I'm trying to create the Breakout game with python's turtle module, but for something I haven't yet identified I can't center the image correctly! from turtle import Turtle class Game(): def __init__(self): self.t = Turtle() self.t.screen.title('Object-oriented turtle demo') self.t.screen.bgcolor("black") self.t.screen.setup(width=1000, height=900, startx=None, starty=None) self.t.hideturtle() self.t.penup() self.t.goto(0, 0) self.t.dot(10, "white") # ponto branco no centro da tela self.blocks = [] self.t.screen.tracer(0) print(self.t.screen.window_width()) def draw_block(self, x, y, width, height, colour): self.t.penup() self.t.goto(x, y) self.t.setheading(0) self.t.pendown() self.t.fillcolor(colour) self.t.begin_fill() for _ in range(2): self.t.forward(width) self.t.right(90) self.t.forward(height) self.t.right(90) self.t.end_fill() def draw_board(self): colours = ["red", "orangered", "dark orange", "orange", "yellow", "yellow green", "green", "turquoise", "blue", "dark blue"] block_width = 80 block_height = 30 block_spacing_x = 10 # Espaçamento entre blocos block_spacing_y = 40 num_columns = 11 num_rows = 10 window_width = self.t.screen.window_width() total_width_blocks = num_columns * block_width total_spacing = (num_columns - 1) * block_spacing_x total_grid_width = total_width_blocks + total_spacing # Calcula o ponto inicial para centralizar a grade start_x = -total_grid_width / 2 window_height = self.t.screen.window_height() start_y = (window_height / 2) - block_height - 20 # leve margem do topo for row in range(num_rows): for column in range(num_columns): x = start_x + column * (block_width + block_spacing_x) y = start_y - row * block_spacing_y self.draw_block(x, y, width=block_width, height=block_height, colour=colours[row]) self.blocks.append({ "x": x, "y": y, "width": block_width, "height": block_height, "color": colours[row], "active": True }) print("Hello") self.draw_vertical_line() self.draw_horizontal_line()# Chama a função para desenhar a linha self.t.screen.update() #self.t.screen.mainloop() def draw_vertical_line(self): self.t.pencolor("white") self.t.penup() altura_janela = self.t.screen.window_height() # Desenha a linha da direita self.t.goto(self.t.screen.window_width() / 2, altura_janela / 2) # Topo da direita self.t.setheading(270) # Aponta para baixo self.t.pendown() self.t.forward(altura_janela) # Desenha a linha da esquerda (com um pequeno ajuste de +3 como tinha) self.t.penup() self.t.goto(-self.t.screen.window_width() / 2, altura_janela / 2) # Topo da esquerda self.t.setheading(270) # Aponta para baixo self.t.pendown() self.t.forward(altura_janela) def draw_horizontal_line(self): self.t.pencolor("white") self.t.penup() largura_janela = self.t.screen.window_width() margem = 20 # Margem dos lados comprimento_linha = largura_janela - 2 * margem centro_linha = 0 # O centro horizontal da janela é 0 start_x = centro_linha - comprimento_linha / 2 self.t.goto(start_x, 0) self.t.setheading(0) self.t.pendown() self.t.forward(comprimento_linha) # Executar turtle = Game() turtle.draw_board() #turtle.draw_vertical_line() print(turtle.blocks[-1]) print(turtle.blocks[-1]["x"] + turtle.blocks[-1]["width"]) print(turtle.t.screen.window_width() / 2) last_block = turtle.blocks[-1] right_edge = last_block["x"] + last_block["width"] half_screen = turtle.t.screen.window_width() / 2 print("\n--- Validação ---") print(f"Último bloco termina em: {right_edge}") print(f"Metade da tela: {half_screen}") print(f"Diferença: {abs(right_edge - half_screen)}") turtle.t.screen.mainloop() enter image description here I've tried drawing vertical lines in -window_width/ 2 and in window_width/2, but the latter doesn't appear. I can only see it by dragging the window sideways with the mouse! Why is that? Continue reading...
