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rts4ds/source/fileio.c
Sander Stolk 8039bd86c9 Initial release of RTS4DS source code.
2025-04-04 16:33:39 +02:00

581 lines
21 KiB
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// SPDX-License-Identifier: MIT
// Copyright © 2007-2025 Sander Stolk
#include "fileio.h"
#include "game.h"
#include "factions.h"
#include "view.h"
#include "settings.h"
#include <fat.h>
#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <filesystem.h> // include NitroFS lib
#ifndef DEFAULT_LOCATION_NDS
#define DEFAULT_LOCATION_NDS "fat:/rts4ds.nds"
#endif
#ifndef FS_ROOT_NITRO
#define FS_ROOT_NITRO "nitro:/"
#endif
#ifndef FS_ROOT_FAT
#define FS_ROOT_FAT "fat:/rts4ds/"
#endif
//#define ENABLE_LZSS_COMPRESSION
#define FIO_MAX_FILES_OPEN 10
#define PROJECT_PALETTES_LOCATION "palettes/"
#define PROJECT_MENUS_LOCATION "menus/"
#define PROJECT_BRIEFINGPICTURES_LOCATION "briefingpics/"
#define PROJECT_ANIMATIONS_LOCATION "animations/"
#define PROJECT_SUBTITLES_LOCATION "subtitles/"
#define PROJECT_GUI_LOCATION "gui/"
#define PROJECT_ICONS_LOCATION "icons/"
#define PROJECT_FACTIONS_LOCATION "factions/"
#define PROJECT_ENVIRONMENT_LOCATION "environment/"
#define PROJECT_SHROUD_LOCATION "shroud/"
#define PROJECT_STRUCTURES_LOCATION "structures/"
#define PROJECT_FLAG_LOCATION "flags/"
#define PROJECT_UNITS_LOCATION "units/"
#define PROJECT_PROJECTILES_LOCATION "projectiles/"
#define PROJECT_SMOKE_LOCATION "smoke/"
#define PROJECT_EXPLOSIONS_LOCATION "explosions/"
#define PROJECT_OVERLAY_LOCATION "overlay/"
#define PROJECT_SCENARIOS_LOCATION "scenarios/"
#define PROJECT_STRUCTURES_TECHTREE_LOCATION "techtrees/"
#define PROJECT_UNITS_TECHTREE_LOCATION "techtrees/"
#define PROJECT_AI_LOCATION "ai/"
#define PROJECT_GAMEINFO_LOCATION "gameinfo/"
#define PROJECT_SOUNDEFFECTS_LOCATION "sound/"
#define PROJECT_MUSIC_LOCATION "music/"
#define PREFIX_FS_SCENARIO_MAP "MAP" /* .TXT */
bool useFAToverNitroFS;
char *currentProjectDirname;
void setCurrentProjectDirname(char *string) {
currentProjectDirname = string;
}
void replaceEOLwithEOF(char *buff, int size) {
int i;
for (i=0; i<size; i++) {
if (buff[i] == '\n') {
buff[i] = '\0';
return;
}
}
}
void myGetStr(FILE *fp, char *buff, int size) {
*buff = fgetc(fp);
while((*buff != '\n') && (*buff != 0xD) && (*buff != 0x0)) {
buff++;
*buff = fgetc(fp);
}
if (buff[0] != 0) {
buff[0] = '\n';
buff[1] = 0;
}
}
void readstr(FILE *fp, char *string) {
do {
myGetStr(fp, string, 255);
} while ((string[0] == '/') || (string[0] == '\n' ));
}
/*bool fileLocator(char *start, char *target, bool isDir, int depth, char *result) {
char *childName;
unsigned char childType;
char temp[256];
DIR *dir = opendir(start);
if (dir != NULL) {
while(true) {
struct dirent* dirEntry = readdir(dir);
if(dirEntry == NULL) break;
childName = dirEntry->d_name;
childType = dirEntry->d_type;
if ((strlen(childName) == 1 && childName[0] == '.') ||
(strlen(childName) == 2 && childName[0] == '.' && childName[1] == '.'))
