From 528841328da0114981ee6e8c6dbdde72b64fb284 Mon Sep 17 00:00:00 2001
From: Kirill Petrashin <kirill8201@yandex.ru>
Date: Sat, 14 Mar 2026 14:42:14 +0300
Subject: Fix stack + implement rbt_maze_map()

---
 stack.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

(limited to 'stack.c')

diff --git a/stack.c b/stack.c
index bcdfbd3..cf169c5 100644
--- a/stack.c
+++ b/stack.c
@@ -7,14 +7,16 @@ PositionStack ps_new(void) {
     return ps;
 }
 
-int ps_push(PositionStack ps, Position pos) {
-    ps.arr[ps.top] = pos;
-    ps.top += 1;
+int ps_push(PositionStack *ps, Position pos) {
+    //TODO: check for stack overflow
+    ps->arr[ps->top] = pos;
+    ps->top += 1;
+    return 0;
 }
 
-Position ps_pop(PositionStack ps) {
-    ps.top -= 1;
-    return ps.arr[ps.top];
+Position ps_pop(PositionStack *ps) {
+    ps->top -= 1;
+    return ps->arr[ps->top];
 }
 
 Position ps_peek(PositionStack ps) {
-- 
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