/// <summary>
/// Process the input for this ship, from the gamepad assigned to it.
/// </summary>
/// <param name="elapsedTime">The amount of elapsed time, in seconds.</param>
/// <para
public virtual void ProcessInput(float elapsedTime, bool overlayPresent)
{
currentGamePadState = GamePad.GetState(playerIndex);
currentKeyboardState = Keyboard.GetState();
if (overlayPresent == false)
{
if (playing == false)
{
// trying to join - update the a-button timer
if ((currentGamePadState.Buttons.A == ButtonState.Pressed) ||
(currentKeyboardState.IsKeyDown(Keys.Z) && playerIndex == PlayerIndex.One) ||
(currentKeyboardState.IsKeyDown(Keys.M) && playerIndex == PlayerIndex.Two))
{
aButtonTimer += elapsedTime;
}
else
{
aButtonTimer = 0f;
}
// if the timer has exceeded the expected value, join the game
if (aButtonTimer > aButtonHeldToPlay)
{
JoinGame();
}
}
else
{
// check if we're trying to leave
if ((currentGamePadState.Buttons.B == ButtonState.Pressed) ||
(currentKeyboardState.IsKeyDown(Keys.X) && playerIndex == PlayerIndex.One) ||
(currentKeyboardState.IsKeyDown(Keys.N) && playerIndex == PlayerIndex.Two))
{
bButtonTimer += elapsedTime;
}
else
{
bButtonTimer = 0f;
}
// if the timer has exceeded the expected value, leave the game
if (bButtonTimer > bButtonHeldToLeave)
{
LeaveGame();
}
else if (dead == false)
{
//
// the ship is alive, so process movement and firing
//
// calculate the current forward vector
Vector2 forward = new Vector2((float)Math.Sin(Rotation),
-(float)Math.Cos(Rotation));
Vector2 right = new Vector2(-forward.Y, forward.X);
// calculate the current left stick value
Vector2 leftStick = currentGamePadState.ThumbSticks.Left;
leftStick.Y *= -1f;
if (leftStick.LengthSquared() > 0f)
{
Vector2 wantedForward = Vector2.Normalize(leftStick);
float angleDiff = (float)Math.Acos(
Vector2.Dot(wantedForward, forward));
float facing = (Vector2.Dot(wantedForward, right) > 0f) ?
1f : -1f;
if (angleDiff > 0f)
{
Rotation += Math.Min(angleDiff, facing * elapsedTime *
rotationRadiansPerSecond);
}
// add velocity
Velocity += leftStick * (elapsedTime * speed);
if (Velocity.Length() > velocityLengthMaximum)
{
Velocity = Vector2.Normalize(Velocity) *
velocityLengthMaximum;
}
}
else if (currentKeyboardState != null)
{
if (playerIndex == PlayerIndex.One)
{
// Rotate Left
if (currentKeyboardState.IsKeyDown(Keys.A))
{
Rotation -= elapsedTime * rotationRadiansPerSecond;
}
// Rotate Right
if (currentKeyboardState.IsKeyDown(Keys.D))
{
Rotation += elapsedTime * rotationRadiansPerSecond;
}
//create some velocity if the right trigger is down
Vector2 shipVelocityAdd = Vector2.Zero;
//now scale our direction by how hard/long the trigger/keyboard is down
if (currentKeyboardState.IsKeyDown(Keys.W))
{
//find out what direction we should be thrusting, using rotation
shipVelocityAdd.X = (float)Math.Sin(Rotation);
shipVelocityAdd.Y = (float)-Math.Cos(Rotation);
shipVelocityAdd = shipVelocityAdd / elapsedTime * MathHelper.ToRadians(9.0f);
}
//finally, add this vector to our velocity.
Velocity += shipVelocityAdd;
// Lets fire our weapon
if (currentKeyboardState.IsKeyDown(Keys.Tab))
{
// fire ahead of us
weapon.Fire(Vector2.Normalize(forward));
}
// Lets drop some Mines
if (currentKeyboardState.IsKeyDown(Keys.S))
{
// fire behind the ship
mineWeapon.Fire(-forward);
}
}
if (playerIndex == PlayerIndex.Two)
{
// Rotate Left
if (currentKeyboardState.IsKeyDown(Keys.Left))
{
Rotation -= elapsedTime * rotationRadiansPerSecond;
}
// Rotate Right
if (currentKeyboardState.IsKeyDown(Keys.Right))
{
Rotation += elapsedTime * rotationRadiansPerSecond;
}
//create some velocity if the right trigger is down
Vector2 shipVelocityAdd = Vector2.Zero;
//now scale our direction by how hard/long the trigger/keyboard is down
if (currentKeyboardState.IsKeyDown(Keys.Up))
{
//find out what direction we should be thrusting, using rotation
shipVelocityAdd.X = (float)Math.Sin(Rotation);
shipVelocityAdd.Y = (float)-Math.Cos(Rotation);
shipVelocityAdd = shipVelocityAdd / elapsedTime * MathHelper.ToRadians(9.0f);
}
//finally, add this vector to our velocity.
