Getting shaders working with lua.

src/duskrpg/story/storyflag.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 "story/storyflagvalue.h"
+
+/**
+ * Gets the value of a story flag.
+ * 
+ * @param flag The story flag to get.
+ * @return The value of the story flag.
+ */
+#define storyFlagGet(flag) (STORY_FLAG_VALUES[(flag)])
+
+/**
+ * Sets the value of a story flag.
+ * 
+ * @param flag The story flag to set.
+ * @param value The value to set the story flag to.
+ */
+void storyFlagSet(const storyflag_t flag, const storyflagvalue_t value);