spaceship | Demo application for DevConf | Learning library
kandi X-RAY | spaceship Summary
kandi X-RAY | spaceship Summary
Demo application for DevConf 2013.
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spaceship Examples and Code Snippets
Community Discussions
Trending Discussions on spaceship
QUESTION
This is my code. It is a program that fires bullets until there aren't any left.
...ANSWER
Answered 2021-Jun-07 at 09:29Plese provide more context. But here is a hint
QUESTION
I can't animate spaceship.png nor update the image to animate it.
Need to animate it using paint method (could animate it using ImageIcons and labels) in order to rotate.
So, rewritten it but now i can't even update its' current position.
- How can i make animation with a key listener ?
- Why can't i animate the image that's being painted?
ANSWER
Answered 2021-Jun-06 at 03:53The problem with the JPanel you created is that it is not focusable, i.e it does not register key events, it can be fixed with a simple line of code setFocusable(true), and I noticed that you update the frame only once the space ship moves, but it is always a good practice to update it once every 60'th of a second, or any frames per second, you can do this by implementing ActionListenerand passing the class to a Timer.
and I changed the keys to their respective variable(VK_W and VK_S)
Here is the updated code
QUESTION
from tkinter import *
from time import sleep
import random
class Ball:
def __init__(self, canvas, color, size, x, y, xspeed, yspeed):
self.canvas = canvas
self.color = color
self.size = size
self.x = x
self.y = y
self.xspeed = xspeed
self.yspeed = yspeed
self.id=canvas.create_oval(x,y,x+size,y+size,fill=color)
def move(self):
self.canvas.move(self.id, self.xspeed, self.yspeed)
(x1, y1, x2, y2)=self.canvas.coords(self.id)
(self.x, self.y)=(x1, y1)
if x1<=0 or x2>=WIDTH:
self.xspeed=-self.xspeed
if y1<=0 or y2>=HEIGHT:
self.yspeed=-self.yspeed
WIDTH=800
HEIGHT=400
bullets=[]
def fire(event):
bullets.append(Ball(canvas, 10, "red", 100, 200, 10, 0))
window = Tk()
canvas = Canvas(window, width=WIDTH, height=HEIGHT)
canvas.pack()
canvas.bind("", fire)
spaceship = Ball(canvas, "green", 100, 100, 200, 0, 0)
enemy = Ball(canvas, "red", 100, 500, 200, 0, 5)
while True:
for bullet in bullets:
bullet.move()
if (bullet.x+bullet.size) >= WIDTH:
canvas.delete(bullet.id)
bullets.remove(bullet)
enemy.move()
window.update()
sleep(0.03)
ANSWER
Answered 2021-Jun-06 at 03:54The definition of the Ball is
QUESTION
Does the new C++20 spaceship operator allow a concise way of expressing short-circuited multiple-criteria comparison? Something better than this:
...ANSWER
Answered 2021-May-18 at 04:51The usual tie-and-compare approach works with spaceship too:
QUESTION
I'm trying to learn the design pattern norme (like refacturing guru), and i have some problem to understand how i could merge the idea of bad design with public getter/setter and factory/Builder that need "out of constructor" variable setter.
for example with the answer of this article to article to Design pattern
As you can understand, each object will need a lot of informations, and adding part should set the needed informations, but to be able to do it, it need accessor to my variable outside the constructor.
Help me figure out what i'm missing.
--- Edit To be more precise, Let's say i have 2 class : CombatObject <---- Spaceships And i have a factory that will create different type of spaceships (principally because i don't want to create more than 10 class just to change the stats of the objects)
in this case, getter/setter are not a bad design (or are they?)
...ANSWER
Answered 2021-May-14 at 17:49Ok i think the comments are right, the way i see the solution is the following :
No Setter, the only way to interact with the object will be with function with a purpose. For exemple, modify HP, add a DoDamage function that will return false if the ship is destoyed and will internally modify the hp (and maybe the damage too, etc..)
Getter can be public, but of course, only "const &"
Clone method is a good idea for future development (prototype pattern)
QUESTION
I have an issue where i need to call some variables in more than one function and can not get them to declare in the game_loop() function. The variables are called outside of the game_loop function but the variables are also being called into other functions. How can I get the variables to call in the game_loop function and all other functions that call them as well?
Please see code below:
...ANSWER
Answered 2021-May-08 at 02:50If what you need is to be able to use a global variable in a function all you need is the keyword global.
QUESTION
import pygame
import sys
from pygame import *
WINDOW_SIZE = (900, 700)
screen = pygame.display.set_mode(WINDOW_SIZE, 0, 32)
pygame.display.set_caption('Pygame Program')
pygame.display.set_icon(pygame.image.load('spaceship (3).png'))
player_img = pygame.image.load('ClipartKey_738895_adobespark.png')
player_X = 130
player_Y = 600
moving_right=False
moving_left=False
if moving_right:
player_X+=0.3
if moving_left:
player_X-=0.3
def player():
screen.blit(player_img, (player_X, player_Y))
running = True
while running:
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
sys.exit()
if event.type==KEYDOWN:
if event.key==K_RIGHT:
moving_right=True
if event.key==K_LEFT:
moving_left=True
if event.type==KEYUP:
if event.key==K_RIGHT:
moving_right=False
if event.key==K_LEFT:
moving_left=False
screen.fill((0, 200, 255))
player()
if player_X<=2:
player_X+=3
pygame.display.update()
ANSWER
Answered 2021-Apr-26 at 08:10Simply change the line
QUESTION
I am learning java script at the moment and don't know the problem. The spaceship is not moving and there is no error? When I press w on my keyboard, it doesn't do anything. I think the problem is by "document.onekeydown =function(e) {" but I don't know what the problem is.
ANSWER
Answered 2021-Apr-19 at 20:24At first, the method onekeydown() seems not to exist, you probably mean onkeydown()?
Second, you only check the key input every second, this is not robust as you might miss inputs or produce input lags. Thus, you should consider to change the spaceship's value directly in the onkeydown() and onkeyup() methods.
QUESTION
In Azure DevOps, we have a Release pipeline to push our iOS app's .ipa to Testflight, using the following extension plugin: https://github.com/microsoft/app-store-vsts-extension
Apple enforced the use of the App Store Connect API key recently.
Since implementation of the App Store Connect API key, we are now faced with a timeout error (logs as follows):
...ANSWER
Answered 2021-Apr-19 at 21:26I was missing the App Manager role on the API key as suggested by Paulw11.
After regenerating a new API key with this role, it worked.
Note: App Manager role on the user account is not sufficient and it will not work if you are automating the release part (changelogs, release notes etc.)
QUESTION
I am making a spaceship game where you control a spaceship and fire bullets to destroy enemy spaceships. When you click the try again button when you lose, you should be able to both replay and close the game. However, even though I was able to play multiply times, I wasn't able to close the window. I think this has something to do with the if statement that checks if the try again button is clicked. Or maybe it has something to do with something else. How can I fix it so I can close the window at all times?
This is my current code:
...ANSWER
Answered 2021-Apr-13 at 15:51You can't do it like that. Never run the main application loop recursively. The issue is
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