Major update of chunk system for 1.16.2

bot/world/bitarray_test.go

@@ -0,0 +1,50 @@
+package world
+
+import (
+	"encoding/binary"
+	"encoding/hex"
+	"testing"
+)
+
+func TestBitArrayBasic(t *testing.T) {
+	a := bitArray{
+		width:          5,
+		valsPerElement: valsPerBitArrayElement(5),
+		data:           make([]uint64, 5),
+	}
+
+	if got, want := a.Size(), 12*5; got != want {
+		t.Errorf("size = %d, want %d", got, want)
+	}
+
+	a.Set(0, 4)
+	if v := a.Get(0); v != 4 {
+		t.Errorf("v[0] = %d, want 4", v)
+	}
+	a.Set(12, 8)
+	if v := a.Get(12); v != 8 {
+		t.Errorf("v[12] = %d, want 8", v)
+	}
+}
+
+func TestBitArrayHardcoded(t *testing.T) {
+	d1, _ := hex.DecodeString("0020863148418841")
+	d2, _ := hex.DecodeString("01018A7260F68C87")
+
+	a := bitArray{
+		width:          5,
+		valsPerElement: valsPerBitArrayElement(5),
+		data:           []uint64{binary.BigEndian.Uint64(d1), binary.BigEndian.Uint64(d2)},
+	}
+
+	if got, want := a.Size(), 12*2; got != want {
+		t.Errorf("size = %d, want %d", got, want)
+	}
+
+	want := []uint{1, 2, 2, 3, 4, 4, 5, 6, 6, 4, 8, 0, 7, 4, 3, 13, 15, 16, 9, 14, 10, 12, 0, 2}
+	for idx, want := range want {
+		if got := a.Get(uint(idx)); got != want {
+			t.Errorf("v[%d] = %d, want %d", idx, got, want)
+		}
+	}
+}