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scummvm/engines/voyeur/graphics.cpp

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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.
*
*/
#include "voyeur/graphics.h"
#include "voyeur/voyeur.h"
#include "engines/util.h"
#include "graphics/palette.h"
#include "graphics/surface.h"
namespace Voyeur {
/*------------------------------------------------------------------------*/
DrawInfo::DrawInfo(int penColor, const Common::Point &pos, int flags) {
_penColor = penColor;
_pos = pos;
_flags = flags;
}
/*------------------------------------------------------------------------*/
GraphicsManager::GraphicsManager():
_defaultDrawInfo(1, Common::Point(), 0),
_drawPtr(&_defaultDrawInfo) {
_SVGAPage = 0;
_SVGAMode = 0;
_SVGAReset = 0;
_screenOffset = 0;
_planeSelect = 0;
_sImageShift = 3;
_palFlag = false;
_MCGAMode = false;
_saveBack = true;
_drawTextPermFlag = false;
_clipPtr = NULL;
_viewPortListPtr = NULL;
_backgroundPage = NULL;
_vPort = NULL;
_fontPtr = NULL;
}
void GraphicsManager::sInitGraphics() {
initGraphics(SCREEN_WIDTH, SCREEN_HEIGHT, false);
_screenSurface.create(SCREEN_WIDTH, SCREEN_HEIGHT,
Graphics::PixelFormat::createFormatCLUT8());
clearPalette();
}
GraphicsManager::~GraphicsManager() {
_screenSurface.free();
}
void GraphicsManager::setupMCGASaveRect(ViewPortResource *viewPort) {
_MCGAMode = true;
if (viewPort->_activePage) {
viewPort->_activePage->_flags |= 1;
Common::Rect *clipRect = _clipPtr;
_clipPtr = &viewPort->_clipRect;
sDrawPic(viewPort->_activePage, viewPort->_currentPic, Common::Point());
_clipPtr = clipRect;
}
viewPort->_rectListCount[1] = -1;
}
void GraphicsManager::addRectOptSaveRect(ViewPortResource *viewPort, int idx, const Common::Rect &bounds) {
int count1, count2;
int idx1, varE, var24;
if (viewPort->_rectListCount[idx] == -1)
return;
// TODO: Lots of code in original, which I suspect may be overlapping rect merging
viewPort->_rectListPtr[idx]->push_back(bounds);
++viewPort->_rectListCount[idx];
}
void GraphicsManager::restoreMCGASaveRect(ViewPortResource *viewPort) {
if (viewPort->_rectListCount[0] != -1) {
for (int i = 0; i < viewPort->_rectListCount[0]; ++i) {
addRectOptSaveRect(viewPort, 1, (*viewPort->_rectListPtr[0])[i]);
}
} else {
viewPort->_rectListCount[1] = -1;
}
restoreBack(*viewPort->_rectListPtr[1], viewPort->_rectListCount[1], viewPort->_pages[0],
viewPort->_pages[1]);
int count = viewPort->_rectListCount[0];
restoreBack(*viewPort->_rectListPtr[0], viewPort->_rectListCount[0],
viewPort->_activePage, viewPort->_currentPic);
SWAP(viewPort->_rectListPtr[0], viewPort->_rectListPtr[1]);
viewPort->_rectListCount[1] = count;
}
void GraphicsManager::addRectNoSaveBack(ViewPortResource *viewPort, int idx, const Common::Rect &bounds) {
// TODO: more
}
void GraphicsManager::sDrawPic(DisplayResource *srcDisplay, DisplayResource *destDisplay,
const Common::Point &initialOffset) {
int var4C = 0;
int width1, width2;
int widthDiff, widthDiff2;
int height1;
int srcOffset;
int screenOffset;
int srcFlags, destFlags;
ViewPortResource *destViewPort = NULL;
Common::Rect newBounds;
Common::Rect backBounds;
int var24;
bool isClipped = false;
int var52;
int var20, var22;
int var26, var2C;
byte pixel;
byte *srcImgData, *destImgData;
byte *srcP, *destP;
byte byteVal, byteVal2;
// Get the picture parameters, or deference viewport pointers to get their pictures
PictureResource *srcPic = (PictureResource *)srcDisplay;
PictureResource *destPic = (PictureResource *)destDisplay;
if (srcDisplay->_flags & DISPFLAG_VIEWPORT) {
// A viewport was passed, not a picture
srcPic = ((ViewPortResource *)srcDisplay)->_currentPic;
}
