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A5200DS/arm9/source/a5200utils.c
wavemotion-dave 78aa986e19 V2.8 : 20-Mar-2021 by wavemotion-dave 
* A fresh coat of paint for the logo and file selection.
  * A few minor bugs fixed and cleanup as time permitted.
2021-03-20 10:08:45 -04:00

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#include <nds.h>
#include <nds/fifomessages.h>
#include <stdio.h>
#include <fat.h>
#include <dirent.h>
#include <unistd.h>
#include "main.h"
#include "a5200utils.h"
#include "atari.h"
#include "global.h"
#include "cartridge.h"
#include "input.h"
#include "emu/pia.h"
#include "clickNoQuit_wav.h"
#include "bgBottom.h"
#include "bgTop.h"
#include "bgFileSel.h"
#include "bgCardSel.h"
#include "altirra_5200_os.h"
FICA5200 a5200romlist[1024];
unsigned int counta5200=0, countfiles=0, ucFicAct=0;
int gTotalAtariFrames = 0;
int bg0, bg1, bg0b, bg1b, bg2, bg3;
unsigned int etatEmu;
int atari_frames=0;
int frame_skip = TRUE;
gamecfg GameConf; // Game Config svg
#define cxBG (myCart.offset_x<<8)
#define cyBG (myCart.offset_y<<8)
#define xdxBG (((320 / myCart.scale_x) << 8) | (320 % myCart.scale_x))
#define ydyBG (((256 / myCart.scale_y) << 8) | (256 % myCart.scale_y))
unsigned int atari_pal16[256] = {0};
unsigned char *filebuffer;
unsigned char sound_buffer[SNDLENGTH];
unsigned char *psound_buffer;
#define MAX_DEBUG 5
int debug[MAX_DEBUG]={0};
//#define DEBUG_DUMP
static void DumpDebugData(void)
{
#ifdef DEBUG_DUMP
char dbgbuf[32];
for (int i=0; i<MAX_DEBUG; i++)
{
int idx=0;
int val = debug[i];
if (val < 0)
{
dbgbuf[idx++] = '-';
val = val * -1;
}
else
{
dbgbuf[idx++] = '0' + (int)val/10000000;
}
val = val % 10000000;
dbgbuf[idx++] = '0' + (int)val/1000000;
val = val % 1000000;
dbgbuf[idx++] = '0' + (int)val/100000;
val = val % 100000;
dbgbuf[idx++] = '0' + (int)val/10000;
val = val % 10000;
dbgbuf[idx++] = '0' + (int)val/1000;
val= val % 1000;
dbgbuf[idx++] = '0' + (int)val/100;
val = val % 100;
dbgbuf[idx++] = '0' + (int)val/10;
dbgbuf[idx++] = '0' + (int)val%10;
dbgbuf[idx++] = 0;
dsPrintValue(0,3+i,0, dbgbuf);
}
#endif
}
void VsoundHandler(void)
{
static unsigned int sound_idx = 0;
extern unsigned char pokey_buffer[];
extern int pokeyBufIdx;
static int myPokeyBufIdx=0;
static unsigned char lastSample = 0;
// If there is a fresh sample...
if (myPokeyBufIdx != pokeyBufIdx)
{
lastSample = pokey_buffer[myPokeyBufIdx];
myPokeyBufIdx = (myPokeyBufIdx+1) & (SNDLENGTH-1);
}
sound_buffer[sound_idx] = lastSample;
sound_idx = (sound_idx+1) & (SNDLENGTH-1);
}
// Color fading effect
void FadeToColor(unsigned char ucSens, unsigned short ucBG, unsigned char ucScr, unsigned char valEnd, unsigned char uWait) {
unsigned short ucFade;
unsigned char ucBcl;
// Fade-out vers le noir
if (ucScr & 0x01) REG_BLDCNT=ucBG;
if (ucScr & 0x02) REG_BLDCNT_SUB=ucBG;
if (ucSens == 1) {
for(ucFade=0;ucFade<valEnd;ucFade++) {
if (ucScr & 0x01) REG_BLDY=ucFade;
if (ucScr & 0x02) REG_BLDY_SUB=ucFade;
for (ucBcl=0;ucBcl<uWait;ucBcl++) {
swiWaitForVBlank();
}
}
}
else {
for(ucFade=16;ucFade>valEnd;ucFade--) {
if (ucScr & 0x01) REG_BLDY=ucFade;
if (ucScr & 0x02) REG_BLDY_SUB=ucFade;
for (ucBcl=0;ucBcl<uWait;ucBcl++) {
swiWaitForVBlank();
}
}
}
}
void vblankIntr()
{
static int sIndex = 0;
static const u8 jitter[] =
{
0x00, 0x33,
0x88, 0x44
};
REG_BG2PA = xdxBG;
REG_BG2PD = ydyBG;
REG_BG2X = cxBG+jitter[sIndex++];
REG_BG2Y = cyBG+jitter[sIndex++];
sIndex = sIndex & 3;
}
void dsInitScreenMain(void)
{
// Init vbl and hbl func
SetYtrigger(190); //trigger 2 lines before vsync
irqSet(IRQ_VBLANK, vblankIntr);
irqEnable(IRQ_VBLANK | IRQ_VCOUNT);
vramSetBankB(VRAM_B_MAIN_BG_0x06020000 ); // Not sure what to use this for yet... 128k
vramSetBankD(VRAM_D_MAIN_BG_0x06040000 ); // Not using this for video but for cartridge bank swap area... it's faster!
