mirror of
https://github.com/libretro/scummvm.git
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287 lines
7.1 KiB
C++
287 lines
7.1 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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 "made/made.h"
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#include "made/screen.h"
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#include "made/screenfx.h"
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namespace Made {
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const byte ScreenEffects::vfxOffsTable[64] = {
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5, 2, 6, 1, 4, 7, 3, 0,
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7, 4, 0, 3, 6, 1, 5, 2,
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2, 5, 1, 6, 3, 0, 4, 7,
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0, 3, 7, 4, 1, 6, 2, 5,
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4, 0, 2, 5, 7, 3, 1, 6,
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1, 6, 4, 0, 2, 5, 7, 3,
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6, 1, 3, 7, 5, 2, 0, 4,
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3, 7, 5, 2, 0, 4, 6, 1
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};
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const byte ScreenEffects::vfxOffsIndexTable[8] = {
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6, 7, 2, 3, 4, 5, 0, 1
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};
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ScreenEffects::ScreenEffects(Screen *screen) : _screen(screen) {
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vfxOffsTablePtr = &vfxOffsTable[6 * 8];
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vfxX1 = 0;
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vfxY1 = 0;
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vfxWidth = 0;
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vfxHeight = 0;
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}
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void ScreenEffects::run(int16 effectNum, Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
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// TODO: Put effect functions into an array
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// TODO: Implement more visual effects
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switch (effectNum) {
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case 0: // No effect
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vfx00(surface, palette, newPalette, colorCount);
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break;
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case 9: // "Checkerboard" effect
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vfx09(surface, palette, newPalette, colorCount);
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break;
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case 10: // "Screen wipe in", left to right
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vfx10(surface, palette, newPalette, colorCount);
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break;
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case 12: // "Screen wipe in", top to bottom
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vfx12(surface, palette, newPalette, colorCount);
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break;
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case 14: // "Screen open" effect
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vfx14(surface, palette, newPalette, colorCount);
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break;
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case 17: // Palette fadeout/fadein
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vfx17(surface, palette, newPalette, colorCount);
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break;
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default:
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vfx00(surface, palette, newPalette, colorCount);
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warning("Unimplemented visual effect %d", effectNum);
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}
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}
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void ScreenEffects::flash(int flashCount, byte *palette, int colorCount) {
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int palSize = colorCount * 3;
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if (flashCount < 1)
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flashCount = 1;
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for (int i = 0; i < palSize; i++)
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_fxPalette[i] = CLIP<byte>(255 - palette[i], 0, 255);
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while (flashCount--) {
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_screen->setRGBPalette(_fxPalette, 0, colorCount);
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_screen->updateScreenAndWait(20);
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_screen->setRGBPalette(palette, 0, colorCount);
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_screen->updateScreenAndWait(20);
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}
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}
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void ScreenEffects::setPalette(byte *palette) {
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if (!_screen->isPaletteLocked()) {
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_screen->setRGBPalette(palette, 0, 256);
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}
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}
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void ScreenEffects::setBlendedPalette(byte *palette, byte *newPalette, int colorCount, int16 value, int16 maxValue) {
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if (!_screen->isPaletteLocked()) {
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int32 mulValue = (value * 64) / maxValue;
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for (int i = 0; i < colorCount * 3; i++)
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_fxPalette[i] = CLIP(newPalette[i] - (newPalette[i] - palette[i]) * mulValue / 64, 0, 255);
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_screen->setRGBPalette(_fxPalette, 0, 256);
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}
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}
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void ScreenEffects::copyRect(Graphics::Surface *surface, int16 x1, int16 y1, int16 x2, int16 y2) {
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// TODO: Clean up
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byte *src, *dst;
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x1 = CLIP<int16>(x1, 0, 320);
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y1 = CLIP<int16>(y1, 0, 200);
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x2 = CLIP<int16>(x2, 0, 320);
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y2 = CLIP<int16>(y2, 0, 200);
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x2 -= x1;
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y2 -= y1;
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vfxX1 = x1 & 0x0E;
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x1 += 16;
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x1 = x1 & 0xFFF0;
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x2 += vfxX1;
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x2 -= 15;
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if (x2 < 0)
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x2 = 0;
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vfxWidth = x2 & 0x0E;
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x2 = x2 & 0xFFF0;
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vfxY1 = y1 & 7;
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byte *source = (byte*)surface->getBasePtr(x1, y1);
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Graphics::Surface *vgaScreen = _screen->lockScreen();
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byte *dest = (byte*)vgaScreen->getBasePtr(x1, y1);
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int16 addX = x2 / 16;
