From e7e6a79f8bf2855b5d1d432613151e48d2d685da Mon Sep 17 00:00:00 2001
From: Jon Bergli Heier <snakebite@jvnv.net>
Date: Sat, 14 May 2011 23:22:05 +0200
Subject: Implemented terrain chunk caching.

---
 terrain_cache.h | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 terrain_cache.h

(limited to 'terrain_cache.h')

diff --git a/terrain_cache.h b/terrain_cache.h
new file mode 100644
index 0000000..2ea4e15
--- /dev/null
+++ b/terrain_cache.h
@@ -0,0 +1,45 @@
+#ifndef TERRAIN_CACHE_H
+#define TERRAIN_CACHE_H
+
+#include "terrain_loader.h"
+
+#include <boost/shared_ptr.hpp>
+
+#include <map>
+#include <cstddef>
+
+class TerrainCache;
+
+struct TerrainCacheObject {
+	typedef boost::shared_ptr<TerrainCacheObject> p;
+
+	TerrainCache *cache;
+	float *heights;
+	int x, y, width, height;
+
+	TerrainCacheObject(TerrainCache *cache, int x, int y, int width, int height);
+	virtual ~TerrainCacheObject();
+};
+
+class TerrainCache {
+	friend class TerrainCacheObject;
+
+	private:
+		typedef std::pair<int, int> intpair;
+		typedef std::map<intpair, TerrainCacheObject::p> cache_map;
+
+		cache_map caches;
+		TerrainLoader *tl;
+		size_t max_size;
+
+		TerrainCacheObject::p make_object(int x, int y, int width, int height);
+
+	public:
+		TerrainCache(int seed, fs::path root, size_t max_size);
+		virtual ~TerrainCache();
+
+		TerrainCacheObject::p get_chunk(int x, int y, int width, int height);
+		size_t get_size();
+};
+
+#endif
-- 
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