struct column and chunk, and optimization

save/chunk_test.go

@@ -0,0 +1,53 @@
+package save
+
+import (
+	"github.com/Tnze/go-mc/save/region"
+	"math/rand"
+	"testing"
+)
+
+func TestColumn(t *testing.T) {
+	var c Column
+	r, err := region.Open("testdata/region/r.0.0.mca")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer r.Close()
+
+	data, err := r.ReadSector(0, 0)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = c.Load(data)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	t.Logf("%+v", c)
+}
+
+func BenchmarkColumn_Load(b *testing.B) {
+	// Test how many time we load a chunk
+	var c Column
+	r, err := region.Open("testdata/region/r.-1.-1.mca")
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer r.Close()
+
+	for i := 0; i < b.N; i++ {
+		//x, y := (i%1024)/32, (i%1024)%32
+		x, y := rand.Intn(32), rand.Intn(32)
+
+		data, err := r.ReadSector(x, y)
+		if err != nil {
+			b.Fatal(err)
+		}
+
+		err = c.Load(data)
+		if err != nil {
+			b.Fatal(err)
+		}
+	}
+}