Programming is essential for making the game move.
What a program does is give commands to the machine.
Though they seem difficult when you first look at them, you could say that these commands are only simple things that get understood and done in a certain order.
First of all, the game characters are all displayed in order.
Then, let’s say you give one character the command “walk”, then the order is carried out, and the character walks.
However, this doesn’t show right away. Maybe there’s a wall or an enemy in the way, making the character unable to proceed.
In this case, there’s a collision, so before the walking animation displays, your character is returned back to its spawn point.
Once everyone’s position is figured out, all the characters are displayed again. In a really basic way, all games are just this process repeated over and over again.
Though each command is one simple order, when you start combining them all together, you can make anything possible.