ui_button.cpp

The UIButton object has several functions that must be defined. We have created a new ui_button.cpp file that will hold all of these new functions. We will need to define a constructor, as well as MouseMove, MouseClick, MouseUp, KeyDown, and RenderUI.

First, we will include our game.hpp file:

#include "game.hpp"

Now, we will define our constructor function:

UIButton::UIButton( int x, int y, char* file_name, char* hover_file_name, char* click_file_name, void (*callback)() ) {
    m_Callback = callback;
    m_dest.x = x;
    m_dest.y = y;
    SDL_Surface *temp_surface = IMG_Load( file_name );
 
    if( !temp_surface ) {
        printf("failed to load image: %s\n", IMG_GetError() );
        return;
    }
    else {
        printf("success creating ui button surface\n");
    }
    m_SpriteTexture = SDL_CreateTextureFromSurface( renderer, 
    temp_surface...