flewkey/cuberite-2a
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FastRandom rewrite (#3754)

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This commit is contained in:
peterbell10
2017-06-13 20:35:30 +01:00
committed by Lukas Pioch
parent 9b0eb118b3
commit 360d8eade0
63 changed files with 467 additions and 417 deletions
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64
src/World.cpp
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@@ -245,22 +245,20 @@ void cWorld::CastThunderbolt (int a_BlockX, int a_BlockY, int a_BlockZ)
int cWorld::GetDefaultWeatherInterval(eWeather a_Weather)
{
auto & Random = GetRandomProvider();
switch (a_Weather)
{
case eWeather_Sunny:
{
auto dif = m_MaxSunnyTicks - m_MinSunnyTicks + 1;
return m_MinSunnyTicks + (m_TickRand.randInt() % dif);
return Random.RandInt(m_MinSunnyTicks, m_MaxSunnyTicks);
}
case eWeather_Rain:
{
auto dif = m_MaxRainTicks - m_MinRainTicks + 1;
return m_MinRainTicks + (m_TickRand.randInt() % dif);
return Random.RandInt(m_MinRainTicks, m_MaxRainTicks);
}
case eWeather_ThunderStorm:
{
auto dif = m_MaxThunderStormTicks - m_MinThunderStormTicks + 1;
return m_MinThunderStormTicks + (m_TickRand.randInt() % dif);
return Random.RandInt(m_MinThunderStormTicks, m_MaxThunderStormTicks);
}
}
@@ -812,7 +810,7 @@ eWeather cWorld::ChooseNewWeather()
case eWeather_Rain:
{
// 1 / 8 chance of turning into a thunderstorm
return ((m_TickRand.randInt() % 256) < 32) ? eWeather_ThunderStorm : eWeather_Sunny;
return GetRandomProvider().RandBool(0.125) ? eWeather_ThunderStorm : eWeather_Sunny;
}
}
@@ -1074,7 +1072,7 @@ void cWorld::TickWeather(float a_Dt)
if (m_Weather == eWeather_ThunderStorm)
{
// 0.5% chance per tick of thunderbolt
if (m_TickRand.randInt() % 199 == 0)
if (GetRandomProvider().RandBool(0.005))
{
CastThunderbolt(0, 0, 0); // TODO: find random positions near players to cast thunderbolts.
}
@@ -1697,7 +1695,7 @@ void cWorld::GrowTreeImage(const sSetBlockVector & a_Blocks)
bool cWorld::GrowRipePlant(int a_BlockX, int a_BlockY, int a_BlockZ, bool a_IsByBonemeal)
{
cFastRandom random;
auto & random = GetRandomProvider();
BLOCKTYPE BlockType;
NIBBLETYPE BlockMeta;
GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, BlockType, BlockMeta);
@@ -1735,7 +1733,7 @@ bool cWorld::GrowRipePlant(int a_BlockX, int a_BlockY, int a_BlockZ, bool a_IsBy
}
else
{
BlockMeta += random.NextInt(4) + 2;
BlockMeta += random.RandInt(2, 5);
BlockMeta = std::min(BlockMeta, static_cast<NIBBLETYPE>(7));
}
FastSetBlock(a_BlockX, a_BlockY, a_BlockZ, BlockType, BlockMeta);
@@ -1770,7 +1768,7 @@ bool cWorld::GrowRipePlant(int a_BlockX, int a_BlockY, int a_BlockZ, bool a_IsBy
}
else
{
BlockMeta += random.NextInt(4) + 2;
BlockMeta += random.RandInt(2, 5);
BlockMeta = std::min(BlockMeta, static_cast<NIBBLETYPE>(7));
}
FastSetBlock(a_BlockX, a_BlockY, a_BlockZ, BlockType, BlockMeta);
@@ -1793,7 +1791,7 @@ bool cWorld::GrowRipePlant(int a_BlockX, int a_BlockY, int a_BlockZ, bool a_IsBy
}
else
{
BlockMeta += random.NextInt(4) + 2;
BlockMeta += random.RandInt(2, 5);
BlockMeta = std::min(BlockMeta, static_cast<NIBBLETYPE>(7));
}
FastSetBlock(a_BlockX, a_BlockY, a_BlockZ, BlockType, BlockMeta);
@@ -1825,7 +1823,7 @@ bool cWorld::GrowRipePlant(int a_BlockX, int a_BlockY, int a_BlockZ, bool a_IsBy
}
else
{
BlockMeta += random.NextInt(4) + 2;
BlockMeta += random.RandInt(2, 5);
BlockMeta = std::min(BlockMeta, static_cast<NIBBLETYPE>(7));
}
FastSetBlock(a_BlockX, a_BlockY, a_BlockZ, BlockType, BlockMeta);
@@ -1848,7 +1846,7 @@ bool cWorld::GrowRipePlant(int a_BlockX, int a_BlockY, int a_BlockZ, bool a_IsBy
}
else
{
BlockMeta += random.NextInt(4) + 2;
BlockMeta += random.RandInt(2, 5);
BlockMeta = std::min(BlockMeta, static_cast<NIBBLETYPE>(7));
}
FastSetBlock(a_BlockX, a_BlockY, a_BlockZ, BlockType, BlockMeta);
