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scummvm/engines/hopkins/graphics.cpp
Eugene Sandulenko abea37c9bb
ALL: Update ScummVM project license to GPLv3+
2021-12-26 18:48:43 +01:00

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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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "hopkins/graphics.h"
#include "hopkins/files.h"
#include "hopkins/globals.h"
#include "hopkins/hopkins.h"
#include "common/system.h"
#include "graphics/palette.h"
#include "image/pcx.h"
#include "common/file.h"
#include "common/rect.h"
#include "engines/util.h"
namespace Hopkins {
GraphicsManager::GraphicsManager(HopkinsEngine *vm) {
_vm = vm;
_lockCounter = 0;
_initGraphicsFl = false;
_screenWidth = _screenHeight = 0;
_screenLineSize = 0;
_palettePixels = nullptr;
_lineNbr = 0;
_videoPtr = nullptr;
_scrollOffset = 0;
_scrollPosX = 0;
_largeScreenFl = false;
_oldScrollPosX = 0;
_backBuffer = nullptr;
_frontBuffer = nullptr;
_screenBuffer = nullptr;
_backupScreen = nullptr;
_showDirtyRects = false;
_lineNbr2 = 0;
_enlargedX = _enlargedY = 0;
_enlargedXFl = _enlargedYFl = false;
_fadeDefaultSpeed = 15;
_fadingFl = false;
_skipVideoLockFl = false;
_scrollStatus = 0;
_minX = 0;
_minY = 20;
_maxX = SCREEN_WIDTH * 2;
_maxY = SCREEN_HEIGHT - 20;
_posXClipped = _posYClipped = 0;
_clipX1 = _clipY1 = 0;
_clipFl = false;
_reduceX = _reducedY = 0;
_zoomOutFactor = 0;
_width = 0;
_specialWidth = 0;
_showZones = false;
_showLines = false;
Common::fill(&_paletteBuffer[0], &_paletteBuffer[PALETTE_SIZE * 2], 0);
Common::fill(&_colorTable[0], &_colorTable[PALETTE_EXT_BLOCK_SIZE], 0);
Common::fill(&_palette[0], &_palette[PALETTE_EXT_BLOCK_SIZE], 0);
Common::fill(&_oldPalette[0], &_oldPalette[PALETTE_EXT_BLOCK_SIZE], 0);
if (_vm->getIsDemo()) {
if (_vm->getPlatform() == Common::kPlatformLinux)
// CHECKME: Should be false?
_manualScroll = true;
else
_manualScroll = false;
_scrollSpeed = 16;
} else {
_manualScroll = false;
_scrollSpeed = 32;
}
_noFadingFl = false;
}
GraphicsManager::~GraphicsManager() {
_vm->_globals->freeMemory(_backBuffer);
_vm->_globals->freeMemory(_frontBuffer);
_vm->_globals->freeMemory(_screenBuffer);
_vm->_globals->freeMemory(_backupScreen);
}
void GraphicsManager::setGraphicalMode(int width, int height) {
if (!_initGraphicsFl) {
Graphics::PixelFormat pixelFormat16(2, 5, 6, 5, 0, 11, 5, 0, 0);
initGraphics(width, height, &pixelFormat16);
// Init surfaces
_backBuffer = _vm->_globals->allocMemory(SCREEN_WIDTH * 2 * SCREEN_HEIGHT);
_frontBuffer = _vm->_globals->allocMemory(SCREEN_WIDTH * 2 * SCREEN_HEIGHT);
_screenBuffer = _vm->_globals->allocMemory(SCREEN_WIDTH * 2 * SCREEN_HEIGHT);
_videoPtr = nullptr;
_screenWidth = width;
_screenHeight = height;
_screenLineSize = SCREEN_WIDTH * 2;
_palettePixels = _paletteBuffer;
_lineNbr = width;
_initGraphicsFl = true;
} else {
error("setGraphicalMode called multiple times");
}
}
/**
* (try to) Lock Screen
*/
void GraphicsManager::lockScreen() {
if (!_skipVideoLockFl) {
if (_lockCounter++ == 0) {
_videoPtr = _screenBuffer;
_screenLineSize = SCREEN_WIDTH * 2;
}
}
}
/**
* (try to) Unlock Screen
*/
void GraphicsManager::unlockScreen() {
assert(_videoPtr);
if (--_lockCounter == 0) {
_videoPtr = nullptr;
}
}
/**
* Clear Screen
*/
void GraphicsManager::clearScreen() {
lockScreen();
assert(_videoPtr);
Common::fill(_screenBuffer, _screenBuffer + _screenLineSize * _screenHeight, 0);
addRefreshRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
unlockScreen();
}
void GraphicsManager::clearVesaScreen() {
Common::fill(_backBuffer, _backBuffer + _screenLineSize * _screenHeight, 0);
Common::fill(_frontBuffer, _frontBuffer + _screenLineSize * _screenHeight, 0);
addDirtyRect(Common::Rect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT));
}
/**
* Load Image
*/
void GraphicsManager::loadImage(const Common::String &file) {
Common::String filename = Common::String::format("%s.PCX", file.c_str());
loadScreen(filename);
initColorTable(165, 170, _palette);
}
/**
* Load VGA Image
*/
void GraphicsManager::loadVgaImage(const Common::String &file) {
setScreenWidth(SCREEN_WIDTH);
clearScreen();
loadPCX320(_backBuffer, file, _palette);
memcpy(_frontBuffer, _backBuffer, 64000);
setScreenWidth(320);
_maxX = 320;
copy16bFromSurfaceScaleX2(_frontBuffer);
addRefreshRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
fadeInBreakout();
}
/**
* Load Screen
*/
void GraphicsManager::loadScreen(const Common::String &file) {
Common::File f;
assert(!_videoPtr);
bool flag = true;
bool fileFoundFl = false;
_vm->_fileIO->searchCat(file, RES_PIC, fileFoundFl);
if (!fileFoundFl) {
if (!f.open(file))
error("loadScreen - %s", file.c_str());
f.seek(0, SEEK_END);
f.close();
flag = false;
}
scrollScreen(0);
loadPCX640(_backBuffer, file, _palette, flag);
_scrollPosX = 0;
_oldScrollPosX = 0;
clearPalette();
if (!_largeScreenFl) {
setScreenWidth(SCREEN_WIDTH);
_maxX = SCREEN_WIDTH;
clearScreen();
display8BitRect(_backBuffer, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0);
} else {
setScreenWidth(SCREEN_WIDTH * 2);
_maxX = SCREEN_WIDTH * 2;
clearScreen();
if (_manualScroll)
display8BitRect(_backBuffer, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0);
}
memcpy(_frontBuffer, _backBuffer, SCREEN_WIDTH * 2 * SCREEN_HEIGHT);
}
void GraphicsManager::initColorTable(int minIndex, int maxIndex, byte *palette) {
for (int idx = 0; idx < 256; ++idx)
_colorTable[idx] = idx;
translateSurface(_colorTable, palette, 256, minIndex, maxIndex);
for (int idx = 0; idx < 256; ++idx) {
byte v = _colorTable[idx];
if (v > 27 || !v)
_colorTable[idx] = 0;
}
_colorTable[0] = 1;
}
/**
* Scroll Screen
*/
void GraphicsManager::scrollScreen(int amount) {
int result = CLIP(amount, 0, SCREEN_WIDTH);
_vm->_events->_startPos.x = result;
_scrollOffset = result;
_scrollPosX = result;
}
void GraphicsManager::translateSurface(byte *destP, const byte *srcP, int count, int minThreshold, int maxThreshold) {
byte *destPosP = destP;
for (int idx = 0; idx < count; ++idx) {
int palIndex = *destPosP;
int srcOffset = 3 * palIndex;
int col1 = srcP[srcOffset] + srcP[srcOffset + 1] + srcP[srcOffset + 2];
for (int idx2 = 0; idx2 < 38; ++idx2) {
srcOffset = 3 * idx2;
