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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 "common/timer.h"
#include "common/util.h"
#include "graphics/surface.h"
#include "sci/sci.h"
#include "sci/engine/state.h"
#include "sci/graphics/screen.h"
namespace Sci {
Screen::Screen(ResourceManager *resMan, int16 width, int16 height, bool upscaledHires) :
_resMan(resMan), _width(width), _height(height), _upscaledHires(upscaledHires) {
_pixels = _width * _height;
_displayWidth = _width;
_displayHeight = _height;
if (_upscaledHires) {
_displayWidth *= 2;
_displayHeight *= 2;
}
_displayPixels = _displayWidth * _displayHeight;
_visualScreen = (byte *)calloc(_pixels, 1);
_priorityScreen = (byte *)calloc(_pixels, 1);
_controlScreen = (byte *)calloc(_pixels, 1);
_displayScreen = (byte *)calloc(_displayPixels, 1);
// Sets display screen to be actually displayed
_activeScreen = _displayScreen;
_picNotValid = 0;
_picNotValidSci11 = 0;
_unditherState = true;
if (_resMan->isVGA() || (_resMan->getViewType() == kViewAmiga)) {
// It's not 100% accurate to set white to be 255 for amiga games
// The problem is: there are 16-color and 32-color amiga games, so we would need to jump around
// 255 is defined as white in our sci at all times, so it doesnt matter
_colorWhite = 255;
if (getSciVersion() >= SCI_VERSION_1_1)
_colorDefaultVectorData = 255;
else
_colorDefaultVectorData = 0;
} else {
_colorWhite = 15;
_colorDefaultVectorData = 0;
}
// Initialize the actual screen
initGraphics(_displayWidth, _displayHeight, _displayWidth > 320);
}
Screen::~Screen() {
free(_visualScreen);
free(_priorityScreen);
free(_controlScreen);
free(_displayScreen);
}
void Screen::copyToScreen() {
g_system->copyRectToScreen(_activeScreen, _displayWidth, 0, 0, _displayWidth, _displayHeight);
}
void Screen::copyFromScreen(byte *buffer) {
Graphics::Surface *screen;
screen = g_system->lockScreen();
memcpy(buffer, screen->pixels, _displayWidth * _displayHeight);
g_system->unlockScreen();
}
void Screen::syncWithFramebuffer() {
Graphics::Surface *screen = g_system->lockScreen();
memcpy(_displayScreen, screen->pixels, _displayPixels);
g_system->unlockScreen();
}
void Screen::copyRectToScreen(const Common::Rect &rect) {
if (!_upscaledHires) {
g_system->copyRectToScreen(_activeScreen + rect.top * _displayWidth + rect.left, _displayWidth, rect.left, rect.top, rect.width(), rect.height());
} else {
g_system->copyRectToScreen(_activeScreen + rect.top * 2 * _displayWidth + rect.left * 2, _displayWidth, rect.left * 2, rect.top * 2, rect.width() * 2, rect.height() * 2);
}
}
// This copies a rect to screen w/o scaling adjustment and is only meant to be used on hires graphics used in upscaled hires mode
void Screen::copyDisplayRectToScreen(const Common::Rect &rect) {
if (!_upscaledHires)
error("copyDisplayRectToScreen: not in upscaled hires mode");
g_system->copyRectToScreen(_activeScreen + rect.top * _displayWidth + rect.left, _displayWidth, rect.left, rect.top, rect.width(), rect.height());
}
void Screen::copyRectToScreen(const Common::Rect &rect, int16 x, int16 y) {
if (!_upscaledHires) {
g_system->copyRectToScreen(_activeScreen + rect.top * _displayWidth + rect.left, _displayWidth, x, y, rect.width(), rect.height());
} else {
g_system->copyRectToScreen(_activeScreen + rect.top * 2 * _displayWidth + rect.left * 2, _displayWidth, x * 2, y * 2, rect.width() * 2, rect.height() * 2);
}
}
byte Screen::getDrawingMask(byte color, byte prio, byte control) {
byte flag = 0;
if (color != 255)
flag |= SCI_SCREEN_MASK_VISUAL;
if (prio != 255)
flag |= SCI_SCREEN_MASK_PRIORITY;
if (control != 255)
flag |= SCI_SCREEN_MASK_CONTROL;
return flag;
}
void Screen::putPixel(int x, int y, byte drawMask, byte color, byte priority, byte control) {
int offset = y * _width + x;
if (drawMask & SCI_SCREEN_MASK_VISUAL) {
_visualScreen[offset] = color;
if (!_upscaledHires) {
_displayScreen[offset] = color;
} else {
int displayOffset = y * 2 * _displayWidth + x * 2;
_displayScreen[displayOffset] = color;
_displayScreen[displayOffset + 1] = color;
_displayScreen[displayOffset + _displayWidth] = color;
_displayScreen[displayOffset + _displayWidth + 1] = color;
}
}
if (drawMask & SCI_SCREEN_MASK_PRIORITY)
_priorityScreen[offset] = priority;
if (drawMask & SCI_SCREEN_MASK_CONTROL)
_controlScreen[offset] = control;
}
// This will just change a pixel directly on displayscreen. Its supposed to get only used on upscaled-Hires games where
// hires content needs to get drawn ONTO the upscaled display screen (like japanese fonts, hires portraits, etc.)
