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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.
*
* $URL$
* $Id$
*
*/
#include "made/made.h"
#include "made/screen.h"
#include "made/screenfx.h"
namespace Made {
const byte ScreenEffects::vfxOffsTable[64] = {
5, 2, 6, 1, 4, 7, 3, 0,
7, 4, 0, 3, 6, 1, 5, 2,
2, 5, 1, 6, 3, 0, 4, 7,
0, 3, 7, 4, 1, 6, 2, 5,
4, 0, 2, 5, 7, 3, 1, 6,
1, 6, 4, 0, 2, 5, 7, 3,
6, 1, 3, 7, 5, 2, 0, 4,
3, 7, 5, 2, 0, 4, 6, 1
};
const byte ScreenEffects::vfxOffsIndexTable[8] = {
6, 7, 2, 3, 4, 5, 0, 1
};
ScreenEffects::ScreenEffects(Screen *screen) : _screen(screen) {
vfxOffsTablePtr = &vfxOffsTable[6 * 8];
vfxX1 = 0;
vfxY1 = 0;
vfxWidth = 0;
vfxHeight = 0;
}
void ScreenEffects::run(int16 effectNum, Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
// TODO: Put effect functions into an array
// TODO: Implement more visual effects
switch (effectNum) {
case 0: // No effect
vfx00(surface, palette, newPalette, colorCount);
break;
case 2:
vfx02(surface, palette, newPalette, colorCount);
break;
case 9: // "Checkerboard" effect
vfx09(surface, palette, newPalette, colorCount);
break;
case 10: // "Screen wipe in", left to right
vfx10(surface, palette, newPalette, colorCount);
break;
case 12: // "Screen wipe in", top to bottom
vfx12(surface, palette, newPalette, colorCount);
break;
case 14: // "Screen open" effect
vfx14(surface, palette, newPalette, colorCount);
break;
case 15:
vfx15(surface, palette, newPalette, colorCount);
break;
case 17: // Palette fadeout/fadein
vfx17(surface, palette, newPalette, colorCount);
break;
default:
vfx00(surface, palette, newPalette, colorCount);
warning("Unimplemented visual effect %d", effectNum);
}
}
void ScreenEffects::flash(int flashCount, byte *palette, int colorCount) {
int palSize = colorCount * 3;
if (flashCount < 1)
flashCount = 1;
for (int i = 0; i < palSize; i++)
_fxPalette[i] = CLIP<byte>(255 - palette[i], 0, 255);
while (flashCount--) {
_screen->setRGBPalette(_fxPalette, 0, colorCount);
_screen->updateScreenAndWait(20);
_screen->setRGBPalette(palette, 0, colorCount);
_screen->updateScreenAndWait(20);
}
}
void ScreenEffects::setPalette(byte *palette) {
if (!_screen->isPaletteLocked()) {
_screen->setRGBPalette(palette, 0, 256);
}
}
void ScreenEffects::setBlendedPalette(byte *palette, byte *newPalette, int colorCount, int16 value, int16 maxValue) {
if (!_screen->isPaletteLocked()) {
int32 mulValue = (value * 64) / maxValue;
for (int i = 0; i < colorCount * 3; i++)
_fxPalette[i] = CLIP(newPalette[i] - (newPalette[i] - palette[i]) * mulValue / 64, 0, 255);
_screen->setRGBPalette(_fxPalette, 0, 256);
}
}
void ScreenEffects::copyFxRect(Graphics::Surface *surface, int16 x1, int16 y1, int16 x2, int16 y2) {
// TODO: Clean up
byte *src, *dst;
x1 = CLIP<int16>(x1, 0, 320);
y1 = CLIP<int16>(y1, 0, 200);
x2 = CLIP<int16>(x2, 0, 320);
y2 = CLIP<int16>(y2, 0, 200);
x2 -= x1;
y2 -= y1;
vfxX1 = x1 & 0x0E;
x1 += 16;
x1 = x1 & 0xFFF0;
x2 += vfxX1;
x2 -= 15;
if (x2 < 0)
x2 = 0;
vfxWidth = x2 & 0x0E;
x2 = x2 & 0xFFF0;
vfxY1 = y1 & 7;
byte *source = (byte*)surface->getBasePtr(x1, y1);
Graphics::Surface *vgaScreen = _screen->lockScreen();
byte *dest = (byte*)vgaScreen->getBasePtr(x1, y1);
int16 addX = x2 / 16;
while (y2-- > 0) {
int16 addVal = vfxOffsTablePtr[vfxY1] * 2;
int16 w = 0;
vfxY1 = (vfxY1 + 1) & 7;
src = source + addVal;
dst = dest + addVal;
if (addVal < vfxX1) {
if (addVal < vfxWidth)
w = 1;
else
w = 0;
} else {
src -= 16;
dst -= 16;
if (addVal < vfxWidth)
w = 2;
else
w = 1;
}
w += addX;
while (w-- > 0) {
*dst++ = *src++;
*dst++ = *src++;
src += 14;
