Refactor into server object to handle registered accounts

pkg/game/world_test.go

@@ -0,0 +1,24 @@
+package game
+
+import (
+	"testing"
+)
+
+func TestNewWorld(t *testing.T) {
+	// Very basic for now, nothing to verify
+	world := NewWorld()
+	if world == nil {
+		t.Error("Failed to create world")
+	}
+}
+
+func TestWorld_CreateInstance(t *testing.T) {
+	world := NewWorld()
+	a := world.CreateInstance()
+	b := world.CreateInstance()
+
+	// Basic duplicate check
+	if a == b {
+		t.Errorf("Created identical instances")
+	}
+}