mirror of
https://github.com/parasyte/alt64
synced 2024-11-02 00:05:03 -04:00
cheatfile done
This commit is contained in:
Robin Jones
parent
00f4e5b69b
commit
bb14fcd8c8
342
src/main.c
342
src/main.c
@ -1724,7 +1724,9 @@ int saveTypeToSd(display_context_t disp, char *rom_name, int stype)
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if (result == FR_OK)
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{
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//for savegame
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uint8_t cartsave_data[size] = {0};
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uint8_t cartsave_data[size]; //TODO: bring back old initialisation if this doesn't work
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TRACEF(disp, "cartsave_data=%p", &cartsave_data);
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@ -2015,173 +2017,185 @@ int readCheatFile(char *filename, u32 *cheat_lists[2])
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yaml_parser_initialize(&parser);
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FatRecord rec_tmpf;
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if (fatFindRecord(filename, &rec_tmpf, 0) != 0)
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FRESULT result;
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FIL file;
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UINT bytesread;
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result = f_open(&file, filename, FA_READ);
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if (result == FR_OK)
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{
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int fsize = f_size(&file);
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char *cheatfile = malloc(fsize);
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if (!cheatfile)
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{
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return -2; // Out of memory
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}
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/*
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* Size of the cheat list can never be more than half the size of the YAML
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* Minimum YAML example:
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* A:-80001234 FFFF
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* Which is exactly 16 bytes.
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* The cheat list in this case fits into exactly 8 bytes (2 words):
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* 0x80001234, 0x0000FFFF
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*/
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list1 = calloc(1, fsize + 2 * sizeof(u32)); // Plus 2 words to be safe
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if (!list1)
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{
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// Free
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free(cheatfile);
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return -2; // Out of memory
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}
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list2 = &list1[fsize / sizeof(u32) / 2];
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cheat_lists[0] = list1;
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cheat_lists[1] = list2;
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result =
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f_read (
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&file, /* [IN] File object */
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&cheatfile, /* [OUT] Buffer to store read data */
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fsize, /* [IN] Number of bytes to read */
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&bytesread /* [OUT] Number of bytes read */
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);
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result = f_close(&file);
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yaml_parser_set_input_string(&parser, cheatfile, strlen(cheatfile));
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do
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{
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if (!yaml_parser_parse(&parser, &event))
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{
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// Free
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yaml_parser_delete(&parser);
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yaml_event_delete(&event);
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free(cheatfile);
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free(cheat_lists[0]);
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cheat_lists[0] = 0;
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cheat_lists[1] = 0;
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return -3; // Parse error
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}
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// Process YAML
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switch (event.type)
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{
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case YAML_MAPPING_START_EVENT:
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// Begin code block
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is_code = 0;
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break;
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case YAML_SEQUENCE_START_EVENT:
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// Begin code lines
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is_code = 1;
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code_on = (event.data.sequence_start.tag ? !!strcasecmp(event.data.sequence_start.tag, "!off") : 1);
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break;
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case YAML_SEQUENCE_END_EVENT:
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// End code lines
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is_code = 0;
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code_on = 1;
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repeater = 0;
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break;
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case YAML_SCALAR_EVENT:
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// Code line
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if (!is_code || !code_on)
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{
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break;
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}
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address = strtoul(event.data.scalar.value, &next, 16);
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value = strtoul(next, NULL, 16);
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// Do not check code types within "repeater data"
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if (repeater)
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{
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repeater--;
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*list2++ = address;
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*list2++ = value;
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break;
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}
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// Determine destination cheat_list for the code type
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switch (address >> 24)
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{
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// Uncessary code types
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case 0x20: // Clear code list
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case 0xCC: // Exception Handler Selection
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case 0xDE: // Entry Point
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break;
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// Boot-time cheats
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case 0xEE: // Disable Expansion Pak
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case 0xF0: // 8-bit Boot-Time Write
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case 0xF1: // 16-bit Boot-Time Write
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case 0xFF: // Cheat Engine Location
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*list1++ = address;
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*list1++ = value;
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break;
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// In-game cheats
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case 0x50: // Repeater/Patch
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// Validate repeater count
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if (address & 0x0000FF00)
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{
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repeater = 1;
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*list2++ = address;
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*list2++ = value;
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}
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break;
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// Everything else
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default:
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if (!address)
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{
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// TODO: Support special code types! :)
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}
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// Fall-through!
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case 0xD0: // 8-bit Equal-To Conditional
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case 0xD1: // 16-bit Equal-To Conditional
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case 0xD2: // 8-bit Not-Equal-To Conditional
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case 0xD3: // 16-bit Not-Equal-To Conditional
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// Validate 16-bit codes
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if ((address & 0x01000001) == 0x01000001)
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{
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break;
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}
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*list2++ = address;
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*list2++ = value;
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break;
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}
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break;
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case YAML_STREAM_END_EVENT:
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// And we're outta here!
