main.py

import pygame
import random
import math
import os.path
from pygame import mixer
from sprites import *
from settings import *
from tylemap import *


# music: Licensed CC-BY. Attribute to Avgvst.
# https://opengameart.org/content/generic-8-bit-jrpg-soundtrack

class Game:
    def __init__(self):
        # initialize game window, etc
        pygame.init()
        pygame.mixer.init()
        self.screen = pygame.display.set_mode(((width, height)))

        # Title and Icon
        pygame.display.set_caption(title)
        icon = pygame.image.load('img/icon.png')
        pygame.display.set_icon(icon)
        self.font_name = pygame.font.match_font(basic_font)

        self.clock = pygame.time.Clock()
        self.running = True
        self.load_data()

    def load_data(self):
        self.spritesheet1 = SpriteSheet(os.path.join(img_folder, spritesheet1))
        self.spritesheet2 = SpriteSheet(os.path.join(img_folder, spritesheet2))
        # load jump sound
        self.jump_sound = pygame.mixer.Sound(os.path.join(sound_folder, 'Jump13.wav'))
        # load map
        self.map = Map(os.path.join(game_folder, 'map2.txt'))

    def new(self):
        # starts a new game not a new program
        self.score = 0
        self.all_sprites = pygame.sprite.Group()
        self.platforms = pygame.sprite.Group()
        self.tile = pygame.sprite.Group()

        # spawn walls from map
        for row, tiles in enumerate(self.map.data):
            for col, tile in enumerate(tiles):
                if tile == '1':
                    Tile(self, col, row)
                if tile == 'P':
                    self.player = Player(self, col, row)  # spawns player at 'P' map location
        self.all_sprites.add(self.player)
        self.camera = Camera(self.map.width, self.map.height)
        pygame.mixer.music.load(os.path.join(sound_folder, '04 - Sanctuary.ogg'))
        self.run()

    def run(self):
        # Game loop
        pygame.mixer.music.play(loops=-1)
        self.playing = True
        while self.playing:
            self.dt = self.clock.tick(fps) / 1000
            self.events()
            self.update()
            self.draw()
        pygame.mixer.music.fadeout(1000)

    def update(self):
        # Game loop - Update
        self.all_sprites.update()
        self.camera.update(self.player)

        hits = pygame.sprite.spritecollide(self.player, self.tile, False)
        if hits:
            lowest = max(hits, key=lambda x: x.rect.bottom)
            highest = min(hits, key=lambda x: x.rect.bottom)
            if self.player.y < lowest.y + 0.5:  # if falling on block - player remains on top of it
                self.player.y = lowest.y - 1.3
                self.player.vel.y = 0
                self.player.jumping = False
            # collision when the player hits the block from below
            if self.player.y > lowest.y - 0.5:
                self.player.y = lowest.y + 1
                self.player.vel.y = 0
        # hitting blocks from the side
        for hit in range(0, len(hits)):
            if self.player.y > hits[hit].y:
                if self.player.x < hits[hit].x:
                    self.player.x = hits[hit].x - 1
                    self.player.vel.x = 0
                if self.player.x > hits[hit].x:
                    self.player.x = hits[hit].x + 1
                    self.player.vel.x = 0

        # Die, by falling of the screen
        if self.player.rect.bottom > height + 60:
            self.playing = False

    def events(self):
        # Game loop - events
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                if self.playing:
                    self.playing = False
                self.running = False
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_UP:
                    self.player.jump()
            if event.type == pygame.KEYUP:
                if event.key == pygame.K_UP:
                    self.player.jump_cut()

    def draw_grid(self):
        for x in range(0, width, tilesize):
            pygame.draw.line(self.screen, (169, 169, 169), (x, 0), (x, height))
        for y in range(0, height, tilesize):
            pygame.draw.line(self.screen, (169, 169, 169), (0, y), (width, y))

    def draw(self):
        # Game loop - draw/render
        self.screen.fill((146, 244, 255))
        self.draw_grid()
        for sprite in self.all_sprites:
            self.screen.blit(sprite.image, self.camera.apply(sprite))
        self.draw_text("Score: " + str(self.score), 26, (255, 255, 255), 40, 15)

        # after everything is drawn "flip the board"
        pygame.display.flip()

    def show_start_screen(self):
        # game start screen
        pygame.mixer.music.load(os.path.join(sound_folder, '01 - Opening.ogg'))
        pygame.mixer.music.play(loops=-1)
        self.screen.fill((209, 206, 29))
        self.draw_text(title, 48, (255, 255, 255), width // 2, height // 4 + 50)
        self.draw_text("Arrows to move, Z to shoot", 22, (255, 255, 255), width // 2, height // 2)
        self.draw_text("Press a key to play", 22, (255, 255, 255), width // 2, height // 2 + 40)
        pygame.display.flip()
        self.wait_for_key()
        pygame.mixer.music.fadeout(1000)

    def show_go_screen(self):
        # game over screen
        pygame.mixer.music.load(os.path.join(sound_folder, '20 - Game Over.ogg'))
        pygame.mixer.music.play(loops=-1)
        if not self.running:
            return
        self.screen.fill(BG_colour)
        self.draw_text("GAME OVER", 48, (255, 255, 255), width // 2, height // 4 + 50)
        self.draw_text("Final Score: " + str(self.score), 22, (255, 255, 255), width / 2, height // 2)
        self.draw_text("Press a key to play again", 22, (255, 255, 255), width // 2, height // 2 + 40)
        pygame.display.flip()
        self.wait_for_key()
        pygame.mixer.music.fadeout(1000)

    def wait_for_key(self):
        waiting = True
        while waiting:
            self.clock.tick(fps)
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    waiting = False
                    self.running = False
                if event.type == pygame.KEYUP:
                    waiting = False

    def draw_text(self, text, size, color, x, y):
        font = pygame.font.Font(self.font_name, size)
        text_surface = font.render(text, True, color)
        text_rect = text_surface.get_rect()
        text_rect.center = (x, y)
        self.screen.blit(text_surface, text_rect)


g = Game()
g.show_start_screen()
while g.running:
    g.new()
    g.show_go_screen()  # go stands for Game Over

pygame.quit()