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while (y2-- > 0) {
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int16 addVal = vfxOffsTablePtr[vfxY1] * 2;
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int16 w = 0;
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vfxY1 = (vfxY1 + 1) & 7;
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src = source + addVal;
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dst = dest + addVal;
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if (addVal < vfxX1) {
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if (addVal < vfxWidth)
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w = 1;
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else
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w = 0;
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} else {
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src -= 16;
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dst -= 16;
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if (addVal < vfxWidth)
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w = 2;
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else
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w = 1;
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}
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w += addX;
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while (w-- > 0) {
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*dst++ = *src++;
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*dst++ = *src++;
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src += 14;
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dst += 14;
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}
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source += 320;
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dest += 320;
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}
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vfxHeight = (vfxHeight + 1) & 7;
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vfxOffsTablePtr = &vfxOffsTable[vfxOffsIndexTable[vfxHeight] * 8];
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_screen->unlockScreen();
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}
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// No effect
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void ScreenEffects::vfx00(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
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setPalette(palette);
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_screen->showWorkScreen();
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}
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// "Checkerboard" effect
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void ScreenEffects::vfx09(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
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for (int i = 0; i < 8; i++) {
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copyRect(surface, 0, 0, 320, 200);
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for (int j = 0; j < 4; j++) {
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setBlendedPalette(palette, newPalette, colorCount, i * 4 + j, 32);
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_screen->updateScreenAndWait(25);
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}
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}
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setPalette(palette);
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}
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// "Screen wipe in", left to right
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void ScreenEffects::vfx10(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
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for (int x = -56; x < 312; x += 8) {
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copyRect(surface, x, 0, x + 64, 200);
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setBlendedPalette(palette, newPalette, colorCount, x + 56, 368);
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_screen->updateScreenAndWait(25);
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}
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setPalette(palette);
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}
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// "Screen wipe in", top to bottom
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void ScreenEffects::vfx12(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
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for (int y = -70; y < 312; y += 10) {
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copyRect(surface, 0, y, 320, y + 80);
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setBlendedPalette(palette, newPalette, colorCount, y + 70, 260);
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_screen->updateScreenAndWait(25);
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}
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setPalette(palette);
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}
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// "Screen open" effect
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void ScreenEffects::vfx14(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
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int16 x = 8, y = 5;
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for (int i = 0; i < 27; i++) {
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copyRect(surface, 160 - x, 100 - y, 160 + x, 100 + y);
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x += 8;
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y += 5;
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setBlendedPalette(palette, newPalette, colorCount, i, 27);
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_screen->updateScreenAndWait(25);
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}
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setPalette(palette);
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}
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// Palette fadeout/fadein
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void ScreenEffects::vfx17(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
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byte tempPalette[768];
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bool savedPaletteLock = _screen->isPaletteLocked();
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_screen->setPaletteLock(false);
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memcpy(tempPalette, palette, 768);
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// Fade out to black
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memset(palette, 0, 768);
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for (int i = 0; i < 50; i++) {
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setBlendedPalette(palette, newPalette, colorCount, i, 50);
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_screen->updateScreenAndWait(25);
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}
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_screen->setRGBPalette(palette, 0, colorCount);
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memcpy(palette, tempPalette, 768);
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_screen->showWorkScreen();
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// Fade from black to palette
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memset(newPalette, 0, 768);
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for (int i = 0; i < 50; i++) {
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setBlendedPalette(palette, newPalette, colorCount, i, 50);
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_screen->updateScreenAndWait(25);
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}
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_screen->setRGBPalette(palette, 0, colorCount);
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_screen->setPaletteLock(savedPaletteLock);
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}
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} // End of namespace Made
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