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frodo-wii/Src/C64_SDL.h

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/*
* C64_x.i - Put the pieces together, X specific stuff
*
* Frodo (C) 1994-1997,2002 Christian Bauer
* Unix stuff by Bernd Schmidt/Lutz Vieweg
*/
#include "main.h"
#include <sys/types.h>
#include <dirent.h>
#if defined(GEKKO)
#include <wiiuse/wpad.h>
#include <ogc/lwp_watchdog.h>
#define FONT_PATH "/apps/frodo/FreeMono.ttf"
#define SAVES_PATH "/apps/frodo/saves"
#define IMAGE_PATH "/apps/frodo/images"
#define TMP_PATH "/apps/frodo/tmp"
#else
#define FONT_PATH "FreeMono.ttf"
#define SAVES_PATH "saves"
#define IMAGE_PATH "images"
#define TMP_PATH "tmp"
#endif
/* TODO: */
extern char *fixme_tmp_network_client;
extern int fixme_tmp_network_server;
static struct timeval tv_start;
static const char *main_menu_messages[] = {
"Invoke key sequence", /* 0 */
"Insert disc or tape", /* 1 */
"Reset C64", /* 2 */
"Bind key to joystick",/* 3 */
"Other options", /* 4 */
"Controller 1 joystick port", /* 5 */
"^|1|2",
"Save/Load state", /* 7 */
" ",
"Quit", /* 9 */
NULL,
};
static const char *save_load_state_messages[] = {
"Load saved state", /* 0 */
"Save current state", /* 1 */
"Delete state", /* 2 */
NULL,
};
/*
* Constructor, system-dependent things
*/
void C64::c64_ctor1(void)
{
// Initialize joystick variables
#ifdef HAVE_LINUX_JOYSTICK_H
joyfd[0] = joyfd[1] = -1;
joy_minx = joy_miny = 32767;
joy_maxx = joy_maxy = -32768;
#endif
this->fake_key_sequence = false;
this->fake_key_index = 0;
this->fake_key_keytime = 4;
this->fake_key_str = "\nLOAD \"*\",8,1\nRUN\n";
this->prefs_changed = false;
memset(this->save_game_name, 0, sizeof(this->save_game_name));
strcpy(this->save_game_name, "unknown");
SDL_RWops *rw;
Uint8 *data = (Uint8*)malloc(1 * 1024*1024);
FILE *fp = fopen(FONT_PATH, "r");
if (!fp) {
fprintf(stderr, "Could not open font\n");
exit(1);
}
fread(data, 1, 1 * 1024 * 1024, fp);
rw = SDL_RWFromMem(data, 1 * 1024 * 1024);
if (!rw) {
fprintf(stderr, "Could not create RW: %s\n", SDL_GetError());
exit(1);
}
this->menu_font = TTF_OpenFontRW(rw, 1, 20);
if (!this->menu_font)
{
fprintf(stderr, "Unable to open font\n" );
exit(1);
}
this->virtual_keyboard = new VirtualKeyboard(real_screen, this->menu_font);
strncpy(this->server_hostname, "localhost",
sizeof(this->server_hostname));
this->server_port = 19760;
this->network_connection_type = NONE;
if (fixme_tmp_network_server) {
Network::StartListener(this->server_port);
this->network_connection_type = MASTER;
}
if (fixme_tmp_network_client)
{
strcpy(this->server_hostname, fixme_tmp_network_client);
Network::ConnectTo(this->server_hostname, this->server_port);
this->network_connection_type = CLIENT;
}
}
void C64::c64_ctor2(void)
{
gettimeofday(&tv_start, NULL);
}
/*
* Destructor, system-dependent things
*/
void C64::c64_dtor(void)
{
}
static int cmpstringp(const void *p1, const void *p2)
{
return strcmp(* (char * const *) p1, * (char * const *) p2);
}
/* Return true if name ends with ext (for filenames) */
static bool ext_matches(const char *name, const char *ext)
{
int len = strlen(name);
int ext_len = strlen(ext);
if (len <= ext_len)
return false;
return (strcmp(name + len - ext_len, ext) == 0);
}
static const char **get_file_list(const char *base_dir)
{
DIR *d = opendir(base_dir);
const char **file_list;
int cur = 0;
struct dirent *de;
int cnt = 16;
if (!d)
