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xrick2gs/src/sysvid.c
dwsJason 69a5982d6b import: xrick-021212 from BigOrno
2018-07-14 11:42:18 -04:00

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/*
* xrick/src/sysvid.c
*
* Copyright (C) 1998-2002 BigOrno (bigorno@bigorno.net). All rights reserved.
*
* The use and distribution terms for this software are contained in the file
* named README, which can be found in the root of this distribution. By
* using this software in any fashion, you are agreeing to be bound by the
* terms of this license.
*
* You must not remove this notice, or any other, from this software.
*/
#include <stdlib.h> /* malloc */
#include <SDL.h>
#include "system.h"
#include "game.h"
#include "img.h"
#include "debug.h"
#ifdef __MSVC__
#include <memory.h> /* memset */
#endif
U8 *sysvid_fb; /* frame buffer */
rect_t SCREENRECT = {0, 0, SYSVID_WIDTH, SYSVID_HEIGHT, NULL}; /* whole fb */
static SDL_Color palette[256];
static SDL_Surface *screen;
static U32 videoFlags;
static U8 zoom = SYSVID_ZOOM; /* actual zoom level */
static U8 szoom = 0; /* saved zoom level */
static U8 fszoom = 0; /* fullscreen zoom level */
#include "img_icon.e"
/*
* color tables
*/
#ifdef GFXPC
static U8 RED[] = { 0x00, 0x50, 0xf0, 0xf0, 0x00, 0x50, 0xf0, 0xf0 };
static U8 GREEN[] = { 0x00, 0xf8, 0x50, 0xf8, 0x00, 0xf8, 0x50, 0xf8 };
static U8 BLUE[] = { 0x00, 0x50, 0x50, 0x50, 0x00, 0xf8, 0xf8, 0xf8 };
#endif
#ifdef GFXST
static U8 RED[] = { 0x00, 0xd8, 0xb0, 0xf8,
0x20, 0x00, 0x00, 0x20,
0x48, 0x48, 0x90, 0xd8,
0x48, 0x68, 0x90, 0xb0,
/* cheat colors */
0x50, 0xe0, 0xc8, 0xf8,
0x68, 0x50, 0x50, 0x68,
0x80, 0x80, 0xb0, 0xe0,
0x80, 0x98, 0xb0, 0xc8
};
static U8 GREEN[] = { 0x00, 0x00, 0x6c, 0x90,
0x24, 0x48, 0x6c, 0x48,
0x6c, 0x24, 0x48, 0x6c,
0x48, 0x6c, 0x90, 0xb4,
/* cheat colors */
0x54, 0x54, 0x9c, 0xb4,
0x6c, 0x84, 0x9c, 0x84,
0x9c, 0x6c, 0x84, 0x9c,
0x84, 0x9c, 0xb4, 0xcc
};
static U8 BLUE[] = { 0x00, 0x00, 0x68, 0x68,
0x20, 0xb0, 0xd8, 0x00,
0x20, 0x00, 0x00, 0x00,
0x48, 0x68, 0x90, 0xb0,
/* cheat colors */
0x50, 0x50, 0x98, 0x98,
0x68, 0xc8, 0xe0, 0x50,
0x68, 0x50, 0x50, 0x50,
0x80, 0x98, 0xb0, 0xc8};
#endif
/*
* Initialize screen
*/
static
SDL_Surface *initScreen(U16 w, U16 h, U8 bpp, U32 flags)
{
return SDL_SetVideoMode(w, h, bpp, flags);
}
void
sysvid_setPalette(img_color_t *pal, U16 n)
{
U16 i;
for (i = 0; i < n; i++) {
palette[i].r = pal[i].r;
palette[i].g = pal[i].g;
palette[i].b = pal[i].b;
}
SDL_SetColors(screen, (SDL_Color *)&palette, 0, n);
}
void
sysvid_restorePalette()
{