vramSetBankE(VRAM_E_LCD ); // Not using this for video but 64K of faster RAM always useful! Mapped at 0x06880000
}
void dsInitTimer(void)
{
TIMER0_DATA=0;
TIMER0_CR=TIMER_ENABLE|TIMER_DIV_1024;
}
void dsShowScreenEmu(void)
{
// Change vram
videoSetMode(MODE_5_2D | DISPLAY_BG2_ACTIVE);
vramSetBankA(VRAM_A_MAIN_BG_0x06000000);
bg2 = bgInit(2, BgType_Bmp8, BgSize_B8_512x512, 0,0);
REG_BG2PB = 0;
REG_BG2PC = 0;
REG_BG2X = cxBG;
REG_BG2Y = cyBG;
REG_BG2PA = xdxBG;
REG_BG2PD = ydyBG;
}
void dsShowScreenMain(void) {
// Init BG mode for 16 bits colors
videoSetMode(MODE_0_2D | DISPLAY_BG0_ACTIVE );
videoSetModeSub(MODE_0_2D | DISPLAY_BG0_ACTIVE | DISPLAY_BG1_ACTIVE);
vramSetBankA(VRAM_A_MAIN_BG); vramSetBankC(VRAM_C_SUB_BG);
bg0 = bgInit(0, BgType_Text8bpp, BgSize_T_256x256, 31,0);
bg0b = bgInitSub(0, BgType_Text8bpp, BgSize_T_256x256, 31,0);
bg1b = bgInitSub(1, BgType_Text8bpp, BgSize_T_256x256, 30,0);
bgSetPriority(bg0b,1);bgSetPriority(bg1b,0);
decompress(bgTopTiles, bgGetGfxPtr(bg0), LZ77Vram);
decompress(bgTopMap, (void*) bgGetMapPtr(bg0), LZ77Vram);
dmaCopy((void *) bgTopPal,(u16*) BG_PALETTE,256*2);
decompress(bgBottomTiles, bgGetGfxPtr(bg0b), LZ77Vram);
decompress(bgBottomMap, (void*) bgGetMapPtr(bg0b), LZ77Vram);
dmaCopy((void *) bgBottomPal,(u16*) BG_PALETTE_SUB,256*2);
unsigned short dmaVal = *(bgGetMapPtr(bg1b) +31*32);
dmaFillWords(dmaVal | (dmaVal<<16),(void*) bgGetMapPtr(bg1b),32*24*2);
REG_BLDCNT=0; REG_BLDCNT_SUB=0; REG_BLDY=0; REG_BLDY_SUB=0;
swiWaitForVBlank();
}
void dsFreeEmu(void) {
// Stop timer of sound
TIMER2_CR=0; irqDisable(IRQ_TIMER2);
}
#define PALETTE_SIZE 768
byte palette_data[PALETTE_SIZE] = {
0x00,0x00,0x00,0x25,0x25,0x25,0x34,0x34,0x34,0x4F,0x4F,0x4F,
0x5B,0x5B,0x5B,0x69,0x69,0x69,0x7B,0x7B,0x7B,0x8A,0x8A,0x8A,
0xA7,0xA7,0xA7,0xB9,0xB9,0xB9,0xC5,0xC5,0xC5,0xD0,0xD0,0xD0,
0xD7,0xD7,0xD7,0xE1,0xE1,0xE1,0xF4,0xF4,0xF4,0xFF,0xFF,0xFF,
0x4C,0x32,0x00,0x62,0x3A,0x00,0x7B,0x4A,0x00,0x9A,0x60,0x00,
0xB5,0x74,0x00,0xCC,0x85,0x00,0xE7,0x9E,0x08,0xF7,0xAF,0x10,
0xFF,0xC3,0x18,0xFF,0xD0,0x20,0xFF,0xD8,0x28,0xFF,0xDF,0x30,
0xFF,0xE6,0x3B,0xFF,0xF4,0x40,0xFF,0xFA,0x4B,0xFF,0xFF,0x50,
0x99,0x25,0x00,0xAA,0x25,0x00,0xB4,0x25,0x00,0xD3,0x30,0x00,
0xDD,0x48,0x02,0xE2,0x50,0x09,0xF4,0x67,0x00,0xF4,0x75,0x10,
0xFF,0x9E,0x10,0xFF,0xAC,0x20,0xFF,0xBA,0x3A,0xFF,0xBF,0x50,
0xFF,0xC6,0x6D,0xFF,0xD5,0x80,0xFF,0xE4,0x90,0xFF,0xE6,0x99,
0x98,0x0C,0x0C,0x99,0x0C,0x0C,0xC2,0x13,0x00,0xD3,0x13,0x00,
0xE2,0x35,0x00,0xE3,0x40,0x00,0xE4,0x40,0x20,0xE5,0x52,0x30,
0xFD,0x78,0x54,0xFF,0x8A,0x6A,0xFF,0x98,0x7C,0xFF,0xA4,0x8B,
0xFF,0xB3,0x9E,0xFF,0xC2,0xB2,0xFF,0xD0,0xBA,0xFF,0xD7,0xC0,
0x99,0x00,0x00,0xA9,0x00,0x00,0xC2,0x04,0x00,0xD3,0x04,0x00,
0xDA,0x04,0x00,0xDB,0x08,0x00,0xE4,0x20,0x20,0xF6,0x40,0x40,
0xFB,0x70,0x70,0xFB,0x7E,0x7E,0xFB,0x8F,0x8F,0xFF,0x9F,0x9F,
0xFF,0xAB,0xAB,0xFF,0xB9,0xB9,0xFF,0xC9,0xC9,0xFF,0xCF,0xCF,
0x7E,0x00,0x50,0x80,0x00,0x50,0x80,0x00,0x5F,0x95,0x0B,0x74,
0xAA,0x22,0x88,0xBB,0x2F,0x9A,0xCE,0x3F,0xAD,0xD7,0x5A,0xB6,
0xE4,0x67,0xC3,0xEF,0x72,0xCE,0xFB,0x7E,0xDA,0xFF,0x8D,0xE1,
0xFF,0x9D,0xE5,0xFF,0xA5,0xE7,0xFF,0xAF,0xEA,0xFF,0xB8,0xEC,
0x48,0x00,0x6C,0x5C,0x04,0x88,0x65,0x0D,0x90,0x7B,0x23,0xA7,
0x93,0x3B,0xBF,0x9D,0x45,0xC9,0xA7,0x4F,0xD3,0xB2,0x5A,0xDE,
0xBD,0x65,0xE9,0xC5,0x6D,0xF1,0xCE,0x76,0xFA,0xD5,0x83,0xFF,
0xDA,0x90,0xFF,0xDE,0x9C,0xFF,0xE2,0xA9,0xFF,0xE6,0xB6,0xFF,
0x1B,0x00,0x70,0x22,0x1B,0x8D,0x37,0x30,0xA2,0x48,0x41,0xB3,
0x59,0x52,0xC4,0x63,0x5C,0xCE,0x6F,0x68,0xDA,0x7D,0x76,0xE8,
0x87,0x80,0xF8,0x93,0x8C,0xFF,0x9D,0x97,0xFF,0xA8,0xA3,0xFF,
0xB3,0xAF,0xFF,0xBC,0xB8,0xFF,0xC4,0xC1,0xFF,0xDA,0xD1,0xFF,
0x00,0x0D,0x7F,0x00,0x12,0xA7,0x00,0x18,0xC0,0x0A,0x2B,0xD1,
