When firing a shot in a 3D (or 2D, for that matter) game, how do you determine the direction of the shot?
Typically, the thing that's firing a shot (a camera, a gun, etc.) has a direction of its own. When firing a shot, you give the bullet or projectile the same direction vector as the item from which it emanates.
Fact or fiction: every model has a
BoundingSphere object that surrounds the entire model and
can be used for collision detection.
object belongs to a
Model has one
may cover the entire model, but a
Model may also have several meshes, and in that
Model will have
objects that each surround portions of the
associated with a moving model for collision detection, what must be
done to the
BoundingSphere in order
to accurately detect collisions?
BoundingSpheres do not
automatically move, rotate, and scale with the model that owns
them. You need to apply the movement, rotation, and scale
matrices to the
BoundingSphere before using them for collision
What is the difference between drawing 2D images on screen in a 3D game and drawing 2D images on the screen in a 2D game?
Nothing. Drawing in 2D is the same regardless of whether there are also 3D graphics in the game.
How much does the tongue of a blue whale weigh?
As much as an average-sized elephant! ...