changed signed handling

direct/src/distributed/ClockDelta.py

@@ -23,8 +23,9 @@ NetworkTimePrecision = 100.0
 
 # These values are derived from the above.
 NetworkTimeMask = (1 << NetworkTimeBits) - 1
+NetworkTimeSignedMask = NetworkTimeMask >> 1 # the max absolute value bits.
 NetworkTimeTopBits = 32 - NetworkTimeBits
-MaxTimeDelta = (NetworkTimeMask / 2.0) / NetworkTimePrecision
+MaxTimeDelta = NetworkTimeSignedMask / NetworkTimePrecision
 
 # This is the maximum number of seconds by which we expect our clock
 # (or the server's clock) to drift over an hour.
@@ -310,6 +311,13 @@ class ClockDelta(DirectObject.DirectObject):
         Preserves the lower NetworkTimeBits of the networkTime value,
         and extends the sign bit all the way up.
         """
-        return ((networkTime & NetworkTimeMask) << NetworkTimeTopBits) >> NetworkTimeTopBits
+        if networkTime < 0:
+            # flip the sign, mask it as if it were positive, flip the sign back:
+            r = (networkTime * -1 & NetworkTimeSignedMask) * -1
+        else:
+            r = networkTime & NetworkTimeSignedMask
+        assert -32768 <= r <= 32767
+        return r
+
 
 globalClockDelta = ClockDelta()

direct/src/showbase/PythonUtil.py

@@ -1098,7 +1098,7 @@ def randInt32(rng=random.random):
     """
     i = int(rng() * 0x7FFFFFFF)
     if rng() < .5:
-        i += 0x80000000
+        i *= -1
     return i
 
 class Enum: