-/* xscreensaver, Copyright (c) 1998-2004 Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver, Copyright (c) 1998-2010 Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
*/
#include <math.h>
-#include "screenhack.h"
+#include "screenhackI.h"
#include "apple2.h"
-#include <time.h>
-#include <sys/time.h>
-#include <X11/Intrinsic.h>
#ifdef HAVE_XSHM_EXTENSION
#include "xshm.h"
#define DEBUG
-extern XtAppContext app;
-
/*
* Implementation notes
*
a2_scroll(apple2_state_t *st)
{
int i;
- st->textlines[st->cursy][st->cursx] ^= 0xc0; /* turn off cursor */
+ st->textlines[st->cursy][st->cursx] |= 0xc0; /* turn off cursor */
+
for (i=0; i<23; i++) {
memcpy(st->textlines[i],st->textlines[i+1],40);
}
memset(st->textlines[23],0xe0,40);
- st->textlines[st->cursy][st->cursx] ^= 0xc0; /* turn cursor back on */
}
static void
a2_goto(apple2_state_t *st, int r, int c)
{
if (r > 23) r = 23;
- if (c > 39) r = 39;
+ if (c > 39) c = 39;
st->textlines[st->cursy][st->cursx] |= 0xc0; /* turn off blink */
st->cursy=r;
st->cursx=c;
if (y<0 || y>=192 || x<0 || x>=280) return;
for (run=0; run<2 && x<280; run++) {
- u_char *vidbyte = &st->hireslines[y][x/7];
- u_char whichbit=1<<(x%7);
+ unsigned char *vidbyte = &st->hireslines[y][x/7];
+ unsigned char whichbit=1<<(x%7);
int masked_bit;
*vidbyte = (*vidbyte & 0x7f) | highbit;
a2_plot(apple2_state_t *st, int color, int x, int y)
{
int textrow=y/2;
- u_char byte;
+ unsigned char byte;
if (x<0 || x>=40 || y<0 || y>=48) return;
case 1:
n=random()%500;
for (i=0; i<n && addr<0x4000; i++) {
- u_char rb=((random()%6==0 ? 0 : random()%16) |
+ unsigned char rb=((random()%6==0 ? 0 : random()%16) |
((random()%5==0 ? 0 : random()%16)<<4));
a2_poke(st, addr++, rb);
}
}
+#if 1 /* jwz: since MacOS doesn't have "6x10", I dumped this font to an XBM...
+ */
+
+#include "images/apple2font.xbm"
+
+static void
+a2_make_font(apple2_sim_t *sim)
+{
+ Pixmap text_pm = XCreatePixmapFromBitmapData (sim->dpy, sim->window,
+ (char *) apple2_font_bits,
+ apple2_font_width,
+ apple2_font_height,
+ 1, 0, 1);
+ if (apple2_font_width != 64*7) abort();
+ if (apple2_font_height != 8) abort();
+ sim->text_im = XGetImage(sim->dpy, text_pm, 0, 0,
+ apple2_font_width, apple2_font_height,
+ ~0L, ZPixmap);
+ XFreePixmap(sim->dpy, text_pm);
+}
+
+#else /* 0 */
+
/* This table lists fixes for characters that differ from the standard 6x10
font. Each encodes a pixel, as (charindex*7 + x) + (y<<10) + (value<<15)
where value is 0 for white and 1 for black. */
-static unsigned short a2_fixfont[] = {
+static const unsigned short a2_fixfont[] = {
/* Fix $ */ 0x8421, 0x941d,
/* Fix % */ 0x8024, 0x0028, 0x8425, 0x0426, 0x0825, 0x1027, 0x1426, 0x9427,
0x1824, 0x9828,
abort();
}
- text_pm=XCreatePixmap(sim->dpy, sim->window, 64*7, 8, sim->dec->xgwa.depth);
+ text_pm=XCreatePixmap(sim->dpy, sim->window, 64*7, 8, 1);
memset(&gcv, 0, sizeof(gcv));
gcv.foreground=1;
XDrawString(sim->dpy, text_pm, gc, x, y, &c, 1);
}
}
+
+# if 0
+ for (i=0; a2_fixfont[i]; i++) {
+ XSetForeground (sim->dpy, gc, (a2_fixfont[i]>>15)&1);
+ XDrawPoint(sim->dpy, text_pm, gc, a2_fixfont[i]&0x3ff,
+ (a2_fixfont[i]>>10)&0xf);
+ }
