/* * Display_SDL.h - C64 graphics display, emulator window handling, * SDL specific stuff * * Frodo (C) 1994-1997,2002-2004 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 "C64.h" #include "SAM.h" #include "Version.h" #include // Display surface static SDL_Surface *screen = NULL; // Keyboard static bool num_locked = false; // For LED error blinking static C64Display *c64_disp; static struct sigaction pulse_sa; static itimerval pulse_tv; // SDL joysticks static SDL_Joystick *joy[2] = {NULL, NULL}; // Colors for speedometer/drive LEDs enum { black = 0, white = 1, fill_gray = 16, shine_gray = 17, shadow_gray = 18, red = 19, green = 20, PALETTE_SIZE = 21 }; /* 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 ; * £ 7 R/S Q C= SPC 2 CTL <- 1 */ #define MATRIX(a,b) (((a) << 3) | (b)) /* * Open window */ int init_graphics(void) { // Init SDL if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0) { fprintf(stderr, "Couldn't initialize SDL (%s)\n", SDL_GetError()); return 0; } return 1; } /* * Display constructor */ C64Display::C64Display(C64 *the_c64) : TheC64(the_c64) { quit_requested = false; speedometer_string[0] = 0; // Open window SDL_WM_SetCaption(VERSION_STRING, "Frodo"); screen = SDL_SetVideoMode(DISPLAY_X, DISPLAY_Y + 17, 8, SDL_DOUBLEBUF | (ThePrefs.DisplayType == DISPTYPE_SCREEN ? SDL_FULLSCREEN : 0)); // LEDs off for (int i=0; i<4; i++) led_state[i] = old_led_state[i] = LED_OFF; // Start timer for LED error blinking c64_disp = this; pulse_sa.sa_handler = (void (*)(int))pulse_handler; pulse_sa.sa_flags = SA_RESTART; sigemptyset(&pulse_sa.sa_mask); sigaction(SIGALRM, &pulse_sa, NULL); pulse_tv.it_interval.tv_sec = 0; pulse_tv.it_interval.tv_usec = 400000; pulse_tv.it_value.tv_sec = 0; pulse_tv.it_value.tv_usec = 400000; setitimer(ITIMER_REAL, &pulse_tv, NULL); } /* * Display destructor */ C64Display::~C64Display() { SDL_Quit(); } /* * Prefs may have changed */ void C64Display::NewPrefs(Prefs *prefs) { } /* * Redraw bitmap */ void C64Display::Update(void) { // Draw speedometer/LEDs SDL_Rect r = {0, DISPLAY_Y, DISPLAY_X, 15}; SDL_FillRect(screen, &r, fill_gray); r.w = DISPLAY_X; r.h = 1; SDL_FillRect(screen, &r, shine_gray); r.y = DISPLAY_Y + 14; SDL_FillRect(screen, &r, shadow_gray); r.w = 16; for (int i=2; i<6; i++) { r.x = DISPLAY_X * i/5 - 24; r.y = DISPLAY_Y + 4; SDL_FillRect(screen, &r, shadow_gray); r.y = DISPLAY_Y + 10; SDL_FillRect(screen, &r, shine_gray); } r.y = DISPLAY_Y; r.w = 1; r.h = 15; for (int i=0; i<5; i++) { r.x = DISPLAY_X * i / 5; SDL_FillRect(screen, &r, shine_gray); r.x = DISPLAY_X * (i+1) / 5 - 1; SDL_FillRect(screen, &r, shadow_gray); } r.y = DISPLAY_Y + 4; r.h = 7; for (int i=2; i<6; i++) { r.x = DISPLAY_X * i/5 - 24; SDL_FillRect(screen, &r, shadow_gray); r.x = DISPLAY_X * i/5 - 9; SDL_FillRect(screen, &r, shine_gray); } r.y = DISPLAY_Y + 5; r.w = 14; r.h = 5; for (int i=0; i<4; i++) { r.x = DISPLAY_X * (i+2) / 5 - 23; int c; switch (led_state[i]) { case LED_ON: c = green; break; case LED_ERROR_ON: c = red; break; default: c = black; break; } SDL_FillRect(screen, &r, c); } draw_string(screen, DISPLAY_X * 1/5 + 8, DISPLAY_Y + 4, "D\x12 8", black, fill_gray); draw_string(screen, DISPLAY_X * 2/5 + 8, DISPLAY_Y + 4, "D\x12 9", black, fill_gray); draw_string(screen, DISPLAY_X * 3/5 + 8, DISPLAY_Y + 4, "D\x12 10", black, fill_gray); draw_string(screen, DISPLAY_X * 4/5 + 8, DISPLAY_Y + 4, "D\x12 11", black, fill_gray); draw_string(screen, 24, DISPLAY_Y + 4, speedometer_string, black, fill_gray); // Update display SDL_Flip(screen); } /* * Draw string into surface using the C64 ROM font */ void C64Display::draw_string(SDL_Surface *s, int x, int y, const char *str, uint8 front_color, uint8 back_color) { uint8 *pb = (uint8 *)s->pixels + s->pitch*y + x; char c; while ((c = *str++) != 0) { uint8 *q = TheC64->Char + c*8 + 0x800; uint8 *p = pb; for (int y=0; y<8; y++) { uint8 v = *q++; p[0] = (v & 0x80) ? front_color : back_color; p[1] = (v & 0x40) ? front_color : back_color; p[2] = (v & 0x20) ? front_color : back_color; p[3] = (v & 0x10) ? front_color : back_color; p[4] = (v & 0x08) ? front_color : back_color; p[5] = (v & 0x04) ? front_color : back_color; p[6] = (v & 0x02) ? front_color : back_color; p[7] = (v & 0x01) ? front_color : back_color; p += s->pitch; } pb += 8; } } /* * LED error blink */ void C64Display::pulse_handler(...) { for (int i=0; i<4; i++) switch (c64_disp->led_state[i]) { case LED_ERROR_ON: c64_disp->led_state[i] = LED_ERROR_OFF; break; case LED_ERROR_OFF: