package ceccs;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

import java.util.ArrayList;

public class RunNGunApp extends Application {

    Player player;
    GameTimer gTimer;
    StackPane outerStackPane;
    Pane motionPane;
    double physW,physH;
    Rectangle backgroundRect;

    @Override
    public void start(Stage primaryStage) throws Exception {
        physH = 600;
        physW = 800;

        motionPane = new Pane();
        backgroundRect = new Rectangle(physW,physH, Color.BLACK);
        outerStackPane = new StackPane(backgroundRect, motionPane);
        Scene scn = new Scene(outerStackPane, physW, physH);
        primaryStage.setScene(scn);
        primaryStage.setResizable(false);
        primaryStage.show();

        player = new Player(this);
        gTimer = new GameTimer(this);

        //*motion test*//
        player.vx = .1;
        player.vy = .1;
        gTimer.start();

    }

    public static void main(String[] args) {
        launch(args);
    }
}

package ceccs;

import javafx.animation.AnimationTimer;

public class GameTimer extends AnimationTimer {

    RunNGunApp app;

    public GameTimer(RunNGunApp app){
        this.app = app;
    }

    @Override
    public void start() {
        super.start();
    }

    @Override
    public void handle(long now) {
        updatePhysics();
        updateGraphics();
    }

    void updatePhysics(){
        app.player.updatePhysics();
    }

    void updateGraphics(){
        app.player.updateGraphics();
    }


}

package ceccs;

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

public class Player extends Circle {

    RunNGunApp app;

    double x, y, vx, vy, ax, ay, size;

    public Player(RunNGunApp app){
        this.app = app;
        size = 5;
        setRadius(size);
        setFill(Color.LIME);
        app.motionPane.getChildren().add(this);
    }

    void updatePhysics(){
        vx += ax;
        x += vx;

        vy += ay;
        y += vy;
    }

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