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frodo-wii/Src/Display.cpp

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/*
* Display.cpp - C64 graphics display, emulator window handling
*
* Frodo (C) 1994-1997,2002-2005 Christian Bauer
*
* This program 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 Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "sysdeps.h"
#if defined(GEKKO)
# include <ogc/system.h>
#endif
#include "Display.h"
#include "Version.h"
#include "main.h"
#include "Prefs.h"
#include "C64.h"
#include "CIA.h"
#include "utils.hh"
#include "gui/gui.hh"
#include "gui/status_bar.hh"
#include "gui/virtual_keyboard.hh"
// LED states
enum {
LED_OFF, // LED off
LED_ON, // LED on (green)
LED_ERROR_ON, // LED blinking (red), currently on
LED_ERROR_OFF // LED blinking, currently off
};
#define USE_PEPTO_COLORS 1
#ifdef USE_PEPTO_COLORS
// C64 color palette
// Values based on measurements by Philip "Pepto" Timmermann <pepto@pepto.de>
// (see http://www.pepto.de/projects/colorvic/)
const uint8 palette_red[16] = {
0x00, 0xff, 0x86, 0x4c, 0x88, 0x35, 0x20, 0xcf, 0x88, 0x40, 0xcb, 0x34, 0x68, 0x8b, 0x68, 0xa1
};
const uint8 palette_green[16] = {
0x00, 0xff, 0x19, 0xc1, 0x17, 0xac, 0x07, 0xf2, 0x3e, 0x2a, 0x55, 0x34, 0x68, 0xff, 0x4a, 0xa1
};
const uint8 palette_blue[16] = {
0x00, 0xff, 0x01, 0xe3, 0xbd, 0x0a, 0xc0, 0x2d, 0x00, 0x00, 0x37, 0x34, 0x68, 0x59, 0xff, 0xa1
};
#else
// C64 color palette (traditional Frodo colors)
const uint8 palette_red[16] = {
0x00, 0xff, 0x99, 0x00, 0xcc, 0x44, 0x11, 0xff, 0xaa, 0x66, 0xff, 0x40, 0x80, 0x66, 0x77, 0xc0
};
const uint8 palette_green[16] = {
0x00, 0xff, 0x00, 0xff, 0x00, 0xcc, 0x00, 0xdd, 0x55, 0x33, 0x66, 0x40, 0x80, 0xff, 0x77, 0xc0
};
const uint8 palette_blue[16] = {
0x00, 0xff, 0x00, 0xcc, 0xcc, 0x44, 0x99, 0x00, 0x00, 0x00, 0x66, 0x40, 0x80, 0x66, 0xff, 0xc0
};
#endif
/*
* Update drive LED display (deferred until Update())
*/
void C64Display::UpdateLEDs(int l0, int l1, int l2, int l3)
{
led_state[0] = l0;
led_state[1] = l1;
led_state[2] = l2;
led_state[3] = l3;
}
// Display surface
static Uint8 screen[DISPLAY_X * DISPLAY_Y];
static Uint16 *screen_16;
static Uint32 *screen_32;
static int screen_bits_per_pixel;
static SDL_Surface *sdl_screen;
SDL_Surface *real_screen = NULL;
// Keyboard
static bool num_locked = false;
// SDL joysticks
static SDL_Joystick *joy[2] = {NULL, NULL};
static Uint16 palette_16[PALETTE_SIZE];
static Uint32 palette_32[PALETTE_SIZE];
SDL_Color sdl_palette[PALETTE_SIZE];
/*
C64 keyboard matrix:
Bit 7 6 5 4 3 2 1 0
0 CUD F5 F3 F1 F7 CLR RET DEL
1 SHL E S Z 4 A W 3
2 X T F C 6 D R 5
3 V U H B 8 G Y 7
4 N O K M 0 J I 9
5 , @ : . - L P +
6 / ^ = SHR HOM ; * <20>
7 R/S Q C= SPC 2 CTL <- 1
*/
#define MATRIX(a,b) (((a) << 3) | (b))
/*
* Open window
*/
int init_graphics(void)
{
Uint32 rmask, gmask, bmask, amask;
const SDL_VideoInfo *info = SDL_GetVideoInfo();
Uint32 flags = SDL_DOUBLEBUF;
/* SDL interprets each pixel as a 32-bit number, so our masks must depend
on the endianness (byte order) of the machine */
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
rmask = 0xff000000;
gmask = 0x00ff0000;
bmask = 0x0000ff00;
amask = 0x000000ff;
#else
rmask = 0x000000ff;
gmask = 0x0000ff00;
bmask = 0x00ff0000;
amask = 0xff000000;
#endif
// Open window
SDL_ShowCursor(SDL_DISABLE);
SDL_FreeSurface(sdl_screen);
sdl_screen = SDL_CreateRGBSurface(SDL_SWSURFACE, DISPLAY_X, DISPLAY_Y + 17, 8,
rmask, gmask, bmask, amask);
if (!sdl_screen)
{
fprintf(stderr, "Cannot allocate surface to draw on: %s\n",
SDL_GetError());
exit(1);
}
if (ThePrefs.DisplayType == DISPTYPE_SCREEN)
flags |= SDL_FULLSCREEN;
screen_bits_per_pixel = info->vfmt->BitsPerPixel;
SDL_FreeSurface(real_screen);
real_screen = SDL_SetVideoMode(FULL_DISPLAY_X, FULL_DISPLAY_Y, screen_bits_per_pixel,
flags);
if (!real_screen)
{
fprintf(stderr, "\n\nCannot initialize video: %s\n", SDL_GetError());
exit(1);
}
free(screen_16);
free(screen_32);
switch (screen_bits_per_pixel)
{
case 8:
/* Default, no need to do anything further */
break;
case 16:
/* Allocate a 16 bit screen */
screen_16 = (Uint16*)calloc(real_screen->pitch * FULL_DISPLAY_Y, sizeof(Uint16) );
break;
case 24:
case 32:
screen_32 = (Uint32*)calloc(real_screen->pitch * FULL_DISPLAY_Y, sizeof(Uint32) );
break;
default:
printf("What is this???\n");
break;
}
return 1;
}
/*
* Display constructor
*/
C64Display::C64Display(C64 *the_c64) : TheC64(the_c64)
{
quit_requested = false;
speedometer_string[0] = 0;
networktraffic_string[0] = 0;
this->text_message_send = NULL;
// Open window
SDL_WM_SetCaption(VERSION_STRING, "Frodo");
// LEDs off
for (int i=0; i<4; i++)
led_state[i] = old_led_state[i] = LED_OFF;
}
/*
* Display destructor
*/
C64Display::~C64Display()
{
SDL_Quit();
}
/*
* Prefs may have changed
*/
void C64Display::NewPrefs(Prefs *prefs)
{
}
/*
* Redraw bitmap
*/
void C64Display::Update_32(uint8 *src_pixels)
{
const Uint16 src_pitch = DISPLAY_X;
const int x_border = (DISPLAY_X - FULL_DISPLAY_X / 2) / 2;
const int y_border = (DISPLAY_Y - FULL_DISPLAY_Y / 2) / 2;
Uint32 *dst_pixels = (Uint32*)real_screen->pixels;
const int dst_pitch = real_screen->pitch / sizeof(Uint32);
/* Center, double size */
for (int y = y_border; y < (FULL_DISPLAY_Y/2) + y_border; y++)
{
for (int x = x_border; x < (FULL_DISPLAY_X / 2 + x_border); x++)
{
int src_off = y * src_pitch + x;
int dst_off = ((y * 2 - y_border * 2) * dst_pitch + (x * 2 - x_border * 2));
Uint32 v = palette_32[src_pixels[src_off]];
dst_pixels[ dst_off ] = v;
dst_pixels[ dst_off + 1 ] = v;
dst_pixels[ dst_off + dst_pitch ] = v;
dst_pixels[ dst_off + dst_pitch + 1] = v;
}
}
}
void C64Display::Update_16(uint8 *src_pixels)
{
const Uint16 src_pitch = DISPLAY_X;
const int x_border = (DISPLAY_X - FULL_DISPLAY_X / 2) / 2;
const int y_border = (DISPLAY_Y - FULL_DISPLAY_Y / 2) / 2;
Uint16 *dst_pixels = (Uint16*)real_screen->pixels;