void Screen::putPixelOnDisplay(int x, int y, byte color) {
int offset = y * _displayWidth + x;
_displayScreen[offset] = color;
}
// Sierra's Bresenham line drawing
// WARNING: Do not just blindly replace this with Graphics::drawLine(), as it seems to create issues with flood fill
void Screen::drawLine(Common::Point startPoint, Common::Point endPoint, byte color, byte priority, byte control) {
int16 left = startPoint.x;
int16 top = startPoint.y;
int16 right = endPoint.x;
int16 bottom = endPoint.y;
//set_drawing_flag
byte drawMask = getDrawingMask(color, priority, control);
// horizontal line
if (top == bottom) {
if (right < left)
SWAP(right, left);
for (int i = left; i <= right; i++)
putPixel(i, top, drawMask, color, priority, control);
return;
}
// vertical line
if (left == right) {
if (top > bottom)
SWAP(top, bottom);
for (int i = top; i <= bottom; i++)
putPixel(left, i, drawMask, color, priority, control);
return;
}
// sloped line - draw with Bresenham algorithm
int dy = bottom - top;
int dx = right - left;
int stepy = dy < 0 ? -1 : 1;
int stepx = dx < 0 ? -1 : 1;
dy = ABS(dy) << 1;
dx = ABS(dx) << 1;
// setting the 1st and last pixel
putPixel(left, top, drawMask, color, priority, control);
putPixel(right, bottom, drawMask, color, priority, control);
// drawing the line
if (dx > dy) { // going horizontal
int fraction = dy - (dx >> 1);
while (left != right) {
if (fraction >= 0) {
top += stepy;
fraction -= dx;
}
left += stepx;
fraction += dy;
putPixel(left, top, drawMask, color, priority, control);
}
} else { // going vertical
int fraction = dx - (dy >> 1);
while (top != bottom) {
if (fraction >= 0) {
left += stepx;
fraction -= dy;
}
top += stepy;
fraction += dx;
putPixel(left, top, drawMask, color, priority, control);
}
}
}
byte Screen::getVisual(int x, int y) {
return _visualScreen[y * _width + x];
}
byte Screen::getPriority(int x, int y) {
return _priorityScreen[y * _width + x];
}
byte Screen::getControl(int x, int y) {
return _controlScreen[y * _width + x];
}
byte Screen::isFillMatch(int16 x, int16 y, byte screenMask, byte t_color, byte t_pri, byte t_con) {
int offset = y * _width + x;
byte match = 0;
if (screenMask & SCI_SCREEN_MASK_VISUAL && *(_visualScreen + offset) == t_color)
match |= SCI_SCREEN_MASK_VISUAL;
if (screenMask & SCI_SCREEN_MASK_PRIORITY && *(_priorityScreen + offset) == t_pri)
match |= SCI_SCREEN_MASK_PRIORITY;
if (screenMask & SCI_SCREEN_MASK_CONTROL && *(_controlScreen + offset) == t_con)
match |= SCI_SCREEN_MASK_CONTROL;
return match;
}
int Screen::bitsGetDataSize(Common::Rect rect, byte mask) {
int byteCount = sizeof(rect) + sizeof(mask);
int pixels = rect.width() * rect.height();
if (mask & SCI_SCREEN_MASK_VISUAL) {
byteCount += pixels; // _visualScreen
if (!_upscaledHires) {
byteCount += pixels; // _displayScreen
} else {
byteCount += pixels * 4; // _displayScreen (upscaled hires)
}
}
if (mask & SCI_SCREEN_MASK_PRIORITY) {
byteCount += pixels; // _priorityScreen
}
if (mask & SCI_SCREEN_MASK_CONTROL) {
byteCount += pixels; // _controlScreen
}
if (mask & SCI_SCREEN_MASK_DISPLAY) {
if (!_upscaledHires)
error("bitsGetDataSize() called w/o being in upscaled hires mode");
byteCount += pixels; // _displayScreen (coordinates actually are given to us for hires displayScreen)
}
return byteCount;
