src/server/server_map.h

   1 #ifndef _SERVER_MAP_H_
   2 #define _SERVER_MAP_H_
   3
   4 #include <stddef.h>
   5 #include <pthread.h>
   6 #include "map.h"
   7 #include "server/server.h"
   8
   9 typedef enum
  10 {
  11         MBS_CREATED,    // block exists but was not yet generated
  12         MBS_GENERATING, // currently generating in a seperate thread
  13         MBS_READY,              // generation finished
  14 } MapBlockState;
  15
  16 typedef enum
  17 {
  18         MGS_VOID,               // initial air, can be overridden by anything
  19         MGS_TERRAIN,    // basic terrain, can be overridden by anything except the void
  20         MGS_BOULDERS,   // boulders, replace terrain
  21         MGS_TREES,              // trees replace boulders
  22         MGS_PLAYER,             // player-placed nodes or things placed after map generation
  23 } MapgenStage;
  24
  25 typedef MapgenStage MapgenStageBuffer[MAPBLOCK_SIZE][MAPBLOCK_SIZE][MAPBLOCK_SIZE];
  26
  27 typedef struct {
  28         MapgenStage mgs;
  29         List *changed_blocks;
  30 } MapgenSetNodeArg;
  31
  32 typedef struct
  33 {
  34         char *data;                                             // cached serialized data
  35         size_t size;                                    // size of data
  36         size_t rawsize;                                 // size of decompressed data
  37         MapBlockState state;                    // generation state of the block
  38         pthread_t mapgen_thread;                // thread that is generating block
  39         MapgenStageBuffer mgs_buffer;   // buffer to make sure mapgen only overrides things it should
  40 } MapBlockExtraData;
  41
  42 extern struct ServerMap {
  43         Map *map;                                                               // map object, data is stored here
  44         bool joining_threads;                                   // prevent threads from removing themselves from the thread list if thread list is being cleared anyway
  45         pthread_mutex_t joining_threads_mtx;    // mutex to protect joining threads
  46         List mapgen_threads;                                    // a list of mapgen threads (need to be joined before shutdown)
  47         pthread_mutex_t mapgen_threads_mtx;             // mutex to protect mapgen thread list
  48         s32 spawn_height;                                               // height to spawn players at
  49 } server_map; // ServerMap singleton
  50
  51 void server_map_init(Server *server);                                           // ServerMap singleton constructor
  52 void server_map_deinit();                                                                       // ServerMap singleton destructor
  53 void server_map_requested_block(Client *client, v3s32 pos);     // handle block request from client (thread safe)
  54 void server_map_prepare_spawn();                                                        // prepare spawn region
  55
  56 #endif