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RetroArch/cheat_manager.h

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __CHEAT_MANAGER_H
#define __CHEAT_MANAGER_H
#include <boolean.h>
#include <retro_common_api.h>
#include "../setting_list.h"
RETRO_BEGIN_DECLS
enum cheat_handler_type
{
CHEAT_HANDLER_TYPE_EMU = 0,
CHEAT_HANDLER_TYPE_RETRO,
CHEAT_HANDLER_TYPE_END
};
enum cheat_type
{
CHEAT_TYPE_DISABLED = 0,
CHEAT_TYPE_SET_TO_VALUE,
CHEAT_TYPE_INCREASE_VALUE,
CHEAT_TYPE_DECREASE_VALUE,
CHEAT_TYPE_RUN_NEXT_IF_EQ,
CHEAT_TYPE_RUN_NEXT_IF_NEQ,
CHEAT_TYPE_RUN_NEXT_IF_LT,
CHEAT_TYPE_RUN_NEXT_IF_GT
};
enum cheat_search_type
{
CHEAT_SEARCH_TYPE_EXACT = 0,
CHEAT_SEARCH_TYPE_LT,
CHEAT_SEARCH_TYPE_LTE,
CHEAT_SEARCH_TYPE_GT,
CHEAT_SEARCH_TYPE_GTE,
CHEAT_SEARCH_TYPE_EQ,
CHEAT_SEARCH_TYPE_NEQ,
CHEAT_SEARCH_TYPE_EQPLUS,
CHEAT_SEARCH_TYPE_EQMINUS
};
enum cheat_match_action_type
{
CHEAT_MATCH_ACTION_TYPE_VIEW = 0,
CHEAT_MATCH_ACTION_TYPE_DELETE,
CHEAT_MATCH_ACTION_TYPE_COPY,
CHEAT_MATCH_ACTION_TYPE_BROWSE
};
enum cheat_rumble_type
{
RUMBLE_TYPE_DISABLED = 0,
RUMBLE_TYPE_CHANGES,
RUMBLE_TYPE_DOES_NOT_CHANGE,
RUMBLE_TYPE_INCREASE,
RUMBLE_TYPE_DECREASE,
RUMBLE_TYPE_EQ_VALUE,
RUMBLE_TYPE_NEQ_VALUE,
RUMBLE_TYPE_LT_VALUE,
RUMBLE_TYPE_GT_VALUE,
RUMBLE_TYPE_INCREASE_BY_VALUE,
RUMBLE_TYPE_DECREASE_BY_VALUE,
RUMBLE_TYPE_END_LIST
};
/* Some codes are ridiculously large - over 10000 bytes */
#define CHEAT_CODE_SCRATCH_SIZE 16*1024
#define CHEAT_DESC_SCRATCH_SIZE 255
struct item_cheat
{
/* Clock value for when rumbling should stop */
retro_time_t rumble_primary_end_time;
retro_time_t rumble_secondary_end_time;
char *desc;
char *code;
unsigned int idx;
unsigned int handler;
/* Number of bits = 2^memory_search_size
* 0=1, 1=2, 2=4, 3=8, 4=16, 5=32
*/
unsigned int memory_search_size;
unsigned int cheat_type;
unsigned int value;
unsigned int address;
/*
* address_mask used when memory_search_size <8 bits
* if memory_search_size=0, then the number of bits is 1 and this value can be one of the following:
* 0 : 00000001
* 1 : 00000010
* 2 : 00000100
* 3 : 00001000
* 4 : 00010000
* 5 : 00100000
* 6 : 01000000
* 7 : 10000000
* if memory_search_size=1, then the number of bits is 2 and this value can be one of the following:
* 0 : 00000011
* 1 : 00001100
* 2 : 00110000
* 3 : 11000000
* if memory_search_size=2, then the number of bits is 4 and this value can be one of the following:
* 0 : 00001111
* 1 : 11110000
*/
unsigned int address_mask;
unsigned int rumble_type;
unsigned int rumble_value;
unsigned int rumble_prev_value;
unsigned int rumble_initialized;
/* 0-15 for specific port, anything else means "all ports" */
unsigned int rumble_port;
unsigned int rumble_primary_strength; /* 0-65535 */
unsigned int rumble_primary_duration; /* in milliseconds */
unsigned int rumble_secondary_strength; /* 0-65535 */
unsigned int rumble_secondary_duration; /* in milliseconds */
/*
* The repeat_ variables allow for a single cheat code to affect multiple memory addresses.
* repeat_count - the number of times the cheat code should be applied
* repeat_add_to_value - every iteration of repeat_count will have this amount added to item_cheat.value
* repeat_add_to_address - every iteration of repeat_count will have this amount added to item_cheat.address
*
* Note that repeat_add_to_address represents the number of "memory_search_size" blocks to add to
* item_cheat.address. If memory_seach_size is 16-bits and repeat_add_to_address is 2, then item_cheat.address
* will be increased by 4 bytes 2*(16-bits) for every iteration.
