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65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
//-------------------------------------------------------------------------
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/*
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Copyright (C) 2010-2019 EDuke32 developers and contributors
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Copyright (C) 2019 sirlemonhead, Nuke.YKT
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This file is part of PCExhumed.
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PCExhumed is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License version 2
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as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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//-------------------------------------------------------------------------
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#include "ns.h"
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#include "engine.h"
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#ifndef __WATCOMC__
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#include <cstdlib>
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#include <cmath>
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#else
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#include <stdlib.h>
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#endif
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BEGIN_PS_NS
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// 100% done
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int AngleDiff(DAngle a, DAngle b)
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{
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int diff = (b - a).Buildang();
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if (diff > 1024) {
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diff = 2048 - diff;
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}
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return diff;
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}
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int AngleDelta(int a, int b, int c)
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{
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int diff = b - a;
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if (diff >= 0)
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{
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if (diff > 1024) {
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diff = -(2048 - diff);
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}
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}
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else if (diff < -1024)
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{
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diff += 2048;
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}
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if (abs(diff) > c)
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{
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if (diff < 0) {
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return -diff;
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}
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diff = c;
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}
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return diff;
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}
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END_PS_NS
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