c64_disp->led_state[i] = LED_ERROR_ON; break; } } /* * Draw speedometer */ void C64Display::Speedometer(int speed) { static int delay = 0; if (delay >= 20) { delay = 0; sprintf(speedometer_string, "%d%%", speed); } else delay++; } /* * Return pointer to bitmap data */ uint8 *C64Display::BitmapBase(void) { return (uint8 *)screen->pixels; } /* * Return number of bytes per row */ int C64Display::BitmapXMod(void) { return screen->pitch; } /* * Poll the keyboard */ static void translate_key(SDLKey key, bool key_up, uint8 *key_matrix, uint8 *rev_matrix, uint8 *joystick) { 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: 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 = MATRIX(0,7)| 0x80; break; case SDLK_DOWN: c64_key = MATRIX(0,7); break; case SDLK_LEFT: c64_key = MATRIX(0,2) | 0x80; break; case SDLK_RIGHT: c64_key = MATRIX(0,2); 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; // Handle joystick emulation if (c64_key & 0x40) { c64_key &= 0x1f; if (key_up) *joystick |= c64_key; else *joystick &= ~c64_key; return; } // Handle other keys bool shifted = c64_key & 0x80; int c64_byte = (c64_key >> 3) & 7; int c64_bit = c64_key & 7; 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); } } void C64Display::PollKeyboard(uint8 *key_matrix, uint8 *rev_matrix, uint8 *joystick) { SDL_Event event; while (SDL_PollEvent(&event)) { switch (event.type) { // Key pressed case SDL_KEYDOWN: switch (event.key.keysym.sym) { case SDLK_F9: // F9: Invoke SAM SAM(TheC64); break; case SDLK_F10: // F10: Quit quit_requested = true; break; case SDLK_F11: // F11: NMI (Restore) TheC64->NMI(); break; case SDLK_F12: // F12: Reset TheC64->Reset(); break; case SDLK_NUMLOCK: num_locked = true; 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: translate_key(event.key.keysym.sym, false, key_matrix, rev_matrix, joystick); break; } break; // Key released case SDL_KEYUP: if (event.key.keysym.sym == SDLK_NUMLOCK) num_locked = false; else translate_key(event.key.keysym.sym, true, key_matrix, rev_matrix, joystick); break; // Quit Frodo case SDL_QUIT: quit_requested = true; break; } } } /* * 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_close_joystick(int port, int oldjoy, int newjoy) { if (oldjoy != newjoy) { joy_minx[port] = joy_miny[port] = 32767; // Reset calibration joy_maxx[port] = joy_maxy[port] = -32768; if (newjoy) { joy[port] = SDL_JoystickOpen(newjoy - 1); if (joy[port] == NULL) fprintf(stderr, "Couldn't open joystick %d\n", port + 1); } else { if (joy[port]) { SDL_JoystickClose(joy[port]); joy[port] = NULL; } } } } void C64::open_close_joysticks(int oldjoy1, int oldjoy2, int newjoy1, int newjoy2) { open_close_joystick(0, oldjoy1, newjoy1); open_close_joystick(1, oldjoy2, newjoy2); } /* * Poll joystick port, return CIA mask */ uint8 C64::poll_joystick(int port) { uint8 j = 0xff; if (port == 0 && (joy[0] || joy[1])) SDL_JoystickUpdate(); if (joy[port]) { int x = SDL_JoystickGetAxis(joy[port], 0), y = SDL_JoystickGetAxis(joy[port], 1); if (x > joy_maxx[port]) joy_maxx[port] = x; if (x < joy_minx[port]) joy_minx[port] = x; if (y > joy_maxy[port]) joy_maxy[port] = y; if (y < joy_miny[port]) joy_miny[port] = y; if (joy_maxx[port] - joy_minx[port] < 100 || joy_maxy[port] - joy_miny[port] < 100) return 0xff; if (x < (joy_minx[port] + (joy_maxx[port]-joy_minx[port])/3)) j &= 0xfb; // Left else if (x > (joy_minx[port] + 2*(joy_maxx[port]-joy_minx[port])/3)) j &= 0xf7; // Right if (y < (joy_miny[port] + (joy_maxy[port]-joy_miny[port])/3)) j &= 0xfe; // Up else if (y > (joy_miny[port] + 2*(joy_maxy[port]-joy_miny[port])/3)) j &= 0xfd; // Down if (SDL_JoystickGetButton(joy[port], 0)) j &= 0xef; // Button } return j; } /* * Allocate C64 colors */ void C64Display::InitColors(uint8 *colors) { SDL_Color palette[PALETTE_SIZE]; for (int i=0; i<16; i++) { palette[i].r = palette_red[i]; palette[i].g = palette_green[i]; palette[i].b = palette_blue[i]; } palette[fill_gray].r = palette[fill_gray].g = palette[fill_gray].b = 0xd0; palette[shine_gray].r = palette[shine_gray].g = palette[shine_gray].b = 0xf0; palette[shadow_gray].r = palette[shadow_gray].g = palette[shadow_gray].b = 0x80; palette[red].r = 0xf0; palette[red].g = palette[red].b = 0; palette[green].g = 0xf0; palette[green].r = palette[green].b = 0; SDL_SetColors(screen, palette, 0, PALETTE_SIZE); for (int i=0; i<256; i++) colors[i] = i & 0x0f; } /* * Show a requester (error message) */ long int ShowRequester(char *a,char *b,char *) { printf("%s: %s\n", a, b); return 1; }