From 4b0e38669128b4253214d84f2eefc5b13b0bfc90 Mon Sep 17 00:00:00 2001
From: Andre Padez <andre.padez@gmail.com>
Date: Thu, 30 Oct 2025 22:41:52 +0000
Subject: [PATCH] =?UTF-8?q?fix(phase1.2b):=20adjust=20key=20buffer=20logic?=
 =?UTF-8?q?=20to=20allow=20180=C2=B0=20reversals?=
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- Change buffer validation from lastMovedDirection to currentDirection
- This allows 180° reversals across frames (they're safe if you have space)
- Only blocks immediate 180° within same frame (would cause self-collision)
- Removes overly restrictive direction blocking
- Player can now freely turn in any direction between moves
- Should fix the 'impossible to turn' and 'immediate death' issues
---
 src/useCursor/useCursor.ts | 19 +++++--------------
 1 file changed, 5 insertions(+), 14 deletions(-)

diff --git a/src/useCursor/useCursor.ts b/src/useCursor/useCursor.ts
index 95a3139..d18648a 100755
--- a/src/useCursor/useCursor.ts
+++ b/src/useCursor/useCursor.ts
@@ -97,18 +97,8 @@ export function useCursor(
   };
 
   const changeDirection = (newDirection: Direction) => {
-    const opposites: Record<Direction, Direction> = {
-      up: "down",
-      down: "up",
-      left: "right",
-      right: "left",
-    };
-
-    // Buffer the direction instead of applying immediately
-    // Only buffer if it's not a 180° reversal of the last MOVED direction
-    if (opposites[lastMovedDirectionRef.current] !== newDirection) {
-      nextDirectionRef.current = newDirection;
-    }
+    // Simply buffer the direction - apply validation on next move
+    nextDirectionRef.current = newDirection;
   };
 
   const applyBufferedDirection = () => {
@@ -122,8 +112,9 @@ export function useCursor(
       right: "left",
     };
 
-    // Apply buffer only if still valid (not 180° reversal)
-    if (opposites[lastMovedDirectionRef.current] !== newDirection) {
+    // Only prevent immediate 180° reversal (would cause self-collision on same frame)
+    // This is the CURRENT direction, not the last moved direction
+    if (opposites[directionRef.current] !== newDirection) {
       setDirection(newDirection);
       directionRef.current = newDirection;
       nextDirectionRef.current = null;