path: root/src/rectangle.cpp

/*
 * Copyright 2022 Frederico de Oliveira Linhares
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "rectangle.hpp"

#include "vector_3d.hpp"
#include "view_2d.hpp"
#include "view_3d.hpp"

void
cg_free_rectangle(mrb_state *mrb, void* obj)
{
  auto ptr = static_cast<std::shared_ptr<VK::Rectangle>*>(obj);

  ptr->~shared_ptr();
  mrb_free(mrb, ptr);
}

const struct mrb_data_type cg_rectangle_type = {
  "CG_Rectangle", cg_free_rectangle };

static mrb_value
cg_cRectangle_initialize(mrb_state *mrb, mrb_value self)
{
  mrb_float x, y, width, height;
  std::shared_ptr<VK::Rectangle> *ptr;

  mrb_get_args(mrb, "ffff", &x, &y, &width, &height);
  ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);
  if(ptr) mrb_free(mrb, ptr);
  ptr = (std::shared_ptr<VK::Rectangle>*)mrb_malloc(
    mrb, sizeof(std::shared_ptr<VK::Rectangle>));

  new(ptr)std::shared_ptr<VK::Rectangle>(
    std::make_shared<VK::Rectangle>(x, y, width, height));

  mrb_data_init(self, ptr, &cg_rectangle_type);
  return self;
}

static mrb_value
cg_cRectangle_get_x(mrb_state *mrb, mrb_value self)
{
  auto ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);

  return mrb_float_value(mrb, (*ptr)->x);
}

static mrb_value
cg_cRectangle_set_x(mrb_state *mrb, mrb_value self)
{
  mrb_float x;
  auto ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);

  mrb_get_args(mrb, "f", &x);

  (*ptr)->x = x;

  return mrb_float_value(mrb, (*ptr)->x);
}

static mrb_value
cg_cRectangle_get_y(mrb_state *mrb, mrb_value self)
{
  auto ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);

  return mrb_float_value(mrb, (*ptr)->y);
}

static mrb_value
cg_cRectangle_set_y(mrb_state *mrb, mrb_value self)
{
  mrb_float y;
  auto ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);

  mrb_get_args(mrb, "f", &y);

  (*ptr)->y = y;

  return mrb_float_value(mrb, (*ptr)->y);
}

static mrb_value
cg_cRectangle_get_width(mrb_state *mrb, mrb_value self)
{
  auto ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);

  return mrb_float_value(mrb, (*ptr)->width);
}

static mrb_value
cg_cRectangle_set_width(mrb_state *mrb, mrb_value self)
{
  mrb_float width;
  auto ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);

  mrb_get_args(mrb, "f", &width);

  (*ptr)->width = width;

  return mrb_float_value(mrb, (*ptr)->width);
}

static mrb_value
cg_cRectangle_get_height(mrb_state *mrb, mrb_value self)
{
  auto ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);

  return mrb_float_value(mrb, (*ptr)->height);
}

static mrb_value
cg_cRectangle_set_height(mrb_state *mrb, mrb_value self)
{
  mrb_float height;
  auto ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);

  mrb_get_args(mrb, "f", &height);

  (*ptr)->height = height;

  return mrb_float_value(mrb, (*ptr)->height);
}

static mrb_value
cg_cRectangle_align_vertically(mrb_state *mrb, mrb_value self)
{
  std::shared_ptr<VK::Rectangle> *ptr, *that;

  mrb_get_args(mrb, "d", &that, &cg_rectangle_type);
  ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);

  return mrb_bool_value((*ptr)->align_vertically(**that));
}

static mrb_value
cg_cRectangle_align_horizontally(mrb_state *mrb, mrb_value self)
{
  std::shared_ptr<VK::Rectangle> *ptr, *that;

  mrb_get_args(mrb, "d", &that, &cg_rectangle_type);
  ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);

  return mrb_bool_value((*ptr)->align_horizontally(**that));
}

static mrb_value
cg_cRectangle_collide(mrb_state *mrb, mrb_value self)
{
  std::shared_ptr<VK::Rectangle> *ptr, *that;

  mrb_get_args(mrb, "d", &that, &cg_rectangle_type);
  ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);

  return mrb_bool_value((*ptr)->collide(**that));
}

static mrb_value
cg_cRectangle_draw(mrb_state *mrb, mrb_value self)
{
  mrb_value view_value;
  VK::View2D *view_2d;
  std::shared_ptr<glm::vec3> *color;
  auto ptr = (std::shared_ptr<VK::Rectangle>*)DATA_PTR(self);

  mrb_get_args(mrb, "od", &view_value, &color, &cg_vector_3d_type);

  view_2d = cg_cView_to_view_2d(mrb, view_value);

  VK::UBOModel2D model;
  model.color = **color;
  (*ptr)->ub_rectangle[cg_core.vk_swapchain->current_frame].copy_data(&model);
  (*ptr)->update_vertex_buffer();
  auto &rectangles = view_2d->rectangles_to_draw[
    cg_core.vk_swapchain->current_frame];
  rectangles.push_back(*ptr);

  return self;
}

void
cg_rectangle_init(mrb_state *mrb)
{
  RClass *cg_m, *cg_cRectangle;

  cg_m = mrb_module_get(mrb, "CandyGear");
  cg_cRectangle = mrb_define_class_under(
    mrb, cg_m, "Rectangle", mrb->object_class);
  MRB_SET_INSTANCE_TT(cg_cRectangle, MRB_TT_DATA);
  mrb_define_method(
    mrb, cg_cRectangle, "initialize", cg_cRectangle_initialize,
    MRB_ARGS_REQ(4));
  mrb_define_method(
    mrb, cg_cRectangle, "x", cg_cRectangle_get_x, MRB_ARGS_NONE());
  mrb_define_method(
    mrb, cg_cRectangle, "x=", cg_cRectangle_set_x, MRB_ARGS_REQ(1));
  mrb_define_method(
    mrb, cg_cRectangle, "y", cg_cRectangle_get_y, MRB_ARGS_NONE());
  mrb_define_method(
    mrb, cg_cRectangle, "y=", cg_cRectangle_set_y, MRB_ARGS_REQ(1));
  mrb_define_method(
    mrb, cg_cRectangle, "width", cg_cRectangle_get_width, MRB_ARGS_NONE());
  mrb_define_method(
    mrb, cg_cRectangle, "width=", cg_cRectangle_set_width, MRB_ARGS_REQ(1));
  mrb_define_method(
    mrb, cg_cRectangle, "height", cg_cRectangle_get_height, MRB_ARGS_NONE());
  mrb_define_method(
    mrb, cg_cRectangle, "height=", cg_cRectangle_set_height, MRB_ARGS_REQ(1));
  mrb_define_method(
    mrb, cg_cRectangle, "align_vertically?", cg_cRectangle_align_vertically,
    MRB_ARGS_REQ(1));
  mrb_define_method(
    mrb, cg_cRectangle, "align_horizontally?",
    cg_cRectangle_align_horizontally, MRB_ARGS_REQ(1));
  mrb_define_method(
    mrb, cg_cRectangle, "collide?", cg_cRectangle_collide, MRB_ARGS_REQ(1));
  mrb_define_method(
    mrb, cg_cRectangle, "draw", cg_cRectangle_draw, MRB_ARGS_REQ(2));
}