terraman_2d/world/default/terra_chunk_default_2d.cpp

/*
Copyright (c) 2019-2021 Péter Magyar

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

#include "terra_chunk_default_2d.h"

#include "../../defines.h"

#include visual_server_h
#include physics_server_h

#include "../../../opensimplex/open_simplex_noise.h"
#include "../../meshers/default/terra_mesher_default_2d.h"
#include "../terra_world_2d.h"

#include "../jobs/terra_job_2d.h"

#include "terra_world_default_2d.h"

#include "../jobs/terra_light_job_2d.h"
#include "../jobs/terra_prop_job_2d.h"
#include "../jobs/terra_terrarin_job_2d.h"

const String TerraChunkDefault2D::BINDING_STRING_BUILD_FLAGS = "Use Isolevel,Use Lighting,Use AO,Use RAO,Generate AO,Generate RAO,Bake Lights,Create Collider,Create Lods";

_FORCE_INLINE_ int TerraChunkDefault2D::get_build_flags() const {
	return _build_flags;
}
_FORCE_INLINE_ void TerraChunkDefault2D::set_build_flags(const int flags) {
	_build_flags = flags;
}

bool TerraChunkDefault2D::get_lights_dirty() const {
	return _lights_dirty;
}
void TerraChunkDefault2D::set_lights_dirty(const bool value) {
	_lights_dirty = value;
}

int TerraChunkDefault2D::get_lod_num() const {
	return _lod_num;
}
void TerraChunkDefault2D::set_lod_num(const int value) {
	_lod_num = value;
}

int TerraChunkDefault2D::get_current_lod_level() const {
	return _current_lod_level;
}
void TerraChunkDefault2D::set_current_lod_level(const int value) {
	_current_lod_level = value;

	if ((_build_flags & BUILD_FLAG_CREATE_LODS) == 0)
		return;

	if (_current_lod_level < 0)
		_current_lod_level = 0;

	int lod_num = mesh_rid_get_count(MESH_INDEX_TERRARIN, MESH_TYPE_INDEX_MESH_INSTANCE);

	if (_current_lod_level > lod_num)
		_current_lod_level = lod_num;

	for (int i = 0; i < lod_num; ++i) {
		bool vis = false;

		if (i == _current_lod_level)
			vis = true;

		RID rid = mesh_rid_get_index(MESH_INDEX_TERRARIN, MESH_TYPE_INDEX_MESH_INSTANCE, i);

		if (rid != RID())
			VisualServer::get_singleton()->instance_set_visible(rid, vis);

		rid = mesh_rid_get_index(MESH_INDEX_PROP, MESH_TYPE_INDEX_MESH_INSTANCE, i);

		if (rid != RID())
			VisualServer::get_singleton()->instance_set_visible(rid, vis);
	}
}

void TerraChunkDefault2D::emit_build_finished() {
	emit_signal("mesh_generation_finished", this);

	if (_voxel_world != NULL) {
		_voxel_world->on_chunk_mesh_generation_finished(this);
	}
}

//Meshes
Dictionary TerraChunkDefault2D::mesh_rids_get() {
	return _rids;
}
void TerraChunkDefault2D::mesh_rids_set(const Dictionary &rids) {
	_rids = rids;
}

RID TerraChunkDefault2D::mesh_rid_get(const int mesh_index, const int mesh_type_index) {
	if (!_rids.has(mesh_index))
		return RID();

	Dictionary m = _rids[mesh_index];

	if (!m.has(mesh_type_index))
		return RID();

	Variant v = m[mesh_type_index];

#if VERSION_MAJOR > 3
	if (v.get_type() != Variant::RID)
		return RID();
#else
	if (v.get_type() != Variant::_RID)
		return RID();
#endif

	return v;
}
void TerraChunkDefault2D::mesh_rid_set(const int mesh_index, const int mesh_type_index, RID value) {
	if (!_rids.has(mesh_index))
		_rids[mesh_index] = Dictionary();

	Dictionary m = _rids[mesh_index];

	if (!m.has(mesh_type_index)) {
		m[mesh_type_index] = value;
		_rids[mesh_index] = m;
		return;
	}

	Variant v = m[mesh_type_index];

#if VERSION_MAJOR > 3
	ERR_FAIL_COND(v.get_type() != Variant::RID);
#else
	ERR_FAIL_COND(v.get_type() != Variant::_RID);
#endif

	m[mesh_type_index] = value;
	_rids[mesh_index] = m;
}
RID TerraChunkDefault2D::mesh_rid_get_index(const int mesh_index, const int mesh_type_index, const int index) {
	if (!_rids.has(mesh_index))
		return RID();

