PendulumGame.PendulumGravityChooserScreen Class Reference

This screen implements gravity chooser for the Pendulum Game. More...

Inheritance diagram for PendulumGame.PendulumGravityChooserScreen:

List of all members.

Public Member Functions
	PendulumGravityChooserScreen ()
	Constructor of the screen.
override void	LoadContent ()
	Load graphics content for the game.
override void	UnloadContent ()
	Unload graphics content used by the game.
override void	Update (GameTime gameTime, bool otherScreenHasFocus, bool coveredByOtherScreen)
	Updates the state of the game. This method checks the GameScreen.IsActive property, so the game will stop updating when the pause menu is active, or if you tab away to a different application.
override void	HandleInput (InputState input)
	Lets the game respond to player input. Unlike the Update method, this will only be called when the gameplay screen is active.
override void	Draw (GameTime gameTime)
	Draws the gameplay screen.

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Detailed Description

This screen implements gravity chooser for the Pendulum Game.

Definition at line 23 of file PendulumGravityChooserScreen.cs.

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Constructor & Destructor Documentation

PendulumGame.PendulumGravityChooserScreen.PendulumGravityChooserScreen

(

)

Constructor of the screen.

Definition at line 79 of file PendulumGravityChooserScreen.cs.

        {
            TransitionOnTime = TimeSpan.FromSeconds(1.5);
            TransitionOffTime = TimeSpan.FromSeconds(1.5);

            this.zoom = false;
        }

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Member Function Documentation

override void PendulumGame.PendulumGravityChooserScreen.Draw

(

GameTime

gameTime

)

[virtual]

Draws the gameplay screen.

Reimplemented from NewGamePhysics.StateManager.GameScreen.

Definition at line 285 of file PendulumGravityChooserScreen.cs.

        {
            // Match transition to selector size
            if (this.zoom)
            {
                gravitySelector.DisplaySize = 1.0f + TransitionPosition;
            } 
            else 
            {
                gravitySelector.DisplaySize = 1.0f - TransitionPosition;
            }

            // Draw gravity selector
            gravitySelector.Draw(gameTime);

            // If the game is transitioning on or off, fade it out to black.
            if (TransitionPosition > 0)
            {
                ScreenManager.FadeBackBufferToBlack(255 - TransitionAlpha);
            }
        }

override void PendulumGame.PendulumGravityChooserScreen.HandleInput

(

InputState

input

)

[virtual]

Lets the game respond to player input. Unlike the Update method, this will only be called when the gameplay screen is active.

Reimplemented from NewGamePhysics.StateManager.GameScreen.

Definition at line 207 of file PendulumGravityChooserScreen.cs.

        {
            if (input == null)
            {
                throw new ArgumentNullException("input");
            }

            if (input.IsInputCancel(null) || input.IsDisconnected(null))
            {
                ScreenManager.AddScreen(new PendulumPauseMenuScreen(), null);
            }
            else
            {
                if (input.IsInputSelect(null))
                {
                    // Capture selected value
                    PendulumGame.State.CurrentGravity = gravitySelector.Gravity;
                    this.zoom = true;

                    // Quit to options menu
                    PendulumLoadingScreen.Load(
                        ScreenManager,
                        true,
                        null,
                        new PendulumGameplayScreen());
                }

                // Keyboard speed adjustment
                if (input.IsInputLeft(null))
                {
                    longitudeSpeed += speedStep;
                }
                else if (input.IsInputRight(null))
                {
                    longitudeSpeed -= speedStep;
                }

                if (input.IsInputUp(null))
                {
                    latitudeSpeed += speedStep;
                }
                else if (input.IsInputDown(null))
                {
                    latitudeSpeed -= speedStep;
                }

                // Speed limiter
                if (longitudeSpeed < -speedMax)
                {
                    longitudeSpeed = -speedMax;
                }
                else if (longitudeSpeed > speedMax)
                {
                    longitudeSpeed = speedMax;
                }

                if (latitudeSpeed < -speedMax)
                {
                    latitudeSpeed = -speedMax;
                }
                else if (latitudeSpeed > speedMax)
                {
                    latitudeSpeed = speedMax;
                }

                // Update rotation
                gravitySelector.Longitude += longitudeSpeed;
                gravitySelector.Latitude += latitudeSpeed;

                // Drag speed
                longitudeSpeed *= speedDragFactor;
                latitudeSpeed *= speedDragFactor;
            }
        }

override void PendulumGame.PendulumGravityChooserScreen.LoadContent

(

)

[virtual]

Load graphics content for the game.