continue;
if ((childType == DT_DIR) == isDir) {
if (strcmp(target, childName) == 0) {
strcpy(result, start);
if (start[strlen(start)-1] != '/')
strcat(result, "/");
strcat(result, childName);
if (isDir)
strcat(result, "/");
closedir(dir);
return true;
}
}
if ((childType == DT_DIR) && depth > 1) {
strcpy(temp, start);
if (start[strlen(start)-1] != '/')
strcat(temp, "/");
strcat(temp, childName);
strcat(temp, "/");
if (fileLocator(temp, target, isDir, depth-1, result)) {
closedir(dir);
return true;
}
}
}
}
closedir(dir);
return false;
}*/
void closeFile(FILE *fp) {
if (fclose(fp))
error("FAT could not close a file", "");
}
FILE *openFile(char *string, enum FileType type) {
char filepath_relative[1024];
FILE *fp;
if (type == FS_RTS4DS_FILE)
strcpy(filepath_relative, string);
else {
strcpy(filepath_relative, currentProjectDirname);
strcat(filepath_relative, "/");
switch (type) {
case FS_PROJECT_FILE:
strcat(filepath_relative, string);
break;
case FS_PALETTES:
case FS_OPTIONAL_ENVIRONMENT_PALETTES:
strcat(filepath_relative, PROJECT_PALETTES_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_MENU_GRAPHICS:
strcat(filepath_relative, PROJECT_MENUS_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_BRIEFINGPICTURES_GRAPHICS:
strcat(filepath_relative, PROJECT_BRIEFINGPICTURES_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".gif");
break;
case FS_ANIMATIONS_FILE:
strcat(filepath_relative, PROJECT_ANIMATIONS_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".ini");
break;
case FS_ANIMATIONS_GRAPHICS:
strcat(filepath_relative, PROJECT_ANIMATIONS_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".gif");
break;
case FS_ANIMATIONS_OVERLAY_GRAPHICS:
strcat(filepath_relative, PROJECT_ANIMATIONS_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".bin");
break;
case FS_SUBTITLES_INFO:
strcat(filepath_relative, PROJECT_SUBTITLES_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".ini");
break;
case FS_SUBTITLES_GRAPHICS:
strcat(filepath_relative, PROJECT_SUBTITLES_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_GUI_GRAPHICS:
strcat(filepath_relative, PROJECT_GUI_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_ICONS_GRAPHICS:
strcat(filepath_relative, PROJECT_ICONS_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_FACTIONS_INFO:
strcat(filepath_relative, PROJECT_FACTIONS_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".ini");
break;
case FS_FACTIONS_GRAPHICS:
strcat(filepath_relative, PROJECT_FACTIONS_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_ENVIRONMENT_INFO:
case FS_ENVIRONMENT_PALCYCLE_INFO:
strcat(filepath_relative, PROJECT_ENVIRONMENT_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".ini");
break;
case FS_ENVIRONMENT_GRAPHICS:
strcat(filepath_relative, PROJECT_ENVIRONMENT_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_SHROUD_GRAPHICS:
strcat(filepath_relative, PROJECT_SHROUD_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_STRUCTURES_INFO:
strcat(filepath_relative, PROJECT_STRUCTURES_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".ini");
break;
case FS_STRUCTURES_GRAPHICS:
strcat(filepath_relative, PROJECT_STRUCTURES_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_FLAG_GRAPHICS:
strcat(filepath_relative, PROJECT_FLAG_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_UNITS_INFO:
strcat(filepath_relative, PROJECT_UNITS_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".ini");
break;
case FS_UNITS_GRAPHICS:
