multiplayer: added basic server and client functionality

main.tscn

@@ -1,12 +1,13 @@
-[gd_scene load_steps=16 format=3 uid="uid://eiaw4xbs3suk"]
+[gd_scene load_steps=17 format=3 uid="uid://eiaw4xbs3suk"]
 
+[ext_resource type="Script" uid="uid://cnbm3aqyg0p2o" path="res://server.gd" id="1_5vw27"]
 [ext_resource type="PackedScene" uid="uid://qb8cbljxgnub" path="res://world/killbrick.tscn" id="1_h2yge"]
-[ext_resource type="PackedScene" uid="uid://cfceg80unq0pe" path="res://player/player.tscn" id="1_ig7tw"]
 [ext_resource type="PackedScene" uid="uid://bcmrj6qkemrll" path="res://world/radiohead_cube.tscn" id="2_0xm2m"]
-[ext_resource type="Texture2D" uid="uid://wdjmyv260he1" path="res://world/textures/grass.jpg" id="2_272bh"]
+[ext_resource type="Texture2D" uid="uid://dnt0vfav03ris" path="res://world/textures/grass.jpg" id="2_272bh"]
 [ext_resource type="PackedScene" uid="uid://of6tq8gpjxtu" path="res://gears/gear_pickup.tscn" id="3_lquwl"]
-[ext_resource type="PackedScene" uid="uid://bafl8q0r61xrg" path="res://gears/gear.tscn" id="4_7mycd"]
-[ext_resource type="Texture2D" uid="uid://2ku62tk8r74x" path="res://world/textures/sky.hdr" id="8_5vw27"]
+[ext_resource type="PackedScene" uid="uid://c117buhmmkvkt" path="res://gears/ball.tscn" id="6_5vw27"]
+[ext_resource type="PackedScene" uid="uid://d3k7b6o56ue5k" path="res://gears/geep.tscn" id="7_kek77"]
+[ext_resource type="Texture2D" uid="uid://bl4yvm44o6gcf" path="res://world/textures/sky.hdr" id="8_5vw27"]
 
 [sub_resource type="BoxShape3D" id="BoxShape3D_7dm0k"]
 size = Vector3(1000, 2, 1000)
@@ -40,9 +41,7 @@ glow_hdr_luminance_cap = 0.0
 [sub_resource type="Compositor" id="Compositor_5vw27"]
 
 [node name="Main" type="Node3D"]
-
-[node name="Player" parent="." instance=ExtResource("1_ig7tw")]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 2, 0)
+script = ExtResource("1_5vw27")
 
 [node name="Baseplate" type="StaticBody3D" parent="."]
 
@@ -68,11 +67,16 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -12, 7, 0)
 [node name="Killbrick" parent="." instance=ExtResource("1_h2yge")]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -40, 1.5, -40)
 
-[node name="GearPickup" parent="." instance=ExtResource("3_lquwl")]
+[node name="BallPickup" parent="." instance=ExtResource("3_lquwl")]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -12, 2, -21)
 
-[node name="Gear" parent="GearPickup" instance=ExtResource("4_7mycd")]
-transform = Transform3D(1, 0, 0, 0, -0.012967386, 0.9999159, 0, -0.9999159, -0.012967386, 0, 0.5, 0)
+[node name="Gear" parent="BallPickup" instance=ExtResource("6_5vw27")]
+
+[node name="GeepPickup" parent="." instance=ExtResource("3_lquwl")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 8, 1.75, -30)
+
+[node name="Gear" parent="GeepPickup" instance=ExtResource("7_kek77")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -0.75, 0)
 
 [node name="WorldEnvironment" type="WorldEnvironment" parent="."]
 environment = SubResource("Environment_7mycd")
@@ -83,3 +87,45 @@ compositor = SubResource("Compositor_5vw27")
 transform = Transform3D(0.70710665, 0.5, -0.5, 0, 0.7071067, 0.7071067, 0.7071069, -0.49999988, 0.49999988, -500, 200, 500)
 light_color = Color(1, 0.87058824, 0.12941177, 1)
 shadow_enabled = true
+
+[node name="UI" type="CanvasLayer" parent="."]
+
+[node name="Menu" type="Panel" parent="UI"]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="MarginContainer" type="MarginContainer" parent="UI/Menu"]
+layout_mode = 0
+offset_right = 1149.0
+offset_bottom = 134.0
+theme_override_constants/margin_left = 15
+theme_override_constants/margin_top = 15
+
+[node name="VBoxContainer" type="VBoxContainer" parent="UI/Menu/MarginContainer"]
+layout_mode = 2
+
+[node name="Label" type="Label" parent="UI/Menu/MarginContainer/VBoxContainer"]
+layout_mode = 2
+text = "Menu
+"
+horizontal_alignment = 1
+
+[node name="ServerButton2" type="Button" parent="UI/Menu/MarginContainer/VBoxContainer"]
+layout_mode = 2
+text = "Host
+"
+
+[node name="ClientButton" type="Button" parent="UI/Menu/MarginContainer/VBoxContainer"]
+layout_mode = 2
+text = "Join
+"
+
+[node name="MultiplayerSpawner" type="MultiplayerSpawner" parent="."]
+_spawnable_scenes = PackedStringArray("uid://cfceg80unq0pe")
+spawn_path = NodePath("..")
+
+[connection signal="pressed" from="UI/Menu/MarginContainer/VBoxContainer/ServerButton2" to="." method="_on_server_button_pressed"]
+[connection signal="pressed" from="UI/Menu/MarginContainer/VBoxContainer/ClientButton" to="." method="_on_client_button_pressed"]

