Revised mousewheel handling (#294)

src/Cocoa/MyOpenGLView.h

@@ -41,6 +41,7 @@ MA 02110-1301, USA.
 #define NUM_KEYS			320
 #define MOUSE_DOUBLE_CLICK_INTERVAL	0.40
 #define OOMOUSEWHEEL_EVENTS_DELAY_INTERVAL	0.05
+#define OOMOUSEWHEEL_DELTA	1.0
 
 @class Entity, GameController;
 
@@ -135,7 +136,7 @@ extern int debug;
 	NSMutableString		*typedString;
 	
 	NSPoint				virtualJoystickPosition;
-	enum MouseWheelStatus	_mouseWheelState;
+	float				_mouseWheelDelta;
 	
 	NSSize				viewSize;
 	NSSize				backingViewSize;
@@ -202,6 +203,8 @@ extern int debug;
 - (BOOL) isCapsLockOn;
 - (int) numKeys;
 - (int) mouseWheelState;
+- (float) mouseWheelDelta;
+- (void) setMouseWheelDelta: (float) newWheelDelta;
 
 // Command-key combinations need special handling.
 - (BOOL) isCommandQDown;

src/Cocoa/MyOpenGLView.m

@@ -264,7 +264,7 @@ static void UnapplyCursorState(OOMouseInteractionMode mode);
 - (void) pollControls
 {
 	if ([NSDate timeIntervalSinceReferenceDate] > timeIntervalAtLastMouseWheel + OOMOUSEWHEEL_EVENTS_DELAY_INTERVAL)
-		_mouseWheelState = gvMouseWheelNeutral;
+		_mouseWheelDelta = 0.0f;
 }
 
 - (void) drawRect:(NSRect)rect
@@ -745,7 +745,6 @@ FAIL:
 	CGPoint centerPoint = CGPointMake(viewSize.width / 2.0, viewSize.height / 2.0);
 	CGWarpMouseCursorPosition(centerPoint);
 	[self setVirtualJoystick:0.0 :0.0];
-	_mouseWheelState = gvMouseWheelNeutral;
 }
 
 
@@ -782,10 +781,19 @@ FAIL:
 		return;
 	
 	if (dy > 0)
-		_mouseWheelState = gvMouseWheelUp;
+	{
+		if (_mouseWheelDelta >= 0)
+			_mouseWheelDelta += dy;
 		else
-		_mouseWheelState = gvMouseWheelDown;
-
+			_mouseWheelDelta = 0;
+	}
+	else
+	{
+		if (_mouseWheelDelta <= 0)
+			_mouseWheelDelta += dy;
+		else
+			_mouseWheelDelta = 0;
+	}
 	timeIntervalAtLastMouseWheel = [NSDate timeIntervalSinceReferenceDate];
 }
 
@@ -1033,7 +1041,24 @@ FAIL:
 
 - (int) mouseWheelState
 {
-	return _mouseWheelState;
+	if (_mouseWheelDelta > 0.0f)
+		return gvMouseWheelUp;
+	else if (_mouseWheelDelta < 0.0f)
+		return gvMouseWheelDown;
+	else
+		return gvMouseWheelNeutral;
+}
+
+
+- (float) mouseWheelDelta
+{
+	return _mouseWheelDelta / OOMOUSEWHEEL_DELTA;
+}
+
+
+- (void) setMouseWheelDelta: (float) newWheelDelta
+{
+	_mouseWheelDelta = newWheelDelta * OOMOUSEWHEEL_DELTA;
 }
 
 

src/Core/Entities/PlayerEntity.m

@@ -3106,6 +3106,21 @@ NSComparisonResult marketSorterByMassUnit(id a, id b, void *market);
 		DESTROY(lastShot);
 	}
 	
+	// update mousewheel status
+	UPDATE_STAGE(@"updating mousewheel delta");
+	MyOpenGLView *gView = [UNIVERSE gameView];
+	float mouseWheelDelta = [gView mouseWheelDelta];
+	if (mouseWheelDelta > 0.0f)
+	{
+		if (mouseWheelDelta < delta_t)  [gView setMouseWheelDelta:0.0f];
+		else  [gView setMouseWheelDelta:mouseWheelDelta - delta_t];
+	}
+	else if (mouseWheelDelta < 0.0f)
+	{
+		if (mouseWheelDelta > -delta_t)  [gView setMouseWheelDelta:0.0f];
+		else  [gView setMouseWheelDelta:mouseWheelDelta + delta_t];
+	}
+	
 	STAGE_TRACKING_END
 }
 

src/Core/Entities/PlayerEntityControls.m

@@ -911,13 +911,14 @@ static NSTimeInterval	time_last_frame;
 				exceptionContext = @"thrust";
 				// DJS: Thrust can be an axis or a button. Axis takes precidence.
 				double reqSpeed=[stickHandler getAxisState: AXIS_THRUST];
+				float mouseWheelDeltaFactor = mouse_control_on ? fabs([gameView mouseWheelDelta]) : 1.0f;
 				// Updated DJS original code to fix BUG #17482 - (Getafix 2010/09/13)
 				if (([gameView isDown:key_increase_speed] ||
 						joyButtonState[BUTTON_INCTHRUST] ||
 						((mouse_control_on)&&([gameView mouseWheelState] == gvMouseWheelUp) && !([UNIVERSE viewDirection] && [gameView isCapsLockOn])))
 					&& (flightSpeed < maxFlightSpeed) && (!afterburner_engaged))
 				{
-					flightSpeed += speed_delta * delta_t;
+					flightSpeed += speed_delta * delta_t * mouseWheelDeltaFactor;
 				}
 				
