// 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:
//calculate information about the hill
HILL_HALF_WIDTH = HILL_UNSCALED_HALF_WIDTH * theHill.transform.localScale.x;
Restart(); //needed to avoid a race condition with the ball's Start() function
break;
case GameStates.GS_USER_INPUT:
//increase or decreate the ballista's elevation by a rate of 10 degrees per second
if (Input.GetKey(KeyCode.UpArrow))
{
theBallista.localElevationAngle = Mathf.Min(90.0f, theBallista.localElevationAngle + 10.0f * Time.deltaTime);
}
if (Input.GetKey(KeyCode.DownArrow))
{
theBallista.localElevationAngle = Mathf.Max(0.0f, theBallista.localElevationAngle - 10.0f * Time.deltaTime);
}
//increase or decreate the ballista's angle by a rate of 10 degrees per second
if (Input.GetKey(KeyCode.RightArrow))
{
theBallista.localRotationAngle = Mathf.Min(60.0f, theBallista.localRotationAngle + 10.0f * Time.deltaTime);
}
if (Input.GetKey(KeyCode.LeftArrow))
{
theBallista.localRotationAngle = Mathf.Max(-60.0f, theBallista.localRotationAngle - 10.0f * Time.deltaTime);
}
//increase or decreate the ballista's displacement by a rate of 50 centimeters per second
if (Input.GetKey(KeyCode.RightShift) || Input.GetKey(KeyCode.LeftShift))
{
theBallista.displacement = Mathf.Min(2.0f, theBallista.displacement + 0.5f * Time.deltaTime);
}
if (Input.GetKey(KeyCode.RightControl) || Input.GetKey(KeyCode.LeftControl))
{
theBallista.displacement = Mathf.Max(0.0f, theBallista.displacement - 0.5f * Time.deltaTime);
}
theBall.SimulateFlight(theBallista);
//check for game start
if (Input.GetKeyDown(KeyCode.Space))
{
Vector3 spawnPos = new Vector3(0, 0, 0);
theBallista.GetSpawnBallPosition(out spawnPos);
theBall.ApplyMovement(spawnPos);
theBall.LaunchBall(theBallista.localElevationAngle, theBallista.localRotationAngle);
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;
}
}
public void SimulateFlight(BallistaScript theBallista)
{
Vector3 startPos = new Vector3(0, 0, 0);
Vector3 endPos = new Vector3(0, 0, 0);
Vector3 moveDelta = new Vector3(0, 0, 0);
Vector3 simVelocity = new Vector3(0, 0, 0);
Vector3 hitSurfaceNormal = new Vector3(0, 1, 0);
bool hitTarget = false;
bool hitGround = false;
int sanity = 0;
if (theReticule == null)
{
return;
}
if (theBallista != null)
{
theBallista.GetSpawnBallPosition(out startPos);
GetLaunchVelocity(theBallista.localElevationAngle, theBallista.localRotationAngle, out simVelocity);
//print("StartPos = " + startPos + " simVelocity = " + simVelocity);
//simulate the flight in 1/5 second increments
while (!hitTarget && !hitGround)
{
DoMotion(startPos, 0.1f, ref simVelocity, out moveDelta);
DoCollisionDetection(startPos, moveDelta, out endPos,
out hitSurfaceNormal, out hitTarget, out hitGround);
//set our start position to be equal to the end position and try again
startPos = endPos;
//print("simVelocity = " + simVelocity);
sanity++;
if (sanity > 1000)
{
break;
}
}
}
if (hitTarget)
{
theReticule.renderer.material = greenReticuleMaterial;
}
else
{
theReticule.renderer.material = redReticuleMaterial;
}
//print("hitTarget - " + hitTarget + " endPos = " + endPos + " sanity = " + sanity);
//where should the reticule go, and what direction should it face?
theReticule.newPos = endPos;
theReticule.newOrientationInEulerAngles = Vector3.zero;
float angleFromVertical = Vector3.Angle(hitSurfaceNormal, Vector3.up);
if ((angleFromVertical > 1.0f) && (angleFromVertical < 45.0f))
{
// bit of a hack... I know the orientation of the hill,
// so if the reticule is hitting anything other than flat ground,
// set it to the orientation of the hill
theReticule.newOrientationInEulerAngles = theGameManager.theHill.transform.eulerAngles;
}
}
public void SimulateFlight(BallistaScript theBallista)
{
Vector3 startPos = new Vector3(0,0,0);
Vector3 endPos = new Vector3(0,0,0);
Vector3 moveDelta = new Vector3(0,0,0);
Vector3 simVelocity = new Vector3(0,0,0);
Vector3 hitSurfaceNormal = new Vector3(0,1,0);
bool hitTarget = false;
bool hitGround = false;
int sanity = 0;
if (theReticule == null)
{
return;
}
if (theBallista != null)
{
theBallista.GetSpawnBallPosition(out startPos);
GetLaunchVelocity(theBallista.localElevationAngle, theBallista.localRotationAngle, out simVelocity);
//print("StartPos = " + startPos + " simVelocity = " + simVelocity);
//simulate the flight in 1/5 second increments
while (!hitTarget && !hitGround)
{
DoMotion(startPos, 0.1f, ref simVelocity, out moveDelta);
DoCollisionDetection(startPos, moveDelta, out endPos,
out hitSurfaceNormal, out hitTarget, out hitGround);
//set our start position to be equal to the end position and try again
startPos = endPos;
//print("simVelocity = " + simVelocity);
sanity++;
if (sanity > 1000)
{
break;
}
}
}
if (hitTarget)
{
theReticule.renderer.material = greenReticuleMaterial;
}
else
{
theReticule.renderer.material = redReticuleMaterial;
}
//print("hitTarget - " + hitTarget + " endPos = " + endPos + " sanity = " + sanity);
//where should the reticule go, and what direction should it face?
theReticule.newPos = endPos;
theReticule.newOrientationInEulerAngles = Vector3.zero;
float angleFromVertical = Vector3.Angle(hitSurfaceNormal, Vector3.up);
if ((angleFromVertical > 1.0f) && (angleFromVertical < 45.0f))
{
// bit of a hack... I know the orientation of the hill,
// so if the reticule is hitting anything other than flat ground,
// set it to the orientation of the hill
theReticule.newOrientationInEulerAngles = theGameManager.theHill.transform.eulerAngles;
}
}