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annotate saves.c @ 2013:dcdad92f84a4

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Multiplying by zero and shifting by zero are very different. Fixes regression in Overdrive 2
author Michael Pavone <pavone@retrodev.com>
date Sun, 01 Nov 2020 13:28:31 -0800
parents a568dca999b2
children
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1478
da1dce39e846 Refactored save slot related logic to reduce duplication and allow reuse in new UI. Get state loading/saving mostly working in new UI
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1 #include <string.h>
da1dce39e846 Refactored save slot related logic to reduce duplication and allow reuse in new UI. Get state loading/saving mostly working in new UI
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2 #include <stdlib.h>
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3 #include "saves.h"
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4 #include "util.h"
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5
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6 #ifdef _WIN32
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7 #define localtime_r(a,b) localtime(a)
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8 #include <windows.h>
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9 #endif
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10 //0123456789012345678901234678
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11 //Slot N - December 31st, XXXX
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12 #define MAX_DESC_SIZE 40
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13
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14 char *get_slot_name(system_header *system, uint32_t slot_index, char *ext)
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15 {
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16 if (!system->save_dir) {
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17 return NULL;
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18 }
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19 char *fname;
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20 if (slot_index < 10) {
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21 size_t name_len = strlen("slot_N.") + strlen(ext) + 1;
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22 fname = malloc(name_len);
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23 snprintf(fname, name_len, "slot_%d.%s", slot_index, ext);
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24 } else {
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25 size_t name_len = strlen("quicksave.") + strlen(ext) + 1;
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26 fname = malloc(name_len);
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27 snprintf(fname, name_len, "quicksave.%s", ext);
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28 }
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29 char const *parts[] = {system->save_dir, PATH_SEP, fname};
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30 char *ret = alloc_concat_m(3, parts);
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31 free(fname);
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32 return ret;
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33 }
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34
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35 save_slot_info *get_slot_info(system_header *system, uint32_t *num_out)
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36 {
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37 save_slot_info *dst = calloc(11, sizeof(save_slot_info));
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38 time_t modtime;
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39 struct tm ltime;
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40 for (uint32_t i = 0; i <= QUICK_SAVE_SLOT; i++)
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41 {
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42 char * cur = dst[i].desc = malloc(MAX_DESC_SIZE);
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43 char * fname = get_slot_name(system, i, "state");
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44 modtime = get_modification_time(fname);
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45 free(fname);
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46 if (!modtime && system->type == SYSTEM_GENESIS) {
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47 fname = get_slot_name(system, i, "gst");
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48 modtime = get_modification_time(fname);
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49 free(fname);
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50 }
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51 if (i == QUICK_SAVE_SLOT) {
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52 cur += snprintf(cur, MAX_DESC_SIZE, "Quick - ");
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53 } else {
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54 cur += snprintf(cur, MAX_DESC_SIZE, "Slot %d - ", i);
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55 }
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56 if (modtime) {
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57 strftime(cur, MAX_DESC_SIZE - (cur - dst->desc), "%c", localtime_r(&modtime, &ltime));
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58 } else {
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59 strcpy(cur, "EMPTY");
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60 }
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a568dca999b2 Fix genesis save state loading via Nuklear UI, sms probably still needs work
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61 dst[i].modification_time = modtime;
1478
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62 }
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63 *num_out = QUICK_SAVE_SLOT + 1;
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64 return dst;
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65 }
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66
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67 void free_slot_info(save_slot_info *slots)
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68 {
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69 if (!slots) {
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70 return;
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71 }
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72 for (uint32_t i = 0; i <= QUICK_SAVE_SLOT; i++)
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73 {
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74 free(slots[i].desc);
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75 }
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76 free(slots);
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77 }