0x1B,0x4A,0xE3,0x2F,0x58,0xF0,0x37,0x68,0xFF,0x49,0x79,0xFF,
0x5B,0x85,0xFF,0x6D,0x96,0xFF,0x7F,0xA3,0xFF,0x8C,0xAD,0xFF,
0x96,0xB4,0xFF,0xA8,0xC0,0xFF,0xB7,0xCB,0xFF,0xC6,0xD6,0xFF,
0x00,0x29,0x5A,0x00,0x38,0x76,0x00,0x48,0x92,0x00,0x5C,0xAC,
0x00,0x71,0xC6,0x00,0x86,0xD0,0x0A,0x9B,0xDF,0x1A,0xA8,0xEC,
0x2B,0xB6,0xFF,0x3F,0xC2,0xFF,0x45,0xCB,0xFF,0x59,0xD3,0xFF,
0x7F,0xDA,0xFF,0x8F,0xDE,0xFF,0xA0,0xE2,0xFF,0xB0,0xEB,0xFF,
0x00,0x4A,0x00,0x00,0x4C,0x00,0x00,0x6A,0x20,0x50,0x8E,0x79,
0x40,0x99,0x99,0x00,0x9C,0xAA,0x00,0xA1,0xBB,0x01,0xA4,0xCC,
0x03,0xA5,0xD7,0x05,0xDA,0xE2,0x18,0xE5,0xFF,0x34,0xEA,0xFF,
0x49,0xEF,0xFF,0x66,0xF2,0xFF,0x84,0xF4,0xFF,0x9E,0xF9,0xFF,
0x00,0x4A,0x00,0x00,0x5D,0x00,0x00,0x70,0x00,0x00,0x83,0x00,
0x00,0x95,0x00,0x00,0xAB,0x00,0x07,0xBD,0x07,0x0A,0xD0,0x0A,
0x1A,0xD5,0x40,0x5A,0xF1,0x77,0x82,0xEF,0xA7,0x84,0xED,0xD1,
0x89,0xFF,0xED,0x7D,0xFF,0xFF,0x93,0xFF,0xFF,0x9B,0xFF,0xFF,
0x22,0x4A,0x03,0x27,0x53,0x04,0x30,0x64,0x05,0x3C,0x77,0x0C,
0x45,0x8C,0x11,0x5A,0xA5,0x13,0x1B,0xD2,0x09,0x1F,0xDD,0x00,
0x3D,0xCD,0x2D,0x3D,0xCD,0x30,0x58,0xCC,0x40,0x60,0xD3,0x50,
0xA2,0xEC,0x55,0xB3,0xF2,0x4A,0xBB,0xF6,0x5D,0xC4,0xF8,0x70,
0x2E,0x3F,0x0C,0x36,0x4A,0x0F,0x40,0x56,0x15,0x46,0x5F,0x17,
0x57,0x77,0x1A,0x65,0x85,0x1C,0x74,0x93,0x1D,0x8F,0xA5,0x25,
0xAD,0xB7,0x2C,0xBC,0xC7,0x30,0xC9,0xD5,0x33,0xD4,0xE0,0x3B,
0xE0,0xEC,0x42,0xEA,0xF6,0x45,0xF0,0xFD,0x47,0xF4,0xFF,0x6F,
0x55,0x24,0x00,0x5A,0x2C,0x00,0x6C,0x3B,0x00,0x79,0x4B,0x00,
0xB9,0x75,0x00,0xBB,0x85,0x00,0xC1,0xA1,0x20,0xD0,0xB0,0x2F,
0xDE,0xBE,0x3F,0xE6,0xC6,0x45,0xED,0xCD,0x57,0xF5,0xDB,0x62,
0xFB,0xE5,0x69,0xFC,0xEE,0x6F,0xFD,0xF3,0x77,0xFD,0xF3,0x7F,
0x5C,0x27,0x00,0x5C,0x2F,0x00,0x71,0x3B,0x00,0x7B,0x48,0x00,
0xB9,0x68,0x20,0xBB,0x72,0x20,0xC5,0x86,0x29,0xD7,0x96,0x33,
0xE6,0xA4,0x40,0xF4,0xB1,0x4B,0xFD,0xC1,0x58,0xFF,0xCC,0x55,
0xFF,0xD4,0x61,0xFF,0xDD,0x69,0xFF,0xE6,0x79,0xFF,0xEA,0x98
};
int load_os(char *filename )
{
FILE *romfile = fopen(filename, "rb");
if (romfile == NULL)
{
memcpy(atari_os, ROM_altirra_5200_os, 0x800); // No 5200.rom found... use open source Altirra OS instead
}
else
{
fread(atari_os, 0x800, 1, romfile);
fclose(romfile);
}
return 0;
} /* end load_os */
void dsLoadGame(char *filename)
{
unsigned int index;
// Free buffer if needed
TIMER2_CR=0; irqDisable(IRQ_TIMER2);
if (filebuffer != 0)
free(filebuffer);
// load card game if ok
if (Atari800_OpenFile(filename, true, 1, true) != AFILE_ERROR)
{
// Initialize the virtual console emulation
dsShowScreenEmu();
INPUT_Initialise();
memset(sound_buffer, 0x00, SNDLENGTH);
// Init palette
for(index = 0; index < 256; index++) {
unsigned short r = palette_data[(index * 3) + 0];
unsigned short g = palette_data[(index * 3) + 1];
unsigned short b = palette_data[(index * 3) + 2];
BG_PALETTE[index] = RGB8(r, g, b);
atari_pal16[index] = index;
}
psound_buffer=sound_buffer;
TIMER2_DATA = TIMER_FREQ(SOUND_FREQ);
TIMER2_CR = TIMER_DIV_1 | TIMER_IRQ_REQ | TIMER_ENABLE;
irqSet(IRQ_TIMER2, VsoundHandler);
TIMER0_CR=0;
TIMER0_DATA=0;
TIMER0_CR=TIMER_ENABLE|TIMER_DIV_1024;
atari_frames=0;
}
else dsPrintValue(0,2,0, "UNABLE TO FIND GAME!!");
}
unsigned int dsReadPad(void) {
unsigned int keys_pressed, ret_keys_pressed;
do {
keys_pressed = keysCurrent();
} while ((keys_pressed & (KEY_LEFT | KEY_RIGHT | KEY_DOWN | KEY_UP | KEY_A | KEY_B | KEY_L | KEY_R))!=0);
do {
keys_pressed = keysCurrent();
} while ((keys_pressed & (KEY_LEFT | KEY_RIGHT | KEY_DOWN | KEY_UP | KEY_A | KEY_B | KEY_L | KEY_R))==0);
ret_keys_pressed = keys_pressed;
do {
keys_pressed = keysCurrent();
} while ((keys_pressed & (KEY_LEFT | KEY_RIGHT | KEY_DOWN | KEY_UP | KEY_A | KEY_B | KEY_L | KEY_R))!=0);
return ret_keys_pressed;
}
bool dsWaitOnQuit(void) {
bool bRet=false, bDone=false;
