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Diffstat (limited to 'engines/sherlock/screen.cpp')
-rw-r--r-- | engines/sherlock/screen.cpp | 429 |
1 files changed, 429 insertions, 0 deletions
diff --git a/engines/sherlock/screen.cpp b/engines/sherlock/screen.cpp new file mode 100644 index 0000000000..e70d0614d1 --- /dev/null +++ b/engines/sherlock/screen.cpp @@ -0,0 +1,429 @@ +/* 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 "sherlock/screen.h" +#include "sherlock/sherlock.h" +#include "common/system.h" +#include "common/util.h" +#include "graphics/palette.h" + +namespace Sherlock { + +Screen::Screen(SherlockEngine *vm) : Surface(SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT), _vm(vm), + _backBuffer1(SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT), + _backBuffer2(SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT), + _backBuffer(&_backBuffer1) { + _transitionSeed = 1; + _fadeStyle = false; + _font = nullptr; + _fontHeight = 0; + Common::fill(&_cMap[0], &_cMap[PALETTE_SIZE], 0); + Common::fill(&_sMap[0], &_sMap[PALETTE_SIZE], 0); + setFont(1); +} + +Screen::~Screen() { + delete _font; +} + +void Screen::setFont(int fontNumb) { + // Interactive demo doesn't use fonts + if (!_vm->_interactiveFl) + return; + + _fontNumber = fontNumb; + Common::String fname = Common::String::format("FONT%d.VGS", fontNumb + 1); + + // Discard any previous font and read in new one + delete _font; + _font = new ImageFile(fname); + + // Iterate through the frames to find the tallest font character + _fontHeight = 0; + for (uint idx = 0; idx < _font->size(); ++idx) + _fontHeight = MAX((uint16)_fontHeight, (*_font)[idx]._frame.h); +} + +void Screen::update() { + // Merge the dirty rects + mergeDirtyRects(); + + // Loop through copying dirty areas to the physical screen + Common::List<Common::Rect>::iterator i; + for (i = _dirtyRects.begin(); i != _dirtyRects.end(); ++i) { + const Common::Rect &r = *i; + const byte *srcP = (const byte *)getBasePtr(r.left, r.top); + g_system->copyRectToScreen(srcP, _surface.pitch, r.left, r.top, + r.width(), r.height()); + } + + // Signal the physical screen to update + g_system->updateScreen(); + _dirtyRects.clear(); +} + +void Screen::getPalette(byte palette[PALETTE_SIZE]) { + g_system->getPaletteManager()->grabPalette(palette, 0, PALETTE_COUNT); +} + +void Screen::setPalette(const byte palette[PALETTE_SIZE]) { + g_system->getPaletteManager()->setPalette(palette, 0, PALETTE_COUNT); +} + +int Screen::equalizePalette(const byte palette[PALETTE_SIZE]) { + int total = 0; + byte tempPalette[PALETTE_SIZE]; + getPalette(tempPalette); + + // For any palette component that doesn't already match the given destination + // palette, change by 1 towards the reference palette component + for (int idx = 0; idx < PALETTE_SIZE; ++idx) { + if (tempPalette[idx] > palette[idx]) { + tempPalette[idx] = MAX((int)palette[idx], (int)tempPalette[idx] - 4); + ++total; + } else if (tempPalette[idx] < palette[idx]) { + tempPalette[idx] = MIN((int)palette[idx], (int)tempPalette[idx] + 4); + ++total; + } + } + + if (total > 0) + // Palette changed, so reload it + setPalette(tempPalette); + + return total; +} + +void Screen::fadeToBlack(int speed) { + byte tempPalette[PALETTE_SIZE]; + Common::fill(&tempPalette[0], &tempPalette[PALETTE_SIZE], 