feat: implemented chunking

modules/terrain_editor/terrain_chunk.cpp

@@ -0,0 +1,50 @@
+#include "terrain_chunk.h"
+#include "terrain_editor/terrain_mesh_generator.h"
+
+void TerrainChunk::_bind_methods() {}
+
+void TerrainChunk::ready() {
+	if ((this->generator = cast_to<TerrainMeshGenerator>(get_parent()))) {
+		this->generator->connect(TerrainMeshGenerator::sig_primitives_changed, callable_mp(this, &self_type::on_terrain_changed));
+	} else {
+		print_error(vformat("Chunk %s ready without generator.", get_path()));
+		return;
+	}
+	this->set_mesh(this->lod1);
+	on_terrain_changed();
+}
+
+void TerrainChunk::on_terrain_changed() {
+	if (this->generator) {
+		Vector3 const position{ get_global_position() };
+		this->generator->generate_grid({ { position.x, position.z }, { this->size, this->size } }, this->mesh, this->lod1_detail);
+	}
+}
+
+void TerrainChunk::_notification(int what) {
+	switch (what) {
+		default:
+			return;
+		case NOTIFICATION_READY:
+			ready();
+			return;
+	}
+}
+
+void TerrainChunk::set_size(float size) {
+	this->size = size;
+	on_terrain_changed();
+}
+
+float TerrainChunk::get_size() const {
+	return this->size;
+}
+
+void TerrainChunk::set_lod1_detail(int detail) {
+	this->lod1_detail = detail;
+	on_terrain_changed();
+}
+
+int TerrainChunk::get_lod1_detail() const {
+	return this->lod1_detail;
+}