mirror of
https://github.com/Oibaf66/frodo-wii.git
synced 2024-11-22 19:39:24 +01:00
545 lines
13 KiB
OpenEdge ABL
545 lines
13 KiB
OpenEdge ABL
/*
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* Display_SDL.i - 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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#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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SDL_Surface *screen = NULL;
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SDL_Surface *real_screen = NULL;
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// Keyboard
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static bool num_locked = false;
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#if defined(DO_ERROR_BLINK)
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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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#endif
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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 ; * <EFBFBD>
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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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Uint32 rmask, gmask, bmask, amask;
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/* SDL interprets each pixel as a 32-bit number, so our masks must depend
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on the endianness (byte order) of the machine */
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#if SDL_BYTEORDER == SDL_BIG_ENDIAN
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rmask = 0xff000000;
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gmask = 0x00ff0000;
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bmask = 0x0000ff00;
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amask = 0x000000ff;
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#else
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rmask = 0x000000ff;
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gmask = 0x0000ff00;
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bmask = 0x00ff0000;
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amask = 0xff000000;
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#endif
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// Open window
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SDL_WM_SetCaption(VERSION_STRING, "Frodo");
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SDL_ShowCursor(SDL_DISABLE);
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screen = SDL_CreateRGBSurface(SDL_SWSURFACE, DISPLAY_X, DISPLAY_Y + 17, 8,
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rmask, gmask, bmask, amask);
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real_screen = SDL_SetVideoMode(FULL_DISPLAY_X, FULL_DISPLAY_Y, 8,
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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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#if defined(DO_ERROR_BLINK)
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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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#endif
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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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// Update display
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SDL_Rect srcrect, dstrect;
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if (ThePrefs.DisplayOption == 0) {
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const int x_border = (DISPLAY_X - FULL_DISPLAY_X / 2) / 2;
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const int y_border = (DISPLAY_Y - FULL_DISPLAY_Y / 2) / 2;
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/* Center, double size */
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srcrect = (SDL_Rect){x_border, y_border, FULL_DISPLAY_X / 2, FULL_DISPLAY_Y / 2};
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dstrect = (SDL_Rect){0, 0, FULL_DISPLAY_X, FULL_DISPLAY_Y};
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}
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else {
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/* Stretch */
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srcrect = (SDL_Rect){0, 0, DISPLAY_X, DISPLAY_Y};
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dstrect = (SDL_Rect){0, 0, FULL_DISPLAY_X, FULL_DISPLAY_Y};
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}
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SDL_SoftStretch(screen, &srcrect, real_screen, &dstrect);
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SDL_Flip(real_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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#if defined(DO_ERROR_BLINK)
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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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#endif
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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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void C64Display::FakeKeyPress(int kc, bool shift, uint8 *CIA_key_matrix,
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uint8 *CIA_rev_matrix)
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{
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// Clear matrices
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for (int i = 0; i < 8; i ++)
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{
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CIA_key_matrix[i] = 0xFF;
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CIA_rev_matrix[i] = 0xFF;
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}
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if (shift)
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{
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CIA_key_matrix[6] &= 0xef;
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CIA_rev_matrix[4] &= 0xbf;
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}
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if (kc != -1)
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{
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int c64_byte, c64_bit, shifted;
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c64_byte = kc >> 3;
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c64_bit = kc & 7;
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shifted = kc & 128;
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c64_byte &= 7;
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if (shifted)
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{
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CIA_key_matrix[6] &= 0xef;
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CIA_rev_matrix[4] &= 0xbf;
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}
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CIA_key_matrix[c64_byte] &= ~(1 << c64_bit);
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CIA_rev_matrix[c64_bit] &= ~(1 << c64_byte);
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}
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}
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void C64Display::UpdateKeyMatrix(int c64_key, bool key_up, uint8 *key_matrix, uint8 *rev_matrix)
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{
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bool shifted = c64_key & 0x80;
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int c64_byte = (c64_key >> 3) & 7;
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int c64_bit = c64_key & 7;
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if (key_up) {
