Gamesetup

import javafx.application.Application;
import javafx.stage.Stage;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.stream.IntStream;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.scene.Cursor;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.image.Image;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.TextAlignment;
import javafx.stage.Stage;
import javafx.util.Duration;

		public class Gamesetup extends Application {
			
			//variables
			private static final Random RAND = new Random();
			private static final int WIDTH = 800;
			private static final int HEIGHT = 600;
			private static final int PLAYER_SIZE = 60;
			static final Image PLAYER_IMG = new Image("file:///C:/Users/alias/Downloads/Compressed/player.png"); 
			static final Image EXPLOSION_IMG = new Image("file:///C:/Users/alias/Downloads/Compressed/explosion.png");
			static final int EXPLOSION_W = 128;
			static final int EXPLOSION_ROWS = 3;
			static final int EXPLOSION_COL = 3;
			static final int EXPLOSION_H = 128;
			static final int EXPLOSION_STEPS = 15;
			
			static final Image BOMBS_IMG[] = {
					new Image("file:///C:/Users/alias/Downloads/Compressed/1.png"),
					new Image("file:///C:/Users/alias/Downloads/Compressed/1.png"),
					new Image("file:///C:/Users/alias/Downloads/Compressed/1.png"),
					new Image("file:///C:/Users/alias/Downloads/Compressed/1.png"),
					new Image("file:/images/5.png"),
					new Image("file:/images/6.png"),
					new Image("file:/images/7.png"),
					new Image("file:/images/8.png"),
					new Image("file:/images/9.png"),
					new Image("file:/images/10.png"),
			};
			
			final int MAX_BOMBS = 10,  MAX_SHOTS = MAX_BOMBS * 2;
			boolean gameOver = false;
			private GraphicsContext gc;
			
			Rocket player;
			List<Shot> shots;
		//	List<Universe> univ;
			List<Bombs> Bombs;
			
			private double mouseX;
			private int score;

			//start
			public void start(Stage stage) throws Exception {
				Canvas canvas = new Canvas(WIDTH, HEIGHT);	
				gc = canvas.getGraphicsContext2D();
				Timeline timeline = new Timeline(new KeyFrame(Duration.millis(100), e -> run(gc)));
				timeline.setCycleCount(Timeline.INDEFINITE);
				timeline.play();
				canvas.setCursor(Cursor.MOVE);
				canvas.setOnMouseMoved(e -> mouseX = e.getX());
				canvas.setOnMouseClicked(e -> {
					if(shots.size() < MAX_SHOTS) shots.add(player.shoot());
					if(gameOver) { 
						gameOver = false;
						setup();
					}
				});
				setup();
				stage.setScene(new Scene(new StackPane(canvas)));
				stage.setTitle("Space Invaders");
				stage.show();
				
			}

			//setup the game
			private void setup() {
				//univ = new ArrayList<>();
				shots = new ArrayList<>();
				Bombs = new ArrayList<>();
				player = new Rocket(WIDTH / 2, HEIGHT - PLAYER_SIZE, PLAYER_SIZE, PLAYER_IMG);
				score = 0;
				IntStream.range(0, MAX_BOMBS).mapToObj(i -> this.newBomb()).forEach(Bombs::add);
			}
			
			//run Graphics
			private void run(GraphicsContext gc) {
				gc.setFill(Color.grayRgb(20));
				gc.fillRect(0, 0, WIDTH, HEIGHT);
				gc.setTextAlign(TextAlignment.CENTER);
				gc.setFont(Font.font(20));
				gc.setFill(Color.WHITE);
				gc.fillText("Score: " + score, 60,  20);
			
				
				if(gameOver) {
					gc.setFont(Font.font(35));
					gc.setFill(Color.YELLOW);
					gc.fillText("Game Over \n Your Score is: " + score + " \n Click to play again", WIDTH / 2, HEIGHT /2.5);
				
				}
			//univ.forEach(Universe::draw);
			
				player.update();
				player.draw();
				player.posX = (int) mouseX;
				Bombs.stream().peek(Rocket::update).peek(Rocket::draw).forEach(e->{
					if(player.colide(e) && !player.exploding) {
						player.explode();
					}
				});
			
//				Bombs.stream().peek(Rocket::update).peek(Rocket::draw).forEach(e -> {
//					if(player.colide(e) && !player.exploding) {
//						player.explode();
//					}
//				});
//				
				
				for (int i = shots.size() - 1; i >=0 ; i--) {
					Shot shot = shots.get(i);
					if(shot.posY < 0 || shot.toRemove)  { 
						shots.remove(i);
						continue;
					}
					shot.update();
					shot.draw();
					for (Bombs bomb : Bombs) {
						if(shot.colide(bomb) && !bomb.exploding) {
							score++;
							bomb.explode();
							shot.toRemove = true;
						}
					}
				}
				
				for (int i = Bombs.size() - 1; i >= 0; i--){  
					if(Bombs.get(i).destroyed)  {
						Bombs.set(i, newBomb());
					}
				}
			
				gameOver = player.destroyed;
//				if(RAND.nextInt(10) > 2) {
//					univ.add(new Universe());
//				}
//				for (int i = 0; i < univ.size(); i++) {
//					if(univ.get(i).posY > HEIGHT)
//						univ.remove(i);
//				}
			}

			
			
			
			
			 Bombs newBomb() {
		
		return new Bombs(50 + RAND.nextInt(WIDTH-100),0,PLAYER_SIZE,BOMBS_IMG[RAND.nextInt(BOMBS_IMG.length)]);
			 }	
		int distance(int x1,int y1,int x2,int y2){
			return(int)Math.sqrt(Math.pow((x1 - x2),2)+ Math.pow((y1-y2),2));
		
			 } 

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