}
void Screen::bitsSave(Common::Rect rect, byte mask, byte *memoryPtr) {
memcpy(memoryPtr, (void *)&rect, sizeof(rect)); memoryPtr += sizeof(rect);
memcpy(memoryPtr, (void *)&mask, sizeof(mask)); memoryPtr += sizeof(mask);
if (mask & SCI_SCREEN_MASK_VISUAL) {
bitsSaveScreen(rect, _visualScreen, _width, memoryPtr);
bitsSaveDisplayScreen(rect, memoryPtr);
}
if (mask & SCI_SCREEN_MASK_PRIORITY) {
bitsSaveScreen(rect, _priorityScreen, _width, memoryPtr);
}
if (mask & SCI_SCREEN_MASK_CONTROL) {
bitsSaveScreen(rect, _controlScreen, _width, memoryPtr);
}
if (mask & SCI_SCREEN_MASK_DISPLAY) {
if (!_upscaledHires)
error("bitsSave() called w/o being in upscaled hires mode");
bitsSaveScreen(rect, _displayScreen, _displayWidth, memoryPtr);
}
}
void Screen::bitsSaveScreen(Common::Rect rect, byte *screen, uint16 screenWidth, byte *&memoryPtr) {
int width = rect.width();
int y;
screen += (rect.top * screenWidth) + rect.left;
for (y = rect.top; y < rect.bottom; y++) {
memcpy(memoryPtr, (void*)screen, width); memoryPtr += width;
screen += screenWidth;
}
}
void Screen::bitsSaveDisplayScreen(Common::Rect rect, byte *&memoryPtr) {
byte *screen = _displayScreen;
int width = rect.width();
int y;
if (!_upscaledHires) {
screen += (rect.top * _displayWidth) + rect.left;
} else {
screen += (rect.top * 2 * _displayWidth) + rect.left * 2;
width *= 2;
rect.top *= 2; rect.bottom *= 2;
}
for (y = rect.top; y < rect.bottom; y++) {
memcpy(memoryPtr, (void*)screen, width); memoryPtr += width;
screen += _displayWidth;
}
}
void Screen::bitsGetRect(byte *memoryPtr, Common::Rect *destRect) {
memcpy((void *)destRect, memoryPtr, sizeof(Common::Rect));
}
void Screen::bitsRestore(byte *memoryPtr) {
Common::Rect rect;
byte mask;
memcpy((void *)&rect, memoryPtr, sizeof(rect)); memoryPtr += sizeof(rect);
memcpy((void *)&mask, memoryPtr, sizeof(mask)); memoryPtr += sizeof(mask);
if (mask & SCI_SCREEN_MASK_VISUAL) {
bitsRestoreScreen(rect, memoryPtr, _visualScreen, _width);
bitsRestoreDisplayScreen(rect, memoryPtr);
}
if (mask & SCI_SCREEN_MASK_PRIORITY) {
bitsRestoreScreen(rect, memoryPtr, _priorityScreen, _width);
}
if (mask & SCI_SCREEN_MASK_CONTROL) {
bitsRestoreScreen(rect, memoryPtr, _controlScreen, _width);
}
if (mask & SCI_SCREEN_MASK_DISPLAY) {
if (!_upscaledHires)
error("bitsRestore() called w/o being in upscaled hires mode");
bitsRestoreScreen(rect, memoryPtr, _displayScreen, _displayWidth);
}
}
void Screen::bitsRestoreScreen(Common::Rect rect, byte *&memoryPtr, byte *screen, uint16 screenWidth) {
int width = rect.width();
int y;
screen += (rect.top * screenWidth) + rect.left;
for (y = rect.top; y < rect.bottom; y++) {
memcpy((void*) screen, memoryPtr, width); memoryPtr += width;
screen += screenWidth;
}
}
void Screen::bitsRestoreDisplayScreen(Common::Rect rect, byte *&memoryPtr) {
byte *screen = _displayScreen;
int width = rect.width();
int y;
if (!_upscaledHires) {
screen += (rect.top * _displayWidth) + rect.left;
} else {
screen += (rect.top * 2 * _displayWidth) + rect.left * 2;
width *= 2;
rect.top *= 2; rect.bottom *= 2;
}
for (y = rect.top; y < rect.bottom; y++) {
memcpy((void*) screen, memoryPtr, width); memoryPtr += width;
screen += _displayWidth;
}
}
void Screen::setPalette(Palette*pal) {
// just copy palette to system
byte bpal[4 * 256];
