Getting shaders working with lua.

src/duskrpg/script/module/item/moduleitem.h

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+/**
+ * Copyright (c) 2026 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "script/scriptcontext.h"
+
+/**
+ * Register item functions to the given script context.
+ * 
+ * @param context The script context to register item functions to.
+ */
+void moduleItem(scriptcontext_t *context);
+
+/**
+ * Script binding for checking if an item exists in an inventory.
+ * 
+ * @param L The Lua state.
+ * @return Number of return values on the Lua stack.
+ */
+int moduleInventoryItemExists(lua_State *L);
+
+/**
+ * Script binding for adding an item to an inventory.
+ * 
+ * @param L The Lua state.
+ * @return Number of return values on the Lua stack.
+ */
+int moduleInventorySet(lua_State *L);
+
+/**
+ * Script binding for setting the quantity of an item in an inventory.
+ * 
+ * @param L The Lua state.
+ * @return Number of return values on the Lua stack.
+ */
+int moduleInventoryAdd(lua_State *L);
+
+/**
+ * Script binding for removing an item from an inventory.
+ * 
+ * @param L The Lua state.
+ * @return Number of return values on the Lua stack.
+ */
+int moduleInventoryRemove(lua_State *L);
+
+/**
+ * Script binding for getting the count of an item in an inventory.
+ * 
+ * @param L The Lua state.
+ * @return Number of return values on the Lua stack.
+ */
+int moduleInventoryGetCount(lua_State *L);
+
+/**
+ * Script binding for checking if an inventory is full.
+ * 
+ * @param L The Lua state.
+ * @return Number of return values on the Lua stack.
+ */
+int moduleInventoryIsFull(lua_State *L);
+
+/**
+ * Script binding for checking if an item stack in an inventory is full.
+ * 
+ * @param L The Lua state.
+ * @return Number of return values on the Lua stack.
+ */
+int moduleInventoryItemFull(lua_State *L);
+
+/**
+ * Script binding for sorting an inventory.
+ * 
+ * @param L The Lua state.
+ * @return Number of return values on the Lua stack.
+ */
+int moduleInventorySort(lua_State *L);