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cebix |
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/* |
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* Display_SDL.h - C64 graphics display, emulator window handling, |
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* SDL specific stuff |
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* |
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* Frodo (C) 1994-1997,2002 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#include "C64.h" |
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#include "SAM.h" |
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#include "Version.h" |
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#include <SDL.h> |
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// Display surface |
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static SDL_Surface *screen = NULL; |
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// Keyboard |
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static bool num_locked = false; |
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// For LED error blinking |
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static C64Display *c64_disp; |
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static struct sigaction pulse_sa; |
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static itimerval pulse_tv; |
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// Colors for speedometer/drive LEDs |
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enum { |
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black = 0, |
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white = 1, |
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fill_gray = 16, |
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shine_gray = 17, |
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shadow_gray = 18, |
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red = 19, |
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green = 20, |
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PALETTE_SIZE = 21 |
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}; |
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/* |
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C64 keyboard matrix: |
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Bit 7 6 5 4 3 2 1 0 |
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0 CUD F5 F3 F1 F7 CLR RET DEL |
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1 SHL E S Z 4 A W 3 |
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2 X T F C 6 D R 5 |
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3 V U H B 8 G Y 7 |
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4 N O K M 0 J I 9 |
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5 , @ : . - L P + |
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6 / ^ = SHR HOM ; * £ |
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7 R/S Q C= SPC 2 CTL <- 1 |
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*/ |
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#define MATRIX(a,b) (((a) << 3) | (b)) |
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/* |
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* Open window |
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*/ |
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int init_graphics(void) |
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{ |
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// Init SDL |
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if (SDL_Init(SDL_INIT_VIDEO) < 0) { |
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fprintf(stderr, "Couldn't initialize SDL (%s)\n", SDL_GetError()); |
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return 0; |
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} |
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// Open window |
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SDL_WM_SetCaption(VERSION_STRING, "Frodo"); |
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screen = SDL_SetVideoMode(DISPLAY_X, DISPLAY_Y + 17, 8, SDL_DOUBLEBUF); |
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return 1; |
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} |
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/* |
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* Display constructor |
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*/ |
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C64Display::C64Display(C64 *the_c64) : TheC64(the_c64) |
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{ |
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quit_requested = false; |
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speedometer_string[0] = 0; |
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// LEDs off |
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for (int i=0; i<4; i++) |
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led_state[i] = old_led_state[i] = LED_OFF; |
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// Start timer for LED error blinking |
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c64_disp = this; |
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pulse_sa.sa_handler = (void (*)(int))pulse_handler; |
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pulse_sa.sa_flags = 0; |
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sigemptyset(&pulse_sa.sa_mask); |
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sigaction(SIGALRM, &pulse_sa, NULL); |
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pulse_tv.it_interval.tv_sec = 0; |
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pulse_tv.it_interval.tv_usec = 400000; |
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pulse_tv.it_value.tv_sec = 0; |
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pulse_tv.it_value.tv_usec = 400000; |
