Add ability to choose maps via args + create more maps + don't insert elements into a PPQ if there's one with better priority

1 files changed, 6 insertions, 1 deletions

diff --git a/priority_queue.c b/priority_queue.c
index c8bd8b0..472f5c3 100644
--- a/priority_queue.c
+++ b/priority_queue.c
@@ -12,6 +12,7 @@ PositionPQ *ppq_new(Position pos, size_t priority) {
     return ppq;
 }
 
+/* FIXME: this is shitty */
 void ppq_insert(PositionPQ **ppq, Position pos, size_t priority) {
     PositionPQ *start = *ppq;
 
@@ -29,8 +30,12 @@ void ppq_insert(PositionPQ **ppq, Position pos, size_t priority) {
 
     PositionPQ *temp = *ppq;
 
-    while(temp->next != NULL && temp->next->priority <= priority)
+    while(temp->next != NULL && temp->next->priority <= priority) {
+        if (temp->pos.x == pos.x && temp->pos.y == pos.y && temp->priority <= priority) {
+            return; /* pos is already at the start of ppq with a fine priority */
+        }
         temp = temp->next;
+    }
 
     n->next = temp->next;
     temp->next = n;