0); + + while (equalizePalette(tempPalette)) { + _vm->_events->delay(15 * speed); + } + + setPalette(tempPalette); + fillRect(Common::Rect(0, 0, _surface.w, _surface.h), 0); +} + +void Screen::fadeIn(const byte palette[PALETTE_SIZE], int speed) { + int count = 50; + while (equalizePalette(palette) && --count) { + _vm->_events->delay(15 * speed); + } + + setPalette(palette); +} + +void Screen::addDirtyRect(const Common::Rect &r) { + _dirtyRects.push_back(r); + assert(r.width() > 0 && r.height() > 0); +} + +void Screen::mergeDirtyRects() { + Common::List<Common::Rect>::iterator rOuter, rInner; + + // Process the dirty rect list to find any rects to merge + for (rOuter = _dirtyRects.begin(); rOuter != _dirtyRects.end(); ++rOuter) { + rInner = rOuter; + while (++rInner != _dirtyRects.end()) { + + if ((*rOuter).intersects(*rInner)) { + // these two rectangles overlap or + // are next to each other - merge them + + unionRectangle(*rOuter, *rOuter, *rInner); + + // remove the inner rect from the list + _dirtyRects.erase(rInner); + + // move back to beginning of list + rInner = rOuter; + } + } + } +} + +bool Screen::unionRectangle(Common::Rect &destRect, const Common::Rect &src1, const Common::Rect &src2) { + destRect = src1; + destRect.extend(src2); + + return !destRect.isEmpty(); +} + +void Screen::randomTransition() { + Events &events = *_vm->_events; + const int TRANSITION_MULTIPLIER = 0x15a4e35; + _dirtyRects.clear(); + + for (int idx = 0; idx <= 65535 && !_vm->shouldQuit(); ++idx) { + _transitionSeed = _transitionSeed * TRANSITION_MULTIPLIER + 1; + int offset = _transitionSeed & 0xFFFF; + + if (offset < (SHERLOCK_SCREEN_WIDTH * SHERLOCK_SCREEN_HEIGHT)) + *((byte *)getPixels() + offset) = *((const byte *)_backBuffer->getPixels() + offset); + + if (idx != 0 && (idx % 300) == 0) { + // Ensure there's a full screen dirty rect for the next frame update + if (_dirtyRects.empty()) + addDirtyRect(Common::Rect(0, 0, _surface.w, _surface.h)); + + events.pollEvents(); + events.delay(1); + } + } + + // Make sure everything has been transferred + blitFrom(*_backBuffer); +} + +void Screen::verticalTransition() { + Events &events = *_vm->_events; + + byte table[SHERLOCK_SCREEN_WIDTH]; + Common::fill(&table[0], &table[SHERLOCK_SCREEN_WIDTH], 0); + + for (int yp = 0; yp < SHERLOCK_SCREEN_HEIGHT; ++yp) { + for (int xp = 0; xp < SHERLOCK_SCREEN_WIDTH; ++xp) { + int temp = (table[xp] >= 197) ? SHERLOCK_SCREEN_HEIGHT - table[xp] : + _vm->getRandomNumber(3) + 1; + + if (temp) { + blitFrom(_backBuffer1, Common::Point(xp, table[xp]), + Common::Rect(xp, table[xp], xp + 1, table[xp] + temp)); + table[xp] += temp; + } + } + + events.delay(10); + } +} + +void Screen::restoreBackground(const Common::Rect &r) { + if (r.width() > 0 && r.height() > 0) { + Common::Rect tempRect = r; + tempRect.clip(Common::Rect(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCENE_HEIGHT)); + + if (tempRect.isValidRect()) + _backBuffer1.blitFrom(_backBuffer2, Common::Point(tempRect.left, tempRect.top), tempRect); + } +} + +void Screen::slamArea(int16 xp, int16 yp, int16 width, int16 height) { + slamRect(Common::Rect(xp, yp, xp + width, yp + height)); +} + +void Screen::slamRect(const Common::Rect &r) { + if (r.width() && r.height() > 0) { + Common::Rect