public void update(GameTime gametime, Master master)
{
//calculate the transform matrix
transform = Matrix.Identity *
//translate by negative position
Matrix.CreateTranslation(-position.X, -position.Y, 0) *
Matrix.CreateScale(scale) *
//rotate about z axis
//math.createrotationz(1.75f) *
//translate by the origin amount
Matrix.CreateTranslation(viewportwidth / 2, viewportheight / 2, 0);
translate = Matrix.Identity *
//translate by negative position
Matrix.CreateTranslation(-position.X, -position.Y, 0) *
//rotate about z axis
//math.createrotationz(1.75f) *
//translate by the origin amount
Matrix.CreateTranslation(viewportwidth / 2, viewportheight / 2, 0);
//delta so the movement seems smoooth
float delta = (float)gametime.ElapsedGameTime.TotalSeconds;
//get a rectangle which contains all the players
Rectangle players = master.playerspace();
//pad the rectangle
players.X -= 200;
players.Y -= 200;
players.Width += 400;
players.Height += 400;
position = smoothstep(position, new Vector2(players.Center.X, players.Center.Y), movespeed);
//create a scale based on the the size of the player rectangle in respect to the original viewport size
float xscale = viewportwidth / players.Width;
float yscale = viewportheight/ players.Height;
//use the largest scaling value, the smaller value scale will still include all the picture from the larger scale
float newscale = (xscale < yscale) ? xscale : yscale;
//clamp the scale to the min or max
newscale = clamp(newscale, minscale, maxscale);
//smooth the scaling
scale = smoothstep(scale, newscale, scalespeed);
//currently not using the rotation, but it is in there for future reference
}