if (destDisplay->_flags & DISPFLAG_VIEWPORT) {
destViewPort = (ViewPortResource *)destDisplay;
destPic = destViewPort->_currentPic;
}
Common::Point offset = Common::Point(initialOffset.x + srcPic->_bounds.left - destPic->_bounds.left,
initialOffset.y + srcPic->_bounds.top - destPic->_bounds.top);
width1 = width2 = srcPic->_bounds.width();
height1 = srcPic->_bounds.height();
srcOffset = 0;
srcFlags = srcPic->_flags;
destFlags = destPic->_flags;
byte *cursorData = NULL;
if (srcFlags & 1) {
if (_clipPtr) {
int xs = _clipPtr->left - destPic->_bounds.left;
int ys = _clipPtr->top - destPic->_bounds.top;
newBounds = Common::Rect(xs, ys, xs + _clipPtr->width(), ys + _clipPtr->height());
} else if (destViewPort) {
int xs = destViewPort->_clipRect.left - destPic->_bounds.left;
int ys = destViewPort->_clipRect.top - destPic->_bounds.top;
newBounds = Common::Rect(xs, ys, xs + destViewPort->_clipRect.width(),
ys + destViewPort->_clipRect.height());
} else {
newBounds = Common::Rect(0, 0, destPic->_bounds.width(), destPic->_bounds.height());
}
var24 = offset.y - newBounds.top;
if (var24 < 0) {
var52 = width2;
srcOffset -= var24 * var52;
height1 += var24;
offset.y = newBounds.top;
if (height1 <= 0)
return;
isClipped = true;
}
var20 = newBounds.bottom - (offset.y + height1);
if (var20 < 0) {
height1 += var20;
if (height1 <= 0)
return;
}
var22 = offset.x - newBounds.left;
if (var22 < 0) {
srcOffset -= var22;
width2 += var22;
offset.x = newBounds.left;
if (width2 <= 0)
return;
isClipped = true;
}
var26 = newBounds.right - (offset.x + width2);
if (var26 < 0) {
width2 += var26;
if (width2 <= 0)
return;
isClipped = true;
}
}
screenOffset = offset.y * destPic->_bounds.width() + offset.x;
widthDiff = width1 - width2;
widthDiff2 = destPic->_bounds.width() - width2;
if (destViewPort) {
if (!_saveBack || ((srcPic->_flags & DISPFLAG_800) != 0)) {
backBounds.left = destPic->_bounds.left + offset.x;
backBounds.top = destPic->_bounds.top + offset.y;
backBounds.setWidth(width2);
backBounds.setHeight(height1);
addRectOptSaveRect(destViewPort, 1, backBounds);
} else if (!destViewPort->_addFn) {
if (destViewPort->_rectListCount[destViewPort->_pageIndex] < -1) {
Common::Rect r;
r.left = destPic->_bounds.left + offset.x;
r.top = destPic->_bounds.top + offset.y;
r.setWidth(width2);
r.setHeight(height1);
(*destViewPort->_rectListPtr[destViewPort->_pageIndex]).push_back(r);
++destViewPort->_rectListCount[destViewPort->_pageIndex];
}
} else {
int xs = offset.x + destPic->_bounds.left;
int ys = offset.y + destPic->_bounds.top;
backBounds = Common::Rect(xs, ys, xs + width2, ys + height1);
(this->*destViewPort->_addFn)(destViewPort, destViewPort->_bounds.top, backBounds);
}
}
if (srcFlags & DISPFLAG_1000) {
srcImgData = srcPic->_imgData + (var4C << 14) + _screenOffset;
for (uint idx = 0; idx < srcPic->_maskData; ++idx) {
if (var4C < 4) {
EMSMapPageHandle(srcPic->_planeSize, srcPic->_imgData[idx], var4C);
++var4C;
}
}
} else {
srcImgData = srcPic->_imgData;
}
if (destFlags & DISPFLAG_1000) {
destImgData = destPic->_imgData + (var4C << 14) + _screenOffset;
for (uint idx = 0; idx < srcPic->_maskData; ++idx) {
if (var4C < 4) {
EMSMapPageHandle(destPic->_planeSize, destPic->_imgData[idx], var4C);
++var4C;
}
}
} else {
destImgData = destPic->_imgData;
}
_SVGAPage = _SVGAReset;
if (srcPic->_select != 0xff)
return;
if (destFlags & DISPFLAG_CURSOR) {
cursorData = new byte[width2 * height1];
Common::fill(cursorData, cursorData + width2 * height1, 0);
destImgData = cursorData;
}
if (srcPic->_pick == 0xff) {
if (srcFlags & DISPFLAG_8) {
error("TODO: sDrawPic");
} else {
// loc_258B8
srcP = srcImgData + srcOffset;
if (destFlags & DISPFLAG_8) {
// loc_258D8