	Dictionary m = _rids[mesh_index];

	if (!m.has(mesh_type_index))
		return RID();

	Variant v = m[mesh_type_index];

	if (v.get_type() != Variant::ARRAY)
		return RID();

	Array arr = v;

	ERR_FAIL_INDEX_V(index, arr.size(), RID());

	return arr[index];
}
void TerraChunkDefault2D::mesh_rid_set_index(const int mesh_index, const int mesh_type_index, const int index, RID value) {
	if (!_rids.has(mesh_index))
		_rids[mesh_index] = Dictionary();

	Dictionary m = _rids[mesh_index];

	if (!m.has(mesh_type_index)) {
		Array arr;
		arr.resize(index + 1);
		arr[index] = value;

		m[mesh_type_index] = arr;
		_rids[mesh_index] = m;
		return;
	}

	Variant v = m[mesh_type_index];

	ERR_FAIL_COND(v.get_type() != Variant::ARRAY);

	Array arr = m[mesh_type_index];

	if (arr.size() <= index)
		arr.resize(index + 1);

	arr[index] = value;

	m[mesh_type_index] = arr;
	_rids[mesh_index] = m;
}
int TerraChunkDefault2D::mesh_rid_get_count(const int mesh_index, const int mesh_type_index) {
	if (!_rids.has(mesh_index))
		return 0;

	Dictionary m = _rids[mesh_index];

	if (!m.has(mesh_type_index))
		return 0;

	Variant v = m[mesh_type_index];

	if (v.get_type() != Variant::ARRAY)
		return 0;

	Array arr = v;

	return arr.size();
}
void TerraChunkDefault2D::mesh_rids_clear(const int mesh_index, const int mesh_type_index) {
	if (!_rids.has(mesh_index))
		return;

	Dictionary m = _rids[mesh_index];

	if (!m.has(mesh_type_index))
		return;

	m.erase(mesh_type_index);
}
Array TerraChunkDefault2D::meshes_get(const int mesh_index, const int mesh_type_index) {
	if (!_rids.has(mesh_index))
		return Array();

	Dictionary m = _rids[mesh_index];

	if (!m.has(mesh_type_index))
		return Array();

	Variant v = m[mesh_type_index];

	if (v.get_type() != Variant::ARRAY)
		return Array();

	return v;
}
void TerraChunkDefault2D::meshes_set(const int mesh_index, const int mesh_type_index, const Array &meshes) {
	if (!_rids.has(mesh_index))
		_rids[mesh_index] = Dictionary();

	Dictionary m = _rids[mesh_index];

	m[mesh_type_index] = meshes;
	_rids[mesh_index] = m;
}
bool TerraChunkDefault2D::meshes_has(const int mesh_index, const int mesh_type_index) {
	if (!_rids.has(mesh_index))
		return false;

	Dictionary m = _rids[mesh_index];

	if (!m.has(mesh_type_index))
		return false;

	return true;
}

void TerraChunkDefault2D::rids_clear() {
	_rids.clear();
}

void TerraChunkDefault2D::rids_free() {
	List<Variant> keys;

	_rids.get_key_list(&keys);

	for (List<Variant>::Element *E = keys.front(); E; E = E->next()) {
		Variant v = E->get();

		if (v.get_type() != Variant::INT)
			continue;

		free_index(v);
	}
}

void TerraChunkDefault2D::meshes_create(const int mesh_index, const int mesh_count) {
	ERR_FAIL_COND(_voxel_world == NULL);
	ERR_FAIL_COND(!get_library().is_valid());

	if (!_rids.has(mesh_index))
		_rids[mesh_index] = Dictionary();

	Dictionary m = _rids[mesh_index];

	ERR_FAIL_COND(m.has(MESH_TYPE_INDEX_MESH));
	ERR_FAIL_COND(m.has(MESH_TYPE_INDEX_MESH_INSTANCE));

	Array am;
	Array ami;

	for (int i = 0; i < mesh_count; ++i) {
		RID mesh_instance_rid = VS::get_singleton()->instance_create();

		if (get_voxel_world()->GET_WORLD().is_valid())
			VS::get_singleton()->instance_set_scenario(mesh_instance_rid, get_voxel_world()->GET_WORLD()->get_scenario());

		RID mesh_rid = VS::get_singleton()->mesh_create();

