ACCESS: Main engine skeleton and events manager

engines/access/access.cpp

@@ -32,10 +32,12 @@ namespace Access {
 AccessEngine::AccessEngine(OSystem *syst, const AccessGameDescription *gameDesc) :
 		_gameDescription(gameDesc), Engine(syst), _randomSource("Access") {
 	_debugger = nullptr;
+	_events = nullptr;
 }
 
 AccessEngine::~AccessEngine() {
 	delete _debugger;
+	delete _events;
 }
 
 void AccessEngine::initialize() {
@@ -45,6 +47,7 @@ void AccessEngine::initialize() {
 	DebugMan.addDebugChannel(kDebugGraphics, "graphics", "Graphics handling");
 
 	_debugger = new Debugger(this);
+	_events = new EventsManager(this);
 }
 
 Common::Error AccessEngine::run() {

engines/access/access.h

@@ -31,6 +31,7 @@
 #include "engines/engine.h"
 #include "graphics/surface.h"
 #include "access/debugger.h"
+#include "access/events.h"
 
 /**
  * This is the namespace of the Access engine.
@@ -65,6 +66,11 @@ private:
 	const AccessGameDescription *_gameDescription;
 	Common::RandomSource _randomSource;
 	
+	Graphics::Surface _buffer1;
+	Graphics::Surface _buffer2;
+	Graphics::Surface _vidbuf;
+	Graphics::Surface _plotBuf;
+
 	/**
 	 * Handles basic initialisation
 	 */
@@ -75,6 +81,7 @@ protected:
 	virtual bool hasFeature(EngineFeature f) const;
 public:
 	Debugger *_debugger;
+	EventsManager *_events;
 public:
 	AccessEngine(OSystem *syst, const AccessGameDescription *gameDesc);
 	virtual ~AccessEngine();

engines/access/events.cpp

@@ -0,0 +1,106 @@
+/* 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 "common/scummsys.h"
+#include "graphics/cursorman.h"
+#include "common/events.h"
+#include "engines/util.h"
+#include "access/access.h"
+#include "access/events.h"
+
+namespace Access {
+
+EventsManager::EventsManager(AccessEngine *vm): _vm(vm) {
+	_cursorId = CURSOR_NONE;
+	_frameCounter = 10;
+	_priorFrameTime = 0;
+	_leftButton = false;
+}
+
+EventsManager::~EventsManager() {
+}
+
+void EventsManager::setCursor(CursorType cursorId) {
+	_cursorId = cursorId;
+}
+
+void EventsManager::showCursor() {
+	CursorMan.showMouse(true);
+}
+
+void EventsManager::hideCursor() {
+	CursorMan.showMouse(false);
+}
+
+bool EventsManager::isCursorVisible() {
+	return CursorMan.isVisible();
+}
+
+void EventsManager::pollEvents() {
+	checkForNextFrameCounter();
+
+	Common::Event event;
+	while (g_system->getEventManager()->pollEvent(event)) {
+		// Handle keypress
+		switch (event.type) {
+		case Common::EVENT_QUIT:
+		case Common::EVENT_RTL:
+			return;
+
+		case Common::EVENT_KEYDOWN:
+			// Check for debugger
+			if (event.kbd.keycode == Common::KEYCODE_d && (event.kbd.flags & Common::KBD_CTRL)) {
+				// Attach to the debugger
+				_vm->_debugger->attach();
+				_vm->_debugger->onFrame();
+			}
+			return;
+		case Common::EVENT_KEYUP:
+			return;
+		case Common::EVENT_LBUTTONDOWN:
+			_leftButton = true;
+			break;
+		case Common::EVENT_LBUTTONUP:
+			_leftButton = false;
+			break;
+		default:
+ 			break;
+		}
+	}
+}
+
+void EventsManager::checkForNextFrameCounter() {
+	// Check for next game frame
+	uint32 milli = g_system->getMillis();
+	if ((milli - _priorFrameTime) >= GAME_FRAME_TIME) {
+		++_frameCounter;
+		_priorFrameTime = milli;
+
+		// Give time to the debugger
+		_vm->_debugger->onFrame();
+
+		// Signal the ScummVM debugger
+		_vm->_debugger->onFrame();
+	}
+}
+
+} // End of namespace Access

engines/access/events.h

@@ -0,0 +1,86 @@
+/* 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.
+ *
+ */
+
+#ifndef ACCESS_EVENTS_H
+#define ACCESS_EVENTS_H
+
+#include "common/scummsys.h"
+#include "common/events.h"
+#include "common/stack.h"
+
+namespace Access {
+
+enum CursorType { CURSOR_NONE = 0 };
+
+#define GAME_FRAME_RATE 50
+#define GAME_FRAME_TIME (1000 / GAME_FRAME_RATE)
+
+class AccessEngine;
+
+class EventsManager {
+private:
+	AccessEngine *_vm;
+	uint32 _frameCounter;
+	uint32 _priorFrameTime;
+	Common::Point _mousePos;
+
+	void checkForNextFrameCounter();
+public:
+	CursorType _cursorId;
+	bool _leftButton;
+public:
+	/**
+	 * Constructor
+	 */
+	EventsManager(AccessEngine *vm);
+
+	/**
+	 * Destructor
+	 */
+	~EventsManager();
+
+	/**
+	 * Sets the cursor
+	 */
+	void setCursor(CursorType cursorId);
+
+	/**
+	 * Show the mouse cursor
+	 */
+	void showCursor();
+
+	/**
+	 * Hide the mouse cursor
+	 */
+	void hideCursor();
+
+	/**
+	 * Returns if the mouse cursor is visible
+	 */
+	bool isCursorVisible();
+
+	void pollEvents();
+};
+
+} // End of namespace Access
+
+#endif /* ACCESS_EVENTS_H */

engines/access/module.mk

@@ -3,7 +3,8 @@ MODULE := engines/access
 MODULE_OBJS := \
 	access.o \
 	debugger.o \
-	detection.o
+	detection.o \
+	events.o
 
 # This module can be built as a plugin
 ifeq ($(ENABLE_ACCESS), DYNAMIC_PLUGIN)