Velocity += shipVelocityAdd;
// Lets drop some Mines
if (currentKeyboardState.IsKeyDown(Keys.RightControl))
{
// fire ahead of us
weapon.Fire(Vector2.Normalize(forward));
}
// Lets drop some Mines
if (currentKeyboardState.IsKeyDown(Keys.Down))
{
// fire behind the ship
mineWeapon.Fire(-forward);
}
}
}
// check for firing with the right stick
Vector2 rightStick = currentGamePadState.ThumbSticks.Right;
rightStick.Y *= -1f;
if (rightStick.LengthSquared() > fireThresholdSquared)
{
weapon.Fire(Vector2.Normalize(rightStick));
}
if (currentGamePadState.Buttons.RightShoulder == ButtonState.Pressed)
{
// fire ahead of us
weapon.Fire(Vector2.Normalize(forward));
}
// check for laying mines
if ((currentGamePadState.Buttons.B == ButtonState.Pressed) &&
(lastGamePadState.Buttons.B == ButtonState.Released))
{
// fire behind the ship
mineWeapon.Fire(-forward);
}
}
}
}
// update the gamepad state
lastGamePadState = currentGamePadState;
lastKeyboardState = currentKeyboardState;
return;
}
/// <summary>
/// Process the input for this ship, from the gamepad assigned to it.
/// </summary>
/// <param name="elapsedTime">The amount of elapsed time, in seconds.</param>
/// <para
public virtual void ProcessInput(float elapsedTime, bool overlayPresent)
{
currentGamePadState = GamePad.GetState(playerIndex);
if (overlayPresent == false)
{
if (playing == false)
{
// trying to join - update the a-button timer
if (currentGamePadState.Buttons.A == ButtonState.Pressed)
{
aButtonTimer += elapsedTime;
}
else
{
aButtonTimer = 0f;
}
// if the timer has exceeded the expected value, join the game
if (aButtonTimer > aButtonHeldToPlay)
{
JoinGame();
}
}
else
{
// check if we're trying to leave
if (currentGamePadState.Buttons.B == ButtonState.Pressed)
{
bButtonTimer += elapsedTime;
}
else
{
bButtonTimer = 0f;
}
// if the timer has exceeded the expected value, leave the game
if (bButtonTimer > bButtonHeldToLeave)
{
LeaveGame();
}
else if (dead == false)
{
//
// the ship is alive, so process movement and firing
//
// calculate the current forward vector
Vector2 forward = new Vector2((float)Math.Sin(Rotation),
-(float)Math.Cos(Rotation));
Vector2 right = new Vector2(-forward.Y, forward.X);
// calculate the current left stick value
Vector2 leftStick = currentGamePadState.ThumbSticks.Left;
leftStick.Y *= -1f;
if (leftStick.LengthSquared() > 0f)
{
Vector2 wantedForward = Vector2.Normalize(leftStick);
float angleDiff = (float)Math.Acos(
Vector2.Dot(wantedForward, forward));
float facing = (Vector2.Dot(wantedForward, right) > 0f) ?
1f : -1f;
if (angleDiff > 0f)
{
Rotation += Math.Min(angleDiff, facing * elapsedTime *
rotationRadiansPerSecond);
}
// add velocity
Velocity += leftStick * (elapsedTime * speed);
if (Velocity.Length() > velocityLengthMaximum)
{
Velocity = Vector2.Normalize(Velocity) *
velocityLengthMaximum;
}
}
// check for firing with the right stick
Vector2 rightStick = currentGamePadState.ThumbSticks.Right;
rightStick.Y *= -1f;
if (rightStick.LengthSquared() > fireThresholdSquared)
{
weapon.Fire(Vector2.Normalize(rightStick));
}
// check for laying mines
if ((currentGamePadState.Buttons.B == ButtonState.Pressed) &&
(lastGamePadState.Buttons.B == ButtonState.Released))
{
// fire behind the ship
mineWeapon.Fire(-forward);
}
}
}
}
// update the gamepad state
lastGamePadState = currentGamePadState;
return;
}