Moving the sprite

Now that we have learned how to animate our sprite in a frame-by-frame animation, we will learn how to move a sprite around on our canvas. I want to keep our spaceship animated, but I would prefer it not run in an explosion loop. In our sprites folder, I have included a simple four-stage animation that causes our ship's engines to flicker. The source code is quite lengthy, so I will introduce it in three parts: a preprocessor and global variable section, the show_animation function, and the main function.

Here is the code that defines the preprocessor directives and the global variables at the beginning of our cpp file:

#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>

#include <emscripten.h>
#include <stdio.h>

#define SPRITE_FILE "sprites/Franchise1.png"
#define EXP_FILE "sprites/Franchise%d.png"

#define FRAME_COUNT...