I try to add a method that let a cell get alive if it's clicked by the left mouse button but I don't know how. I tried to add a MouseClickListener but I couldn't connect it to my code. I'm new to JavaFx so it's pretty hard to overview all the functions and how to use them. Every other function of my code works perfectly so far. I hope that anyone of you know how to implement this method. Here is my code:
import com.google.gson.reflect.TypeToken;
import javafx.application.Application;
import javafx.animation.AnimationTimer;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.control.Button;
import javafx.scene.input.MouseButton;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import java.awt.event.MouseEvent;
import java.io.IOException;
import java.util.Random;
import java.util.concurrent.TimeUnit;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import com.google.gson.Gson;
import javax.swing.*;
public class conway extends Application {
private static final int width = 500;
private static final int height = 500;
private static final int cellsize = 10;
private static Gson gson = new Gson();
private static class Life{
private final int reihe;
private final int zeile;
private Boolean[][] rules;
private int[][] grid;
private Random random=new Random();
private final GraphicsContext graphics;
public Life(int reihe, int zeile, GraphicsContext graphics){
this.reihe =reihe;
this.zeile =zeile;
this.graphics=graphics;
grid=new int[reihe][zeile];
this.rules = new Boolean[][]{{false, false, false, true, false, false, false, false, false, false},
{false, false, true, true, false, false, false, false, false, false}};
}
public void init(){
for(int i = 0; i< reihe; i++){
for(int j = 0; j< zeile; j++){
grid[i][j]=random.nextInt(2);
}
}
draw();
}
private void draw(){
graphics.setFill(Color.LAVENDER);
graphics.fillRect(0,0,width,height);
for(int i=0; i<grid.length;i++){
for(int j=0; j<grid[i].length; j++){
if(grid[i][j]==1){
graphics.setFill(Color.gray(0.5,0.5));
graphics.fillRect(i*cellsize, j*cellsize,cellsize,cellsize);
graphics.setFill(Color.PURPLE);
graphics.fillRect((i*cellsize)+1, (j*cellsize)+1, cellsize-2, cellsize-2);
}
else{
graphics.setFill(Color.gray(0.5,0.5));
graphics.fillRect(i*cellsize,j*cellsize,cellsize, cellsize);
graphics.setFill(Color.WHITE);
graphics.fillRect((i*cellsize)+1,(j*cellsize)+1,cellsize-2,cellsize-2);
}
}
}
}
private int countNeighbors(int i, int j){
int sum=0;
int iStart=i==0?0:-1;
int iEnd=i==grid.length - 1 ? 0:1;
int jStart=j==0?0:-1;
int jEnd=j==grid[0].length - 1 ? 0:1;
for (int k=iStart; k<=iEnd;k++){
for(int l=jStart;l<=jEnd;l++){
sum+=grid[i+k][l+j];
}
}
sum-=grid[i][j];
return sum;
}
public void tick(){
int[][] next=new int[reihe][zeile];
for(int i = 0; i< reihe; i++){
for(int j = 0; j< zeile; j++){
int nachbar= countNeighbors(i,j);
if(rules[grid[i][j]][nachbar] == true){
next[i][j] = 1;
}
}
}
grid=next;
draw();
}
public void safe() throws IOException {
JsonArray to_safe = new JsonArray();
Path pfad = Paths.get("C:\\Users\\Frodo\\IdeaProjects\\gameoflife\\only_safe_file_for_now.json");
if(Files.exists(pfad) == false) {
Files.createFile(pfad);
}
for(int i = 0; i<grid.length; i++){
JsonArray helper = new JsonArray();
for (int j = 0; j<grid[0].length; j++){
helper.add(grid[i][j]);
}
to_safe.add(helper);
}
Files.writeString(pfad, gson.toJson(to_safe));
}
public void load() throws IOException{
int saved_grid[][];
Path pfad = Paths.get("C:\\Users\\Frodo\\IdeaProjects\\gameoflife\\only_safe_file_for_now.json");
if(Files.exists(pfad) == false) {
return;
}
else {
String array_string = Files.readString(pfad);
saved_grid = gson.fromJson(array_string, new TypeToken<int[][]>(){}.getType());
if (saved_grid.length == 0) {
return;
}
}
grid = saved_grid;
draw();
}
}
public static void main(String[] args) {
launch();
}
public void start(Stage primaryStage) {
VBox root = new VBox(10);
Scene scene = new Scene(root, width, height + 100);
final Canvas canvas = new Canvas(width, height);
final boolean[] leftclick = new boolean[1];
leftclick[0] =false;
scene.setOnMouseClicked(e->{
if(e.getButton().equals(MouseButton.PRIMARY)){
if(leftclick[0]){
leftclick[0] =false;
}
else leftclick[0] =true;
}
});
Button reset = new Button("Reset");
Button step = new Button("Step");
Button run = new Button("Run");
Button stop = new Button("Stop");
Button safe_state = new Button("Safe");
Button load_button = new Button("Load");
Button terminate = new Button("Terminate");
root.getChildren().addAll(canvas, new HBox(10, reset, step, run, stop, safe_state, load_button, terminate));
primaryStage.setScene(scene);
primaryStage.show();
int rows = (int) Math.floor(height / cellsize);
int cols = (int) Math.floor(width / cellsize);
GraphicsContext graphics = canvas.getGraphicsContext2D();
Life life = new Life(rows, cols, graphics);
life.init();
AnimationTimer Animation = new AnimationTimer() {
private long lastUpdate=0;
@Override
public void handle(long now) {
if ((now - lastUpdate) >= TimeUnit.MILLISECONDS.toNanos(100)) {
life.tick();
lastUpdate = now;
}
}
};
reset.setOnAction(l -> life.init());
run.setOnAction(l -> Animation.start());
step.setOnAction(l -> life.tick());
stop.setOnAction(l -> Animation.stop());
safe_state.setOnAction(l-> {
try {
life.safe();
} catch (IOException e) {
e.printStackTrace();
}
});
load_button.setOnAction(l -> {
try {
life.load();
} catch (IOException e) {
e.printStackTrace();
}
});
terminate.setOnAction(l -> {
Stage stage = (Stage) terminate.getScene().getWindow();
stage.close();
});
}
}
