public LineOfSight(Vector2 fovCameraPostion, WorldEntity detectableEntity, WorldEntity[] worldEntites, float fovAngleInRadians, Vector2 fovCameraDirection)
{
_fovCameraPosition = fovCameraPostion;
_detectableEntity = detectableEntity;
_worldEntities = worldEntites;
_fovAngleInRadians = fovAngleInRadians;
_fovCameraDirection = fovCameraDirection;
_result = new Vector2();
_newPixelPosition = new Vector2();
}
/// <summary>
/// Handles the mouse, gamepad and keyboard controls
/// </summary>
///
public void ControlUpdate()
{
KeyboardState keyboard = Keyboard.GetState();
GamePadState gamePad = GamePad.GetState(PlayerIndex.One);
MouseState mouse = Mouse.GetState();
_elapsed = 0.0f;
if (gamePad.Buttons.Back == ButtonState.Pressed ||
keyboard.IsKeyDown(Keys.Escape))
{
this.Exit();
}
if (keyboard.IsKeyDown(Keys.Left) ||
gamePad.DPad.Left == ButtonState.Pressed)
{
_fovCameraPosition.X -= FOV_CAMERA_SPEED;
_fovCameraDirectionFacing.X -= FOV_CAMERA_SPEED;
_fovCameraLeftAngleBoundary.X -= FOV_CAMERA_SPEED;
_fovCameraRightAngleBoundary.X -= FOV_CAMERA_SPEED;
}
if (keyboard.IsKeyDown(Keys.Right) ||
gamePad.DPad.Right == ButtonState.Pressed)
{
_fovCameraPosition.X += FOV_CAMERA_SPEED;
_fovCameraDirectionFacing.X += FOV_CAMERA_SPEED;
_fovCameraLeftAngleBoundary.X += FOV_CAMERA_SPEED;
_fovCameraRightAngleBoundary.X += FOV_CAMERA_SPEED;
}
if (keyboard.IsKeyDown(Keys.Up) ||
gamePad.DPad.Up == ButtonState.Pressed)
{
_fovCameraPosition.Y -= FOV_CAMERA_SPEED;
_fovCameraDirectionFacing.Y -= FOV_CAMERA_SPEED;
_fovCameraLeftAngleBoundary.Y -= FOV_CAMERA_SPEED;
_fovCameraRightAngleBoundary.Y -= FOV_CAMERA_SPEED;
}
if (keyboard.IsKeyDown(Keys.Down) ||
gamePad.DPad.Down == ButtonState.Pressed)
{
_fovCameraPosition.Y += FOV_CAMERA_SPEED;
_fovCameraDirectionFacing.Y += FOV_CAMERA_SPEED;
_fovCameraLeftAngleBoundary.Y += FOV_CAMERA_SPEED;
_fovCameraRightAngleBoundary.Y += FOV_CAMERA_SPEED;
}
if (keyboard.IsKeyDown(Keys.Delete))
{
_elapsed += -0.01f;
}
if (keyboard.IsKeyDown(Keys.PageDown))
{
_elapsed = 0.01f;
}
_fovCameraLeftAngleBoundary = RotatePointOnZAxis(_fovCameraLeftAngleBoundary, _elapsed);
_fovCameraRightAngleBoundary = RotatePointOnZAxis(_fovCameraRightAngleBoundary, _elapsed);
_fovCameraDirectionFacing = RotatePointOnZAxis(_fovCameraDirectionFacing, _elapsed);
_RotationAngle += _elapsed;
float circle = MathHelper.Pi * 2;
_RotationAngle = _RotationAngle % circle;
_cursorPosition.X = (float)mouse.X;
_cursorPosition.Y = (float)mouse.Y;
if (!_leftMouseBtnHeld)
{
if (mouse.LeftButton == ButtonState.Pressed)
{
//loop through each object and see if the cursor is on the object
//just using a basic square shape so it is not pixel perfect
foreach (WorldEntity entity in _worldEntites)
{
if (_cursorPosition.X > entity.Position.X && _cursorPosition.X < entity.Position.X + entity.Texture.Width)
{
if (_cursorPosition.Y > entity.Position.Y && _cursorPosition.Y < entity.Position.Y + entity.Texture.Height)
{
if (keyboard.IsKeyDown(Keys.S))
{
//Set what was the detectable entity to false
_currentDetectableEntity.IsDetectable = false;
//Assign new entity and set detectable to true
_currentDetectableEntity = entity;
_currentDetectableEntity.IsDetectable = true;
//update the line of sight to know which object to detect
_lineOfSight.DetectableEntity = _currentDetectableEntity;
}
