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authorsmatz <smatz@openttd.org>2009-01-12 17:31:43 +0000
committersmatz <smatz@openttd.org>2009-01-12 17:31:43 +0000
commitf528593a40e2cf215183d4c7ab904ead993b8c49 (patch)
tree354529d3c4edeb0bdb9e0c0547e2a858c1fdb69d
parenta5433f2e2b63119fdd6f7b531282821ea1c90e80 (diff)
downloadopenttd-f528593a40e2cf215183d4c7ab904ead993b8c49.tar.xz
(svn r15031) -Fix (r15027): merge reverted r15026, so do it once again
-rw-r--r--src/core/enum_type.hpp32
-rw-r--r--src/spritecache.cpp6
2 files changed, 33 insertions, 5 deletions
diff --git a/src/core/enum_type.hpp b/src/core/enum_type.hpp
index bd059212c..6e1da3dda 100644
--- a/src/core/enum_type.hpp
+++ b/src/core/enum_type.hpp
@@ -74,8 +74,7 @@ template <typename Tenum_t> struct TinyEnumT;
/** The general declaration of TinyEnumT<> (above) */
template <typename Tenum_t>
-struct TinyEnumT
-{
+struct TinyEnumT {
typedef Tenum_t enum_type; ///< expose our enumeration type (i.e. Trackdir) to outside
typedef EnumPropsT<Tenum_t> Props; ///< make easier access to our enumeration propeties
typedef typename Props::storage storage_type; ///< small storage type
@@ -121,4 +120,31 @@ struct TinyEnumT
}
};
-#endif /* HELPERS_HPP */
+
+/** Template of struct holding enum types (on most archs, enums are stored in an int32). No math operators are provided. */
+template <typename enum_type, typename storage_type>
+struct SimpleTinyEnumT {
+ storage_type m_val; ///< here we hold the actual value in small (i.e. byte) form
+
+ /** Cast operator - invoked then the value is assigned to the storage_type */
+ FORCEINLINE operator enum_type () const
+ {
+ return (enum_type)this->m_val;
+ }
+
+ /** Assignment operator (from enum_type) */
+ FORCEINLINE SimpleTinyEnumT &operator = (enum_type e)
+ {
+ this->m_val = (storage_type)e;
+ return *this;
+ }
+
+ /** Assignment operator (from general uint) */
+ FORCEINLINE SimpleTinyEnumT &operator = (uint u)
+ {
+ this->m_val = (storage_type)u;
+ return *this;
+ }
+};
+
+#endif /* ENUM_TYPE_HPP */
diff --git a/src/spritecache.cpp b/src/spritecache.cpp
index 3e270ea3b..e26029a1b 100644
--- a/src/spritecache.cpp
+++ b/src/spritecache.cpp
@@ -17,12 +17,14 @@
#endif /* WITH_PNG */
#include "blitter/factory.hpp"
#include "core/math_func.hpp"
+#include "core/enum_type.hpp"
#include "table/sprites.h"
/* Default of 4MB spritecache */
uint _sprite_cache_size = 4;
+typedef SimpleTinyEnumT<SpriteType, byte> SpriteTypeByte;
struct SpriteCache {
void *ptr;
@@ -30,8 +32,8 @@ struct SpriteCache {
uint32 id;
uint16 file_slot;
int16 lru;
- SpriteType type; ///< In some cases a single sprite is misused by two NewGRFs. Once as real sprite and once as recolour sprite. If the recolour sprite gets into the cache it might be drawn as real sprite which causes enormous trouble.
- bool warned; ///< True iff the user has been warned about incorrect use of this sprite
+ SpriteTypeByte type; ///< In some cases a single sprite is misused by two NewGRFs. Once as real sprite and once as recolour sprite. If the recolour sprite gets into the cache it might be drawn as real sprite which causes enormous trouble.
+ bool warned; ///< True iff the user has been warned about incorrect use of this sprite
};