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daoge_cmd 2026-03-01 12:16:08 +08:00
parent def8cb4153
commit b691c43c44
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72
Minecraft.World/WeighedRandom.cpp Normal file
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#include "stdafx.h"
#include "WeighedRandom.h"
int WeighedRandom::getTotalWeight(vector<WeighedRandomItem *> *items)
{
int totalWeight = 0;
for( AUTO_VAR(it, items->begin()); it != items->end(); it++ )
{
totalWeight += (*it)->randomWeight;
}
return totalWeight;
}
WeighedRandomItem *WeighedRandom::getRandomItem(Random *random, vector<WeighedRandomItem *> *items, int totalWeight)
{
if (totalWeight <= 0)
{
__debugbreak();
}
int selection = random->nextInt(totalWeight);
for( AUTO_VAR(it, items->begin()); it != items->end(); it++ )
{
selection -= (*it)->randomWeight;
if (selection < 0)
{
return *it;
}
}
return NULL;
}
WeighedRandomItem *WeighedRandom::getRandomItem(Random *random, vector<WeighedRandomItem *> *items)
{
return getRandomItem(random, items, getTotalWeight(items));
}
int WeighedRandom::getTotalWeight(WeighedRandomItemArray items)
{
int totalWeight = 0;
for( unsigned int i = 0; i < items.length; i++ )
{
totalWeight += items[i]->randomWeight;
}
return totalWeight;
}
WeighedRandomItem *WeighedRandom::getRandomItem(Random *random, WeighedRandomItemArray items, int totalWeight)
{
if (totalWeight <= 0)
{
__debugbreak();
}
int selection = random->nextInt(totalWeight);
for( unsigned int i = 0; i < items.length; i++ )
{
selection -= items[i]->randomWeight;
if (selection < 0)
{
return items[i];
}
}
return NULL;
}
WeighedRandomItem *WeighedRandom::getRandomItem(Random *random, WeighedRandomItemArray items)
{
return getRandomItem(random, items, getTotalWeight(items));
}