feat Render sprite in a 3D position

1 files changed, 82 insertions, 0 deletions

diff --git a/src/sprite_3d.cpp b/src/sprite_3d.cpp
new file mode 100644
index 0000000..3e4e29d
--- /dev/null
+++ b/src/sprite_3d.cpp
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2022-2023 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 "sprite_3d.hpp"
+
+#include "sprite.hpp"
+#include "vector_3d.hpp"
+
+void
+cg_free_sprite_3d(mrb_state *mrb, void *obj)
+{
+  auto ptr = static_cast<std::shared_ptr<VK::Sprite3D>*>(obj);
+
+  ptr->~shared_ptr();
+  mrb_free(mrb, ptr);
+}
+
+const struct mrb_data_type cg_sprite_3d_type = {
+  "CG_Sprite3D", cg_free_sprite_3d };
+
+static mrb_value
+cg_cSprite3D_initialize(mrb_state *mrb, mrb_value self)
+{
+  std::shared_ptr<VK::Sprite> *sprite;
+  std::shared_ptr<glm::vec3> *position;
+  mrb_float w, h;
+  std::shared_ptr<VK::Sprite3D> *ptr;
+
+  mrb_get_args(mrb, "ddff", &sprite, &cg_sprite_type,
+	       &position, &cg_vector_3d_type, &w, &h);
+  ptr = (std::shared_ptr<VK::Sprite3D>*)DATA_PTR(self);
+  if(ptr) mrb_free(mrb, ptr);
+  ptr = (std::shared_ptr<VK::Sprite3D>*)mrb_malloc(
+    mrb, sizeof(std::shared_ptr<VK::Sprite3D>));
+
+  glm::vec3 size{w, h, 0.0};
+  new(ptr)std::shared_ptr<VK::Sprite3D>(
+    std::make_shared<VK::Sprite3D>(*sprite, *position, size));
+
+  mrb_data_init(self, ptr, &cg_sprite_3d_type);
+  return self;
+}
+
+static mrb_value
+cg_cSprite3D_draw(mrb_state *mrb, mrb_value self)
+{
+  auto ptr = (std::shared_ptr<VK::Sprite3D>*)DATA_PTR(self);
+
+  auto &sprites_3d_to_draw = cg_core.vk_renderer->sprites_3d_to_draw[
+    cg_core.vk_swapchain->current_frame];
+  sprites_3d_to_draw.emplace_back(*ptr);
+
+  return self;
+}
+
+void
+cg_sprite_3d_init(mrb_state *mrb)
+{
+  struct RClass *cg_m, *cg_cSprite3D;
+
+  cg_m = mrb_module_get(mrb, "CandyGear");
+  cg_cSprite3D = mrb_define_class_under(
+    mrb, cg_m, "Sprite3D", mrb->object_class);
+  MRB_SET_INSTANCE_TT(cg_cSprite3D, MRB_TT_DATA);
+  mrb_define_method(
+    mrb, cg_cSprite3D, "initialize", cg_cSprite3D_initialize, MRB_ARGS_REQ(3));
+  mrb_define_method(
+    mrb, cg_cSprite3D, "draw", cg_cSprite3D_draw, MRB_ARGS_NONE());
+}