Initial commit

engines/drascula/palette.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 "graphics/paletteman.h"
+
+#include "drascula/drascula.h"
+
+namespace Drascula {
+
+static const char colorTable[][3] = {
+	{    0,    0,    0 }, { 0x10, 0x3E, 0x28 },
+	{    0,    0,    0 },	// unused
+	{ 0x16, 0x3F, 0x16 }, { 0x09, 0x3F, 0x12 },
+	{ 0x3F, 0x3F, 0x15 },
+	{    0,    0,    0 },	// unused
+	{ 0x38,    0,    0 }, { 0x3F, 0x27, 0x0B },
+	{ 0x2A,    0, 0x2A }, { 0x30, 0x30, 0x30 },
+	{   98,   91,  100 }
+};
+
+void DrasculaEngine::setRGB(byte *pal, int colorCount) {
+	int x, cnt = 0;
+
+	for (x = 0; x < colorCount; x++) {
+		gamePalette[x][0] = pal[cnt++] / 4;
+		gamePalette[x][1] = pal[cnt++] / 4;
+		gamePalette[x][2] = pal[cnt++] / 4;
+	}
+	setPalette((byte *)&gamePalette);
+}
+
+void DrasculaEngine::black() {
+	int color, component;
+	DacPalette256 blackPalette;
+
+	for (color = 0; color < 256; color++)
+		for (component = 0; component < 3; component++)
+			blackPalette[color][component] = 0;
+
+	blackPalette[254][0] = 0x3F;
+	blackPalette[254][1] = 0x3F;
+	blackPalette[254][2] = 0x15;
+
+	setPalette((byte *)&blackPalette);
+}
+
+void DrasculaEngine::setPalette(byte *PalBuf) {
+	byte pal[256 * 3];
+
+	for (int i = 0; i < 3 * 256; ++i) {
+		pal[i] = PalBuf[i] * 4;
+	}
+
+	_system->getPaletteManager()->setPalette(pal, 0, 256);
+	_system->updateScreen();
+}
+
+void DrasculaEngine::color_abc(int cl) {
+	_color = cl;
+
+	for (int i = 0; i <= 2; i++)
+		gamePalette[254][i] = colorTable[cl][i];
+
+	setPalette((byte *)&gamePalette);
+}
+
+signed char DrasculaEngine::adjustToVGA(signed char value) {
+	return (value & 0x3F) * (value > 0);
+}
+
+void DrasculaEngine::fadeToBlack(int fadeSpeed) {
+	signed char fade;
+	unsigned int color, component;
+
+	DacPalette256 palFade;
+
+	for (fade = 63; fade >= 0; fade--) {
+		for (color = 0; color < 256; color++) {
+			for (component = 0; component < 3; component++) {
+				palFade[color][component] = adjustToVGA(gamePalette[color][component] - 63 + fade);
+			}
+		}
+		pause(fadeSpeed);
+
+		setPalette((byte *)&palFade);
+
+		updateEvents();
+	}
+}
+
+void DrasculaEngine::fadeFromBlack(int fadeSpeed) {
+	signed char fade;
+	unsigned int color, component;
+
+	DacPalette256 palFade;
+
+	for (fade = 0; fade < 64; fade++) {
+		for (color = 0; color < 256; color++) {
+			for (component = 0; component < 3; component++) {
+				palFade[color][component] = adjustToVGA(gamePalette[color][component] - 63 + fade);
+			}
+		}
+		pause(fadeSpeed);
+
+		setPalette((byte *)&palFade);
+
+		updateEvents();
+	}
+}
+
+void DrasculaEngine::assignPalette(DacPalette256 pal) {
+	int color, component;
+
+	for (color = 235; color < 253; color++)
+		for (component = 0; component < 3; component++)
+			pal[color][component] = gamePalette[color][component];
+}
+
+void DrasculaEngine::setDefaultPalette(DacPalette256 pal) {
+	int color, component;
+
+	for (color = 235; color < 253; color++) {
+		for (component = 0; component < 3; component++) {
+			gamePalette[color][component] = pal[color][component];
+		}
+	}
+	setPalette((byte *)&gamePalette);
+}
+
+void DrasculaEngine::setPaletteBase(int darkness) {
+	signed char fade;
+	unsigned int color, component;
+
+	for (fade = darkness; fade >= 0; fade--) {
+		for (color = 235; color < 253; color++) {
+			for (component = 0; component < 3; component++)
+				gamePalette[color][component] = adjustToVGA(gamePalette[color][component] - 8 + fade);
+		}
+	}
+
+	setPalette((byte *)&gamePalette);
+}
+
+} // End of namespace Drascula