return NULL;
file_list = (const char**)malloc(cnt * sizeof(char*));
file_list[cur++] = strdup("None");
file_list[cur] = NULL;
for (de = readdir(d);
de;
de = readdir(d))
{
if (ext_matches(de->d_name, ".d64") || ext_matches(de->d_name, ".D64") ||
ext_matches(de->d_name, ".prg") || ext_matches(de->d_name, ".PRG") ||
ext_matches(de->d_name, ".p00") || ext_matches(de->d_name, ".P00") ||
ext_matches(de->d_name, ".s00") || ext_matches(de->d_name, ".S00") ||
ext_matches(de->d_name, ".t64") || ext_matches(de->d_name, ".T64") ||
ext_matches(de->d_name, ".sav"))
{
char *p;
p = strdup(de->d_name);
file_list[cur++] = p;
file_list[cur] = NULL;
if (cur > cnt - 2)
{
cnt = cnt + 32;
file_list = (const char**)realloc(file_list, cnt * sizeof(char*));
if (!file_list)
return NULL;
}
}
}
closedir(d);
qsort(&file_list[1], cur-1, sizeof(const char *), cmpstringp);
return file_list;
}
void C64::select_disc(Prefs *np)
{
const char **file_list = get_file_list(IMAGE_PATH);
if (file_list == NULL)
return;
int opt = menu_select(real_screen, this->menu_font,
file_list, NULL);
if (opt >= 0)
{
const char *name = file_list[opt];
if (strcmp(file_list[opt], "None") == 0)
{
strcpy(np->DrivePath[0], "\0");
strcpy(this->save_game_name, "unknown");
}
else
{
snprintf(np->DrivePath[0], 255, "%s/%s",
IMAGE_PATH, name);
strncpy(this->save_game_name, name, 255);
if (strstr(name, ".prg") || strstr(name, ".PRG") ||
strstr(name, ".p00") || strstr(name, ".P00") ||
strstr(name, ".s00") || strstr(name, ".S00")) {
FILE *src, *dst;
/* Clean temp dir first (we only want one file) */
unlink(TMP_PATH"/a");
src = fopen(np->DrivePath[0], "r");
if (src != NULL)
{
snprintf(np->DrivePath[0], 255, "%s", TMP_PATH);
/* Special handling of .prg: Copy to TMP_PATH and
* load that as a dir */
dst = fopen(TMP_PATH"/a", "w");
if (dst)
{
Uint8 buf[1024];
size_t v;
do {
v = fread(buf, 1, 1024, src);
fwrite(buf, 1, v, dst);
} while (v > 0);
fclose(dst);
}
fclose(src);
}
}
NewPrefs(np);
ThePrefs = *np;
}
this->prefs_changed = true;
}
/* Cleanup everything */
for ( int i = 0; file_list[i]; i++ )
free((void*)file_list[i]);
free(file_list);
}
char *C64::bind_one_key(Prefs *np, int which)
{
static const char *which_to_button_name[] = { "A", "B", "+", "-", "1",
"classic X", "classic Y", "classic B", "classic L",
"classic R", "classic ZR", "classic ZL" };
static char strs[N_WIIMOTE_BINDINGS][255];
char *out = strs[which];
int cur = np->JoystickKeyBinding[which];
snprintf(out, 255, "Bind to %s (now %s)", which_to_button_name[which],
this->virtual_keyboard->keycode_to_string(cur));
return out;
}
void C64::bind_keys(Prefs *np)
{
const char *bind_key_messages[N_WIIMOTE_BINDINGS + 1];
bool has_classic_controller = false;
#if defined(GEKKO)
WPADData *wpad, *wpad_other;
wpad = WPAD_Data(0);
wpad_other = WPAD_Data(1);
if (wpad->exp.type == WPAD_EXP_CLASSIC ||
wpad_other->exp.type == WPAD_EXP_CLASSIC)
has_classic_controller = true;
#endif
memset(bind_key_messages, 0, sizeof(const char*) * (N_WIIMOTE_BINDINGS + 1));
for (int i = 0; i < (has_classic_controller ? N_WIIMOTE_BINDINGS : 5); i++)
bind_key_messages[i] = this->bind_one_key(np, i);
int opt = menu_select(real_screen, this->menu_font,
bind_key_messages, NULL);
if (opt >= 0)
{
int key;
bool shifted;
key = this->virtual_keyboard->get_key();
/* -2 means abort */
if (key != np->JoystickKeyBinding[opt] && key != -2)
{
this->prefs_changed = true;
