Animating a sprite

In this section, we will learn how to make a quick and dirty little animation in our SDL application. That will not be the way we do animations in our final game, but it will give you an idea of how we could create animations from within SDL by swapping out textures over time. I am going to present the code to animate a sprite broken into two parts. The first part includes our preprocessor macros, global variables, and the show_animation function:

#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/FranchiseExplosion%d.png"
#define FRAME_COUNT 7

int current_frame = 0;
Uint32 last_time;
Uint32 current_time;
Uint32 ms_per_frame = 100; // animate at 10 fps

SDL_Window *window;
SDL_Renderer *renderer;
SDL_Rect dest = {.x ...