strcat(filepath_relative, PROJECT_UNITS_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_PROJECTILES_INFO:
strcat(filepath_relative, PROJECT_PROJECTILES_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".ini");
break;
case FS_PROJECTILES_GRAPHICS:
strcat(filepath_relative, PROJECT_PROJECTILES_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_SMOKE_GRAPHICS:
strcat(filepath_relative, PROJECT_SMOKE_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_EXPLOSIONS_INFO:
strcat(filepath_relative, PROJECT_EXPLOSIONS_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".ini");
break;
case FS_EXPLOSIONS_GRAPHICS:
strcat(filepath_relative, PROJECT_EXPLOSIONS_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_OVERLAY_GRAPHICS:
strcat(filepath_relative, PROJECT_OVERLAY_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin");
#endif
break;
case FS_SCENARIO_FILE:
strcat(filepath_relative, PROJECT_SCENARIOS_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".ini");
break;
case FS_CURRENT_SCENARIO_FILE:
strcat(filepath_relative, PROJECT_SCENARIOS_LOCATION);
strcat(filepath_relative, "scenario_");
if (getGameType() != SINGLEPLAYER)
strcat(filepath_relative, "multiplayer_testlevel");
else {
strcat(filepath_relative, factionInfo[getFaction(FRIENDLY)].name);
sprintf(filepath_relative + strlen(filepath_relative), "_level%i_region%i", getLevel(), getRegion());
}
strcat(filepath_relative, ".ini");
break;
case FS_SCENARIO_MAP:
strcat(filepath_relative, PROJECT_SCENARIOS_LOCATION);
strcat(filepath_relative, PREFIX_FS_SCENARIO_MAP);
strcat(filepath_relative, string);
strcat(filepath_relative, ".txt");
break;
case FS_STRUCTURES_TECHTREE_FILE:
strcat(filepath_relative, PROJECT_STRUCTURES_TECHTREE_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, "_structures.ini");
break;
case FS_UNITS_TECHTREE_FILE:
strcat(filepath_relative, PROJECT_UNITS_TECHTREE_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, "_units.ini");
break;
case FS_AI_FILE:
strcat(filepath_relative, PROJECT_AI_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".ini");
break;
case FS_GAMEINFO_GRAPHICS:
strcat(filepath_relative, PROJECT_GAMEINFO_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".gif");
break;
case FS_SOUNDEFFECT:
strcat(filepath_relative, PROJECT_SOUNDEFFECTS_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".wav.lzc");
#else
strcat(filepath_relative, ".wav");
#endif
break;
case FS_MUSIC:
strcat(filepath_relative, PROJECT_MUSIC_LOCATION);
strcat(filepath_relative, string);
#ifdef ENABLE_LZSS_COMPRESSION
strcat(filepath_relative, ".bin.lzc");
#else
strcat(filepath_relative, ".bin"); // used to be .mod only; now soundbanks created by mmutils from .mod, .it, or other tracker files
#endif
break;
case FS_MUSIC_INFO:
strcat(filepath_relative, PROJECT_MUSIC_LOCATION);
strcat(filepath_relative, string);
strcat(filepath_relative, ".ini");
break;
default:
break;
}
}
// open the filepath (which is relative to root)
chdir(useFAToverNitroFS ? FS_ROOT_FAT : FS_ROOT_NITRO);
fp = fopen(filepath_relative, "r");
if (!fp && type != FS_OPTIONAL_ENVIRONMENT_PALETTES && type != FS_ENVIRONMENT_PALCYCLE_INFO && type != FS_SOUNDEFFECT && type != FS_MUSIC && type != FS_MUSIC_INFO && type != FS_ANIMATIONS_FILE && type != FS_GAMEINFO_GRAPHICS && (type != FS_MENU_GRAPHICS || strncmp(string, "gameinfo", strlen("gameinfo"))))
error("Could not open requested file:", filepath_relative);
return fp;
}
// Function openSaveFile.
