shithub: puzzles

Info  •  Files  •  Log  •  Branches

Distinguish MOVE_UNUSED from MOVE_NO_EFFECT in Inertia

--- a/inertia.c

+++ b/inertia.c

@@ -1635,7 +1635,7 @@

 	dir = state->soln->list[state->solnpos];

     if (dir < 0)

-	return NULL;

+	return MOVE_UNUSED;

     /*

      * Reject the move if we can't make it at all due to a wall

@@ -1642,13 +1642,13 @@

      * being in the way.

      */

     if (AT(w, h, state->grid, state->px+DX(dir), state->py+DY(dir)) == WALL)

-	return NULL;

+	return MOVE_NO_EFFECT;

     /*

      * Reject the move if we're dead!

      */

     if (state->dead)

-	return NULL;

+	return MOVE_NO_EFFECT;

     /*

      * Otherwise, we can make the move. All we need to specify is