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-rw-r--r--source/nds/gcheat.c576
1 files changed, 89 insertions, 487 deletions
diff --git a/source/nds/gcheat.c b/source/nds/gcheat.c
index 062ce9d..d0ada43 100644
--- a/source/nds/gcheat.c
+++ b/source/nds/gcheat.c
@@ -1,9 +1,9 @@
/* gcheat.c
*
- * Copyright (C) 2010 dking <dking024@gmail.com>
+ * Copyright (C) 2012 GBAtemp user Nebuleon.
*
* This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licens e as
+ * modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
@@ -17,511 +17,113 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include "port.h"
#include "string.h"
#include "fs_api.h"
#include "ds2_malloc.h"
#include "gcheat.h"
#include "charsets.h"
+#include "cheats.h"
-#define MAX_SFCCHEAT_NAME 24
+extern struct SCheatData Cheat;
-
-//GCHEAT_STRUCT gcheat[MAX_CHEATS];
-unsigned int g_cheat_cell_num;
-unsigned int g_cheat_num;
-
-#define SKIP_SPACE(pt) while(' ' == *pt) pt++
-
-static unsigned char* check_is_cht(unsigned char *str)
-{
- unsigned char *pt, *pt1;
-
- if(*str == '\0') return NULL;
-
- pt = str;
- while(*pt == ' ') pt++; //Skip leading space
- if(*pt != '[') return NULL; //valid entry should be:[string]
-
- pt1 = strrchr(str, ']');
- if(pt1 == NULL) return NULL;
-
- while(*(--pt1) == ' ');
- *(pt1+1) = '\0'; //Cut trailing space between string and ']'
-
- while(*(++pt) == ' '); //Cut space between '[' and string
-
- return pt;
-}
-
-static unsigned int sscanf_hex_value(unsigned char* str, unsigned int *value)
-{
- unsigned char *pt;
- unsigned int tmp;
- unsigned char ch;
- unsigned int len;
-
- pt = str;
- len = 0;
- tmp = 0;
- while(*pt && len < 8)
- {
- ch = *pt;
- if(ch >= 'a' && ch <= 'f') ch = ch - 'a' + 0xa;
- else if(ch >= 'A' && ch <= 'F') ch = ch - 'A' + 0xa;
- else if(ch >= '0' && ch <= '9') ch = ch - '0';
- else if(ch == ' ') continue;
- else break;
-
- tmp = (tmp << 4) | ch;
- pt++;
- len += 1;
- }
-
- *value = tmp;
- return len;
-}
-
-/*
-* Convert the src string to UTF8 coding dst string, and cut to length
-*/
-int string2utf8(unsigned char *src, unsigned char* dst, unsigned int length)
+// Reads a cheat text file in BSNES's format.
+int NDSSFCLoadCheatFile(const char* filename)
{
- unsigned char *pt;
- unsigned char ch;
- unsigned short ucode;
- unsigned int type;
- unsigned int len;
+ FILE* fp = fopen(filename, "r");
+ if (fp == NULL)
+ return -1;
- len = 0;
- type = 0;
- pt = src;
- while(*pt)
+ S9xDeleteCheats();
+
+ // The construction is "a","b","c" <newline>.
+ // a is ignored. In BSNES, it decides whether the code is enabled.
+ // b is a series of codes separated by +. Each of the codes is in the form
+ // accepted by the Game Genie, Pro Action Replay, or the GoldFinger.
+ // c is the cheat's description.
+ char line[256], code[24];
+ char *description, *codes_ptr;
+ uint32 address;
+ uint8 byte;
+ uint8 bytes [3];
+ bool8 sram;
+ uint8 num_bytes;
+
+ while (fgets(line, sizeof(line), fp))
{
- pt = utf8decode(pt, &ucode);
- if(ucode < 0x4e00) {
- if(ucode == 0 || ucode > 0x7F) {
- type = 1;
- break;
- }
- } else if(ucode > 0x9FCF) {
- type = 1;
- break;
+ char* ptr = &line[0];
+ // Ignore a.
+ while (*ptr && *ptr != ',')
+ ptr++;
+ // If there was no comma, declare a bad file.
+ if (*ptr == '\0') {
+ fclose(fp);
+ return -2;
}
- else
- len++;
-
- if(len >= 3) break; //There is enough UTF8, so it is, to save time(>_*)
- }
+ *ptr++; // Past the comma
+
+ if (*ptr && *ptr == '"')
+ ptr++; // Starting quote of b.
+ codes_ptr = ptr; // Save this for later.
+ while (*ptr && *ptr != ',')
+ ptr++;
+ // If there was no comma, declare a bad file.
