You have to clear the display in every frame with pygame.Surface.fill: while True: # […] screen.fill(0) # <— main.draw_elements() main.move_ball() main.ball.x_pos += main.ball.speed pygame.display.flip() # […] Everything that is drawn is drawn on the target surface. The entire scene is redraw in each frame. Therefore the display needs to be cleared at the begin of … Read more
The shape attribute of a numpy.array is the number of elements in each dimension. The first element is the height, the second the width and the third the number of channels. A pygame.Surface can be generated by pygame.image.frombuffer. The 1st argument can be a numpy.array and the 2nd argument is the format (RGB or RGBA). … Read more
If the background has a uniform color, then you can set the transparent colorkey by pygame.Surface.set_colorkey. For instance if the background is the white (255, 255, 255): image = pygame.image.load(‘./car1.bmp’).convert() image.set_colorkey((255, 255, 255)) Anyway that won’t solve the issue if the background has multiple colors. I recommend to use an image format which supports per … Read more
You missed to update the size of self.pixeltitlerect after the Surface has been scaled: self.pixeltitle = pg.transform.scale(self.pixeltitle,(xsize,ysize)) # size of surface has been changed get the new rectangle self.pixeltitlerect = self.pixeltitle.get_rect() self.pixeltitlerect.center = (250,120) self.screen.blit(self.pixeltitle,self.pixeltitlerect) Or even shorter (see pygame.Surface.get_rect()): self.pixeltitle = pg.transform.scale(self.pixeltitle,(xsize,ysize)) self.pixeltitlerect = self.pixeltitle.get_rect(center = (250,120)) self.screen.blit(self.pixeltitle,self.pixeltitlerect) Do not scale the original Surface. … Read more
This is a complete example which combines hints by other people here. It should render a file called test.svg from the current directory. It was tested on Ubuntu 10.10, python-cairo 1.8.8, python-pygame 1.9.1, python-rsvg 2.30.0. #!/usr/bin/python import array import math import cairo import pygame import rsvg WIDTH = 512 HEIGHT = 512 data = array.array(‘c’, … Read more
You can use pygame’s Vector2 class instead of calculating the position of your sprite yourself. I also suggest to let the sprite itself handle its movement instead of doing so in the main loop and using a clock for constant framerates and easy control of the speed of your sprites. You also probably want to … Read more
The issue is the image format. JPEG images have no alpha channel. You can set a transparent colorkey by set_colorkey(), but the result will not satisfy you, because the JPEG is not lossless. That means due the compression, the colors will slightly change and the color key will not work correctly. For instance white color: … Read more
If you copy a transparent Surface to another Surface the target Surface has to provide transparency respectively per pixel alpha. You can enable additional functions when creating a new surface. Set the SRCALPHA flag to create a surface with an image format that includes a per-pixel alpha. The initial value of the pixels is (0, … Read more
pygame.Surface.get_rect.get_rect() returns a rectangle with the size of the Surface object. This function does not consider the drawing area in the image. You can find the bounding rectangle of the painted area in the surface, with pygame.Surface.get_bounding_rect: bounding_rect = image.get_bounding_rect() bounding_rect.move_ip(target_rect.topleft) See the example. The black rectangle is the Surface rectangle and the red rectangle … Read more
The game is running slow because you load the START_Image in every frame. pygame.image.load is a very expensive operation, because it has to read the images from the data store. Load START_Image once at startup surface = pygame.display.set_mode((width,height)) clock = pygame.time.Clock()#for fps #caption pygame.display.set_caption(‘Survival Island’) START_Image = pygame.image.load(‘START_Image.png’).convert() Do not call pygame.display.update() more than once … Read more