fix: toJson / fromJson didn't use maxBitsPerBlock (#238)

* fix: JSON is losing maxBitsPerBlock

* add test

* forgot commit

Author: zardoy

.gitignore

@@ -3,3 +3,4 @@ dist/
 benchmarks/results/
 package-lock.json
 .vscode
+.DS_Store

src/pc/common/PaletteContainer.js

@@ -113,6 +113,7 @@ class IndirectPaletteContainer {
       type: 'indirect',
       palette: this.palette,
       maxBits: this.maxBits,
+      maxBitsPerBlock: this.maxBitsPerBlock,
       data: this.data.toJson()
     })
   }
@@ -122,6 +123,7 @@ class IndirectPaletteContainer {
     return new IndirectPaletteContainer({
       palette: parsed.palette,
       maxBits: parsed.maxBits,
+      maxBitsPerBlock: parsed.maxBitsPerBlock,
       data: BitArray.fromJson(parsed.data)
     })
   }
@@ -171,7 +173,8 @@ class SingleValueContainer {
       value: this.value,
       bitsPerValue: this.bitsPerValue,
       capacity: this.capacity,
-      maxBits: this.maxBits
+      maxBits: this.maxBits,
+      maxBitsPerBlock: this.maxBitsPerBlock
     })
   }
 
@@ -181,7 +184,8 @@ class SingleValueContainer {
       value: parsed.value,
       bitsPerValue: parsed.bitsPerValue,
       capacity: parsed.capacity,
-      maxBits: parsed.maxBits
+      maxBits: parsed.maxBits,
+      maxBitsPerBlock: parsed.maxBitsPerBlock
     })
   }
 }
@@ -196,14 +200,16 @@ function containerFromJson (j) {
     return new IndirectPaletteContainer({
       palette: parsed.palette,
       maxBits: parsed.maxBits,
-      data: BitArray.fromJson(parsed.data)
+      data: BitArray.fromJson(parsed.data),
+      maxBitsPerBlock: parsed.maxBitsPerBlock
     })
   } else if (parsed.type === 'single') {
     return new SingleValueContainer({
       value: parsed.value,
       bitsPerValue: parsed.bitsPerValue,
       capacity: parsed.capacity,
-      maxBits: parsed.maxBits
+      maxBits: parsed.maxBits,
+      maxBitsPerBlock: parsed.maxBitsPerBlock
     })
   }
   return undefined

test/ChunkColumn.test.js

@@ -145,6 +145,16 @@ for (const version of allVersions) {
       assert.strictEqual(4, cc2.getSkyLight(new Vec3(0, 4, 0)))
       assert.strictEqual(cc.toJson(), cc2.toJson())
     })
+    it('to/from JSON work and keep maxBitsPerBlock', () => {
+      const cc = new ChunkColumn()
+      const cc2 = ChunkColumn.fromJson(cc.toJson())
+
+      for (let i = 0; i < 4096; i++) {
+        cc2.setBlockStateId(new Vec3(0, 0, 0), i) // Decides to switch to Direct pallete at some point
+        const blockStateId = cc2.getBlockStateId(new Vec3(0, 0, 0))
+        if (blockStateId !== i) throw new Error(`Expected ${i} but got ${blockStateId}`)
+      }
+    })
 
     //