From 9b1d92387dd83e7340c7ee5f06dbad0a971981b0 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Sun, 1 Feb 2015 15:19:18 +0100
Subject: Use biome data

---
 src/MinedMap.cpp    | 2 +-
 src/World/Block.cpp | 2 +-
 src/World/Block.hpp | 6 ++++--
 src/World/Chunk.cpp | 9 +++++++++
 src/World/Chunk.hpp | 5 +++++
 5 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/src/MinedMap.cpp b/src/MinedMap.cpp
index c33dabb..594268c 100644
--- a/src/MinedMap.cpp
+++ b/src/MinedMap.cpp
@@ -97,7 +97,7 @@ int main(int argc, char *argv[]) {
 
 			for (size_t x = 0; x < World::Chunk::SIZE; x++) {
 				for (size_t z = 0; z < World::Chunk::SIZE; z++)
-					image[Z*World::Chunk::SIZE+z][X*World::Chunk::SIZE+x] = htonl(layer.blocks[x][z].getColor(0));
+					image[Z*World::Chunk::SIZE+z][X*World::Chunk::SIZE+x] = htonl(layer.blocks[x][z].getColor());
 			}
 		}
 	}
diff --git a/src/World/Block.cpp b/src/World/Block.cpp
index f02c107..ae6c9cd 100644
--- a/src/World/Block.cpp
+++ b/src/World/Block.cpp
@@ -32,7 +32,7 @@
 namespace MinedMap {
 namespace World {
 
-uint32_t Block::getColor(uint8_t biome) const {
+uint32_t Block::getColor() const {
 	const World::BlockType &t = World::BLOCK_TYPES[id];
 
 	if (!t.opaque)
diff --git a/src/World/Block.hpp b/src/World/Block.hpp
index 2bdbaa5..3613cac 100644
--- a/src/World/Block.hpp
+++ b/src/World/Block.hpp
@@ -41,9 +41,11 @@ struct Block {
 	uint8_t blockLight;
 	uint8_t skyLight;
 
-	Block() : id(0), data(0), height(0), blockLight(0), skyLight(0) {}
+	uint8_t biome;
 
-	uint32_t getColor(uint8_t biome) const;
+	Block() : id(0), data(0), height(0), blockLight(0), skyLight(0), biome(0) {}
+
+	uint32_t getColor() const;
 };
 
 }
diff --git a/src/World/Chunk.cpp b/src/World/Chunk.cpp
index 5a6f95b..3a1e9a2 100644
--- a/src/World/Chunk.cpp
+++ b/src/World/Chunk.cpp
@@ -105,6 +105,13 @@ void Chunk::analyzeChunk() {
 	sections = assertValue(level->get<NBT::ListTag<NBT::CompoundTag>>("Sections"));
 	maxY = (assertValue(sections->back()->get<NBT::ByteTag>("Y"))->getValue() + 1) * SIZE;
 
+
+	std::shared_ptr<const NBT::ByteArrayTag> biomeTag = assertValue(level->get<NBT::ByteArrayTag>("Biomes"));
+	if (biomeTag->getLength() != SIZE*SIZE)
+		throw std::invalid_argument("corrupt biome data");
+
+	biomes = biomeTag->getValue();
+
 	blockIDs.reset(new uint8_t[maxY * SIZE * SIZE]);
 	blockData.reset(new uint8_t[maxY * SIZE * SIZE / 2]);
 	blockSkyLight.reset(new uint8_t[maxY * SIZE * SIZE / 2]);
@@ -170,6 +177,8 @@ Chunk::Blocks Chunk::getTopLayer() const {
 
 				b.height = h;
 
+				b.biome = getBiomeAt(x, z);
+
 				done++;
 			}
 		}
diff --git a/src/World/Chunk.hpp b/src/World/Chunk.hpp
index a4948b7..d05328c 100644
--- a/src/World/Chunk.hpp
+++ b/src/World/Chunk.hpp
@@ -67,6 +67,7 @@ private:
 	std::unique_ptr<uint8_t[]> blockData;
 	std::unique_ptr<uint8_t[]> blockSkyLight;
 	std::unique_ptr<uint8_t[]> blockBlockLight;
+	const uint8_t *biomes;
 
 
 	size_t getIndex(size_t x, size_t y, size_t z) const {
@@ -101,6 +102,10 @@ private:
 		return getHalf(blockSkyLight.get(), x, y, z);
 	}
 
+	uint8_t getBiomeAt(size_t x, size_t z) const {
+		return biomes[z*SIZE + x];
+	}
+
 
 	void inflateChunk(Buffer buffer);
 	void parseChunk();
-- 
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