CODEWITHSUNDEEP
pythonpygame
omneer
omneer

Reputation: 93

How to draw multiple sprites in one class

I am making a space shooter game which has a planets in the background. I've decided to draw some planets in the background and when i move to the right the planets should move to the left. That is for the player to feel the spaceship is moving around the space. However i could have done it for one planet only. When try to apply the other planets in one class it is constantly changing to the other planet.

lanetdic = {'planets':[]}
imagestoload = ['Feza/graphs/sprites/saturne.png']
for i in imagestoload:
    img = pg.image.load(i).convert_alpha()
    planetdic['planets'].append(img)

this is to load the sprite. and in the below i created a class for the planets.

class Planets(pg.sprite.Group):
    def __init__(self):
        pg.sprite.Group.__init__(self)
        self.frame = 0
        self.image = planetdic['planets'][self.frame]
        self.rect = self.image.get_rect()
        self.rect.center = (500+100*self.frame,HEIGHT/2)
        self.pos = vec(500,HEIGHT/2)
        self.vel = vec(0,0)
        self.acc = vec(0,0)
    def update(self):
        #self.acc = vec(0,0)
        self.frame = (self.frame + 1)%len(planetdic['planets'])

Maybe it is not sensible to create a class for a planet but i couldnt have find anotherway if there is please tell me.

if we get to the point again. In the below i made a for loop to load images. and used again the same for loop

planetdic = {'planets':[]}
    imagestoload = ['Feza/graphs/sprites/saturne.png','Feza/graphs/sprites/jupiter.png','Feza/graphs/sprites/venus.png','Feza/graphs/sprites/uranus.png','Feza/graphs/sprites/neptune.png']
    for i in imagestoload:
        img = pg.image.load(i).convert_alpha()
        planetdic['planets'].append(img)

When i apply multi images it changes one to other in miliseconds how can i prevent this happen. I just want to show every planets in the background and make them move.

Upvotes: 1

Views: 485

Answers (1)

Rabbid76
Rabbid76

Reputation: 210909

How to draw multiple sprites in one class

You do not do that. However, you can create multiple instance objects of a class.

The image (Surface) must be a parameter of the constructor of the class Planet. The Planet class is a subcalss of sprite.Sprite, not sprite.Group:

class Planet(pg.sprite.Sprite):
    def __init__(self, image):
        pg.sprite.Group.__init__(self)
        self.frame = 0
        self.image = image
        self.rect = self.image.get_rect()
        self.rect.center = (500+100*self.frame,HEIGHT/2)
        self.pos = vec(500,HEIGHT/2)
        self.vel = vec(0,0)
        self.acc = vec(0,0)

Create a new instance object of the Planet class for each planet:

planets = pg.sprite.Group()
imagestoload = ['Feza/graphs/sprites/saturne.png','Feza/graphs/sprites/jupiter.png','Feza/graphs/sprites/venus.png','Feza/graphs/sprites/uranus.png','Feza/graphs/sprites/neptune.png']
for filepath in imagestoload:
    img = pg.image.load(filepath).convert_alpha()
    planet = Planet(img)
    planets.add(planet)

Upvotes: 1

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