Sprites

Of course, any game needs some graphics, right? In Kwyll there are two main places you can draw pixel graphics, Sprites, and Tiles. A Sprite in Kwyll is a rectangular grid of pixels, Sprites can be various sizes, always in increments of 8 pixels in both axes. So, for example, 8x8, 16x16, 8x16, etc. An arbitrary limit is placed on the maximum size of 32 in either axis just to keep things within reason for the target platforms to maintain performance and limit memory use.

It is important to know that a Sprite doesn't actually 'do' anything in Kwyll, it's just an image, it has no position, it isn't by default drawn to the screen anywhere, in order to get a Sprite onto the screen, it must be used by an Object.

Planes

When a Sprite is drawn to the screen it is possible that there will be other sprites in the same place on the screen, so there has to be a way to decide which one is drawn first. This is the role of planes. Think of planes as "layers", with the smallest number being closest to the screen, and increasing numbers going further away. So an Object that has its plane set to 1, will have its sprites drawn over the top of another Object that has its plane set to 2, which in turn will drawn over another Object that has its plane set to 5. This feature may be platform specific, check the details for your platform for details.