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(svn r3396) - Autoreplace changes:

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- Change fixed array per player to a single pool. This avoids future problems
    with vehicle numbers and decreases savegame size. Engine replacements from
    previous savegames will be lost.
  - Move engine replacement code from players.c to engine.c.
                                      (thanks to blathijs for rewriting this)
This commit is contained in:
peter1138
2006-01-12 15:52:18 +00:00
parent 28ca056d56
commit 90aff7a026
12 changed files with 360 additions and 116 deletions
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81
engine.h
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@@ -7,6 +7,7 @@
*/
#include "sprite.h"
#include "pool.h"
typedef struct RailVehicleInfo {
byte image_index;
@@ -102,6 +103,10 @@ enum {
NUM_VEHICLE_TYPES = 6
};
enum {
INVALID_ENGINE = 0xFFFF,
};
void AddTypeToEngines(void);
void StartupEngines(void);
@@ -283,4 +288,80 @@ void UnloadWagonOverrides(void);
void UnloadCustomEngineSprites(void);
void UnloadCustomEngineNames(void);
/************************************************************************
* Engine Replacement stuff
************************************************************************/
/**
* Struct to store engine replacements. DO NOT USE outside of engine.c. Is
* placed here so the only exception to this rule, the saveload code, can use
* it.
*/
struct EngineRenew {
uint16 index;
EngineID from;
EngineID to;
struct EngineRenew *next;
};
typedef struct EngineRenew EngineRenew;
/**
* Memory pool for engine renew elements. DO NOT USE outside of engine.c. Is
* placed here so the only exception to this rule, the saveload code, can use
* it.
*/
extern MemoryPool _engine_renew_pool;
/**
* DO NOT USE outside of engine.c. Is
* placed here so the only exception to this rule, the saveload code, can use
* it.
*/
static inline EngineRenew *GetEngineRenew(uint16 index)
{
return (EngineRenew*)GetItemFromPool(&_engine_renew_pool, index);
}
/**
* A list to group EngineRenew directives together (such as per-player).
*/
typedef EngineRenew* EngineRenewList;
/**
* Remove all engine replacement settings for the player.
* @param er The renewlist for a given player.
* @return The new renewlist for the player.
*/
void RemoveAllEngineReplacement(EngineRenewList* erl);
/**
* Retrieve the engine replacement in a given renewlist for an original engine type.
* @param erl The renewlist to search in.
* @param engine Engine type to be replaced.
* @return The engine type to replace with, or INVALID_ENGINE if no
* replacement is in the list.
*/
EngineID EngineReplacement(EngineRenewList erl, EngineID engine);
/**
* Add an engine replacement to the given renewlist.
* @param erl The renewlist to add to.
* @param old_engine The original engine type.
* @param new_engine The replacement engine type.
* @param flags The calling command flags.
* @return 0 on success, CMD_ERROR on failure.
*/
int32 AddEngineReplacement(EngineRenewList* erl, EngineID old_engine, EngineID new_engine, uint32 flags);
/**
* Remove an engine replacement from a given renewlist.
* @param erl The renewlist from which to remove the replacement
* @param engine The original engine type.
* @param flags The calling command flags.
* @return 0 on success, CMD_ERROR on failure.
*/
int32 RemoveEngineReplacement(EngineRenewList* erl, EngineID engine, uint32 flags);
#endif /* ENGINE_H */