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const std = @import("std");
const sdl = @cImport(@cInclude("SDL2/SDL.h"));
pub const instance = struct {
renderer: ?*sdl.SDL_Renderer,
window: ?*sdl.SDL_Window,
};
pub fn init() instance {
_ = sdl.SDL_Init(sdl.SDL_INIT_VIDEO);
var window = sdl.SDL_CreateWindow(
"main",
sdl.SDL_WINDOWPOS_UNDEFINED,
sdl.SDL_WINDOWPOS_UNDEFINED,
500,
500,
sdl.SDL_WINDOW_SHOWN,
);
var renderer = sdl.SDL_CreateRenderer(
window,
-1,
sdl.SDL_RENDERER_ACCELERATED,
);
return instance{
.window = window,
.renderer = renderer,
};
}
pub fn draw_line(i: instance, p1: []f32, p2: []f32) void {
_ = sdl.SDL_RenderDrawLineF(i.renderer, p1[0], p1[1], p2[0], p2[1]);
}
pub fn delay(t: u32) void {
sdl.SDL_Delay(t);
}
pub fn draw_color(i: instance, r: u8, g: u8, b: u8, a: u8) void {
_ = sdl.SDL_SetRenderDrawColor(i.renderer, r, g, b, a);
}
pub fn clear(i: instance) void {
_ = sdl.SDL_RenderClear(i.renderer);
}
pub fn present(i: instance) void {
sdl.SDL_RenderPresent(i.renderer);
}
pub fn get_event() event {
var e: sdl.SDL_Event = undefined;
_ = sdl.SDL_PollEvent(&e);
var key = keys.none;
if (std.meta.intToEnum(keys, e.key.keysym.sym)) |val| {
key = val;
} else |err| {}
var mode = modes.mouse;
if (std.meta.intToEnum(modes, e.type)) |val| {
mode = val;
} else |err| {}
var r: event = event{
.key = key,
.mode = mode,
};
return r;
}
const event = struct {
key: keys,
mode: modes,
};
pub const modes = enum(u32) {
mouse = sdl.SDL_MOUSEMOTION,
window = sdl.SDL_WINDOWEVENT,
quit = sdl.SDL_QUIT,
key = sdl.SDL_KEYDOWN,
};
pub fn quit(i: instance) void {
sdl.SDL_DestroyRenderer(i.renderer);
sdl.SDL_DestroyWindow(i.window);
sdl.SDL_Quit();
}
pub const keys = enum(i32) {
none = sdl.SDLK_UNKNOWN,
w = sdl.SDLK_w,
s = sdl.SDLK_s,
q = sdl.SDLK_q,
up = sdl.SDLK_UP,
down = sdl.SDLK_DOWN,
left = sdl.SDLK_LEFT,
right = sdl.SDLK_RIGHT,
};
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