*
* This is a cheating structure used for codes like unlocking all levels, giving yourself 1 of every item,etc.
*/
unsigned int repeat_count;
unsigned int repeat_add_to_value;
unsigned int repeat_add_to_address;
bool state;
/* Whether to apply the cheat based on big-endian console memory or not */
bool big_endian;
};
struct cheat_manager
{
struct item_cheat working_cheat; /* retro_time_t alignment */
struct item_cheat *cheats;
uint8_t *curr_memory_buf;
uint8_t *prev_memory_buf;
uint8_t *matches;
uint8_t **memory_buf_list;
unsigned *memory_size_list;
unsigned int delete_state;
unsigned int loading_cheat_size;
unsigned int loading_cheat_offset;
unsigned ptr;
unsigned size;
unsigned buf_size;
unsigned total_memory_size;
unsigned num_memory_buffers;
unsigned match_idx;
unsigned match_action;
unsigned search_bit_size;
unsigned dummy;
unsigned search_exact_value;
unsigned search_eqplus_value;
unsigned search_eqminus_value;
unsigned num_matches;
unsigned browse_address;
char working_desc[CHEAT_DESC_SCRATCH_SIZE];
char working_code[CHEAT_CODE_SCRATCH_SIZE];
bool big_endian;
bool memory_initialized;
bool memory_search_initialized;
};
typedef struct cheat_manager cheat_manager_t;
extern cheat_manager_t cheat_manager_state;
unsigned cheat_manager_get_size(void);
bool cheat_manager_load(const char *path, bool append);
/**
* cheat_manager_save:
* @path : Path to cheats file (absolute path).
*
* Saves cheats to file on disk.
*
* Returns: true (1) if successful, otherwise false (0).
**/
bool cheat_manager_save(const char *path,
const char *cheat_database, bool overwrite);
bool cheat_manager_realloc(unsigned new_size, unsigned default_handler);
void cheat_manager_set_code(unsigned index, const char *str);
void cheat_manager_index_next(void);
void cheat_manager_index_prev(void);
void cheat_manager_toggle(void);
void cheat_manager_apply_cheats(void);
void cheat_manager_update(cheat_manager_t *handle, unsigned handle_idx);
void cheat_manager_toggle_index(bool apply_cheats_after_toggle,
unsigned i);
unsigned cheat_manager_get_buf_size(void);
const char *cheat_manager_get_desc(unsigned i);
const char *cheat_manager_get_code(unsigned i);
bool cheat_manager_get_code_state(unsigned i);
void cheat_manager_state_free(void);
bool cheat_manager_alloc_if_empty(void);
bool cheat_manager_copy_idx_to_working(unsigned idx);
bool cheat_manager_copy_working_to_idx(unsigned idx);
void cheat_manager_load_game_specific_cheats(const char *path_cheat_database);
void cheat_manager_save_game_specific_cheats(const char *path_cheat_database);
int cheat_manager_initialize_memory(rarch_setting_t *setting, size_t idx, bool wraparound);
int cheat_manager_search_exact(rarch_setting_t *setting, size_t idx, bool wraparound);
int cheat_manager_search_lt(rarch_setting_t *setting, size_t idx, bool wraparound);
int cheat_manager_search_gt(rarch_setting_t *setting, size_t idx, bool wraparound);
int cheat_manager_search_lte(rarch_setting_t *setting, size_t idx, bool wraparound);
int cheat_manager_search_gte(rarch_setting_t *setting, size_t idx, bool wraparound);
int cheat_manager_search_eq(rarch_setting_t *setting, size_t idx, bool wraparound);
int cheat_manager_search_neq(rarch_setting_t *setting, size_t idx, bool wraparound);
int cheat_manager_search_eqplus(rarch_setting_t *setting, size_t idx, bool wraparound);
int cheat_manager_search_eqminus(rarch_setting_t *setting, size_t idx, bool wraparound);
unsigned cheat_manager_get_state_search_size(unsigned search_size);
int cheat_manager_add_matches(const char *path,
const char *label, unsigned type, size_t idx, size_t entry_idx);
void cheat_manager_apply_retro_cheats(void);
void cheat_manager_match_action(
enum cheat_match_action_type match_action,
unsigned int target_match_idx,
unsigned int *address, unsigned int *address_mask,
unsigned int *prev_value, unsigned int *curr_value);
int cheat_manager_copy_match(rarch_setting_t *setting, size_t idx, bool wraparound);
int cheat_manager_delete_match(rarch_setting_t *setting, size_t idx, bool wraparound);
RETRO_END_DECLS
#endif
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