Merge #487 #509

487: Add time_delta property to PreRender event. r=pathunstrom a=ironfroggy



509: Add 3.9 to CI r=pathunstrom a=astronouth7303

Add 3.9 to CI

Co-authored-by: Calvin Spealman <ironfroggy@gmail.com>
Co-authored-by: ironfroggy <ironfroggy@gmail.com>
Co-authored-by: Jamie Bliss <jamie@ivyleav.es>

.cirrus.yml

@@ -47,12 +47,13 @@ task:
   name: "Linux $IMAGE"
   alias: Tests
   skip: $CIRRUS_BRANCH =~ '.*\.tmp'
-  allow_failures: $IMAGE =~ '.*-rc-.*'
+  allow_failures: $IMAGE =~ '.*[-:]rc-.*'
   env:
     matrix:
       - IMAGE: python:3.6-slim
       - IMAGE: python:3.7-slim
       - IMAGE: python:3.8-slim
+      - IMAGE: python:rc-slim
       - IMAGE: pypy:3.6-slim
 
   container:
@@ -121,7 +122,7 @@ task:
   name: "Windows $IMAGE"
   alias: Tests
   skip: $CIRRUS_BRANCH =~ '.*\.tmp'
-  allow_failures: $IMAGE =~ '.*-rc-.*'
+  allow_failures: $IMAGE =~ '.*[-:]rc-.*'
   windows_container:
     os_version: 2019
     image: $IMAGE
@@ -131,6 +132,7 @@ task:
       - IMAGE: python:3.6-windowsservercore
       - IMAGE: python:3.7-windowsservercore
       - IMAGE: python:3.8-windowsservercore
+      - IMAGE: python:rc-windowsservercore
 
   install_script:
     - C:\Python\python.exe -m pip install --upgrade-strategy eager -U -r requirements-tests.txt

ppb/events.py

@@ -164,6 +164,7 @@ class PreRender:
     strictly for display purposes (like the text of a score board or the
     position of the camera) should happen ``on_pre_render``.
     """
+    time_delta: float  #: Seconds since last PreRender.
     scene: BaseScene = None  #: The currently running scene.
 
 

ppb/systems/renderer.py

@@ -139,6 +139,7 @@ def __init__(
         self.target_frame_rate = target_frame_rate
         self.target_frame_length = 1 / self.target_frame_rate
         self.target_clock = get_time() + self.target_frame_length
+        self.last_frame = get_time()
 
         self._texture_cache = ObjectSideData()
 
@@ -171,9 +172,10 @@ def __exit__(self, *exc):
     def on_idle(self, idle_event: events.Idle, signal):
         t = get_time()
         if t >= self.target_clock:
-            signal(events.PreRender())
+            signal(events.PreRender(t - self.last_frame))
             signal(events.Render())
             self.target_clock = t + self.target_frame_length
+            self.last_frame = t
 
     def on_scene_started(self, scene_started, signal):
         scene = scene_started.scene