From 646d050dd03768002361d2c301c3d44fb09a9014 Mon Sep 17 00:00:00 2001
From: Valansch <Mail@maikwild.de>
Date: Fri, 28 Sep 2018 18:42:36 +0200
Subject: [PATCH] Round math.sin instead of approximating it

---
 utils/math_fix.lua | 19 +++++--------------
 1 file changed, 5 insertions(+), 14 deletions(-)

diff --git a/utils/math_fix.lua b/utils/math_fix.lua
index 2bc176a7..2ee9630b 100644
--- a/utils/math_fix.lua
+++ b/utils/math_fix.lua
@@ -1,20 +1,11 @@
-local tau = 2 * math.pi
-local half_pi = math.pi / 2
+local _sin = math.sin
+local _cos = math.cos
 
 math.sin = function(x)
-  local sign = 1
-  x = (x / tau * 360) % 360
-  if x < 0 then 
-    x = - x
-    sign = - sign
-  end
-  if x > 180 then sign = - sign end
-  x = x % 180
-  if x == 0 then return 0 end
-  local a = x * (180 - x)
-  return sign * 4 * a / (40500 - a)
+     return math.floor(_sin(x) * 10000000 + 0.5) / 10000000
 end
 
+
 math.cos = function(x)
-   return math.sin(x + half_pi)
+     return math.floor(_cos(x) * 10000000 + 0.5) / 10000000
 end