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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/*
* This code is based on the original source code of Lord Avalot d'Argent version 1.3.
* Copyright (c) 1994-1995 Mike, Mark and Thomas Thurman.
*/
#include "graph.h"
/*#include "Crt.h"*/
namespace Avalanche {
array<0, 3, palettetype> fxpal;
void load() {
byte a0 /*absolute $A000:800*/;
byte bit;
untyped_file f;
assign(f, "preview2.avd");
reset(f, 1);
seek(f, 177);
for (bit = 0; bit <= 3; bit ++) {
port[0x3c4] = 2;
port[0x3ce] = 4;
port[0x3c5] = 1 << bit;
port[0x3cf] = bit;
blockread(f, a0, 12080);
}
close(f);
bit = getpixel(0, 0);
settextjustify(1, 1);
setcolor(3);
outtextxy(320, 166, "...This is a preview of things to come...");
setcolor(14);
outtextxy(320, 176, "AVAROID");
outtextxy(320, 183, "(a space so dizzy)");
setcolor(9);
outtextxy(320, 194, "the next Avvy adventure-- in 256 colours.");
setcolor(7);
outtextxy(590, 195, "Any key...");
}
void setup() {
integer gd, gm;
palettetype p;
if (paramstr(1) != "jsb") exit(255);
gd = 3;
gm = 0;
initgraph(gd, gm, "");
getpalette(fxpal[0]);
fillchar(p.colors, sizeof(p.colors), '\0'); /* Blank out the screen. */
p.size = 16;
setallpalette(p);
}
void wait() {
word w;
char r;
w = 0;
do {
delay(1);
w += 1;
} while (!(keypressed() || (w == 15000)));
while (keypressed()) r = readkey(); /* Keyboard sink. */
}
void show(byte n) {
setallpalette(fxpal[n]);
delay(55);
}
shortint fades(shortint x) {
byte r, g, b;
shortint fades_result;
r = x / 16;
x = x % 16;
g = x / 4;
b = x % 4;
if (r > 0) r -= 1;
if (g > 0) g -= 1;
if (b > 0) b -= 1;
fades_result = (16 * r + 4 * g + b);
/* fades:=x-1;*/
return fades_result;
}
void dawn();
static void calc(byte n) {
byte fv;
fxpal[n] = fxpal[n - 1];
for (fv = 1; fv <= fxpal[n].size - 1; fv ++)
fxpal[n].colors[fv] = fades(fxpal[n].colors[fv]);
}
void dawn() {
byte fv;
for (fv = 1; fv <= 3; fv ++) calc(fv);
for (fv = 3; fv >= 0; fv --) show(fv);
}
void dusk() {
byte fv;
for (fv = 1; fv <= 3; fv ++) show(fv);
}
int main(int argc, const char *argv[]) {
pio_initialize(argc, argv);
setup();
load();
dawn();
wait();
dusk();
closegraph();
return EXIT_SUCCESS;
}
} // End of namespace Avalanche.
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