SDL_SetColors(screen, (SDL_Color *)&palette, 0, 256);
}
void
sysvid_setGamePalette()
{
U8 i;
img_color_t pal[256];
for (i = 0; i < 32; ++i) {
pal[i].r = RED[i];
pal[i].g = GREEN[i];
pal[i].b = BLUE[i];
}
sysvid_setPalette(pal, 32);
}
/*
* Initialize video modes
*/
void
sysvid_chkvm(void)
{
SDL_Rect **modes;
U8 i, mode = 0;
IFDEBUG_VIDEO(sys_printf("xrick/video: checking video modes\n"););
modes = SDL_ListModes(NULL, videoFlags|SDL_FULLSCREEN);
if (modes == (SDL_Rect **)0)
sys_panic("xrick/video: SDL can not find an appropriate video mode\n");
if (modes == (SDL_Rect **)-1) {
/* can do what you want, everything is possible */
IFDEBUG_VIDEO(sys_printf("xrick/video: SDL says any video mode is OK\n"););
fszoom = 1;
}
else {
IFDEBUG_VIDEO(sys_printf("xrick/video: SDL says, use these modes:\n"););
for (i = 0; modes[i]; i++) {
IFDEBUG_VIDEO(sys_printf(" %dx%d\n", modes[i]->w, modes[i]->h););
if (modes[i]->w <= modes[mode]->w && modes[i]->w >= SYSVID_WIDTH &&
modes[i]->h * SYSVID_WIDTH >= modes[i]->w * SYSVID_HEIGHT) {
mode = i;
fszoom = modes[mode]->w / SYSVID_WIDTH;
}
}
if (fszoom != 0) {
IFDEBUG_VIDEO(
sys_printf("xrick/video: fullscreen at %dx%d w/zoom=%d\n",
modes[mode]->w, modes[mode]->h, fszoom);
);
}
else {
IFDEBUG_VIDEO(
sys_printf("xrick/video: can not compute fullscreen zoom, use 1\n");
);
fszoom = 1;
}
}
}
/*
* Initialise video
*/
void
sysvid_init(void)
{
SDL_Surface *s;
U8 *mask, tpix;
U32 len, i;
IFDEBUG_VIDEO(printf("xrick/video: start\n"););
/* SDL */
if (SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER) < 0)
sys_panic("xrick/video: could not init SDL\n");
/* various WM stuff */
SDL_WM_SetCaption("xrick", "xrick");
SDL_ShowCursor(SDL_DISABLE);
s = SDL_CreateRGBSurfaceFrom(IMG_ICON->pixels, IMG_ICON->w, IMG_ICON->h, 8, IMG_ICON->w, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff);
SDL_SetColors(s, (SDL_Color *)IMG_ICON->colors, 0, IMG_ICON->ncolors);
tpix = *(IMG_ICON->pixels);
IFDEBUG_VIDEO(
sys_printf("xrick/video: icon is %dx%d\n",
IMG_ICON->w, IMG_ICON->h);
sys_printf("xrick/video: icon transp. color is #%d (%d,%d,%d)\n", tpix,
IMG_ICON->colors[tpix].r,
IMG_ICON->colors[tpix].g,
IMG_ICON->colors[tpix].b);
);
/*
* old dirty stuff to implement transparency. SetColorKey does it
* on Windows w/out problems. Linux? FIXME!
len = IMG_ICON->w * IMG_ICON->h;
mask = (U8 *)malloc(len/8);
memset(mask, 0, len/8);
for (i = 0; i < len; i++)
if (IMG_ICON->pixels[i] != tpix) mask[i/8] |= (0x80 >> (i%8));
*/
/*
* FIXME
* Setting a mask produces strange results depending on the
* Window Manager. On fvwm2 it is shifted to the right ...