const Uint16 dst_pitch = real_screen->pitch / sizeof(Uint16);
/* Center, double size */
for (int y = y_border; y < (FULL_DISPLAY_Y/2) + y_border; y++)
{
for (int x = x_border; x < (FULL_DISPLAY_X / 2 + x_border); x++)
{
int src_off = y * src_pitch + x;
int dst_off = ((y * 2 - y_border * 2) * dst_pitch + (x * 2 - x_border * 2));
Uint16 v = palette_16[src_pixels[src_off]];
dst_pixels[ dst_off ] = v;
dst_pixels[ dst_off + 1 ] = v;
dst_pixels[ dst_off + dst_pitch ] = v;
dst_pixels[ dst_off + dst_pitch + 1] = v;
}
}
}
void C64Display::Update_8(uint8 *src_pixels)
{
const Uint16 src_pitch = DISPLAY_X;
const int x_border = (DISPLAY_X - FULL_DISPLAY_X / 2) / 2;
const int y_border = (DISPLAY_Y - FULL_DISPLAY_Y / 2) / 2;
Uint8 *dst_pixels = (Uint8*)real_screen->pixels;
const Uint16 dst_pitch = real_screen->pitch;
/* Center, double size */
for (int y = y_border; y < (FULL_DISPLAY_Y/2) + y_border; y++)
{
for (int x = x_border; x < (FULL_DISPLAY_X / 2 + x_border); x++)
{
int src_off = y * src_pitch + x;
int dst_off = (y * 2 - y_border * 2) * dst_pitch + (x * 2 - x_border * 2);
Uint8 v = src_pixels[src_off];
dst_pixels[ dst_off ] = v;
dst_pixels[ dst_off + 1 ] = v;
dst_pixels[ dst_off + dst_pitch ] = v;
dst_pixels[ dst_off + dst_pitch + 1] = v;
}
}
}
void C64Display::Update_stretched(uint8 *src_pixels)
{
SDL_Rect srcrect = {0, 0, DISPLAY_X, DISPLAY_Y};
SDL_Rect dstrect = {0, 0, FULL_DISPLAY_X, FULL_DISPLAY_Y};
Uint8 *dst_pixels = (Uint8*)sdl_screen->pixels;
const Uint16 src_pitch = DISPLAY_X;
/* Draw 1-1 */
for (int y = 0; y < DISPLAY_Y; y++)
{
for (int x = 0; x < DISPLAY_X; x++)
{
int src_off = y * src_pitch + x;
int dst_off = src_off;
Uint8 v = src_pixels[src_off];
dst_pixels[ dst_off ] = v;
}
}
/* Stretch */
SDL_SoftStretch(sdl_screen, &srcrect, real_screen, &dstrect);
}
void C64Display::Update(uint8 *src_pixels)
{
if (0)
this->Update_stretched(src_pixels);
else
{
switch (screen_bits_per_pixel)
{
case 8:
this->Update_8(src_pixels); break;
case 16:
this->Update_16(src_pixels); break;
case 24:
case 32:
default:
this->Update_32((Uint8*)src_pixels); break;
}
}
Gui::gui->draw(real_screen);
SDL_Flip(real_screen);
}
void C64Display::Update()
{
this->Update((Uint8*)screen);
}
SDL_Surface *C64Display::SurfaceFromC64Display()
{
Uint32 rmask,gmask,bmask,amask;
SDL_Surface *out;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
rmask = 0xff000000;
gmask = 0x00ff0000;
bmask = 0x0000ff00;
amask = 0x000000ff;
#else
rmask = 0x000000ff;
gmask = 0x0000ff00;
bmask = 0x00ff0000;
amask = 0xff000000;
#endif
out = SDL_CreateRGBSurface(SDL_SWSURFACE, DISPLAY_X / 2, DISPLAY_Y / 2, 8,
rmask, gmask, bmask, amask);
if (!out)
return NULL;
Uint8 *dst_pixels = (Uint8*)out->pixels;
const Uint16 src_pitch = DISPLAY_X;
/* Draw 1-1 */
for (int y = 0; y < DISPLAY_Y / 2; y++)
{
for (int x = 0; x < DISPLAY_X / 2; x++)
{
int src_off = (y * 2) * src_pitch + (x * 2);
int dst_off = y * out->pitch + x;
