Initial commit

1 files changed, 165 insertions, 0 deletions

diff --git a/Minecraft.World/BiomeCache.cpp b/Minecraft.World/BiomeCache.cpp
new file mode 100644
index 00000000..0d9c017c
--- /dev/null
+++ b/Minecraft.World/BiomeCache.cpp
@@ -0,0 +1,165 @@
+#include "stdafx.h"
+
+#include "Biome.h"
+#include "BiomeSource.h"
+#include "BiomeCache.h"
+#include "System.h"
+
+BiomeCache::Block::Block(int x, int z, BiomeCache *parent)
+{
+// 	temps = floatArray(ZONE_SIZE * ZONE_SIZE, false);		// MGH - added "no clear" flag to arrayWithLength
+// 	downfall = floatArray(ZONE_SIZE * ZONE_SIZE, false);
+// 	biomes = BiomeArray(ZONE_SIZE * ZONE_SIZE, false);
+	biomeIndices = byteArray(ZONE_SIZE * ZONE_SIZE, false);
+
+	lastUse = 0;
+	this->x = x;
+	this->z = z;
+// 	parent->source->getTemperatureBlock(temps, x << ZONE_SIZE_BITS, z << ZONE_SIZE_BITS, ZONE_SIZE, ZONE_SIZE);
+// 	parent->source->getDownfallBlock(downfall, x << ZONE_SIZE_BITS, z << ZONE_SIZE_BITS, ZONE_SIZE, ZONE_SIZE);
+// 	parent->source->getBiomeBlock(biomes, x << ZONE_SIZE_BITS, z << ZONE_SIZE_BITS, ZONE_SIZE, ZONE_SIZE, false);
+	parent->source->getBiomeIndexBlock(biomeIndices, x << ZONE_SIZE_BITS, z << ZONE_SIZE_BITS, ZONE_SIZE, ZONE_SIZE, false);
+
+}
+
+BiomeCache::Block::~Block()
+{
+// 	delete [] temps.data;
+// 	delete [] downfall.data;
+// 	delete [] biomes.data;
+	delete [] biomeIndices.data;
+}
+
+Biome *BiomeCache::Block::getBiome(int x, int z)
+{
+//	return biomes[(x & ZONE_SIZE_MASK) | ((z & ZONE_SIZE_MASK) << ZONE_SIZE_BITS)];
+
+	int biomeIndex = biomeIndices[(x & ZONE_SIZE_MASK) | ((z & ZONE_SIZE_MASK) << ZONE_SIZE_BITS)];
+	return Biome::biomes[biomeIndex];
+}
+
+float BiomeCache::Block::getTemperature(int x, int z)
+{
+//	return temps[(x & ZONE_SIZE_MASK) | ((z & ZONE_SIZE_MASK) << ZONE_SIZE_BITS)];
+
+	int biomeIndex = biomeIndices[(x & ZONE_SIZE_MASK) | ((z & ZONE_SIZE_MASK) << ZONE_SIZE_BITS)];
+	return Biome::biomes[biomeIndex]->getTemperature();
+
+}
+
+float BiomeCache::Block::getDownfall(int x, int z)
+{
+// 	return downfall[(x & ZONE_SIZE_MASK) | ((z & ZONE_SIZE_MASK) << ZONE_SIZE_BITS)];
+
+	int biomeIndex = biomeIndices[(x & ZONE_SIZE_MASK) | ((z & ZONE_SIZE_MASK) << ZONE_SIZE_BITS)];
+	return Biome::biomes[biomeIndex]->getDownfall();
+
+}
+
+BiomeCache::BiomeCache(BiomeSource *source)
+{
+	// 4J Initialisors
+	lastUpdateTime = 0;
+
+	this->source = source;
+
+	InitializeCriticalSection(&m_CS);
+
+}
+
+BiomeCache::~BiomeCache()
+{
+	// 4J Stu - Delete source?
+	// delete source;
+
+	for(AUTO_VAR(it, all.begin()); it != all.end(); ++it)
+	{
+		delete (*it);
+	}
+	DeleteCriticalSection(&m_CS);
+}
+
+
+BiomeCache::Block *BiomeCache::getBlockAt(int x, int z)
+{
+	EnterCriticalSection(&m_CS);
+	x >>= ZONE_SIZE_BITS;
+	z >>= ZONE_SIZE_BITS;
+	__int64 slot = (((__int64) x) & 0xffffffffl) | ((((__int64) z) & 0xffffffffl) << 32l);
+	AUTO_VAR(it, cached.find(slot));
+	Block *block = NULL;
+	if (it == cached.end())
+	{
+		MemSect(48);
+		block = new Block(x, z, this);
+		cached[slot] = block;
+		all.push_back(block);
+		MemSect(0);
+	}
+	else
+	{
+		block = it->second;
+	}
+	block->lastUse = app.getAppTime();
+	LeaveCriticalSection(&m_CS);
+	return block;
+}
+
+
+Biome *BiomeCache::getBiome(int x, int z)
+{
+	return getBlockAt(x, z)->getBiome(x, z);
+}
+
+float BiomeCache::getTemperature(int x, int z)
+{
+	return getBlockAt(x, z)->getTemperature(x, z);
+}
+
+float BiomeCache::getDownfall(int x, int z)
+{
+	return getBlockAt(x, z)->getDownfall(x, z);
+}
+
+void BiomeCache::update()
+{
+	EnterCriticalSection(&m_CS);
+	__int64 now = app.getAppTime();
+	__int64 utime = now - lastUpdateTime;
+	if (utime > DECAY_TIME / 4 || utime < 0)
+	{
+		lastUpdateTime = now;
+
+		for (AUTO_VAR(it, all.begin()); it != all.end();)
+		{
+			Block *block = *it;
+			__int64 time = now - block->lastUse;
+			if (time > DECAY_TIME || time < 0)
+			{
+				it = all.erase(it);
+				__int64 slot = (((__int64) block->x) & 0xffffffffl) | ((((__int64) block->z) & 0xffffffffl) << 32l);
+				cached.erase(slot);
+				delete block;
+			}
+			else
+			{
+				++it;
+			}
+		}
+	}
+	LeaveCriticalSection(&m_CS);
+}
+
+BiomeArray BiomeCache::getBiomeBlockAt(int x, int z)
+{
+	byteArray indices = getBlockAt(x, z)->biomeIndices;
+	BiomeArray biomes(indices.length);
+	for(int i=0;i<indices.length;i++)
+		biomes[i] = Biome::biomes[indices[i]];
+	return biomes;
+}
+
+byteArray BiomeCache::getBiomeIndexBlockAt(int x, int z)
+{
+	return getBlockAt(x, z)->biomeIndices;
+}
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