int col2 = srcP[srcOffset] + srcP[srcOffset + 1] + srcP[srcOffset + 2];
col2 += minThreshold;
if (col2 < col1)
continue;
col2 -= maxThreshold;
if (col2 > col1)
continue;
*destPosP = (idx2 == 0) ? 1 : idx2;
break;
}
destPosP++;
}
}
void GraphicsManager::fillSurface(byte *surface, byte *col, int size) {
byte dataVal;
byte *dataP = surface;
for (int count = size - 1; count; count--){
dataVal = *dataP;
*dataP = col[dataVal];
dataP++;
}
}
void GraphicsManager::loadPCX640(byte *surface, const Common::String &file, byte *palette, bool typeFlag) {
Common::File f;
Image::PCXDecoder pcxDecoder;
// Clear the passed surface
memset(surface, 0, SCREEN_WIDTH * 2 * SCREEN_HEIGHT);
if (typeFlag) {
// Load PCX from within the PIC resource
if (!f.open("PIC.RES"))
error("Error opening PIC.RES.");
f.seek(_vm->_fileIO->_catalogPos);
} else {
// Load stand alone PCX file
if (!f.open(file))
error("Error opening PCX %s.", file.c_str());
}
// Decode the PCX
if (!pcxDecoder.loadStream(f))
error("Error decoding PCX %s", file.c_str());
const Graphics::Surface *s = pcxDecoder.getSurface();
// Copy out the dimensions and pixels of the decoded surface
_largeScreenFl = s->w > SCREEN_WIDTH;
Common::copy((const byte *)s->getPixels(), (const byte *)s->getBasePtr(0, s->h), surface);
// Copy out the palette
const byte *palSrc = pcxDecoder.getPalette();
Common::copy((const byte *)palSrc, (const byte *)palSrc + PALETTE_BLOCK_SIZE, palette);
f.close();
}
void GraphicsManager::loadPCX320(byte *surface, const Common::String &file, byte *palette) {
Common::File f;
if (!f.open(file))
error("File not found - %s", file.c_str());
size_t filesize = f.size();
f.read(surface, 128);
int imageSize = filesize - 896;
byte *ptr = _vm->_globals->allocMemory(65024);
size_t curBufSize;
int imageNumb;
int imageDataSize;
if (imageSize >= 64000) {
imageNumb = imageSize / 64000 + 1;
imageDataSize = abs(64000 * (imageSize / 64000) - imageSize);
f.read(ptr, 64000);
curBufSize = 64000;
} else {
imageNumb = 1;
imageDataSize = imageSize;
f.read(ptr, imageSize);
curBufSize = imageSize;
}
imageNumb--;
size_t curByteIdx = 0;
for (int i = 0; i < 64000; i++) {
if (curByteIdx == curBufSize) {
curByteIdx = 0;
--imageNumb;
curBufSize = 64000;
if (!imageNumb)
curBufSize = imageDataSize;
f.read(ptr, curBufSize);
}
byte curByte = ptr[curByteIdx++];
if (curByte > 192) {
int repeatCount = curByte - 192;
if (curByteIdx == curBufSize) {
curByteIdx = 0;
--imageNumb;
curBufSize = 64000;
if (imageNumb == 1)
curBufSize = imageDataSize;
f.read(ptr, curBufSize);
}
curByte = ptr[curByteIdx++];
for (; repeatCount; repeatCount--)
surface[i++] = curByte;
--i;
} else {
surface[i] = curByte;
}
}
f.seek(filesize - 768);
f.read(palette, 768);
f.close();
_vm->_globals->freeMemory(ptr);
}
// Clear Palette
void GraphicsManager::clearPalette() {
// As weird as it sounds, this is what the original Linux executable does,
// and not a full array clear.
_paletteBuffer[0] = 0;
}
void GraphicsManager::setScreenWidth(int pitch) {
_lineNbr = _lineNbr2 = pitch;
}
/**
* Copies data from a 8-bit palette surface into the 16-bit screen
*/
void GraphicsManager::display8BitRect(const byte *surface, int xs, int ys, int width, int height, int destX, int destY) {
lockScreen();
assert(_videoPtr);
const byte *srcP = xs + _lineNbr2 * ys + surface;
byte *destP = (byte *)_videoPtr + destX * 2 + _screenLineSize * destY;
for (int yp = 0; yp < height; ++yp) {
// Copy over the line, using the source pixels as lookups into the pixels palette
const byte *lineSrcP = srcP;
byte *lineDestP = destP;
for (int xp = 0; xp < width; ++xp) {
lineDestP[0] = _palettePixels[lineSrcP[0] * 2];
lineDestP[1] = _palettePixels[(lineSrcP[0] * 2) + 1];
lineDestP += 2;
lineSrcP++;
}
// Move to the start of the next line
srcP += _lineNbr2;
destP += _screenLineSize;
}
unlockScreen();
addRefreshRect(destX, destY, destX + width, destY + height);
}
void GraphicsManager::displayScaled8BitRect(const byte *surface, int xp, int yp, int width, int height, int destX, int destY) {
const byte *palette;
byte *loopDestP;
const byte *loopSrcP;
int yCtr;
assert(_videoPtr);
const byte *srcP = surface + xp + 320 * yp;
byte *destP = (byte *)_videoPtr + 30 * _screenLineSize + destX + destX + destX + destX + _screenLineSize * 2 * destY;
int yCount = height;
int xCount = width;
do {
yCtr = yCount;
int xCtr = xCount;
loopSrcP = srcP;
loopDestP = destP;
int savedXCount = xCount;
palette = _palettePixels;
do {
destP[0] = destP[2] = destP[_screenLineSize] = destP[_screenLineSize + 2] = palette[2 * srcP[0]];
destP[1] = destP[3] = destP[_screenLineSize + 1] = destP[_screenLineSize + 3] = palette[(2 * srcP[0]) + 1];
++srcP;
destP += 4;
--xCtr;
} while (xCtr);
xCount = savedXCount;
destP = loopDestP + _screenLineSize * 2;
srcP = loopSrcP + 320;
yCount = yCtr - 1;
} while (yCtr != 1);
addRefreshRect(destX, destY, destX + width, destY + width);
}
/**
* Fade in. the step number is determine by parameter.
*/
void GraphicsManager::fadeIn(const byte *palette, int step, const byte *surface) {
byte palData2[PALETTE_BLOCK_SIZE];
int fadeStep;
if (step > 1)
fadeStep = step;
else
fadeStep = 2;
// Initialize temporary palette
Common::fill(&palData2[0], &palData2[PALETTE_BLOCK_SIZE], 0);
// Set current palette to black
setPaletteVGA256(palData2);
// Loop through fading in the palette
for (int fadeIndex = 0; fadeIndex < fadeStep; ++fadeIndex) {
for (int palOffset = 0; palOffset < PALETTE_BLOCK_SIZE; palOffset += 3) {
palData2[palOffset + 0] = fadeIndex * palette[palOffset + 0] / (fadeStep - 1);
palData2[palOffset + 1] = fadeIndex * palette[palOffset + 1] / (fadeStep - 1);
palData2[palOffset + 2] = fadeIndex * palette[palOffset + 2] / (fadeStep - 1);
}
// Set the transition palette and refresh the screen
setPaletteVGA256(palData2);
display8BitRect(surface, _vm->_events->_startPos.x, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0);
updateScreen();
// Added a delay in order to see the fading
_vm->_events->delay(20);
}
// Set the final palette
setPaletteVGA256(palette);
// Refresh the screen
display8BitRect(surface, _vm->_events->_startPos.x, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0);
updateScreen();
}
/**
* Fade out. the step number is determine by parameter.
