Brought over microjrpg cutscene system (partially implemented)

src/rpg/cutscene/item/cutsceneitem.h

@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "cutscenewait.h"
+#include "cutscenecallback.h"
+#include "cutscenetext.h"
+#include "cutscenecutscene.h"
+
+typedef enum {
+  CUTSCENE_ITEM_TYPE_NULL,
+  CUTSCENE_ITEM_TYPE_TEXT,
+  CUTSCENE_ITEM_TYPE_CALLBACK,
+  CUTSCENE_ITEM_TYPE_WAIT,
+  CUTSCENE_ITEM_TYPE_CUTSCENE
+} cutsceneitemtype_t;
+
+typedef struct cutsceneitem_s {
+  cutsceneitemtype_t type;
+
+  // Arguments/Data that will be used when this item is invoked.
+  union {
+    cutscenetext_t text;
+    cutscenecallback_t callback;
+    cutscenewait_t wait;
+    cutscenecutscene_t cutscene;
+  };
+} cutsceneitem_t;
+
+typedef union {
+  cutscenetextdata_t text;
+  cutscenewaitdata_t wait;
+} cutsceneitemdata_t;
+
+/**
+ * Start the given cutscene item.
+ * 
+ * @param item The cutscene item to start.
+ * @param data The cutscene item data storage.
+ */
+void cutsceneItemStart(const cutsceneitem_t *item, cutsceneitemdata_t *data);
+
+/**
+ * Tick the given cutscene item (one frame).
+ * 
+ * @param item The cutscene item to tick.
+ * @param data The cutscene item data storage.
+ */
+void cutsceneItemUpdate(const cutsceneitem_t *item, cutsceneitemdata_t *data);