fix comment about 0xFFFF usage

include/save.h

@@ -425,12 +425,7 @@ typedef enum LinkAge {
 // (except for the value 0xFFFD, which is special-cased to do nothing in `Play_Init`).
 // It loads layer 4 for 0xFFF0, layer 5 for 0xFFF1, and so on.
 //
-// The cutsceneIndex could also be set to one of these values to start a
+// 0xFFFD is used by the cutscene system to indicate a scripted cutscene has been triggered.
-// scripted cutscene immediately. In the vanilla game, this is used to play
-// the cutscene where the barrier in Ganon's Castle is dispelled (using index 0xFFFF)
-// and to preview cutscenes in debug mode (using index 0xFFFD).
-//
-// 0xFFFD also is used by the cutscene system to indicate a scripted cutscene has been triggered.
 // This is why `Play_Init` ignores that value, so that if the cutscene is interrupted
 // by a new play state load (e.g. if the player falls out of bounds), it does not then
 // try to wrongly load a cutscene layer.

src/code/z_demo.c

@@ -1391,9 +1391,15 @@ void CutsceneCmd_Destination(PlayState* play, CutsceneContext* csCtx, CsCmdDesti
                     play->csCtx.script = SEGMENTED_TO_VIRTUAL(gTowerBarrierCs);
                     play->csCtx.curFrame = 0;
                     gSaveContext.cutsceneTrigger = 1;
+                    // Force cutsceneIndex to CS_INDEX_F so that CS_STATE_STOP is handled by the "scripted" system's
+                    // CutsceneHandler_StopScript.
+                    // Otherwise, because cutsceneIndex is set to 0 above, CS_STATE_STOP would be handled by the
+                    // "manual" cutscene system's CutsceneHandler_StopManual, which does not terminate the cutscene
+                    // camera, resulting in a softlock.
                     gSaveContext.save.cutsceneIndex = CS_INDEX_F;
                     csCtx->state = CS_STATE_STOP;
                 } else {
+                    // Same as above
                     gSaveContext.save.cutsceneIndex = CS_INDEX_F;
                     csCtx->state = CS_STATE_STOP;
                 }