*/
void GraphicsManager::fadeOut(const byte *palette, int step, const byte *surface) {
byte palData[PALETTE_BLOCK_SIZE];
if ((step > 1) && (palette) && (!_vm->_events->_escKeyFl)) {
int fadeStep = step;
for (int fadeIndex = 0; fadeIndex < fadeStep; fadeIndex++) {
for (int palOffset = 0; palOffset < PALETTE_BLOCK_SIZE; palOffset += 3) {
palData[palOffset + 0] = (fadeStep - fadeIndex - 1) * palette[palOffset + 0] / (fadeStep - 1);
palData[palOffset + 1] = (fadeStep - fadeIndex - 1) * palette[palOffset + 1] / (fadeStep - 1);
palData[palOffset + 2] = (fadeStep - fadeIndex - 1) * palette[palOffset + 2] / (fadeStep - 1);
}
setPaletteVGA256(palData);
display8BitRect(surface, _vm->_events->_startPos.x, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0);
updateScreen();
_vm->_events->delay(20);
}
}
// No initial palette, or end of fading
for (int i = 0; i < PALETTE_BLOCK_SIZE; i++)
palData[i] = 0;
setPaletteVGA256(palData);
display8BitRect(surface, _vm->_events->_startPos.x, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0);
updateScreen();
}
/**
* Short fade in. The step number is 1, the default step number is also set to 1.
*/
void GraphicsManager::fadeInShort() {
_fadeDefaultSpeed = 1;
fadeIn(_palette, 1, (const byte *)_frontBuffer);
}
/**
* Short fade out. The step number is 1, the default step number is also set to 1.
*/
void GraphicsManager::fadeOutShort() {
_fadeDefaultSpeed = 1;
fadeOut(_palette, 1, (const byte *)_frontBuffer);
}
/**
* Long fade in. The step number is 20, the default step number is also set to 15.
*/
void GraphicsManager::fadeInLong() {
_fadeDefaultSpeed = 15;
fadeIn(_palette, 20, (const byte *)_frontBuffer);
}
/**
* Long fade out. The step number is 20, the default step number is also set to 15.
*/
void GraphicsManager::fadeOutLong() {
_fadeDefaultSpeed = 15;
fadeOut(_palette, 20, (const byte *)_frontBuffer);
}
/**
* Fade in. The step number used is the default step number.
*/
void GraphicsManager::fadeInDefaultLength(const byte *surface) {
assert(surface);
fadeIn(_palette, _fadeDefaultSpeed, surface);
}
/**
* Fade out. The step number used is the default step number.
*/
void GraphicsManager::fadeOutDefaultLength(const byte *surface) {
assert(surface);
fadeOut(_palette, _fadeDefaultSpeed, surface);
}
/**
* Fade in used by for the breakout mini-game
*/
void GraphicsManager::fadeInBreakout() {
setPaletteVGA256(_palette);
copy16bFromSurfaceScaleX2(_frontBuffer);
updateScreen();
}
/**
* Fade out used by for the breakout mini-game
*/
void GraphicsManager::fadeOutBreakout() {
byte palette[PALETTE_EXT_BLOCK_SIZE];
memset(palette, 0, PALETTE_EXT_BLOCK_SIZE);
setPaletteVGA256(palette);
copy16bFromSurfaceScaleX2(_frontBuffer);
updateScreen();
}
void GraphicsManager::setPaletteVGA256(const byte *palette) {
changePalette(palette);
}
void GraphicsManager::setPaletteVGA256WithRefresh(const byte *palette, const byte *surface) {
changePalette(palette);
display8BitRect(surface, _vm->_events->_startPos.x, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0);
updateScreen();
}
void GraphicsManager::setColorPercentage(int palIndex, int r, int g, int b) {
int palOffset = 3 * palIndex;
_palette[palOffset] = 255 * r / 100;
_palette[palOffset + 1] = 255 * g / 100;
_palette[palOffset + 2] = 255 * b / 100;
}
void GraphicsManager::setColorPercentage2(int palIndex, int r, int g, int b) {
int rv = 255 * r / 100;
int gv = 255 * g / 100;
int bv = 255 * b / 100;
int palOffset = 3 * palIndex;
_palette[palOffset] = rv;
_palette[palOffset + 1] = gv;
_palette[palOffset + 2] = bv;
WRITE_UINT16(&_paletteBuffer[2 * palIndex], mapRGB(rv, gv, bv));
}
void GraphicsManager::changePalette(const byte *palette) {
const byte *srcP = &palette[0];
for (int idx = 0; idx < PALETTE_SIZE; ++idx, srcP += 3) {
WRITE_UINT16(&_paletteBuffer[2 * idx], mapRGB(srcP[0], srcP[1], srcP[2]));
}
}
uint16 GraphicsManager::mapRGB(byte r, byte g, byte b) {
Graphics::PixelFormat format = g_system->getScreenFormat();
return (r >> format.rLoss) << format.rShift
| (g >> format.gLoss) << format.gShift
| (b >> format.bLoss) << format.bShift;
}
void GraphicsManager::updateScreen() {
// Display any aras of the screen that need refreshing
displayDirtyRects();
displayRefreshRects();
// Extra checks for debug information
if (_showZones)
displayZones();
if (_showLines)
displayLines();
// Update the screen
g_system->updateScreen();
debugC(1, kDebugGraphics, "updateScreen()");
}
void GraphicsManager::copyWinscanVbe3(const byte *srcData, byte *destSurface) {
byte srcByte;
byte destLen1;
byte *destSlice1P;
byte destLen2;
byte *destSlice2P;
int rleValue = 0;
int destOffset = 0;
const byte *srcP = srcData;
for (;;) {
srcByte = srcP[0];
if (srcByte == kByteStop)
return;
if (srcByte == 211) {
destLen1 = srcP[1];
rleValue = srcP[2];
destSlice1P = destOffset + destSurface;
destOffset += destLen1;
memset(destSlice1P, rleValue, destLen1);
srcP += 3;
} else if (srcByte < 222) {
if (srcByte > 211) {
destLen2 = (byte)(srcP[0] + 45);
rleValue = srcP[1];
destSlice2P = destOffset + destSurface;
destOffset += destLen2;
memset(destSlice2P, rleValue, destLen2);
srcP += 2;
} else {
destSurface[destOffset] = srcByte;
++srcP;
++destOffset;
}
} else if (srcByte < kSetOffset) {
destOffset += (byte)(srcP[0] + 35);
srcP++;
} else if (srcByte == k8bVal) {
destOffset += srcP[1];
srcP += 2;
} else if (srcByte == k16bVal) {
destOffset += READ_LE_UINT16(srcP + 1);
srcP += 3;
} else {
destOffset += READ_LE_UINT32(srcP + 1);
srcP += 5;
}
}
}
void GraphicsManager::copyVideoVbe16(const byte *srcData) {
const byte *srcP = srcData;
int destOffset = 0;
lockScreen();
assert(_videoPtr);
for (;;) {
byte srcByte = srcP[0];
if (srcByte >= 222) {
if (srcByte == kByteStop)
break;
if (srcByte < kSetOffset) {
destOffset += srcByte - 221;
srcByte = *++srcP;
} else if (srcByte == k8bVal) {
destOffset += srcP[1];
srcByte = srcP[2];
srcP += 2;
} else if (srcByte == k16bVal) {
destOffset += READ_LE_UINT16(srcP + 1);
srcByte = srcP[3];
srcP += 3;
} else {
destOffset += READ_LE_UINT32(srcP + 1);
srcByte = srcP[5];
srcP += 5;
}
}
if (destOffset > SCREEN_WIDTH * SCREEN_HEIGHT) {
warning("HACK: Stopping anim, out of bounds - 0x%x %d", srcByte, destOffset);
break;
}
if (srcByte > 210) {
if (srcByte == 211) {
int pixelCount = srcP[1];
int pixelIndex = srcP[2];
byte *destP = (byte *)_videoPtr + destOffset * 2;
destOffset += pixelCount;
while (pixelCount--) {
destP[0] = _palettePixels[2 * pixelIndex];
destP[1] = _palettePixels[(2 * pixelIndex) + 1];
destP += 2;
}
srcP += 3;
} else {
int pixelCount = srcByte - 211;
int pixelIndex = srcP[1];
byte *destP = (byte *)_videoPtr + destOffset * 2;
destOffset += pixelCount;
