// reappear at given position
public void blink(float x, float y) {
if (System.currentTimeMillis() - lastBlinkTime < blinkThreshold && y < surfaceY - getHeight()) {
setPosition(x, y);
currentSprite = 0;
ninjaState = NinjaState.Jump;
BlinkView.getSoundManager().playSound("appear");
}
}
// disappear on press of button
public void blink(NinjaDirection direction) {
if (ninjaState != NinjaState.Blink && currentBlinks > 0) {
ninjaState = NinjaState.Blink;
lastBlinkTime = System.currentTimeMillis();
ninjaDirection = direction;
BlinkView.getSoundManager().playSound("blink");
if (direction == NinjaDirection.Right) {
ninjaView = NinjaView.Right;
} else if (direction == NinjaDirection.Left) {
ninjaView = NinjaView.Left;
}
currentBlinks--;
tobeRecharged++;
if (!isNinjaRecharging() && tobeRecharged > 0) {
elapsedTimeSinceStart = 0;
}
}
}
// overrided methods to control game object
@Override
public void update(long fps, long deltaTimeInMS) {
// recharging blinks
elapsedTimeSinceStart += deltaTimeInMS;
if (elapsedTimeSinceStart > blinkRechargeTime) {
if (currentBlinks < maxBlinks && tobeRecharged > 0) {
currentBlinks++;
tobeRecharged--;
if (tobeRecharged > 0) {
elapsedTimeSinceStart = 0;
}
}
}
// ninja is jumping but direction key is pressed
// so run after landing on ground
if (runAfterLanding && isNinjaOnSurface()) {
ninjaState = NinjaState.Run;
runAfterLanding = false;
}
PointF loc = getPosition();
// check collision with left wall
if (loc.x < 0.0f) {
if (ninjaState == NinjaState.Run) {
if (ninjaDirection == NinjaDirection.Left) {
ninjaState = NinjaState.Idle;
} else if (ninjaDirection == NinjaDirection.Right) {
ninjaState = NinjaState.Run;
}
}
if (ninjaState == NinjaState.Jump || ninjaState == NinjaState.Blink) {
ninjaState = NinjaState.Jump;
jumpVelocityY = 0f;
ninjaDirection = NinjaDirection.Up;
}
loc.x = 2.0f;
}
// check collision with right wall
if (loc.x + getLength() > screenX) {
if (ninjaState == NinjaState.Run) {
if (ninjaDirection == NinjaDirection.Right) {
ninjaState = NinjaState.Idle;
} else if (ninjaDirection == NinjaDirection.Left) {
ninjaState = NinjaState.Run;
}
}
if (ninjaState == NinjaState.Jump || ninjaState == NinjaState.Blink) {
ninjaState = NinjaState.Jump;
jumpVelocityY = 0f;
ninjaDirection = NinjaDirection.Up;
}
loc.x = screenX - getLength() - 2;
}
// set new location if ninja is running
if (ninjaState == NinjaState.Run && ninjaDirection == NinjaDirection.Right) {
loc.x = loc.x + ninjaVelocityX / fps;
}
if (ninjaState == NinjaState.Run && ninjaDirection == NinjaDirection.Left) {
loc.x = loc.x - ninjaVelocityX / fps;
}
// make ninja jump
if (ninjaState == NinjaState.Jump) {
float deltaTime = deltaTimeInMS / 1000.0f;
jumpVelocityY += (gravity * deltaTime / 2);
loc.y += jumpVelocityY * deltaTime;
jumpVelocityY += (gravity * deltaTime / 2);
if (ninjaDirection == NinjaDirection.Right) {
loc.x = loc.x + jumpVelocityX / fps;
}
if (ninjaDirection == NinjaDirection.Left) {
loc.x = loc.x - jumpVelocityX / fps;
}
if (loc.y > surfaceY - getHeight()) {
loc.y = surfaceY - getHeight();
jumpVelocityY = 0;
ninjaState = NinjaState.Idle;
loc.y = surfaceY - getHeight();
}
}
// make ninja slide
if (ninjaState == NinjaState.Slide) {
if (ninjaDirection == NinjaDirection.Right) {
loc.x = loc.x + slideVelocity / fps;
slideVelocity -= friction;
}
if (ninjaDirection == NinjaDirection.Left) {
loc.x = loc.x - slideVelocity / fps;
slideVelocity -= friction;
}
if (slideVelocity < 0) {
slideVelocity = 0;
}
}
// if blinked for a time period above threshold, reappear at a random position
if (ninjaState == NinjaState.Blink) {
if (System.currentTimeMillis() - lastBlinkTime > blinkThreshold) {
int lowx = (int) getLength() + 5;
int highx = (int) (screenX - getLength() - 5);
loc.x = lowx + generator.nextInt(highx - lowx);
int lowy = (int) getHeight();
int highy = (int) (surfaceY - getHeight());
loc.y = lowy + generator.nextInt(highy - lowy);
ninjaState = NinjaState.Jump;
BlinkView.getSoundManager().playSound("appear");
}
}
if (ninjaState == NinjaState.Dead) {
if (loc.y < surfaceY - getHeight()) {
loc.y += jumpVelocityY / fps;
jumpVelocityY += gravity;
}
}
// update location of ninja
setPosition(loc.x, loc.y);
}