_currentlySelectedEntity.Selected = false;
_currentlySelectedEntity = entity;
//these values are used later to to keep the cursur position relative to the oject when dragging
_currentlySelectedEntity.XDiff = _cursorPosition.X - _currentlySelectedEntity.Position.X;
_currentlySelectedEntity.YDiff = _cursorPosition.Y - _currentlySelectedEntity.Position.Y;
_currentlySelectedEntity.Selected = true;
_leftMouseBtnHeld = true;
break;
}
}
}
}
}
//-------------------
if (!_rightMouseBtnHeld)
{
if (mouse.RightButton == ButtonState.Pressed)
{
foreach (WorldEntity entity in _worldEntites)
{
if (_cursorPosition.X > entity.Position.X &&
_cursorPosition.X < entity.Position.X + entity.Texture.Width)
{
if (_cursorPosition.Y > entity.Position.Y &&
_cursorPosition.Y < entity.Position.Y + entity.Texture.Height)
{
_currentlySelectedEntity.Selected = false;
_currentlySelectedEntity = entity;
_currentlySelectedEntity.Selected = true;
_rightMouseBtnHeld = true;
break;
}
}
}
}
}
// y - entity.position.Y;
if (_leftMouseBtnHeld)
{
//following required for allowing the user to hold down left then press 'S'
if (keyboard.IsKeyDown(Keys.S))
{
_currentDetectableEntity.IsDetectable = false;
_currentDetectableEntity = _currentlySelectedEntity;
_currentDetectableEntity.IsDetectable = true;
_lineOfSight.DetectableEntity = _currentDetectableEntity;
}
_currentlySelectedEntityPosition.X = _cursorPosition.X - _currentlySelectedEntity.XDiff;
_currentlySelectedEntityPosition.Y = _cursorPosition.Y - _currentlySelectedEntity.YDiff;
_currentlySelectedEntity.Position = _currentlySelectedEntityPosition;
}
if (_rightMouseBtnHeld)
{
_currentlySelectedEntity.Rotate = 0.01f;
}
if (mouse.LeftButton == ButtonState.Released)
{
_leftMouseBtnHeld = false;
}
if (mouse.RightButton == ButtonState.Released)
{
_rightMouseBtnHeld = false;
}
if (mouse.RightButton == ButtonState.Released && mouse.LeftButton == ButtonState.Released)
{
_currentlySelectedEntity.Selected = false;
}
}
/// <summary>
/// Load your graphics content. If loadAllContent is true, you should
/// load content from both ResourceManagementMode pools. Otherwise, just
/// load ResourceManagementMode.Manual content.
///
/// We load the textures here, therefore we also load the verticies of the
/// world entities, and create the entities before adding them to a container
/// </summary>
/// <param name="loadAllContent">Which type of content to load.</param>
///
protected override void LoadGraphicsContent(bool loadAllContent)
{
if (loadAllContent)
{
// Load textures
greenSquareTexture = _content.Load <Texture2D>("Content/GreenSquare");
purpleSquareTexture = _content.Load <Texture2D>("Content/PurpleSquare");
triangleTexture = _content.Load <Texture2D>("Content/Triangle");
concaveCircleTexture = _content.Load <Texture2D>("Content/CircularConcave");
lineTexture = _content.Load <Texture2D>("Content/Line");
cursorCrosshairTexture = _content.Load <Texture2D>("Content/CursorCrosshair");
_cursorOrigin = new Vector2(cursorCrosshairTexture.Width * 0.5f, cursorCrosshairTexture.Height * 0.5f);
//Sets up the vertices of the entity based on the dimensions of each texture
//vertex code generated by Shape Vertices tool
Vector2[] squareVertices = new Vector2[4];
squareVertices[0] = new Vector2(0.0f, 50.0f);
squareVertices[1] = new Vector2(50.0f, 50.0f);
