Pygame day 5: animations

Today we are going to see how to animate sprites

import pygame
import glob
 
 
class MySprite(pygame.sprite.Sprite):
    def __init__(self):
        super(MySprite, self).__init__()
 
        self.images = []

        # === to put the image in order === 1, 2, 3.... 9, 10, 11
        # otherwise it would go 1, 11, 12, ... 2, 3
        self.imageslist = glob.glob("png\\*.png")

        self.idle = self.get_images("Idle")
        self.walk = self.get_images("Walk")
        self.jump = self.get_images("Jump")
        print(self.idle)
        self.index = 0
        self.rect = pygame.Rect(5, 5, 150, 198)
        self.state = 0
        self.images = self.idle
        # my_group.add(self)

    def get_images(self, name):
        ''' give the starting of the name of animation to load the
        images for that action 
        
        to add an animation images list:

        self.shoot = get_images('Shoot')

        * all images must start with Shoot and end with a progressive
        number in folder png

        if you want to animate enemies, give the images the
        name enemy1Idle 1 ..., enemy1Walk 1... etc
        enemy2Idle1...
        '''
        temp = [i for i in self.imageslist if i.startswith(f"png\\{name}")]
        first = len(temp[0])
        idle1 = []
        idle2 = []
        for i in temp:
            if len(i) == first:
                idle1.append(i)
            else:
                idle2.append(i)
        temp = idle1 + idle2 # now the order should be correct
        temp = [pygame.image.load(i).convert() for i in temp]
        return temp

    def user_interaction(self):
        ''' called by update of this class '''
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
            if event.type == pygame.KEYDOWN:
                # IF YOU PRESS RIGHT PLAYER WALKS (see update method)
                if event.key == pygame.K_RIGHT:
                    self.state = 1
                # IF YOU PRESS UP PLAYER JUMPS (see update method)
                if event.key == pygame.K_UP:
                    self.state = 2
            # WHEN YOU DO not HOLD key it goes back to IDLE
            if event.type == pygame.KEYUP:
                self.state = 0




    def update(self):
        # CHECK KEY PRESSED
        self.user_interaction()

        # LOADS THE ANIMATION FOR THE ACTION AS YOU PRESS A KEY
        '''
        --------------------
        state
        0           idle
        1           walk
        2           jump

        ---------------------
        '''
        if self.state == 0:
                self.images = self.idle
        # YOU PRESS RIGHT ARROW: WALKS
        elif self.state == 1:
                self.images = self.walk
        # YOU PRESS UP, JUMPS
        elif self.state == 2:
                self.images = self.jump

        # ITERATE THROUGH IMAGES FOR ANIMATION
        if int(self.index) >= len(self.images):
                self.index = 0
        self.image = self.images[int(self.index)]
        self.index += .3


def show_fps():
    ''' shows the frame rate on the screen '''
    fps_text = str(int(clock.get_fps())) # get the clocl'fps
    # render a text surface
    fps_surface = fps_font.render(fps_text, 1, pygame.Color("black"))
    # blit the background surface
    screen.blit(fps_bg, (0, 0))
    # blit the text surface on the backgroud
    screen.blit(fps_surface, (0, 0))

pygame.init()
SIZE = WIDTH, HEIGHT = 600, 550 #the width and height of our screen
FPS = 60 #Frames per second
fps_bg = pygame.Surface((20, 25)) # a surface for fps
fps_bg.fill((255, 255, 255)) # the color of the surface
fps_font = pygame.font.SysFont("Arial", 20) # a font for the fps
clock = pygame.time.Clock()
screen = pygame.display.set_mode(SIZE)


def main():
    pygame.display.set_caption("Trace")
    player = MySprite()
    my_group = pygame.sprite.Group(player)
    while True:
        # to get the users events see self.user_interaction in MySprite
        my_group.update()
        # screen.fill((0,0,0))
        my_group.draw(screen)
        show_fps()
        pygame.display.update()
        clock.tick(FPS)
    pygame.quit()
 
if __name__ == '__main__':
    main()