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(svn r15026) -Codechange: use SpriteTypeByte instead of SpriteType in the SpriteCache struct in order to make it smaller

This commit is contained in:
smatz 2009-01-12 16:53:11 +00:00
parent eb6dc2b8ae
commit 9294f96168
2 changed files with 33 additions and 5 deletions
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32
src/core/enum_type.hpp
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@ -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 */

6
src/spritecache.cpp
View File

@ -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
};