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setitimer(ITIMER_REAL, &pulse_tv, NULL); |
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} |
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/* |
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* Display destructor |
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*/ |
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C64Display::~C64Display() |
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{ |
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SDL_Quit(); |
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} |
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/* |
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* Prefs may have changed |
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*/ |
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void C64Display::NewPrefs(Prefs *prefs) |
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{ |
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} |
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/* |
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* Redraw bitmap |
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*/ |
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void C64Display::Update(void) |
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{ |
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// Draw speedometer/LEDs |
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SDL_Rect r = {0, DISPLAY_Y, DISPLAY_X, 15}; |
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SDL_FillRect(screen, &r, fill_gray); |
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r.w = DISPLAY_X; r.h = 1; |
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SDL_FillRect(screen, &r, shine_gray); |
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r.y = DISPLAY_Y + 14; |
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SDL_FillRect(screen, &r, shadow_gray); |
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r.w = 16; |
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for (int i=2; i<6; i++) { |
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r.x = DISPLAY_X * i/5 - 24; r.y = DISPLAY_Y + 4; |
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SDL_FillRect(screen, &r, shadow_gray); |
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r.y = DISPLAY_Y + 10; |
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SDL_FillRect(screen, &r, shine_gray); |
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} |
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r.y = DISPLAY_Y; r.w = 1; r.h = 15; |
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for (int i=0; i<5; i++) { |
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r.x = DISPLAY_X * i / 5; |
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SDL_FillRect(screen, &r, shine_gray); |
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r.x = DISPLAY_X * (i+1) / 5 - 1; |
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SDL_FillRect(screen, &r, shadow_gray); |
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} |
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r.y = DISPLAY_Y + 4; r.h = 7; |
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for (int i=2; i<6; i++) { |
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r.x = DISPLAY_X * i/5 - 24; |
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SDL_FillRect(screen, &r, shadow_gray); |
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r.x = DISPLAY_X * i/5 - 9; |
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SDL_FillRect(screen, &r, shine_gray); |
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} |
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r.y = DISPLAY_Y + 5; r.w = 14; r.h = 5; |
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for (int i=0; i<4; i++) { |
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r.x = DISPLAY_X * (i+2) / 5 - 23; |
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int c; |
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switch (led_state[i]) { |
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case LED_ON: |
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c = green; |
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break; |
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case LED_ERROR_ON: |
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c = red; |
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break; |
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default: |
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c = black; |
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break; |
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} |
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SDL_FillRect(screen, &r, c); |
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} |
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draw_string(screen, DISPLAY_X * 1/5 + 8, DISPLAY_Y + 4, "D\x12 8", black, fill_gray); |
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draw_string(screen, DISPLAY_X * 2/5 + 8, DISPLAY_Y + 4, "D\x12 9", black, fill_gray); |
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draw_string(screen, DISPLAY_X * 3/5 + 8, DISPLAY_Y + 4, "D\x12 10", black, fill_gray); |
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draw_string(screen, DISPLAY_X * 4/5 + 8, DISPLAY_Y + 4, "D\x12 11", black, fill_gray); |
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draw_string(screen, 24, DISPLAY_Y + 4, speedometer_string, black, fill_gray); |
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// Update display |
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SDL_Flip(screen); |
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} |
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/* |
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* Draw string into surface using the C64 ROM font |
