/// <summary>
/// Draws a guide line which shows the course of the shot
/// </summary>
public void DrawGuide()
{
bool guideDone = false;
guideProjectile.ProjectilePosition = Catapult.ProjectileStartPosition;
guideProjectile.Fire(Catapult.ShotVelocity, Catapult.ShotVelocity);
while (guideDone == false)
{
guideProjectile.UpdateProjectileFlightData(0.1f, Catapult.Wind,
Catapult.Gravity, out guideDone);
spriteBatch.Draw(guideDot, guideProjectile.ProjectilePosition,
Color.Blue);
}
}
/// <summary>
/// Draws a guide line which shows the course of the shot
/// </summary>
public void DrawGuide()
{
guideProjectile.ProjectilePosition = Catapult.ProjectileStartPosition;
Single direction = playerSide == PlayerSide.Left ? 1 : -1;
guideProjectile.Fire(Catapult.ShotVelocity * (float)Math.Cos(Catapult.ShotAngle),
Catapult.ShotVelocity * (float)Math.Sin(Catapult.ShotAngle));
while (guideProjectile.State == ProjectileState.InFlight)
{
guideProjectile.UpdateProjectileFlightData(0.1f,
Catapult.Wind,
Catapult.Gravity);
spriteBatch.Draw(guideDot, guideProjectile.ProjectilePosition, null,
playerSide == PlayerSide.Left ? Color.Blue : Color.Red, 0f,
Vector2.Zero, 1f, spriteEffect, 0);
}
}
public override void Update(GameTime gameTime)
{
bool isGroundHit;
bool startStall;
CatapultState postUpdateStateChange = 0;
if (gameTime == null)
{
throw new ArgumentNullException("gameTime");
}
// The catapult is inactive, so there is nothing to update
if (!IsActive)
{
base.Update(gameTime);
return;
}
switch (currentState)
{
case CatapultState.Idle:
// Nothing to do
break;
case CatapultState.Aiming:
if (lastUpdateState != CatapultState.Aiming)
{
AudioManager.PlaySound("ropeStretch", true);
AnimationRunning = true;
if (isAI == true)
{
animations["Aim"].PlayFromFrameIndex(0);
stallUpdateCycles = 20;
startStall = false;
}
}
// Progress Aiming "animation"
if (isAI == false)
{
UpdateAimAccordingToShotStrength();
}
else
{
animations["Aim"].Update();
startStall = AimReachedShotStrength();
currentState = (startStall) ?
CatapultState.Stalling : CatapultState.Aiming;
}
break;
case CatapultState.Stalling:
if (stallUpdateCycles-- <= 0)
{
// We've finished stalling, fire the projectile
Fire(ShotVelocity, ShotAngle);
postUpdateStateChange = CatapultState.Firing;
}
break;
case CatapultState.Firing:
// Progress Fire animation
if (lastUpdateState != CatapultState.Firing)
{
AudioManager.StopSound("ropeStretch");
AudioManager.PlaySound("catapultFire");
StartFiringFromLastAimPosition();
}
animations["Fire"].Update();
// If in the "split" point of the animation start
// projectile fire sequence
if (animations["Fire"].FrameIndex == splitFrames["Fire"])
{
postUpdateStateChange =
currentState | CatapultState.ProjectileFlying;
projectile.ProjectilePosition =
projectile.ProjectileStartPosition;
}
break;
case CatapultState.Firing | CatapultState.ProjectileFlying:
// Progress Fire animation
animations["Fire"].Update();
// Update projectile velocity & position in flight
projectile.UpdateProjectileFlightData(gameTime, wind,
gravity, out isGroundHit);
if (isGroundHit)
{
// Start hit sequence
postUpdateStateChange = CatapultState.ProjectileHit;
animations["fireMiss"].PlayFromFrameIndex(0);
}
break;
case CatapultState.ProjectileFlying:
// Update projectile velocity & position in flight
projectile.UpdateProjectileFlightData(gameTime, wind,
gravity, out isGroundHit);
if (isGroundHit)
{
// Start hit sequence
postUpdateStateChange = CatapultState.ProjectileHit;
animations["fireMiss"].PlayFromFrameIndex(0);
}
break;
case CatapultState.ProjectileHit:
// Check hit on ground impact
if (!CheckHit())
{
if (lastUpdateState != CatapultState.ProjectileHit)
{
VibrateController.Default.Start(
TimeSpan.FromMilliseconds(100));