unsigned int keys_pressed;
unsigned int posdeb=0;
char szName[32];
decompress(bgFileSelTiles, bgGetGfxPtr(bg0b), LZ77Vram);
decompress(bgFileSelMap, (void*) bgGetMapPtr(bg0b), LZ77Vram);
dmaCopy((void *) bgFileSelPal,(u16*) BG_PALETTE_SUB,256*2);
unsigned short dmaVal = *(bgGetMapPtr(bg1b) +31*32);
dmaFillWords(dmaVal | (dmaVal<<16),(void*) bgGetMapPtr(bg1b),32*24*2);
strcpy(szName,"Quit A5200DS ?");
dsPrintValue(17,2,0,szName);
sprintf(szName,"%s","A TO CONFIRM, B TO GO BACK");
dsPrintValue(16-strlen(szName)/2,23,0,szName);
while(!bDone) {
strcpy(szName," YES ");
dsPrintValue(5,10+0,(posdeb == 0 ? 1 : 0),szName);
strcpy(szName," NO ");
dsPrintValue(5,14+1,(posdeb == 2 ? 1 : 0),szName);
swiWaitForVBlank();
// Check pad
keys_pressed=dsReadPad();
if (keys_pressed & KEY_UP) {
if (posdeb) posdeb-=2;
}
if (keys_pressed & KEY_DOWN) {
if (posdeb<1) posdeb+=2;
}
if (keys_pressed & KEY_A) {
bRet = (posdeb ? false : true);
bDone = true;
}
if (keys_pressed & KEY_B) {
bDone = true;
}
}
decompress(bgBottomTiles, bgGetGfxPtr(bg0b), LZ77Vram);
decompress(bgBottomMap, (void*) bgGetMapPtr(bg0b), LZ77Vram);
dmaCopy((void *) bgBottomPal,(u16*) BG_PALETTE_SUB,256*2);
dmaVal = *(bgGetMapPtr(bg1b) +31*32);
dmaFillWords(dmaVal | (dmaVal<<16),(void*) bgGetMapPtr(bg1b),32*24*2);
return bRet;
}
void dsDisplayFiles(unsigned int NoDebGame,u32 ucSel) {
unsigned int ucBcl,ucGame;
u8 maxLen;
char szName[256];
// Display all games if possible
unsigned short dmaVal = *(bgGetMapPtr(bg1b) +31*32);
dmaFillWords(dmaVal | (dmaVal<<16),(void*) (bgGetMapPtr(bg1b)),32*24*2);
countfiles ? sprintf(szName,"%04d/%04d GAMES",(int)(1+ucSel+NoDebGame),countfiles) : sprintf(szName,"%04d/%04d FOLDERS",(int)(1+ucSel+NoDebGame),counta5200);
dsPrintValue(2,1,0,szName);
dsPrintValue(31,5,0,(char *) (NoDebGame>0 ? "<" : " "));
dsPrintValue(31,22,0,(char *) (NoDebGame+14<counta5200 ? ">" : " "));
sprintf(szName,"%s","A TO SELECT A GAME, B TO GO BACK");
dsPrintValue(16-strlen(szName)/2,23,0,szName);
for (ucBcl=0;ucBcl<17; ucBcl++) {
ucGame= ucBcl+NoDebGame;
if (ucGame < counta5200) {
char szName2[256];
maxLen=strlen(a5200romlist[ucGame].filename);
strcpy(szName,a5200romlist[ucGame].filename);
if (maxLen>29) szName[29]='\0';
if (a5200romlist[ucGame].directory)
{
char szName3[36];
sprintf(szName3,"[%s]",szName);
sprintf(szName2,"%-29s",szName3);
dsPrintValue(0,5+ucBcl,(ucSel == ucBcl ? 1 : 0),szName2);
}
else
{
sprintf(szName2,"%-29s",strupr(szName));
dsPrintValue(1,5+ucBcl,(ucSel == ucBcl ? 1 : 0),szName2);
}
}
}
}
unsigned int dsWaitForRom(void)
{
bool bDone=false, bRet=false;
u32 ucHaut=0x00, ucBas=0x00,ucSHaut=0x00, ucSBas=0x00,romSelected= 0, firstRomDisplay=0,nbRomPerPage, uNbRSPage, uLenFic=0,ucFlip=0, ucFlop=0;
char szName[64];
decompress(bgFileSelTiles, bgGetGfxPtr(bg0b), LZ77Vram);
decompress(bgFileSelMap, (void*) bgGetMapPtr(bg0b), LZ77Vram);
dmaCopy((void *) bgFileSelPal,(u16*) BG_PALETTE_SUB,256*2);
unsigned short dmaVal = *(bgGetMapPtr(bg1b) +31*32);
dmaFillWords(dmaVal | (dmaVal<<16),(void*) bgGetMapPtr(bg1b),32*24*2);
nbRomPerPage = (counta5200>=17 ? 17 : counta5200);
uNbRSPage = (counta5200>=5 ? 5 : counta5200);
if (ucFicAct>counta5200-nbRomPerPage) {
firstRomDisplay=counta5200-nbRomPerPage;
romSelected=ucFicAct-counta5200+nbRomPerPage;
}
else {
firstRomDisplay=ucFicAct;
romSelected=0;
}
dsDisplayFiles(firstRomDisplay,romSelected);
while (!bDone) {
if (keysCurrent() & KEY_UP) {
if (!ucHaut) {
ucFicAct = (ucFicAct>0 ? ucFicAct-1 : counta5200-1);
if (romSelected>uNbRSPage) { romSelected -= 1; }
else {
if (firstRomDisplay>0) { firstRomDisplay -= 1; }
else {
if (romSelected>0) { romSelected -= 1; }
else {
firstRomDisplay=counta5200-nbRomPerPage;