while (pixelCount--) {
destP[0] = _palettePixels[2 * pixelIndex];
destP[1] = _palettePixels[(2 * pixelIndex) + 1];
destP += 2;
}
srcP += 2;
}
} else {
byte *destP = (byte *)_videoPtr + destOffset * 2;
destP[0] = _palettePixels[2 * srcByte];
destP[1] = _palettePixels[(2 * srcByte) + 1];
++srcP;
++destOffset;
}
}
unlockScreen();
}
void GraphicsManager::copyVideoVbe16a(const byte *srcData) {
byte srcByte;
int destOffset = 0;
const byte *srcP = srcData;
lockScreen();
for (;;) {
srcByte = srcP[0];
if (srcByte == kByteStop)
break;
if (srcP[0] > kByteStop) {
if (srcByte == k8bVal) {
destOffset += srcP[1];
srcByte = srcP[2];
srcP += 2;
} else if (srcByte == k16bVal) {
destOffset += READ_LE_UINT16(srcP + 1);
srcByte = srcP[3];
srcP += 3;
} else {
destOffset += READ_LE_UINT32(srcP + 1);
srcByte = srcP[5];
srcP += 5;
}
}
WRITE_LE_UINT16((byte *)_videoPtr + destOffset * 2, READ_LE_UINT16(_palettePixels + 2 * srcByte));
++srcP;
++destOffset;
}
unlockScreen();
}
void GraphicsManager::copySurfaceRect(const byte *srcSurface, byte *destSurface, int xs, int ys, int width, int height) {
const byte *srcP;
byte *destP;
int rowCount;
int rowCount2;
// TODO: This code in the original is potentially dangerous, as it doesn't clip the area to within
// the screen, and so thus can read areas outside of the allocated surface buffer
srcP = xs + _lineNbr2 * ys + srcSurface;
destP = destSurface;
rowCount = height;
do {
rowCount2 = rowCount;
if (width & 1) {
memcpy(destP, srcP, width);
srcP += width;
destP += width;
} else if (width & 2) {
for (int i = width >> 1; i; --i) {
destP[0] = srcP[0];
destP[1] = srcP[1];
srcP += 2;
destP += 2;
}
} else {
memcpy(destP, srcP, 4 * (width >> 2));
srcP += 4 * (width >> 2);
destP += 4 * (width >> 2);
}
srcP = _lineNbr2 + srcP - width;
rowCount = rowCount2 - 1;
} while (rowCount2 != 1);
}
/**
* Draws a sprite onto the screen
* @param surface Destination surface
* @param spriteData The raw data for a sprite set
* @param xp X co-ordinate. For some reason, starts from 300 = first column
* @param yp Y co-ordinate. FOr some reason, starts from 300 = top row
* @param spriteIndex Index of the sprite to draw
*/
void GraphicsManager::drawVesaSprite(byte *surface, const byte *spriteData, int xp, int yp, int spriteIndex) {
// Get a pointer to the start of the desired sprite
const byte *spriteP = spriteData + 3;
for (int i = spriteIndex; i; --i)
spriteP += READ_LE_UINT32(spriteP) + 16;
_posXClipped = 0;
_posYClipped = 0;
_clipFl = false;
spriteP += 4;
int width = READ_LE_UINT16(spriteP);
spriteP += 2;
int height = READ_LE_UINT16(spriteP);
// Clip X
_clipX1 = width;
if ((xp + width) <= _minX + 300)
return;
if (xp < _minX + 300) {
_posXClipped = _minX + 300 - xp;
_clipFl = true;
}
// Clip Y
_clipY1 = height;
if (yp <= 0)
return;
if (yp < _minY + 300) {
_posYClipped = _minY + 300 - yp;
_clipFl = true;
}
// Clip X1
if (xp >= _maxX + 300)
return;
if (xp + width > _maxX + 300) {
int xAmount = width + 10 - (xp + width - (_maxX + 300));
if (xAmount <= 10)
return;
_clipX1 = xAmount - 10;
_clipFl = true;
}
// Clip Y1
if (yp >= _maxY + 300)
return;
if (yp + height > _maxY + 300) {
int yAmount = height + 10 - (yp + height - (_maxY + 300));
if (yAmount <= 10)
return;
// _clipY1 is always positive thanks to the previous check
_clipY1 = yAmount - 10;
_clipFl = true;
}
// Sprite display
// Set up source
spriteP += 6;
int srcOffset = READ_LE_UINT16(spriteP);
spriteP += 4;
const byte *srcP = spriteP;
spriteP += srcOffset;
// Set up surface destination
byte *destP = surface + (yp - 300) * _lineNbr2 + (xp - 300);
// Handling for clipped versus non-clipped
if (_clipFl) {
// Clipped version
for (int yc = 0; yc < _clipY1; ++yc, destP += _lineNbr2) {
byte *tempDestP = destP;
byte byteVal;
int xc = 0;
while ((byteVal = *srcP) != 253) {
++srcP;
width = READ_LE_UINT16(srcP);
srcP += 2;
if (byteVal == 254) {
// Copy pixel range
for (int xv = 0; xv < width; ++xv, ++xc, ++spriteP, ++tempDestP) {
if (_posYClipped == 0 && xc >= _posXClipped && xc < _clipX1)
*tempDestP = *spriteP;
}
} else {
// Skip over bytes
tempDestP += width;
xc += width;
}
}
if (_posYClipped > 0)
--_posYClipped;
srcP += 3;
}
} else {
// Non-clipped
for (int yc = 0; yc < height; ++yc, destP += _lineNbr2) {
byte *tempDestP = destP;
byte byteVal;
while ((byteVal = *srcP) != 253) {
++srcP;
width = READ_LE_UINT16(srcP);
srcP += 2;
if (byteVal == 254) {
// Copy pixel range
Common::copy(spriteP, spriteP + width, tempDestP);
spriteP += width;
}
tempDestP += width;
}
// Skip over control byte and width
srcP += 3;
}
}
}
void GraphicsManager::endDisplayBob() {
for (int idx = 1; idx <= 20; ++idx) {
if (_vm->_animMan->_animBqe[idx]._enabledFl)
_vm->_objectsMan->hideBob(idx);
}
_vm->_events->refreshScreenAndEvents();
_vm->_events->refreshScreenAndEvents();
for (int idx = 1; idx <= 20; ++idx) {
if (_vm->_animMan->_animBqe[idx]._enabledFl)
_vm->_objectsMan->resetBob(idx);
}
for (int idx = 1; idx < 36; ++idx) {
_vm->_objectsMan->_lockedAnims[idx]._enableFl = false;
}
for (int idx = 1; idx <= 20; ++idx) {
_vm->_animMan->_animBqe[idx]._enabledFl = false;
}
}
void GraphicsManager::displayAllBob() {
for (int idx = 1; idx <= 20; ++idx) {
if (_vm->_animMan->_animBqe[idx]._enabledFl)
_vm->_objectsMan->displayBob(idx);
}
}
void GraphicsManager::resetDirtyRects() {
_dirtyRects.clear();
}
void GraphicsManager::resetRefreshRects() {
_refreshRects.clear();
}
// Add a game area dirty rectangle
void GraphicsManager::addDirtyRect(int x1, int y1, int x2, int y2) {
x1 = CLIP(x1, _minX, _maxX);
y1 = CLIP(y1, _minY, _maxY);
x2 = CLIP(x2, _minX, _maxX);
y2 = CLIP(y2, _minY, _maxY);
if ((x2 > x1) && (y2 > y1))
addRectToArray(_dirtyRects, Common::Rect(x1, y1, x2, y2));
}
// Add a refresh rect
void GraphicsManager::addRefreshRect(int x1, int y1, int x2, int y2) {
x1 = MAX(x1, 0);
y1 = MAX(y1, 0);
x2 = MIN(x2, SCREEN_WIDTH);
y2 = MIN(y2, SCREEN_HEIGHT);
if ((x2 > x1) && (y2 > y1))
addRectToArray(_refreshRects, Common::Rect(x1, y1, x2, y2));
}
void GraphicsManager::addRectToArray(Common::Array<Common::Rect> &rects, const Common::Rect &newRect) {
// Scan for an intersection with existing rects
uint rectIndex;
for (rectIndex = 0; rectIndex < rects.size(); ++rectIndex) {
Common::Rect &r = rects[rectIndex];
if (r.intersects(newRect)) {
// Rect either intersects or is completely inside existing one, so extend existing one as necessary
r.extend(newRect);
break;
}
}
if (rectIndex == rects.size()) {
// Rect not intersecting any existing one, so add it in
assert(rects.size() < DIRTY_RECTS_SIZE);
rects.push_back(newRect);
}
// Take care of merging the existing rect list. This is done as a separate check even if
