android studio game development

Question

I am making a game. In the game there is a method called movement() listed below that moves one circle down. I want the game to run the gamelost() method once the circle tbc's y value goes greater than yc's y value. So basically once tbc falls from the top of the phone screen past yc, the game runs the gamelost() method.

I tried putting the if statement in the main method after movement(); and even in the movement() method, for both the game does not say game over... Instead the circle just falls below from the top of the screen to the bottom an disappears. Did I do something wrong. Can someone please help me with this?

protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 onCreateNew();
 play.setOnClickListener(new View.OnClickListener() {
 public void onClick(View v) {
 onPlayClick();
 getColor();
 movement();
 }
 });
protected void movement(){
 final int delay = delay();
 h.postDelayed(new Runnable() {
 public void run() {
 tgc.setY(tgc.getY() + 8);
 tbc.setY(tbc.getY() + 8);
 trc.setY(trc.getY() + 8);
 tyc.setY(tyc.getY() + 8);
 h.postDelayed(this, delay);
 }
 },delay);
 if (tbc.getY() > yc.getY()){
 gameLost();
 } }
 }

Answer 1

Welcome to Asynchronous Programming.

PostDelayed is starting an asynchronous thread. So the code to check for gameLost should be inside the new Runnable

protected void movement(){
 final int delay = delay();
 h.postDelayed(new Runnable() {
 public void run() {
 tgc.setY(tgc.getY() + 8);
 tbc.setY(tbc.getY() + 8);
 trc.setY(trc.getY() + 8);
 tyc.setY(tyc.getY() + 8);
 if (tbc.getY() > yc.getY()){
 gameLost();
 }
 h.postDelayed(this, delay);
 }
 },delay);
 }
 }

• user7645580: Hi, Thanks for the response. I have another question. Does that mean i have to make all my other methods such as score and others called inside the asynchronous thread in movement too?
• Sarvex: You need to know async programming; and understand the code flow, it is not a simple function call. You are sending code to be called at some point in future.