refactor

systems/crafting_system.gd

@@ -0,0 +1,49 @@
+extends Node
+
+@onready var inventory_system: Node = get_node("../InventorySystem")
+
+var recipes: Array = []
+
+func _ready() -> void:
+  recipes = [
+    {"id": &"wood", "name": "Wood", "out_count": 1, "inputs": {&"essence": 1}},
+    {"id": &"stone", "name": "Stone", "out_count": 1, "inputs": {&"essence": 2}},
+    {"id": &"iron", "name": "Iron", "out_count": 1, "inputs": {&"essence": 5}},
+    {"id": &"sword", "name": "Sword", "out_count": 1, "inputs": {&"iron": 3, &"wood": 1}},
+  ]
+
+func get_recipes() -> Array:
+  return recipes
+
+func can_craft(player: Node, recipe: Dictionary) -> bool:
+  for input_id in recipe.inputs.keys():
+    if inventory_system.get_amount(player, input_id) < recipe.inputs[input_id]:
+      return false
+  return true
+
+func craft(player: Node, recipe_id: StringName) -> bool:
+  if not (multiplayer.is_server() or multiplayer.multiplayer_peer == null):
+    request_craft.rpc_id(1, player.get_path(), recipe_id)
+    return false
+  var recipe: Dictionary = _find_recipe(recipe_id)
+  if recipe.is_empty():
+    return false
+  if not can_craft(player, recipe):
+    return false
+  for input_id in recipe.inputs.keys():
+    inventory_system.remove_item(player, input_id, recipe.inputs[input_id])
+  inventory_system.add_item(player, recipe.id, recipe.out_count)
+  EventBus.item_crafted.emit(player, recipe.id)
+  return true
+
+@rpc("any_peer", "reliable")
+func request_craft(path: NodePath, recipe_id: StringName) -> void:
+  var player: Node = get_node_or_null(path)
+  if player:
+    craft(player, recipe_id)
+
+func _find_recipe(id: StringName) -> Dictionary:
+  for r in recipes:
+    if r.id == id:
+      return r
+  return {}