make world abstract

include/client/ClientWorld.h

@@ -0,0 +1,19 @@
+#include <blitz/godot/World.h>
+
+namespace blitz {
+
+class ClientWorld : public World {
+	GDCLASS(ClientWorld, World)
+  protected:
+	static void _bind_methods();
+
+  public:
+	ClientWorld();
+	~ClientWorld();
+	void _process(float delta);
+
+  private:
+    void UpdatePlayerPos();
+};
+
+}  // namespace blitz