[英]Undefined Method (NoMethodError) ruby and Gosu
I'm having a problem calling the x position and y position of a Player.我在调用玩家的 x 位置和 y 位置时遇到问题。 When I call the origin_object.x and origin_object.y with the class Projectile it gives me this error:
当我使用类 Projectile 调用 origin_object.x 和 origin_object.y 时,它给了我这个错误:
asteroids.rb:35:in `update': undefined method `x' for #<Player:0x007fa7c307c520> (NoMethodError)
from /usr/local/lib/ruby/gems/2.2.0/gems/gosu-0.10.4/lib/gosu/patches.rb:135:in `tick'
from /usr/local/lib/ruby/gems/2.2.0/gems/gosu-0.10.4/lib/gosu/patches.rb:135:in `tick'
from asteroids.rb:68:in `<main>'
This is my code:这是我的代码:
class Player
attr_accessor :x, :y, :angle, :lives, :score
def initialize
@image = Gosu::Image.new("assets/nave1.png")
@x = @y = @vel_x = @vel_y = @angle = 0.0
@score = 0 #Puntaje
@lives = 5 #Vida
end
end
this is the projectile file这是弹丸文件
class Projectile
attr_reader :x, :y, :angle
def initialize(origin_object)
@alive = true
@x, @y = origin_object.x, origin_object.y
@angle = origin_object.angle
@speed_modifier = 7
@image = Gosu::Image.new('assets/projectile.png')
@distance_traveled, @max_distance = 0, 50
end
end
this is the main file (which I use to run the project)这是主文件(我用来运行项目)
require 'gosu'
require './lib/Player.rb'
require './lib/Projectile.rb'
class GameWindow < Gosu::Window
def initialize
super(1000, 700, false) #Creacion Pantalla
self.caption = "Asteroids Redes" #Titulo Pantalla
@font = Gosu::Font.new(self, "assets/victor-pixel.ttf", 34)
end
def setup_game
@player = Player.new
@player.warp(650, 350)
@game_in_progress = true
@projectiles = []
end
#--------------------------------------#
def update
if Gosu::button_down? Gosu::KbQ #Salir con tecla Q
close
end
if button_down? Gosu:: KbP
setup_game unless @game_in_progress
end
if @player #si existe jugador permite moverlo
if Gosu::button_down? Gosu::KbSpace
p @player.x
#@projectiles << Projectile.new(p @player)
end
if Gosu::button_down? Gosu::KbLeft or Gosu::button_down? Gosu::GpLeft then
@player.turn_left
end
if Gosu::button_down? Gosu::KbRight or Gosu::button_down? Gosu::GpRight then
@player.turn_right
end
if Gosu::button_down? Gosu::KbUp or Gosu::button_down? Gosu::GpButton0 then
@player.accelerate
end
@player.move
@projectiles.each {|projectile| projectile.move}
end
end
#--------------------------------------#
def draw
unless @game_in_progress #Si el no se esta ejecutando muestra el menu
@font.draw("ASTEROIDS", 260, 220, 50, 3, 3, Gosu::Color::rgb(255, 255, 255))
@font.draw("Presiona 'p' Para Jugar", 300, 320, 50, 1, 1, Gosu::Color::rgb(13, 123, 255))
@font.draw("Presiona 'q' Para Salir", 305, 345, 50, 1, 1, Gosu::Color::rgb(13, 123, 255))
end
if @player #Si existe jugador lo dibuja
@player.draw
@projectiles.each {|projectile| projectile.draw}
end
end
#--------------------------------------#
end
#........................................#
window = GameWindow.new
window.show
I have copied the code from your three files, added empty method stubs for move
, draw
, accelerate
, turn_left
/ turn_right
so that the code will not immediately crash.我从三个文件复制的代码,添加空的方法存根
move
, draw
, accelerate
, turn_left
/ turn_right
,这样的代码不会立即崩溃。
When I start the game and press P, then space, I see "0.0" in the terminal as the result of p @player.x
.当我开始游戏并按 P,然后按空格时,我在终端中看到“0.0”作为
p @player.x
的结果。
Are you maybe running another version of the code than what you have included in your question?您是否可能正在运行与您的问题中包含的代码不同的其他版本的代码?
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