// a previous extending above has been done, since the merging of the new rect above may
// result in further rects now able to be merged
for (int srcIndex = rects.size() - 1; srcIndex > 0; --srcIndex) {
const Common::Rect &srcRect = rects[srcIndex];
// Loop through all the other rects to see if it intersects them
for (int destIndex = srcIndex - 1; destIndex >= 0; --destIndex) {
if (rects[destIndex].intersects(srcRect)) {
// Found an intersection, so extend the found one, and delete the original
rects[destIndex].extend(srcRect);
rects.remove_at(srcIndex);
break;
}
}
}
}
// Draw any game dirty rects onto the screen intermediate surface
void GraphicsManager::displayDirtyRects() {
if (_dirtyRects.size() == 0)
return;
lockScreen();
// Refresh the entire screen
for (uint idx = 0; idx < _dirtyRects.size(); ++idx) {
Common::Rect &r = _dirtyRects[idx];
Common::Rect dstRect;
if (_vm->_events->_breakoutFl) {
displayScaled8BitRect(_frontBuffer, r.left, r.top, r.right - r.left, r.bottom - r.top, r.left, r.top);
dstRect.left = r.left * 2;
dstRect.top = r.top * 2 + 30;
dstRect.setWidth((r.right - r.left) * 2);
dstRect.setHeight((r.bottom - r.top) * 2);
} else if (r.right > _vm->_events->_startPos.x && r.left < _vm->_events->_startPos.x + SCREEN_WIDTH) {
r.left = MAX<int16>(r.left, _vm->_events->_startPos.x);
r.right = MIN<int16>(r.right, (int16)_vm->_events->_startPos.x + SCREEN_WIDTH);
display8BitRect(_frontBuffer, r.left, r.top, r.right - r.left, r.bottom - r.top, r.left - _vm->_events->_startPos.x, r.top);
dstRect.left = r.left - _vm->_events->_startPos.x;
dstRect.top = r.top;
dstRect.setWidth(r.right - r.left);
dstRect.setHeight(r.bottom - r.top);
}
// If it's a valid rect, then add it to the list of areas to refresh on the screen
if (dstRect.isValidRect() && dstRect.width() > 0 && dstRect.height() > 0)
addRectToArray(_refreshRects, dstRect);
}
unlockScreen();
resetDirtyRects();
}
void GraphicsManager::displayRefreshRects() {
debugC(1, kDebugGraphics, "displayRefreshRects() start");
Graphics::Surface *screenSurface = nullptr;
if (_showDirtyRects) {
screenSurface = g_system->lockScreen();
g_system->copyRectToScreen(_screenBuffer, _screenLineSize, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
debugC(1, kDebugGraphics, "\tcopyRectToScreen(_screenBuffer, %d, %d, %d, %d, %d) - Full Blit", _screenLineSize, 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
}
// Loop through copying over any specified rects to the screen
for (uint idx = 0; idx < _refreshRects.size(); ++idx) {
const Common::Rect &r = _refreshRects[idx];
byte *srcP = _screenBuffer + _screenLineSize * r.top + (r.left * 2);
g_system->copyRectToScreen(srcP, _screenLineSize, r.left, r.top, r.width(), r.height());
debugC(1, kDebugGraphics, "\tcopyRectToScreen(_screenBuffer[%d][%d], %d, %d, %d, %d, %d) - Rect Blit", (r.left * 2), (_screenLineSize * r.top), _screenLineSize, r.left, r.top, r.width(), r.height());
if (_showDirtyRects)
screenSurface->frameRect(r, 0xffffff);
}
if (_showDirtyRects)
g_system->unlockScreen();
resetRefreshRects();
debugC(1, kDebugGraphics, "displayRefreshRects() end");
}
/**
* Display any zones for the current room
*/
void GraphicsManager::displayZones() {
Graphics::Surface *screenSurface = g_system->lockScreen();
for (int bobZoneId = 0; bobZoneId <= 48; bobZoneId++) {
int bobId = _vm->_linesMan->_bobZone[bobZoneId];
if (bobId) {
// Get the rectangle for the zone
Common::Rect r(_vm->_objectsMan->_bob[bobId]._oldX, _vm->_objectsMan->_bob[bobId]._oldY,
_vm->_objectsMan->_bob[bobId]._oldX + _vm->_objectsMan->_bob[bobId]._oldWidth,
_vm->_objectsMan->_bob[bobId]._oldY + _vm->_objectsMan->_bob[bobId]._oldHeight);
displayDebugRect(screenSurface, r, 0xff0000);
}
}
for (int squareZoneId = 0; squareZoneId <= 99; squareZoneId++) {
if (_vm->_linesMan->_zone[squareZoneId]._enabledFl && _vm->_linesMan->_squareZone[squareZoneId]._enabledFl) {
Common::Rect r(_vm->_linesMan->_squareZone[squareZoneId]._left, _vm->_linesMan->_squareZone[squareZoneId]._top,
_vm->_linesMan->_squareZone[squareZoneId]._right, _vm->_linesMan->_squareZone[squareZoneId]._bottom);
displayDebugRect(screenSurface, r, 0x00ff00);
}
}
g_system->unlockScreen();
}
/**
* Display any zones for the current room
*/
void GraphicsManager::displayLines() {
Graphics::Surface *screenSurface = g_system->lockScreen();
for (int lineIndex = 0; lineIndex < _vm->_linesMan->_linesNumb; lineIndex++) {
int i = 0;
do {
int x = _vm->_linesMan->_lineItem[lineIndex]._lineData[i] - _scrollPosX;
int y = _vm->_linesMan->_lineItem[lineIndex]._lineData[i+1];
if (x >= 0 && x < SCREEN_WIDTH && y >= 0 && y < SCREEN_HEIGHT) {
WRITE_UINT16(screenSurface->getBasePtr(x, y), 0xffff);
}
i += 2;
}
while(_vm->_linesMan->_lineItem[lineIndex]._lineData[i] != -1);
}
g_system->unlockScreen();
}
void GraphicsManager::displayDebugRect(Graphics::Surface *surface, const Common::Rect &srcRect, uint32 color) {
Common::Rect r = srcRect;
// Move for scrolling offset and adjust to crop on-screen
r.translate(-_scrollPosX, 0);
r.left = MAX(r.left, (int16)0);
r.top = MAX(r.top, (int16)0);
r.right = MIN(r.right, (int16)SCREEN_WIDTH);
r.bottom = MIN(r.bottom, (int16)SCREEN_HEIGHT);
// If there's an on-screen portion, display it
if (r.isValidRect())
surface->frameRect(r, color);
}
/**
* Fast Display of either a compressed or vesa sprite
*/
void GraphicsManager::fastDisplay(const byte *spriteData, int xp, int yp, int spriteIndex, bool addSegment) {
int width = _vm->_objectsMan->getWidth(spriteData, spriteIndex);
int height = _vm->_objectsMan->getHeight(spriteData, spriteIndex);
if (*spriteData == 78) {
drawCompressedSprite(_backBuffer, spriteData, xp + 300, yp + 300, spriteIndex, 0, 0, false);
drawCompressedSprite(_frontBuffer, spriteData, xp + 300, yp + 300, spriteIndex, 0, 0, false);
} else {
drawVesaSprite(_frontBuffer, spriteData, xp + 300, yp + 300, spriteIndex);
drawVesaSprite(_backBuffer, spriteData, xp + 300, yp + 300, spriteIndex);
}
if (addSegment)
addDirtyRect(xp, yp, xp + width, yp + height);
}
void GraphicsManager::fastDisplay2(const byte *objectData, int xp, int yp, int idx, bool addSegment) {
int width = _vm->_objectsMan->getWidth(objectData, idx);
int height = _vm->_objectsMan->getHeight(objectData, idx);
if (*objectData == 78) {
drawCompressedSprite(_backBuffer, objectData, xp + 300, yp + 300, idx, 0, 0, false);
drawCompressedSprite(_frontBuffer, objectData, xp + 300, yp + 300, idx, 0, 0, false);
} else {
drawVesaSprite(_frontBuffer, objectData, xp + 300, yp + 300, idx);
drawVesaSprite(_backBuffer, objectData, xp + 300, yp + 300, idx);
}
if (addSegment)
addDirtyRect(xp, yp, xp + width, yp + height);
}
/**
* Copy from surface to video buffer, scale 2x.
