ASYLUM: Added a back buffer again. The icons in the top row should be highlighted properly now

git-svn-id: http://asylumengine.googlecode.com/svn/trunk@64 0bfb4aae-4ea4-11de-8d8d-752d95cf3e3c

engines/asylum/asylum.cpp

@@ -45,6 +45,7 @@ AsylumEngine::AsylumEngine(OSystem *system, Common::Language language)
 AsylumEngine::~AsylumEngine() {
     //Common::clearAllDebugChannels();
 	delete _resMgr;
+	_backBuffer.free();
 }
 
 Common::Error AsylumEngine::run() {
@@ -60,6 +61,8 @@ Common::Error AsylumEngine::init() {
 	// initialize engine objects
 
 	initGraphics(640, 480, true);
+	_backBuffer.create(640, 480, 1);
+
 	_resMgr = new ResourceManager(this);
 
 	// initializing game
@@ -76,6 +79,7 @@ Common::Error AsylumEngine::init() {
 
 Common::Error AsylumEngine::go() {
 	// Play intro movie
+	int mouseX = 0, mouseY = 0;
 
 	_resMgr->loadVideo(0);
 
@@ -90,6 +94,8 @@ Common::Error AsylumEngine::go() {
 	while (!shouldQuit()) {
 		Common::Event ev;
 
+		// Copy background image
+		_system->copyRectToScreen((byte *)_backBuffer.pixels, _backBuffer.w, 0, 0, _backBuffer.w, _backBuffer.h);
 
 		if (em->pollEvent(ev)) {
 			if (ev.type == Common::EVENT_KEYDOWN) {
@@ -101,18 +107,21 @@ Common::Error AsylumEngine::go() {
 				}
 				//if (ev.kbd.keycode == Common::KEYCODE_RETURN)
 			} else if (ev.type == Common::EVENT_MOUSEMOVE) {
+				mouseX = ev.mouse.x;
+				mouseY = ev.mouse.y;
+			}
+		}
+
 		// TODO: Just some proof-of concept to change icons here for now
-				if (ev.mouse.y >= 20 && ev.mouse.y <= 20 + 48) {
+		if (mouseY >= 20 && mouseY <= 20 + 48) {
 			for (int i = 0; i <= 5; i++) {
 				int curX = 40 + i * 100;
-						if (ev.mouse.x >= curX && ev.mouse.x <= curX + 55) {
+				if (mouseX >= curX && mouseX <= curX + 55) {
 					GraphicResource *res = _resMgr->getGraphic(1, i + 4, 0);
 					_system->copyRectToScreen(res->data, res->width, curX, 20, res->width, res->height);
 				}
 			}
 		}
-			}
-		}
 
 		_system->updateScreen();
 		_system->delayMillis(10);
@@ -129,4 +138,14 @@ void AsylumEngine::showMainMenu() {
 	_resMgr->loadMusic();
 }
 
+void AsylumEngine::copyToBackBuffer(int x, int y, int width, int height, byte *buffer) {
+	int h = height;
+	byte *dest = (byte *)_backBuffer.pixels;
+
+	while (h--) {
+		memcpy(dest, buffer, width);
+		dest += 640;
+		buffer += width;
+	}
+}
 } // namespace Asylum

engines/asylum/asylum.h

@@ -28,6 +28,7 @@
 
 #include "engines/engine.h"
 #include "asylum/resman.h"
+#include "graphics/surface.h"
 
 namespace Asylum {
 
@@ -47,11 +48,14 @@ public:
     virtual Common::Error run();
     virtual bool hasFeature(EngineFeature f) const;
 
+	void copyToBackBuffer(int x, int y, int width, int height, byte *buffer);
+
 private:
     Common::Language     _language;
     Common::RandomSource _rnd;
 
     ResourceManager *_resMgr;
+	Graphics::Surface _backBuffer;
 
     void showMainMenu();
 

engines/asylum/resman.cpp

@@ -47,7 +47,7 @@ bool ResourceManager::loadVideo(uint8 fileNum) {
 
 bool ResourceManager::loadGraphic(uint8 fileNum, uint32 offset, uint32 index) {
 	GraphicResource *res = getGraphic(fileNum, offset, index);
-	_vm->_system->copyRectToScreen(res->data, res->width, 0, 0, res->width, res->height);
+	_vm->copyToBackBuffer(0, 0, res->width, res->height, res->data);
 	
 	// TODO proper error check
 	return true;