/**
* Calculates cannon bitmap rotation
*
* @param touch_x x coordinates of the touch event
* @param touch_y y coordinates of ther touch event
* @param cannon cannon object
* @return new rotation value
*/
public static float CannonRotationByTouch(int touch_x, int touch_y, Cannon cannon) {
float result = cannon.GetRotation();
if (CheckIfTouchIsInTheZone(touch_x, touch_y, cannon)) {
if (CheckIsOnLeftSideScreen(touch_x)) {
int Opposite = touch_x - cannon.GetX();
int Adjacent = cannon.GetY() - touch_y;
double angle = Math.atan2(Opposite, Adjacent);
result = (float) Math.toDegrees(angle);
} else {
int Opposite = cannon.GetX() - touch_x;
int Adjacent = cannon.GetY() - touch_y;
double angle = Math.atan2(Opposite, Adjacent);
result = ANGLE_360 - (float) Math.toDegrees(angle);
}
}
return result;
}
/**
* Determines whether the touch is in the relevant zone on the screen
*
* @param touch_x x coordinate of the touch event
* @param touch_y y coordinate of the touch event
* @param cannon Cannon object
* @return true if the touch is in the relevant zone
*/
public static boolean CheckIfTouchIsInTheZone(int touch_x, int touch_y, Cannon cannon) {
return touch_y + TOLERANCE < cannon.GetY();
}