blit | : space_invader : Blitting library for 2D sprites | Game Engine library

In my pygame-code, I have a drone that is supposed to follow a flight path.

I used pygame.draw.lines to draw lines between specified points. Now, I have a flight path with 10 points where after each point the path angle changes (a bit like a zigzag). The player can move the drone by pressing the keys.

My goal is to print a warning once the drone deviates from the path, e.g. by +/-30. I have been racking my brain for two days but can't come up with a condition to detect a deviation. I just can't figure out how to approach this.

I can determine the drone's x-coordinate at any time but how do I determine the offset from the path? I have attached an image to visualize my problem.

Edit: As I am a beginner my code is a mess but when copy-pasting it, I guess only the lines 35-91 are interesting. Thank you for any kind of advice in advance!!

So I am trying to remove the trail from player while it moves. I tried to do screen.fill, but when I do it, then the whole map disappears. I want to achieve a simple moving ascii letter. - tiles(map1) is supposed to draw the map, however if I put screen.fill before it, then the map will disappear i have no idea why.

The continuation of my previous question, I am able to find a way to capture a live screen without own window with help of WinRT's Windows.Graphics.Capture. I can concentrate directly on a particular window handle to get live capture. now, the problem with this approach is I am not able to apply pixel shader. The question Applying HLSL Pixel Shaders to Win32 Screen Capture having the same requirement but the answer to that question is not solving my problem.

Code with more information:

I was following a tutorial with tech with time and at the end of part 4 every thing was working, part 5 just explains neat then there was implementation of neat in part 6 and by the time we tested the code again half way through part 7 (the last part) it was not working properly but no error codes.

I have tried moving the pygame.display.update() to different locations and it does not seem to help.

I have tried changing the draw order so that the birds are drawn first and then the pipes and it did not seem to help.

I am trying to move a rectangle over the waves,trying to simulate a boat sailing. For that, I rotate the rectangle using the height of the drawn lines and calculating the angle they form with the rectangle. However, for some reason, in some points of the waves the rectangle is flickering. The code shows the problem.

I tried to make a simple line sorting algorithm by height in Python using pygame.

The idea was simple. Generate 100 instances of objects with height attributes of a random value from a class into a list and then draw them onto the display. After clicking the right keyboard arrow, use the sort function to sort objects in the list by height attribute and redraw them again.

For some reason, it always keeps drawing the unsorted/list version of the list. So either it doesn't sort the objects by attribute well or I made a mistake somewhere else.

Can anyone help me find the problem?

I am attempting to switch the background only if a certain number of collisions (or hits on the balloons) is detected. The collisions are between a gun and 7 balloons blitted on the screen.

Note: The collision works perfectly fine.

Currently, 7 balloons show up and each time I hit a balloon it switches backgrounds. What should happen is when you hit 1 balloon out of 7 on the first background, it changes to the second background where you hit 1 balloon again out of the 7 displayed. When you hit a balloon on the second background, it changes back to the first. Then (back on the first background) you hit 2 balloons (out of 7), where it then changes to the second background where you hit 2 balloons again, and so on. So the number of hits should be like 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7; (out of 7 total displayed balloons) where the first number in each pair is the number of hits in the first background and the second is the new background.

This is what changes the background:

The couple other questions related to this were solved by moving a draw event out of a loop it shouldn't be in. I don't have this issue though. Any help would be greatly appreciated!

Python: 3.8

Pygame: 1.9.6

If you need to test play:

Run the game. Draw on the screen to place live cells. Click 'R' to start. You can also click 'S' after starting to stop and draw again, but you'll have to wait a few generations after clicking before it actually stops (due to the same lag I assume).

I created an animated plot using FuncAnimation from the Matplotlib Animation class, and I want to save it as a .gif file. When I run the script, the output looks normal, and looks like this (the animation works fine):

However, when I try to save the animated plot as a .gif file using ImageMagick or PillowWriter, the plot looks like the following graph:

The lines are clearly much thicker, and in general, just looks very bad. The problem is attributed to the points (the purple, and red circles). Thus it seems like the plot is writing over each frame (which I think is the case). I can avoid this by just getting rid of them all together. But I don't want to do that as it would be hard to see the lines.

Here is the code: