diff options
Diffstat (limited to 'player.h')
| -rw-r--r-- | player.h | 42 |
1 files changed, 41 insertions, 1 deletions
@@ -2,6 +2,8 @@ #define PLAYER_H #include "aystar.h" +#include "engine.h" +#include "rail.h" typedef struct PlayerEconomyEntry { int32 income; @@ -157,7 +159,7 @@ typedef struct Player { byte player_color; byte player_money_fraction; - byte max_railtype; + byte avail_railtypes; byte block_preview; PlayerID index; @@ -203,6 +205,44 @@ static inline Player* GetPlayer(uint i) return &_players[i]; } +/** Returns the number of rail types the player can build + * @param *p Player in question + */ +static inline int GetNumRailtypes(Player *p) +{ + int num = 0; + int i; + + for (i = 0; i < (int)sizeof(p->avail_railtypes) * 8; i++) + if (HASBIT(p->avail_railtypes, i)) num++; + + assert(num <= RAILTYPE_END); + return num; +} + +byte GetPlayerRailtypes(int p); + +/** Finds out if a Player has a certain railtype available + */ +static inline bool HasRailtypeAvail(Player *p, RailType Railtype) +{ + return HASBIT(p->avail_railtypes, Railtype); +} + +/** Returns the "best" railtype a player can build. + * As the AI doesn't know what the BEST one is, we + * have our own priority list here. When adding + * new railtypes, modify this function + * @param p the player "in action" + * @return The "best" railtype a player has available + */ +static inline byte GetBestRailtype(Player *p) +{ + if (HasRailtypeAvail(p, RAILTYPE_MAGLEV)) return RAILTYPE_MAGLEV; + if (HasRailtypeAvail(p, RAILTYPE_MONO)) return RAILTYPE_MONO; + return RAILTYPE_RAIL; +} + #define IS_HUMAN_PLAYER(p) (!GetPlayer((byte)(p))->is_ai) #define IS_INTERACTIVE_PLAYER(p) (((byte)p) == _local_player) |