destP = destImgData + screenOffset;
if (srcFlags & DISPFLAG_2) {
// loc_25652
srcP = srcImgData + srcOffset;
if (destFlags & DISPFLAG_8) {
// loc_2566F
if (srcFlags & DISPFLAG_2) {
// loc_256FA
srcP = (byte *)_screenSurface.getPixels() + srcOffset;
for (int yp = 0; yp < height1; ++yp) {
for (int xp = 0; xp < width2; ++width2, ++srcP, ++destP) {
pixel = *srcP;
if (pixel)
*destP = pixel;
}
srcP += widthDiff;
destP += widthDiff2;
}
} else {
// loc_25706
for (int yp = 0; yp < height1; ++yp) {
Common::copy(srcP, srcP + width2, destP);
srcP += width2 + widthDiff;
destP += width2 + widthDiff2;
}
}
} else {
// loc_25773
destP = destImgData + screenOffset;
if (srcFlags & DISPFLAG_2) {
// loc_25793
for (int yp = 0; yp < height1; ++yp) {
Common::copy(srcP, srcP + width2, destP);
srcP += width2 + widthDiff;
destP += width2 + widthDiff2;
}
} else {
// loc_25829
destP = (byte *)_screenSurface.getPixels() + screenOffset;
for (int yp = 0; yp < height1; ++yp) {
Common::copy(srcP, srcP + width2, destP);
srcP += width2 + widthDiff;
destP += width2 + widthDiff2;
}
}
}
} else {
// loc_25D40
if (srcFlags & DISPFLAG_100) {
// loc_25D4A
} else {
// loc_2606D
destP = (byte *)_screenSurface.getPixels() + screenOffset;
for (int yp = 0; yp < height1; ++yp) {
Common::copy(srcP, srcP + width2, destP);
destP += width2 + widthDiff2;
srcP += width2 + widthDiff;
}
}
}
} else {
// loc_2615E
destP = destImgData + screenOffset;
if (srcFlags & DISPFLAG_2) {
// loc_2617e
if (srcFlags & DISPFLAG_100) {
// loc_26188
srcP = srcImgData;
if (isClipped) {
// loc_26199
error("TODO: var22/var24/var2C not initialised before use?");
if (var22 < 0) {
var22 = -var22;
} else {
var22 = 0;
}
var26 = var22 + width2;
if (var24 < 0) {
var24 = -var24;
} else {
var24 = 0;
}
width2 = srcPic->_bounds.width();
height1 = var24 + height1;
byteVal = 0;
for (int yp = 0; yp < height1; ++yp) {
for (int xp = 0; xp < width2; ++xp) {
if (byteVal2 <= 0) {
byteVal = *srcP++;
if (byteVal & 0x80) {
byteVal &= 0x7f;
byteVal2 = *srcP++;
if (!byteVal2)
byteVal2 = width2;
}
}
if (yp >= var24 && xp >= var22 && xp < var26) {
if (byteVal > 0)
*destP = byteVal;
++destP;
}
}
if (yp >= var24)
destP += widthDiff2;
}
} else {
// loc_262BE
byteVal = 0;
for (int yp = 0; yp < height1; ++yp) {
for (int xp = 0; xp < width2; ++xp) {
byteVal2 = 0;
if (!byteVal2) {
byteVal = *++srcP;
if (byteVal & 0x80) {
byteVal &= 0x7f;
byteVal2 = *srcP++;
if (!byteVal2)
byteVal2 = width2;
}
}
if (byteVal > 0)
*destP = byteVal;
++destP;
--byteVal2;
}
destP += widthDiff2;
}
}
} else {
// loc_2637F
// Copy with transparency
for (int yp = 0; yp < height1; ++yp) {
for (int xp = 0; xp < width2; ++xp, ++srcP, ++destP) {
if (*srcP != 0)
*destP = *srcP;
}
destP += widthDiff2;
srcP += widthDiff;
}
}
} else {
if (srcFlags & 0x100) {
srcP = srcImgData;
if (isClipped) {
// loc_26424
} else {
// loc_26543
}
} else {
for (int yp = 0; yp < height1; ++yp) {
Common::copy(srcP, srcP + width2, destP);
destP += width2 + widthDiff2;
srcP += width2 + widthDiff;
}
}
}
}
}
} else {
// loc_26666
if (srcPic->_pick == 0) {
// loc_2727A
byte onOff = srcPic->_onOff;
if (srcFlags & DISPFLAG_2) {
if (!(srcFlags & DISPFLAG_8)) {
srcP = srcImgData + srcOffset;
if (destFlags & DISPFLAG_8) {
// loc_272C3
error("TODO");
} else {
destP = destImgData + screenOffset;
for (int yp = 0; yp < height1; ++yp) {
for (int xp = 0; xp < width2; ++xp, ++destP) {
if ((int8)*srcP++ < 0)
*destP = onOff;
}
destP += widthDiff2;
srcP += widthDiff;
}
}
}
} else {
// loc_27477
if (destFlags & DISPFLAG_8) {
// loc_27481
destP = (byte *)_screenSurface.getPixels() + screenOffset;
for (int yp = 0; yp < height1; ++yp) {
Common::fill(destP, destP + width2, onOff);
