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engines/lure/screen.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 "lure/screen.h"
+#include "lure/luredefs.h"
+#include "lure/memory.h"
+#include "lure/disk.h"
+#include "lure/decode.h"
+#include "lure/events.h"
+
+#include "graphics/paletteman.h"
+
+namespace Lure {
+
+static Screen *int_disk = nullptr;
+
+Screen &Screen::getReference() {
+	return *int_disk;
+}
+
+Screen::Screen(OSystem &system): _system(system),
+		_screen(new Surface(FULL_SCREEN_WIDTH, FULL_SCREEN_HEIGHT)),
+		_disk(Disk::getReference()),
+		_palette(new Palette(GAME_PALETTE_RESOURCE_ID, RGB64)) {
+	int_disk = this;
+	_screen->empty();
+	_system.getPaletteManager()->setPalette(_palette->data(), 0, GAME_COLORS);
+}
+
+Screen::~Screen() {
+	delete _screen;
+	delete _palette;
+}
+
+void Screen::setSystemPalette(Palette *p, uint16 start, uint16 num) {
+	byte pal[3 * 256];
+	assert(start + num <= 256);
+
+	const byte *rawData = p->data();
+	for (uint i = 0; i < num; ++i) {
+		pal[i * 3 + 0] = rawData[(i + start) * 4 + 0];
+		pal[i * 3 + 1] = rawData[(i + start) * 4 + 1];
+		pal[i * 3 + 2] = rawData[(i + start) * 4 + 2];
+	}
+
+	_system.getPaletteManager()->setPalette(pal, start, num);
+}
+
+// setPaletteEmpty
+// Defaults the palette to an empty set
+
+void Screen::setPaletteEmpty(int numEntries) {
+	Palette emptyPalette(numEntries, nullptr, RGB64);
+	setSystemPalette(&emptyPalette, 0, numEntries);
+	_palette->copyFrom(&emptyPalette);
+/*
+	delete _palette;
+	_palette = new Palette();
+
+	_system.getPaletteManager()->setPalette(_palette->data(), 0, numEntries);
+*/
+	_system.updateScreen();
+}
+
+// setPalette
+// Sets the current palette to the passed palette
+
+void Screen::setPalette(Palette *p) {
+	_palette->copyFrom(p);
+	setSystemPalette(_palette, 0, GAME_COLORS);
+	_system.updateScreen();
+}
+
+// setPalette
+// Variation that allows the specification of a subset of a palette passed in to be copied
+
+void Screen::setPalette(Palette *p, uint16 start, uint16 num) {
+	_palette->palette()->copyFrom(p->palette(), start * 4, start * 4, num * 4);
+	setSystemPalette(_palette, start, num);
+	_system.updateScreen();
+}
+
+// paletteFadeIn
+// Fades in the palette. For proper operation, the palette should have been
+// previously set to empty
+
+void Screen::paletteFadeIn(Palette *p) {
+	assert(p->numEntries() <= _palette->numEntries());
+	Events &events = Events::getReference();
+	bool changed;
+
+	do {
+		changed = false;
+		byte *pFinal = p->data();
+		byte *pCurrent = _palette->data();
+
+		for (int palCtr = 0; palCtr < p->numEntries() * PALETTE_FADE_INC_SIZE; ++palCtr, ++pCurrent, ++pFinal) {
+			if (palCtr % PALETTE_FADE_INC_SIZE == (PALETTE_FADE_INC_SIZE - 1)) continue;
+			bool isDifferent = *pCurrent < *pFinal;
+
+			if (isDifferent) {
+				if ((*pFinal - *pCurrent) < PALETTE_FADE_INC_SIZE)
+					*pCurrent = *pFinal;
+				else
+					*pCurrent += PALETTE_FADE_INC_SIZE;
+				changed = true;
+			}
+		}
+
+		if (changed) {
+			setSystemPalette(_palette, 0, p->numEntries());
+			_system.updateScreen();
+			_system.delayMillis(20);
+			while (events.pollEvent())
+				;
+		}
+	} while (changed);
+}
+
+// paletteFadeOut
+// Fades the screen to black by gradually decreasing the palette colors
+
+void Screen::paletteFadeOut(int numEntries) {
+	assert((uint32)numEntries <= _palette->palette()->size());
+	Events &events = Events::getReference();
+	bool changed;
+
+	do {
+		byte *pTemp = _palette->data();
+		changed = false;
+
+		for (uint32 palCtr = 0; palCtr < (uint32)(numEntries * PALETTE_FADE_INC_SIZE); ++palCtr, ++pTemp) {
+			if (palCtr % PALETTE_FADE_INC_SIZE == (PALETTE_FADE_INC_SIZE - 1))
+				continue;
+			bool isDifferent = *pTemp > 0;
+			if (isDifferent) {
+				if (*pTemp < PALETTE_FADE_INC_SIZE) *pTemp = 0;
+				else *pTemp -= PALETTE_FADE_INC_SIZE;
+				changed = true;
+			}
+		}
+
+		if (changed) {
+			setSystemPalette(_palette, 0, numEntries);
+			_system.updateScreen();
+			_system.delayMillis(20);
+			while (events.pollEvent())
+				;
+		}
+	} while (changed);
+}
+
+void Screen::resetPalette() {
+	Palette p(GAME_PALETTE_RESOURCE_ID);
+	setPalette(&p);
+}
+
+void Screen::empty() {
+	_screen->empty();
+	update();
+}
+
+void Screen::update() {
+	_system.copyRectToScreen(screen_raw(), FULL_SCREEN_WIDTH, 0, 0, FULL_SCREEN_WIDTH, FULL_SCREEN_HEIGHT);
+	_system.updateScreen();
+}
+
+void Screen::updateArea(uint16 x, uint16 y, uint16 w, uint16 h) {
+	_system.copyRectToScreen(screen_raw(), FULL_SCREEN_WIDTH, x, y, w, h);
+	_system.updateScreen();
+}
+
+} // End of namespace Lure