SPRITE AT (command)

With the SPRITE AT action you can indicate the position where the sprite will be placed. The positioning will happen instantly, and the sprite will be drawn in that position as soon as the video raster line reaches that position. Note that the position is indicated in sprites coordinates, and not in pixels: it follows that it is necessary to carry out the appropriate proportions using the constants (percentiles) SCREEN SPRITE RATIO X and SCREEN SPRITE RATIO Y.

Additionally, the video screen may have a border around the area actually accessible to the graphics chipset: as a result, a hardware sprite positioned with a coordinate that falls within the border may not be visible. To remedy this problem, and ensure that the sprite is visible, it is necessary to start from the positions induced by the SCREEN BORDER X and SCREEN BORDER Y coordinates.

Finally, please note that the keyword to use is only AT, which must therefore be prefixed by the SPRITE keyword and the sprite index. It is possible to juxtapose multiple AT instructions but, obviously, the processor speed is such that only the last one that counts will be the one that counts.

EXAMPLE

 SPRITE #1 AT ( #100, #100 )