destP += width2 + widthDiff2;
}
} else {
// loc_2753C
destP = destImgData + screenOffset;
for (int yp = 0; yp < height1; ++yp) {
Common::fill(destP, destP + width2, onOff);
destP += width2 + widthDiff2;
}
}
}
} else {
// loc_26673
// TODO
}
}
if (cursorData) {
_vm->_eventsManager.setCursor(cursorData, width2, height1);
delete[] cursorData;
}
}
void GraphicsManager::fillPic(DisplayResource *display, byte onOff) {
PictureResource *pic;
if (display->_flags & DISPFLAG_VIEWPORT) {
pic = ((ViewPortResource *)display)->_currentPic;
} else {
pic = (PictureResource *)display;
}
PictureResource picResource;
picResource._flags = 0;
picResource._select = 0xff;
picResource._pick = 0;
picResource._onOff = onOff;
picResource._bounds = pic->_bounds;
sDrawPic(&picResource, display, Common::Point());
}
/**
* Queues the given picture for display
*/
void GraphicsManager::sDisplayPic(PictureResource *pic) {
if (pic->_flags & DISPFLAG_8) {
_vm->_eventsManager._intPtr.field2A = READ_LE_UINT32(pic->_imgData) >> _sImageShift;
}
_vm->_eventsManager._intPtr._flipWait = true;
}
void GraphicsManager::EMSMapPageHandle(int v1, int v2, int v3) {
// TODO
}
void GraphicsManager::flipPage() {
Common::Array<ViewPortResource *> &viewPorts = _viewPortListPtr->_entries;
bool flipFlag = false;
for (uint idx = 0; idx < viewPorts.size(); ++idx) {
if (viewPorts[idx]->_flags & DISPFLAG_20) {
if ((viewPorts[idx]->_flags & (DISPFLAG_8 || DISPFLAG_1))
== (DISPFLAG_8 || DISPFLAG_1)) {
if (_planeSelect == idx)
sDisplayPic(viewPorts[idx]->_currentPic);
flipFlag = true;
}
}
if (flipFlag) {
ViewPortResource &viewPort = *viewPorts[idx];
viewPort._lastPage = viewPort._pageIndex;
++viewPort._pageIndex;
if (viewPort._pageIndex >= viewPort._pageCount)
viewPort._pageIndex = 0;
assert(viewPort._pageIndex < 2);
viewPort._currentPic = viewPort._pages[viewPort._pageIndex];
viewPort._flags = (viewPort._flags & ~DISPFLAG_8) | DISPFLAG_40;
}
}
}
void GraphicsManager::restoreBack(Common::Array<Common::Rect> &rectList, int rectListCount,
PictureResource *srcPic, PictureResource *destPic) {
// WORKAROUND: Since _backgroundPage can point to a resource freed at the end of display methods,
// I'm now explicitly resetting it to null in screenReset(), so at this point it can be null
if (!srcPic)
return;
bool saveBack = _saveBack;
_saveBack = false;
if (rectListCount == -1) {
sDrawPic(srcPic, destPic, Common::Point());
} else {
for (int i = rectListCount - 1; i >= 0; --i) {
_clipPtr = &rectList[i];
sDrawPic(srcPic, destPic, Common::Point());
}
}
_saveBack = saveBack;
}
void GraphicsManager::clearPalette() {
byte palette[768];
Common::fill(&palette[0], &palette[768], 0);
g_system->getPaletteManager()->setPalette(&palette[0], 0, 256);
}
void GraphicsManager::setPalette(const byte *palette, int start, int count) {
g_system->getPaletteManager()->setPalette(palette, start, count);
}
void GraphicsManager::resetPalette() {
for (int i = 0; i < 256; ++i)
setColor(i, 0, 0, 0);
_vm->_eventsManager._intPtr.field38 = 1;
_vm->_eventsManager._intPtr._hasPalette = true;
}
void GraphicsManager::setColor(int idx, byte r, byte g, byte b) {
byte *vgaP = &_VGAColors[idx * 3];
vgaP[0] = r;
vgaP[1] = g;
vgaP[2] = b;
_vm->_eventsManager._intPtr._palStartIndex = MIN(_vm->_eventsManager._intPtr._palStartIndex, idx);
_vm->_eventsManager._intPtr._palEndIndex = MAX(_vm->_eventsManager._intPtr._palEndIndex, idx);
}
void GraphicsManager::screenReset() {
resetPalette();
_backgroundPage = NULL;
(*_vPort)->setupViewPort();
fillPic(*_vPort, 0);
(*_vPort)->_parent->_flags |= DISPFLAG_8;
// Flip
flipPage();
_vm->_eventsManager.sWaitFlip();
}
} // End of namespace Voyeur
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