/// <summary>
        /// Gets player horizontal movement and jump commands from input.
        /// </summary>
        private void GetInput(
            KeyboardState keyboardState, 
            GamePadState gamePadState, 
            TouchCollection touchState,
            AccelerometerState accelState, 
            DisplayOrientation orientation)
        {
            // Get analog horizontal movement.
            movement = gamePadState.ThumbSticks.Left.X * MoveStickScale;

            // Ignore small movements to prevent running in place.
            if (Math.Abs(movement) < 0.5f)
                movement = 0.0f;

            // Move the player with accelerometer
            if (Math.Abs(accelState.Acceleration.Y) > 0.10f)
            {
                // set our movement speed
                movement = MathHelper.Clamp(-accelState.Acceleration.Y * AccelerometerScale, -1f, 1f);

                // if we're in the LandscapeLeft orientation, we must reverse our movement
                if (orientation == DisplayOrientation.LandscapeRight)
                    movement = -movement;
            }

            // If any digital horizontal movement input is found, override the analog movement.
            if (keyboardState.IsKeyDown(Keys.Left) ||
                keyboardState.IsKeyDown(Keys.A))

            {
                movement = -1.0f;
            }
            else if (keyboardState.IsKeyDown(Keys.Right) ||
                     keyboardState.IsKeyDown(Keys.D))
            {
                movement = 1.0f;
            }

            // Weapon switching
            if (gamePadState.IsButtonDown(Buttons.DPadLeft))
            {
                weapon.Reset();
                weapon = m_handgun;
            }
            else if (gamePadState.IsButtonDown(Buttons.DPadUp))
            {
                weapon.Reset();
                weapon = m_shotgun;
            }
            else if (gamePadState.IsButtonDown(Buttons.DPadRight))
            {
                weapon.Reset();
                weapon = m_knife;
            }
            if (gamePadState.IsButtonDown(SwitchButton) && !old_gamePadState.IsButtonDown(SwitchButton))
            {
                weapon.Reset();
                if (weapon == m_handgun)
                    weapon = m_shotgun;
                else if (weapon == m_shotgun)
                    weapon = m_knife;
                else
                    weapon = m_handgun;
            }

            // Check if the player wants to jump.
            isJumping =
                gamePadState.IsButtonDown(JumpButton) ||
                keyboardState.IsKeyDown(Keys.Space) ||
                keyboardState.IsKeyDown(Keys.Up) ||
                keyboardState.IsKeyDown(Keys.W) ||
                touchState.AnyTouch();

            if (gamePadState.IsButtonDown(RollButton) && !old_gamePadState.IsButtonDown(RollButton))
            {
                if (canRollAgain && isOnGround)
                {
                    isRolling = true;
                    canRollAgain = false;
                }
            }

            isThrowGrenade = false;
            if (!isRolling)
            {
                // release the charged bomb
                if (old_gamePadState.IsButtonDown(GrenadeButton) && !gamePadState.IsButtonDown(GrenadeButton))
                {
                    m_bomb.Shoot();
                }
                // charge up the bomb throw if button held
                if (gamePadState.IsButtonDown(GrenadeButton) && isOnGround && m_bomb.CanAttack)
                {
                    isThrowGrenade = true;
                    m_bomb.Charging(this.position);
                }
                // other attacks
                else if ((gamePadState.IsButtonDown(FireButton) && !old_gamePadState.IsButtonDown(FireButton)) ||
                        (keyboardState.IsKeyDown(Keys.Z)) ||
                        (gamePadState.IsButtonDown(FireButton2) && !old_gamePadState.IsButtonDown(FireButton2)))
                {
                    weapon.Shoot();
                }

            }

            old_gamePadState = gamePadState;
        }
        /// <summary>
        /// Loads the player sprite sheet and sounds.
        /// </summary>
        public void LoadContent()
        {
            // Load animated textures.
            idleAnimation = new Animation(Level.Content.Load<Texture2D>("Sprites/Player/cop_idle"), 0.1f, true);
            runAnimation = new Animation(Level.Content.Load<Texture2D>("Sprites/Player/cop_running"), 0.1f, true);
            jumpAnimation = new Animation(Level.Content.Load<Texture2D>("Sprites/Player/cop_jump"), 0.1f, false);
            celebrateAnimation = new Animation(Level.Content.Load<Texture2D>("Sprites/Player/Celebrate"), 0.1f, false);
            dieAnimation = new Animation(Level.Content.Load<Texture2D>("Sprites/Player/cop_die"), 0.1f, false);
            rollAnimation = new Animation(Level.Content.Load<Texture2D>("Sprites/Player/cop_roll2"), 0.1f, false);
            grenadeAnimation = new Animation(Level.Content.Load<Texture2D>("Sprites/Player/cop_grenade"), 0.1f, false);

            killedSound = Level.Content.Load<SoundEffect>("Sounds/killedSound");
            jumpSound = Level.Content.Load<SoundEffect>("Sounds/jumpSound");
            rollSound = Level.Content.Load<SoundEffect>("Sounds/rollSound");
            hitSound = Level.Content.Load<SoundEffect>("Sounds/hitSound");

            // Calculate bounds within texture size.
            int width = (int)(idleAnimation.FrameWidth * 0.4);
            int left = (idleAnimation.FrameWidth - width) / 2;
            int height = (int)(idleAnimation.FrameWidth * 0.8);
            int top = idleAnimation.FrameHeight - height;
            localBounds = new Rectangle(left, top, width, height);

            m_handgun = new HandGun(level, position, this);
            m_shotgun = new Shotgun(level, position, this);
            m_knife = new Knife(level, position, this);
            m_bomb = new Grenade(level, position, this);

            weapon = m_handgun;

            font = level.Content.Load<SpriteFont>("Fonts/Hud");
        }