From 28bbc7dc835443fe0779e00fef020130e93b65ea Mon Sep 17 00:00:00 2001
From: Andrei Prykhodko <whiterandrek@gmail.com>
Date: Thu, 1 Oct 2020 22:24:16 +0300
Subject: [PATCH] PETKA: use math constants

---
 engines/petka/walk.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/engines/petka/walk.cpp b/engines/petka/walk.cpp
index d9ff2bfccb3..592faa8018e 100644
--- a/engines/petka/walk.cpp
+++ b/engines/petka/walk.cpp
@@ -32,11 +32,11 @@ namespace Petka {
 
 const char *const wayPrefixes[] = {"-w-n.", "-w-ne.", "-w-e.", "-w-se.", "-w-s.", "-w-sw.", "-w-w.", "-w-nw."};
 
-const double kPI = 3.14159265;
-const double k2PI = kPI + kPI;
-const double kHalfPI = kPI / 2;
+const double kPI = M_PI;
+const double k2PI = M_PI * 2;
+const double kHalfPI = M_PI_2;
 
-const double kPiArray[] = {kPI * 0.5, kPI * 0.25, 0.0, kPI * -0.25, kPI * -0.5, kPI * -0.75, kPI, kPI * 0.75};
+const double kPiArray[] = {M_PI_2, M_PI_4, 0.0, -M_PI_4, -M_PI_2, -3 * M_PI_4, M_PI, 3 * M_PI_4};
 
 Walk::Walk(int id) { // CHECKED
 	QManager *mgr = g_vm->resMgr();