/// <summary>
/// Allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
camera = new Camera(GraphicsDevice.Viewport.Width, GraphicsDevice.Viewport.Height);
int[,] grid = new int[,] {
{ 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0 },
{ 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0 },
{ 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0 },
{ 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0 },
{ 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0 },
{ 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0 },
{ 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0 },
{ 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0 },
{ 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0 },
{ 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }
};
Model.Terrain[,] data = new Model.Terrain[15, 20];
for (int j = 0; j < 15; j++) {
for (int i = 0; i < 20; i++) {
switch (grid[j, i]) {
case 0:
data[j, i] = Model.Terrain.Wall;
break;
case 1:
data[j, i] = Model.Terrain.Floor;
break;
}
}
}
tileMap = new AutoTileMap();
tileMap.Create(grid);
tileMap.SetTexture(Content.Load<Texture2D>("Sprites\\Terrain\\sprAutoTileSequence"), 32, 32);
base.Initialize();
}
public void Draw(SpriteBatch spriteBatch, Camera camera)
{
if (texture == null || subRects == null || tiles == null) {
return;
}
/* Here, we're taking the rotation of the camera and creating a bounding box over the rotated frame.
That bounding box will determine which tiles to draw. */
// Get the four corners of the camera
Vector3[] points = new Vector3[4] {
new Vector3(camera.Left, camera.Top, 0.0F),
new Vector3(camera.Right, camera.Top, 0.0F),
new Vector3(camera.Left, camera.Bottom, 0.0F),
new Vector3(camera.Right, camera.Bottom, 0.0F)
};
Point topLeft = new Point((int)points[0].X, (int)points[0].Y);
Point bottomRight = new Point((int)points[0].X, (int)points[0].Y);
Matrix xform = Matrix.CreateRotationZ(camera.Rotation);
// Transform the camera
foreach (Vector3 point in points) {//int i = 0; i < points.Length; i++) {
Vector3 xformed = Vector3.Transform(point, xform);
// Get the maximum and minimum coordinates in the transformation
if (xformed.X < topLeft.X) { topLeft.X = (int)Math.Floor(xformed.X); }
else if (xformed.X > bottomRight.X) { bottomRight.X = (int)Math.Ceiling(xformed.X); }
if (xformed.Y < topLeft.Y) { topLeft.Y = (int)Math.Floor(xformed.Y); }
else if (xformed.Y > bottomRight.Y) { bottomRight.Y = (int)Math.Ceiling(xformed.Y); }
}
// Convert our extrema from pixels to tiles
topLeft.X /= TileWidth;
topLeft.Y /= TileHeight;
bottomRight.X = (int)Math.Ceiling(bottomRight.X / (float)TileWidth);
bottomRight.Y = (int)Math.Ceiling(bottomRight.Y / (float)TileHeight);
// Draw the tiles
int tile;
for (int j = topLeft.Y; j < bottomRight.Y; j++) {
for (int i = topLeft.X; i < bottomRight.X; i++) {
if (i < 0 || i >= Width || j < 0 || j >= Height) {
continue;
}
tile = tiles[j, i];
spriteBatch.Draw(texture, new Vector2(i * TileWidth, j * TileHeight), subRects[tile], Color.White);
}
}
}
public void Draw(SpriteBatch spriteBatch, Camera camera)
{
tileMap.Draw(spriteBatch, camera);
}