Initial commit

engines/kyra/graphics/screen_mr.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 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 "kyra/graphics/screen_mr.h"
+#include "kyra/engine/kyra_mr.h"
+
+namespace Kyra {
+
+Screen_MR::Screen_MR(KyraEngine_MR *vm, OSystem *system)
+	: Screen_v2(vm, system, _screenDimTable, _screenDimTableCount), _interfaceCommandLineY1(vm->gameFlags().extraLang != Common::UNK_LANG ? 185 : 188) {
+}
+
+Screen_MR::~Screen_MR() {
+}
+
+int Screen_MR::getLayer(int x, int y) {
+	if (x < 0)
+		x = 0;
+	else if (x >= 320)
+		x = 319;
+
+	if (y < 0) {
+		y = 0;
+	} else if (y >= 187) {
+		y = 187;
+		// The original actually limits the _maskMin/MaxY check to cases where y has already been clipped to 187.
+		// Whether this was intentional or not: Scenes actually require that we do it that way or animations may
+		// be drawn on the wrong layer (bug #11312).
+		if (y < _maskMinY || y > _maskMaxY)
+			return 15;
+	}
+
+	uint8 pixel = *(getCPagePtr(5) + y * 320 + x);
+	pixel &= 0x7F;
+	pixel >>= 3;
+
+	return CLIP<uint8>(pixel, 1, 15);
+}
+
+byte Screen_MR::getShapeFlag1(int x, int y) {
+	if (y < _maskMinY || y > _maskMaxY)
+		return 0;
+
+	uint8 color = _shapePages[0][y * SCREEN_W + x];
+	color &= 0x80;
+	color ^= 0x80;
+
+	if (color & 0x80)
+		return 1;
+	return 0;
+}
+
+byte Screen_MR::getShapeFlag2(int x, int y) {
+	if (y < _maskMinY || y > _maskMaxY)
+		return 0;
+
+	uint8 color = _shapePages[0][y * SCREEN_W + x];
+	color &= 0x7F;
+	color &= 0x87;
+	return color;
+}
+
+int Screen_MR::getDrawLayer(int x, int y) {
+	int xpos = x - 8;
+	int ypos = y;
+	int layer = 1;
+
+	for (int curX = xpos; curX < xpos + 24; ++curX) {
+		int tempLayer = getShapeFlag2(curX, ypos);
+
+		if (layer < tempLayer)
+			layer = tempLayer;
+
+		if (layer >= 7)
+			return 7;
+	}
+	return layer;
+}
+
+int Screen_MR::getDrawLayer2(int x, int y, int height) {
+	int xpos = x - 8;
+	int ypos = y;
+	int layer = 1;
+
+	for (int useX = xpos; useX < xpos + 24; ++useX) {
+		for (int useY = ypos - height; useY < ypos; ++useY) {
+			int tempLayer = getShapeFlag2(useX, useY);
+
+			if (tempLayer > layer)
+				layer = tempLayer;
+
+			if (tempLayer >= 7)
+				return 7;
+		}
+	}
+	return layer;
+}
+
+void Screen_MR::drawFilledBox(int x1, int y1, int x2, int y2, uint8 c1, uint8 c2, uint8 c3) {
+	fillRect(x1, y1, x2, y2, c1);
+
+	fillRect(x1, y1, x2, y1+1, c2);
+	fillRect(x2-1, y1, x2, y2, c2);
+
+	drawClippedLine(x1, y1, x1, y2, c3);
+	drawClippedLine(x1+1, y1+1, x1+1, y2-2, c3);
+	drawClippedLine(x1, y2, x2, y2, c3);
+	drawClippedLine(x1, y2-1, x2-1, y2-1, c3);
+}
+
+void ChineseOneByteFontMR::processColorMap() {
+	_textColor[0] = _colorMap[1] | (_colorMap[1] << 8);
+	if (_textColor[0]) {
+		_textColor[0] -= 0x100;
+		if (_colorMap[1] == 0xFF)
+			_textColor[0] -= 0x100;
+	}
+	_textColor[0] = TO_LE_16(_textColor[0]);
+	_textColor[1] = _colorMap[0] | (_colorMap[0] << 8);
+}
+
+uint32 ChineseTwoByteFontMR::getFontOffset(uint16 c) const {
+	c = ((c & 0x7F00) >> 2) | (c & 0x3F);
+	return c * 28;
+}
+
+void ChineseTwoByteFontMR::processColorMap() {
+	_textColor[0] = _colorMap[1] | (_colorMap[1] << 8);
+	if (_textColor[0]) {
+		_textColor[0] -= 0x100;
+		if (_colorMap[1] == 0xFF)
+			_textColor[0] -= 0x100;
+	}
+	_textColor[0] = TO_LE_16(_textColor[0]);
+	_textColor[1] = _colorMap[0] | (_colorMap[0] << 8);
+}
+
+} // End of namespace Kyra