np->JoystickKeyBinding[opt] = key;
}
}
}
void C64::networking_menu(Prefs *np)
{
int opt;
do
{
char buf[2][255];
const char *network_client_messages[] = {
"Listen for connections",/* 0 */
buf[0], /* 1 */
buf[1], /* 2 */
"Connect to remote", /* 3 */
NULL,
};
snprintf(buf[0], 255, "Remote hostname (now %s)",
this->server_hostname);
snprintf(buf[1], 255, "Port (now %d)",
this->server_port);
opt = menu_select(real_screen, this->menu_font,
network_client_messages, NULL);
if (opt == 1 || opt == 2)
{
const char *m = this->virtual_keyboard->get_string();
if (m && opt == 1)
strncpy(this->server_hostname, m,
sizeof(this->server_hostname));
if (m && opt == 2)
this->server_port = atoi(m);
}
else if (opt == 0) {
Network::StartListener(this->server_port);
this->network_connection_type = MASTER;
}
else if (opt == 3) {
Network::ConnectTo(this->server_hostname, this->server_port);
this->network_connection_type = CLIENT;
}
} while (opt == 1 || opt == 2);
this->prefs_changed = true;
}
void C64::other_options(Prefs *np)
{
const char *other_options_messages[] = {
"Display resolution", /* 0 */
"^|double-center|stretched",
"Speed (approx)", /* 2 */
"^|95|100|110",
"Emulate 1541", /* 4 */
"^|On|Off",
"Networking", /* 6 */
NULL,
};
int submenus[3] = { np->DisplayOption, 0, !np->Emul1541Proc };
#define SPEED_95 33
#define SPEED_100 28
#define SPEED_110 25
switch (np->MsPerFrame)
{
case SPEED_95:
submenus[1] = 0; break;
case SPEED_110:
submenus[1] = 2; break;
default:
/* If it has some other value... */
submenus[1] = 1; break;
}
int opt = menu_select(real_screen, this->menu_font,
other_options_messages, submenus);
if (opt >= 0)
{
np->DisplayOption = submenus[0];
np->Emul1541Proc = submenus[2] == 0 ? true : false;
switch(submenus[1])
{
case 0:
np->MsPerFrame = SPEED_95; break;
case 1:
np->MsPerFrame = SPEED_100; break;
case 2:
default:
np->MsPerFrame = SPEED_110; break;
}
if (opt == 6)
this->networking_menu(np);
this->prefs_changed = true;
}
}
/* From dreamcast port but heavily modified */
void C64::run_fake_key_sequence()
{
int kc = this->virtual_keyboard->char_to_keycode(this->fake_key_str[this->fake_key_index]);
TheDisplay->FakeKeyPress(kc, TheCIA1->KeyMatrix, TheCIA1->RevMatrix);
this->fake_key_keytime --;
if (this->fake_key_keytime == 0)
{
this->fake_key_keytime = 4;
this->fake_key_index ++;
TheDisplay->FakeKeyPress(-1, TheCIA1->KeyMatrix, TheCIA1->RevMatrix);
if (this->fake_key_str[this->fake_key_index] == '\0')
{
this->fake_key_sequence = false;
this->fake_key_index = 0;
this->fake_key_keytime = 5;
}
}
}
void C64::start_fake_key_sequence(const char *str)
{
this->fake_key_str = str;
this->fake_key_sequence = true;
}
void C64::select_fake_key_sequence(Prefs *np)
{
static const char *fake_key_sequences[] = {
"\nLOAD \"*\",8,1\nRUN\n",
"\nLOAD \"$\",8\n",
"\nLIST\n",
NULL};
const char *fake_key_messages[] = {
"LOAD \"*\",8,1 and RUN",
"LOAD \"$\",8",
"LIST",
"Type with virtual keyboard",
NULL};
int opt;
opt = menu_select(real_screen, this->menu_font,
fake_key_messages, NULL);
if (opt < 0)
return;
if (opt == 3)
{
const char *seq = this->virtual_keyboard->get_string();
if (seq != NULL)
this->start_fake_key_sequence(seq);
}
else
this->start_fake_key_sequence(fake_key_sequences[opt]);
}
void C64::save_load_state(Prefs *np)
{
int opt = menu_select(real_screen, this->menu_font,
save_load_state_messages, NULL);
switch(opt)
{
case 1: /* save */
{
char save_buf[255];
