From 9b91d6f3d0187e0daf29a262cf19ad08ba2b7cf5 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Fri, 26 Sep 2014 03:08:15 +0200
Subject: Add support for rotated sprites

---
 src/view/SpriteCache.hpp | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

(limited to 'src/view/SpriteCache.hpp')

diff --git a/src/view/SpriteCache.hpp b/src/view/SpriteCache.hpp
index c08ba6f..ae01887 100644
--- a/src/view/SpriteCache.hpp
+++ b/src/view/SpriteCache.hpp
@@ -27,6 +27,7 @@
 #pragma once
 
 #include <memory>
+#include <string>
 #include <unordered_map>
 
 #include <SDL.h>
@@ -38,19 +39,32 @@ namespace View {
 
 class SpriteCache {
 private:
-	class SDL_Surface_deleter {
-	public:
-		void operator()(SDL_Surface *surface) {
+	struct SDL_Surface_deleter {
+		void operator()(SDL_Surface *surface) const {
 			SDL_FreeSurface(surface);
 		}
 	};
 
-	std::unordered_map<std::string, std::unique_ptr<SDL_Surface, SDL_Surface_deleter>> sprites;
+	typedef std::pair<std::string, int> sprite_key;
+	typedef std::unique_ptr<SDL_Surface, SDL_Surface_deleter> sprite_value;
 
-	std::unique_ptr<SDL_Surface, SDL_Surface_deleter> load(const std::string &name);
+	struct sprite_key_hash {
+		size_t operator()(const sprite_key &k) const {
+			std::hash<std::string> string_hash;
+			std::hash<int> int_hash;
+
+			return string_hash(k.first) ^ int_hash(k.second);
+		}
+	};
+
+	std::unordered_map<sprite_key, sprite_value, sprite_key_hash> sprites;
+
+	sprite_value load(const std::string &id);
+	sprite_value load(const std::string &id, unsigned rotation);
+	sprite_value & get(const std::string &id, unsigned rotation);
 
 public:
-	SDL_Surface * get(const std::string &type, const std::string &name);
+	SDL_Surface * get(const std::string &type, const std::string &name, unsigned rotation = 0);
 
 	void clear() {
 		sprites.clear();
-- 
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