Raku Land

SDL2::Raw

cpan:TIMOTIMO

SDL2::Raw

Build Status Build status

A low-sugar binding to SDL2.

Synopsis

use SDL2::Raw;

die "couldn't initialize SDL2: { SDL_GetError }"
  if SDL_Init(VIDEO) != 0;

my $window = SDL_CreateWindow(
    "Hello, world!",
    SDL_WINDOWPOS_CENTERED_MASK, SDL_WINDOWPOS_CENTERED_MASK,
    800, 600,
    OPENGL
);
my $render = SDL_CreateRenderer($window, -1, ACCELERATED +| PRESENTVSYNC);

my $event = SDL_Event.new;

main: loop {
    SDL_SetRenderDrawColor($render, 0, 0, 0, 0);
    SDL_RenderClear($render);

    while SDL_PollEvent($event) {
        if $event.type == QUIT {
            last main;
        }
    }

    SDL_SetRenderDrawColor($render, 255, 255, 255, 255);
    SDL_RenderFillRect($render,
        SDL_Rect.new(
            2 * min(now * 300 % 800, -now * 300 % 800),
            2 * min(now * 470 % 600, -now * 470 % 600),
        sin(3 * now) * 50 + 80, cos(4 * now) * 50 + 60));

    SDL_RenderPresent($render);
}
SDL_Quit;

Status

There's a bunch of functions and structs already covered, but there's also a whole bunch of things I haven't touched at all. If you need any specific part of the API covered, feel free to open a ticket on github or even a pull request!

Installation

PlatformInstallation
Ubuntu 14.04 and abovesudo apt install libsdl2-dev
Fedora 25 and aboveyum install SDL2-devel
Arch Linuxpacman -S sdl2
Gentooemerge -av libsdl2
macOSbrew install sdl2 pkg-config
Windowshttps://libsdl.org/download-2.0.php

Examples

Snake

screenshots/snake-screenshot.png

A simple Snake game. Control it with the arrow keys, guide your snake to eat the red circles, and avoid running into your tail.

This code uses Cairo to create the images for the snake's body and tail.

Particles

screenshots/particles-screenshot.png

A very simple particle system that spews white pixels from a central point that get pulled down by gravity and bounce on the floor.

Shooter

screenshots/shooter-screenshot.png

A more complicated game. Control it with the arrow keys and hold the spacebar to fire.

The code also uses Cairo to render the player's spaceship and the enemy spaceships. In generating the starfields it shows how to render to a texture with SDL2.

White Noise

Just draws random white and black pixels to a texture and displays it.

screenshots/white-noise-screenshot.png