menu.tscn

@@ -0,0 +1,21 @@
+[gd_scene format=3 uid="uid://dbv3ty2ulxir4"]
+
+[node name="Menu" type="Control"]
+layout_mode = 3
+anchors_preset = 0
+
+[node name="client_button" type="Button" parent="."]
+layout_mode = 0
+offset_right = 200.0
+offset_bottom = 100.0
+text = "Client
+"
+
+[node name="server_button" type="Button" parent="."]
+layout_mode = 0
+offset_top = 165.0
+offset_right = 200.0
+offset_bottom = 265.0
+text = "Server
+
+"

player/camera.gd

@@ -0,0 +1,87 @@
+class_name CameraGimbal extends Node3D
+
+@export var rotation_speed = (PI / 180) * 120
+@export var default_zoom = 8
+
+# is mouse captured by game permanently?
+# (i.e. not just holding right click)
+var locked = false
+var mouse_velocity = Vector2.ZERO
+
+var current_zoom = default_zoom
+var zoom_min = 4
+var zoom_max = 80
+var zoom_speed = 20
+
+func _lock():
+	Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
+
+func _unlock():
+	Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
+	mouse_velocity = Vector2.ZERO
+
+func lock():
+	_lock()
+	locked = true
+
+# optional API function for nodes that want
+# to unlock the mouse for a period of time
+func unlock():
+	_unlock()
+	locked = false
+
+func reset():
+	basis = Basis()
+	$InnerGimbal.basis = Basis()
+	current_zoom = default_zoom
+
+# y is before x because the outer gimbal is
+# in charge of rotating the y axis
+func rotate_camera(delta):
+	var y = 0
+	var x = 0
+
+	if mouse_velocity.x > 5 or mouse_velocity.x < -5:
+		y -= clamp(mouse_velocity.x / 12.5, -10, 10)
+	if mouse_velocity.y > 5 or mouse_velocity.y < -5:
+		x -= clamp(mouse_velocity.y / 12.5, -10, 10)
+
+	rotate_object_local(Vector3.UP, y * rotation_speed * delta)
+	$InnerGimbal.rotate_object_local(
+		Vector3.RIGHT, x * rotation_speed * delta)
+	$InnerGimbal.rotation.x = clamp($InnerGimbal.rotation.x, -0.8, 0.7)
+
+func _input(event):
+	if event is InputEventMouseMotion:
+		mouse_velocity = event.relative
+	elif event.is_action_pressed("cam_zoom_out"):
+		current_zoom += 1
+	elif event.is_action_pressed("cam_zoom_in"):
+		current_zoom -= 1
+
+	current_zoom = clamp(current_zoom, zoom_min, zoom_max)
+
+func _process(delta):
+	# rotate camera
+	if locked:
+		rotate_camera(delta)
+	else:
+		if Input.is_mouse_button_pressed(MOUSE_BUTTON_RIGHT):
+			_lock()
+			rotate_camera(delta)
+		else:
+			_unlock()
+
+	# zoom in/out
+	var pos = Vector3($InnerGimbal/Camera3D.position)
+	pos.y = lerp(pos.y, float(current_zoom), zoom_speed * delta)
+	pos.z = lerp(pos.z, float(current_zoom), zoom_speed * delta)
+
+	$InnerGimbal/Camera3D.position = pos
+
+	# reset camera
+	if Input.is_action_pressed("cam_reset"):
+		reset()
+
+func _ready():
+	lock()