Uint8 v = screen[src_off];
dst_pixels[ dst_off ] = v;
}
}
SDL_SetColors(out, sdl_palette, 0, PALETTE_SIZE);
return out;
}
/*
* Draw string into surface using the C64 ROM font
*/
/*
* Draw speedometer
*/
void C64Display::Speedometer(int speed)
{
static int delay = 0;
if (delay >= 20) {
delay = 0;
sprintf(speedometer_string, "%d%%", speed);
} else
delay++;
}
void C64Display::NetworkTrafficMeter(float kb_per_s, bool is_throttled)
{
snprintf(this->networktraffic_string, sizeof(this->networktraffic_string),
"%6.2f KB/S%s", kb_per_s, is_throttled ? " THROTTLED" : "");
}
/*
* Return pointer to bitmap data
*/
uint8 *C64Display::BitmapBase(void)
{
return screen;
}
/*
* Return number of bytes per row
*/
int C64Display::BitmapXMod(void)
{
return DISPLAY_X;
}
void C64Display::FakeKeyPress(int kc, uint8 *CIA_key_matrix,
uint8 *CIA_rev_matrix)
{
// Clear matrices
for (int i = 0; i < 8; i ++)
{
CIA_key_matrix[i] = 0xFF;
CIA_rev_matrix[i] = 0xFF;
}
if (kc != -1)
this->UpdateKeyMatrix(kc, false, CIA_key_matrix, CIA_rev_matrix,
NULL);
}
void C64Display::UpdateKeyMatrix(int c64_key, bool key_up,
uint8 *key_matrix, uint8 *rev_matrix, uint8 *joystick)
{
bool shifted = c64_key & 0x80;
int c64_byte;
int c64_bit;
c64_key &= ~0x80;
c64_byte = (c64_key >> 3) & 7;
c64_bit = c64_key & 7;
// Handle joystick emulation
if (joystick && (c64_key & 0x40)) {
c64_key &= 0x1f;
if (key_up)
*joystick |= c64_key;
else
*joystick &= ~c64_key;
return;
}
if (key_up) {
if (shifted) {
key_matrix[6] |= 0x10;
rev_matrix[4] |= 0x40;
}
key_matrix[c64_byte] |= (1 << c64_bit);
rev_matrix[c64_bit] |= (1 << c64_byte);
} else {
if (shifted) {
key_matrix[6] &= 0xef;
rev_matrix[4] &= 0xbf;
}
key_matrix[c64_byte] &= ~(1 << c64_bit);
rev_matrix[c64_bit] &= ~(1 << c64_byte);
}
}
/*
* Poll the keyboard
*/
void C64Display::TranslateKey(SDLKey key, bool key_up, uint8 *key_matrix,
uint8 *rev_matrix, uint8 *joystick)
{
static bool shift_on = false;
int c64_key = -1;
switch (key) {
case SDLK_a: c64_key = MATRIX(1,2); break;
case SDLK_b: c64_key = MATRIX(3,4); break;
case SDLK_c: c64_key = MATRIX(2,4); break;
case SDLK_d: c64_key = MATRIX(2,2); break;
case SDLK_e: c64_key = MATRIX(1,6); break;
case SDLK_f: c64_key = MATRIX(2,5); break;
case SDLK_g: c64_key = MATRIX(3,2); break;
case SDLK_h: c64_key = MATRIX(3,5); break;
case SDLK_i: c64_key = MATRIX(4,1); break;
case SDLK_j: c64_key = MATRIX(4,2); break;
case SDLK_k: c64_key = MATRIX(4,5); break;
case SDLK_l: c64_key = MATRIX(5,2); break;
case SDLK_m: c64_key = MATRIX(4,4); break;
case SDLK_n: c64_key = MATRIX(4,7); break;
case SDLK_o: c64_key = MATRIX(4,6); break;
case SDLK_p: c64_key = MATRIX(5,1); break;
case SDLK_q: c64_key = MATRIX(7,6); break;
case SDLK_r: c64_key = MATRIX(2,1); break;
case SDLK_s: c64_key = MATRIX(1,5); break;
case SDLK_t: c64_key = MATRIX(2,6); break;
case SDLK_u: c64_key = MATRIX(3,6); break;
case SDLK_v: c64_key = MATRIX(3,7); break;
