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https://github.com/mod-playerbots/azerothcore-wotlk.git
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92 lines
2.2 KiB
C++
92 lines
2.2 KiB
C++
/*
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* This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Affero General Public License as published by the
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* Free Software Foundation; either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __AVGDIFFTRACKER_H
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#define __AVGDIFFTRACKER_H
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#include "Common.h"
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#include <cstring>
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#define AVG_DIFF_COUNT 500
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class AvgDiffTracker
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{
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public:
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AvgDiffTracker() : total(0), index(0), average(0) { memset(&tab, 0, sizeof(tab)); max[0] = 0; max[1] = 0; }
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uint32 getAverage()
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{
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return average;
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}
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uint32 getTimeWeightedAverage()
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{
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if (tab[AVG_DIFF_COUNT - 1] == 0)
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return 0;
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uint32 sum = 0, weightsum = 0;
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for (uint32 i = 0; i < AVG_DIFF_COUNT; ++i)
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{
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sum += tab[i] * tab[i];
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weightsum += tab[i];
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}
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return sum / weightsum;
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}
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uint32 getMax()
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{
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return max[0] > max[1] ? max[0] : max[1];
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}
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void Update(uint32 diff)
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{
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if (diff < 1)
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diff = 1;
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total -= tab[index];
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total += diff;
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tab[index] = diff;
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if (diff > max[0])
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max[0] = diff;
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if (++index >= AVG_DIFF_COUNT)
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{
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index = 0;
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max[1] = max[0];
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max[0] = 0;
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}
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if (tab[AVG_DIFF_COUNT - 1])
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average = total / AVG_DIFF_COUNT;
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else if (index)
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average = total / index;
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else
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average = 0;
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}
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private:
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uint32 tab[AVG_DIFF_COUNT];
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uint32 total;
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uint32 index;
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uint32 max[2];
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uint32 average;
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};
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extern AvgDiffTracker avgDiffTracker;
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extern AvgDiffTracker lfgDiffTracker;
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extern AvgDiffTracker devDiffTracker;
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#endif
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