mc gen start

2026-07-05 10:25:43 +02:00
parent 201e0dfa44
commit a8b090227b
6 changed files with 433 additions and 0 deletions
@@ -0,0 +1,40 @@
+package gen
+
+import (
+	"testing"
+)
+
+func TestXoroshiroFromString(t *testing.T) {
+	x := XoroshiroFromString("minecraft:offset")
+	if x.L != 0x080518cf6af25384 || x.H != 0x3f3dfb40a54febd5 {
+		t.Errorf("bad L: %x, H: %x", x.L, x.H)
+	}
+}
+
+func TestSeedChain(t *testing.T) {
+	var worldSeed int64 = 70388202460762
+	x := XoroshiroFromSeed(worldSeed)
+	x.XorString("minecraft:entities/wither_skeleton")
+	x.Mix()
+	i := 0
+	for {
+		_ = x.NextBound(1)
+		_ = x.NextBound(2)
+		if x.NextFloat() < 0.025 {
+			i++
+		} else {
+			break
+		}
+	}
+	if i != 7 {
+		t.Errorf("expected 7, got %d", i)
+	}
+}
+
+func TestBiome(t *testing.T) {
+	var worldSeed int64 = 70388202460762
+	x := XoroshiroFromSeed(worldSeed)
+	x.Mix()
+	b := BiomeNoiseFromXoroshiro(x, false)
+	b.Sample(-1, -16, 0)
+}