multiplayer: added basic server and client functionality

player/player.gd

@@ -16,6 +16,11 @@ var target_velocity = Vector3.ZERO
 
 var _health = 100
 
+# Multiplayer
+
+func _enter_tree():
+	set_multiplayer_authority(str(name).to_int())
+	
 # Player UI
 
 func resize_ui():
@@ -220,8 +225,14 @@ func _ready():
 	get_viewport().size_changed.connect(resize_ui)
 	resize_ui()
 	respawn()
+	
+	if is_multiplayer_authority():
+		$CameraGimbal/InnerGimbal/Camera3D.current = true
+	else:
+		$CameraGimbal/InnerGimbal/Camera3D.current = false
 
 func _physics_process(delta):
+	if not is_multiplayer_authority(): return
 	if health() < 1 or position.y <= -1000:
 		die()