refactor

systems/building_system.gd

@@ -0,0 +1,92 @@
+extends Node
+
+const BUILDING_SCENE: PackedScene = preload("res://scenes/entities/building/building.tscn")
+const GRID_SIZE: float = 1.0
+
+@onready var inventory_system: Node = get_node("../InventorySystem")
+
+var blueprints: Array = []
+
+func _ready() -> void:
+  blueprints = [
+    {"id": &"floor", "name": "Floor", "size": Vector3(1, 0.2, 1), "color": Color(0.55, 0.4, 0.25), "material": &"wood", "cost": 1},
+    {"id": &"wall", "name": "Wall", "size": Vector3(1, 2, 0.2), "color": Color(0.7, 0.6, 0.45), "material": &"wood", "cost": 1},
+    {"id": &"door", "name": "Door", "size": Vector3(1, 2, 0.15), "color": Color(0.4, 0.25, 0.15), "material": &"wood", "cost": 2},
+    {"id": &"roof", "name": "Roof", "size": Vector3(1, 0.2, 1), "color": Color(0.5, 0.3, 0.2), "material": &"wood", "cost": 1}
+  ]
+
+func _building_root() -> Node3D:
+  var n: Node = get_node_or_null("/root/World/EntityRoot/Buildings")
+  if n == null:
+    n = get_node_or_null("/root/Dungeon/EntityRoot/Buildings")
+  return n
+
+func get_blueprints() -> Array:
+  return blueprints
+
+func find_blueprint(id: StringName) -> Dictionary:
+  for b in blueprints:
+    if b.id == id:
+      return b
+  return {}
+
+func snap_position(pos: Vector3) -> Vector3:
+  return Vector3(round(pos.x / GRID_SIZE) * GRID_SIZE, max(0.0, pos.y), round(pos.z / GRID_SIZE) * GRID_SIZE)
+
+func place(player: Node, id: StringName, pos: Vector3, rot: float) -> bool:
+  if not (multiplayer.is_server() or multiplayer.multiplayer_peer == null):
+    request_place.rpc_id(1, player.get_path(), id, pos, rot)
+    return false
+  var bp: Dictionary = find_blueprint(id)
+  if bp.is_empty():
+    return false
+  var mat: StringName = bp.material
+  var cost: int = bp.cost
+  if inventory_system.get_amount(player, mat) < cost:
+    return false
+  inventory_system.remove_item(player, mat, cost)
+  var root := _building_root()
+  if root == null:
+    return false
+  var b: StaticBody3D = BUILDING_SCENE.instantiate()
+  b.building_id = id
+  b.name = "B_%s_%d" % [str(id), Time.get_ticks_msec() + randi() % 1000]
+  root.add_child(b, true)
+  b.global_position = snap_position(pos)
+  b.rotation.y = rot
+  b.apply_building(id)
+  _apply_building_visual.rpc(b.get_path(), id)
+  EventBus.building_placed.emit(b)
+  return true
+
+func remove(player: Node, b_path: NodePath) -> bool:
+  if not (multiplayer.is_server() or multiplayer.multiplayer_peer == null):
+    request_remove.rpc_id(1, player.get_path(), b_path)
+    return false
+  var node: Node = get_node_or_null(b_path)
+  if node == null:
+    return false
+  var bp: Dictionary = find_blueprint(node.building_id)
+  if not bp.is_empty():
+    inventory_system.add_item(player, bp.material, max(1, int(float(bp.cost) * 0.5)))
+  EventBus.building_removed.emit(node)
+  node.queue_free()
+  return true
+
+@rpc("any_peer", "reliable")
+func request_place(player_path: NodePath, id: StringName, pos: Vector3, rot: float) -> void:
+  var p: Node = get_node_or_null(player_path)
+  if p:
+    place(p, id, pos, rot)
+
+@rpc("any_peer", "reliable")
+func request_remove(player_path: NodePath, b_path: NodePath) -> void:
+  var p: Node = get_node_or_null(player_path)
+  if p:
+    remove(p, b_path)
+
+@rpc("authority", "reliable", "call_local")
+func _apply_building_visual(b_path: NodePath, id: StringName) -> void:
+  var node: Node = get_node_or_null(b_path)
+  if node and node.has_method("apply_building"):
+    node.apply_building(id)