char prefs_buf[255];
snprintf(save_buf, 255, "%s/%s.sav", SAVES_PATH,
this->save_game_name);
snprintf(prefs_buf, 255, "%s.prefs", save_buf);
this->SaveSnapshot(save_buf);
np->Save(prefs_buf);
} break;
case 0: /* load/delete */
case 2:
{
const char **file_list = get_file_list(SAVES_PATH);
if (file_list == NULL)
break;
int save = menu_select(real_screen, this->menu_font,
file_list, NULL);
if (save >= 0)
{
char save_buf[255];
char prefs_buf[255];
snprintf(save_buf, 255, "%s/%s", SAVES_PATH, file_list[save]);
snprintf(prefs_buf, 255, "%s.prefs", save_buf);
if (opt == 2)
{
unlink(save_buf);
unlink(prefs_buf);
}
else /* Load the snapshot */
{
this->LoadSnapshot(save_buf);
np->Load(prefs_buf);
this->prefs_changed = true;
}
}
/* Cleanup everything */
for ( int i = 0; file_list[i]; i++ )
free((void*)file_list[i]);
free(file_list);
} break;
default:
break;
}
}
/*
* Start main emulation thread
*/
void C64::Run(void)
{
// Reset chips
TheCPU->Reset();
TheSID->Reset();
TheCIA1->Reset();
TheCIA2->Reset();
TheCPU1541->Reset();
// Patch kernal IEC routines
orig_kernal_1d84 = Kernal[0x1d84];
orig_kernal_1d85 = Kernal[0x1d85];
PatchKernal(ThePrefs.FastReset, ThePrefs.Emul1541Proc);
quit_thyself = false;
thread_func();
}
void C64::network_vblank()
{
static uint32_t last_time_update;
#if defined(GEKKO)
Uint32 now = ticks_to_millisecs(gettime());
#else
Uint32 now = SDL_GetTicks();
#endif
/* Perhaps accept a new connection */
Network::CheckNewConnection();
for (int i = 0; i < Network::n_peers; i++) {
Uint8 *master = this->TheDisplay->BitmapBase();
Network *remote = Network::peers[i];
uint8 *js;
static bool has_throttled;
if (this->quit_thyself)
{
remote->Disconnect();
continue;
}
remote->Tick( now - last_time_update );
if (this->network_connection_type == MASTER) {
if (ThePrefs.JoystickSwap)
js = &TheCIA1->Joystick1;
else
js = &TheCIA1->Joystick2;
} else {
if (ThePrefs.JoystickSwap)
js = &TheCIA1->Joystick2;
else
js = &TheCIA1->Joystick1;
}
/* Has the peer sent any data? */
if (remote->ReceiveUpdate() == true)
{
if (remote->DecodeUpdate(remote->GetScreen(), js) == false)
{
/* Disconnect or sending crap, remove this guy! */
Network::RemovePeer(remote);
continue;
}
if (this->network_connection_type == CLIENT)
this->TheDisplay->Update(remote->GetScreen());
}
remote->ResetNetworkUpdate();
if (this->network_connection_type == MASTER &&
remote->ThrottleTraffic()) {
/* Skip this frame if the data rate is too high */
has_throttled = true;
continue;
}
/* Perhaps send updates to the other side (what is determined by
* if this is the master or not) */
remote->EncodeJoystickUpdate(*js);
remote->EncodeDisplay(master, remote->GetScreen());
if (remote->SendUpdate() == false)
{
/* Disconnect or broken data */
printf("Could not send update\n");
Network::RemovePeer(remote);
}
else
remote->ResetNetworkUpdate();
if (1)
{
static uint32_t last_traffic_update;
if (last_time_update - last_traffic_update > 300)
{
TheDisplay->NetworkTrafficMeter(remote->GetKbps() / (8 * 1024.0),
has_throttled);
last_traffic_update = now;
has_throttled = false;
}
}
}
last_time_update = now;
}
/*
* Vertical blank: Poll keyboard and joysticks, update window
*/
void C64::VBlank(bool draw_frame)
{
/* From Acorn port */
static uint32_t lastFrame;
uint32_t now;
uint8 j1, j2;
#if defined(GEKKO)
WPAD_ScanPads();
#endif
// Poll joysticks
j1 = poll_joystick(0);
j2 = poll_joystick(1);