squareVertices[2] = new Vector2(50.0f, 0.0f);
squareVertices[3] = new Vector2(0.0f, 00.0f);
_greenSquareEntity = new WorldEntity(greenSquareTexture, squareVertices);
_greenSquareEntity.Position = new Vector2(500.0f, 300.0f);
_greenSquareEntity.Centroid = new Vector2(25.0f, 25.0f);
//By default the green square will be the entity to detect
_greenSquareEntity.IsDetectable = true;
Vector2[] triangleVertices = new Vector2[3];
triangleVertices[0] = new Vector2(0.0f, 49.0f);
triangleVertices[1] = new Vector2(23.0f, 3.0f);
triangleVertices[2] = new Vector2(49.0f, 49.0f);
triangleEntity = new WorldEntity(triangleTexture, triangleVertices);
triangleEntity.Centroid = new Vector2(23.0f, 34.0f);
triangleEntity.Position = new Vector2(300.0f, 100.0f);
Vector2[] concaveCircleVertices = new Vector2[27];
concaveCircleVertices[0] = new Vector2(3.0f, 38.0f);
concaveCircleVertices[1] = new Vector2(1.0f, 32.0f);
concaveCircleVertices[2] = new Vector2(0.0f, 26.0f);
concaveCircleVertices[3] = new Vector2(0.0f, 21.0f);
concaveCircleVertices[4] = new Vector2(1.0f, 14.0f);
concaveCircleVertices[5] = new Vector2(4.0f, 8.0f);
concaveCircleVertices[6] = new Vector2(8.0f, 5.0f);
concaveCircleVertices[7] = new Vector2(12.0f, 2.0f);
concaveCircleVertices[8] = new Vector2(16.0f, 0.0f);
concaveCircleVertices[9] = new Vector2(20.0f, 0.0f);
concaveCircleVertices[10] = new Vector2(28.0f, 0.0f);
concaveCircleVertices[11] = new Vector2(34.0f, 1.0f);
concaveCircleVertices[12] = new Vector2(40.0f, 4.0f);
concaveCircleVertices[13] = new Vector2(44.0f, 8.0f);
concaveCircleVertices[14] = new Vector2(47.0f, 14.0f);
concaveCircleVertices[15] = new Vector2(49.0f, 20.0f);
concaveCircleVertices[16] = new Vector2(49.0f, 27.0f);
concaveCircleVertices[17] = new Vector2(48.0f, 32.0f);
concaveCircleVertices[18] = new Vector2(45.0f, 37.0f);
concaveCircleVertices[19] = new Vector2(44.0f, 32.0f);
concaveCircleVertices[20] = new Vector2(42.0f, 28.0f);
concaveCircleVertices[21] = new Vector2(36.0f, 22.0f);
concaveCircleVertices[22] = new Vector2(29.0f, 19.0f);
concaveCircleVertices[23] = new Vector2(20.0f, 19.0f);
concaveCircleVertices[24] = new Vector2(13.0f, 22.0f);
concaveCircleVertices[25] = new Vector2(7.0f, 28.0f);
concaveCircleVertices[26] = new Vector2(5.0f, 34.0f);
_concaveCircleEntity = new WorldEntity(concaveCircleTexture, concaveCircleVertices);
_concaveCircleEntity.Centroid = new Vector2(25.0f, 25.0f);
_concaveCircleEntity.Position = new Vector2(100.0f, 100.0f);
_purpleSquareEntity = new WorldEntity(purpleSquareTexture, squareVertices);
_purpleSquareEntity.Centroid = new Vector2(25.0f, 25.0f);
_purpleSquareEntity.Position = new Vector2(460.0f, 240.0f);
//container to hold all world world entities
_worldEntites = new WorldEntity[4];
_worldEntites[0] = _purpleSquareEntity;
_worldEntites[1] = triangleEntity;
_worldEntites[2] = _concaveCircleEntity;
_worldEntites[3] = _greenSquareEntity;
//
_currentlySelectedEntity = _greenSquareEntity;
_currentlySelectedEntity.Selected = true;
_currentDetectableEntity = _greenSquareEntity;
_currentlySelectedEntity.IsDetectable = true;
_spriteBatch = new SpriteBatch(_graphics.GraphicsDevice);
_lineOfSight = new LineOfSight(_fovCameraPosition, _greenSquareEntity, _worldEntites, MathHelper.ToRadians(FOV_ANGLE_DEGREES / 2), _fovCameraDirectionFacing);
}
}