switch to golang wrapper for enet

backend/main.go

@@ -0,0 +1,76 @@
+package main
+
+import (
+	_ "embed"
+	"log/slog"
+	"os"
+
+	enet "github.com/codecat/go-enet"
+	_ "github.com/mattn/go-sqlite3"
+)
+
+func main() {
+	port := uint16(8095)
+	logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
+	slog.SetDefault(logger)
+
+	// Initialize enet
+	slog.Info("Initializing E-Net Server", "port", port)
+	enet.Initialize()
+
+	// Create a host listening on 0.0.0.0:8095
+	host, err := enet.NewHost(enet.NewListenAddress(port), 32, 1, 0, 0)
+	if err != nil {
+		slog.Error("Couldn't create host", "error", err)
+		return
+	}
+	slog.Info("Server started", "port", port)
+
+	// The event loop
+	for true {
+		// Wait until the next event
+		ev := host.Service(1000)
+
+		// Do nothing if we didn't get any event
+		if ev.GetType() == enet.EventNone {
+			continue
+		}
+
+		switch ev.GetType() {
+		case enet.EventConnect: // A new peer has connected
+			slog.Info("New peer connected", "address", ev.GetPeer().GetAddress())
+
+		case enet.EventDisconnect: // A connected peer has disconnected
+			slog.Info("Peer disconnected", "address", ev.GetPeer().GetAddress())
+
+		case enet.EventReceive: // A peer sent us some data
+			// Get the packet
+			packet := ev.GetPacket()
+
+			// We must destroy the packet when we're done with it
+			defer packet.Destroy()
+
+			// Get the bytes in the packet
+			packetBytes := packet.GetData()
+
+			// Respond "pong" to "ping"
+			if string(packetBytes) == "ping" {
+				ev.GetPeer().SendString("pong", ev.GetChannelID(), enet.PacketFlagReliable)
+				continue
+			}
+
+			// Disconnect the peer if they say "bye"
+			if string(packetBytes) == "bye" {
+				slog.Info("Peer sent bye, disconnecting")
+				ev.GetPeer().Disconnect(0)
+				continue
+			}
+		}
+	}
+
+	// Destroy the host when we're done with it
+	host.Destroy()
+
+	// Uninitialize enet
+	enet.Deinitialize()
+}