Changeset 273:066f7271e849 for src/mlx

Timestamp:

07/03/12 17:30:04 (12 years ago)

Author:

István Váradi <ivaradi@…>

Branch:

default

Phase:

public

Message:

Added the playback of approach callouts

Location:

src/mlx

Files:

• acft.py (modified) (1 diff)
• checks.py (modified) (1 diff)
• config.py (modified) (2 diffs)
• pyuipc_sim.py (modified) (2 diffs)

src/mlx/acft.py

@@ -122 +122 @@
         
         self._checkers.append(checks.ReverserChecker())
+
+        if flight.aircraftType is not None and config.enableApproachCallouts:
+            approachCallouts = flight.config.getApproachCallouts(flight.aircraftType)
+            if approachCallouts:
+                self._checkers.append(checks.ApproachCalloutsPlayer(approachCallouts))
 
         self._smoothedIAS = SmoothedValue()

src/mlx/checks.py

@@ -219 +219 @@
 #---------------------------------------------------------------------------------------
 
+class ApproachCalloutsPlayer(StateChecker):
+    """A state checker that plays a sequence of approach callouts.
+
+    It tracks the altitude during the descent and landing phases and
+    if the altitude crosses one that has a callout associated with and
+    the vertical speed is negative, that callout will be played."""    
+    def __init__(self, approachCallouts):
+        """Construct the approach callouts player."""
+        self._approachCallouts = approachCallouts
+        self._altitudes = approachCallouts.getAltitudes(descending = False)
+
+    def check(self, flight, aircraft, logger, oldState, state):
+        """Check if we need to play a callout."""
+        if (flight.stage==const.STAGE_DESCENT or \
+            flight.stage==const.STAGE_LANDING) and state.vs<0:
+            oldRadioAltitude = oldState.radioAltitude
+            radioAltitude = state.radioAltitude
+            for altitude in self._altitudes:
+                if radioAltitude<=altitude and \
+                   oldRadioAltitude>altitude:
+                    startSound(self._approachCallouts[altitude])
+                    break
+
+#---------------------------------------------------------------------------------------
+
 class StateChangeLogger(StateChecker):
     """Base class for classes the instances of which check if a specific change has

src/mlx/config.py

@@ -157 +157 @@
             index += 1
 
+    def getAltitudes(self, descending = True):
+        """Get the altitudes in decreasing order by default."""
+        altitudes = self._mapping.keys()
+        altitudes.sort(reverse = descending)
+        return altitudes
+
+    def __nonzero__(self):
+        """Return if there is anything in the mapping."""
+        return not not self._mapping
+
     def __eq__(self, other):
         """Determine if the approach callout mapping is equal to the given
@@ -172 +182 @@
 
     def __getitem__(self, altitude):
-        """Get the file that is associated with the highest altitude not higher
-        than the given one.
+        """Get the file that is associated with the given altitude.
 
         If no such file found, return None."""
-        candidate = None
-        for (alt, path) in self._mapping.iteritems():
-            if alt<=altitude:
-                if candidate is None or alt>candidate[0]:
-                    candidate = (alt, path)
-
-        return candidate
+        return self._mapping[altitude] if altitude in self._mapping else None
 
     def __iter__(self):
         """Iterate over the pairs of altitudes and paths in decreasing order of
         the altitude."""
-        altitudes = self._mapping.keys()
-        altitudes.sort(reverse = True)
+        altitudes = self.getAltitudes()
 
         for altitude in altitudes:

src/mlx/pyuipc_sim.py

@@ -552 +552 @@
         elif offset==0x0570:       # Altitude
             self.altitude = value / const.FEETTOMETRES / 65536.0 / 65536.0
+            self.radioAltitude = self.altitude - 517
         elif offset==0x0578:       # Pitch
             self.pitch = value * 360.0 / 65536.0 / 65536.0
@@ -668 +669 @@
             raise FSUIPCException(ERR_DATA)
         elif offset==0x31e4:       # Radio altitude
+            self.radioAltitude = value / const.FEETTOMETRES / 65536.0
+            self.altitude = self.radioAltitude + 517
+        elif offset==0x31e4:       # Radio altitude
             raise FSUIPCException(ERR_DATA)
         elif offset==0x320c: