// Update is called once per frame
void Update()
{
if (theBall == null)
{
//hint: if your game UI never displays, you might want to check this condition somehow...
return;
}
switch (theGameState)
{
case GameStates.GS_INITIALIZATION:
Restart(); //needed to avoid a race condition with the ball's Start() function
break;
case GameStates.GS_USER_INPUT:
//increase or decrease the launch velocity at a rate of 2 meters per second
if (Input.GetKey(KeyCode.UpArrow))
{
//Time.deltaTime tells me how much time has passed in seconds since the last frame.
theBall.launchSpeed = Mathf.Min(MAX_LAUNCH_VEL, theBall.launchSpeed + 2.0f * Time.deltaTime);
}
if (Input.GetKey(KeyCode.DownArrow))
{
theBall.launchSpeed = Mathf.Max(0.0f, theBall.launchSpeed - 2.0f * Time.deltaTime);
}
//increase or decreate the cannon's angle by a rate of 10 degrees per second
if (Input.GetKey(KeyCode.LeftArrow))
{
theCannon.localPivotAngle = Mathf.Min(90.0f, theCannon.localPivotAngle + 10.0f * Time.deltaTime);
}
if (Input.GetKey(KeyCode.RightArrow))
{
theCannon.localPivotAngle = Mathf.Max(0.0f, theCannon.localPivotAngle - 10.0f * Time.deltaTime);
}
//check for game start and spawn the ball
if (Input.GetKeyDown(KeyCode.Space))
{
theCannon.SpawnBall();
theGameState = GameStates.GS_GAME_IN_PROGRESS;
}
break;
case GameStates.GS_GAME_IN_PROGRESS:
break;
case GameStates.GS_ENDGAME_VICTORY:
//check for new game
if (Input.GetKeyDown(KeyCode.Space))
{
Restart();
}
break;
case GameStates.GS_ENDGAME_DEFEAT:
//check for new game
if (Input.GetKeyDown(KeyCode.Space))
{
Restart();
}
break;
}
}