case SDLK_w: c64_key = MATRIX(1,1); break;
case SDLK_x: c64_key = MATRIX(2,7); break;
case SDLK_y: c64_key = MATRIX(3,1); break;
case SDLK_z: c64_key = MATRIX(1,4); break;
case SDLK_0: c64_key = MATRIX(4,3); break;
case SDLK_1: c64_key = MATRIX(7,0); break;
case SDLK_2: c64_key = MATRIX(7,3); break;
case SDLK_3: c64_key = MATRIX(1,0); break;
case SDLK_4: c64_key = MATRIX(1,3); break;
case SDLK_5: c64_key = MATRIX(2,0); break;
case SDLK_6: c64_key = MATRIX(2,3); break;
case SDLK_7: c64_key = MATRIX(3,0); break;
case SDLK_8: c64_key = MATRIX(3,3); break;
case SDLK_9: c64_key = MATRIX(4,0); break;
case SDLK_SPACE: c64_key = MATRIX(7,4); break;
case SDLK_BACKQUOTE: c64_key = MATRIX(7,1); break;
case SDLK_BACKSLASH: c64_key = MATRIX(6,6); break;
case SDLK_COMMA: c64_key = MATRIX(5,7); break;
case SDLK_PERIOD: c64_key = MATRIX(5,4); break;
case SDLK_MINUS: c64_key = MATRIX(5,0); break;
case SDLK_EQUALS: c64_key = MATRIX(5,3); break;
case SDLK_LEFTBRACKET: c64_key = MATRIX(5,6); break;
case SDLK_RIGHTBRACKET: c64_key = MATRIX(6,1); break;
case SDLK_SEMICOLON: c64_key = MATRIX(5,5); break;
case SDLK_QUOTE: c64_key = MATRIX(6,2); break;
case SDLK_SLASH: c64_key = MATRIX(6,7); break;
case SDLK_ESCAPE: c64_key = MATRIX(7,7); break;
case SDLK_RETURN: c64_key = MATRIX(0,1); break;
case SDLK_BACKSPACE: case SDLK_DELETE: c64_key = MATRIX(0,0); break;
case SDLK_INSERT: c64_key = MATRIX(6,3); break;
case SDLK_HOME: c64_key = MATRIX(6,3); break;
case SDLK_END: c64_key = MATRIX(6,0); break;
case SDLK_PAGEUP: c64_key = MATRIX(6,0); break;
case SDLK_PAGEDOWN: c64_key = MATRIX(6,5); break;
case SDLK_LCTRL: c64_key = 0x10 | 0x40; break;
case SDLK_TAB: c64_key = MATRIX(7,2); break;
case SDLK_RCTRL: c64_key = MATRIX(7,5); break;
case SDLK_LSHIFT: c64_key = MATRIX(1,7); break;
case SDLK_RSHIFT: c64_key = MATRIX(6,4); break;
case SDLK_LALT: case SDLK_LMETA: c64_key = MATRIX(7,5); break;
case SDLK_RALT: case SDLK_RMETA: c64_key = MATRIX(7,5); break;
case SDLK_UP: c64_key = 0x01 | 0x40; break;
case SDLK_DOWN: c64_key = 0x02 | 0x40; break;
case SDLK_LEFT: c64_key = 0x04 | 0x40; break;
case SDLK_RIGHT: c64_key = 0x08 | 0x40; break;
case SDLK_F1: c64_key = MATRIX(0,4); break;
case SDLK_F2: c64_key = MATRIX(0,4) | 0x80; break;
case SDLK_F3: c64_key = MATRIX(0,5); break;
case SDLK_F4: c64_key = MATRIX(0,5) | 0x80; break;
case SDLK_F5: c64_key = MATRIX(0,6); break;
case SDLK_F6: c64_key = MATRIX(0,6) | 0x80; break;
case SDLK_F7: c64_key = MATRIX(0,3); break;
case SDLK_F8: c64_key = MATRIX(0,3) | 0x80; break;
case SDLK_KP0: case SDLK_KP5: c64_key = 0x10 | 0x40; break;
case SDLK_KP1: c64_key = 0x06 | 0x40; break;
case SDLK_KP2: c64_key = 0x02 | 0x40; break;
case SDLK_KP3: c64_key = 0x0a | 0x40; break;
case SDLK_KP4: c64_key = 0x04 | 0x40; break;
case SDLK_KP6: c64_key = 0x08 | 0x40; break;
case SDLK_KP7: c64_key = 0x05 | 0x40; break;
case SDLK_KP8: c64_key = 0x01 | 0x40; break;
case SDLK_KP9: c64_key = 0x09 | 0x40; break;
