modified behaviour of PropertySensor and MessageSensor on popular request.

Logic systems should be improved, with consistent Level and Edge triggering usage in the logic bricks.

source/gameengine/GameLogic/SCA_PropertySensor.cpp

@@ -260,7 +260,16 @@ bool	SCA_PropertySensor::CheckPropertyCondition()
 	default:
 		; /* error */
 	}
-	m_recentresult=result;
+
+	//the concept of Edge and Level triggering has unwanted effect for KX_PROPSENSOR_CHANGED
+	//see Game Engine bugtracker [ #3809 ]
+	if (m_checktype != KX_PROPSENSOR_CHANGED)
+	{
+		m_recentresult=result;
+	} else
+	{
+		m_recentresult=true;
+	}
 	return result;
 }
 

source/gameengine/Ketsji/KXNetwork/KX_NetworkMessageSensor.cpp

@@ -149,7 +149,10 @@ bool KX_NetworkMessageSensor::Evaluate(CValue* event)
 bool KX_NetworkMessageSensor::IsPositiveTrigger()
 {
 //	printf("KX_NetworkMessageSensor IsPositiveTrigger\n");
-	return m_IsUp;
+	//attempt to fix [ #3809 ] IPO Actuator does not work with some Sensors
+	//a better solution is to properly introduce separate Edge and Level triggering concept
+
+	return true;//m_IsUp;
 }
 
 /* --------------------------------------------------------------------- */