mruby.zig

pub const Color = struct {
    a: u8,
    r: u8,
    g: u8,
    b: u8
};

var new_mrb = mruby.open();
var mrb_color_class = new_mrb.define_class("Color", new_mrb.object_class());
new_mrb.define_method(mrb_color_class, "initialize", mrb_initialize_color, .{ .req = 3 });

const mrb_color_descriptor = mruby.mrb_data_type {
    .struct_name = "Color",
    .dfree = mruby.mrb_free
};

pub export fn mrb_initialize_color(mrb: *mruby.mrb_state, self: mruby.mrb_value) mruby.mrb_value {
    var r = 0;
    var g = 0;
    var b = 0;
    var color_data = @ptrCast(*Color, mruby.mrb_alloc(mrb, @sizeOf(Color)));
    const num_args = mrb.get_args("iii", .{ &r, &g, &b });

    color_data.* = Color {
        .r = @intCast(u8, r),
        .g = @intCast(u8, g),
        .b = @intCast(u8, b),
        .a = @intCast(u8, 0),
    };

    const data_obj = try mrb.data_object_alloc(mrb_color_class, color_data, &mrb_color_descriptor);
    var instance = data_obj_to_value(); // Not sure how to do this
    return instance;
}