// Get current palette, update it and put back
g_system->grabPalette(bpal, 0, 256);
for (int16 i = 0; i < 256; i++) {
if (!pal->colors[i].used)
continue;
bpal[i * 4] = CLIP(pal->colors[i].r * pal->intensity[i] / 100, 0, 255);
bpal[i * 4 + 1] = CLIP(pal->colors[i].g * pal->intensity[i] / 100, 0, 255);
bpal[i * 4 + 2] = CLIP(pal->colors[i].b * pal->intensity[i] / 100, 0, 255);
bpal[i * 4 + 3] = 100;
}
g_system->setPalette(bpal, 0, 256);
}
void Screen::setVerticalShakePos(uint16 shakePos) {
if (!_upscaledHires)
g_system->setShakePos(shakePos);
else
g_system->setShakePos(shakePos * 2);
}
void Screen::dither(bool addToFlag) {
int y, x;
byte color, ditheredColor;
byte *visualPtr = _visualScreen;
byte *displayPtr = _displayScreen;
if (!_unditherState) {
// Do dithering on visual and display-screen
for (y = 0; y < _height; y++) {
for (x = 0; x < _width; x++) {
color = *visualPtr;
if (color & 0xF0) {
color ^= color << 4;
color = ((x^y) & 1) ? color >> 4 : color & 0x0F;
*displayPtr = color;
if (_upscaledHires) {
*(displayPtr + 1) = color;
*(displayPtr + _displayWidth) = color;
*(displayPtr + _displayWidth + 1) = color;
}
*visualPtr = color;
}
visualPtr++; displayPtr++;
if (_upscaledHires)
displayPtr++;
}
if (_upscaledHires)
displayPtr += _displayWidth;
}
} else {
if (!addToFlag)
memset(&_unditherMemorial, 0, sizeof(_unditherMemorial));
// Do dithering on visual screen and put decoded but undithered byte onto display-screen
for (y = 0; y < _height; y++) {
for (x = 0; x < _width; x++) {
color = *visualPtr;
if (color & 0xF0) {
color ^= color << 4;
// remember dither combination for cel-undithering
_unditherMemorial[color]++;
// if decoded color wants do dither with black on left side, we turn it around
// otherwise the normal ega color would get used for display
if (color & 0xF0) {
ditheredColor = color;
} else {
ditheredColor = color << 4;
}
*displayPtr = ditheredColor;
if (_upscaledHires) {
*(displayPtr + 1) = ditheredColor;
*(displayPtr + _displayWidth) = ditheredColor;
*(displayPtr + _displayWidth + 1) = ditheredColor;
}
color = ((x^y) & 1) ? color >> 4 : color & 0x0F;
*visualPtr = color;
}
visualPtr++; displayPtr++;
if (_upscaledHires)
displayPtr++;
}
if (_upscaledHires)
displayPtr += _displayWidth;
}
}
}
void Screen::unditherSetState(bool flag) {
_unditherState = flag;
}
int16 *Screen::unditherGetMemorial() {
if (_unditherState)
return (int16 *)&_unditherMemorial;
else
return NULL;
}
void Screen::debugShowMap(int mapNo) {
// We cannot really support changing maps when in upscaledHires mode
if (_upscaledHires)
return;
switch (mapNo) {
case 0:
_activeScreen = _visualScreen;
break;
case 1:
_activeScreen = _priorityScreen;
break;
case 2:
_activeScreen = _controlScreen;
break;
case 3:
_activeScreen = _displayScreen;
break;
}
copyToScreen();
}
void Screen::scale2x(byte *src, byte *dst, int16 srcWidth, int16 srcHeight) {
int newWidth = srcWidth * 2;
byte *srcPtr = src;
for (int y = 0; y < srcHeight; y++) {
for (int x = 0; x < srcWidth; x++) {
int destOffset = y * 2 * newWidth + x * 2;
dst[destOffset] = *srcPtr;
dst[destOffset + 1] = *srcPtr;
dst[destOffset + newWidth] = *srcPtr;
dst[destOffset + newWidth + 1] = *srcPtr;
srcPtr++;
}
}
}
} // End of namespace Sci
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