mirror of
https://github.com/libretro/scummvm.git
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153 lines
3.8 KiB
C++
153 lines
3.8 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2005-2006 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "lure/screen.h"
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#include "lure/luredefs.h"
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#include "lure/memory.h"
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#include "lure/disk.h"
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#include "lure/decode.h"
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namespace Lure {
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static Screen *int_disk = NULL;
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Screen &Screen::getReference() {
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return *int_disk;
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}
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Screen::Screen(OSystem &system): _system(system),
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_screen(new Surface(FULL_SCREEN_WIDTH, FULL_SCREEN_HEIGHT)),
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_disk(Disk::getReference()),
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_palette(new Palette(GAME_PALETTE_RESOURCE_ID)) {
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int_disk = this;
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_screen->empty();
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_system.setPalette(_palette->data(), 0, GAME_COLOURS);
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}
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Screen::~Screen() {
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delete _screen;
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delete _palette;
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}
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// setPaletteEmpty
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// Defaults the palette to an empty set
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void Screen::setPaletteEmpty() {
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delete _palette;
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_palette = new Palette();
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_system.setPalette(_palette->data(), 0, GAME_COLOURS);
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_system.updateScreen();
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}
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// setPalette
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// Sets the current palette to the passed palette
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void Screen::setPalette(Palette *p) {
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_palette->copyFrom(p);
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_system.setPalette(_palette->data(), 0, GAME_COLOURS);
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_system.updateScreen();
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}
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// paletteFadeIn
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// Fades in the palette. For proper operation, the palette should have been
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// previously set to empty
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void Screen::paletteFadeIn(Palette *p) {
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bool changed;
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byte *const pDest = p->data();
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byte *const pTemp = _palette->data();
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do {
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changed = false;
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for (int palCtr = 0; palCtr < p->numEntries() * 4; ++palCtr)
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{
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if (palCtr % PALETTE_FADE_INC_SIZE == (PALETTE_FADE_INC_SIZE - 1)) continue;
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bool isDifferent = pTemp[palCtr] < pDest[palCtr];
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if (isDifferent) {
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if (pDest[palCtr] - pTemp[palCtr] < PALETTE_FADE_INC_SIZE)
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pTemp[palCtr] = pDest[palCtr];
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else pTemp[palCtr] += PALETTE_FADE_INC_SIZE;
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changed = true;
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}
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}
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if (changed) {
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_system.setPalette(_palette->data(), 0, GAME_COLOURS);
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_system.updateScreen();
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_system.delayMillis(20);
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}
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} while (changed);
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}
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// paletteFadeOut
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// Fades the screen to black by gradually decreasing the palette colours
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void Screen::paletteFadeOut() {
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bool changed;
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do {
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byte *pTemp = _palette->data();
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changed = false;
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for (uint32 palCtr = 0; palCtr < _palette->palette()->size(); ++palCtr, ++pTemp) {
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if (palCtr % PALETTE_FADE_INC_SIZE == (PALETTE_FADE_INC_SIZE - 1))
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continue;
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bool isDifferent = *pTemp > 0;
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if (isDifferent) {
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if (*pTemp < PALETTE_FADE_INC_SIZE) *pTemp = 0;
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else *pTemp -= PALETTE_FADE_INC_SIZE;
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changed = true;
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}
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}
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if (changed) {
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_system.setPalette(_palette->data(), 0, GAME_COLOURS);
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_system.updateScreen();
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_system.delayMillis(20);
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}
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} while (changed);
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}
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void Screen::resetPalette() {
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Palette p(GAME_PALETTE_RESOURCE_ID);
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setPalette(&p);
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}
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void Screen::empty() {
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_screen->empty();
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update();
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}
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void Screen::update() {
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_system.copyRectToScreen(screen_raw(), FULL_SCREEN_WIDTH, 0, 0, FULL_SCREEN_WIDTH, FULL_SCREEN_HEIGHT);
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_system.updateScreen();
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}
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void Screen::updateArea(uint16 x, uint16 y, uint16 w, uint16 h) {
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_system.copyRectToScreen(screen_raw(), FULL_SCREEN_WIDTH, x, y, w, h);
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_system.updateScreen();
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}
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} // end of namespace Lure
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