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Apologies up front if this question is badly asked or if I'm doing something very obviously idiotic...

My Unity project is dynamically dropping Rule Tiles onto a tilemap grid, using code similar to the below:

Tkinter ignores root.after The countdown animation plays but it ignores the delay and does everything that's after root.after before the countdown is over

All tests suggest that the countdown is happening and the variable is changing, it just skips the delay

As a school project, I've made the classic snake game using SDL2 and C++. I've already implemented the growing, moving features for the Snake but it was required to make the movement based on a grid, but when I implemented the grid feature, the self-collision was always triggering whenever grow one part, so every time I start the game, and eat the first fruit, the snake dies.

I've been trying for a while now, from placing a delay to the adding of the tail and delaying the collision check, but to no avail, it's always colliding with itself even though it is not.

I can't see what is wrong with the self collision, I would gladly appreciate it if someone can point out what's wrong.

Snake.h

I am trying to let circled objects appear over time – each independently – and change their positions to randomly chosen new ones after 30 frames. Right now – I only can let them change their position after 30 frames but all together at once… It took me a while to combine them in the way that they change all 30 frames, now I want to untangle them. How is that to achieve? BTW – the "numbers array" at first is giving 6 times the value zero, probably because it is connected to the loop? Is there a way to fix this?

Here you can see the main code:

When I run my code it throws a segmentation fault and I have tried rewriting the code several times. Still to no avail, it won't even run. The segmentation fault happens as soon as my program is launched. What it's supposed to do is print a path on screen using the ncurses library in Linux, from the given coordinates. Here is the problematic snippet with the lines where gdb said the segmentation fault was, also it (snippet) reproduces the problem.

EDIT: This will help explain what I'm trying to do, but using dynamic arrays. Breadth First Search

EDIT 2: The variable frontier is supposed to keep track of the X and Y values at a specific index. The add_neighbors function is there to add all four neighbors (providing they aren't already added) to the frontier and came_from arrays.

frontier[index][0] is X value.
frontier[index][1] is Y value.

The before the first while loop I set the start position x1 and y1. During the first while loop, it increments getting the new coordinates from the frontier, then processing and adding to came_from array.

For example:
(x1,y1) (x1+1,y1)
(x1,y1+1) (x1+1,y1+1)
(x1,y2) (x2,y2)

I'm trying to get from (x1,y1) to (x2,y2). Sure hope that explains it better. What I'm trying to implement is a Breadth First Search (BFS) algorithm. Using two arrays, one is frontier (keeps track of visited positions) and came_from (keeps track of X and Y the path from x1,y1 to x2,y2). Updated the code to reflect the first answer. Plus added a comment to explain where the error might be, not really sure but I've been debugging it. It looks like the came_from array never gets set with x and y.

The Code:

i'll try my best to describe what i'm trying to achieve, please correct me if there's a better way for doing so! :)

I just started practicing classes in javascript, and im trying to call an interval from a class function like this:

When I was writing the code I saw that the code would not reset the canvas to (400, 400) after being changed to (600, 600). It would disorientate the canvas and stretch all the shapes with it in evaporation(). When going through all the screens and trying to go back to reset back.

I want to cover my whole website despite a small circle that follows the cursor. So I made a svg with a circle-mask that updates it's position via jquery. But now all my elements below are not clickable, because the svg lays in front of them. Is there a solution how to solve this?

I have a struct for a polynomial with variables x, y, and z