+ if (*ptr == '\0') {
+ fclose(fp);
+ return -2;
+ }
+ *ptr = '\0'; // End the codes there
+ *ptr++; // Past the comma
+
+ uint32 i = 0;
+ description = ptr; // Skip starting " in description
+ while (*description && *description == '"')
+ description++;
+ ptr = description;
+ while (*ptr && !(*ptr == '\r' || *ptr == '\n' || *ptr == '"') && i < MAX_SFCCHEAT_NAME - 1) {
+ ptr++; // Remove trailing newline/quote in description
+ i++; // Clip the cheat name to MAX_SFCCHEAT_NAME chars
+ }
+ *ptr = '\0';
- if(type == 0) //UTF8
- {
- while(*src)
- {
- ch = *src++;
- *dst++ = ch;
+ uint32 c;
+ // n is the number of cheat codes. Beware of MAX_CHEATS_T.
- if(ch < 0x80) {
- if(length > 1) length -= 1;
- else break;
- } else if (ch < 0xe0) { /* U-00000080 - U-000007FF, 2 bytes */
- if(length > 2) length -= 2;
- else break;
- *dst++ = *src++;
- } else if (ch < 0xf0) { /* U-00000800 - U-0000FFFF, 3 bytes */
- if(length > 3) length -= 3;
- else break;
- *dst++ = *src++;
- *dst++ = *src++;
- } else if (ch < 0xf5) { /* U-00010000 - U-001FFFFF, 4 bytes */
- if(length > 4) length -= 4;
- else break;
- *dst++ = *src++;
- *dst++ = *src++;
- *dst++ = *src++;
- } else {
- break;
+ // List of cheat codes having the same description.
+ ptr = codes_ptr;
+ while (*ptr && !(*ptr == ',' || *ptr == '"')) {
+ if (Cheat.num_cheats >= MAX_CHEATS_T) {
+ fclose(fp);
+ return 0;
}
- }
- *dst = '\0';
- }
- else //assume it is GBK code
- {
- //GBK to UTF8
- while(*src)
- {
- ch = *src;
- if(ch < 0x80)
- {
- if(length > 1) length -= 1;
- else break;
-
- *dst++= ch;
- src ++;
+ i = 0;
+ while (*ptr && !(*ptr == '+' || *ptr == ',' || *ptr == '"') && i < sizeof(code) - 1)
+ code[i++] = *ptr++;
+ if (*ptr)
+ ptr++; // Go past the + , or "
+ code[i] = '\0';
+ if (!S9xGameGenieToRaw (code, &address, &byte)) {
+ S9xAddCheat (FALSE, FALSE, address, byte);
+ strncpy (Cheat.c[Cheat.num_cheats - 1].name, description, MAX_SFCCHEAT_NAME);
+ }
+ else if (!S9xProActionReplayToRaw (code, &address, &byte)) {
+ S9xAddCheat (FALSE, FALSE, address, byte);
+ strncpy (Cheat.c[Cheat.num_cheats - 1].name, description, MAX_SFCCHEAT_NAME);
}
- else
+ else if (!S9xGoldFingerToRaw (code, &address, &sram, &num_bytes, bytes))
{
- ucode = charsets_gbk_to_ucs(src);
-
- if (ucode < 0x800) //2 bytes
- {
- if(length > 2) length -= 2;
- else break;
-
- *dst++ = 0xC0 | ((ucode >> 6) & 0x1F);
- *dst++ = 0x80 | (ucode & 0x3F);
- }
- else //3 bytes
- {
- if(length > 3) length -= 3;
- else break;
-
- *dst++ = 0xE0 | (ucode >> 12);
- *dst++ = 0x80 | ((ucode >>6) & 0x3F);
- *dst++ = 0x80 | (ucode & 0x3F);
+ for (c = 0; c < num_bytes; c++) {
+ S9xAddCheat (FALSE, FALSE, address + c, bytes[c]);
+ strncpy (Cheat.c[Cheat.num_cheats - 1].name, description, MAX_SFCCHEAT_NAME);
}
-
- src += 2;
}
- }
- *dst = '\0';
- }
-
- return 0;
-}
-
-int load_cheatname(const char* filename, unsigned int string_num, unsigned int string_len, MSG_TABLE* mssg_table)
-{
- FILE *fp;
- unsigned char current_line[256];
- unsigned char current_line_tmp[256];
- int len, m;
- unsigned char** indexp;
- unsigned char* msg;
- unsigned char* pt;
-
- mssg_table->msg_index = (unsigned char**)malloc(string_num*4);
- if(NULL == mssg_table->msg_index)
- return -1;
-
- string_len = string_len + string_len/2;
- mssg_table->msg_pool = (unsigned char*)malloc((string_len+31)&(~31));
- if(NULL == mssg_table->msg_pool) {
- free((void*)mssg_table->msg_index);
- return -1;
- }
-
- fp = fopen(filename, "r");
