Add spawn coordinates

2 files changed, 107 insertions, 0 deletions

diff --git a/src/World/Level.cpp b/src/World/Level.cpp
new file mode 100644
index 0000000..8cd396e
--- /dev/null
+++ b/src/World/Level.cpp
@@ -0,0 +1,58 @@
+/*
+  Copyright (c) 2015, Matthias Schiffer <mschiffer@universe-factory.net>
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright notice,
+       this list of conditions and the following disclaimer in the documentation
+       and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#include "Level.hpp"
+#include "../GZip.hpp"
+#include "../Util.hpp"
+#include "../NBT/IntTag.hpp"
+
+#include <iostream>
+
+
+namespace MinedMap {
+namespace World {
+
+Level::Level(const char *filename) {
+	std::vector<uint8_t> buffer = readGZip(filename);
+
+	Buffer nbt(buffer.data(), buffer.size());
+	std::pair<std::string, std::shared_ptr<const NBT::Tag>> tag = NBT::Tag::readNamedTag(&nbt);
+	if (tag.first != "")
+		throw std::invalid_argument("invalid root tag");
+
+	root = assertValue(std::dynamic_pointer_cast<const NBT::CompoundTag>(tag.second));
+	data = assertValue(root->get<NBT::CompoundTag>("Data"));
+}
+
+std::pair<int32_t, int32_t> Level::getSpawn() const {
+	int32_t x = assertValue(data->get<NBT::IntTag>("SpawnX"))->getValue();
+	int32_t z = assertValue(data->get<NBT::IntTag>("SpawnZ"))->getValue();
+
+	return std::make_pair(x, z);
+}
+
+}
+}
diff --git a/src/World/Level.hpp b/src/World/Level.hpp
new file mode 100644
index 0000000..6cdfc4e
--- /dev/null
+++ b/src/World/Level.hpp
@@ -0,0 +1,49 @@
+/*
+  Copyright (c) 2015, Matthias Schiffer <mschiffer@universe-factory.net>
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright notice,
+       this list of conditions and the following disclaimer in the documentation
+       and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#pragma once
+
+#include "../NBT/CompoundTag.hpp"
+
+#include <cstdint>
+
+
+namespace MinedMap {
+namespace World {
+
+class Level {
+private:
+	std::shared_ptr<const NBT::CompoundTag> root;
+	std::shared_ptr<const NBT::CompoundTag> data;
+
+public:
+	Level(const char *filename);
+
+	std::pair<int32_t, int32_t> getSpawn() const;
+};
+
+}
+}