Initial commit

engines/prince/cursor.cpp

@@ -0,0 +1,153 @@
+/* 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 "graphics/cursorman.h"
+
+#include "prince/prince.h"
+#include "prince/cursor.h"
+#include "prince/debugger.h"
+#include "prince/script.h"
+
+#include "common/debug.h"
+
+namespace Prince {
+
+Cursor::Cursor() : _surface(nullptr) {
+}
+
+Cursor::~Cursor() {
+	if (_surface != nullptr) {
+		_surface->free();
+		delete _surface;
+		_surface = nullptr;
+	}
+}
+
+bool Cursor::loadStream(Common::SeekableReadStream &stream) {
+	stream.skip(4);
+	uint16 width = stream.readUint16LE();
+	uint16 height = stream.readUint16LE();
+
+	_surface = new Graphics::Surface();
+	_surface->create(width, height, Graphics::PixelFormat::createFormatCLUT8());
+
+	for (int h = 0; h < height; h++) {
+		stream.read(_surface->getBasePtr(0, h), width);
+	}
+	return true;
+}
+
+void PrinceEngine::changeCursor(uint16 curId) {
+	_debugger->_cursorNr = curId;
+	_mouseFlag = curId;
+	_flags->setFlagValue(Flags::MOUSEENABLED, curId);
+
+	const Graphics::Surface *curSurface = nullptr;
+
+	switch (curId) {
+	default:
+		error("Unknown cursor Id: %d", curId);
+	case 0:
+		CursorMan.showMouse(false);
+		_optionsFlag = 0;
+		_selectedMob = -1;
+		_previousMob = -1;
+		return;
+	case 1:
+		curSurface = _cursor1->getSurface();
+		break;
+	case 2:
+		curSurface = _cursor2;
+		break;
+	case 3:
+		curSurface = _cursor3->getSurface();
+		Common::Point mousePos = _system->getEventManager()->getMousePos();
+		mousePos.x = CLIP(mousePos.x, (int16) 315, (int16) 639);
+		mousePos.y = CLIP(mousePos.y, (int16) 0, (int16) 170);
+		_system->warpMouse(mousePos.x, mousePos.y);
+		break;
+	}
+
+	CursorMan.replaceCursorPalette(_roomBmp->getPalette().data(), 0, 255);
+	CursorMan.replaceCursor(
+		curSurface->getBasePtr(0, 0),
+		curSurface->w, curSurface->h,
+		0, 0,
+		255, false,
+		&curSurface->format
+	);
+	CursorMan.showMouse(true);
+}
+
+void PrinceEngine::makeInvCursor(int itemNr) {
+	const Graphics::Surface *cur1Surface = _cursor1->getSurface();
+	int cur1W = cur1Surface->w;
+	int cur1H = cur1Surface->h;
+	const Common::Rect cur1Rect(0, 0, cur1W, cur1H);
+
+	const Graphics::Surface *itemSurface = _allInvList[itemNr].getSurface();
+	int itemW = itemSurface->w;
+	int itemH = itemSurface->h;
+
+	int cur2W = cur1W + itemW / 2;
+	int cur2H = cur1H + itemH / 2;
+
+	if (_cursor2 != nullptr) {
+		_cursor2->free();
+		delete _cursor2;
+	}
+	_cursor2 = new Graphics::Surface();
+	_cursor2->create(cur2W, cur2H, Graphics::PixelFormat::createFormatCLUT8());
+	Common::Rect cur2Rect(0, 0, cur2W, cur2H);
+	_cursor2->fillRect(cur2Rect, 255);
+	_cursor2->copyRectToSurface(*cur1Surface, 0, 0, cur1Rect);
+
+	const byte *src1 = (const byte *)itemSurface->getBasePtr(0, 0);
+	byte *dst1 = (byte *)_cursor2->getBasePtr(cur1W, cur1H);
+
+	if (itemH % 2) {
+		itemH--;
+	}
+	if (itemW % 2) {
+		itemW--;
+	}
+
+	for (int y = 0; y < itemH; y++) {
+		const byte *src2 = src1;
+		byte *dst2 = dst1;
+		if (y % 2 == 0) {
+			for (int x = 0; x < itemW; x++, src2++) {
+				if (x % 2 == 0) {
+					if (*src2) {
+						*dst2 = *src2;
+					} else {
+						*dst2 = 255;
+					}
+					dst2++;
+				}
+			}
+			dst1 += _cursor2->pitch;
+		}
+		src1 += itemSurface->pitch;
+	}
+}
+
+} // End of namespace Prince