Software Sprite Control
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Jan-31
A sprite or graphical marker is normally moved by a user around a graphics display screen interactively via dedicated hardware. In this disclosure, hardware provided for updating bit planes is controlled by software to provide sprite function. This enables sprites of any size or shape, multiple sprites or compound sprites of selected colors to be implemented. A sprite is a graphical entity which can be moved around the viewing area of a graphics terminal. A user controls the position of the sprite by means of an input device, such as a keyboard, mouse or graphics tablet, using the sprite to point to areas on the display. Typically, a sprite is a fixed size area which overlays the screen image that would normally be displayed at the position occupied by the sprite.