case SDLK_KP_DIVIDE: c64_key = MATRIX(6,7); break;
case SDLK_KP_ENTER: c64_key = MATRIX(0,1); break;
default: break;
}
if (c64_key < 0)
return;
/* Ugly handling of shift. Sorry about that */
if (!key_up && (c64_key == MATRIX(1,7) || c64_key == MATRIX(6,4)))
shift_on = true;
else if (c64_key == MATRIX(1,7) || c64_key == MATRIX(6,4))
shift_on = false;
this->UpdateKeyMatrix(c64_key, key_up, key_matrix, rev_matrix, joystick);
}
const char *C64Display::GetTextMessage()
{
const char *out = this->text_message_send;
this->text_message_send = NULL;
return out;
}
class TypeNetworkMessageListener : public KeyboardListener
{
public:
TypeNetworkMessageListener(const char **out)
{
this->out = out;
}
virtual void stringCallback(const char *str)
{
*out = (const char *)xstrdup(str);
/* Remove thyself! */
delete this;
}
private:
const char **out;
};
void C64Display::TypeNetworkMessage(bool broadcast)
{
TypeNetworkMessageListener *nl = new TypeNetworkMessageListener(&this->text_message_send);
this->text_message_broadcast = broadcast;
Gui::gui->status_bar->queueMessage("Type message to send to peer");
VirtualKeyboard::kbd->registerListener(nl);
VirtualKeyboard::kbd->activate();
}
void C64Display::PollKeyboard(uint8 *key_matrix, uint8 *rev_matrix, uint8 *joystick)
{
SDL_Event event;
while (SDL_PollEvent(&event)) {
Gui::gui->pushEvent(&event);
/* Ignore keyboard input while the menu is active */
if (Gui::gui->is_active || Gui::gui->kbd)
continue;
switch (event.type) {
// Key pressed
case SDL_KEYDOWN:
switch (event.key.keysym.sym) {
case SDLK_F10: // F10/ScrLk: Enter text (for network taunts)
case SDLK_SCROLLOCK:
if (TheC64->network_connection_type == CLIENT ||
TheC64->network_connection_type == MASTER)
this->TypeNetworkMessage();
break;
case SDLK_F11: // F11: NMI (Restore)
TheC64->NMI();
break;
case SDLK_F12: // F12: Reset
TheC64->Reset();
break;
case SDLK_HOME: // Home: Pause and enter menu
Gui::gui->activate();
break;
case SDLK_KP_PLUS: // '+' on keypad: Increase SkipFrames
ThePrefs.SkipFrames++;
break;
case SDLK_KP_MINUS: // '-' on keypad: Decrease SkipFrames
if (ThePrefs.SkipFrames > 1)
ThePrefs.SkipFrames--;
break;
case SDLK_KP_MULTIPLY: // '*' on keypad: Toggle speed limiter
ThePrefs.LimitSpeed = !ThePrefs.LimitSpeed;
break;
default:
TranslateKey(event.key.keysym.sym, false, key_matrix, rev_matrix, joystick);
break;
}
break;
// Key released
case SDL_KEYUP:
TranslateKey(event.key.keysym.sym, true, key_matrix, rev_matrix, joystick);
break;
// Quit Frodo
case SDL_QUIT:
quit_requested = true;
break;
}
}
#if defined(GEKKO)
if (SYS_ResetButtonDown() != 0)
quit_requested = true;
#endif
}
/*
* Check if NumLock is down (for switching the joystick keyboard emulation)
*/
bool C64Display::NumLock(void)
{
return num_locked;
}
/*
* Open/close joystick drivers given old and new state of
* joystick preferences
*/
void C64::open_joystick(int port)
{