romSelected=nbRomPerPage-1;
}
}
}
ucHaut=0x01;
dsDisplayFiles(firstRomDisplay,romSelected);
}
else {
ucHaut++;
if (ucHaut>10) ucHaut=0;
}
}
else {
ucHaut = 0;
}
if (keysCurrent() & KEY_DOWN) {
if (!ucBas) {
ucFicAct = (ucFicAct< counta5200-1 ? ucFicAct+1 : 0);
if (romSelected<uNbRSPage-1) { romSelected += 1; }
else {
if (firstRomDisplay<counta5200-nbRomPerPage) { firstRomDisplay += 1; }
else {
if (romSelected<nbRomPerPage-1) { romSelected += 1; }
else {
firstRomDisplay=0;
romSelected=0;
}
}
}
ucBas=0x01;
dsDisplayFiles(firstRomDisplay,romSelected);
}
else {
ucBas++;
if (ucBas>10) ucBas=0;
}
}
else {
ucBas = 0;
}
if ((keysCurrent() & KEY_R) || (keysCurrent() & KEY_RIGHT)) {
if (!ucSBas) {
ucFicAct = (ucFicAct< counta5200-nbRomPerPage ? ucFicAct+nbRomPerPage : counta5200-nbRomPerPage);
if (firstRomDisplay<counta5200-nbRomPerPage) { firstRomDisplay += nbRomPerPage; }
else { firstRomDisplay = counta5200-nbRomPerPage; }
if (ucFicAct == counta5200-nbRomPerPage) romSelected = 0;
ucSBas=0x01;
dsDisplayFiles(firstRomDisplay,romSelected);
}
else {
ucSBas++;
if (ucSBas>10) ucSBas=0;
}
}
else {
ucSBas = 0;
}
if ((keysCurrent() & KEY_L) || (keysCurrent() & KEY_LEFT)) {
if (!ucSHaut) {
ucFicAct = (ucFicAct> nbRomPerPage ? ucFicAct-nbRomPerPage : 0);
if (firstRomDisplay>nbRomPerPage) { firstRomDisplay -= nbRomPerPage; }
else { firstRomDisplay = 0; }
if (ucFicAct == 0) romSelected = 0;
ucSHaut=0x01;
dsDisplayFiles(firstRomDisplay,romSelected);
}
else {
ucSHaut++;
if (ucSHaut>10) ucSHaut=0;
}
}
else {
ucSHaut = 0;
}
if ( keysCurrent() & KEY_B ) {
bDone=true;
while (keysCurrent() & KEY_B);
}
if (keysCurrent() & KEY_A) {
if (!a5200romlist[ucFicAct].directory) {
bRet=true;
bDone=true;
}
else {
chdir(a5200romlist[ucFicAct].filename);
a52FindFiles();
ucFicAct = 0;
nbRomPerPage = (counta5200>=16 ? 16 : counta5200);
uNbRSPage = (counta5200>=5 ? 5 : counta5200);
if (ucFicAct>counta5200-nbRomPerPage) {
firstRomDisplay=counta5200-nbRomPerPage;
romSelected=ucFicAct-counta5200+nbRomPerPage;
}
else {
firstRomDisplay=ucFicAct;
romSelected=0;
}
dsDisplayFiles(firstRomDisplay,romSelected);
while (keysCurrent() & KEY_A);
}
}
// Scroll la selection courante
if (strlen(a5200romlist[ucFicAct].filename) > 29) {
ucFlip++;
if (ucFlip >= 8) {
ucFlip = 0;
uLenFic++;
if ((uLenFic+29)>strlen(a5200romlist[ucFicAct].filename)) {
ucFlop++;
if (ucFlop >= 8) {
uLenFic=0;
ucFlop = 0;
}
else
uLenFic--;
}
strncpy(szName,a5200romlist[ucFicAct].filename+uLenFic,29);
szName[29] = '\0';
dsPrintValue(1,5+romSelected,1,szName);
}
}
swiWaitForVBlank();
}
decompress(bgBottomTiles, bgGetGfxPtr(bg0b), LZ77Vram);
decompress(bgBottomMap, (void*) bgGetMapPtr(bg0b), LZ77Vram);
dmaCopy((void *) bgBottomPal,(u16*) BG_PALETTE_SUB,256*2);
dmaVal = *(bgGetMapPtr(bg1b) +31*32);
dmaFillWords(dmaVal | (dmaVal<<16),(void*) bgGetMapPtr(bg1b),32*24*2);
return bRet;
}
unsigned int dsWaitOnMenu(unsigned int actState) {
unsigned int uState=A5200_PLAYINIT;
unsigned int keys_pressed;
bool bDone=false, romSel;
int iTx,iTy;
while (!bDone) {
// wait for stylus
keys_pressed = keysCurrent();
if (keys_pressed & KEY_TOUCH) {
touchPosition touch;
touchRead(&touch);
iTx = touch.px;
iTy = touch.py;
if ((iTx>206) && (iTx<250) && (iTy>110) && (iTy<129)) { // 207,111 -> 249,128 quit
soundPlaySample(clickNoQuit_wav, SoundFormat_16Bit, clickNoQuit_wav_size, 22050, 127, 64, false, 0);
bDone=dsWaitOnQuit();
if (bDone) uState=A5200_QUITSTDS;
}
if ((iTx>71) && (iTx<183) && (iTy>7) && (iTy<43)) { // 72,8 -> 182,42 cartridge slot
bDone=true;
// Find files in current directory and show it
a52FindFiles();
romSel=dsWaitForRom();
if (romSel) { uState=A5200_PLAYINIT;
dsLoadGame(a5200romlist[ucFicAct].filename); }
else { uState=actState; }
