ready-set-net/Arrow.java at main · KimRebamba/ready-set-net · GitHub

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import greenfoot.*;

public class Arrow extends Actor
{
    private int power = 0;
    private boolean visible = false;

    public Arrow()
    {

        GreenfootImage arrowImage = new GreenfootImage(50, 10);
        arrowImage.setColor(Color.WHITE);
        arrowImage.fillRect(0, 4, 40, 2);


        int[] xPoints = {40, 50, 40};
        int[] yPoints = {0, 5, 10};
        arrowImage.fillPolygon(xPoints, yPoints, 3);

        setImage(arrowImage);
        setVisible(false);
    }

    public void setPower(int power)
    {
        this.power = power;


        int length = Math.max(20, Math.min(80, power / 3));

        GreenfootImage arrowImage = new GreenfootImage(length + 10, 10);
        arrowImage.setColor(Color.WHITE);
        arrowImage.fillRect(0, 4, length, 2);


        int[] xPoints = {10, 0, 10};
        int[] yPoints = {0, 5, 10};
        arrowImage.fillPolygon(xPoints, yPoints, 3);
        arrowImage.fillRect(10, 4, length, 2);

        setImage(arrowImage);
    }

    public void setVisible(boolean visible)
    {
        this.visible = visible;

        if (!visible)
        {
            GreenfootImage transparent = new GreenfootImage(1, 1);
            transparent.setTransparency(0);
            setImage(transparent);
        }
    }

    public int getPower()
    {
        return power;
    }

    public boolean isVisible()
    {
        return visible;
    }

    private boolean facingLeft = false;
    private boolean lastFacingLeft = false;

    public void setFacingLeft(boolean facingLeft)
    {
        this.facingLeft = facingLeft;
        updateDirection();
    }

    private void updateDirection()
    {

        if (facingLeft != lastFacingLeft)
        {
            GreenfootImage img = getImage();
            img.mirrorHorizontally();
            setImage(img);
            lastFacingLeft = facingLeft;
        }
    }
}