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done = 1;
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break;
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default:
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break;
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}
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yaml_event_delete(&event);
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} while (!done);
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// Free
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yaml_parser_delete(&parser);
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free(cheatfile);
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return repeater; // Ok or repeater error
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}
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else
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{
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return -1; //err file not found
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}
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u8 resp = 0;
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resp = fatOpenFileByName(filename, 0);
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//filesize of the opend file -> is the readfile / 512
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int fsize = file.sec_available * 512;
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char *cheatfile = malloc(fsize);
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if (!cheatfile)
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{
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return -2; // Out of memory
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}
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/*
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* Size of the cheat list can never be more than half the size of the YAML
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* Minimum YAML example:
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* A:-80001234 FFFF
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* Which is exactly 16 bytes.
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* The cheat list in this case fits into exactly 8 bytes (2 words):
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* 0x80001234, 0x0000FFFF
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*/
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list1 = calloc(1, fsize + 2 * sizeof(u32)); // Plus 2 words to be safe
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if (!list1)
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{
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// Free
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free(cheatfile);
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return -2; // Out of memory
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}
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list2 = &list1[fsize / sizeof(u32) / 2];
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cheat_lists[0] = list1;
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cheat_lists[1] = list2;
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resp = fatReadFile(cheatfile, fsize / 512); //1 cluster
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yaml_parser_set_input_string(&parser, cheatfile, strlen(cheatfile));
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do
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{
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if (!yaml_parser_parse(&parser, &event))
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{
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// Free
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yaml_parser_delete(&parser);
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yaml_event_delete(&event);
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free(cheatfile);
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free(cheat_lists[0]);
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cheat_lists[0] = 0;
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cheat_lists[1] = 0;
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return -3; // Parse error
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}
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// Process YAML
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switch (event.type)
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{
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case YAML_MAPPING_START_EVENT:
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// Begin code block
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is_code = 0;
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break;
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case YAML_SEQUENCE_START_EVENT:
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// Begin code lines
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is_code = 1;
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code_on = (event.data.sequence_start.tag ? !!strcasecmp(event.data.sequence_start.tag, "!off") : 1);
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break;
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case YAML_SEQUENCE_END_EVENT:
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// End code lines
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is_code = 0;
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code_on = 1;
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repeater = 0;
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break;
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case YAML_SCALAR_EVENT:
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// Code line
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if (!is_code || !code_on)
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{
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break;
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}
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address = strtoul(event.data.scalar.value, &next, 16);
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value = strtoul(next, NULL, 16);
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// Do not check code types within "repeater data"
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if (repeater)
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{
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repeater--;
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*list2++ = address;
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*list2++ = value;
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break;
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}
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// Determine destination cheat_list for the code type
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switch (address >> 24)
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{
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// Uncessary code types
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case 0x20: // Clear code list
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case 0xCC: // Exception Handler Selection
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case 0xDE: // Entry Point
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break;
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// Boot-time cheats
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case 0xEE: // Disable Expansion Pak
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case 0xF0: // 8-bit Boot-Time Write
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case 0xF1: // 16-bit Boot-Time Write
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case 0xFF: // Cheat Engine Location
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*list1++ = address;
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*list1++ = value;
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break;
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// In-game cheats
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case 0x50: // Repeater/Patch
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// Validate repeater count
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if (address & 0x0000FF00)
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{
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repeater = 1;
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*list2++ = address;
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*list2++ = value;
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}
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break;
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// Everything else
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default:
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if (!address)
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{
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// TODO: Support special code types! :)
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}
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// Fall-through!
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case 0xD0: // 8-bit Equal-To Conditional
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case 0xD1: // 16-bit Equal-To Conditional
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case 0xD2: // 8-bit Not-Equal-To Conditional
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case 0xD3: // 16-bit Not-Equal-To Conditional
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// Validate 16-bit codes
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if ((address & 0x01000001) == 0x01000001)
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{
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break;
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}
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*list2++ = address;
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*list2++ = value;
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break;
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}
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break;
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case YAML_STREAM_END_EVENT:
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// And we're outta here!
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done = 1;
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break;
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default:
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break;
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}
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yaml_event_delete(&event);
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} while (!done);
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// Free
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yaml_parser_delete(&parser);
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free(cheatfile);
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return repeater; // Ok or repeater error
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}
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//TODO: UNUSED CODE, WHAT IS IS FOR? BattleTanx??? but where to insert it???
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