Initial commit

engines/glk/comprehend/charset.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 "glk/comprehend/charset.h"
+#include "common/file.h"
+#include "common/md5.h"
+#include "graphics/surface.h"
+
+namespace Glk {
+namespace Comprehend {
+
+void FixedFont::drawChar(Graphics::Surface *dst, uint32 chr, int x, int y, uint32 color) const {
+	assert(dst->format.bytesPerPixel == 4);
+	assert(chr >= 32 && chr < 128);
+
+	for (int yp = 0; yp < 8; ++yp) {
+		if ((y + yp) < 0 || (y + yp) >= dst->h)
+			continue;
+
+		uint32 *lineP = (uint32 *)dst->getBasePtr(x, y + yp);
+		byte bits = _data[chr - 32][yp];
+
+		for (int xp = x; xp < (x + 8); ++xp, ++lineP, bits >>= 1) {
+			if ((xp >= 0) && (xp < dst->w) && (bits & 1))
+				*lineP = color;
+		}
+	}
+}
+
+/*-------------------------------------------------------*/
+
+CharSet::CharSet() : FixedFont() {
+	Common::File f;
+	if (!f.open("charset.gda"))
+		error("Could not open char set");
+
+	uint version = f.readUint16LE();
+	if (version != 0x1100)
+		error("Unknown char set version");
+
+	f.seek(4);
+	for (int idx = 0; idx < 128 - 32; ++idx)
+		f.read(&_data[idx][0], 8);
+
+	f.close();
+}
+
+/*-------------------------------------------------------*/
+
+TalismanFont::TalismanFont() : FixedFont() {
+	// Extra strings are (annoyingly) stored in the game binary
+	Common::File f;
+	if (!f.open("novel.exe"))
+		error("novel.exe is a required file");
+
+	Common::String md5 = Common::computeStreamMD5AsString(f, 1024);
+
+	if (md5 == "0e7f002971acdb055f439020363512ce" || md5 == "2e18c88ce352ebea3e14177703a0485f") {
+		for (int idx = 0; idx < 128 - 32; ++idx)
+			f.read(&_data[idx][0], 8);
+	} else {
+		error("Unrecognised novel.exe encountered");
+	}
+
+	f.close();
+}
+
+} // namespace Comprehend
+} // namespace Glk