Introduce core components for "Escape From Teacher" game: server, client, physics, asset system, and protocol definitions. Add Docker-Compose setup for Redis and NATS infrastructure.

pkg/stream/adapter.go

@@ -0,0 +1,32 @@
+package stream
+
+import (
+	"log"
+
+	"github.com/nats-io/nats.go"
+)
+
+// Connect verbindet uns mit dem NATS Cluster (oder lokalem Docker Container)
+func Connect(url string) (*nats.Conn, error) {
+	// Default auf localhost, wenn leer
+	if url == "" {
+		url = nats.DefaultURL
+	}
+
+	nc, err := nats.Connect(url)
+	if err != nil {
+		return nil, err
+	}
+
+	log.Printf("🔌 Verbunden mit NATS unter %s", url)
+	return nc, nil
+}
+
+// Helper Konstanten für unsere Topic-Struktur
+const (
+	// Topic: game.<RoomID>.input -> Client sendet Tasten
+	SubjectGameInput = "game.%s.input"
+
+	// Topic: game.<RoomID>.state -> Server sendet Positionen
+	SubjectGameState = "game.%s.state"
+)