tempRect = r; + tempRect.clip(Common::Rect(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT)); + + if (tempRect.isValidRect()) + blitFrom(*_backBuffer, Common::Point(tempRect.left, tempRect.top), tempRect); + } +} + +void Screen::flushImage(ImageFrame *frame, const Common::Point &pt, + int16 *xp, int16 *yp, int16 *width, int16 *height) { + Common::Point imgPos = pt + frame->_offset; + Common::Rect newBounds(imgPos.x, imgPos.y, imgPos.x + frame->_frame.w, imgPos.y + frame->_frame.h); + Common::Rect oldBounds(*xp, *yp, *xp + *width, *yp + *height); + + // See if the areas of the old and new overlap, and if so combine the areas + if (newBounds.intersects(oldBounds)) { + Common::Rect mergedBounds = newBounds; + mergedBounds.extend(oldBounds); + mergedBounds.right += 1; + mergedBounds.bottom += 1; + + slamRect(mergedBounds); + } else { + // The two areas are independent, so copy them both + slamRect(newBounds); + slamRect(oldBounds); + } + + *xp = newBounds.left; + *yp = newBounds.top; + *width = newBounds.width(); + *height = newBounds.height(); +} + +void Screen::print(const Common::Point &pt, byte color, const char *formatStr, ...) { + // Create the string to display + va_list args; + va_start(args, formatStr); + Common::String str = Common::String::vformat(formatStr, args); + va_end(args); + + // Figure out area to draw text in + Common::Point pos = pt; + int width = stringWidth(str); + pos.y--; // Font is always drawing one line higher + if (!pos.x) + // Center text horizontally + pos.x = (SHERLOCK_SCREEN_WIDTH - width) / 2; + + Common::Rect textBounds(pos.x, pos.y, pos.x + width, pos.y + _fontHeight); + if (textBounds.right > SHERLOCK_SCREEN_WIDTH) + textBounds.moveTo(SHERLOCK_SCREEN_WIDTH - width, textBounds.top); + if (textBounds.bottom > SHERLOCK_SCREEN_HEIGHT) + textBounds.moveTo(textBounds.left, SHERLOCK_SCREEN_HEIGHT - _fontHeight); + + // Write out the string at the given position + writeString(str, Common::Point(textBounds.left, textBounds.top), color); + + // Copy the affected area to the screen + slamRect(textBounds); +} + +void Screen::gPrint(const Common::Point &pt, byte color, const char *formatStr, ...) { + // Create the string to display + va_list args; + va_start(args, formatStr); + Common::String str = Common::String::vformat(formatStr, args); + va_end(args); + + // Print the text + writeString(str, pt, color); +} + +int Screen::stringWidth(const Common::String &str) { + int width = 0; + + for (const char *c = str.c_str(); *c; ++c) + width += charWidth(*c); + + return width; +} + +int Screen::charWidth(char c) { + if (c == ' ') + return 5; + else if (Common::isPrint(c)) + return (*_font)[c - 33]._frame.w + 1; + else + return 0; +} + +void Screen::writeString(const Common::String &str, const Common::Point &pt, byte color) { + Common::Point charPos = pt; + + for (const char *c = str.c_str(); *c; ++c) { + if (*c == ' ') + charPos.x += 5; + else { + assert(Common::isPrint(*c)); + ImageFrame &frame = (*_font)[*c - 33]; + _backBuffer->transBlitFrom(frame, charPos, false, color); + charPos.x += frame._frame.w + 1; + } + } +} + +void Screen::vgaBar(const Common::Rect &r, int color) { + _backBuffer->fillRect(r, color); + slamRect(r); +} + +void Screen::makeButton(const Common::Rect &bounds, int textX, + const