Guide: Making A 2D Game Multiplayer

extends SummerPlayer

@export var speed := 220.0
var local_position := Vector2.ZERO
var is_alive := true

func _ready() -> void:
    set_synced("x", local_position.x)
    set_synced("y", local_position.y)
    set_synced("anim", "idle")

extends SummerGame

func _process(delta: float) -> void:
    super._process(delta)
    if not Summer.is_server():
        return

    for p in get_players():
        _step_2d_player(p, delta)

func _step_2d_player(player, delta: float) -> void:
    var move: Vector2 = player.input.movement
    player.local_position += move.normalized() * player.speed * delta

    player.set_synced("x", player.local_position.x)
    player.set_synced("y", player.local_position.y)
    player.set_synced("anim", "run" if move.length() > 0 else "idle")

func _process(_delta: float) -> void:
    var x = get_synced("x")
    var y = get_synced("y")
    if x != null and y != null:
        $Sprite2D.global_position = Vector2(float(x), float(y))

func _player_joined(player) -> void:
    player.set_synced("x", 0.0)
    player.set_synced("y", 0.0)
    player.set_synced("hp", 100)

func _player_left(player) -> void:
    pass