1 /* $Id$ */

     2 

     3 /** @file autoreplace_base.h Base class for autoreplaces/autorenews. */

     4 

     5 #ifndef AUTOREPLACE_BASE_H

     6 #define AUTOREPLACE_BASE_H

     7 

     8 #include "oldpool.h"

     9 #include "autoreplace_type.h"

    10 

    11 /**

    12  * Memory pool for engine renew elements. DO NOT USE outside of engine.c. Is

    13  * placed here so the only exception to this rule, the saveload code, can use

    14  * it.

    15  */

    16 DECLARE_OLD_POOL(EngineRenew, EngineRenew, 3, 8000)

    17 

    18 /**

    19  * Struct to store engine replacements. DO NOT USE outside of engine.c. Is

    20  * placed here so the only exception to this rule, the saveload code, can use

    21  * it.

    22  */

    23 struct EngineRenew : PoolItem<EngineRenew, EngineRenewID, &_EngineRenew_pool> {

    24 	EngineID from;

    25 	EngineID to;

    26 	EngineRenew *next;

    27 	GroupID group_id;

    28 

    29 	EngineRenew(EngineID from = INVALID_ENGINE, EngineID to = INVALID_ENGINE) : from(from), to(to), next(NULL) {}

    30 	~EngineRenew() { this->from = INVALID_ENGINE; }

    31 

    32 	inline bool IsValid() const { return this->from != INVALID_ENGINE; }

    33 };

    34 

    35 #define FOR_ALL_ENGINE_RENEWS_FROM(er, start) for (er = GetEngineRenew(start); er != NULL; er = (er->index + 1U < GetEngineRenewPoolSize()) ? GetEngineRenew(er->index + 1U) : NULL) if (er->IsValid())

    36 #define FOR_ALL_ENGINE_RENEWS(er) FOR_ALL_ENGINE_RENEWS_FROM(er, 0)

    37 

    38 #endif /* AUTOREPLACE_BASE_H */