public Campfire(Game game)
{
parentGame = game;
// TODO: use this.Content to load your game content here
logs = parentGame.Content.Load<Texture2D>("logs");
// Declare a new Particle System instance and Initialize it
mcParticleSystem = new FireParticleSystem(parentGame);
mcParticleSystem.AutoInitialize(parentGame.GraphicsDevice, parentGame.Content, null);
}
public Campfire(Game game, World world, SpriteBatch batch, Vector2 position)
{
//Set the parent game
_parentGame = game;
//Initialize the logs
_logs = _parentGame.Content.Load<Texture2D>("EnvironmentObjects/logs");
//Initialize the scale (we're scaling down the logs when we draw instead of in the original image to show off that capability)
_scale = new Vector2(0.5f, 0.45f);
//No rotation
_rotation = 0f;
//No sprite effects
_spriteEffects = SpriteEffects.None;
//Layer depth to front layer
_layerDepth = 0f;
//Create an array to hold the data from the texture
uint[] data = new uint[_logs.Width * _logs.Height];
//Transfer the texture data to the array
_logs.GetData(data);
//Find the vertices that makes up the outline of the shape in the texture
Vertices textureVertices = PolygonTools.CreatePolygon(data, _logs.Width, false);
//The tool return vertices as they were found in the texture.
//We need to find the real center (centroid) of the vertices for 2 reasons:
//1. To translate the vertices so the polygon is centered around the centroid.
Vector2 centroid = -textureVertices.GetCentroid();
textureVertices.Translate(ref centroid);
//2. To draw the texture the correct place.
_origin = -centroid;
//We simplify the vertices found in the texture.
textureVertices = SimplifyTools.ReduceByDistance(textureVertices, 4f);
//Since it is a concave polygon, we need to partition it into several smaller convex polygons
List<Vertices> list = BayazitDecomposer.ConvexPartition(textureVertices);
//scale the vertices from graphics space to sim space
Vector2 vertScale = new Vector2(ConvertUnits.ToSimUnits(1)) * _scale;
foreach (Vertices vertices in list)
{
vertices.Scale(ref vertScale);
}
//Create a single body with multiple fixtures
_body = BodyFactory.CreateCompoundPolygon(world, list, 1f, BodyType.Dynamic);
_body.BodyType = BodyType.Static;
_body.CollidesWith = Category.All;
_body.Position = position;
// Declare a new Particle System instance and Initialize it
_particleSystem = new FireParticleSystem(_parentGame);
_particleSystem.AutoInitialize(_parentGame.GraphicsDevice, _parentGame.Content, batch);
}