}
}
swiWaitForVBlank();
}
return uState;
}
void dsPrintValue(int x, int y, unsigned int isSelect, char *pchStr)
{
u16 *pusEcran,*pusMap;
u16 usCharac;
char *pTrTxt=pchStr;
char ch;
pusEcran=(u16*) (bgGetMapPtr(bg1b))+x+(y<<5);
pusMap=(u16*) (bgGetMapPtr(bg0b)+(2*isSelect+24)*32);
while((*pTrTxt)!='\0' )
{
ch = *pTrTxt;
if (ch >= 'a' && ch <= 'z') ch -= 32; // Faster than strcpy/strtoupper
usCharac=0x0000;
if ((ch) == '|')
usCharac=*(pusMap);
else if (((ch)<' ') || ((ch)>'_'))
usCharac=*(pusMap);
else if((ch)<'@')
usCharac=*(pusMap+(ch)-' ');
else
usCharac=*(pusMap+32+(ch)-'@');
*pusEcran++=usCharac;
pTrTxt++;
}
}
//---------------------------------------------------------------------------------
void dsInstallSoundEmuFIFO(void)
{
FifoMessage msg;
msg.SoundPlay.data = &sound_buffer;
msg.SoundPlay.freq = SOUND_FREQ;
msg.SoundPlay.volume = 127;
msg.SoundPlay.pan = 64;
msg.SoundPlay.loop = 1;
msg.SoundPlay.format = ((1)<<4) | SoundFormat_8Bit;
msg.SoundPlay.loopPoint = 0;
msg.SoundPlay.dataSize = SNDLENGTH >> 2;
msg.type = EMUARM7_PLAY_SND;
fifoSendDatamsg(FIFO_USER_01, sizeof(msg), (u8*)&msg);
}
extern u32 trig0, trig1;
extern u32 stick0;
extern u32 stick1;
int full_speed = 0;
void dsMainLoop(void) {
char fpsbuf[32];
unsigned int keys_pressed,keys_touch=0, romSel;
int iTx,iTy, shiftctrl;
bool showFps=false;
// Timers are fed with 33.513982 MHz clock.
// With DIV_1024 the clock is 32,728.5 ticks per sec...
TIMER0_DATA=0;
TIMER0_CR=TIMER_ENABLE|TIMER_DIV_1024;
TIMER1_DATA=0;
TIMER1_CR=TIMER_ENABLE | TIMER_DIV_1024;
while(etatEmu != A5200_QUITSTDS) {
switch (etatEmu) {
case A5200_MENUINIT:
dsShowScreenMain();
etatEmu = A5200_MENUSHOW;
break;
case A5200_MENUSHOW:
etatEmu = dsWaitOnMenu(A5200_MENUSHOW);
Atari800_Initialise();
break;
case A5200_PLAYINIT:
dsShowScreenEmu();
irqEnable(IRQ_TIMER2);
etatEmu = A5200_PLAYGAME;
break;
case A5200_PLAYGAME:
// 32,728.5 ticks = 1 second
// 1 frame = 1/50 or 1/60 (0.02 or 0.016)
// 655 -> 50 fps and 546 -> 60 fps
if (!full_speed)
{
while(TIMER0_DATA < (546*atari_frames))
;
}
// Execute one frame
Atari800_Frame();
if (++atari_frames == 60)
{
TIMER0_CR=0;
TIMER0_DATA=0;
TIMER0_CR=TIMER_ENABLE|TIMER_DIV_1024;
atari_frames=0;
}
// -------------------------------------------------------------
// Stuff to do once/second such as FPS display and Debug Data
// -------------------------------------------------------------
if (TIMER1_DATA >= 32728) // 1000MS (1 sec)
{
TIMER1_CR = 0;
TIMER1_DATA = 0;
TIMER1_CR=TIMER_ENABLE | TIMER_DIV_1024;
if (showFps) { siprintf(fpsbuf,"%03d",gTotalAtariFrames); dsPrintValue(0,0,0, fpsbuf); } // Show FPS
DumpDebugData();
gTotalAtariFrames = 0;
}
// Read keys
keys_pressed=keysCurrent();
key_consol = CONSOL_NONE; //|= (CONSOL_OPTION | CONSOL_SELECT | CONSOL_START); /* OPTION/START/SELECT key OFF */
shiftctrl = 0; key_shift = 0;
trig0 = ((keys_pressed & KEY_A) || (keys_pressed & KEY_Y)) ? 0 : 1;
stick0 = STICK_CENTRE;
stick1 = STICK_CENTRE;
if (keys_pressed & KEY_B) { shiftctrl ^= AKEY_SHFT; key_shift = 1; }
key_code = shiftctrl ? 0x40 : 0x00;
// if touch screen pressed
if (keys_pressed & KEY_TOUCH)
{
touchPosition touch;
touchRead(&touch);
iTx = touch.px;
iTy = touch.py;
if ((iTx>206) && (iTx<250) && (iTy>112) && (iTy<130)) { //quit
irqDisable(IRQ_TIMER2); fifoSendValue32(FIFO_USER_01,(1<<16) | (0) | SOUND_SET_VOLUME);
soundPlaySample(clickNoQuit_wav, SoundFormat_16Bit, clickNoQuit_wav_size, 22050, 127, 64, false, 0);
if (dsWaitOnQuit()) etatEmu=A5200_QUITSTDS;
else { irqEnable(IRQ_TIMER2); fifoSendValue32(FIFO_USER_01,(1<<16) | (127) | SOUND_SET_VOLUME); }
}
else if ((iTx>240) && (iTx<256) && (iTy>0) && (iTy<20)) { // Full Speed Toggle ... upper corner...