*/
void GraphicsManager::copy16bFromSurfaceScaleX2(const byte *surface) {
byte *palPtr;
int curPixel;
lockScreen();
assert(_videoPtr);
const byte *curSurface = surface;
byte *destPtr = 30 * _screenLineSize + (byte *)_videoPtr;
for (int y = 200; y; y--) {
byte *oldDestPtr = destPtr;
for (int x = 320; x; x--) {
curPixel = 2 * *curSurface;
palPtr = _palettePixels + curPixel;
destPtr[0] = destPtr[2] = destPtr[_screenLineSize] = destPtr[_screenLineSize + 2] = palPtr[0];
destPtr[1] = destPtr[3] = destPtr[_screenLineSize + 1] = destPtr[_screenLineSize + 3] = palPtr[1];
++curSurface;
destPtr += 4;
}
destPtr = _screenLineSize * 2 + oldDestPtr;
}
unlockScreen();
}
void GraphicsManager::restoreSurfaceRect(byte *destSurface, const byte *src, int xp, int yp, int width, int height) {
int yCtr;
byte *destP = xp + _lineNbr2 * yp + destSurface;
int yNext = height;
const byte *srcP = src;
do {
yCtr = yNext;
if (width & 1) {
memcpy(destP, srcP, width);
srcP += width;
destP += width;
} else if (width & 2) {
for (int i = width >> 1; i; --i) {
destP[0] = srcP[0];
destP[1] = srcP[1];
srcP += 2;
destP += 2;
}
} else {
memcpy(destP, srcP, 4 * (width >> 2));
srcP += 4 * (width >> 2);
destP += 4 * (width >> 2);
}
destP = _lineNbr2 + destP - width;
yNext = yCtr - 1;
} while (yCtr != 1);
}
/**
* Compute the value of a parameter plus a given percentage
*/
int GraphicsManager::zoomIn(int val, int percentage) {
if (val)
val += percentage * (long int)val / 100;
return val;
}
/**
* Compute the value of a parameter minus a given percentage
*/
int GraphicsManager::zoomOut(int val, int percentage) {
if (val)
val -= percentage * (long int)val / 100;
return val;
}
// Display 'Perfect?'
void GraphicsManager::drawCompressedSprite(byte *surface, const byte *srcData, int xp300, int yp300, int frameIndex, int zoom1, int zoom2, bool flipFl) {
const byte *spriteStartP = srcData + 3;
for (int i = frameIndex; i; --i)
spriteStartP += READ_LE_UINT32(spriteStartP) + 16;
const byte *spriteSizeP = spriteStartP + 4;
int spriteWidth = READ_LE_INT16(spriteSizeP);
spriteSizeP += 2;
int spriteHeight2 = READ_LE_INT16(spriteSizeP);
int spriteHeight1 = spriteHeight2;
const byte *spritePixelsP = spriteSizeP + 10;
_posXClipped = 0;
_posYClipped = 0;
_clipX1 = 0;
_clipY1 = 0;
if ((xp300 <= _minX) || (yp300 <= _minY) || (xp300 >= _maxX + 300) || (yp300 >= _maxY + 300))
return;
// Clipped values are greater or equal to zero, thanks to the previous test
_clipX1 = _maxX + 300 - xp300;
_clipY1 = _maxY + 300 - yp300;
// _minX is never negative, and should be always 0
// The previous check insures that xp300 it's always greater to it
// After this check, posXClipped is always positive
if (xp300 < _minX + 300)
_posXClipped = _minX + 300 - xp300;
// Ditto.
if (yp300 < _minY + 300)
_posYClipped = _minY + 300 - yp300;
byte *dest1P = xp300 + _lineNbr2 * (yp300 - 300) - 300 + surface;
if (zoom2) {
_enlargedX = 0;
_enlargedY = 0;
_enlargedYFl = false;
_enlargedXFl = false;
_width = spriteWidth;
int zoomedWidth = zoomIn(spriteWidth, zoom2);
int zoomedHeight = zoomIn(spriteHeight1, zoom2);
if (flipFl) {
byte *clippedDestP = zoomedWidth + dest1P;
if (_posYClipped) {
if (_posYClipped < 0 || _posYClipped >= zoomedHeight)
return;
int hiddenHeight = 0;
while (zoomIn(++hiddenHeight, zoom2) < _posYClipped)
;
spritePixelsP += _width * hiddenHeight;
clippedDestP += _lineNbr2 * _posYClipped;
zoomedHeight -= _posYClipped;
}
if (zoomedHeight > _clipY1)
zoomedHeight = _clipY1;
if (_posXClipped) {
if (_posXClipped >= zoomedWidth)
return;
zoomedWidth -= _posXClipped;
}
if (zoomedWidth > _clipX1) {
int clippedZoomedWidth = zoomedWidth - _clipX1;
clippedDestP -= clippedZoomedWidth;
int closestWidth = 0;
while (zoomIn(++closestWidth, zoom2) < clippedZoomedWidth)
;
spritePixelsP += closestWidth;
zoomedWidth = _clipX1;
}
int curHeight;
do {
for (;;) {
curHeight = zoomedHeight;
byte *oldDestP = clippedDestP;
const byte *oldSpritePixelsP = spritePixelsP;
_enlargedXFl = false;
_enlargedX = 0;
for (int i = zoomedWidth; i; _enlargedXFl = false, i--) {
for (;;) {
if (*spritePixelsP)
*clippedDestP = *spritePixelsP;
--clippedDestP;
++spritePixelsP;
if (!_enlargedXFl)
_enlargedX += zoom2;
if (_enlargedX >= 0 && _enlargedX < 100)
break;
_enlargedX -= 100;
--spritePixelsP;
_enlargedXFl = true;
--i;
if (!i)
break;
}
}
spritePixelsP = _width + oldSpritePixelsP;
clippedDestP = _lineNbr2 + oldDestP;
if (!_enlargedYFl)
_enlargedY += zoom2;
if (_enlargedY >= 0 && _enlargedY < 100)
break;
_enlargedY -= 100;
spritePixelsP = oldSpritePixelsP;
_enlargedYFl = true;
zoomedHeight = curHeight - 1;
if (curHeight == 1)
return;
}
_enlargedYFl = false;
zoomedHeight = curHeight - 1;
} while (curHeight != 1);
} else {
if (_posYClipped) {
if (_posYClipped >= zoomedHeight)
return;
int closerHeight = 0;
while (zoomIn(++closerHeight, zoom2) < _posYClipped)
;
spritePixelsP += _width * closerHeight;
dest1P += _lineNbr2 * _posYClipped;
zoomedHeight -= _posYClipped;
}
if (zoomedHeight > _clipY1)
zoomedHeight = _clipY1;
if (_posXClipped) {
if (_posXClipped >= zoomedWidth)
return;
int closerWidth = 0;
while (zoomIn(++closerWidth, zoom2) < _posXClipped)
;
spritePixelsP += closerWidth;
dest1P += _posXClipped;
zoomedWidth = zoomedWidth - _posXClipped;
}
if (zoomedWidth > _clipX1)
zoomedWidth = _clipX1;
int curHeight;
do {
for (;;) {
curHeight = zoomedHeight;
byte *oldDest1P = dest1P;
const byte *oldSpritePixelsP = spritePixelsP;
_enlargedXFl = false;
_enlargedX = 0;
for (int i = zoomedWidth; i; _enlargedXFl = false, i--) {
