Documentation

scripts/inventory/inventory.gd

@@ -1,22 +1,28 @@
 @abstract
 extends Resource
 
+## Class that can hold items in it
 class_name Inventory
 
 func _init() -> void:
 	resource_local_to_scene = true
 
+## Tries to add an item into inventory. Returns not stored stack of item.
 @abstract
 func add(item : Stack) -> Stack
 
+## Tries to take first item. Returns null if no items in inventory
 @abstract
 func pop() -> Stack
 
+## Tries to take certain item from inventory. Returns null if no item found
 @abstract
 func take(item : Item,amount: int) -> Stack
 
+## Finds first entry of item. Returns -1 if no item found
 @abstract
 func find(item : Item) -> int
 
+## Does inventory have certain item?
 func has(item : Item) -> bool:
 	return find(item) != -1

scripts/inventory/inventory_slot.gd

@@ -28,7 +28,11 @@ class_name InventorySlot
 	get:
 		return amount
 
+## Get some amount of items from slot. Returns null if slot is empty
 func extract_stack(extract_amount: int) -> Stack:
+	if amount == 0:
+		return null
+	
 	var return_stack : Stack
 	if extract_amount > amount:
 		return_stack = Stack.new(held_item,amount)
@@ -39,12 +43,17 @@ func extract_stack(extract_amount: int) -> Stack:
 	
 	return return_stack
 
+## Extract entire stack from slot. Returns null if slot is empty
 func extract() -> Stack:
+	if amount == 0:
+		return null
+	
 	var return_stack : Stack = Stack.new(held_item,amount)
 	self.amount = 0
 	
 	return return_stack
 
+## Add provided stack's amount to this amount. Returns null if stack is empty or items arent matching
 func merge_stack(stack: Stack) -> Stack:
 	if held_item == null:
 		held_item = stack.held_item

scripts/inventory/stack.gd

@@ -1,11 +1,15 @@
 extends RefCounted
 
+## Structure of item and amount of it. Basic object that more complex exchange
+
 class_name Stack
 
 func _init(item: Item = null, amount: int = 0) -> void:
 	held_item = item
 	self.amount = amount
 
+## Item in stack
 @export_storage var held_item : Item
 
+## Amount of items in stack
 @export_storage var amount : int

scripts/inventory/storage.gd

@@ -1,8 +1,11 @@
 @tool
 extends Inventory
 
+## Base class for simple storages with no differentiation.
+
 class_name Storage
 
+## Amount of stacks that can be held in storage
 @export var capacity : int:
 	set(value):
 		if value < 0:
@@ -16,14 +19,17 @@ class_name Storage
 	get:
 		return capacity
 
+## :3
 @export_storage var internal_array : Array[InventorySlot] = []
 
+## Finds first entry of item. Returns -1 if no item found
 func find(item : Item) -> int:
 	for i in range(len(internal_array)):
 		if internal_array[i].held_item == item:
 			return i
 	return -1
 
+## Tries to add an item into inventory. Returns not stored stack of item.
 func add(stack: Stack) -> Stack:
 	var found_index : int = find(stack.held_item)
 	if found_index != -1:
@@ -37,12 +43,14 @@ func add(stack: Stack) -> Stack:
 			return null
 	return stack
 
+## Tries to take first item. Returns null if no items in inventory
 func pop() -> Stack:
 	for i in range(len(internal_array)):
 		if internal_array[i].held_item != null:
 			return internal_array[i].extract()
 	return null
 
+## Tries to take certain item from inventory. Returns null if no item found
 func take(item: Item,amount: int) -> Stack:
 	var found = find(item)
 	if found == -1:

scripts/item.gd

@@ -1,7 +1,14 @@
 extends Resource
 
+## Base unit of manipulated objects
+
 class_name Item
 
+## Name of item that is displayed
 @export var display_name : StringName
+
+## Preview in UI
 @export var preview : Texture2D
+
+## Maximum amount of items that can be held in inventory
 @export var stack_size : int