parcial

#include <allegro5/allegro.h>
#include <allegro5/allegro_image.h>

int main()
{
    ALLEGRO_DISPLAY *display = NULL;
    ALLEGRO_EVENT_QUEUE *queue = NULL;
    ALLEGRO_BITMAP *fondo = NULL;
    ALLEGRO_BITMAP *player = NULL;

    al_init();
    al_init_image_addon();
    al_install_keyboard();

    queue = al_create_event_queue();
    fondo = al_load_bitmap("bg.png");
    player = al_load_bitmap("player.png");
    display = al_create_display(900, 600);
    al_register_event_source(queue, al_get_keyboard_event_source());

    int frameNumber = 1;
    int drawFrame = 0;
    int Xmin = 0;
    int Xmax = 699;
    int Ymin = 459;
    int posX = 500;
    int posY = 300;
    int speed;
    int flag = NULL;
    int jumpSpeed;
    bool isGrounded = true;
    bool done = false;
    ALLEGRO_EVENT evento;


    while(!done)
    {
        if (posY >= Ymin)
        {
            isGrounded = true;
            posY = Ymin;
            speed = 0;
            jumpSpeed = 0;
        }
        else
            isGrounded = false;

        if (!isGrounded)
        {
            posY = posY + speed;
            if (jumpSpeed > 0)
            {
                speed -= 5;
                jumpSpeed -= 5;
            }
            else
                speed += 5;

        }
        if(!al_is_event_queue_empty(queue))
        {
            al_get_next_event(queue, &evento);
            switch (evento.keyboard.keycode)
            {
            case ALLEGRO_KEY_UP:
                if (isGrounded)
                {
                    jumpSpeed = 30;
                    isGrounded = false;
                    posY -= 1;
                }
                break;
            case ALLEGRO_KEY_LEFT:
                if (posX > Xmin)
                {
                    if (isGrounded)
                    {
                        posX -= 30;
                        drawFrame = frameNumber * 26;
                    }
                    else
                    {
                        posX -= 15;
                        drawFrame = 130;
                    }
                    flag = NULL;
                }
                al_rest(0.05);
                break;
            case ALLEGRO_KEY_RIGHT:
                if (posX < Xmax)
                {
                    if (isGrounded)
                    {
                        posX += 30;
                        drawFrame = frameNumber * 26;
                    }
                    else
                    {
                        posX += 15;
                        drawFrame = 130;
                    }
                    flag = ALLEGRO_FLIP_HORIZONTAL;
                }
                al_rest(0.05);
                break;
            case ALLEGRO_KEY_ESCAPE:
                done = true;
            default:
                break;
            }
            frameNumber += 1;
            if (frameNumber > 4)
                frameNumber = 1;
            al_flush_event_queue(queue);
        }
        else if (al_is_event_queue_empty(queue))
        {
            if(isGrounded)
                drawFrame = 0;
            else
                drawFrame = 130;
        }

        al_draw_scaled_bitmap(fondo, 0, 0, 300, 200, 0, 0, 900, 600, NULL);
        al_draw_scaled_bitmap(player, drawFrame, 0, 26, 30, posX, posY, 78, 90, flag);

        al_flip_display();
    }

    al_destroy_bitmap(fondo);
    al_destroy_display(display);
    al_destroy_event_queue(queue);

    return 0;
}