 				if (([gameView isDown:key_decrease_speed] ||
@@ -925,7 +926,7 @@ static NSTimeInterval	time_last_frame;
 						((mouse_control_on)&&([gameView mouseWheelState] == gvMouseWheelDown) && !([UNIVERSE viewDirection] && [gameView isCapsLockOn])))
 					&& (!afterburner_engaged))
 				{
-					flightSpeed -= speed_delta * delta_t;	
+					flightSpeed -= speed_delta * delta_t * mouseWheelDeltaFactor;	
 					// ** tgape ** - decrease obviously means no hyperspeed
 					hyperspeed_engaged = NO;
 				}

src/SDL/MyOpenGLView.h

@@ -48,6 +48,7 @@ MA 02110-1301, USA.
 #define NUM_KEYS			320
 #define MOUSE_DOUBLE_CLICK_INTERVAL	0.40
 #define OOMOUSEWHEEL_EVENTS_DELAY_INTERVAL	0.05
+#define OOMOUSEWHEEL_DELTA	120 // Same as Windows WHEEL_DELTA
 
 #define SNAPSHOTS_PNG_FORMAT		1
 
@@ -192,7 +193,7 @@ extern int debug;
    // Mouse mode indicator (for mouse movement model)
    BOOL					mouseInDeltaMode;
    
-   int					_mouseWheelState;
+   float				_mouseWheelDelta;
 }
 
 - (void) initSplashScreen;
@@ -279,6 +280,8 @@ extern int debug;
 - (BOOL) isCapsLockOn;
 - (int) numKeys;
 - (int) mouseWheelState;
+- (float) mouseWheelDelta;
+- (void) setMouseWheelDelta: (float) newWheelDelta;
 
 // Command-key combinations need special handling. SDL stubs for these mac functions.
 - (BOOL) isCommandQDown;

src/SDL/MyOpenGLView.m

@@ -334,7 +334,7 @@ MA 02110-1301, USA.
 
 	timeIntervalAtLastClick = timeSinceLastMouseWheel = [NSDate timeIntervalSinceReferenceDate];
 	
-	_mouseWheelState = gvMouseWheelNeutral;
+	_mouseWheelDelta = 0.0f;
 
 	m_glContextInitialized = NO;
 
@@ -1577,7 +1577,24 @@ MA 02110-1301, USA.
 
 - (int) mouseWheelState
 {
-	return _mouseWheelState;
+	if (_mouseWheelDelta > 0.0f)
+		return gvMouseWheelUp;
+	else if (_mouseWheelDelta < 0.0f)
+		return gvMouseWheelDown;
+	else
+		return gvMouseWheelNeutral;
+}
+
+
+- (float) mouseWheelDelta
+{
+	return _mouseWheelDelta / OOMOUSEWHEEL_DELTA;
+}
+
+
+- (void) setMouseWheelDelta: (float) newWheelDelta
+{
+	_mouseWheelDelta = newWheelDelta * OOMOUSEWHEEL_DELTA;
 }
 
 
@@ -1639,6 +1656,12 @@ MA 02110-1301, USA.
 
 			case SDL_MOUSEBUTTONDOWN:
 				mbtn_event = (SDL_MouseButtonEvent*)&event;
+#if OOLITE_LINUX
+				short inDelta = 0;
+#else
+				// specially built SDL.dll is required for this
+				short inDelta = mbtn_event->wheelDelta;
+#endif
 				switch(mbtn_event->button)
 				{
 					case SDL_BUTTON_LEFT:
@@ -1655,11 +1678,30 @@ MA 02110-1301, USA.
 						[self resetMouse]; // Will set mouseWarped to YES
 						break;
 					// mousewheel stuff
+#if OOLITE_LINUX
 					case SDL_BUTTON_WHEELUP:
-						_mouseWheelState = gvMouseWheelUp;
-						break;
+						inDelta = OOMOUSEWHEEL_DELTA;
+						// allow fallthrough
 					case SDL_BUTTON_WHEELDOWN:
-						_mouseWheelState = gvMouseWheelDown;
+						if (inDelta == 0)  inDelta = -OOMOUSEWHEEL_DELTA;
+#else
+					case SDL_BUTTON_WHEELUP:
+					case SDL_BUTTON_WHEELDOWN:
+#endif
+						if (inDelta > 0)
+						{
+							if (_mouseWheelDelta >= 0.0f)
+								_mouseWheelDelta += inDelta;
+							else
+								_mouseWheelDelta = 0.0f;
+						}
+						else if (inDelta < 0)
+						{
+							if (_mouseWheelDelta <= 0.0f)
+								_mouseWheelDelta += inDelta;
+							else
+								_mouseWheelDelta = 0.0f;
+						}
 						break;
 				}
 				break;
@@ -2296,7 +2338,7 @@ keys[a] = NO; keys[b] = NO; \
 	// if needed
 	if (timeNow >= timeSinceLastMouseWheel + OOMOUSEWHEEL_EVENTS_DELAY_INTERVAL)
 	{
-		_mouseWheelState = gvMouseWheelNeutral;
+		_mouseWheelDelta = 0.0f;
 	}
 }