/**
* What happens with the widget when another widget touches it.
*
* @param other_body The body that touched it.
* @param f The x,y coordinate that is the contact point.
*/
public void reactToTouchingBody(CollisionEvent e) {
float speed = MOVEMENT_SPEED + (MOVEMENT_SPEED * bounces * 0.05f);
if (currentDirection == Direction.WEST) {
currentDirection = direction.EAST;
body.setForce(2 * speed, 0);
} else if (currentDirection == Direction.EAST) {
currentDirection = Direction.WEST;
body.setForce(-2 * speed, 0);
} else if (currentDirection == Direction.NORTH) {
currentDirection = Direction.SOUTH;
body.setForce(0, 2 * speed);
} else if (currentDirection == Direction.SOUTH) {
currentDirection = direction.NORTH;
body.setForce(0, -2 * speed);
}
bounces++;
}
/** Activates the widget. */
public void activateWidget() {
// Enforce that reset is called at least once before activation.
if (!reset) {
return;
}
// Make active.
active = true;
body.setEnabled(true);
}
/**
* Gets the boundary of the widget, should be used as a way to detect overlapping widgets.
*
* @return The four corners x,y coordinates.
*/
public Vector2f[] getBoundary() {
Box box = (Box) body.getShape();
Vector2f[] bounds = new Vector2f[4];
bounds[0] = new Vector2f(position.x, position.y);
bounds[1] = new Vector2f(position.x + WIDTH, position.y);
bounds[2] = new Vector2f(position.x + WIDTH, position.y + HEIGHT);
bounds[3] = new Vector2f(position.x, position.y + HEIGHT);
return bounds;
}
/**
* Draws the widget.
*
* @param g The object that draws things.
*/
public void draw(Graphics2D screen) {
// Animate!
if (System.nanoTime() - timestamp >= CENTISECOND * 50) {
timestamp = System.nanoTime();
if (image == frames.get(0)) {
image = frames.get(1);
} else {
image = frames.get(0);
}
}
ROVector2f position = body.getPosition();
float angle = body.getRotation();
boolean hflip = false;
boolean vflip = false;
if (currentDirection == Direction.WEST) {
hflip = false;
} else if (currentDirection == Direction.EAST) {
hflip = true;
} else if (currentDirection == Direction.NORTH) {
angle += Math.PI / 2;
vflip = false;
} else if (currentDirection == Direction.SOUTH) {
angle += Math.PI / 2;
vflip = true;
}
drawImage(
position.getX(),
position.getY(),
getWidth(),
getHeight(),
angle,
hflip,
vflip,
image,
screen);
}
/**
* Retrieves the height of the widget based on the specified boundary.
*
* @return The height of the widget (based on the boundary).
*/
private float getHeight() {
return ((Box) body.getShape()).getSize().getY();
}
/**
* Retrieves the width of the widget based on the specified boundary.
*
* @return The width of the widget (based on the boundary).
*/
private float getWidth() {
return ((Box) body.getShape()).getSize().getX();
}
/** Resets the widget to start state. */
public void resetWidget() {
// Reset has been made, so we CAN activate this later.
reset = true;
// Make inactive
active = false;
// Not collided.
collided = false;
bounces = 0;
currentDirection = direction;
image = frames.get(0);
body.setEnabled(false);
// Move to initial position.
body.set(shape, MASS);
body.setPosition(position.x + WIDTH / 2, position.y + HEIGHT / 2);
// Make sure the gameplay didn't mess with any initial properties.
body.setCanRest(true);
body.setDamping(0.0f);
body.setFriction(0.01f);
body.setGravityEffected(false);
body.setIsResting(true);
body.setMoveable(true);
body.setRestitution(1.5f);
body.setRotatable(true);
body.setRotation(0.0f);
body.setRotDamping(0.0f);
body.setMaxVelocity(50f, 50f);
body.setForce(-body.getForce().getX(), -body.getForce().getY());
if (currentDirection == Direction.WEST) {
body.setForce(-MOVEMENT_SPEED, 0);
} else if (currentDirection == Direction.EAST) {
body.setForce(MOVEMENT_SPEED, 0);
}
if (currentDirection == Direction.NORTH) {
body.setForce(0, -MOVEMENT_SPEED);
} else if (currentDirection == Direction.SOUTH) {
body.setForce(0, MOVEMENT_SPEED);
}
body.adjustVelocity(new Vector2f(-body.getVelocity().getX(), -body.getVelocity().getY()));
body.adjustAngularVelocity(-body.getAngularVelocity());
}
/**
* Get the position of the widget.
*
* @return The x,y coordinates within the container.
*/
public Vector2f getPosition() {
return new Vector2f(body.getPosition());
}
/**
* Set the position of the widget.
*
* @param f The x,y coordinates within the container.
*/
public void setPosition(Vector2f f) {
body.setPosition(f.x + WIDTH / 2, f.y + HEIGHT / 2);
position = f;
}
