgen.kt

@@ -5,6 +5,7 @@ import net.torvald.random.XXHash64
 import net.torvald.terrarum.App
 import net.torvald.terrarum.App.*
 import net.torvald.terrarum.BlockCodex
+import net.torvald.terrarum.gameitems.ItemID
 import net.torvald.terrarum.gameworld.GameWorld
 import kotlin.math.roundToLong
 
@@ -39,6 +40,10 @@ object Worldgen {
     private val oreRegistry = ArrayList<OregenParams>()
 
     fun getJobs(tags: List<String> = emptyList()): List<Work> {
+        val oreTilingModes = HashMap<ItemID, String>().also {
+            it.putAll(oreRegistry.map { it.tile to it.tiling })
+        }
+
         val tagFilter = if (tags.isEmpty()) { { work: Work -> true } }
         else {
             { work: Work ->
@@ -48,7 +53,7 @@ object Worldgen {
         return listOf(
             Work("Reticulating Splines", Terragen(world, highlandLowlandSelectCache, params.seed, params.terragenParams), listOf("TERRAIN")),
             Work("Adding Rocks", Oregen(world, caveAttenuateBiasScaled, params.seed, oreRegistry), listOf("ORES")),
-            Work("Positioning Rocks", OregenAutotiling(world, params.seed), listOf("ORES")),
+            Work("Positioning Rocks", OregenAutotiling(world, params.seed, oreTilingModes), listOf("ORES")),
             Work("Adding Vegetations", Biomegen(world, params.seed, params.biomegenParams), listOf("BIOME")),
         ).filter(tagFilter)
     }