- if(fp == NULL) {
- free((void*)mssg_table->msg_index);
- free((void*)mssg_table->msg_pool);
- return -1;
- }
-
- len = 0;
- m= 0;
- indexp = mssg_table->msg_index;
- msg = mssg_table->msg_pool;
- while(fgets(current_line, 256, fp))
- {
- unsigned int str_len;
-
- if((pt = check_is_cht(current_line)) != NULL)
- {
- if(!strcasecmp(pt, "gameinfo"))
- continue;
-
- string2utf8(pt, current_line_tmp, 255);
-
- str_len = strlen(current_line_tmp);
- strncpy(msg+len, current_line_tmp, str_len);
-
- indexp[m++] = msg+len;
- len += str_len;
- msg[len] = '\0';
- len += 1;
-
- if(len >= string_len) break;
- if(m >= string_num) break;
-
- while(fgets(current_line, 256, fp))
- {
- str_len = strlen(current_line);
- if(str_len < 4) break;
-
- if((pt = strchr(current_line, '=')) == NULL) //valid cheat item
- break;
-
- *pt = '\0';
- pt = current_line;
-
- string2utf8(pt, current_line_tmp, 255);
-
- str_len = strlen(current_line_tmp);
- strncpy(msg+len, current_line_tmp, str_len);
-
- indexp[m++] = msg+len;
- len += str_len;
- msg[len] = '\0';
- len += 1;
-
- if(len >= string_len) break;
- if(m >= string_num) break;
+ else {
+ fclose(fp);
+ return -3; // Bad cheat format
}
-
- if(len >= string_len) break;
- if(m >= string_num) break;
- }
- }
-
- mssg_table -> msg_num = m;
- fclose(fp);
-
-#if 0
-cprintf("string_len %d; len %d\n", string_len, len);
-for(m= 0; m<mssg_table -> msg_num; m++)
-{
-cprintf("msg%d:%s\n", m, indexp[m]);
-}
-#endif
-
- return 0;
-}
-
-#define MAX_CHEAT_DATE_LEN (MAX_SFCCHEAT_NAME/2) //other part hold the saved data
-
-/*
-* Load cheat file
-*/
-int load_cheatfile(const char* filename, unsigned int *string_num, unsigned int *string_len,
- GCHEAT_STRUCT *gcheat)
-{
- FILE *cheats_file;
- unsigned char current_line[256];
- unsigned char current_line_tmp[256];
- unsigned int current_line_len;
- unsigned char *pt;
- int gcheat_num;
-
- unsigned int str_num;
- unsigned int str_len;
- unsigned int cheat_cell_num;
- int flag;
-
- cheats_file = fopen(filename, "r");
- if(NULL == cheats_file)
- return -1;
- g_cheat_cell_num = 0;
- g_cheat_num = 0;
- cheat_cell_num = 0;
- gcheat_num = 0;
- str_num = 0;
- str_len = 0;
- flag = 0;
-
- while(fgets(current_line, 256, cheats_file))
- {
- if((pt = check_is_cht(current_line)) == NULL) //Check valid cht cheat
- continue;
-
- if(!strcasecmp(pt, "gameinfo")) //maybe file end
- continue;
-
- gcheat[gcheat_num].name_id = str_num;
- gcheat[gcheat_num].item_id = cheat_cell_num;
- gcheat[gcheat_num].item_num = 0;
-
- string2utf8(pt, current_line_tmp, CHEAT_NAME_LENGTH);
- strcpy(gcheat[gcheat_num].name_shot, current_line_tmp); //store a cut name shot
- //Initialize other parameter of gcheat
- gcheat[gcheat_num].active = 0;
- gcheat[gcheat_num].sub_active = 0;
-
- current_line_len = strlen(pt);
- str_len += current_line_len +1;
- str_num++;
-
- //Cheat items
- while(fgets(current_line, 256, cheats_file) != NULL)
- {
- if(strlen(current_line) < 4)
- break;
-
- if((pt = strchr(current_line, '=')) == NULL) //No valid content
- break;
-
- //one sub item each pass
- unsigned int first_part; //first part of a cheat item
- unsigned int first_part_id;
- unsigned int sub_part_id;
- unsigned int hex_len;
-
- unsigned int cheat_addr;
- unsigned char cheat_dat[MAX_CHEAT_DATE_LEN];
- unsigned int cheat_dat_len;
- unsigned int str_num_saved;
-
- str_num_saved = str_num;
- str_len += pt - current_line +1;
- str_num++;
-
- first_part = 1;
- first_part_id = cheat_cell_num;
