const std = @import("std");

const minifb = @import("minifb");

const Width = 800;
const Height = 600;

fn grey(value: u8) u32 {
    return minifb.rgb(value, value, value);
}

pub fn main() anyerror!void {
    std.log.info("All your codebase are belong to us.", .{});
    var win = minifb.Window.open("Hello minifb-zig", Width, Height) catch unreachable;

    var color: u32 = grey(0);
    const deltaColor = grey(1);
    var increasing = true;
    var rawBuffer: [Width*Height]u32 = undefined;
    const buffer = rawBuffer[0..rawBuffer.len];
    std.mem.set(u32, buffer, color);

    while (win.waitSync()) {
        if (increasing) {
            if (color < grey(255)) {
                color += deltaColor;
            } else {
                increasing = false;
            }
        } else {
            if (color > grey(0)) {
                color -= deltaColor;
            } else {
                increasing = true;
            }
        }
        std.mem.set(u32, buffer, color);
        var i: u32 = 0;
        while (i < Width) {
            buffer[i] = minifb.rgb(255,0,0);
            i += 1;
        }
        _ = win.update(buffer) catch unreachable;
    }
}