STARTREK: Improve game responsiveness

- Add a delay after screen updates
- Do not update the screen when drawing the background - this is unnecessary
- Fix memory leak when drawing the background

5 files changed, 13 insertions, 2 deletions

diff --git a/engines/startrek/events.cpp b/engines/startrek/events.cpp
index 8e7d2c1884..d8935bd432 100644
--- a/engines/startrek/events.cpp
+++ b/engines/startrek/events.cpp
@@ -43,6 +43,7 @@ void StarTrekEngine::pollEvents(bool queueEvents) {
 
 			// WORKAROUND: this improves the responsiveness of the mouse.
 			_system->updateScreen();
+			_system->delayMillis(10);
 			break;
 
 		case Common::EVENT_LBUTTONDOWN:
diff --git a/engines/startrek/graphics.cpp b/engines/startrek/graphics.cpp
index f92ef77594..5c6a1441b6 100644
--- a/engines/startrek/graphics.cpp
+++ b/engines/startrek/graphics.cpp
@@ -131,6 +131,7 @@ void Graphics::clearScreenAndPriBuffer() {
 	surface->fillRect(_screenRect, 0);
 	_vm->_system->unlockScreen();
 	_vm->_system->updateScreen();
+	_vm->_system->delayMillis(10);
 }
 
 void Graphics::loadPalette(const Common::String &paletteName) {
@@ -200,6 +201,7 @@ void Graphics::setPaletteFadeLevel(byte *palData, int fadeLevel) {
 	// FIXME: this isn't supposed to flush changes to graphics, only palettes.
 	// Might not matter...
 	_vm->_system->updateScreen();
+	_vm->_system->delayMillis(10);
 }
 
 void Graphics::incPaletteFadeLevel() {
@@ -636,6 +638,7 @@ void Graphics::updateScreen() {
 	}
 
 	_vm->_system->updateScreen();
+	_vm->_system->delayMillis(10);
 }
 
 Sprite *Graphics::getSpriteAt(int16 x, int16 y) {
@@ -759,8 +762,10 @@ void Graphics::drawBackgroundImage(const char *filename) {
 
 	_vm->_system->getPaletteManager()->setPalette(palette, 0, 256);
 	_vm->_system->copyRectToScreen(pixels, width, xoffset, yoffset, width, height);
-	_vm->_system->updateScreen();
+	//_vm->_system->updateScreen();
+	//_vm->_system->delayMillis(10);
 
+	delete[] pixels;
 	delete[] palette;
 }
 
diff --git a/engines/startrek/intro.cpp b/engines/startrek/intro.cpp
index 745b8fefc3..84a8208c34 100644
--- a/engines/startrek/intro.cpp
+++ b/engines/startrek/intro.cpp
@@ -50,6 +50,7 @@ void StarTrekEngine::playIntro() {
 	_sound->playVoc("logo");
 	_gfx->copyBackgroundScreen();
 	_system->updateScreen();
+	_system->delayMillis(10);
 	_gfx->fadeinScreen();
 
 	uint32 clockTicks = _clockTicks;
diff --git a/engines/startrek/menu.cpp b/engines/startrek/menu.cpp
index 72b72d94b5..fdbbf1911d 100644
--- a/engines/startrek/menu.cpp
+++ b/engines/startrek/menu.cpp
@@ -1027,6 +1027,7 @@ void StarTrekEngine::showRepublicMap(int16 arg0, int16 turbolift) {
 		_gfx->setBackgroundImage(_gfx->loadBitmap("veng9b"));
 		_gfx->copyBackgroundScreen();
 		_system->updateScreen();
+		_system->delayMillis(10);
 		_gfx->setPri(15);
 		_gfx->fadeinScreen();
 
@@ -1077,6 +1078,7 @@ void StarTrekEngine::showRepublicMap(int16 arg0, int16 turbolift) {
 	_gfx->setBackgroundImage(_gfx->loadBitmap("veng9"));
 	_gfx->copyBackgroundScreen();
 	_system->updateScreen();
+	_system->delayMillis(10);
 	_gfx->setPri(15);
 
 	Sprite someSprite;
@@ -1162,6 +1164,7 @@ lclick:
 	_gfx->setBackgroundImage(_gfx->loadBitmap(_screenName));
 	_gfx->copyBackgroundScreen();
 	_system->updateScreen();
+	_system->delayMillis(10);
 
 	_gfx->drawAllSprites();
 
diff --git a/engines/startrek/startrek.cpp b/engines/startrek/startrek.cpp
index d347055efb..85129117ae 100644
--- a/engines/startrek/startrek.cpp
+++ b/engines/startrek/startrek.cpp
@@ -262,6 +262,7 @@ void StarTrekEngine::runTransportSequence(const Common::String &name) {
 	_gfx->loadPalette("palette");
 	_gfx->drawDirectToScreen(bgImage);
 	_system->updateScreen();
+	_system->delayMillis(10);
 
 	for (int i = 0; i < (_awayMission.redshirtDead ? 3 : 4); i++) {
 		Common::String filename = getCrewmanAnimFilename(i, name);
@@ -604,7 +605,7 @@ void StarTrekEngine::playMovieMac(Common::String filename) {
 			if (event.type == Common::EVENT_KEYDOWN && event.kbd.keycode == Common::KEYCODE_ESCAPE)
 				continuePlaying = false;
 
-		g_system->delayMillis(10);
+		_system->delayMillis(10);
 	}
 
 	delete qtDecoder;