Common::String &str) { + + Surface &bb = *_backBuffer; + bb.fillRect(Common::Rect(bounds.left, bounds.top, bounds.right, bounds.top + 1), BUTTON_TOP); + bb.fillRect(Common::Rect(bounds.left, bounds.top, bounds.left + 1, bounds.bottom), BUTTON_TOP); + bb.fillRect(Common::Rect(bounds.right - 1, bounds.top, bounds.right, bounds.bottom), BUTTON_BOTTOM); + bb.fillRect(Common::Rect(bounds.left + 1, bounds.bottom - 1, bounds.right, bounds.bottom), BUTTON_BOTTOM); + bb.fillRect(Common::Rect(bounds.left + 1, bounds.top + 1, bounds.right - 1, bounds.bottom - 1), BUTTON_MIDDLE); + + gPrint(Common::Point(textX, bounds.top), COMMAND_HIGHLIGHTED, "%c", str[0]); + gPrint(Common::Point(textX + charWidth(str[0]), bounds.top), + COMMAND_FOREGROUND, "%s", str.c_str() + 1); +} + +void Screen::buttonPrint(const Common::Point &pt, byte color, bool slamIt, + const Common::String &str) { + int xStart = pt.x - stringWidth(str) / 2; + + if (color == COMMAND_FOREGROUND) { + // First character needs to be highlighted + if (slamIt) { + print(Common::Point(xStart, pt.y + 1), COMMAND_HIGHLIGHTED, "%c", str[0]); + print(Common::Point(xStart + charWidth(str[0]), pt.y + 1), + COMMAND_FOREGROUND, "%s", str.c_str() + 1); + } else { + gPrint(Common::Point(xStart, pt.y), COMMAND_HIGHLIGHTED, "%c", str[0]); + gPrint(Common::Point(xStart + charWidth(str[0]), pt.y), + COMMAND_FOREGROUND, "%s", str.c_str() + 1); + } + } else if (slamIt) { + print(Common::Point(xStart, pt.y + 1), color, "%s", str.c_str()); + } else { + gPrint(Common::Point(xStart, pt.y), color, "%s", str.c_str()); + } +} + +void Screen::makePanel(const Common::Rect &r) { + _backBuffer->fillRect(r, BUTTON_MIDDLE); + _backBuffer->hLine(r.left, r.top, r.right - 2, BUTTON_TOP); + _backBuffer->hLine(r.left + 1, r.top + 1, r.right - 3, BUTTON_TOP); + _backBuffer->vLine(r.left, r.top, r.bottom - 1, BUTTON_TOP); + _backBuffer->vLine(r.left + 1, r.top + 1, r.bottom - 2, BUTTON_TOP); + + _backBuffer->vLine(r.right - 1, r.top, r.bottom - 1, BUTTON_BOTTOM); + _backBuffer->vLine(r.right - 2, r.top + 1, r.bottom - 2, BUTTON_BOTTOM); + _backBuffer->hLine(r.left, r.bottom - 1, r.right - 1, BUTTON_BOTTOM); + _backBuffer->hLine(r.left + 1, r.bottom - 2, r.right - 1, BUTTON_BOTTOM); +} + +void Screen::makeField(const Common::Rect &r) { + _backBuffer->fillRect(r, BUTTON_MIDDLE); + _backBuffer->hLine(r.left, r.top, r.right - 1, BUTTON_BOTTOM); + _backBuffer->hLine(r.left + 1, r.bottom - 1, r.right - 1, BUTTON_TOP); + _backBuffer->vLine(r.left, r.top + 1, r.bottom - 1, BUTTON_BOTTOM); + _backBuffer->vLine(r.right - 1, r.top + 1, r.bottom - 2, BUTTON_TOP); +} + +void Screen::setDisplayBounds(const Common::Rect &r) { + assert(r.left == 0 && r.top == 0); + _sceneSurface.setPixels(_backBuffer1.getPixels(), r.width(), r.height()); + + _backBuffer = &_sceneSurface; +} + +void Screen::resetDisplayBounds() { + _backBuffer = &_backBuffer1; +} + +Common::Rect Screen::getDisplayBounds() { + return (_backBuffer == &_sceneSurface) ? Common::Rect(0, 0, _sceneSurface.w(), _sceneSurface.h()) : + Common::Rect(0, 0, SHERLOCK_SCREEN_WIDTH, SHERLOCK_SCREEN_HEIGHT); +} + +void Screen::synchronize(Common::Serializer &s) { + int fontNumb = _fontNumber; + s.syncAsByte(fontNumb); + if (s.isLoading()) + setFont(fontNumb); +} + +} // End of namespace Sherlock |