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*/ |
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void C64Display::draw_string(SDL_Surface *s, int x, int y, const char *str, uint8 front_color, uint8 back_color) |
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{ |
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uint8 *pb = (uint8 *)s->pixels + s->pitch*y + x; |
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char c; |
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while ((c = *str++) != 0) { |
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uint8 *q = TheC64->Char + c*8 + 0x800; |
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uint8 *p = pb; |
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for (int y=0; y<8; y++) { |
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uint8 v = *q++; |
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p[0] = (v & 0x80) ? front_color : back_color; |
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p[1] = (v & 0x40) ? front_color : back_color; |
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p[2] = (v & 0x20) ? front_color : back_color; |
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p[3] = (v & 0x10) ? front_color : back_color; |
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p[4] = (v & 0x08) ? front_color : back_color; |
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p[5] = (v & 0x04) ? front_color : back_color; |
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p[6] = (v & 0x02) ? front_color : back_color; |
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p[7] = (v & 0x01) ? front_color : back_color; |
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p += s->pitch; |
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} |
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pb += 8; |
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} |
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} |
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/* |
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* LED error blink |
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*/ |
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void C64Display::pulse_handler(...) |
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{ |
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for (int i=0; i<4; i++) |
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switch (c64_disp->led_state[i]) { |
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case LED_ERROR_ON: |
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c64_disp->led_state[i] = LED_ERROR_OFF; |
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break; |
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case LED_ERROR_OFF: |
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c64_disp->led_state[i] = LED_ERROR_ON; |
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break; |
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} |
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} |
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/* |
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* Draw speedometer |
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*/ |
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void C64Display::Speedometer(int speed) |
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{ |
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static int delay = 0; |
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if (delay >= 20) { |
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delay = 0; |
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sprintf(speedometer_string, "%d%%", speed); |
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} else |
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delay++; |
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} |
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/* |
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* Return pointer to bitmap data |
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*/ |
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uint8 *C64Display::BitmapBase(void) |
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{ |
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return (uint8 *)screen->pixels; |
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} |
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/* |
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* Return number of bytes per row |
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*/ |
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int C64Display::BitmapXMod(void) |
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{ |
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return screen->pitch; |
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} |
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/* |
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* Poll the keyboard |
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*/ |
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static void translate_key(SDLKey key, bool key_up, uint8 *key_matrix, uint8 *rev_matrix, uint8 *joystick) |
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{ |
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int c64_key = -1; |
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switch (key) { |
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case SDLK_a: c64_key = MATRIX(1,2); break; |
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case SDLK_b: c64_key = MATRIX(3,4); break; |
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case SDLK_c: c64_key = MATRIX(2,4); break; |
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case SDLK_d: c64_key = MATRIX(2,2); break; |
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case SDLK_e: c64_key = MATRIX(1,6); break; |
