X-Git-Url: https://plomlompom.com/repos/test.html?a=blobdiff_plain;f=src%2Fmain.c;h=eddf4bfa7921dadabc13efdf0800a73ff236a23a;hb=ad47c34bbc34f5511ba123d346899c2d47f90e0b;hp=d2fb9bf2140c1b84b9b1495391bacf322c3d8f76;hpb=b9082c113c43afe5c6a11c2b72f845ee2f8c6aea;p=plomrogue
diff --git a/src/main.c b/src/main.c
index d2fb9bf..eddf4bf 100644
--- a/src/main.c
+++ b/src/main.c
@@ -2,10 +2,11 @@
#include "main.h"
#include /* for atoi(), exit(), EXIT_FAILURE, calloc() */
-#include /* for FILE typedef, F_OK */
+#include /* for FILE typedef, F_OK, rename() */
#include /* for initscr(), noecho(), curs_set(), keypad(), raw() */
#include /* for time() */
-#include /* for getopt(), optarg */
+#include /* for unlink(), getopt(), optarg */
+#include /* for uint8_t */
#include "windows.h" /* for structs WinMeta, Win, init_win(), init_win_meta(),
* draw_all_wins()
*/
@@ -30,6 +31,16 @@
int main(int argc, char *argv[])
{
struct World world;
+ char * recordfile_tmp = "record_tmp";
+ char * savefile_tmp = "savefile_tmp";
+ char * err_x = "A file 'recordfile_tmp' exists, probably from a corrupted "
+ "previous record saving process. To avoid game record "
+ "corruption, I won't start until it is removed or renamed.";
+ exit_err(!access(recordfile_tmp, F_OK), &world, err_x);
+ err_x = "A file 'savefile_tmp' exists, probably from a corrupted "
+ "previous game saving process. To avoid savegame "
+ "corruption, I won't start until it is removed or renamed.";
+ exit_err(!access(savefile_tmp, F_OK), &world, err_x);
/* Read in startup options (i.e. replay option and replay start turn). */
int opt;
@@ -60,33 +71,49 @@ int main(int argc, char *argv[])
world.monster = 0;
world.item = 0;
init_map_object_defs(&world, "defs");
- uint8_t fail = 0;
/* For interactive mode, try to load world state from savefile. */
+ char * err_o = "Error loading game: "
+ "Unable to open 'savefile' for reading.";
+ char * err_r = "Error loading game: "
+ "Trouble reading from opened 'savefile'.";
+ char * err_c = "Error loading game: "
+ "Unable to close opened 'savefile'.";
+ char * savefile = "savefile";
FILE * file;
- if (1 == world.interactive && 0 == access("savefile", F_OK))
+ if (1 == world.interactive && 0 == access(savefile, F_OK))
{
- file = fopen("savefile", "r");
- fail = fail | read_uint32_bigendian(file, &world.seed);
- fail = fail | read_uint32_bigendian(file, &world.turn);
- fail = fail | read_uint16_bigendian(file, &player.pos.y);
- fail = fail | read_uint16_bigendian(file, &player.pos.x);
+ file = fopen(savefile, "r");
+ exit_err(0 == file, &world, err_o);
+ if ( read_uint32_bigendian(file, &world.seed)
+ || read_uint32_bigendian(file, &world.turn)
+ || read_uint16_bigendian(file, &player.pos.y)
+ || read_uint16_bigendian(file, &player.pos.x)
+ || read_uint8(file, &player.hitpoints)
+ || read_map_objects(&world, &world.monster, file)
+ || read_map_objects(&world, &world.item, file))
+ {
+ exit_err(1, &world, err_r);
+ }
+ exit_err(fclose(file), &world, err_c);
player.pos.y--;
player.pos.x--;
- fail = fail | read_uint8(file, &player.hitpoints);
- fail = fail | read_map_objects(&world, &world.monster, file);
- fail = fail | read_map_objects(&world, &world.item, file);
- fclose(file);
}
/* For non-interactive mode, try to load world state from record file. */
else
{
+ err_o = "Error loading record file: "
+ "Unable to open file 'record' for reading.";
+ err_r = "Error loading record file: "
+ "Trouble reading from opened file 'record'.";
+ char * recordfile = "record";
world.turn = 1;
if (0 == world.interactive)
{
- file = fopen("record", "r");
- fail = fail | read_uint32_bigendian(file, &world.seed);
+ file = fopen(recordfile, "r");
+ exit_err(0 == file, &world, err_o);
+ exit_err(read_uint32_bigendian(file, &world.seed), &world, err_r);
}
/* For interactive-mode in newly started world, generate a start seed
@@ -94,15 +121,27 @@ int main(int argc, char *argv[])
*/
else
{
- file = fopen("record", "w");
world.seed = time(NULL);
- fail = fail | write_uint32_bigendian(world.seed, file);
- fclose(file);
+
+ err_x = "Error recording new seed: "
+ "A file 'record' already exists, when it shouldn't.";
+ err_o = "Error recording new seed: "
+ "Unable to open 'record_tmp' file for writing.";
+ char * err_w = "Error recording new seed: "
+ "Trouble writing to opened file 'record_tmp'.";
+ err_c = "Error recording new seed: "
+ "Unable to close opened file 'record_tmp'.";
+ char * err_m = "Error recording new seed: "
+ "Unable to rename file 'record_tmp' to 'record'.";
+ exit_err(!access(recordfile, F_OK), &world, err_x);
+ file = fopen(recordfile_tmp, "w");
+ exit_err(0 == file, &world, err_o);
+ exit_err(write_uint32_bigendian(world.seed, file), &world, err_w);
+ exit_err(fclose(file), &world, err_c);
+ exit_err(rename(recordfile_tmp, recordfile), &world, err_m);
}
}
- exit_err(fail, &world, "Failure initializing game.");
-
/* Generate map from seed and, if newly generated world, start positions of
* actors.
@@ -151,8 +190,8 @@ int main(int argc, char *argv[])
/* Replay mode. */
int key;
- unsigned char quit_called = 0;
- unsigned char await_actions = 1;
+ uint8_t quit_called = 0;
+ uint8_t await_actions = 1;
if (0 == world.interactive)
{
int action;
@@ -205,6 +244,8 @@ int main(int argc, char *argv[])
&win_map, &win_info, &win_log);
if (1 == quit_called)
{
+ err_c = "Error closing read 'record' file.";
+ exit_err(fclose(file), &world, err_c);
exit_game(&world);
}
}