@@ -1884,14 +1882,14 @@ bool cWorld::GrowRipePlant(int a_BlockX, int a_BlockY, int a_BlockZ, bool a_IsBy
{
++GrowState;
}
else if (random.NextInt(99) < 45)
else if (random.RandBool(0.45))
{
++GrowState;
}
FastSetBlock(a_BlockX, a_BlockY, a_BlockZ, BlockType, static_cast<NIBBLETYPE>(GrowState << 3 | TypeMeta));
}
else if (random.NextInt(99) < 45)
else if (random.RandBool(0.45))
{
GrowTreeFromSapling(a_BlockX, a_BlockY, a_BlockZ, BlockMeta);
}
@@ -1905,12 +1903,12 @@ bool cWorld::GrowRipePlant(int a_BlockX, int a_BlockY, int a_BlockZ, bool a_IsBy
{
return false;
}
MTRand r1;
auto & r1 = GetRandomProvider();
for (int i = 0; i < 60; i++)
{
int OfsX = static_cast<int>(r1.randInt(3) + r1.randInt(3) + r1.randInt(3) + r1.randInt(3)) / 2 - 3;
int OfsY = static_cast<int>(r1.randInt(3) + r1.randInt(3)) - 3;
int OfsZ = static_cast<int>(r1.randInt(3) + r1.randInt(3) + r1.randInt(3) + r1.randInt(3)) / 2 - 3;
int OfsX = (r1.RandInt(3) + r1.RandInt(3) + r1.RandInt(3) + r1.RandInt(3)) / 2 - 3;
int OfsY = r1.RandInt(3) + r1.RandInt(3) - 3;
int OfsZ = (r1.RandInt(3) + r1.RandInt(3) + r1.RandInt(3) + r1.RandInt(3)) / 2 - 3;
BLOCKTYPE Ground = GetBlock(a_BlockX + OfsX, a_BlockY + OfsY, a_BlockZ + OfsZ);
if (Ground != E_BLOCK_GRASS)
{
@@ -1923,7 +1921,7 @@ bool cWorld::GrowRipePlant(int a_BlockX, int a_BlockY, int a_BlockZ, bool a_IsBy
}
BLOCKTYPE SpawnType;
NIBBLETYPE SpawnMeta = 0;
switch (r1.randInt(10))
switch (r1.RandInt(10))
{
case 0: SpawnType = E_BLOCK_YELLOW_FLOWER; break;
case 1: SpawnType = E_BLOCK_RED_ROSE; break;
@@ -2031,8 +2029,7 @@ int cWorld::GrowCactus(int a_BlockX, int a_BlockY, int a_BlockZ, int a_NumBlocks
bool cWorld::GrowMelonPumpkin(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType)
{
MTRand Rand;
return m_ChunkMap->GrowMelonPumpkin(a_BlockX, a_BlockY, a_BlockZ, a_BlockType, Rand);
return m_ChunkMap->GrowMelonPumpkin(a_BlockX, a_BlockY, a_BlockZ, a_BlockType);
}
@@ -2162,6 +2159,7 @@ bool cWorld::WriteBlockArea(cBlockArea & a_Area, int a_MinBlockX, int a_MinBlock
void cWorld::SpawnItemPickups(const cItems & a_Pickups, double a_BlockX, double a_BlockY, double a_BlockZ, double a_FlyAwaySpeed, bool IsPlayerCreated)
{
auto & Random = GetRandomProvider();
a_FlyAwaySpeed /= 100; // Pre-divide, so that we don't have to divide each time inside the loop
for (cItems::const_iterator itr = a_Pickups.begin(); itr != a_Pickups.end(); ++itr)
{
@@ -2171,9 +2169,9 @@ void cWorld::SpawnItemPickups(const cItems & a_Pickups, double a_BlockX, double
continue;
}
float SpeedX = static_cast<float>(a_FlyAwaySpeed * (GetTickRandomNumber(10) - 5));
float SpeedY = static_cast<float>(a_FlyAwaySpeed * GetTickRandomNumber(50));
float SpeedZ = static_cast<float>(a_FlyAwaySpeed * (GetTickRandomNumber(10) - 5));
float SpeedX = static_cast<float>(a_FlyAwaySpeed * Random.RandInt(-5, 5));
float SpeedY = static_cast<float>(a_FlyAwaySpeed * Random.RandInt(50));
float SpeedZ = static_cast<float>(a_FlyAwaySpeed * Random.RandInt(-5, 5));
cPickup * Pickup = new cPickup(
a_BlockX, a_BlockY, a_BlockZ,
@@ -2310,10 +2308,11 @@ UInt32 cWorld::SpawnPrimedTNT(double a_X, double a_Y, double a_Z, int a_FuseTick
TNT = nullptr;
return cEntity::INVALID_ID;
}
auto & Random = GetRandomProvider();
TNT->SetSpeed(
a_InitialVelocityCoeff * (GetTickRandomNumber(2) - 1), /** -1, 0, 1 */
a_InitialVelocityCoeff * Random.RandInt(-1, 1),
a_InitialVelocityCoeff * 2,
a_InitialVelocityCoeff * (GetTickRandomNumber(2) - 1)
a_InitialVelocityCoeff * Random.RandInt(-1, 1)
);
return TNT->GetUniqueID();
}
@@ -3793,6 +3792,15 @@ UInt32 cWorld::CreateProjectile(double a_PosX, double a_PosY, double a_PosZ, cPr
int cWorld::GetTickRandomNumber(int a_Range)
{
return GetRandomProvider().RandInt(a_Range);
}
void cWorld::TabCompleteUserName(const AString & a_Text, AStringVector & a_Results)
{
typedef std::pair<AString::size_type, AString> pair_t;