private static Single CalculateRotation(Single rotation, Single gamePadLeftX, Single gamePadLeftY, Boolean turnLeft, Boolean turnRight)
{
if (gamePadLeftX >= TURN_AXIS_DEADBAND || gamePadLeftX <= -TURN_AXIS_DEADBAND || gamePadLeftY >= TURN_AXIS_DEADBAND || gamePadLeftY <= -TURN_AXIS_DEADBAND)
{
Single desiredRotation = FloatMathHelper.Atan2(gamePadLeftY, gamePadLeftX);
if (Math.Abs(rotation - desiredRotation) < TOP_TURN_SPEED)
{
rotation = desiredRotation;
}
else
{
if (FloatMathHelper.CounterClockwiseAngularDistance(rotation, desiredRotation) < FloatMathHelper.ClockwiseAngularDistance(rotation, desiredRotation))
{
rotation -= TOP_TURN_SPEED;
}
else
{
rotation += TOP_TURN_SPEED;
}
}
}
else
{
if (turnLeft)
{
rotation -= TOP_TURN_SPEED * 0.5f;
}
else if (turnRight)
{
rotation += TOP_TURN_SPEED * 0.5f;
}
}
return(MathHelper.WrapAngle(rotation));
}
public Collectable CreateNewShotgunAmmoCollectable()
{
Collectable shotgunAmmoCollectable = new Collectable(Game,
RandomCollectableSpawnLocation(),
FloatMathHelper.Max(MINIMUM_SHOTGUN_AMMO_COLLECTABLE_LIFETIME, RandomHelper.NextRandomDouble() * MAXIMUM_SHOTGUN_AMMO_COLLECTABLE_LIFETIME),
CollectableEntityType.ShotgunAmmo);
this.AddCollectable(shotgunAmmoCollectable);
return(shotgunAmmoCollectable);
}
public Collectable CreateNewEnergyCollectable()
{
Collectable energyCollectable = new Collectable(Game,
RandomCollectableSpawnLocation(),
FloatMathHelper.Max(MINIMUM_ENERGY_COLLECTABLE_LIFETIME, RandomHelper.NextRandomDouble() * MAXIMUM_ENERGY_COLLECTABLE_LIFETIME),
CollectableEntityType.Energy);
this.AddCollectable(energyCollectable);
return(energyCollectable);
}
public Collectable CreateNewPistolAmmoCollectable()
{
Collectable pistolAmmoCollectable = new Collectable(Game,
RandomCollectableSpawnLocation(),
FloatMathHelper.Max(MINIMUM_PISTOL_AMMO_COLLECTABLE_LIFETIME, RandomHelper.NextRandomDouble() * MAXIMUM_PISTOL_AMMO_COLLECTABLE_LIFETIME),
CollectableEntityType.PistolAmmo);
this.AddCollectable(pistolAmmoCollectable);
return(pistolAmmoCollectable);
}
public Collectable CreateNewGasolineCollectable()
{
Collectable gasolineCollectable = new Collectable(Game,
RandomCollectableSpawnLocation(),
FloatMathHelper.Max(MINIMUM_GASOLINE_COLLECTABLE_LIFETIME, RandomHelper.NextRandomDouble() * MAXIMUM_GASOLINE_COLLECTABLE_LIFETIME),
CollectableEntityType.Gasoline);
this.AddCollectable(gasolineCollectable);
return(gasolineCollectable);
}
public Collectable CreateNewHealthCollectable()
{
Collectable healthCollectable = new Collectable(Game,
RandomCollectableSpawnLocation(),
FloatMathHelper.Max(MINIMUM_HEALTH_COLLECTABLE_LIFETIME, RandomHelper.NextRandomDouble() * MAXIMUM_HEALTH_COLLECTABLE_LIFETIME),
CollectableEntityType.Health);
this.AddCollectable(healthCollectable);
return(healthCollectable);
}
private static Single CalculateRotation(Single currentRotation, Vector2 rotationVector, Single topTurningSpeed)
{
rotationVector.Normalize();
Single desiredRotation = FloatMathHelper.Atan2(rotationVector.Y, rotationVector.X);
if (Math.Abs(currentRotation - desiredRotation) < topTurningSpeed)
{
currentRotation = desiredRotation;
}
else
{
if (FloatMathHelper.CounterClockwiseAngularDistance(currentRotation, desiredRotation) < FloatMathHelper.ClockwiseAngularDistance(currentRotation, desiredRotation))
{
currentRotation -= topTurningSpeed;
}
else
{
currentRotation += topTurningSpeed;
}
}
return(MathHelper.WrapAngle(currentRotation));
}
/// <summary>
/// Calculate the angular distance from r to R in a clockwise direction