// Play hit sound only on a missed hit,
// a direct hit will trigger the explosion sound
AudioManager.PlaySound("boulderHit");
}
// Hit animation finished playing
if (animations["fireMiss"].IsActive == false)
{
postUpdateStateChange = CatapultState.Reset;
}
animations["fireMiss"].Update();
}
else
{
// Catapult hit - start longer vibration on any catapult hit
// Remember that the call to "CheckHit" updates the catapult's
// state to "Hit"
VibrateController.Default.Start(
TimeSpan.FromMilliseconds(500));
}
break;
case CatapultState.Hit:
// Progress hit animation
if ((animations["Destroyed"].IsActive == false) &&
(animations["hitSmoke"].IsActive == false))
{
if (enemy.Score >= winScore)
{
GameOver = true;
break;
}
postUpdateStateChange = CatapultState.Reset;
}
animations["Destroyed"].Update();
animations["hitSmoke"].Update();
break;
case CatapultState.Reset:
AnimationRunning = false;
break;
default:
break;
}
lastUpdateState = currentState;
if (postUpdateStateChange != 0)
{
currentState = postUpdateStateChange;
}
base.Update(gameTime);
}
public override void Update(GameTime gameTime)
{
bool isGroundHit;
CatapultState postUpdateStateChange = 0;
if (gameTime == null)
{
throw new ArgumentNullException("gameTime");
}
if (!IsActive)
{
base.Update(gameTime);
return;
}
switch (currentState)
{
case CatapultState.Idle:
// Nothing to do
break;
case CatapultState.Aiming:
if (lastUpdateState != CatapultState.Aiming)
{
// TODO: Play sound
AnimationRunning = true;
if (isAI == true)
{
// TODO: Play animation
stallUpdateCycles = 20;
}
}
// Progress Aiming "animation"
if (isAI == false)
{
// TODO: Play animation
}
else
{
// TODO: Play animation
// TODO: take �startStall� into account
currentState = (true) ?
CatapultState.Stalling : CatapultState.Aiming;
}
break;
case CatapultState.Stalling:
if (stallUpdateCycles-- <= 0)
{
// We've finished stalling, fire the projectile
Fire(ShotVelocity);
postUpdateStateChange = CatapultState.Firing;
}
break;
case CatapultState.Firing:
// Progress Fire animation
if (lastUpdateState != CatapultState.Firing)
{
// TODO: Play Sounds and animate
}
// TODO: Play animation
// TODO: Fire at the appropriate animation frame
postUpdateStateChange = currentState |
CatapultState.ProjectileFlying;
projectile.ProjectilePosition =
projectile.ProjectileStartPosition;
break;
case CatapultState.Firing | CatapultState.ProjectileFlying:
// Progress Fire animation
// TODO: Play animation
// Update projectile velocity & position in flight
projectile.UpdateProjectileFlightData(gameTime, wind, gravity,
out isGroundHit);
if (isGroundHit)
{
// Start hit sequence
postUpdateStateChange = CatapultState.ProjectileHit;
// TODO: Play animation
}
break;
case CatapultState.ProjectileFlying:
// Update projectile velocity & position in flight
projectile.UpdateProjectileFlightData(gameTime, wind, gravity,
out isGroundHit);
if (isGroundHit)
{
// Start hit sequence
postUpdateStateChange = CatapultState.ProjectileHit;
// TODO: Play animation
}
break;
case CatapultState.ProjectileHit:
// Check hit on ground impact
if (!CheckHit())
{
if (lastUpdateState != CatapultState.ProjectileHit)
{
// TODO: Vibrate device and play sound
}
// TODO: Relate to animation when changing state
postUpdateStateChange = CatapultState.Reset;
// TODO: Update animation
}
else
{
// TODO: Vibrate the device
}
break;
case CatapultState.Hit:
// TODO: only check score when animation is finished
if (enemy.Score >= winScore)
{
GameOver = true;
break;
}
postUpdateStateChange = CatapultState.Reset;
// TODO: Update animation
break;
case CatapultState.Reset:
AnimationRunning = false;
break;
default:
break;
}
lastUpdateState = currentState;
if (postUpdateStateChange != 0)
{
currentState = postUpdateStateChange;
}
base.Update(gameTime);
}