joy_minx[port] = joy_miny[port] = -32767; // Reset calibration
joy_maxx[port] = joy_maxy[port] = 32768;
joy[port] = SDL_JoystickOpen(port);
if (joy[port] == NULL)
fprintf(stderr, "Couldn't open joystick %d\n", port + 1);
}
void C64::close_joystick(int port)
{
if (joy[port]) {
SDL_JoystickClose(joy[port]);
joy[port] = NULL;
}
}
/* The implementation principles are borrowed from UAE */
uint8 C64::poll_joystick_axes(int port, bool *has_event)
{
SDL_Joystick *js = joy[port];
unsigned int i, axes;
uint8 out = 0xff;
axes = SDL_JoystickNumAxes (js);
for (i = 0; i < axes; i++) {
int axis;
if (ThePrefs.JoystickAxes[i] == JOY_NONE)
continue;
axis = SDL_JoystickGetAxis (js, i);
/* Assume horizontal */
int *max_axis = &this->joy_maxx[port];
int *min_axis = &this->joy_minx[port];
uint8 neg_val = 0xfb;
uint8 pos_val = 0xf7;
event_t gui_neg_val = KEY_LEFT;
event_t gui_pos_val = KEY_RIGHT;
if (ThePrefs.JoystickAxes[i] == JOY_VERT)
{
max_axis = &this->joy_maxy[port];
min_axis = &this->joy_miny[port];
neg_val = 0xfe;
pos_val = 0xfd;
gui_neg_val = KEY_UP;
gui_pos_val = KEY_DOWN;
}
/* Dynamic joystick calibration */
if (axis > *max_axis)
*max_axis = axis;
if (axis < *min_axis)
*min_axis = axis;
/* Too small as of yet */
if (*max_axis - *min_axis < 1000)
continue;
if (axis < (*min_axis + (*max_axis - *min_axis)/3)) {
out &= neg_val;
Gui::gui->pushJoystickEvent(gui_neg_val);
*has_event = true;
}
else if (axis > (*min_axis + 2*(*max_axis - *min_axis)/3)) {
out &= pos_val;
Gui::gui->pushJoystickEvent(gui_pos_val);
*has_event = true;
}
}
return out;
}
uint8 C64::poll_joystick_hats(int port, bool *has_event)
{
SDL_Joystick *js = joy[port];
unsigned int i, hats;
uint8 out = 0xff;
hats = SDL_JoystickNumHats(js);
for (i = 0; i < hats; i++) {
Uint8 v = SDL_JoystickGetHat (js, i);
Uint8 up_mask = 0xfe;
Uint8 down_mask = 0xfd;
Uint8 left_mask = 0xfb;
Uint8 right_mask = 0xf7;
event_t up_ev = KEY_UP;
event_t down_ev = KEY_DOWN;
event_t left_ev = KEY_LEFT;
event_t right_ev = KEY_RIGHT;
if (ThePrefs.MenuJoystickHats[i] == HAT_ROTATED_90)
{
up_mask = 0xf7;
down_mask = 0xfb;
left_mask = 0xfe;
right_mask = 0xfd;
up_ev = KEY_RIGHT;
down_ev = KEY_LEFT;
left_ev = KEY_UP;
right_ev = KEY_DOWN;
}
if ((v & (SDL_HAT_UP | SDL_HAT_DOWN | SDL_HAT_LEFT | SDL_HAT_RIGHT)) == 0)
continue;
*has_event = true;
if (v & SDL_HAT_UP) {
out &= up_mask;
Gui::gui->pushJoystickEvent(up_ev);
}
if (v & SDL_HAT_DOWN) {
out &= down_mask;
Gui::gui->pushJoystickEvent(down_ev);
}
if (v & SDL_HAT_LEFT) {
out &= left_mask;
Gui::gui->pushJoystickEvent(left_ev);
}
if (v & SDL_HAT_RIGHT) {
out &= right_mask;
Gui::gui->pushJoystickEvent(right_ev);
}
}
return out;
}
uint8 C64::poll_joystick_buttons(int port, uint8 *table, bool *has_event)
{
SDL_Joystick *js = joy[port];
uint8 out = 0xff;
int i;
for (i = 0; i < SDL_JoystickNumButtons (js); i++) {
bool cur = SDL_JoystickGetButton (js, i) ? true : false;
int kc = ThePrefs.JoystickButtons[i];