player/camera_gimbal.gd

@@ -1,75 +0,0 @@
-class_name CameraGimbal extends Node3D
-
-@export var rotation_speed = (PI / 180) * 120
-@export var shift_lock = false
-
-var locked_mouse_positon = Vector2(0,0)
-var mouse_locked = false
-var mouse_x_velocity = 0
-var mouse_y_velocity = 0
-
-var zoom_min = 4
-var zoom_max = 80
-var zoom_speed = 20
-var current_zoom = 8
-
-func reset():
-	basis = Basis()
-	$InnerGimbal.basis = Basis()
-
-func rotate_camera_y(y, delta):
-	rotate_object_local(Vector3.UP, y * rotation_speed * delta)
-func rotate_camera_x(x, delta):
-	$InnerGimbal.rotate_object_local(
-		Vector3.RIGHT, x * rotation_speed * delta)
-	$InnerGimbal.rotation.x = clamp($InnerGimbal.rotation.x,-0.8,0.7)
-	
-func _input(event):
-	if event is InputEventMouseMotion:
-		mouse_x_velocity = event.relative.x
-		mouse_y_velocity = event.relative.y
-	elif event.is_action_pressed("zoom_out"):
-		current_zoom += 1
-	elif event.is_action_pressed("zoom_in"):
-		current_zoom -= 1
-
-func _process(delta):
- 	# rotate outer gimbal around y axis
-	var y = 0
-	var x = 0
-
-	if Input.is_action_just_pressed("shift_lock"):
-		if shift_lock == true:
-			shift_lock = false
-		else:
-			shift_lock = true
-	elif Input.is_mouse_button_pressed(MOUSE_BUTTON_RIGHT) or shift_lock == true:
-		if mouse_locked == false:
-			mouse_locked = true
-			locked_mouse_positon = get_viewport().get_mouse_position()
-		Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
-
-		if mouse_x_velocity > 5 or mouse_x_velocity < -5:
-			y -= clamp(mouse_x_velocity / 12.5, -10, 10)
-		if mouse_y_velocity > 5 or mouse_y_velocity < -5:
-			x -= clamp(mouse_y_velocity / 12.5, -10, 10)
-	else:
-		Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
-		mouse_locked = false
-		mouse_x_velocity = 0
-		mouse_y_velocity = 0
-
-	rotate_camera_y(y, delta)
-	rotate_camera_x(x, delta)
-
-	# reset gimbals
-	if Input.is_action_pressed("cam_reset"):
-		reset()
-
-	current_zoom = clamp(current_zoom, zoom_min, zoom_max)
-	
-	var pos = Vector3($InnerGimbal/Camera3D.position)
-	pos.y = lerp(pos.y, float(current_zoom), zoom_speed*delta)
-	pos.z = lerp(pos.z, float(current_zoom), zoom_speed*delta)
-	
-	$InnerGimbal/Camera3D.position = pos

player/player.gd

@@ -18,6 +18,11 @@ var target_velocity = Vector3.ZERO
 
 var _health = 100
 
+# Multiplayer
+
+func _enter_tree():
+	set_multiplayer_authority(str(name).to_int())
+	
 # Player UI
 
 func resize_ui():
@@ -239,8 +244,18 @@ func _ready():
 	resize_ui()
 	respawn()
 
+	if is_multiplayer_authority():
+		$CameraGimbal/InnerGimbal/Camera3D.current = true
+	else:
+		$CameraGimbal/InnerGimbal/Camera3D.current = false
+
 func _physics_process(delta):
-	if dead:
+	if dead or not is_multiplayer_authority():
+		return
+	if health() < 1 or position.y <= -1000:
+		die()
+
+	if suspended:
 		return
 
 	if health() < 1 or position.y <= -1000:

player/player.tscn

@@ -1,7 +1,7 @@
-[gd_scene load_steps=8 format=4 uid="uid://cfceg80unq0pe"]
+[gd_scene load_steps=9 format=4 uid="uid://cfceg80unq0pe"]
 
-[ext_resource type="Script" uid="uid://bfflnag3p4gen" path="res://player/player.gd" id="1_onrkg"]
-[ext_resource type="Script" uid="uid://oi6sint7jkc6" path="res://player/camera_gimbal.gd" id="2_onrkg"]
+[ext_resource type="Script" uid="uid://djeyfi7vm2vw0" path="res://player/player.gd" id="1_onrkg"]
+[ext_resource type="Script" uid="uid://oi6sint7jkc6" path="res://player/camera.gd" id="2_onrkg"]
 [ext_resource type="Texture2D" uid="uid://cfb0gbwm57hm4" path="res://models/player_0.png" id="3_hqtel"]
 
 [sub_resource type="BoxShape3D" id="BoxShape3D_onrkg"]
@@ -47,6 +47,32 @@ _surfaces = [{
 }]
 shadow_mesh = SubResource("ArrayMesh_e57bw")
 
