/// <summary>
/// Update each flock member, Each bird want to fly with or flee from everything
/// it sees depending on what type it is
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
/// <param name="cat"></param>
public void Update(GameTime gameTime)
{
foreach (var enemy in hoard)
{
enemy.ResetThink();
foreach (var otherEnemy in hoard)
{
//this check is so we don't try to fly to ourself!
if (enemy != otherEnemy)
{
enemy.ReactTo(otherEnemy, ref hoardParams);
}
}
//Map
Rectangle bounds = enemy.BoundingRectangle;
int leftTile = (int)Math.Floor((float)bounds.Left / Tile.Width) - 1;
int rightTile = (int)Math.Ceiling(((float)bounds.Right / Tile.Width)) + 1;
int topTile = (int)Math.Floor((float)bounds.Top / Tile.Height) - 1;
int bottomTile = (int)Math.Ceiling(((float)bounds.Bottom / Tile.Height)) + 1;
// Reset flag to search for ground collision.
//isOnGround = false;
// For each potentially colliding tile,
for (int y = topTile; y <= bottomTile; ++y)
{
for (int x = leftTile; x <= rightTile; ++x)
{
// If this tile is collidable,
TileType collision = map.GetCollision(x, y);
if (collision != TileType.Ground)
{
// Determine collision depth (with direction) and magnitude.
enemy.ReactTo(map.GetBounds(x, y), ref hoardParams);
}
}
}
//Look for the cat
//thisBird.ReactTo(cat, ref flockParams);
enemy.Update(gameTime, ref hoardParams);
}
}
private void HandleCollisions()
{
// Get the player's bounding rectangle and find neighboring tiles.
Rectangle bounds = BoundingRectangle;
int leftTile = (int)Math.Floor((float)bounds.Left / Tile.Width);
int rightTile = (int)Math.Ceiling(((float)bounds.Right / Tile.Width)) - 1;
int topTile = (int)Math.Floor((float)bounds.Top / Tile.Height);
int bottomTile = (int)Math.Ceiling(((float)bounds.Bottom / Tile.Height)) - 1;
// Reset flag to search for ground collision.
//isOnGround = false;
// For each potentially colliding tile,
for (int y = topTile; y <= bottomTile; ++y)
{
for (int x = leftTile; x <= rightTile; ++x)
{
// If this tile is collidable,
TileType collision = map.GetCollision(x, y);
if (collision != TileType.Ground)
{
// Determine collision depth (with direction) and magnitude.
Rectangle tileBounds = Map.GetBounds(x, y);
Vector2 depth = RectangleExtensions.GetIntersectionDepth(bounds, tileBounds);
if (depth != Vector2.Zero)
{
float absDepthX = Math.Abs(depth.X);
float absDepthY = Math.Abs(depth.Y);
if (collision == TileType.Wall)
{
// Y Axis Collision
if (absDepthY < absDepthX)
{
position = new Vector2(Position.X, Position.Y + depth.Y);
if (velocity.X > 0 && absDepthX < 44)
{
position.X += absDepthY;
}
else if (velocity.X < 0 && absDepthX < 44)
{
position.X -= absDepthY;
}
}
//X Axis Collision
if (absDepthX < absDepthY)
{
position = new Vector2(Position.X + depth.X, Position.Y);
if (velocity.Y > 0 && absDepthY < 44)
{
position.Y += absDepthX;
}
else if (velocity.Y < 0 && absDepthY < 44)
{
position.Y -= absDepthX;
}
}
// Perform further collisions with the new bounds.
bounds = BoundingRectangle;
}
//else if (collision == TileType.Wall) // Ignore platforms.
//{
// // Resolve the collision along the X axis.
// Position = new Vector2(Position.X + depth.X, Position.Y);
// // Perform further collisions with the new bounds.
// bounds = BoundingRectangle;
//}
}
}
}
}
// Save the new bounds bottom.
//previousBottom = bounds.Bottom;
}