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if (shifted) {
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key_matrix[6] |= 0x10;
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rev_matrix[4] |= 0x40;
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}
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key_matrix[c64_byte] |= (1 << c64_bit);
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rev_matrix[c64_bit] |= (1 << c64_byte);
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} else {
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if (shifted) {
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key_matrix[6] &= 0xef;
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rev_matrix[4] &= 0xbf;
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}
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key_matrix[c64_byte] &= ~(1 << c64_bit);
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rev_matrix[c64_bit] &= ~(1 << c64_byte);
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}
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}
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/*
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* Poll the keyboard
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*/
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void C64Display::TranslateKey(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;
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case SDLK_DOWN: c64_key = MATRIX(0,7); break;
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case SDLK_LEFT: c64_key = MATRIX(0,2) | 0x80; break;
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case SDLK_RIGHT: c64_key = MATRIX(0,2); break;
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case SDLK_F1: c64_key = MATRIX(0,4); break;
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case SDLK_F2: c64_key = MATRIX(0,4) | 0x80; break;
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case SDLK_F3: c64_key = MATRIX(0,5); break;
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case SDLK_F4: c64_key = MATRIX(0,5) | 0x80; break;
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case SDLK_F5: c64_key = MATRIX(0,6); break;
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case SDLK_F6: c64_key = MATRIX(0,6) | 0x80; break;
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case SDLK_F7: c64_key = MATRIX(0,3); break;
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case SDLK_F8: c64_key = MATRIX(0,3) | 0x80; break;
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case SDLK_KP0: case SDLK_KP5: c64_key = 0x10 | 0x40; break;
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case SDLK_KP1: c64_key = 0x06 | 0x40; break;
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case SDLK_KP2: c64_key = 0x02 | 0x40; break;
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case SDLK_KP3: c64_key = 0x0a | 0x40; break;
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case SDLK_KP4: c64_key = 0x04 | 0x40; break;
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case SDLK_KP6: c64_key = 0x08 | 0x40; break;
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case SDLK_KP7: c64_key = 0x05 | 0x40; break;
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case SDLK_KP8: c64_key = 0x01 | 0x40; break;
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case SDLK_KP9: c64_key = 0x09 | 0x40; break;
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case SDLK_KP_DIVIDE: c64_key = MATRIX(6,7); break;
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case SDLK_KP_ENTER: c64_key = MATRIX(0,1); break;
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default: break;
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}
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if (c64_key < 0)
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return;
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// Handle joystick emulation
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if (c64_key & 0x40) {
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c64_key &= 0x1f;
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if (key_up)
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*joystick |= c64_key;
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else
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*joystick &= ~c64_key;
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return;
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}
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this->UpdateKeyMatrix(c64_key, key_up, key_matrix, rev_matrix);
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}
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void C64Display::PollKeyboard(uint8 *key_matrix, uint8 *rev_matrix, uint8 *joystick)
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{
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SDL_Event event;
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while (SDL_PollEvent(&event)) {
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switch (event.type) {
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// Key pressed
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case SDL_KEYDOWN:
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switch (event.key.keysym.sym) {
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case SDLK_F9: // F9: Invoke SAM
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SAM(TheC64);
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break;
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case SDLK_F10: // F10: Quit
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quit_requested = true;
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break;
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case SDLK_F11: // F11: NMI (Restore)
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TheC64->NMI();
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break;
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case SDLK_F12: // F12: Reset
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TheC64->Reset();
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break;
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case SDLK_HOME: // Home: Pause and enter menu
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TheC64->enter_menu();
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break;
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case SDLK_NUMLOCK:
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num_locked = true;
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break;
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case SDLK_KP_PLUS: // '+' on keypad: Increase SkipFrames
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ThePrefs.SkipFrames++;
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break;
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case SDLK_KP_MINUS: // '-' on keypad: Decrease SkipFrames
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if (ThePrefs.SkipFrames > 1)
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ThePrefs.SkipFrames--;
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break;
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case SDLK_KP_MULTIPLY: // '*' on keypad: Toggle speed limiter
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ThePrefs.LimitSpeed = !ThePrefs.LimitSpeed;
|
||
break;
|
||
|
||
default:
|
||
TranslateKey(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
|
||
TranslateKey(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;
|
||
}
|
||
|
||
|
||
/*
|
||
* 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);
|
||
SDL_SetColors(real_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;
|
||
}
|