/* misc.c */
#include "misc.h"
+#include <stdio.h> /* for rename() */
+#include <unistd.h> /* for unlink(), acess() */
#include <stdlib.h> /* for calloc(), free() */
#include <string.h> /* for strlen(), strcmp(), memcpy() */
#include <stdint.h> /* for uint8_t */
extern void save_game(struct World * world)
{
- FILE * file = fopen("savefile", "w");
+ char * savefile_tmp = "savefile_tmp";
+ char * savefile = "savefile";
+ FILE * file = fopen(savefile_tmp, "w");
exit_err(0 == file, world,
- "Error saving game: Unable to open savefile for writing.");
+ "Error saving game: Unable to open new savefile for writing.");
if ( write_uint32_bigendian(world->seed, file)
|| write_uint32_bigendian(world->turn, file)
|| write_uint16_bigendian(world->player->pos.y + 1, file)
|| write_map_objects(world, world->item, file))
{
exit_err(1, world,
- "Error saving game: Trouble writing to opened savefile.");
+ "Error saving game: Trouble writing to opened new savefile.");
}
exit_err(fclose(file), world,
- "Error saving game: Unable to close opened savefile.");
+ "Error saving game: Unable to close opened new savefile.");
+ if (!access(savefile, F_OK))
+ {
+ exit_err(unlink(savefile), world,
+ "Error saving game: Unable to unlink old savefile.");
+ }
+ exit_err(rename(savefile_tmp, savefile), world,
+ "Error saving game: Unable to rename 'savefile_tmp' to "
+ "'savefile'.");
}