Add map saving

.gitignore

@@ -1,3 +1,4 @@
 *.o
 DragonblocksServer
 Dragonblocks
+map

src/map.c

@@ -138,6 +138,25 @@ MapBlock *map_deserialize_block(int fd)
 	return block;
 }
 
+bool map_serialize(int fd, Map *map)
+{
+	for (size_t s = 0; s < map->sectors.siz; s++) {
+		MapSector *sector = map->sectors.ptr[s];
+		for (size_t b = 0; b < sector->blocks.siz; b++)
+			if (! map_serialize_block(fd, sector->blocks.ptr[b]))
+				return false;
+	}
+	return true;
+}
+
+void map_deserialize(int fd, Map *map)
+{
+	MapBlock *block;
+
+	while ((block = map_deserialize_block(fd)) != NULL)
+		map_add_block(map, block);
+}
+
 v3s32 map_node_to_block_pos(v3s32 pos, v3u8 *offset)
 {
 	if (offset)

src/map.h

@@ -43,6 +43,8 @@ void map_add_block(Map *map, MapBlock *block);
 bool map_deserialize_node(int fd, MapNode *buf);
 bool map_serialize_block(int fd, MapBlock *block);
 MapBlock *map_deserialize_block(int fd);
+bool map_serialize(int fd, Map *map);
+void map_deserialize(int fd, Map *map);
 
 v3s32 map_node_to_block_pos(v3s32 pos, v3u8 *offset);
 

src/server.c

@@ -3,6 +3,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <netdb.h>
+#include <fcntl.h>
 #include "server.h"
 #include "signal.h"
 #include "util.h"
@@ -37,6 +38,17 @@ void server_shutdown(Server *srv)
 	shutdown(srv->sockfd, SHUT_RDWR);
 	close(srv->sockfd);
 
+	FILE *mapfile = fopen("map", "w");
+	if (mapfile) {
+		if (map_serialize(fileno(mapfile), srv->map))
+			printf("Saved map\n");
+		else
+			perror("map_serialize");
+		fclose(mapfile);
+	} else {
+		perror("fopen");
+	}
+
 	map_delete(srv->map);
 
 	exit(EXIT_SUCCESS);
@@ -144,5 +156,13 @@ int main(int argc, char **argv)
 
 	server.map = map_create(NULL);
 
+	FILE *mapfile = fopen("map", "r");
+	if (mapfile) {
+		map_deserialize(fileno(mapfile), server.map);
+		fclose(mapfile);
+	} else if (errno != ENOENT) {
+		perror("fopen");
+	}
+
 	for ever accept_client(&server);
 }