Add a TODO entry

1 files changed, 3 insertions, 0 deletions

diff --git a/priority_queue.c b/priority_queue.c
index e4dca9a..de6c179 100644
--- a/priority_queue.c
+++ b/priority_queue.c
@@ -11,6 +11,9 @@ PositionPQ *ppq_new(Position pos, size_t priority) {
     return ppq;
 }
 
+/* TODO: we need to handle if a pos is already in ppq, but this time we have it with better priority.
+ * I think we need to implement ppq_remove(*ppq, pos), which'll see if pos is in ppq and will remove it.
+ * Then we call it where we return PPQ_INSERT_SUCCESS, but before we actually insert the pos. */
 int ppq_insert(PositionPQ **ppq, Position pos, size_t priority) {
     //printf("Inserting %zu %zu\n", pos.x, pos.y);
     PositionPQ *start = *ppq;