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display average frame creation time along with framerate

This commit is contained in:
ohsqueezy 2022-11-30 22:31:36 -05:00
parent 0954cd768f
commit 314b722528
1 changed files with 15 additions and 8 deletions
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23
pgfw/Mainloop.py
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@ -5,6 +5,13 @@ from pygame.time import get_ticks, wait
from .GameChild import GameChild
class Mainloop(GameChild):
"""
Maintain and display framerate. Call the parent's (the main game object) frame method once per frame. If frame skipping is enabled and the frame rate
is below the requested framerate, the frame method will be called multiple times to try to keep pace (although this rarely makes sense, since calling
the frame method multiple times would most likely cause further slow down). It is missing some important game loop features. For example, game logic
is not separated from draw logic, and frame rate is expected to remain constant based on the definition in the config file. The time of each frame is
tracked by the TimeFilter class.
"""
def __init__(self, parent):
GameChild.__init__(self, parent)
@ -13,6 +20,7 @@ class Mainloop(GameChild):
self.actual_frame_duration = 0
self.frames_this_second = 0
self.last_framerate_display = 0
self.frame_times = []
self.load_configuration()
self.init_framerate_display()
self.last_ticks = get_ticks()
@ -40,13 +48,12 @@ class Mainloop(GameChild):
self.render_framerate()
def framerate_display_active(self):
return self.check_command_line(self.framerate_display_flag) or \
self.show_framerate
return self.check_command_line(self.framerate_display_flag) or self.show_framerate
def render_framerate(self):
text = self.font.render(str(self.last_framerate_count), False,
self.framerate_text_color,
self.framerate_text_background)
average_frame_time = sum(self.frame_times) / len(self.frame_times) if self.frame_times else 0
self.frame_times = []
text = self.font.render(f"{self.last_framerate_count} ({average_frame_time: .1f})", False, self.framerate_text_color, self.framerate_text_background)
rect = text.get_rect()
rect.topright = self.framerate_topright
self.framerate_text = text
@ -76,6 +83,7 @@ class Mainloop(GameChild):
last_ticks = self.last_ticks
actual_frame_duration = get_ticks() - last_ticks
last_ticks = get_ticks()
self.frame_times.append(actual_frame_duration)
while actual_frame_duration < self.target_frame_duration:
wait(self.wait_duration)
actual_frame_duration += get_ticks() - last_ticks
@ -96,9 +104,8 @@ class Mainloop(GameChild):
def update_framerate(self):
count = self.frames_this_second + 1
if get_ticks() - self.last_framerate_display > 1000:
if count != self.last_framerate_count:
self.last_framerate_count = count
self.render_framerate()
self.last_framerate_count = count
self.render_framerate()
self.last_framerate_display = get_ticks()
count = 0
self.display_surface.blit(self.framerate_text, self.framerate_text_rect)