private void UpdateCamera(GameTime gameTime)
{
if (camera.ObjectToFollow != null)
{
if (camera.CurrentBehavior == Camera.Behavior.FreeView)
{
camera.Position = camera.ObjectToFollow.Position + Vector3.UnitY * 1000;
}
if (camera.CurrentBehavior == Camera.Behavior.FirstPerson)
{
camera.Position = camera.ObjectToFollow.Position - camera.ObjectToFollow.ViewDirection;
if (camera.ObjectToFollow.Target != null && camera.ObjectToFollow.IsShooting)
{
camera.LookAt(camera.ObjectToFollow.Target.Position);
}
else
{
camera.LookAt(camera.ObjectToFollow.Position + camera.ObjectToFollow.ViewDirection * 10);
}
camera.UndoRoll();
}
}
Vector3 pos = camera.Position;
float gridSpacing = terrain.TerrainHeightMap.GridSpacing;
float size = terrain.TerrainHeightMap.Size * gridSpacing;
float lowerBounds = 2.0f * gridSpacing;
float upperBounds = size - (2.0f * gridSpacing);
float height = terrain.TerrainHeightMap.HeightAt(pos.X, pos.Z) + 50.0f;
if (pos.X < lowerBounds)
{
pos.X = lowerBounds;
}
if (pos.X > upperBounds)
{
pos.X = upperBounds;
}
switch (camera.CurrentBehavior)
{
case Camera.Behavior.FirstPerson:
pos.Y = height;
break;
case Camera.Behavior.Spectator:
case Camera.Behavior.Flight:
if (pos.Y < height)
{
pos.Y = height;
}
if (pos.Y > terrain.TerrainSize * 0.5f)
{
pos.Y = terrain.TerrainSize * 0.5f;
}
break;
case Camera.Behavior.FreeView:
if (pos.Y < height)
{
pos.Y = height;
}
if (pos.Y > terrain.TerrainSize * 3)
{
pos.Y = terrain.TerrainSize * 3;
}
break;
default:
break;
}
if (pos.Z < lowerBounds)
{
pos.Z = lowerBounds;
}
if (pos.Z > upperBounds)
{
pos.Z = upperBounds;
}
camera.Position = pos;
}