*/
/*SDL_WM_SetIcon(s, mask);*/
SDL_SetColorKey(s,
SDL_SRCCOLORKEY,
SDL_MapRGB(s->format,IMG_ICON->colors[tpix].r,IMG_ICON->colors[tpix].g,IMG_ICON->colors[tpix].b));
SDL_WM_SetIcon(s, NULL);
/* video modes and screen */
videoFlags = SDL_HWSURFACE|SDL_HWPALETTE;
sysvid_chkvm(); /* check video modes */
if (sysarg_args_zoom)
zoom = sysarg_args_zoom;
if (sysarg_args_fullscreen) {
videoFlags |= SDL_FULLSCREEN;
szoom = zoom;
zoom = fszoom;
}
screen = initScreen(SYSVID_WIDTH * zoom,
SYSVID_HEIGHT * zoom,
8, videoFlags);
/*
* create v_ frame buffer
*/
sysvid_fb = malloc(SYSVID_WIDTH * SYSVID_HEIGHT);
if (!sysvid_fb)
sys_panic("xrick/video: sysvid_fb malloc failed\n");
IFDEBUG_VIDEO(printf("xrick/video: ready\n"););
}
/*
* Shutdown video
*/
void
sysvid_shutdown(void)
{
free(sysvid_fb);
sysvid_fb = NULL;
SDL_Quit();
}
/*
* Update screen
* NOTE errors processing ?
*/
void
sysvid_update(rect_t *rects)
{
static SDL_Rect area;
U16 x, y, xz, yz;
U8 *p, *q, *p0, *q0;
if (rects == NULL)
return;
if (SDL_LockSurface(screen) == -1)
sys_panic("xrick/panic: SDL_LockSurface failed\n");
while (rects) {
p0 = sysvid_fb;
p0 += rects->x + rects->y * SYSVID_WIDTH;
q0 = (U8 *)screen->pixels;
q0 += (rects->x + rects->y * SYSVID_WIDTH * zoom) * zoom;
for (y = rects->y; y < rects->y + rects->height; y++) {
for (yz = 0; yz < zoom; yz++) {
p = p0;
q = q0;
for (x = rects->x; x < rects->x + rects->width; x++) {
for (xz = 0; xz < zoom; xz++) {
*q = *p;
q++;
}
p++;
}
q0 += SYSVID_WIDTH * zoom;
}
p0 += SYSVID_WIDTH;
}
IFDEBUG_VIDEO2(
for (y = rects->y; y < rects->y + rects->height; y++)
for (yz = 0; yz < zoom; yz++) {
p = (U8 *)screen->pixels + rects->x * zoom + (y * zoom + yz) * SYSVID_WIDTH * zoom;
*p = 0x01;
*(p + rects->width * zoom - 1) = 0x01;
}
for (x = rects->x; x < rects->x + rects->width; x++)
for (xz = 0; xz < zoom; xz++) {
p = (U8 *)screen->pixels + x * zoom + xz + rects->y * zoom * SYSVID_WIDTH * zoom;
*p = 0x01;
*(p + ((rects->height * zoom - 1) * zoom) * SYSVID_WIDTH) = 0x01;
}
);
area.x = rects->x * zoom;
area.y = rects->y * zoom;
area.h = rects->height * zoom;
area.w = rects->width * zoom;
SDL_UpdateRects(screen, 1, &area);
rects = rects->next;
}
SDL_UnlockSurface(screen);
}
/*
* Clear screen
* (077C)
*/
void
sysvid_clear(void)
{
memset(sysvid_fb, 0, SYSVID_WIDTH * SYSVID_HEIGHT);
}
/*
* Zoom
*/
void
sysvid_zoom(S8 z)
{
if (!(videoFlags & SDL_FULLSCREEN) &&
((z < 0 && zoom > 1) ||
(z > 0 && zoom < SYSVID_MAXZOOM))) {
zoom += z;
screen = initScreen(SYSVID_WIDTH * zoom,
SYSVID_HEIGHT * zoom,
screen->format->BitsPerPixel, videoFlags);
sysvid_restorePalette();
sysvid_update(&SCREENRECT);
}
}
/*
* Toggle fullscreen
*/
void
sysvid_toggleFullscreen(void)
{
videoFlags ^= SDL_FULLSCREEN;
if (videoFlags & SDL_FULLSCREEN) { /* go fullscreen */
szoom = zoom;
zoom = fszoom;
}
else { /* go window */
zoom = szoom;
}
screen = initScreen(SYSVID_WIDTH * zoom,
SYSVID_HEIGHT * zoom,
screen->format->BitsPerPixel, videoFlags);
sysvid_restorePalette();
sysvid_update(&SCREENRECT);
}
/* eof */
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