package ceccs;

import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;

public class Projectile extends Circle {
    RunNGunApp app;

    double x,y,vx,vy, size;

    public Projectile(RunNGunApp app, double x0, double y0, double vx0, double vy0){
        this.app = app;
        x = x0;
        y = y0;
        vx = vx0;
        vy = vy0;
        size = 3;
        setRadius(size);
        setFill(Color.RED);

        //add new projectile to list of projectiles
        app.projectiles.add(this);
        //add to the visual data
        app.motionPane.getChildren().add(this);

    }

    void updatePhysics(){
        x += vx;
        y += vy;
    }

    void updateGraphics(){
        setLayoutX(x);
        setLayoutY(y);
        setRadius(size);
    }

}

    //above start() in the class body
    ArrayList projectiles;

...
   //loops were added to the update methods
    void updatePhysics(){
        app.player.updatePhysics();
        for (int i = 0; i < app.projectiles.size(); i++) {
            app.projectiles.get(i).updatePhysics();
        }
    }

    void updateGraphics(){
        app.player.updateGraphics();
        for (int i = 0; i < app.projectiles.size(); i++) {
            app.projectiles.get(i).updateGraphics();
        }
    }

...