Nim/tests/niminaction/Chapter8/sdl/sdl_test.nim

discard """
action: compile
"""

import os
import sdl

if sdl.init(INIT_VIDEO) == -1:
  quit("Couldn't initialise SDL")

var window: SdlWindowPtr
var renderer: SdlRendererPtr
if createWindowAndRenderer(640, 480, 0, window, renderer) == -1:
  quit("Couldn't create a window or renderer")

discard pollEvent(nil)
renderer.setDrawColor 29, 64, 153, 255
renderer.clear
renderer.setDrawColor 255, 255, 255, 255

when defined(c):
  # just to ensure code from NimInAction still works, but
  # the `else` branch would work as well in C mode
  var points = [
    (260'i32, 320'i32),
    (260'i32, 110'i32),
    (360'i32, 320'i32),
    (360'i32, 110'i32)
  ]
else:
  var points = [
    (260.cint, 320.cint),
    (260.cint, 110.cint),
    (360.cint, 320.cint),
    (360.cint, 110.cint)
  ]

renderer.drawLines(addr points[0], points.len.cint)

renderer.present
sleep(5000)