All of theseįunctions can also accept a simple tuple of 4 elements (left, top, width, Represent the positions of our objects with the Rects.Īlso know that many functions in pygame expect Rect arguments. Methods which help you move and position them. The Rect basically represents a rectangular area in these coordinates. Pygame comes with a convenient container for these coordinates, it is a Where the topleft corner of the source should be placed on the destination. When blitting, the position argument represents Moving to the right a little would be (10, 0), and then moving down justĪs much would be (10, 10). The top-left corner of a Surface is coordinate (0,Ġ). This represents the number of pixels to the right, and the number of pixelsĭown to place the image. In pygame we always pass positions as an (X,Y) coordinate. To position an object on the screen, we need to tell the blit() function First thing we'll want to do is find a cleaner way to represent
#IMAGE CLEANER ONLY CLEANS 1 PIC AT A TIME CODE#
So where do we go from here? Well for one the code is stillĪ little awkward. Then we've properly moved that hero one space
#IMAGE CLEANER ONLY CLEANS 1 PIC AT A TIME HOW TO#
With this code we've shown how to display a simple background blit ( playerimage, ( playerpos * 10, 0 )) blit ( background, ( playerpos * 10, 0 )) > playerpos = playerpos - 1 > screen. Anotherīig change, instead of using positions as a single index (0 through 5), we We assigned numbers to a list, we now blit graphics to the screen. Graphics and named them "terrain1", "terrain2", and "hero". To take the code we see in the above to examples and make them work with Handle things like transparency and other special effects. Straight copying of memory, since it needs to handle things like pixelįormats, clipping, and scanline pitches. Other graphics libraries will use the word bitblt, or just blt,īut they are talking about the same thing. Much like setting values in our screen-listĪbove, blitting assigns the color of pixels in our image. A more formal definition is to copy an array of data Work, you are probably unfamiliar with this common term.īLIT: Basically, blit means to copy graphics from one image In the next sections we will transform our program from using lists to But withĪ couple small changes, we'll make this work directly with graphics on > screen = background > playerpos = playerpos - 1 > screen = 8 > print screen Įxcellent! This isn't exactly what you'd call smooth animation. So let's begin by creating our screen list and fill it with a beautiful It might actually be surprising howĬlosely this represents exactly what we'll later be doing with real graphics. We're going to createĪ small python list of 6 numbers, and imagine it represents some fantastic
You? Well good news, for the next few sections we are going to use code thatĭoes everything we want, it just doesn't use pixels. Perhaps the concept of pixels and images is still a little foreign to Totally lost? Well hopefully the rest of this tutorial can straighten things "erase" the image before drawing it in a new position? Perhaps you're still Even explaining the best ways to have multiple images movingĪround the screen. Through the rest of this tutorial we will break this process down into By rapidly erasing the imageĪnd redrawing it in a new place, we achieve the "illusion" of movement. Will be visible in two places on the screen. The new position, we'll need to "erase" the old one. When theyĪre blitted to the screen they are copied into the display, but you still Pygame, but they are in no way connected to the display Surface. These images you blit to the screen are also Surfaces in Pixels aren't added or moved, we just change the colors of the pixels already Screen, you are simply changing the color of the pixels on the screen. These pixels is by calling the blit() function. On the screen, and the image is made up of pixels. This is basically an image that is visible Just introduce you to some of the basics with pygame. Note that we won't be teaching you to program with python in this article, Try to end with methods of keeping your animations efficient. To be stuck here, I'll do my best to take things step by step. Without understandingĪll the concepts, it can be very confusing. Out how to make an image move around the screen. Many people new to programming and graphics have a hard time figuring
0 kommentar(er)