/// </summary>
/// <param name="r">First angle in Radians</param>
/// <param name="R">First angle in Radians</param>
/// <returns>Distance in Radians</returns>
public static Single ClockwiseAngularDistance(Single r, Single R)
{
return(MathHelper.TwoPi - FloatMathHelper.CounterClockwiseAngularDistance(r, R));
}
public void Control(GameTime gameTime, GamePadState gamePadState, KeyboardState keyboardState, MouseState mouseState)
{
// Get Position and Rotation
Vector2 oldPosition = Location.Position;
Vector2 position = oldPosition;
Single oldRotation = Location.Rotation;
Single rotation = oldRotation;
// Get Game Pad State
GameControl gameControl = new GameControl(gamePadState, oldGamePadState, keyboardState, oldKeyboardState, mouseState, oldMouseState);
// Update Weapon Status
CalculateWeaponStatus(gameTime, gameControl);
// Calculate Velocity, Strafe and Rotation
Single velocity = CalculateVelocity(gameControl.MovementControlY, gameControl.MoveForward, gameControl.MoveBackwards);
Single strafe = CalculateStrafe(gameControl.MovementControlX, gameControl.StrafeLeft, gameControl.StrafeRight);
rotation = CalculateRotation(rotation, gameControl.OrientationControlX, gameControl.OrientationControlY, gameControl.turnLeft, gameControl.turnRight);
// Calculate Movement Velocity Vector
Vector2 velocityVector = new Vector2(FloatMathHelper.Cos(rotation), FloatMathHelper.Sin(rotation));
Single strafeRotation = MathHelper.WrapAngle(rotation + MathHelper.PiOver2);
Vector2 strafeVector = new Vector2(FloatMathHelper.Cos(strafeRotation), FloatMathHelper.Sin(strafeRotation));
// Check for running condition
if (gameControl.RunningControl)
{
Single multiplicationFactor = 0.0f;
if (CurrentStamina > (0.2 * MAXIMUM_STAMINA_VALUE))
{
//multiplicationFactor = 1.0f * (CurrentStamina / MAXIMUM_STAMINA_VALUE);
multiplicationFactor = 1.0f;
CurrentStamina -= STAMINA_LOSS_RATE;
}
velocity *= (1.0f + multiplicationFactor);
}
else
{
if (CurrentHealth > (0.2 * MAXIMUM_HEALTH_VALUE))
{
CurrentStamina += (STAMINA_GAIN_RATE * (CurrentHealth / MAXIMUM_HEALTH_VALUE));
}
}
if (CurrentStamina > MAXIMUM_STAMINA_VALUE)
{
CurrentStamina = MAXIMUM_STAMINA_VALUE;
}
// Normalize Vectors and Update Position
velocityVector.Normalize();
strafeVector.Normalize();
position = position + (velocityVector * velocity) + (strafeVector * strafe);
// Update SpriteSpecifier
Location.Position = position;
Location.Rotation = rotation;
// Check for Collisions
if (Game.ZombiesSubsystem.ZombiesCollisionManager.CheckForCollisionsWith(this))
{
Location.Position = oldPosition;
Location.Rotation = oldRotation;
}
// Check for Collections
List <CollectableEntityType> collectedEntities = Game.CollectablesSubsystem.CollectablesCollectionManger.Collect(this);
foreach (CollectableEntityType collectedEntity in collectedEntities)
{
switch (collectedEntity)
{
case CollectableEntityType.Health:
CurrentHealth += HEALTH_COLLECTABLE_HEALTH_VALUES;
Game.HUD.AddMessage("Collected Health.", Color.Blue, false);
Game.Results.CollectablesResults.HealthCollectablesCollected++;
break;
case CollectableEntityType.Gasoline:
Ammunition.CollectGasolineCan();
Game.HUD.AddMessage("Collected Gasoline Can.", Color.Blue, false);
Game.Results.CollectablesResults.GasolineCollectablesCollected++;
break;
case CollectableEntityType.Energy:
//TODO: Implement Enrgy Collectable Action
Game.HUD.AddMessage("Collected Energy.", Color.Blue, false);
Game.Results.CollectablesResults.EnergyCollectablesCollected++;
break;
case CollectableEntityType.PistolAmmo:
Ammunition.CollectPistolClip();
Game.HUD.AddMessage("Collected Pistol Ammo.", Color.Blue, false);
Game.Results.CollectablesResults.PistolAmmoCollectablesCollected++;
break;
case CollectableEntityType.ShotgunAmmo:
Ammunition.CollectShotgunShells(6);
Game.HUD.AddMessage("Collected Shotgun Ammo.", Color.Blue, false);
Game.Results.CollectablesResults.ShotgunAmmoCollectablesCollected++;
break;
default: break;
}
}
// Normalize State Values
if (CurrentHealth > MAXIMUM_HEALTH_VALUE)
{
CurrentHealth = MAXIMUM_HEALTH_VALUE;
}
else if (CurrentHealth < 0.0f)
{
CurrentHealth = 0.0f;
}
if (CurrentStamina > MAXIMUM_STAMINA_VALUE)
{
CurrentStamina = MAXIMUM_STAMINA_VALUE;
}
else if (CurrentStamina < 0.0f)
{
CurrentStamina = 0.0f;
}
// Update Damage Vibration
if (damageVibrationActive)
{
damageVibrationTimer -= gameTime.ElapsedGameTime.TotalSeconds;
if (damageVibrationTimer <= 0.0)
{
damageVibrationActive = false;
GamePad.SetVibration(PlayerIndex.One, 0.0f, 0.0f);
}
else
{
GamePad.SetVibration(PlayerIndex.One, 1.0f, 0.3f);
}
}
else
{
GamePad.SetVibration(PlayerIndex.One, 0.0f, 0.0f);
}
// Update Game Pad State Info
oldGamePadState = gamePadState;
oldKeyboardState = keyboardState;
oldMouseState = mouseState;
}
public override void Update(GameTime gameTime)
{
if (this.Alive)
{
Vector2 homingPosition = this.Game.SurvivorSubsystem.PlayerOneSurvivorSprite.Location.Position;
Vector2 oldPosition = Location.Position;
Single oldRotation = Location.Rotation;
Single currentRotation = Location.Rotation;
Vector2 currentPosition = Location.Position;
Vector2 deltaPosition = homingPosition - currentPosition;
Single rotation = CalculateRotation(currentRotation, deltaPosition, TopTurningSpeed());
Vector2 velocityVector = new Vector2(FloatMathHelper.Cos(rotation), FloatMathHelper.Sin(rotation));
if (Math.Abs(deltaPosition.Length()) > TopMovementSpeed())
{
Single speed = 0.0f;
Single cwAngularDistance = FloatMathHelper.ClockwiseAngularDistance(currentRotation, rotation);
Single ccwAngularDistance = FloatMathHelper.CounterClockwiseAngularDistance(currentRotation, rotation);
Single deltaRotation = MathHelper.Min(cwAngularDistance, ccwAngularDistance);
if (deltaRotation <= TURNING_MOVEMENT_LIMIT)
{
speed = TopMovementSpeed() * ((TURNING_MOVEMENT_LIMIT - deltaRotation) / TURNING_MOVEMENT_LIMIT);
}
Location.Position += (velocityVector * speed);
Location.Rotation = rotation;
if (Game.SurvivorSubsystem.SurvivorsCollisionManager.CheckForCollisionsWith(this) || Game.ZombiesSubsystem.ZombiesCollisionManager.CheckForCollisionsWith(this))
{
Location.Position = oldPosition;
Location.Rotation = oldRotation;
zombieStationaryTime += gameTime.ElapsedGameTime.TotalSeconds;
}
else
{
zombieStationaryTime = 0.0;
}
}
if (zombieStationaryTime >= ZOMBIE_MAXIMUM_STATIONARY_TIME)
{
Alive = false;
}
Single zombieAttackValue = 0.0f;
if (zombieAttackTime >= ZOMBIE_ATTACK_DELAY_TIME[(int)Game.Options.GameDifficulty])
{
zombieAttackValue = ZOMBIE_ATTACK_VALUE;
}
if (Game.SurvivorSubsystem.SurvivorsAttackManager.AttackWithMelee(this, zombieAttackValue) == AttackResults.Damage)
{
zombieAttackTime += gameTime.ElapsedGameTime.TotalSeconds;
}
else
{
zombieAttackTime = 0.0;
}
if (animating)
{
zombieAnimationTime += gameTime.ElapsedGameTime.TotalSeconds;
if (zombieAnimationTime >= ANIMATION_DELAY)
{
animationIndex++;
if (animationIndex < ANIMATION_CELL_INDICIES.Length)
{
currentCellIndex = ANIMATION_CELL_INDICIES[animationIndex];
zombieAnimationTime = 0.0;
}
else
{
currentCellIndex = 0;
animating = false;
}
}
}
}
}