- sub_part_id = 0;
-
- //skip name part
- pt += 1;
- current_line_len = strlen(pt);
-
- //data part
- while(1)
- {
- //fill current_line buffer as full as possible
- if(current_line_len < (MAX_CHEAT_DATE_LEN*3+8))
- { //the data length can fill a cheat cell
- if(NULL == strchr(pt, 0x0A)) { //this line not end
- memmove(current_line, pt, current_line_len+1);
- fgets(current_line+current_line_len, 256-current_line_len, cheats_file);
- pt = current_line;
- current_line_len = strlen(pt);
- }
- }
-#if 0
-cprintf("------\n");
-cprintf("new %d:[%s]\n", current_line_len, pt);
-dump_mem(pt, strlen(pt));
-cprintf("\n------\n");
-#endif
- //get address
- if(first_part)
- {
- hex_len = sscanf_hex_value(pt, &cheat_addr);
- if(0 == hex_len) {
- goto load_cheatfile_error;
- }
-
- pt += hex_len;
- current_line_len -= hex_len +1;
- // strict to follow the formate
- if(',' != *pt++ || '\0' == *pt || 0x0D == *pt || 0x0A == *pt) {
- goto load_cheatfile_error;
- }
-
- if(cheat_addr < 0x10000)
- cheat_addr |= 0x7e0000;
- else {
- cheat_addr &= 0xffff;
- cheat_addr |= 0x7f0000;
- }
- }
-
- //get data
- unsigned int tmp, m;
-
- m = 0;
- cheat_dat_len = 0;
- while(m++ < MAX_CHEAT_DATE_LEN)
- {
- hex_len = sscanf_hex_value(pt, &tmp);
- if(0 == hex_len) break;
-
- cheat_dat[cheat_dat_len++] = (unsigned char)tmp;
-
- pt += hex_len;
- current_line_len -= hex_len +1;
- if(',' == *pt) pt++;
- }
-
- //In first part, get data error
- if(0 == cheat_dat_len) {
- if(0 == sub_part_id)
- goto load_cheatfile_error;
- }
- else {
- //record data
- flag = S9xAddCheat_ex(cheat_addr, cheat_dat, cheat_dat_len, cheat_cell_num++, sub_part_id++, str_num_saved);
- if(0 != flag) {
- cheat_cell_num -= sub_part_id;
- break;
- }
- }
-
- if(0 == *pt || 0x0D == *pt || 0x0A == *pt) break; //a line over
-
- first_part = 0;
- if(';' == *pt) first_part = 1, pt += 1; //other address of the cheat cell
- else cheat_addr += cheat_dat_len; //more data
- } //data part
-
- //have no enough cheat_cell struct to store cheat
- if(0 != flag) break;
-
- S9xAddCheat_ov(first_part_id, sub_part_id);
- gcheat[gcheat_num].item_num += 1;
- } //Cheat items
-
- if(0 != flag) break;
-
- gcheat_num += 1;
- if(gcheat_num >= MAX_CHEATS)
- break;
- }
-
- g_cheat_cell_num = cheat_cell_num;
- g_cheat_num = gcheat_num;
- *string_num = str_num;
- *string_len = str_len;
- fclose(cheats_file);
-
-#if 0
-cprintf("g_cheat_num %d; g_cheat_cell_num %d\n", g_cheat_num, g_cheat_cell_num);
-
-int i;
-for(i= 0; i < g_cheat_cell_num; i++)
-S9x_dumpcheat(i);
-
-for(i= 0; i < g_cheat_num; i++)
-{
- cprintf("cheat %d\n", i);
- cprintf("item num %d; item id %d\n", gcheat[i].item_num, gcheat[i].item_id);
-}
-#endif
-
- return 0;
-
-load_cheatfile_error:
- fclose(cheats_file);
- return -1;
-}
-
-void gcheat_Managment(GCHEAT_STRUCT *gcheat)
-{
- unsigned int i, enable, m, en_flag;
- unsigned int active, item_id, sub_active, item_num;
-
- //no cheat
- if(0 == g_cheat_num || 0 == g_cheat_cell_num) {
- S9xCheat_Disable();
- return;
- }
-
- enable = 0;
- for(i = 0; i < g_cheat_num; i++)
- {
- active = gcheat[i].active & 0x1;
- item_id = gcheat[i].item_id;
- item_num = gcheat[i].item_num;
- sub_active = gcheat[i].sub_active;
-
- for(m = 0; m < item_num; m++)
- {
- en_flag = sub_active == m ? active : 0;
- S9xCheat_switch(item_id, m, en_flag);
}
-
- if(active) enable = 1;
}
- if(enable)
- S9xCheat_Enable();
+ fclose(fp);
+ return 0;
}
-
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