Fix bits per biome if there is only one biome in the palette

TBlueF · TBlueF · commit 9bc77c725704 · 2022-10-17T09:18:13.000+02:00
diff --git a/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/ChunkAnvil118.java b/BlueMapCore/src/main/java/de/bluecolored/bluemap/core/mca/ChunkAnvil118.java
@@ -210,7 +210,7 @@ public Section(CompoundTag sectionData) {
             if (skyLight.length < 2048 && skyLight.length > 0) skyLight = Arrays.copyOf(skyLight, 2048);
 
             this.bitsPerBlock = this.blocks.length >> 6; // available longs * 64 (bits per long) / 4096 (blocks per section) (floored result)
-            this.bitsPerBiome = Integer.SIZE - Integer.numberOfLeadingZeros(this.biomePalette.length - 1);
+            this.bitsPerBiome = Math.max(1, Integer.SIZE - Integer.numberOfLeadingZeros(this.biomePalette.length - 1));
         }
 
         private BlockState readBlockStatePaletteEntry(CompoundTag paletteEntry) {

Original file line number	Diff line number	Diff line change
`@@ -210,7 +210,7 @@ public Section(CompoundTag sectionData) {`
`210`	`210`	`if (skyLight.length < 2048 && skyLight.length > 0) skyLight = Arrays.copyOf(skyLight, 2048);`
`211`	`211`
`212`	`212`	`this.bitsPerBlock = this.blocks.length >> 6; // available longs * 64 (bits per long) / 4096 (blocks per section) (floored result)`
`213`		`- this.bitsPerBiome = Integer.SIZE - Integer.numberOfLeadingZeros(this.biomePalette.length - 1);`
	`213`	`+ this.bitsPerBiome = Math.max(1, Integer.SIZE - Integer.numberOfLeadingZeros(this.biomePalette.length - 1));`
`214`	`214`	`}`
`215`	`215`
`216`	`216`	`private BlockState readBlockStatePaletteEntry(CompoundTag paletteEntry) {`