Backpack changes

src/dusk/rpg/item/backpack.c

@@ -7,9 +7,72 @@
 
 #include "backpack.h"
 
-inventorystack_t BACKPACK_STORAGE[BACKPACK_STORAGE_SIZE_MAX];
-inventory_t BACKPACK;
+backpack_t BACKPACK;
 
 void backpackInit() {
-  inventoryInit(&BACKPACK, BACKPACK_STORAGE, BACKPACK_STORAGE_SIZE_MAX);
+  for(uint8_t i = 0; i < ITEM_TYPE_COUNT; i++) {
+    inventoryInit(
+      &BACKPACK.inventories[i],
+      BACKPACK.storage[i],
+      ITEM_TYPE_COUNT_MAX
+    );
+  }
+}
+
+inventory_t *backpackGetInventory(const itemtype_t type) {
+  assertTrue(type > ITEM_TYPE_NULL, "Item type must not be null");
+  assertTrue(type < ITEM_TYPE_COUNT, "Item type out of range");
+  return &BACKPACK.inventories[type];
+}
+
+void backpackAdd(const itemid_t item, const uint8_t quantity) {
+  assertTrue(item > ITEM_ID_NULL, "Item ID must not be null");
+  assertTrue(item < ITEM_ID_COUNT, "Item ID out of range");
+  inventoryAdd(backpackGetInventory(ITEMS[item].type), item, quantity);
+}
+
+void backpackRemove(const itemid_t item) {
+  assertTrue(item > ITEM_ID_NULL, "Item ID must not be null");
+  assertTrue(item < ITEM_ID_COUNT, "Item ID out of range");
+  inventoryRemove(backpackGetInventory(ITEMS[item].type), item);
+}
+
+void backpackSet(const itemid_t item, const uint8_t quantity) {
+  assertTrue(item > ITEM_ID_NULL, "Item ID must not be null");
+  assertTrue(item < ITEM_ID_COUNT, "Item ID out of range");
+  inventorySet(backpackGetInventory(ITEMS[item].type), item, quantity);
+}
+
+uint8_t backpackGetCount(const itemid_t item) {
+  assertTrue(item > ITEM_ID_NULL, "Item ID must not be null");
+  assertTrue(item < ITEM_ID_COUNT, "Item ID out of range");
+  return inventoryGetCount(backpackGetInventory(ITEMS[item].type), item);
+}
+
+bool_t backpackItemExists(const itemid_t item) {
+  assertTrue(item > ITEM_ID_NULL, "Item ID must not be null");
+  assertTrue(item < ITEM_ID_COUNT, "Item ID out of range");
+  return inventoryItemExists(backpackGetInventory(ITEMS[item].type), item);
+}
+
+bool_t backpackIsFull(const itemtype_t type) {
+  assertTrue(type > ITEM_TYPE_NULL, "Item type must not be null");
+  assertTrue(type < ITEM_TYPE_COUNT, "Item type out of range");
+  return inventoryIsFull(backpackGetInventory(type));
+}
+
+bool_t backpackItemFull(const itemid_t item) {
+  assertTrue(item > ITEM_ID_NULL, "Item ID must not be null");
+  assertTrue(item < ITEM_ID_COUNT, "Item ID out of range");
+  return inventoryItemFull(backpackGetInventory(ITEMS[item].type), item);
+}
+
+void backpackSort(
+  const itemtype_t type,
+  const inventorysort_t sortBy,
+  const bool_t reverse
+) {
+  assertTrue(type > ITEM_TYPE_NULL, "Item type must not be null");
+  assertTrue(type < ITEM_TYPE_COUNT, "Item type out of range");
+  inventorySort(backpackGetInventory(type), sortBy, reverse);
 }

src/dusk/rpg/item/backpack.h

@@ -8,12 +8,90 @@
 #pragma once
 #include "inventory.h"
 
-#define BACKPACK_STORAGE_SIZE_MAX 20
+typedef struct {
+  inventorystack_t storage[ITEM_TYPE_COUNT][ITEM_TYPE_COUNT_MAX];
+  inventory_t inventories[ITEM_TYPE_COUNT];
+} backpack_t;
 
-extern inventorystack_t BACKPACK_STORAGE[BACKPACK_STORAGE_SIZE_MAX];
-extern inventory_t BACKPACK;
+extern backpack_t BACKPACK;
 
 /**
  * Initializes the backpack inventory for the player.
  */
-void backpackInit();
+void backpackInit();
+
+/**
+ * Returns the inventory for a given item type.
+ *
+ * @param type The item type.
+ * @returns Pointer to the inventory for that type.
+ */
+inventory_t *backpackGetInventory(const itemtype_t type);
+
+/**
+ * Adds a quantity of an item to the backpack.
+ *
+ * @param item The item ID to add.
+ * @param quantity The quantity to add.
+ */
+void backpackAdd(const itemid_t item, const uint8_t quantity);
+
+/**
+ * Removes an item from the backpack.
+ *
+ * @param item The item ID to remove.
+ */
+void backpackRemove(const itemid_t item);
+
+/**
+ * Sets the quantity of an item in the backpack.
+ *
+ * @param item The item ID to set.
+ * @param quantity The quantity to set.
+ */
+void backpackSet(const itemid_t item, const uint8_t quantity);
+
+/**
+ * Gets the quantity of an item in the backpack.
+ *
+ * @param item The item ID to check.
+ * @returns The quantity held.
+ */
+uint8_t backpackGetCount(const itemid_t item);
+
+/**
+ * Checks if an item exists in the backpack (quantity > 0).
+ *
+ * @param item The item ID to check.
+ * @returns true if the item exists.
+ */
+bool_t backpackItemExists(const itemid_t item);
+
+/**
+ * Checks if the inventory for a given type is full.
+ *
+ * @param type The item type to check.
+ * @returns true if the type's inventory is full.
+ */
+bool_t backpackIsFull(const itemtype_t type);
+
+/**
+ * Checks if an item's stack is full in the backpack.
+ *
+ * @param item The item ID to check.
+ * @returns true if the item stack is full.
+ */
+bool_t backpackItemFull(const itemid_t item);
+
+/**
+ * Sorts the inventory for a given item type.
+ *
+ * @param type The item type whose inventory to sort.
+ * @param sortBy The sorting criteria.
+ * @param reverse Whether to sort in reverse order.
+ */
+void backpackSort(
+  const itemtype_t type,
+  const inventorysort_t sortBy,
+  const bool_t reverse
+);