Reimplemented from NewGamePhysics.StateManager.GameScreen.

Definition at line 90 of file PendulumGravityChooserScreen.cs.

        {
            if (this.contentManager == null)
            {
                this.contentManager = new ContentManager(ScreenManager.Game.Services, "Content");
            }

            // Create physical element(s)
            GravityCalculator gravityCalculator = 
                new GravityCalculator(PendulumGame.State.CurrentCelestialObject);

            // Per-object settings and sound
            this.cue = null;
            switch (PendulumGame.State.CurrentCelestialObject)
            {
                case CelestialObject.Earth:
                    gravityCalculator.EarthGravityModel =
                        PendulumGame.State.CurrentEarthGravityModel;
                    this.cue = this.ScreenManager.SoundBank.GetCue("earth");
                    break;
                case CelestialObject.Mars:
                    gravityCalculator.MarsGravityModel =
                        PendulumGame.State.CurrentMarsGravityModel;
                    break;
                case CelestialObject.Sun:
                    this.cue = this.ScreenManager.SoundBank.GetCue("sun");
                    break;
                case CelestialObject.Venus:
                    this.cue = this.ScreenManager.SoundBank.GetCue("venus");
                    break;
                case CelestialObject.Jupiter:
                    this.cue = this.ScreenManager.SoundBank.GetCue("jupiter");
                    break;
                case CelestialObject.Callisto:
                    this.cue = this.ScreenManager.SoundBank.GetCue("callisto");
                    break;
                case CelestialObject.Ganymede:
                    this.cue = this.ScreenManager.SoundBank.GetCue("ganymede");
                    break;
                case CelestialObject.Europa:
                    this.cue = this.ScreenManager.SoundBank.GetCue("europa");
                    break;
                case CelestialObject.Saturn:
                    this.cue = this.ScreenManager.SoundBank.GetCue("saturn");
                    break;
            }

            this.gravitySelector = new GravitySelector(
                ScreenManager,
                PendulumGame.State.CurrentCelestialObject,
                gravityCalculator);

            // Lower volume of sound
            this.ScreenManager.SetVolume("Default", 1.0f);

            // Start sound
            if (null != this.cue)
            {
                this.cue.Play();
            }

            // Reset game time
            ScreenManager.Game.ResetElapsedTime();
        }

override void PendulumGame.PendulumGravityChooserScreen.UnloadContent

(

)

[virtual]

Unload graphics content used by the game.

Reimplemented from NewGamePhysics.StateManager.GameScreen.

Definition at line 158 of file PendulumGravityChooserScreen.cs.

        {
            if (null != this.cue)
            {
                this.cue.Stop(AudioStopOptions.Immediate);
            }

            this.contentManager.Unload();
        }

override void PendulumGame.PendulumGravityChooserScreen.Update	(	GameTime	gameTime,
		bool	otherScreenHasFocus,
		bool	coveredByOtherScreen
	)			[virtual]

Updates the state of the game. This method checks the GameScreen.IsActive property, so the game will stop updating when the pause menu is active, or if you tab away to a different application.

Reimplemented from NewGamePhysics.StateManager.GameScreen.

Definition at line 177 of file PendulumGravityChooserScreen.cs.

        {
            base.Update(gameTime, otherScreenHasFocus, coveredByOtherScreen);

            if (IsActive)
            {
                // Maybe start sound
                if ((null != this.cue) && (!this.cue.IsPlaying))
                {
                    this.cue.Resume();
                }

                // Animate gravity selector
                gravitySelector.Update(gameTime);
            }
            else
            {
                // Maybe stop sound
                if ((null != this.cue) && (this.cue.IsPlaying))
                {
                    this.cue.Pause();
                }
            }
        }

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The documentation for this class was generated from the following file:

• C:/Users/Andreas Schiffler/Desktop/SVN/NewGamePhysics/PendulumGame/Screens/PendulumGravityChooserScreen.cs