detecting touch on specific area in Flappy bird clone

Question

So, I am making a flappy bird clone. The thing is that I am new in programming with java and libgdx, and I would kindly like to ask you for your help. I would like to make a touch detection on a specific area (just a simple rectangle shape), instead of clicking all over the screen.

Here is my current code from InputHandler class:

public class InputHandler implements InputProcessor {
private Bird myBird;
private GameWorld myWorld;

// Ask for a reference to the Bird when InputHandler is created.
public InputHandler(GameWorld myWorld) {
    // myBird now represents the gameWorld's bird.
   this.myWorld = myWorld;
   myBird = myWorld.getBird(); }

@Override
public boolean touchDown(int screenX, int screenY, int pointer, int button) {

    if (myWorld.isReady()) {
        myWorld.start();
    }

    myBird.onClick();

    if (myWorld.isGameOver() || myWorld.isHighScore()) {
        // Reset all variables, go to GameState.READ
        myWorld.restart();
    }

    return true;
}

@Override
public boolean keyDown(int keycode) {
    return false;
}

@Override
public boolean keyUp(int keycode) {
    return false;
}

@Override
public boolean keyTyped(char character) {
    return false;
}

@Override
public boolean touchUp(int screenX, int screenY, int pointer, int button) {
    return false;
}

@Override
public boolean touchDragged(int screenX, int screenY, int pointer) {
    return false;
}

@Override
public boolean mouseMoved(int screenX, int screenY) {
    return false;
}

@Override
public boolean scrolled(int amount) {
    return false;
}

}

You'd be better served by following along a tutorial than expecting someone to fill in the bits and pieces. All the best. — nikhil, Jul 08 '14 at 17:42

Madmenyo · Answer 1 · 2014-07-09T10:43:12.667

Create a method that returns true if the touch is within bounds of a rectangle.

public boolean ContainsPoint(Rectangle rectangle, Point touch)
{
    if (touch.X > rectangle.X && touch.X < rectangle.X + rectangle.Width &&
    touch.Y > rectangle.Y && touch.Y < rectangle.Y + rectangle.Height)
    return true;
    else
    return false;
}

You can also add a method like this to the rectangle class itself so you can just make a call to the rectangle, something like this: rectangle.

ContainsPoint(new Point(TouchXCoord, TouchYCoord));

score 0 · Answer 2 · answered Jul 08 '14 at 18:13

0

You are given screenX and screenY, so the easiest way is just hardcode coordinates for a rectangle that you check the touch coordinates against. If you physically want to show the rectangle then you have to do that when the screen is drawn.

answered Jul 08 '14 at 18:13

RScottCarson

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detecting touch on specific area in Flappy bird clone

2 Answers2