if (keys_touch == 0)
{
full_speed = 1-full_speed;
if (full_speed) dsPrintValue(30,0,0,"FS"); else dsPrintValue(30,0,0," ");
keys_touch = 1;
}
}
else if ((iTx>120) && (iTx<160) && (iTy>112) && (iTy<130)) { //pause
if (!keys_touch) soundPlaySample(clickNoQuit_wav, SoundFormat_16Bit, clickNoQuit_wav_size, 22050, 127, 64, false, 0);
key_code = AKEY_5200_PAUSE + key_code;
keys_touch = 1;
}
else if ((iTx>65) && (iTx<108) && (iTy>112) && (iTy<130)) { //reset
if (!keys_touch) soundPlaySample(clickNoQuit_wav, SoundFormat_16Bit, clickNoQuit_wav_size, 22050, 127, 64, false, 0);
key_code = AKEY_5200_RESET + key_code;
keys_touch = 1;
}
else if ((iTx>10) && (iTx<50) && (iTy>112) && (iTy<130)) { //start
if (!keys_touch) soundPlaySample(clickNoQuit_wav, SoundFormat_16Bit, clickNoQuit_wav_size, 22050, 127, 64, false, 0);
key_code = AKEY_5200_START + key_code;
keys_touch = 1;
}
else if ((iTy>155) && (iTy<185))
{
char padKey[] = {AKEY_5200_0,AKEY_5200_1,AKEY_5200_2,AKEY_5200_3,AKEY_5200_4,AKEY_5200_5,AKEY_5200_6,AKEY_5200_7,AKEY_5200_8,AKEY_5200_9,AKEY_5200_HASH,AKEY_5200_ASTERISK};
if (!keys_touch) soundPlaySample(clickNoQuit_wav, SoundFormat_16Bit, clickNoQuit_wav_size, 22050, 127, 64, false, 0);
if (iTx > 0) iTx--;
if (iTx > 0) iTx--;
key_code = padKey[iTx / 21] + key_code;
keys_touch = 1;
}
else if ((iTx>71) && (iTx<183) && (iTy>7) && (iTy<43)) { // 72,8 -> 182,42 cartridge slot
irqDisable(IRQ_TIMER2); fifoSendValue32(FIFO_USER_01,(1<<16) | (0) | SOUND_SET_VOLUME);
// Find files in current directory and show it
a52FindFiles();
romSel=dsWaitForRom();
if (romSel) { etatEmu=A5200_PLAYINIT; dsLoadGame(a5200romlist[ucFicAct].filename); if (full_speed) dsPrintValue(30,0,0,"FS"); else dsPrintValue(30,0,0," ");}
else { irqEnable(IRQ_TIMER2); }
fifoSendValue32(FIFO_USER_01,(1<<16) | (127) | SOUND_SET_VOLUME);
}
}
else
{
keys_touch = 0;
}
if (myCart.control == CTRL_JOY)
{
if (keys_pressed & KEY_UP) stick0 = STICK_FORWARD;
if (keys_pressed & KEY_LEFT) stick0 = STICK_LEFT;
if (keys_pressed & KEY_RIGHT) stick0 = STICK_RIGHT;
if (keys_pressed & KEY_DOWN) stick0 = STICK_BACK;
if ((keys_pressed & KEY_UP) && (keys_pressed & KEY_LEFT)) stick0 = STICK_UL;
if ((keys_pressed & KEY_UP) && (keys_pressed & KEY_RIGHT)) stick0 = STICK_UR;
if ((keys_pressed & KEY_DOWN) && (keys_pressed & KEY_LEFT)) stick0 = STICK_LL;
if ((keys_pressed & KEY_DOWN) && (keys_pressed & KEY_RIGHT)) stick0 = STICK_LR;
}
else if (myCart.control == CTRL_SWAP)
{
trig1 = (keys_pressed & KEY_A) ? 0 : 1;
if (keys_pressed & KEY_UP) stick1 = STICK_FORWARD;
if (keys_pressed & KEY_LEFT) stick1 = STICK_LEFT;
if (keys_pressed & KEY_RIGHT) stick1 = STICK_RIGHT;
if (keys_pressed & KEY_DOWN) stick1 = STICK_BACK;
if ((keys_pressed & KEY_UP) && (keys_pressed & KEY_LEFT)) stick1 = STICK_UL;
if ((keys_pressed & KEY_UP) && (keys_pressed & KEY_RIGHT)) stick1 = STICK_UR;
if ((keys_pressed & KEY_DOWN) && (keys_pressed & KEY_LEFT)) stick1 = STICK_LL;
if ((keys_pressed & KEY_DOWN) && (keys_pressed & KEY_RIGHT)) stick1 = STICK_LR;
}
else if (myCart.control == CTRL_ROBO)
{
if (keys_pressed & KEY_UP) stick0 = STICK_FORWARD;
if (keys_pressed & KEY_LEFT) stick0 = STICK_LEFT;
if (keys_pressed & KEY_RIGHT) stick0 = STICK_RIGHT;
if (keys_pressed & KEY_DOWN) stick0 = STICK_BACK;
if ((keys_pressed & KEY_UP) && (keys_pressed & KEY_LEFT)) stick0 = STICK_UL;
if ((keys_pressed & KEY_UP) && (keys_pressed & KEY_RIGHT)) stick0 = STICK_UR;
if ((keys_pressed & KEY_DOWN) && (keys_pressed & KEY_LEFT)) stick0 = STICK_LL;
if ((keys_pressed & KEY_DOWN) && (keys_pressed & KEY_RIGHT)) stick0 = STICK_LR;
if (keys_pressed & KEY_X) stick1 = STICK_FORWARD;
if (keys_pressed & KEY_Y) stick1 = STICK_LEFT;
if (keys_pressed & KEY_A) stick1 = STICK_RIGHT;
