log := fn(msg: ^u8): void return @eca(0, msg)

absf := fn(x: f32): f32 {
    if (x < 0) {
        return -x
    }
    return x
}

sqrt := fn(x: f32, low: f32, high: f32): f32 {
    mid := (high - low)/2.0
    if (absf(mid * mid - x) < 0.01) {
        return mid
    }
    if (mid * mid > x) {
        return sqrt(x, low, mid)
    }
    if (mid * mid < x) {
        return sqrt(x, mid, high)
    }
    return -9999.0
}

is_filled := fn(x: uint, y: uint, center_x: f32, center_y: f32, inner_radius: f32, outer_radius: f32): bool {
     x_f := @as(f32, @floatcast(@itf(@bitcast(x))))
     y_f := @as(f32, @floatcast(@itf(@bitcast(y))))
     x_diff := x_f - center_x
     y_diff := x_f - center_y
     dist := sqrt(x_diff * x_diff + y_diff * y_diff)
     if (dist < outer_radius) {
        if (dist > inner_radius) {
            return true
        }
    }
    return false
}

buffer := @as([u8; 61], idk)

render_row := fn(y: uint): void {
    x := 0
    loop {
        if (x > 60) {
            break
        }
        buffer[x] = 32
    }
    x = 0
    loop {
        if (x > 60) {
            break
        }
        if (is_filled(x, y, 30.0, 30.0, 10.0, 20.0)) {
            buffer[x] = 35
        }
        x = x + 1
    }
    log(buffer[0]) 
}

main := fn(): int {
    y := 0
    loop {
        if (y > 60) {
            break
        }
        render_row(y)
        y = y + 1
    }
    return 0
}