Concept: Framerate

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Concept: Framerate#

You can configure how often the act() method is called by adjusting the attributes world.fps and world.speed.

  • world.fps defines the frame rate. Like a flipbook where pages are turned at a fixed speed, the frame rate defines how many times per second the screen is redrawn. The default value is 60, which means 60 frames per second.

  • world.frame stores the current frame count. It increases continuously from the start of the program.

  • world.speed defines how often the game logic (e.g., act) is called per second. A value of 3 means the act() function is called every third frame.

Example#

import miniworlds 

world = miniworlds.World()
world.size = (120, 210)

@world.register
def on_setup(self):
    world.fps = 1
    world.speed = 3

@world.register
def act(self):
    print(world.frame)

world.run()

Output:#

3
6
9
12
15

Explanation:

  • The program runs 1 frame per second.

  • The act() method is called every 3rd frame, so it is called every 3 seconds.

  • This results in a slow and steady frame count being printed.

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