SHERLOCK: Split Screen class into it's own file

1 files changed, 107 insertions, 0 deletions

diff --git a/engines/sherlock/screen.cpp b/engines/sherlock/screen.cpp
new file mode 100644
index 0000000000..d3fe68e367
--- /dev/null
+++ b/engines/sherlock/screen.cpp
@@ -0,0 +1,107 @@
+/* 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 "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) {
+	setFont(1);
+}
+
+void Screen::setFont(int fontNumber) {
+	_fontNumber = fontNumber;
+	Common::String fname = Common::String::format("FONT%d.VGS", fontNumber);
+	Common::SeekableReadStream *stream = _vm->_res->load(fname);
+
+	debug("TODO: Loading font %s, size - %d", fname.c_str(), stream->size());
+
+	delete stream;
+}
+
+void Screen::update() {
+	g_system->copyRectToScreen(getPixels(), this->w, 0, 0, this->w, this->h);
+	g_system->updateScreen();
+}
+
+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];
+			++total;
+		} else if (tempPalette[idx] < palette[idx]) {
+			++tempPalette[idx];
+			++total;
+		}
+	}
+
+	if (total > 0)
+		// Palette changed, so reload it
+		setPalette(tempPalette);
+
+	return total;
+}
+
+void Screen::fadeToBlack() {
+	const int FADE_AMOUNT = 2;
+	bool repeatFlag;
+	byte *srcP;
+	int count;
+	byte tempPalette[PALETTE_SIZE];
+
+	getPalette(tempPalette);
+	do {
+		repeatFlag = false;
+		for (srcP = &tempPalette[0], count = 0; count < PALETTE_SIZE; ++count, ++srcP) {
+			int v = *srcP;
+			if (v) {
+				repeatFlag = true;
+				*srcP = MAX(*srcP - FADE_AMOUNT, 0);
+			}
+		}
+
+		setPalette(tempPalette);
+		_vm->_events->pollEventsAndWait();
+	} while (repeatFlag && !_vm->shouldQuit());
+}
+
+} // End of namespace Sherlock