Drawing Shapes

The Kraken Engine supports drawing various kinds of primitive shapes. It can be useful when prototyping or grayboxing game mechanics before using textures.

Rectangles

Rectangles are your simplest building block. A Rect object stores x, y, width, and height values. For example, let's draw a 50x30 rectangle with its top left corner placed at (100, 100).

rect = kn.Rect(100, 100, 50, 30)
kn.draw.rect(rect, color=kn.color.WHITE)

Result:

Other Primitives

Alongside rectangles, we can also draw circles, lines, points, and polygons. Lines can be great for raycasts or debug guides, and points could be used for collision test spots or spawn locations.

# Draw a green line from (0, 0) to (200, 200)
kn.draw.line(((0, 0), (200, 200)), color=kn.color.GREEN)

# Draw a yellow point/pixel at (400, 300)
kn.draw.point((400, 300), color=kn.color.YELLOW)

Clear, Draw, Present!

Both shapes and textures are drawn in the order you call them, which means a later drawing can override the pixels in the buffer of an earlier drawing. If something covers another shape unexpectedly, check the order of your draw calls.

while kn.window.is_open():
    ...
    kn.renderer.clear()
    kn.draw.rect((20, 20, 100, 100), color=kn.color.GREEN)
    kn.draw.rect((60, 60, 100, 100), color=kn.color.ORANGE)
    kn.renderer.present()

Result: