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engines/saga2/transit.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
+ * aint32 with this program; if not, write to the Free Software
+ *
+ *
+ * Based on the original sources
+ *   Faery Tale II -- The Halls of the Dead
+ *   (c) 1993-1996 The Wyrmkeep Entertainment Co.
+ */
+
+#include "saga2/saga2.h"
+#include "saga2/idtypes.h"
+#include "saga2/tile.h"
+#include "saga2/vpal.h"
+#include "saga2/palette.h"
+#include "saga2/calendar.h"
+#include "saga2/modal.h"
+#include "saga2/display.h"
+
+namespace Saga2 {
+
+/* ===================================================================== *
+   Prototypes
+ * ===================================================================== */
+
+bool isModalMode() {
+	uint16  i;
+	bool    modalFlag = false;
+
+	for (i = 0; i < GameMode::_modeStackCtr; i++) {
+		// go through each stacked mode
+		// and if modal mode is one of them,
+		// then set the modal flag
+		if (GameMode::_modeStackPtr[i] == &ModalMode) {
+			modalFlag = true;
+		}
+	}
+
+	return modalFlag;
+}
+
+void dayNightUpdate() {
+	// do nothing while in modal mode
+	if (isModalMode()) {
+		return;
+	}
+
+	audioEnvironmentSetDaytime(isDayTime());
+
+	uint32 lightLevel = g_vm->_calendar->lightLevel(MAX_LIGHT);
+
+	//  Code to avoid unnecessary fades.
+	if (lightLevel != g_vm->_pal->_prevLightLevel) {
+		g_vm->_pal->_prevLightLevel = lightLevel;
+
+		g_vm->_pal->createPalette(
+		    &g_vm->_pal->_newPalette,
+		    g_vm->_pal->_midnightPalette,
+		    g_vm->_pal->_noonPalette,
+		    lightLevel,
+		    MAX_LIGHT);
+
+		if (g_vm->_currentMapNum == 0)
+			g_vm->_pal->beginFade(&g_vm->_pal->_newPalette, 100);
+	}
+
+	if (!g_vm->_pal->updatePalette()) {
+		gPalettePtr     neededPalette;
+		gPalette        currentPalette;
+
+		neededPalette = g_vm->_currentMapNum == 0 ? &g_vm->_pal->_newPalette : g_vm->_pal->_noonPalette;
+		g_vm->_pal->getCurrentPalette(&currentPalette);
+		if (memcmp(&currentPalette, neededPalette, sizeof(gPalette)) != 0)
+			g_vm->_pal->setCurrentPalette(neededPalette);
+	}
+}
+
+void SystemEventLoop();
+//-----------------------------------------------------------------------
+//	Fade to black
+
+void clearTileAreaPort();
+void updateMainDisplay();
+void updateActiveRegions();
+void fadeUp();
+void fadeDown();
+void displayUpdate();
+void disableUserControls();
+void enableUserControls();
+
+void fadeDown() {
+	if (g_vm->_fadeDepth++ == 0) {
+		g_vm->_pal->beginFade(g_vm->_pal->_darkPalette, 20);
+		while (g_vm->_pal->updatePalette());
+		clearTileAreaPort();
+		blackOut();
+		disablePaletteChanges();
+	}
+}
+
+//-----------------------------------------------------------------------
+//	Fade to many colors
+
+void fadeUp() {
+	if (--g_vm->_fadeDepth == 0) {
+		enableUserControls();
+		updateMainDisplay();
+		drawMainDisplay();
+		reDrawScreen();
+		enablePaletteChanges();
+		g_vm->_pal->beginFade(g_vm->_currentMapNum != 0 ? g_vm->_pal->_noonPalette : &g_vm->_pal->_newPalette, 20);
+		while (g_vm->_pal->updatePalette()) ;
+	}
+}
+
+} // end of namespace Saga2