for (;;) {
if (*spritePixelsP)
*dest1P = *spritePixelsP;
++dest1P;
++spritePixelsP;
if (!_enlargedXFl)
_enlargedX += zoom2;
if (_enlargedX >= 0 && _enlargedX < 100)
break;
_enlargedX -= 100;
--spritePixelsP;
_enlargedXFl = true;
--i;
if (!i)
break;
}
}
spritePixelsP = _width + oldSpritePixelsP;
dest1P = _lineNbr2 + oldDest1P;
if (!_enlargedYFl)
_enlargedY += zoom2;
if (_enlargedY >= 0 && _enlargedY < 100)
break;
_enlargedY -= 100;
spritePixelsP = oldSpritePixelsP;
_enlargedYFl = true;
zoomedHeight = curHeight - 1;
if (curHeight == 1)
return;
}
_enlargedYFl = false;
zoomedHeight = curHeight - 1;
} while (curHeight != 1);
}
} else if (zoom1) {
_reduceX = 0;
_reducedY = 0;
_width = spriteWidth;
_zoomOutFactor = zoom1;
if (zoom1 < 100) {
int zoomedSpriteWidth = zoomOut(spriteWidth, _zoomOutFactor);
if (flipFl) {
byte *curDestP = zoomedSpriteWidth + dest1P;
do {
byte *oldDestP = curDestP;
_reducedY += _zoomOutFactor;
if (_reducedY >= 0 && _reducedY < 100) {
_reduceX = 0;
int curWidth = zoomedSpriteWidth;
for (int i = _width; i; i--) {
_reduceX += _zoomOutFactor;
if (_reduceX >= 0 && _reduceX < 100) {
if (curWidth >= _posXClipped && curWidth < _clipX1 && *spritePixelsP)
*curDestP = *spritePixelsP;
--curDestP;
++spritePixelsP;
--curWidth;
} else {
_reduceX -= 100;
++spritePixelsP;
}
}
curDestP = _lineNbr2 + oldDestP;
} else {
_reducedY -= 100;
spritePixelsP += _width;
}
--spriteHeight2;
} while (spriteHeight2);
} else {
do {
int oldSpriteHeight = spriteHeight2;
byte *oldDest1P = dest1P;
_reducedY += _zoomOutFactor;
if (_reducedY >= 0 && _reducedY < 100) {
_reduceX = 0;
int curX = 0;
for (int i = _width; i; i--) {
_reduceX += _zoomOutFactor;
if (_reduceX >= 0 && _reduceX < 100) {
if (curX >= _posXClipped && curX < _clipX1 && *spritePixelsP)
*dest1P = *spritePixelsP;
++dest1P;
++spritePixelsP;
++curX;
} else {
_reduceX -= 100;
++spritePixelsP;
}
}
spriteHeight2 = oldSpriteHeight;
dest1P = _lineNbr2 + oldDest1P;
} else {
_reducedY -= 100;
spritePixelsP += _width;
}
--spriteHeight2;
} while (spriteHeight2);
}
}
} else {
_width = spriteWidth;
if (flipFl) {
byte *dest2P = spriteWidth + dest1P;
_specialWidth = spriteWidth;
if (_posYClipped) {
if (_posYClipped >= spriteHeight1 || spriteHeight1 < 0)
return;
spritePixelsP += spriteWidth * _posYClipped;
dest2P += _lineNbr2 * _posYClipped;
spriteHeight1 -= _posYClipped;
}
if (spriteHeight1 > _clipY1)
spriteHeight1 = _clipY1;
if (_posXClipped >= spriteWidth)
return;
spriteWidth -= _posXClipped;
if (spriteWidth > _clipX1) {
int clippedWidth = spriteWidth - _clipX1;
spritePixelsP += clippedWidth;
dest2P -= clippedWidth;
spriteWidth = _clipX1;
}
int yCtr2;
do {
yCtr2 = spriteHeight1;
byte *destCopy2P = dest2P;
const byte *spritePixelsCopy2P = spritePixelsP;
for (int xCtr2 = spriteWidth; xCtr2; xCtr2--) {
if (*spritePixelsP)
*dest2P = *spritePixelsP;
++spritePixelsP;
--dest2P;
}
spritePixelsP = _specialWidth + spritePixelsCopy2P;
dest2P = _lineNbr2 + destCopy2P;
spriteHeight1 = yCtr2 - 1;
} while (yCtr2 != 1);
} else {
_specialWidth = spriteWidth;
if (_posYClipped) {
if (_posYClipped >= spriteHeight1 || spriteHeight1 < 0)
return;
spritePixelsP += spriteWidth * _posYClipped;
dest1P += _lineNbr2 * _posYClipped;
spriteHeight1 -= _posYClipped;
}
if (spriteHeight1 > _clipY1)
spriteHeight1 = _clipY1;
if (_posXClipped) {
if (_posXClipped >= spriteWidth)
return;
spritePixelsP += _posXClipped;
dest1P += _posXClipped;
spriteWidth -= _posXClipped;
}
if (spriteWidth > _clipX1)
spriteWidth = _clipX1;
int yCtr1;
do {
yCtr1 = spriteHeight1;
byte *dest1CopyP = dest1P;
const byte *spritePixelsCopyP = spritePixelsP;
for (int xCtr1 = spriteWidth; xCtr1; xCtr1--) {
if (*spritePixelsP)
*dest1P = *spritePixelsP;
++dest1P;
++spritePixelsP;
}
spritePixelsP = _specialWidth + spritePixelsCopyP;
dest1P = _lineNbr2 + dest1CopyP;
spriteHeight1 = yCtr1 - 1;
} while (yCtr1 != 1);
}
}
}
void GraphicsManager::copySurface(const byte *surface, int x1, int y1, int width, int height, byte *destSurface, int destX, int destY) {
int left = x1;
int top = y1;
int croppedWidth = width;
int croppedHeight = height;
if (x1 < _minX) {
croppedWidth = width - (_minX - x1);
left = _minX;
}
if (y1 < _minY) {
croppedHeight = height - (_minY - y1);
top = _minY;
}
if (top + croppedHeight > _maxY)
croppedHeight = _maxY - top;
if (left + croppedWidth > _maxX)
croppedWidth = _maxX - left;
if (croppedWidth > 0 && croppedHeight > 0) {
int height2 = croppedHeight;
copyRect(surface, left, top, croppedWidth, croppedHeight, destSurface, destX, destY);
addDirtyRect(left, top, left + croppedWidth, top + height2);
}
}
void GraphicsManager::copyRect(const byte *srcSurface, int x1, int y1, uint16 width, int height, byte *destSurface, int destX, int destY) {
const byte *srcP = x1 + _lineNbr2 * y1 + srcSurface;
byte *destP = destX + _lineNbr2 * destY + destSurface;
int yp = height;
int yCurrent;
do {
yCurrent = yp;
memcpy(destP, srcP, 4 * (width >> 2));
const byte *src2P = (srcP + 4 * (width >> 2));
byte *dest2P = (destP + 4 * (width >> 2));
int pitch = width - 4 * (width >> 2);
memcpy(dest2P, src2P, pitch);
destP = (dest2P + pitch + _lineNbr2 - width);
srcP = (src2P + pitch + _lineNbr2 - width);
yp = yCurrent - 1;
} while (yCurrent != 1);
}
// Display Font
void GraphicsManager::displayFont(byte *surface, const byte *spriteData, int xp, int yp, int characterIndex, int color) {
const byte *spriteDataP = spriteData + 3;
for (int i = characterIndex; i; --i)
spriteDataP += READ_LE_UINT32(spriteDataP) + 16;