// Poll keyboard
TheDisplay->PollKeyboard(TheCIA1->KeyMatrix, TheCIA1->RevMatrix, &joykey);
if (TheDisplay->quit_requested)
quit_thyself = true;
if (this->fake_key_sequence)
this->run_fake_key_sequence();
#ifndef GEKKO
// Joystick keyboard emulation
if (TheDisplay->NumLock())
j1 &= joykey;
else
j2 &= joykey;
#endif
if (this->network_connection_type == MASTER)
{
/* Only poll one joystick for network servers */
if (ThePrefs.JoystickSwap)
TheCIA1->Joystick2 = j2;
else
TheCIA1->Joystick1 = j2;
}
else
{
TheCIA1->Joystick1 = j1;
TheCIA1->Joystick2 = j2;
}
// Count TOD clocks
TheCIA1->CountTOD();
TheCIA2->CountTOD();
// Update window if needed
if (draw_frame && this->network_connection_type != CLIENT) {
TheDisplay->Update();
}
if (this->have_a_break) {
int submenus[1];
int opt;
int old_swap = ThePrefs.JoystickSwap == true ? 1 : 0;
Prefs np = ThePrefs;
this->prefs_changed = false;
TheSID->PauseSound();
submenus[0] = old_swap;
opt = menu_select(real_screen, this->menu_font,
main_menu_messages, submenus);
switch(opt)
{
case 0: /* Load disc/tape */
this->select_fake_key_sequence(&np);
break;
case 1: /* Insert disc/tape */
this->select_disc(&np);
break;
case 2: /* Reset */
Reset();
break;
case 3: /* Bind keys to joystick */
this->bind_keys(&np);
break;
case 4: /* Other options */
this->other_options(&np);
break;
case 5: /* Swap joysticks */
break;
case 7: /* Save / load game */
this->save_load_state(&np);
break;
case 9: /* Quit */
quit_thyself = true;
break;
case -1:
default:
break;
}
if (submenus[0] == 0)
np.JoystickSwap = false;
else
np.JoystickSwap = true;
if (submenus[0] != old_swap)
this->prefs_changed = true;
if (this->prefs_changed)
{
this->NewPrefs(&np);
ThePrefs = np;
}
TheDisplay->FakeKeyPress(-1, TheCIA1->KeyMatrix,
TheCIA1->RevMatrix);
this->have_a_break = false;
if (this->quit_thyself)
ThePrefs.Save(PREFS_PATH);
}
this->network_vblank();
#if defined(GEKKO)
now = ticks_to_millisecs(gettime());
#else
now = SDL_GetTicks();
#endif
if ( (now - lastFrame) < ThePrefs.MsPerFrame) {
usleep( (ThePrefs.MsPerFrame - (now - lastFrame)) * 1000);
}
lastFrame = now;
}
/*
* The emulation's main loop
*/
void C64::thread_func(void)
{
int linecnt = 0;
#ifdef FRODO_SC
while (!quit_thyself) {
// The order of calls is important here
if (TheVIC->EmulateCycle())
TheSID->EmulateLine();
TheCIA1->CheckIRQs();
TheCIA2->CheckIRQs();
TheCIA1->EmulateCycle();
TheCIA2->EmulateCycle();
TheCPU->EmulateCycle();
if (ThePrefs.Emul1541Proc) {
TheCPU1541->CountVIATimers(1);
if (!TheCPU1541->Idle)
TheCPU1541->EmulateCycle();
}
CycleCounter++;
#else
while (!quit_thyself) {
// The order of calls is important here
int cycles = TheVIC->EmulateLine();
TheSID->EmulateLine();
#if !PRECISE_CIA_CYCLES
TheCIA1->EmulateLine(ThePrefs.CIACycles);
TheCIA2->EmulateLine(ThePrefs.CIACycles);
#endif
if (ThePrefs.Emul1541Proc) {
int cycles_1541 = ThePrefs.FloppyCycles;
TheCPU1541->CountVIATimers(cycles_1541);
if (!TheCPU1541->Idle) {
// 1541 processor active, alternately execute
// 6502 and 6510 instructions until both have
// used up their cycles
while (cycles >= 0 || cycles_1541 >= 0)
if (cycles > cycles_1541)
cycles -= TheCPU->EmulateLine(1);
else
cycles_1541 -= TheCPU1541->EmulateLine(1);
} else
TheCPU->EmulateLine(cycles);
} else
// 1541 processor disabled, only emulate 6510
TheCPU->EmulateLine(cycles);
#endif
linecnt++;
}
}
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