organized code

2019-11-12 07:10:51 -05:00
parent d404e93420
commit ed1da66d99
4 changed files with 188 additions and 75 deletions
@@ -0,0 +1,53 @@
+package kaptainwutax.seedcracker.cracker;
+
+import kaptainwutax.seedcracker.util.Rand;
+import kaptainwutax.seedcracker.util.math.LCG;
+import net.minecraft.world.gen.ChunkRandom;
+
+import java.util.List;
+
+public class TimeMachine {
+
+    private LCG inverseLCG = Rand.JAVA_LCG.combine(-2);
+
+    public TimeMachine() {
+
+    }
+
+    public List<Long> buildStructureSeeds(int pillarSeed, List<StructureData> structureDataList, List<Long> structureSeeds) {
+        ChunkRandom chunkRandom = new ChunkRandom();
+
+        for(long i = 0; i < (1L << 32); i++) {
+            long structureSeed = this.timeMachine(i, pillarSeed);
+            boolean goodSeed = true;
+
+            for(StructureData structureData: structureDataList) {
+                chunkRandom.setStructureSeed(structureSeed, structureData.getRegionX(),
+                        structureData.getRegionZ(), structureData.getSalt());
+
+                if(!structureData.test(chunkRandom)) {
+                    goodSeed = false;
+                    break;
+                }
+            }
+
+            if(goodSeed) {
+                structureSeeds.add(structureSeed);
+            }
+        }
+
+        return structureSeeds;
+    }
+
+    public long timeMachine(long partialWorldSeed, int pillarSeed) {
+        long currentSeed = 0L;
+        currentSeed |= (partialWorldSeed & 0xFFFF0000L) << 16;
+        currentSeed |= (long)pillarSeed << 16;
+        currentSeed |= partialWorldSeed & 0xFFFFL;
+
+        currentSeed = inverseLCG.nextSeed(currentSeed);
+        currentSeed ^= Rand.JAVA_LCG.multiplier;
+        return currentSeed;
+    }
+
+}