I am trying to create an animation system and need to keep track of how much time has passed so that I can change the frame of the animation on time. However I am having trouble keeping track of when “t”, the total time in milliseconds, passes a set integer, 175, because the framerate of 60 causes uncommon numbers.

I have tried simply using a modulus operator to get it to work but that doesn’t work. I can’t wrap my head around this myself, any help is appreciated.

import pygame, sys
from pygame.math import Vector2

WIDTH, HEIGHT = 600, 400
pygame.init()
screen = pygame.display.set_mode((WIDTH, HEIGHT))
clock = pygame.time.Clock()
fps = 60
dt = 0 #Delta time
t = 0 #Time in milliseconds

class AnimationController:
    def __init__(self, animations, animation, frame, frameGap=175):
        #Load all animations
        self.animations = []
        for anim in animations:
            list = []
            for img in anim:
                list.append(pygame.image.load(f'{img}').convert_alpha())
            self.animations.append(list)
        self.animation = animation
        self.frame = frame
        self.frameGap = frameGap

    def UpdateFrame(self, time):
        #self.animations[animation number][frame number]
        pass

objects = []
class Object:
    def __init__(self, pos, size, velo=Vector2(), texture=(255,0,0)):
        self.pos = pos
        self.size = size
        self.velo = velo
        if isinstance(texture, str):
            self.texture = pygame.image.load(texture).convert_alpha()
        else:
            self.texture = texture
        objects.append(self)

    def rect(self):
        return pygame.Rect(self.pos.x, self.pos.y, self.size.x, self.size.y)
    
    def Draw(self):
        if isinstance(self.texture, tuple):
            pygame.draw.rect(screen, self.texture, self.rect())
        if isinstance(self.texture, pygame.Surface):
            screen.blit(self.texture, self.pos)
        #Add and implement an Animator() class

    def Update(self, friction, dt):
        self.velo.x *= 1/(1+(friction*dt))
        self.pos.x += self.velo.x*dt
        for object in objects:
            if object != self and object.rect().colliderect(self.rect()):
                if self.velo.x > 0:
                    self.pos.x = object.pos.x - self.size.x
                if self.velo.x < 0:
                    self.pos.x = object.pos.x + object.size.x

        self.velo.y *= 1/(1+(friction*dt))
        self.pos.y += self.velo.y*dt
        for object in objects:
            if object != self and object.rect().colliderect(self.rect()):
                if self.velo.y > 0:
                    self.pos.y = object.pos.y - self.size.y
                if self.velo.y < 0:
                    self.pos.y = object.pos.y + object.size.y

player = Object(Vector2(290,190),Vector2(20,20))
wall = Object(Vector2(100,100),Vector2(50,50))

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()

    keys = pygame.key.get_pressed()
    if keys[pygame.K_UP]:
        player.velo.y = -5
    if keys[pygame.K_DOWN]:
        player.velo.y = 5
    if keys[pygame.K_LEFT]:
        player.velo.x = -5
    if keys[pygame.K_RIGHT]:
        player.velo.x = 5
    

    screen.fill((255,255,255))
    for object in objects:
        object.Draw()
    player.Update(0.1, dt)

    pygame.display.update()
    dt = clock.tick(fps)/10
    t += dt*10
    if t % 175 == 0:
        print(t)