// param slot: >= 0 is ingame savestate
// < 0 is settings file
FILE *openSaveFile(int slot, char *attributes) {
char filepath[1024];
// argv[0] is sure to have been initialized (see initFileIO)
strcpy(filepath, __system_argv->argv[0]);
#ifndef DISABLE_MENU_RTS4DS
strcat(filepath, currentProjectDirname);
#endif
if (slot < 0)
strcat(filepath, ".settings.sav");
else// {
sprintf(filepath + strlen(filepath), "%s%i%s", ".slot", slot, ".sav");
chdir("fat:/");
return fopen(filepath, attributes);
}
FILE *openScreenshotFile(char *name, char *attributes) {
char filepath[1024];
// argv[0] is sure to have been initialized (see initFileIO)
strcpy(filepath, __system_argv->argv[0]);
strcat(filepath, ".");
strcat(filepath, name);
return fopen(filepath, attributes);
}
#ifdef ENABLE_LZSS_COMPRESSION
// BIOS Function helper
int getSize(uint8 * source, uint16 * dest, uint32 r2) {
u32 size = *((u32*)source) >> 8;
return (size<<8) | 16;
}
// BIOS Function helper
uint8 readByte(uint8 * source) {
return *source++;
}
// Decompresses using BIOS LZ77 Compression, writing half-words at a time
int decompressToVRAM(void* dest, char *string, enum FileType type) {
int result;
void *buffer;
FILE *fp;
int size;
TDecompressionStream decStream = {getSize, NULL, readByte};
fp = openFile(string, type);
if (!fp)
return 0;
fseek(fp, 0, SEEK_END);
size = ftell(fp);
rewind(fp);
if (size == 0)
return 0;
buffer = malloc(size);
if (!buffer)
errorSI("Failed to malloc in decompressToVRAM", size);
fread(buffer, 1, size, fp);
closeFile(fp);
result = swiDecompressLZSSVram(buffer, dest, 0, &decStream);
free(buffer);
return result;
}
inline unsigned int copyFile(void *dest, char *string, enum FileType type) {
return decompressToVRAM(dest, string, type);
}
inline unsigned int copyFileVRAM(uint16 *dest, char *string, enum FileType type) {
return decompressToVRAM(dest, string, type);
}
#else
unsigned int copyFile(void *dest, char *string, enum FileType type) {
FILE *fp;
int size;
fp = openFile(string, type);
if (!fp)
return 0;
fseek(fp, 0, SEEK_END);
size = ftell(fp);
rewind(fp);
fread(dest, size, 1, fp);
closeFile(fp);
return size;
}
unsigned int copyFileVRAM(uint16 *dest, char *string, enum FileType type) {
FILE *fp;
int size;
int i;
uint16 *buff;
fp = openFile(string, type);
if (!fp)
return 0;
fseek(fp, 0, SEEK_END);
size = ftell(fp);
rewind(fp);
buff = (uint16*) malloc(size);
if (!buff)
error("Failed to dynamically allocate space", string);
fread(buff, size, 1, fp);
for (i=0; i<(size>>1); i++) {
dest[i] = buff[i];
}
closeFile(fp);
free(buff);
return size;
}
#endif
#define SRAM_WAIT_18 0x03
void initFileIO() {
if (!isDSiMode()) {
// these two are to make sure GH grip can be used when inserted
REG_EXMEMCNT &= ~0x0880;
REG_EXMEMCNT |= SRAM_WAIT_18;
}
// initialize NitroFS, in combination with FAT
if (!( __system_argv->argvMagic == ARGV_MAGIC && __system_argv->argc >= 1 )) {
// attempt default .nds location by setting it in argv
__system_argv->argvMagic = ARGV_MAGIC;
__system_argv->argc = 1;
__system_argv->argv[0] = malloc(strlen(DEFAULT_LOCATION_NDS)+1);
strcpy(__system_argv->argv[0], DEFAULT_LOCATION_NDS);
}
if (!nitroFSInit(NULL))
error("Initializing file access failed.",
"Please start the .nds file by "
"using a launcher such as "
"github.com/devkitPro/nds-hb-menu\n");
DIR* dir = opendir(FS_ROOT_FAT);
useFAToverNitroFS = dir ? true : false;
if (dir)
closedir(dir);
}
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