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case SDLK_f: c64_key = MATRIX(2,5); break; |
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case SDLK_g: c64_key = MATRIX(3,2); break; |
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case SDLK_h: c64_key = MATRIX(3,5); break; |
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case SDLK_i: c64_key = MATRIX(4,1); break; |
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case SDLK_j: c64_key = MATRIX(4,2); break; |
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case SDLK_k: c64_key = MATRIX(4,5); break; |
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case SDLK_l: c64_key = MATRIX(5,2); break; |
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case SDLK_m: c64_key = MATRIX(4,4); break; |
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case SDLK_n: c64_key = MATRIX(4,7); break; |
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case SDLK_o: c64_key = MATRIX(4,6); break; |
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case SDLK_p: c64_key = MATRIX(5,1); break; |
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case SDLK_q: c64_key = MATRIX(7,6); break; |
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case SDLK_r: c64_key = MATRIX(2,1); break; |
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case SDLK_s: c64_key = MATRIX(1,5); break; |
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case SDLK_t: c64_key = MATRIX(2,6); break; |
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case SDLK_u: c64_key = MATRIX(3,6); break; |
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case SDLK_v: c64_key = MATRIX(3,7); break; |
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case SDLK_w: c64_key = MATRIX(1,1); break; |
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case SDLK_x: c64_key = MATRIX(2,7); break; |
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case SDLK_y: c64_key = MATRIX(3,1); break; |
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case SDLK_z: c64_key = MATRIX(1,4); break; |
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case SDLK_0: c64_key = MATRIX(4,3); break; |
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case SDLK_1: c64_key = MATRIX(7,0); break; |
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case SDLK_2: c64_key = MATRIX(7,3); break; |
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case SDLK_3: c64_key = MATRIX(1,0); break; |
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case SDLK_4: c64_key = MATRIX(1,3); break; |
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case SDLK_5: c64_key = MATRIX(2,0); break; |
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case SDLK_6: c64_key = MATRIX(2,3); break; |
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case SDLK_7: c64_key = MATRIX(3,0); break; |
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case SDLK_8: c64_key = MATRIX(3,3); break; |
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case SDLK_9: c64_key = MATRIX(4,0); break; |
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case SDLK_SPACE: c64_key = MATRIX(7,4); break; |
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case SDLK_BACKQUOTE: c64_key = MATRIX(7,1); break; |
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case SDLK_BACKSLASH: c64_key = MATRIX(6,6); break; |
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case SDLK_COMMA: c64_key = MATRIX(5,7); break; |
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case SDLK_PERIOD: c64_key = MATRIX(5,4); break; |
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case SDLK_MINUS: c64_key = MATRIX(5,0); break; |
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case SDLK_EQUALS: c64_key = MATRIX(5,3); break; |
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case SDLK_LEFTBRACKET: c64_key = MATRIX(5,6); break; |
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case SDLK_RIGHTBRACKET: c64_key = MATRIX(6,1); break; |
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case SDLK_SEMICOLON: c64_key = MATRIX(5,5); break; |
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case SDLK_QUOTE: c64_key = MATRIX(6,2); break; |
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case SDLK_SLASH: c64_key = MATRIX(6,7); break; |
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case SDLK_ESCAPE: c64_key = MATRIX(7,7); break; |
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case SDLK_RETURN: c64_key = MATRIX(0,1); break; |
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case SDLK_BACKSPACE: case SDLK_DELETE: c64_key = MATRIX(0,0); break; |
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case SDLK_INSERT: c64_key = MATRIX(6,3); break; |
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case SDLK_HOME: c64_key = MATRIX(6,3); break; |
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case SDLK_END: c64_key = MATRIX(6,0); break; |
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case SDLK_PAGEUP: c64_key = MATRIX(6,0); break; |
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case SDLK_PAGEDOWN: c64_key = MATRIX(6,5); break; |
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case SDLK_LCTRL: case SDLK_TAB: c64_key = MATRIX(7,2); break; |
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case SDLK_RCTRL: c64_key = MATRIX(7,5); break; |
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case SDLK_LSHIFT: c64_key = MATRIX(1,7); break; |
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case SDLK_RSHIFT: c64_key = MATRIX(6,4); break; |
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case SDLK_LALT: case SDLK_LMETA: c64_key = MATRIX(7,5); break; |
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case SDLK_RALT: case SDLK_RMETA: c64_key = MATRIX(7,5); break; |
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case SDLK_UP: c64_key = MATRIX(0,7)| 0x80; break; |
