15_using_the_sprite_class.py

import pygame
from sys import exit
from random import randint, choice


class Player(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        player_walk_1 = pygame.image.load('graphics/player/player_walk_1.png').convert_alpha()
        player_walk_2 = pygame.image.load('graphics/player/player_walk_2.png').convert_alpha()
        self.player_walk = [player_walk_1, player_walk_2]
        self.player_index = 0
        self.player_jump = pygame.image.load('graphics/player/jump.png').convert_alpha()
        
        self.image = self.player_walk[self.player_index]
        self.rect = self.image.get_rect(midbottom = (80, 300))
        self.gravity = 0
        
        
    def player_input(self):
        keys = pygame.key.get_pressed()
        if keys[pygame.K_SPACE] and self.rect.bottom >= 300:
            self.gravity = -20
        
            
    def apply_gravity(self):
        self.gravity += 1
        self.rect.y += self.gravity
        if self.rect.bottom >= 300:
            self.rect.bottom = 300
        
            
    def animation_state(self):
        if self.rect.bottom < 300:
            self.image = self.player_jump
        else:
            self.player_index += 0.1
            if self.player_index >= len(self.player_walk): self.player_index = 0
            self.image = self.player_walk[int(self.player_index)]
        
            
    def update(self):
        self.player_input()
        self.apply_gravity()
        self.animation_state()

class Obstacle(pygame.sprite.Sprite):
    def __init__(self, type):
        super().__init__()
        
        if type == 'fly':
            fly_1 = pygame.image.load('graphics/fly/fly1.png').convert_alpha()
            fly_2 = pygame.image.load('graphics/fly/fly2.png').convert_alpha()
            self.frames = [fly_1, fly_2]
            y_pos = 210
        else:
            snail_1 = pygame.image.load('graphics/snail/snail1.png').convert_alpha()
            snail_2 = pygame.image.load('graphics/snail/snail2.png').convert_alpha()
            self.frames = [snail_1, snail_2]
            y_pos = 300
            
        self.animation_index = 0
        self.image = self.frames[self.animation_index]
        self.rect = self.image.get_rect(midbottom = (randint(900, 1100), y_pos))
        
        
    def animation_state(self):
        self.animation_index += 0.1
        if self.animation_index >= len(self.frames): self.animation_index = 0
        self.image = self.frames[int(self.animation_index)]
        
        
    def update(self):
        self.animation_state()
        self.rect.x -= 6
        self.destroy()
        
        
    def destroy(self):
        if self.rect.x <= -100:
            self.kill()
        

def display_score():
    current_time = int(pygame.time.get_ticks() / 1000) - start_time
    score_surf = test_font.render(f'Score: {current_time}', False, (64, 64, 64))
    score_rect = score_surf.get_rect(center = (400, 50))
    screen.blit(score_surf, score_rect)
    return current_time

def obstacle_movement(obstacle_list):
    if obstacle_list:
        for obstacle_rect in obstacle_list:
            obstacle_rect.x -= 5
            
            if obstacle_rect.bottom == 300: screen.blit(snail_surf, obstacle_rect)
            else: screen.blit(fly_surf, obstacle_rect)
            
        obstacle_list = [obstacle for obstacle in obstacle_list if obstacle.x > -100]
            
        return obstacle_list
    else: return []

def collisions(player, obstacles):
    if obstacles:
        for obstacle_rect in obstacles:
            if player.colliderect(obstacle_rect): return False
    return True

def collision_sprite():
    if pygame.sprite.spritecollide(player.sprite, obstacle_group, False):
        obstacle_group.empty()
        return False
    else: return True

def player_animation():
    global player_surf, player_index
    
    if player_rect.bottom < 300:
        player_surf = player_jump
    else:
        player_index += 0.1
        if player_index >= len(player_walk): player_index = 0
        player_surf = player_walk[int(player_index)]
        

# Variables
pygame.init()
screen = pygame.display.set_mode((800, 400))
pygame.display.set_caption('Runner')
clock = pygame.time.Clock()
test_font = pygame.font.Font('font/Pixeltype.ttf', 50)
game_active = False
start_time = 0
score = 0


# Groups
player = pygame.sprite.GroupSingle()
player.add(Player())

obstacle_group = pygame.sprite.Group()


sky_surface = pygame.image.load('graphics/Sky.png').convert()
ground_surface = pygame.image.load('graphics/ground.png').convert()

# score_surf = test_font.render('Hello World', False, (64, 64, 64))
# score_rect = score_surf.get_rect(center = (400, 50))


# Snail
snail_frame_1 = pygame.image.load('graphics/snail/snail1.png').convert_alpha()
snail_frame_2 = pygame.image.load('graphics/snail/snail2.png').convert_alpha()
snail_frames = [snail_frame_1, snail_frame_2]
snail_frame_index = 0
snail_surf = snail_frames[snail_frame_index]

# Fly
fly_frame_1 = pygame.image.load('graphics/fly/fly1.png').convert_alpha()
fly_frame_2 = pygame.image.load('graphics/fly/fly2.png').convert_alpha()
fly_frames = [fly_frame_1, fly_frame_2]
fly_frame_index = 0
fly_surf = fly_frames[fly_frame_index]

obstacle_rect_list = []


player_walk_1 = pygame.image.load('graphics/player/player_walk_1.png').convert_alpha()
player_walk_2 = pygame.image.load('graphics/player/player_walk_2.png').convert_alpha()
player_walk = [player_walk_1, player_walk_2]
player_index = 0
player_jump = pygame.image.load('graphics/player/jump.png').convert_alpha()

player_surf = player_walk[player_index]
player_rect = player_surf.get_rect(midbottom = (80, 300))
player_gravity = 0


# Intro screen
player_stand = pygame.image.load('graphics/player/player_stand.png').convert_alpha()
player_stand = pygame.transform.scale2x(player_stand)   # Agrandar el player 
player_stand_rect = player_stand.get_rect(center = (400, 200))

game_name = test_font.render('Pixel Runner', False, '#74D1B9')
game_name_rect = game_name.get_rect(center = (400, 80))

game_message = test_font.render('Press space to run', False, '#74D1B9')
game_message_rect = game_message.get_rect(center = (400, 340))

# Timer
obstacle_timer = pygame.USEREVENT + 1
pygame.time.set_timer(obstacle_timer, 1500)

snail_animation_timer = pygame.USEREVENT + 2
pygame.time.set_timer(snail_animation_timer, 500)

fly_animation_timer = pygame.USEREVENT + 3
pygame.time.set_timer(fly_animation_timer, 200)


while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            exit()
        
        if game_active:    
            if event.type == pygame.MOUSEBUTTONDOWN:
                if player_rect.collidepoint(event.pos) and player_rect.bottom >= 300:
                    player_gravity = -20
                
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_SPACE and player_rect.bottom >= 300:
                    player_gravity = -20
        else:
            if event.type == pygame.KEYDOWN and event.key == pygame.K_SPACE:
                game_active = True
                start_time = int(pygame.time.get_ticks() / 1000)
            
        if game_active:        
            if event.type == obstacle_timer:
                obstacle_group.add(Obstacle(choice(['fly', 'snail', 'snail', 'snail'])))
                # if randint(0, 2):
                #     obstacle_rect_list.append(snail_surf.get_rect(bottomright = (randint(900, 1100), 300)))
                # else:
                #     obstacle_rect_list.append(fly_surf.get_rect(bottomright = (randint(900, 1100), 210)))
                    
            if event.type == snail_animation_timer:
                if snail_frame_index == 0: snail_frame_index = 1
                else: snail_frame_index = 0
                snail_surf = snail_frames[snail_frame_index]
                
            if event.type == fly_animation_timer:
                if fly_frame_index == 0: fly_frame_index = 1
                else: fly_frame_index = 0
                fly_surf = fly_frames[fly_frame_index]
            
            
    if game_active:
        screen.blit(sky_surface, (0, 0))
        screen.blit(ground_surface, (0, 300))
        # pygame.draw.rect(screen, '#c0e8ec', score_rect)
        # screen.blit(score_surf, score_rect)
        score = display_score()
        
        # snail_rect.x -= 5
        # if snail_rect.right <= 0: snail_rect.left = 800
        # screen.blit(snail_surf, snail_rect)
        
        # Player
        # player_gravity += 1
        # player_rect.y += player_gravity
        # if player_rect.bottom >= 300: player_rect.bottom = 300
        # player_animation()
        # screen.blit(player_surf, player_rect)
        player.draw(screen)
        player.update()
        
        obstacle_group.draw(screen)
        obstacle_group.update()
        
        # Obstacle movement
        # obstacle_rect_list = obstacle_movement(obstacle_rect_list)
        
        # Collision
        game_active = collision_sprite()
        # game_active = collisions(player_rect, obstacle_rect_list)
        
    else:
        screen.fill('#333333')
        screen.blit(player_stand, player_stand_rect)
        obstacle_rect_list.clear()
        player_rect.midbottom = (80, 300)
        player_gravity = 0
        
        score_message = test_font.render(f'Your score: {score}', False, '#74D1B9')
        score_message_rect = score_message.get_rect(center = (400, 330))
        screen.blit(game_name, game_name_rect)
        
        if score == 0: screen.blit(game_message, game_message_rect)
        else: screen.blit(score_message, score_message_rect)
    
    
    pygame.display.update()
    clock.tick(60)