int spriteWidth = 0;
int spriteHeight = 0;
const byte *spriteSizeP = spriteDataP + 4;
spriteWidth = READ_LE_INT16(spriteSizeP);
spriteSizeP += 2;
spriteHeight = READ_LE_INT16(spriteSizeP);
const byte *spritePixelsP = spriteSizeP + 10;
byte *destP = surface + xp + _lineNbr2 * yp;
_width = spriteWidth;
int yCtr;
do {
yCtr = spriteHeight;
byte *destLineP = destP;
for (int xCtr = spriteWidth; xCtr; xCtr--) {
byte destByte = *spritePixelsP;
if (*spritePixelsP) {
if (destByte == 252)
destByte = color;
*destP = destByte;
}
++destP;
++spritePixelsP;
}
destP = _lineNbr2 + destLineP;
spriteHeight = yCtr - 1;
} while (yCtr != 1);
}
void GraphicsManager::initScreen(const Common::String &file, int mode, bool initializeScreen) {
Common::String filename = file + ".ini";
bool fileFoundFl = false;
byte *ptr = _vm->_fileIO->searchCat(filename, RES_INI, fileFoundFl);
if (!fileFoundFl) {
ptr = _vm->_fileIO->loadFile(filename);
}
if (!mode) {
filename = file + ".spr";
_vm->_globals->_levelSpriteBuf = _vm->_globals->freeMemory(_vm->_globals->_levelSpriteBuf);
if (initializeScreen) {
fileFoundFl = false;
_vm->_globals->_levelSpriteBuf = _vm->_fileIO->searchCat(filename, RES_SLI, fileFoundFl);
if (!fileFoundFl) {
_vm->_globals->_levelSpriteBuf = _vm->_fileIO->loadFile(filename);
} else {
_vm->_globals->_levelSpriteBuf = _vm->_fileIO->loadFile("RES_SLI.RES");
}
}
}
if (READ_BE_UINT24(ptr) != MKTAG24('I', 'N', 'I')) {
error("Invalid INI File %s", file.c_str());
} else {
bool doneFlag = false;
int dataOffset = 1;
do {
int dataVal1 = _vm->_script->handleOpcode(ptr + 20 * dataOffset);
if (dataVal1 == -1 || _vm->shouldQuit())
return;
if (dataVal1 == 2)
dataOffset = _vm->_script->handleGoto((ptr + 20 * dataOffset));
if (dataVal1 == 3)
dataOffset = _vm->_script->handleIf(ptr, dataOffset);
if (dataOffset == -1)
error("Error, defective IFF");
if (dataVal1 == 1 || dataVal1 == 4)
++dataOffset;
if (!dataVal1 || dataVal1 == 5)
doneFlag = true;
} while (!doneFlag);
}
_vm->_globals->freeMemory(ptr);
_vm->_globals->_answerBuffer = _vm->_globals->freeMemory(_vm->_globals->_answerBuffer);
filename = file + ".rep";
fileFoundFl = false;
byte *dataP = _vm->_fileIO->searchCat(filename, RES_REP, fileFoundFl);
if (!fileFoundFl)
dataP = _vm->_fileIO->loadFile(filename);
_vm->_globals->_answerBuffer = dataP;
_vm->_objectsMan->_forceZoneFl = true;
_vm->_objectsMan->_changeVerbFl = false;
}
void GraphicsManager::displayScreen(bool initPalette) {
if (initPalette)
initColorTable(50, 65, _palette);
if (_lineNbr == SCREEN_WIDTH)
fillSurface(_frontBuffer, _colorTable, SCREEN_WIDTH * SCREEN_HEIGHT);
else if (_lineNbr == (SCREEN_WIDTH * 2))
fillSurface(_frontBuffer, _colorTable, SCREEN_WIDTH * SCREEN_HEIGHT * 2);
display8BitRect(_frontBuffer, _vm->_events->_startPos.x, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0);
memcpy(_backBuffer, _frontBuffer, 614399);
updateScreen();
}
void GraphicsManager::copyWinscanVbe(const byte *src, byte *dest) {
int destOffset = 0;
const byte *srcPtr = src;
for (;;) {
byte byteVal = *srcPtr;
if (byteVal == kByteStop)
return;
if (*srcPtr > kByteStop) {
if (byteVal == k8bVal) {
destOffset += srcPtr[1];
byteVal = srcPtr[2];
srcPtr += 2;
} else if (byteVal == k16bVal) {
destOffset += READ_LE_UINT16(srcPtr + 1);
byteVal = srcPtr[3];
srcPtr += 3;
} else {
destOffset += READ_LE_UINT32(srcPtr + 1);
byteVal = srcPtr[5];
srcPtr += 5;
}
}
dest[destOffset] = byteVal;
++srcPtr;
++destOffset;
}
}
// Reduce Screen
void GraphicsManager::reduceScreenPart(const byte *srcSurface, byte *destSurface, int xp, int yp, int width, int height, int zoom) {
const byte *srcP = xp + _lineNbr2 * yp + srcSurface;
byte *destP = destSurface;
_zoomOutFactor = zoom;
_width = width;
_reduceX = 0;
_reducedY = 0;
if (zoom < 100) {
for (int yCtr = 0; yCtr < height; ++yCtr, srcP += _lineNbr2) {
_reducedY += _zoomOutFactor;
if (_reducedY < 100) {
_reduceX = 0;
const byte *lineSrcP = srcP;
for (int xCtr = 0; xCtr < _width; ++xCtr) {
_reduceX += _zoomOutFactor;
if (_reduceX < 100) {
*destP++ = *lineSrcP++;
} else {
_reduceX -= 100;
++lineSrcP;
}
}
} else {
_reducedY -= 100;
}
}
}
}
/**
* Draw horizontal line
*/
void GraphicsManager::drawHorizontalLine(byte *surface, int xp, int yp, uint16 width, byte col) {
memset(surface + xp + _lineNbr2 * yp, col, width);
}
/**
* Draw vertical line
*/
void GraphicsManager::drawVerticalLine(byte *surface, int xp, int yp, int height, byte col) {
byte *destP = surface + xp + _lineNbr2 * yp;
for (int yCtr = height; yCtr; yCtr--) {
*destP = col;
destP += _lineNbr2;
}
}
/**
* Backup the current screen
*/
void GraphicsManager::backupScreen() {
// Allocate a new data block for the screen, if necessary
if (_vm->_graphicsMan->_backupScreen == nullptr)
_vm->_graphicsMan->_backupScreen = _vm->_globals->allocMemory(SCREEN_WIDTH * 2 * SCREEN_HEIGHT);
// Backup the screen
Common::copy(_vm->_graphicsMan->_backBuffer, _vm->_graphicsMan->_backBuffer +
SCREEN_WIDTH * 2 * SCREEN_HEIGHT, _vm->_graphicsMan->_backupScreen);
}
/**
* Restore a previously backed up screen
*/
void GraphicsManager::restoreScreen() {
assert(_vm->_graphicsMan->_backupScreen);
// Restore the screen and free the buffer
Common::copy(_vm->_graphicsMan->_backupScreen, _vm->_graphicsMan->_backupScreen +
SCREEN_WIDTH * 2 * SCREEN_HEIGHT, _vm->_graphicsMan->_backBuffer);
_vm->_globals->freeMemory(_vm->_graphicsMan->_backupScreen);
_backupScreen = nullptr;
}
} // End of namespace Hopkins
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