event_t ev = (event_t)ThePrefs.MenuJoystickButtons[i];
if (cur && ev != EVENT_NONE)
{
Gui::gui->pushJoystickEvent(ev);
*has_event = true;
}
if (kc == JOY_NONE)
continue;
if (table[kc] == 0)
table[kc] = cur ? 2 : 1;
/* Special case for joysticks: Each button can be pressed multiple times */
if ((kc & 0x40) && cur)
table[kc] = 2;
}
return out;
}
/*
* Poll joystick port, return CIA mask
*/
uint8 C64::poll_joystick(int port)
{
bool has_event = false;
uint8 out = 0xff;
static uint8 last_table_ports[2][0xff];
uint8 table_ports[2][0xff];
uint8 *last_table = last_table_ports[port];
uint8 *table = table_ports[port];
if (!joy[port])
return out;
memset(table, 0, 0xff);
out &= this->poll_joystick_axes(port, &has_event);
out &= this->poll_joystick_hats(port, &has_event);
out &= this->poll_joystick_buttons(port, table, &has_event);
if (!has_event)
Gui::gui->pushJoystickEvent(EVENT_NONE);
/* No joystick input when the Gui is active */
if (Gui::gui->is_active || Gui::gui->kbd)
return 0xff;
/* Handle keyboard codes */
for (int i = 0; i < 0x51; i++)
{
if (table[i] == 0)
continue;
if ( !(i & 0x40) && table[i] == last_table[i] )
continue;
TheDisplay->UpdateKeyMatrix(i, table[i] == 1,
TheCIA1->KeyMatrix, TheCIA1->RevMatrix, &out);
}
memcpy(last_table, table, 0xff);
return out;
}
/*
* Allocate C64 colors
*/
void C64Display::InitColors(uint8 *colors)
{
for (int i=0; i<16; i++) {
sdl_palette[i].r = palette_red[i];
sdl_palette[i].g = palette_green[i];
sdl_palette[i].b = palette_blue[i];
}
sdl_palette[fill_gray].r = sdl_palette[fill_gray].g = sdl_palette[fill_gray].b = 0xd0;
sdl_palette[shine_gray].r = sdl_palette[shine_gray].g = sdl_palette[shine_gray].b = 0xf0;
sdl_palette[shadow_gray].r = sdl_palette[shadow_gray].g = sdl_palette[shadow_gray].b = 0x80;
sdl_palette[red].r = 0xf0;
sdl_palette[red].g = sdl_palette[red].b = 0;
sdl_palette[green].g = 0xf0;
sdl_palette[green].r = sdl_palette[green].b = 0;
if (real_screen->format->BitsPerPixel == 8)
SDL_SetColors(real_screen, sdl_palette, 0, PALETTE_SIZE);
for (int i = 0; i < PALETTE_SIZE; i++) {
int rs = real_screen->format->Rshift;
int gs = real_screen->format->Gshift;
int bs = real_screen->format->Bshift;
int rl = real_screen->format->Rloss;
int gl = real_screen->format->Gloss;
int bl = real_screen->format->Bloss;
int rm = real_screen->format->Rmask;
int gm = real_screen->format->Gmask;
int bm = real_screen->format->Bmask;
uint32 r = palette_red[i] & 0xff;
uint32 g = palette_green[i] & 0xff;
uint32 b = palette_blue[i] & 0xff;
palette_16[i] = (((r >> rl) << rs) & rm) | (((g >> gl) << gs) & gm) | (((b >> bl) << bs) & bm);
palette_32[i] = (((r >> rl) << rs) & rm) | (((g >> gl) << gs) & gm) | (((b >> bl) << bs) & bm);
}
for (int i=0; i<256; i++)
colors[i] = i & 0x0f;
}
/*
* Show a requester (error message)
*/
long int ShowRequester(const char *a, const char *b, const char *)
{
printf("%s: %s\n", a, b);
return 1;
}
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