volcano_2022/source/player.cpp

#include "player.h"

// Constructor
Player::Player(SDL_Renderer *renderer, Asset *asset, Input *input, Map *map)
{
    this->asset = asset;
    this->renderer = renderer;
    this->input = input;
    this->map = map;

    sound_jump = JA_LoadSound(asset->get("sound_player_jump.wav").c_str());
    sound_death = JA_LoadSound(asset->get("sound_player_death.wav").c_str());
    sound_coin = JA_LoadSound(asset->get("sound_player_coin.wav").c_str());

    texture = new LTexture();
    loadTextureFromFile(texture, asset->get("player.png"), renderer);

    sprite = new AnimatedSprite(texture, renderer, asset->get("player.ani"));

    w = 16;
    h = 24;
    x = 3 * 16;
    y = 168;
    vx = 0;
    vy = 0;
    const SDL_Rect rect = {(int)x, (int)y, 16, 24};
    sprite->setPos(rect);
    sprite->setCurrentAnimation("stand");
    sprite->setFlip(SDL_FLIP_HORIZONTAL);

    // jumpStrenght = -5.6f;
    jumpStrenght = 2.0f;
    gravity = 0.3f;
    accelX = 0.12f;
    maxVX = 1.5f;
    maxVY = 4.0f;

    jumping = false;
    jumpPressed = false;
    standing = true;
    invulnerable = false;
    enabled = true;
    cooldown = 0;
    lives = 10;
    coins = 0;
    key.insert(key.end(), {0, 0, 0, 0, 0, 0});
    const SDL_Point p = {0, 0};
    collider.insert(collider.end(), {p, p, p, p, p, p, p, p, p, p, p, p});
    underFeet.insert(underFeet.end(), {p, p, p});
}

// Destructor
Player::~Player()
{
    JA_DeleteSound(sound_jump);
    JA_DeleteSound(sound_death);
    JA_DeleteSound(sound_coin);

    texture->unload();
    delete texture;

    delete sprite;
}

// Actualiza todas las variables
void Player::update()
{
    checkInput();
    addGravity();
    move();
    animate();
}

// Dibuja el objeto
void Player::render()
{
    sprite->render();
}

// Comprueba las entradas y modifica variables
void Player::checkInput()
{
    if (input->checkInput(INPUT_LEFT, REPEAT_TRUE))
    {
        vx = std::max(vx -= accelX, -maxVX);
        sprite->setFlip(SDL_FLIP_NONE);
    }
    else if (input->checkInput(INPUT_RIGHT, REPEAT_TRUE))
    {
        vx = std::min(vx += accelX, maxVX);
        sprite->setFlip(SDL_FLIP_HORIZONTAL);
    }
    else
    {
        if (vx > 0.0f)
        {
            vx = std::max(vx -= accelX, 0.0f);
        }
        else
        {
            vx = std::min(vx += accelX, 0.0f);
        }
    }

    if (input->checkInput(INPUT_UP, REPEAT_TRUE))
    {
        if (!jumping)
        {
            if (!jumpPressed)
            {
                jumpStrenght = 2.0f;
                vy -= jumpStrenght;
                jumping = true;
                jumpPressed = true;
            }
        }
        else
        {
            jumpStrenght = std::max(jumpStrenght -= 0.4f, 0.0f);
            vy -= jumpStrenght;
        }
        jumpPressed = true;
    }
    else
    {
        jumpPressed = false;
    }
}

// Aplica la gravedad
void Player::addGravity()
{
    if (!isOnFloor())
    {
        vy = std::min(vy += gravity, maxVY);
        jumping = true;
    }
}

// Actualiza los puntos de colisión
void Player::updateColliders()
{
    const SDL_Point p = {(int)x, (int)y};

    // Lado izquierdo
    collider[0] = p;
    collider[1] = {p.x, p.y + 7};
    collider[2] = {p.x, p.y + 12};
    collider[3] = {p.x, p.y + 18};
    collider[4] = {p.x, p.y + 23};

    // Lado derecho
    collider[5] = {p.x + 15, p.y};
    collider[6] = {p.x + 15, p.y + 7};
    collider[7] = {p.x + 15, p.y + 12};
    collider[8] = {p.x + 15, p.y + 18};
    collider[9] = {p.x + 15, p.y + 23};

    // Centro
    collider[10] = {p.x + 7, p.y};
    collider[11] = {p.x + 7, p.y + 23};
}

// Actualiza los puntos de los pies
void Player::updateFeet()
{
    const SDL_Point p = {(int)x, (int)y};

    underFeet[0] = {p.x, p.y + h};
    underFeet[1] = {p.x + 7, p.y + h};
    underFeet[2] = {p.x + 15, p.y + h};
}

// Compruena las colisiones con el mapa
bool Player::checkMapCollisions()
{
    bool collision = false;

    updateColliders();

    for (auto c : collider)
    {
        collision |= (map->getTile(c) == wall);
    }

    return collision;
}

// Mueve al jugador en función de la velocidad/desplazamiento
void Player::move()
{
    const int tile = map->getTileWidth();

    x += vx;
    if (checkMapCollisions())
    {
        // Recoloca
        if (vx > 0)
        {
            do
            {
                x--;
            } while (checkMapCollisions());
        }
        else
        {
            do
            {
                x++;
            } while (checkMapCollisions());
        }

        vx = 0.0f;
    }

    const bool wasOnFloor = isOnFloor();
    y += vy;
    if (checkMapCollisions())
    {
        // Recoloca
        if (vy > 0.0f)
        {
            y -= ((int)y + h) % tile;
        }
        else
        {
            y += tile - ((int)y % tile);
        }

        jumping = false;
        vy = 0.0f;
    }
    else if ((!wasOnFloor) && (isOnFloor()) && (vy > 0.0f))
    {
        jumping = false;
        vy = 0.0f;
        y -= ((int)y + h) % tile;
    }

    sprite->setPosX(x);
    sprite->setPosY(y);
}

// Anima al jugador
void Player::animate()
{
    if (jumping)
    {
        sprite->setCurrentAnimation("jump");
    }
    else
    {
        if (abs(vx) < 0.50f)
        {
            sprite->setCurrentAnimation("stand");
        }
        else
        {
            sprite->setCurrentAnimation("walk");
        }
    }

    sprite->animate();
}

// Comprueba si el jugador tiene suelo debajo de los pies
bool Player::isOnFloor()
{
    bool onFloor = false;

    updateFeet();

    for (auto f : underFeet)
    {
        onFloor |= ((map->getTile(f) == wall) || (map->getTile(f) == passable));
    }
    return onFloor;
}