The Basics: Getting a Grid (Pygame)

Consider the following introductory example from Pygame-ce <https://pyga.me/docs/>:

It currently displays a purple screen. Let us adapt this to draw a (5, 5) grid across the entire screen. We start of with some imports:

from lpyout import Grid
from lpyout.pygame import screen_wrapper
from lpyout.pygame.render import fast_render

The first import gives us the ability to create Grid objects. Each Grid object should be contained in a Screen (that is, the actual viewport, such as a window). We provide some defaults for pygame. The second import gives us the entire window created by pygame. Lastly, a Grid object just stores coordinates, so we implement some basic rendering routines for pygame that actually let you display the grid.

Now, after running = True add:

screen_wrapper.update()
grid = Grid.fill_screen(screen_wrapper, 5, 5)

screen_wrapper.update() gets the dimensions of the current pygame window. Because there are so many ways to make a grid, we have various class methods that act as simplified constructors. fill_screen makes the grid fill the specified screen (which in our case, fills the window).

Now, replace screen.fill("purple") with screen.fill("black") and right below it add:

# fill the screen with a color to wipe away anything from last frame
screen.fill("black")

# Render grid
screen_wrapper.update()
fast_render(grid, screen)

Like above, in case the window changes size, we .update the screen_wrapper object. Lastly, we make a call to fast_render(grid, screen) to actually render the grid!