if (keys_pressed & KEY_B) stick1 = STICK_BACK;
if ((keys_pressed & KEY_X) && (keys_pressed & KEY_Y)) stick1 = STICK_UL;
if ((keys_pressed & KEY_X) && (keys_pressed & KEY_A)) stick1 = STICK_UR;
if ((keys_pressed & KEY_B) && (keys_pressed & KEY_Y)) stick1 = STICK_LL;
if ((keys_pressed & KEY_B) && (keys_pressed & KEY_A)) stick1 = STICK_LR;
}
else if (myCart.control == CTRL_FROG)
{
trig0=0;
if (keys_pressed & KEY_UP) {stick0 = STICK_FORWARD; trig0=1;}
if (keys_pressed & KEY_LEFT) {stick0 = STICK_LEFT; trig0=1;}
if (keys_pressed & KEY_RIGHT) {stick0 = STICK_RIGHT;trig0=1;}
if (keys_pressed & KEY_DOWN) {stick0 = STICK_BACK; trig0=1;}
}
else if (myCart.control == CTRL_QBERT)
{
if (keys_pressed & KEY_UP) {stick0 = STICK_UR; }
if (keys_pressed & KEY_LEFT) {stick0 = STICK_UL;}
if (keys_pressed & KEY_RIGHT) {stick0 = STICK_LR;}
if (keys_pressed & KEY_DOWN) {stick0 = STICK_LL; }
trig0=0;
}
if (keys_pressed & KEY_START) key_code = AKEY_5200_START + key_code;
if (keys_pressed & KEY_SELECT) key_code = AKEY_5200_PAUSE + key_code;
if (gTotalAtariFrames & 1) // Every other frame...
{
if ((keys_pressed & KEY_R) && (keys_pressed & KEY_UP)) myCart.offset_y++;
if ((keys_pressed & KEY_R) && (keys_pressed & KEY_DOWN)) myCart.offset_y--;
if ((keys_pressed & KEY_R) && (keys_pressed & KEY_LEFT)) myCart.offset_x++;
if ((keys_pressed & KEY_R) && (keys_pressed & KEY_RIGHT)) myCart.offset_x--;
if ((keys_pressed & KEY_L) && (keys_pressed & KEY_UP)) if (myCart.scale_y <= 256) myCart.scale_y++;
if ((keys_pressed & KEY_L) && (keys_pressed & KEY_DOWN)) if (myCart.scale_y >= 192) myCart.scale_y--;
if ((keys_pressed & KEY_L) && (keys_pressed & KEY_RIGHT)) if (myCart.scale_x <= 320) myCart.scale_x++;
if ((keys_pressed & KEY_L) && (keys_pressed & KEY_LEFT)) if (myCart.scale_x >= 192) myCart.scale_x--;
}
static int last_keys = 99;
if (keys_pressed != last_keys)
{
last_keys = keys_pressed;
if (myCart.control != CTRL_ROBO)
{
if (keys_pressed & KEY_X) {showFps = 1-showFps;dsPrintValue(0,0,0, " ");}
}
}
break;
}
}
}
//----------------------------------------------------------------------------------
// Find files (a78 / bin) available
int a52Filescmp (const void *c1, const void *c2) {
FICA5200 *p1 = (FICA5200 *) c1;
FICA5200 *p2 = (FICA5200 *) c2;
if (p1->filename[0] == '.' && p2->filename[0] != '.')
return -1;
if (p2->filename[0] == '.' && p1->filename[0] != '.')
return 1;
if (p1->directory && !(p2->directory))
return -1;
if (p2->directory && !(p1->directory))
return 1;
return strcasecmp (p1->filename, p2->filename);
}
void a52FindFiles(void) {
DIR *pdir;
struct dirent *pent;
char filenametmp[255];
counta5200 = countfiles= 0;
pdir = opendir(".");
if (pdir) {
while (((pent=readdir(pdir))!=NULL))
{
strcpy(filenametmp,pent->d_name);
if (pent->d_type == DT_DIR)
{
if (!( (filenametmp[0] == '.') && (strlen(filenametmp) == 1))) {
a5200romlist[counta5200].directory = true;
strcpy(a5200romlist[counta5200].filename,filenametmp);
counta5200++;
}
}
else {
if (strlen(filenametmp)>4) {
if ( (strcasecmp(strrchr(filenametmp, '.'), ".a52") == 0) ) {
a5200romlist[counta5200].directory = false;
strcpy(a5200romlist[counta5200].filename,filenametmp);
counta5200++;countfiles++;
}
if ( (strcasecmp(strrchr(filenametmp, '.'), ".bin") == 0) ) {
a5200romlist[counta5200].directory = false;
strcpy(a5200romlist[counta5200].filename,filenametmp);
counta5200++;countfiles++;
}
}
}
}
closedir(pdir);
}
if (counta5200)
{
qsort (a5200romlist, counta5200, sizeof (FICA5200), a52Filescmp);
}
else // Failsafe... always provide a back directory...
{
a5200romlist[counta5200].directory = true;
strcpy(a5200romlist[counta5200].filename,"..");
counta5200 = 1;
}
}
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