Помогите расшифровать С исходник

[jerri]

void moverjean (struct protagonista *jean, Mix_Chunk *fx[]) {

    /* Salto */
    if (jean->salto == 1) {
        if (jean->altura == 0) /* Reproducir sonido de salto */
            Mix_PlayChannel(-1, fx[3], 0);
        if (jean->altura < 56) {
            jean->altura += 1.6;
            if ((jean->colision[0] == 0) && (jean->altura < 44))
                jean->y -= 1.5;
            jean->animacion = 0;
        }
        else {
            jean->salto = 2;
            jean->colision[0] = 0;
        }
    }


    /* Mover a la derecha */
    if (jean->pulsa[3] == 1) {
        jean->direccion = 1;
        if (jean->colision[3] == 0) {
            if (jean->salto == 0) {
              if (jean->animacion < 13)
                    jean->animacion ++;
              else
                    jean->animacion = 0;
            }
            if (jean->pulsa[1] == 1)
                jean->x += 0.30;
            else
                jean->x += 0.65;
        }
    }

    /* Mover a la izquierda */
    if (jean->pulsa[2] == 1) {
        jean->direccion = 0;
        if (jean->colision[2] == 0) {
            if (jean->salto == 0) {
              if (jean->animacion < 13)
                    jean->animacion ++;
              else
                    jean->animacion = 0;
            }
            if (jean->pulsa[1] == 1)
                jean->x -= 0.30;
            else
                jean->x -= 0.65;
        }

    }

}

Вот тут. вроде все понимаю но не совсем.

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