shadows, textures, resource managers... shaders...

[antikythera] / src / dataset.h

diff --git a/src/dataset.h b/src/dataset.h
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+/** DataSet is a generic resource database with fast O(logn) lookups by name
+ * it can be used for texture managers, mesh managers, sound effect managers etc
+ *
+ * The constructor takes a load function and a destructor function to be called
+ * when a nonexistent resource is requested and needs to be loaded, and when
+ * the DataSet is destroyed. The destructor is optional and can be set to null
+ * if not needed.
+ *
+ * Requesting a resource works by simply calling get, example:
+ * ----------------------------------------------------------
+ * \code
+ * Texture *load_texture(const char *fname);
+ * void free_texture(Texture *tex);
+ *
+ * DataSet<Texture*> texman(load_texture, free_texture);
+ * Texture *foo = texman.get("foo.png");
+ * \endcode
+ */
+#ifndef DATASET_H_
+#define DATASET_H_
+
+#include <string>
+#include <map>
+#include <resman.h>
+
+template <typename T>
+class DataSet {
+protected:
+       mutable std::map<std::string, T> data;
+       mutable struct resman *rman;
+
+       T (*create)();
+       bool (*load)(T, const char*);
+       bool (*done)(T);
+       void (*destroy)(T);
+
+       static int dataset_load_func(const char *fname, int id, void *cls);
+       static int dataset_done_func(int id, void *cls);
+       static void dataset_destroy_func(int id, void *cls);
+
+public:
+       DataSet(T (*create_func)(), bool (*load_func)(T, const char*), bool (*done_func)(T) = 0, void (*destr_func)(T) = 0);
+       ~DataSet();
+
+       void clear();
+       void update();
+
+       T get(const char *name) const;
+};
+
+#include "dataset.inl"
+
+#endif // DATASET_H_