dst += 14;
}
source += 320;
dest += 320;
}
vfxHeight = (vfxHeight + 1) & 7;
vfxOffsTablePtr = &vfxOffsTable[vfxOffsIndexTable[vfxHeight] * 8];
_screen->unlockScreen();
}
void ScreenEffects::copyRect(Graphics::Surface *surface, int16 x1, int16 y1, int16 x2, int16 y2) {
Graphics::Surface *vgaScreen = _screen->lockScreen();
byte *source = (byte*)surface->getBasePtr(x1, y1);
byte *dest = (byte*)vgaScreen->getBasePtr(x1, y1);
for (int y = 0; y < y2 - y1; y++) {
memcpy(dest, source, x2 - x1);
dest += 320;
source += 320;
}
_screen->unlockScreen();
}
// No effect
void ScreenEffects::vfx00(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
setPalette(palette);
_screen->showWorkScreen();
// FIXME: For Manhole; causes sluggish mouse
_screen->updateScreenAndWait(100);
}
void ScreenEffects::vfx02(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
for (int x = 312; x >= 0; x -= 8) {
copyRect(surface, x, 0, x + 8, 200);
setBlendedPalette(palette, newPalette, colorCount, 312 - x, 312);
_screen->updateScreenAndWait(25);
}
setPalette(palette);
}
// "Checkerboard" effect
void ScreenEffects::vfx09(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
for (int i = 0; i < 8; i++) {
copyFxRect(surface, 0, 0, 320, 200);
for (int j = 0; j < 4; j++) {
setBlendedPalette(palette, newPalette, colorCount, i * 4 + j, 36/*FIX?*/);
_screen->updateScreenAndWait(25);
}
}
setPalette(palette);
}
// "Screen wipe in", left to right
void ScreenEffects::vfx10(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
for (int x = -56; x < 312; x += 8) {
copyFxRect(surface, x, 0, x + 64, 200);
setBlendedPalette(palette, newPalette, colorCount, x + 56, 368);
_screen->updateScreenAndWait(25);
}
setPalette(palette);
}
// "Screen wipe in", top to bottom
void ScreenEffects::vfx12(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
for (int y = -70; y < 312; y += 10) {
copyFxRect(surface, 0, y, 320, y + 80);
setBlendedPalette(palette, newPalette, colorCount, y + 70, 260);
_screen->updateScreenAndWait(25);
}
setPalette(palette);
}
// "Screen open" effect
void ScreenEffects::vfx14(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
int16 x = 8, y = 5;
for (int i = 0; i < 27; i++) {
copyFxRect(surface, 160 - x, 100 - y, 160 + x, 100 + y);
x += 8;
y += 5;
setBlendedPalette(palette, newPalette, colorCount, i, 27);
_screen->updateScreenAndWait(25);
}
setPalette(palette);
}
void ScreenEffects::vfx15(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
int16 x = 8;
for (int i = 0; i < 27; i++) {
copyFxRect(surface, 160 - x, 0, 160 + x, 200);
x += 8;
setBlendedPalette(palette, newPalette, colorCount, i, 27);
_screen->updateScreenAndWait(25);
}
setPalette(palette);
}
// Palette fadeout/fadein
void ScreenEffects::vfx17(Graphics::Surface *surface, byte *palette, byte *newPalette, int colorCount) {
byte tempPalette[768];
bool savedPaletteLock = _screen->isPaletteLocked();
_screen->setPaletteLock(false);
memcpy(tempPalette, palette, 768);
// Fade out to black
memset(palette, 0, 768);
for (int i = 0; i < 50; i++) {
setBlendedPalette(palette, newPalette, colorCount, i, 50);
_screen->updateScreenAndWait(25);
}
_screen->setRGBPalette(palette, 0, colorCount);
memcpy(palette, tempPalette, 768);
_screen->showWorkScreen();
// Fade from black to palette
memset(newPalette, 0, 768);
for (int i = 0; i < 50; i++) {
setBlendedPalette(palette, newPalette, colorCount, i, 50);
_screen->updateScreenAndWait(25);
}
_screen->setRGBPalette(palette, 0, colorCount);
_screen->setPaletteLock(savedPaletteLock);
}
} // End of namespace Made
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