// Handles all ball-ball collisions
void handleBallBallCollisions() {
for (int i = 0; i < _scene.numChildren(); i++)
for (int j = 0; j < _scene.numChildren(); j++) {
if (i == j) continue;
Object3d b1 = _scene.getChildAt(i);
Object3d b2 = _scene.getChildAt(j);
// if (b1 == _room || b2 == _room)
// continue;
if (testBallBallCollision(b1, b2)) {
// Make the balls reflect off of each other
Number3d displacement = Number3d.subtract(b1.position(), b2.position());
displacement.normalize();
float objDot = Number3d.dot(b1.velocity(), displacement);
displacement.multiply(objDot);
displacement.multiply(2f);
b1.velocity().subtract(displacement);
displacement = Number3d.subtract(b1.position(), b2.position());
displacement.normalize();
objDot = Number3d.dot(b2.velocity(), displacement);
displacement.multiply(objDot);
displacement.multiply(2f);
b2.velocity().subtract(displacement);
}
}
}
@Override
public void onTouchEvent(MotionEvent e) {
float x = e.getX();
float y = e.getY();
switch (e.getAction()) {
case MotionEvent.ACTION_UP:
x = x * .001f;
y = y * .001f;
for (int i = 0; i < _scene.numChildren(); i++) {
Object3d obj = _scene.getChildAt(i);
if (obj == _up || obj == _down || obj == _east || obj == _west) continue;
// TODO: make pressure equal to distance from touch
obj.velocity().z = -(e.getPressure() * 100);
obj.velocity().z = -(e.getPressure() * 100);
}
break;
case MotionEvent.ACTION_MOVE:
float dx = x - mPreviousX;
float dy = y - mPreviousY;
for (int i = 0; i < _scene.numChildren(); i++) {
Object3d obj = _scene.getChildAt(i);
if (obj == _up || obj == _down || obj == _east || obj == _west) continue;
obj.rotation().x += dx * Object3d.TOUCH_SCALE_FACTOR;
obj.rotation().y += dy * Object3d.TOUCH_SCALE_FACTOR;
}
break;
}
mPreviousX = x;
mPreviousY = y;
}
public void onDrawFrame(GL10 gl) {
double time = System.currentTimeMillis();
double elapsed = time - _lastDraw;
_lastDraw = time;
if (elapsed > 1000) elapsed = 60;
elapsed = elapsed / 1000;
float pitch = _sensor.getPitch();
float roll = _sensor.getRoll();
for (int i = 0; i < _scene.numChildren(); i++) {
Object3d obj = _scene.getChildAt(i);
if (obj != _down && obj != _up && obj != _east && obj != _west) {
updateObject(obj, elapsed, _sensor.getAccelerometer(), roll, pitch);
}
}
_renderer.onDrawFrame(gl);
}