From 9d93f30426921a8b48ef6a57cf92879d9cd2a67c Mon Sep 17 00:00:00 2001
From: Kistaro Windrider <kistaro@gmail.com>
Date: Fri, 23 Dec 2022 00:02:02 -0800
Subject: [PATCH] Fix crate math.

I forgot that -1 & 1 = 1 rather than 0 so all the bit math didn't work. But I can fix it with polynomial algebra! this is much better.
---
 chameleonic.p8 | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/chameleonic.p8 b/chameleonic.p8
index 498cf3f..a711592 100644
--- a/chameleonic.p8
+++ b/chameleonic.p8
@@ -502,11 +502,7 @@ function level:get_latch(dx,dy,px,py)
  local dx1,dy1=-sgn0(dx),-sgn0(dy)
 
  if crate then
-  if crate.def & (
-    dy1 >>> 15 | 
-    (dy1 & 0x1) << 2 |
-    (dx1 & 0x8000) >>> 12 |
-    (dx1 & 0x1) << 1) ~= 0 then
+  if crate.def & dy1*dy1*(2.5+1.5*dy1)+dx1*dx1*(5-3*dx1) ~= 0 then
    return {
     el="crate",
     dx=dx1,dy=dy1,