private void SpawnBall() {
mBall.WorldPosition(new mw2_Vector2());
int choose = new Random().nextInt(mBallSpawnAngles.length);
mBallVelocity =
new mw2_Vector2(
(float) Math.cos(mBallSpawnAngles[choose] * Math.PI / 180),
(float) Math.sin(mBallSpawnAngles[choose] * Math.PI / 180));
mBallVelocity.x *= mBallSpawnDirection;
if (mBallSpawnDirection == -1) {
mBall_fill.mColor = mFillColor2;
mBall_line.mColor = mLineColor2;
} else {
mBall_fill.mColor = mFillColor1;
mBall_line.mColor = mLineColor1;
}
mIsBallLost = false;
}
@Override
public void Update(float deltaTime) {
// player control
if (mw2_Input.GetKey(mw2_Input.Key.W)) {
mPaddle1.TranslateWorld(new mw2_Vector2(0, -mPaddleSpeed * deltaTime));
}
if (mw2_Input.GetKey(mw2_Input.Key.S)) {
mPaddle1.TranslateWorld(new mw2_Vector2(0, mPaddleSpeed * deltaTime));
}
if (mw2_Input.GetKey(mw2_Input.Key.ARROW_UP)) {
mPaddle2.TranslateWorld(new mw2_Vector2(0, -mPaddleSpeed * deltaTime));
}
if (mw2_Input.GetKey(mw2_Input.Key.ARROW_DOWN)) {
mPaddle2.TranslateWorld(new mw2_Vector2(0, mPaddleSpeed * deltaTime));
}
// clamp paddle position
mw2_Vector2 p1 = mPaddle1.WorldPosition();
p1.y = Clamp(p1.y, -mTopDownMargin + mPaddleSize.y / 2, mTopDownMargin - mPaddleSize.y / 2);
mPaddle1.WorldPosition(p1);
mw2_Vector2 p2 = mPaddle2.WorldPosition();
p2.y = Clamp(p2.y, -mTopDownMargin + mPaddleSize.y / 2, mTopDownMargin - mPaddleSize.y / 2);
mPaddle2.WorldPosition(p2);
// ball position update
mBall.TranslateWorld(mBallVelocity.Mul(deltaTime * mBallSpeed));
// check top-bottom margins
if (mBall.WorldPosition().y + mBallRadius >= mTopDownMargin) {
mBallVelocity.y = -Math.abs(mBallVelocity.y);
mBoundarySound.PlayOnce();
}
if (mBall.WorldPosition().y - mBallRadius <= -mTopDownMargin) {
mBallVelocity.y = Math.abs(mBallVelocity.y);
mBoundarySound.PlayOnce();
}
// check paddle collision
if (!mIsBallLost
&& mBall.WorldPosition().x - mBallRadius
<= mPaddle1.WorldPosition().x + mPaddleSize.x / 2) {
if (mPaddle1.WorldPosition().y + mPaddleSize.y / 2 >= mBall.WorldPosition().y
&& mBall.WorldPosition().y >= mPaddle1.WorldPosition().y - mPaddleSize.y / 2) {
// ball hits paddle 1
mBallVelocity.x = Math.abs(mBallVelocity.x);
mPaddleSound.PlayOnce();
mBall_fill.mColor = mFillColor1;
mBall_line.mColor = mLineColor1;
} else if (mBall.WorldPosition().x < mPaddle1.WorldPosition().x + mPaddleSize.x / 2) {
mIsBallLost = true;
mLostSound.PlayOnce();
}
}
if (!mIsBallLost
&& mBall.WorldPosition().x + mBallRadius
>= mPaddle2.WorldPosition().x - mPaddleSize.x / 2) {
if (mPaddle2.WorldPosition().y + mPaddleSize.y / 2 >= mBall.WorldPosition().y
&& mBall.WorldPosition().y >= mPaddle2.WorldPosition().y - mPaddleSize.y / 2) {
// ball hits paddle 2
mBallVelocity.x = -Math.abs(mBallVelocity.x);
mPaddleSound.PlayOnce();
mBall_fill.mColor = mFillColor2;
mBall_line.mColor = mLineColor2;
} else if (mBall.WorldPosition().x > mPaddle2.WorldPosition().x - mPaddleSize.x / 2) {
mIsBallLost = true;
mLostSound.PlayOnce();
}
}
// check left-right boundaries
if (mBall.WorldPosition().x + mBallRadius >= mLeftRightMargin) {
mBallSpawnDirection = -1;
mScore1 += 1;
SpawnBall();
}
if (mBall.WorldPosition().x - mBallRadius <= -mLeftRightMargin) {
mBallSpawnDirection = 1;
mScore2 += 1;
SpawnBall();
}
// update scores
mScoreText1.mText = this.PrettyScore(mScore1);
mScoreText2.mText = this.PrettyScore(mScore2);
// check game over
if (mScore1 == mWinCondition) {
mw2_Globals.SetString("winner", "1");
mw2_Application.LoadScene(new EndScene(), new EndManager());
}
if (mScore2 == mWinCondition) {
mw2_Globals.SetString("winner", "2");
mw2_Application.LoadScene(new EndScene(), new EndManager());
}
// check for R-restart or ESC-exit
if (mw2_Input.GetKeyOnce(mw2_Input.Key.R)) {
mw2_Application.LoadScene(new StartScene(), new StartManager());
}
if (mw2_Input.GetKeyOnce(mw2_Input.Key.ESC)) {
mw2_Application.Exit();
}
}