Initial commit

engines/saga2/display.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/>.
+ *
+ *
+ * Based on the original sources
+ *   Faery Tale II -- The Halls of the Dead
+ *   (c) 1993-1996 The Wyrmkeep Entertainment Co.
+ */
+
+#include "common/config-manager.h"
+
+#include "saga2/saga2.h"
+#include "saga2/display.h"
+#include "saga2/intrface.h"
+#include "saga2/loadmsg.h"
+#include "saga2/grabinfo.h"
+#include "saga2/vpal.h"
+
+namespace Saga2 {
+
+extern bool             delayReDraw;
+extern BackWindow       *mainWindow;            // main window...
+
+/* ===================================================================== *
+   Globals
+ * ===================================================================== */
+
+bool                        paletteMayHaveChanged = false;
+
+
+/* ===================================================================== *
+   Locals
+ * ===================================================================== */
+
+static uint32 displayStatus = kDisGraphicsInit;
+static bool paletteSuspendFlag = false;
+
+
+/* ===================================================================== *
+   Prototypes
+ * ===================================================================== */
+
+void localCursorOn();
+void localCursorOff();
+void resetInputDevices();
+APPFUNC(cmdWindowFunc);                      // main window event handler
+static void switchOn();
+static void switchOff();
+
+// ------------------------------------------------------------------------
+// end game (normally)
+
+void endGame() {
+	blackOut();
+	displayDisable(kDisGameEnded);
+	g_vm->_gameRunning = false;
+}
+
+
+/* ===================================================================== *
+   Display initialization
+ * ===================================================================== */
+void dayNightUpdate();
+void fadeUp();
+void displayUpdate();
+void drawMainDisplay();
+
+void niceScreenStartup() {
+	if (ConfMan.hasKey("save_slot")) {
+		cleanupGameState();
+		loadSavedGameState(ConfMan.getInt("save_slot"));
+
+		if (GameMode::_newmodeFlag)
+			GameMode::update();
+		updateActiveRegions();
+	}
+
+	blackOut();
+	disablePaletteChanges();
+	mainEnable();
+	closeLoadMode();
+	g_vm->_pointer->move(Point16(320, 240));
+	//g_vm->_pointer->hide();
+	enablePaletteChanges();
+	displayUpdate();
+	dayNightUpdate();
+	fadeUp();
+	g_vm->_pointer->manditoryShow();                        //  hide mouse pointer
+	reDrawScreen();
+	//g_vm->_pointer->show();
+	updateAllUserControls();
+	reDrawScreen();
+	g_vm->_mouseInfo->replaceObject();
+	g_vm->_mouseInfo->clearGauge();
+	g_vm->_mouseInfo->setText(nullptr);
+	g_vm->_mouseInfo->setIntent(GrabInfo::kIntWalkTo);
+	resetInputDevices();
+}
+
+// ------------------------------------------------------------------------
+// backbuffer startup
+
+void initBackPanel() {
+	if (mainWindow)
+		return;
+
+	mainWindow = new BackWindow(
+	                 Rect16(0, 0, kScreenWidth, kScreenHeight),
+	                 0,
+	                 cmdWindowFunc);
+	if (mainWindow == nullptr)
+		error("Error initializing the back panel");
+}
+
+/* ===================================================================== *
+   Display disable flags
+ * ===================================================================== */
+
+// ------------------------------------------------------------------------
+// enable / disable blitting
+
+void displayEnable(DisplayDisabledBecause reason, bool onOff) {
+	bool prev = displayEnabled();
+	if (!onOff)
+		displayStatus |= reason;
+	else
+		displayStatus &= (~reason);
+	if (prev != displayEnabled()) {
+		if (displayEnabled())
+			switchOn();
+		else
+			switchOff();
+	}
+}
+
+// ------------------------------------------------------------------------
+// This is a check to see if blitting is enabled
+
+bool displayEnabled(uint32 mask) {
+	return true;
+}
+
+bool displayOkay() {
+	return displayEnabled();
+}
+
+
+// ------------------------------------------------------------------------
+// Main on/off swiotch for display
+
+void mainEnable() {
+	displayEnable(kDisGameNotInitialized);
+}
+
+// ------------------------------------------------------------------------
+// This is a check to see if blitting is enabled
+
+void mainDisable() {
+	displayDisable(kDisGameNotInitialized);
+}
+
+// ------------------------------------------------------------------------
+// On/Off hooks
+
+static void switchOn() {
+	enableUserControls();
+}
+
+static void switchOff() {
+	disableUserControls();
+}
+
+/* ===================================================================== *
+   Palette disable hooks
+ * ===================================================================== */
+
+void enablePaletteChanges() {
+	paletteSuspendFlag = false;
+	paletteMayHaveChanged = true;
+}
+
+void disablePaletteChanges() {
+	paletteSuspendFlag = true;
+}
+
+bool paletteChangesEnabled() {
+	return !paletteSuspendFlag;
+}
+
+
+/* ===================================================================== *
+   Refresh
+ * ===================================================================== */
+
+// ------------------------------------------------------------------------
+// notice that screen may be dirty
+
+void delayedDisplayEnable() {
+	delayReDraw = false;
+}
+
+// ------------------------------------------------------------------------
+// notice that palette may be dirty
+
+void externalPaletteIntrusion() {
+	paletteMayHaveChanged = true;
+}
+
+// ------------------------------------------------------------------------
+// force a full screen redraw
+
+void reDrawScreen() {
+	//dispMM("refresh");
+	Rect16 r = Rect16(0, 0, 640, 480);
+	if (mainWindow && displayEnabled()) {
+		//updateAllUserControls();
+		drawMainDisplay();
+		mainWindow->invalidate(&r);
+		delayReDraw = false;
+		if (paletteMayHaveChanged) {
+			paletteMayHaveChanged = false;
+			g_vm->_pal->assertCurrentPalette();
+			paletteMayHaveChanged = false;
+		}
+	} else
+		delayReDraw = true;
+	//mainWindow->invalidate(r);
+}
+
+
+/* ===================================================================== *
+   Clear screen
+ * ===================================================================== */
+
+void blackOut() {
+	g_vm->_mainPort._drawMode = kDrawModeReplace;
+	g_vm->_mainPort.setColor(0);            //  fill screen with color
+	g_vm->_mainPort.fillRect(Rect16(0, 0, 640, 480));
+	g_vm->_pal->lightsOut();
+}
+
+
+/* ===================================================================== *
+   Loading screen
+ * ===================================================================== */
+
+// ------------------------------------------------------------------------
+// enable / disable blitting
+
+void showLoadMessage() {
+	uint32 saved = displayStatus;
+	displayStatus = 0;
+	loadingScreen();
+	displayStatus = saved;
+}
+
+
+/* ===================================================================== *
+   Video mode save and restore for videos
+ * ===================================================================== */
+
+void pushVidState() {
+}
+
+void popVidState() {
+}
+
+} // end of namespace Saga2