+ XWriteBitmapFile(sim->dpy, "/tmp/a2font.xbm", text_pm, 64*7, 8, -1, -1);
+# endif
+
sim->text_im = XGetImage(sim->dpy, text_pm, 0, 0, 64*7, 8, ~0L, ZPixmap);
XFreeGC(sim->dpy, gc);
XFreePixmap(sim->dpy, text_pm);
}
}
+#endif /* 0 */
-void
-apple2(Display *dpy, Window window, int delay,
- void (*controller)(apple2_sim_t *sim,
- int *stepno,
- double *next_actiontime))
+apple2_sim_t *
+apple2_start(Display *dpy, Window window, int delay,
+ void (*controller)(apple2_sim_t *sim,
+ int *stepno,
+ double *next_actiontime))
{
- int i,textrow,row,col,stepno;
- int c;
- double next_actiontime;
apple2_sim_t *sim;
- sim=(apple2_sim_t *)calloc(1,sizeof(apple2_state_t));
+ sim=(apple2_sim_t *)calloc(1,sizeof(apple2_sim_t));
sim->dpy = dpy;
sim->window = window;
sim->delay = delay;
+ sim->controller = controller;
sim->st = (apple2_state_t *)calloc(1,sizeof(apple2_state_t));
sim->dec = analogtv_allocate(dpy, window);
- sim->dec->event_handler = screenhack_handle_event;
sim->inp = analogtv_input_allocate();
sim->reception.input = sim->inp;
a2_make_font(sim);
- stepno=0;
+ sim->stepno=0;
a2_goto(sim->st,23,0);
if (random()%2==0) sim->basetime_tv.tv_sec -= 1; /* random blink phase */
- next_actiontime=0.0;
+ sim->next_actiontime=0.0;
sim->curtime=0.0;
- next_actiontime=sim->curtime;
- (*controller)(sim, &stepno, &next_actiontime);
+ sim->next_actiontime=sim->curtime;
+ sim->controller (sim, &sim->stepno, &sim->next_actiontime);
# ifdef GETTIMEOFDAY_TWO_ARGS
gettimeofday(&sim->basetime_tv, NULL);
gettimeofday(&sim->basetime_tv);
# endif
- while (1) {
+ return sim;
+}
+
+int
+apple2_one_frame (apple2_sim_t *sim)
+{
double blinkphase;
+ int i;
+ int textrow;
+
+ if (sim->stepno==A2CONTROLLER_DONE)
+ goto DONE; /* when caller says we're done, be done, dammit! */
{
struct timeval curtime_tv;
sim->dec->powerup=sim->curtime;
}
- if (analogtv_handle_events(sim->dec)) {
- sim->typing=NULL;
- sim->printing=NULL;
- stepno=A2CONTROLLER_FREE;
- next_actiontime = sim->curtime;
- (*controller)(sim, &stepno, &next_actiontime);
- stepno=0;
- sim->controller_data=NULL;
- sim->st->gr_mode=0;
- continue;
- }
-
blinkphase=sim->curtime/0.8;
/* The blinking rate was controlled by 555 timer with a resistor/capacitor
/* For every row with blinking text, set the changed flag. This basically
works great except with random screen garbage in text mode, when we
end up redrawing the whole screen every second */
+ int row, col;
for (row=(sim->st->gr_mode ? 20 : 0); row<24; row++) {
for (col=0; col<40; col++) {
- c=sim->st->textlines[row][col];
+ int c=sim->st->textlines[row][col];
if ((c & 0xc0) == 0x40) {
downcounter=4;
break;
}
}
+ if (sim->curtime >= sim->delay)
+ sim->stepno = A2CONTROLLER_DONE;
+
if (sim->printing) {
int nlcnt=0;
while (*sim->printing) {
}
if (!*sim->printing) sim->printing=NULL;
}
- else if (sim->curtime >= next_actiontime) {
+ else if (sim->curtime >= sim->next_actiontime) {
if (sim->typing) {
int c;
/* If we're in the midst of typing a string, emit a character with
random timing. */
- c =*sim->typing++;
+ c =*sim->typing;
if (c==0) {
sim->typing=NULL;
}
else {
+ sim->typing++;
a2_printc(sim->st, c);
if (c=='\r' || c=='\n') {