+[sub_resource type="SceneReplicationConfig" id="SceneReplicationConfig_g1dw6"]
+properties/0/path = NodePath(".:position")
+properties/0/spawn = true
+properties/0/replication_mode = 1
+properties/1/path = NodePath(".:rotation")
+properties/1/spawn = true
+properties/1/replication_mode = 1
+properties/2/path = NodePath("CameraGimbal:position")
+properties/2/spawn = true
+properties/2/replication_mode = 1
+properties/3/path = NodePath("CameraGimbal:rotation")
+properties/3/spawn = true
+properties/3/replication_mode = 1
+properties/4/path = NodePath("CameraGimbal/InnerGimbal:position")
+properties/4/spawn = true
+properties/4/replication_mode = 1
+properties/5/path = NodePath("CameraGimbal/InnerGimbal:rotation")
+properties/5/spawn = true
+properties/5/replication_mode = 1
+properties/6/path = NodePath("CameraGimbal/InnerGimbal/Camera3D:position")
+properties/6/spawn = true
+properties/6/replication_mode = 1
+properties/7/path = NodePath("CameraGimbal/InnerGimbal/Camera3D:rotation")
+properties/7/spawn = true
+properties/7/replication_mode = 1
+
 [node name="Player" type="CharacterBody3D"]
 collision_layer = 2
 collision_mask = 3
@@ -102,6 +128,9 @@ text = "Pictures of you"
 horizontal_alignment = 2
 vertical_alignment = 2
 
+[node name="MultiplayerSynchronizer" type="MultiplayerSynchronizer" parent="."]
+replication_config = SubResource("SceneReplicationConfig_g1dw6")
+
 [connection signal="child_entered_tree" from="Backpack" to="." method="_on_backpack_child_entered_tree"]
 [connection signal="child_exiting_tree" from="Backpack" to="." method="_on_backpack_child_exiting_tree"]
 [connection signal="timeout" from="RespawnTimer" to="." method="respawn"]

project.godot

@@ -42,26 +42,6 @@ jump={
 "events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":32,"physical_keycode":0,"key_label":0,"unicode":32,"location":0,"echo":false,"script":null)
 ]
 }
-cam_left={
-"deadzone": 0.2,
-"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":4194319,"physical_keycode":0,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
-]
-}
-cam_right={
-"deadzone": 0.2,
-"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":4194321,"physical_keycode":0,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
-]
-}
-cam_up={
-"deadzone": 0.2,
-"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":4194320,"physical_keycode":0,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
-]
-}
-cam_down={
-"deadzone": 0.2,
-"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":4194322,"physical_keycode":0,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
-]
-}
 cam_reset={
 "deadzone": 0.2,
 "events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":79,"physical_keycode":0,"key_label":0,"unicode":111,"location":0,"echo":false,"script":null)
@@ -87,17 +67,12 @@ backpack_3={
 "events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":51,"physical_keycode":0,"key_label":0,"unicode":51,"location":0,"echo":false,"script":null)
 ]
 }
-shift_lock={
-"deadzone": 0.2,
-"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194325,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
-]
-}
-zoom_in={
+cam_zoom_in={
 "deadzone": 0.2,
 "events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":0,"position":Vector2(0, 0),"global_position":Vector2(0, 0),"factor":1.0,"button_index":4,"canceled":false,"pressed":false,"double_click":false,"script":null)
 ]
 }
-zoom_out={
+cam_zoom_out={
 "deadzone": 0.2,
 "events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":0,"position":Vector2(0, 0),"global_position":Vector2(0, 0),"factor":1.0,"button_index":5,"canceled":false,"pressed":false,"double_click":false,"script":null)
 ]

server.gd

@@ -0,0 +1,27 @@
+extends Node3D
+
+@onready var menu = $UI/Menu
+
+const PORT = 9999
+const PLAYER = preload("res://player/player.tscn")
+var peer = ENetMultiplayerPeer.new()
+
+
+
+func _on_server_button_pressed() -> void:
+	menu.hide()
+	peer.create_server(PORT)
+	multiplayer.multiplayer_peer = peer
+	multiplayer.peer_connected.connect(add_player)
+	
+	add_player(multiplayer.get_unique_id())
+	
+func _on_client_button_pressed() -> void:
+	menu.hide()
+	peer.create_client("localhost",PORT)
+	multiplayer.multiplayer_peer = peer
+	
+func add_player(peer_id):
+	var player = PLAYER.instantiate()
+	player.name = str(peer_id)
+	add_child(player)