calculate income when loading state file

[c128-kasse] / src / config.c

diff --git a/src/config.c b/src/config.c
index 34a09a21b863ea7591fbfab9763e626625127cc1..05e06c877261a08c142539babf031410128d38e7 100644 (file)
--- a/src/config.c
+++ b/src/config.c
@@ -1,6 +1,6 @@
 /* 
  * RGB2R-C128-Kassenprogramm
- * (c) 2007-2008 phil_fry, sECuRE, sur5r
+ * © 2007-2009 phil_fry, sECuRE, sur5r
  * See LICENSE for license information
  *
  */
@@ -15,6 +15,7 @@
 #include "kasse.h"
 #include "general.h"
 #include "config.h"
+#include "print.h"
 
 /* NOTE: undocumented function which scratches files
    We need to use this function because linking unistd.h
@@ -36,15 +37,18 @@ struct credits_array_t credits;
  * files directly)
  *
  */
-static void lookup_needed_files() {
-       BYTE lfn = 8;
+static void lookup_needed_files(void) {
+       BYTE lfn = 8, c;
        struct cbm_dirent dirent;
+       char filename[8];
 
        if (cbm_opendir(lfn, (BYTE)8) != 0) {
                cprintf("could not open directory\r\n");
                return;
        }
        while (cbm_readdir(lfn, &dirent) == 0) {
+               /* NOTE: You MUST NOT delete any logfiles. This does only work
+                * under the assumption that logfiles are named continuously */
                if (strncmp(dirent.name, "log", 3) == 0)
                        log_num++;
                if (strcasecmp(dirent.name, "items") == 0)
@@ -53,41 +57,64 @@ static void lookup_needed_files() {
                        credits_exists = true;
        }
        cbm_closedir(lfn);
+
+       /* Try to find out how many lines the last logfile got to seamlessly
+        * append to it, if we got more than one logfile. */
+       if (log_num > 0) {
+               log_num--;
+
+               sprintf(filename, "log-%u", log_num);
+               if ((c = cbm_open(lfn, (BYTE)8, (BYTE)CBM_READ, filename)) != 0) {
+                       c128_perror(c, "cbm_open(log) for reading");
+                       exit(1);
+               }
+               log_heap_offset = cbm_read(lfn, log_heap_buf, LOG_SIZE);
+               if (log_heap_offset < 0) {
+                       cprintf("error while cbm_read()ing the logfile\r\n");
+                       exit(1);
+               }
+               log_heap_flushed = log_heap_offset;
+               log_heap_buf[log_heap_offset] = '\0';
+               cbm_close(lfn);
+       }
 }
 
-void load_items() {
+void load_items(void) {
        BYTE c;
 
        if (items_exists) {
                items_sold = 0;
+               money = 0;
                cbm_load("items", (BYTE)8, &status);
-               for (c = 0; c < status.num_items; c++)
+               for (c = 0; c < status.num_items; c++) {
                        items_sold += status.status[c].times_sold;
+                       money += (status.status[c].price * status.status[c].times_sold);
+               }
        } else
                memset(&status, 0, sizeof(struct status_array_t));
 }
 
-void load_credits() {
+void load_credits(void) {
        if (credits_exists)
                cbm_load("credits", (BYTE)8, &credits);
        else
                memset(&credits, 0, sizeof(struct credits_array_t));
 }
 
-void save_items() {
+void save_items(void) {
        if (items_exists)
                _sysremove("items");
        cbm_save("items", (BYTE)8, &status, sizeof(struct status_array_t));
        items_exists = true;
 }
 
-void save_credits() {
+void save_credits(void) {
        if (credits_exists)
                _sysremove("credits");
        cbm_save("credits", (BYTE)8, &credits, sizeof(struct credits_array_t));
        credits_exists = true;
 }
 
-void load_config() {
+void load_config(void) {
        lookup_needed_files();
 }