- next_actiontime = sim->curtime;
+ sim->next_actiontime = sim->curtime;
}
else if (c==010) {
- next_actiontime = sim->curtime + 0.1;
+ sim->next_actiontime = sim->curtime + 0.1;
}
else {
- next_actiontime = (sim->curtime +
+ sim->next_actiontime = (sim->curtime +
(((random()%1000)*0.001 + 0.3) *
sim->typing_rate));
}
}
} else {
- next_actiontime=sim->curtime;
+ sim->next_actiontime = sim->curtime;
+
+ sim->controller (sim, &sim->stepno, &sim->next_actiontime);
- (*controller)(sim, &stepno, &next_actiontime);
- if (stepno==A2CONTROLLER_DONE) goto finished;
+ if (sim->stepno==A2CONTROLLER_DONE) {
+
+ DONE:
+ sim->stepno=A2CONTROLLER_FREE;
+ sim->controller (sim, &sim->stepno, &sim->next_actiontime);
+ /* if stepno is changed, return 1 */
+ if (sim->stepno != A2CONTROLLER_FREE)
+ return 1;
+
+ XClearWindow(sim->dpy, sim->window);
+
+ /* free sim */
+ /* This is from a2_make_font */
+ free(sim->text_im->data);
+ sim->text_im->data = 0;
+ XDestroyImage(sim->text_im);
+
+ /* And free else */
+ analogtv_release(sim->dec);
+ free(sim->st);
+ free(sim->inp);
+ free(sim);
+
+ return 0;
+ }
}
}
analogtv_setup_frame(sim->dec);
for (textrow=0; textrow<24; textrow++) {
+ int row;
for (row=textrow*8; row<textrow*8+8; row++) {
/* First we generate the pattern that the video circuitry shifts out
and even bytes have different color spaces. So, pattern[0..600]
gets the dots for one scan line. */
- char *pp=&sim->inp->signal[row+ANALOGTV_TOP+4][ANALOGTV_PIC_START+100];
+ signed char *pp=&sim->inp->signal[row+ANALOGTV_TOP+4][ANALOGTV_PIC_START+100];
if ((sim->st->gr_mode&A2_GR_HIRES) &&
(row<160 || (sim->st->gr_mode&A2_GR_FULL))) {
+ int col;
/* Emulate the mysterious pink line, due to a bit getting
stuck in a shift register between the end of the last
}
for (col=0; col<40; col++) {
- u_char b=sim->st->hireslines[row][col];
+ unsigned char b=sim->st->hireslines[row][col];
int shift=(b&0x80)?0:1;
/* Each of the low 7 bits in hires mode corresponded to 2 dot
}
else if ((sim->st->gr_mode&A2_GR_LORES) &&
(row<160 || (sim->st->gr_mode&A2_GR_FULL))) {
+ int col;
for (col=0; col<40; col++) {
- u_char nib=((sim->st->textlines[textrow][col] >> (((row/4)&1)*4))
+ unsigned char nib=((sim->st->textlines[textrow][col] >> (((row/4)&1)*4))
& 0xf);
/* The low or high nybble was shifted out one bit at a time. */
for (i=0; i<14; i++) {
}
}
else {
+ int col;
for (col=0; col<40; col++) {
int rev;
- c=sim->st->textlines[textrow][col]&0xff;
+ int c=sim->st->textlines[textrow][col]&0xff;
/* hi bits control inverse/blink as follows:
0x00: inverse
0x40: blink
}
}
}
- analogtv_init_signal(sim->dec, 0.02);
analogtv_reception_update(&sim->reception);
- analogtv_add_signal(sim->dec, &sim->reception);
- analogtv_draw(sim->dec);
- }
-
- finished:
-
- stepno=A2CONTROLLER_FREE;
- (*controller)(sim, &stepno, &next_actiontime);
-
- XSync(sim->dpy, False);
- XClearWindow(sim->dpy, sim->window);
+ {
+ const analogtv_reception *rec = &sim->reception;
+ analogtv_draw(sim->dec, 0.02, &rec, 1);
+ }
+
+ return 1;
}
+
+#if 0
void
a2controller_test(apple2_sim_t *sim, int *stepno, double *next_actiontime)
{
break;
}
}
+#endif
projects / xscreensaver / blobdiff