356 |
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case SDLK_DOWN: c64_key = MATRIX(0,7); break; |
357 |
|
|
case SDLK_LEFT: c64_key = MATRIX(0,2) | 0x80; break; |
358 |
|
|
case SDLK_RIGHT: c64_key = MATRIX(0,2); break; |
359 |
|
|
|
360 |
|
|
case SDLK_F1: c64_key = MATRIX(0,4); break; |
361 |
|
|
case SDLK_F2: c64_key = MATRIX(0,4) | 0x80; break; |
362 |
|
|
case SDLK_F3: c64_key = MATRIX(0,5); break; |
363 |
|
|
case SDLK_F4: c64_key = MATRIX(0,5) | 0x80; break; |
364 |
|
|
case SDLK_F5: c64_key = MATRIX(0,6); break; |
365 |
|
|
case SDLK_F6: c64_key = MATRIX(0,6) | 0x80; break; |
366 |
|
|
case SDLK_F7: c64_key = MATRIX(0,3); break; |
367 |
|
|
case SDLK_F8: c64_key = MATRIX(0,3) | 0x80; break; |
368 |
|
|
|
369 |
|
|
case SDLK_KP0: case SDLK_KP5: c64_key = 0x10 | 0x40; break; |
370 |
|
|
case SDLK_KP1: c64_key = 0x06 | 0x40; break; |
371 |
|
|
case SDLK_KP2: c64_key = 0x02 | 0x40; break; |
372 |
|
|
case SDLK_KP3: c64_key = 0x0a | 0x40; break; |
373 |
|
|
case SDLK_KP4: c64_key = 0x04 | 0x40; break; |
374 |
|
|
case SDLK_KP6: c64_key = 0x08 | 0x40; break; |
375 |
|
|
case SDLK_KP7: c64_key = 0x05 | 0x40; break; |
376 |
|
|
case SDLK_KP8: c64_key = 0x01 | 0x40; break; |
377 |
|
|
case SDLK_KP9: c64_key = 0x09 | 0x40; break; |
378 |
|
|
|
379 |
|
|
case SDLK_KP_DIVIDE: c64_key = MATRIX(6,7); break; |
380 |
|
|
case SDLK_KP_ENTER: c64_key = MATRIX(0,1); break; |
381 |
|
|
default: break; |
382 |
|
|
} |
383 |
|
|
|
384 |
|
|
if (c64_key < 0) |
385 |
|
|
return; |
386 |
|
|
|
387 |
|
|
// Handle joystick emulation |
388 |
|
|
if (c64_key & 0x40) { |
389 |
|
|
c64_key &= 0x1f; |
390 |
|
|
if (key_up) |
391 |
|
|
*joystick |= c64_key; |
392 |
|
|
else |
393 |
|
|
*joystick &= ~c64_key; |
394 |
|
|
return; |
395 |
|
|
} |
396 |
|
|
|
397 |
|
|
// Handle other keys |
398 |
|
|
bool shifted = c64_key & 0x80; |
399 |
|
|
int c64_byte = (c64_key >> 3) & 7; |
400 |
|
|
int c64_bit = c64_key & 7; |
401 |
|
|
if (key_up) { |
402 |
|
|
if (shifted) { |
403 |
|
|
key_matrix[6] |= 0x10; |
404 |
|
|
rev_matrix[4] |= 0x40; |
405 |
|
|
} |
406 |
|
|
key_matrix[c64_byte] |= (1 << c64_bit); |
407 |
|
|
rev_matrix[c64_bit] |= (1 << c64_byte); |
408 |
|
|
} else { |
409 |
|
|
if (shifted) { |
410 |
|
|
key_matrix[6] &= 0xef; |
411 |
|
|
rev_matrix[4] &= 0xbf; |
412 |
|
|
} |
413 |
|
|
key_matrix[c64_byte] &= ~(1 << c64_bit); |
414 |
|
|
rev_matrix[c64_bit] &= ~(1 << c64_byte); |
415 |
|
|
} |
416 |
|
|
} |
417 |
|
|
|
418 |
|
|
void C64Display::PollKeyboard(uint8 *key_matrix, uint8 *rev_matrix, uint8 *joystick) |
419 |
|
|
{ |
420 |
|
|
SDL_Event event; |
421 |
|
|
while (SDL_PollEvent(&event)) { |
422 |
|
|
switch (event.type) { |
423 |
|
|
|
424 |
|
|
// Key pressed |
425 |
|
|
case SDL_KEYDOWN: |
426 |
|
|
switch (event.key.keysym.sym) { |
427 |
|
|
|
428 |
|
|
case SDLK_F9: // F9: Invoke SAM |
429 |
|
|
SAM(TheC64); |
430 |
|
|
break; |
431 |
|
|
|
432 |
|
|
case SDLK_F10: // F10: Quit |
433 |
|
|
quit_requested = true; |
434 |
|
|
break; |
435 |
|
|
|
436 |
|
|
case SDLK_F11: // F11: NMI (Restore) |
437 |
|
|
TheC64->NMI(); |
438 |
|
|
break; |
439 |
|
|
|
440 |
|
|
case SDLK_F12: // F12: Reset |
441 |
|
|
TheC64->Reset(); |
442 |
|
|
break; |
443 |
|
|
|
444 |
|
|
case SDLK_NUMLOCK: |
445 |
|
|
num_locked = true; |
446 |
|
|
break; |
447 |
|
|
|
448 |
|
|
case SDLK_KP_PLUS: // '+' on keypad: Increase SkipFrames |
449 |
|
|
ThePrefs.SkipFrames++; |
450 |
|
|
break; |
451 |
|
|
|
452 |
|
|
case SDLK_KP_MINUS: // '-' on keypad: Decrease SkipFrames |
453 |
|
|
if (ThePrefs.SkipFrames > 1) |
454 |
|
|
ThePrefs.SkipFrames--; |
455 |
|
|
break; |
456 |
|
|
|
457 |
|
|
case SDLK_KP_MULTIPLY: // '*' on keypad: Toggle speed limiter |
458 |
|
|
ThePrefs.LimitSpeed = !ThePrefs.LimitSpeed; |
459 |
|
|
break; |
460 |
|
|
|
461 |
|
|
default: |
462 |
|
|
translate_key(event.key.keysym.sym, false, key_matrix, rev_matrix, joystick); |
463 |
|
|
break; |
464 |
|
|
} |
465 |
|
|
break; |
466 |
|
|
|
467 |
|
|
// Key released |
468 |
|
|
case SDL_KEYUP: |
469 |
|
|
if (event.key.keysym.sym == SDLK_NUMLOCK) |
470 |
|
|
num_locked = false; |
471 |
|
|
else |
472 |
|
|
translate_key(event.key.keysym.sym, true, key_matrix, rev_matrix, joystick); |
473 |
|
|
break; |
474 |
|
|
|
475 |
|
|
// Quit Frodo |
476 |
|
|
case SDL_QUIT: |
477 |
|
|
quit_requested = true; |
478 |
|
|
break; |
479 |
|
|
} |
480 |
|
|
} |
481 |
|
|
} |
482 |
|
|
|
483 |
|
|
|
484 |
|
|
/* |
485 |
|
|
* Check if NumLock is down (for switching the joystick keyboard emulation) |
486 |
|
|
*/ |
487 |
|
|
|
488 |
|
|
bool C64Display::NumLock(void) |
489 |
|
|
{ |
490 |
|
|
return num_locked; |
491 |
|
|
} |
492 |
|
|
|
493 |
|
|
|
494 |
|
|
/* |
495 |
|
|
* Allocate C64 colors |
496 |
|
|
*/ |
497 |
|
|
|
498 |
|
|
void C64Display::InitColors(uint8 *colors) |
499 |
|
|
{ |
500 |
|
|
SDL_Color palette[PALETTE_SIZE]; |
501 |
|
|
for (int i=0; i<16; i++) { |
502 |
|
|
palette[i].r = palette_red[i]; |
503 |
|
|
palette[i].g = palette_green[i]; |
504 |
|
|
palette[i].b = palette_blue[i]; |
505 |
|
|
} |
506 |
|
|
palette[fill_gray].r = palette[fill_gray].g = palette[fill_gray].b = 0xd0; |
507 |
|
|
palette[shine_gray].r = palette[shine_gray].g = palette[shine_gray].b = 0xf0; |
508 |
|
|
palette[shadow_gray].r = palette[shadow_gray].g = palette[shadow_gray].b = 0x80; |
509 |
|
|
palette[red].r = 0xf0; |
510 |
|
|
palette[red].g = palette[red].b = 0; |
511 |
|
|
palette[green].g = 0xf0; |
512 |
|
|
palette[green].r = palette[green].b = 0; |
513 |
|
|
SDL_SetColors(screen, palette, 0, PALETTE_SIZE); |
514 |
|
|
|
515 |
|
|
for (int i=0; i<256; i++) |
516 |
|
|
colors[i] = i & 0x0f; |
517 |
|
|
} |
518 |
|
|
|
519 |
|
|
|
520 |
|
|
/* |
521 |
|
|
* Show a requester (error message) |
522 |
|
|
*/ |
523 |
|
|
|
524 |
|
|
long int ShowRequester(char *a,char *b,char *) |
525 |
|
|
{ |
526 |
|
|
printf("%s: %s\n", a, b); |
527 |
|
|
return 1; |
528 |
|
|
} |