		VS::get_singleton()->instance_set_base(mesh_instance_rid, mesh_rid);

		VS::get_singleton()->instance_set_transform(mesh_instance_rid, get_transform());

		if (i != 0)
			VS::get_singleton()->instance_set_visible(mesh_instance_rid, false);

		am.push_back(mesh_rid);
		ami.push_back(mesh_instance_rid);
	}

	m[MESH_TYPE_INDEX_MESH] = am;
	m[MESH_TYPE_INDEX_MESH_INSTANCE] = ami;

	_rids[mesh_index] = m;
}
void TerraChunkDefault2D::meshes_free(const int mesh_index) {
	if (!_rids.has(mesh_index))
		return;

	Dictionary m = _rids[mesh_index];
	RID rid;

	if (m.has(MESH_TYPE_INDEX_MESH)) {
		Array a = m[MESH_TYPE_INDEX_MESH];

		for (int i = 0; i < a.size(); ++i) {
			RID r = a[i];

			if (r != rid) {
				VS::get_singleton()->free(r);
			}
		}
	}

	if (m.has(MESH_TYPE_INDEX_MESH_INSTANCE)) {
		Array a = m[MESH_TYPE_INDEX_MESH_INSTANCE];

		for (int i = 0; i < a.size(); ++i) {
			RID r = a[i];

			if (r != rid) {
				VS::get_singleton()->free(r);
			}
		}
	}

	m.erase(MESH_TYPE_INDEX_MESH);
	m.erase(MESH_TYPE_INDEX_MESH_INSTANCE);
}

void TerraChunkDefault2D::colliders_create(const int mesh_index, const int layer_mask) {
	ERR_FAIL_COND(_voxel_world == NULL);
	ERR_FAIL_COND(PhysicsServer::get_singleton()->is_flushing_queries());
	//ERR_FAIL_COND(!get_voxel_world()->is_inside_tree());

	if (!_rids.has(mesh_index))
		_rids[mesh_index] = Dictionary();

	Dictionary m = _rids[mesh_index];

	ERR_FAIL_COND(m.has(MESH_TYPE_INDEX_BODY));
	ERR_FAIL_COND(m.has(MESH_TYPE_INDEX_SHAPE));

	RID shape_rid = PhysicsServer::get_singleton()->shape_create(PhysicsServer::SHAPE_CONCAVE_POLYGON);
	RID body_rid = PhysicsServer::get_singleton()->body_create(PhysicsServer::BODY_MODE_STATIC);

	PhysicsServer::get_singleton()->body_set_collision_layer(body_rid, layer_mask);
	PhysicsServer::get_singleton()->body_set_collision_mask(body_rid, layer_mask);

	PhysicsServer::get_singleton()->body_add_shape(body_rid, shape_rid);

	PhysicsServer::get_singleton()->body_set_state(body_rid, PhysicsServer::BODY_STATE_TRANSFORM, get_transform());

	if (get_voxel_world()->is_inside_tree() && get_voxel_world()->is_inside_world()) {
		Ref<World> world = get_voxel_world()->GET_WORLD();

		if (world.is_valid() && world->get_space() != RID())
			PhysicsServer::get_singleton()->body_set_space(body_rid, world->get_space());
	}

	m[MESH_TYPE_INDEX_BODY] = body_rid;
	m[MESH_TYPE_INDEX_SHAPE] = shape_rid;

	_rids[mesh_index] = m;
}
void TerraChunkDefault2D::colliders_create_area(const int mesh_index, const int layer_mask) {
	ERR_FAIL_COND(_voxel_world == NULL);
	ERR_FAIL_COND(PhysicsServer::get_singleton()->is_flushing_queries());

	if (!_rids.has(mesh_index))
		_rids[mesh_index] = Dictionary();

	Dictionary m = _rids[mesh_index];

	ERR_FAIL_COND(m.has(MESH_TYPE_INDEX_AREA));
	ERR_FAIL_COND(m.has(MESH_TYPE_INDEX_SHAPE));

	RID shape_rid = PhysicsServer::get_singleton()->shape_create(PhysicsServer::SHAPE_CONCAVE_POLYGON);
	RID area_rid = PhysicsServer::get_singleton()->area_create();

	PhysicsServer::get_singleton()->area_attach_object_instance_id(area_rid, _voxel_world->get_instance_id());
	PhysicsServer::get_singleton()->area_set_param(area_rid, PhysicsServer::AREA_PARAM_GRAVITY, 9.8);
	PhysicsServer::get_singleton()->area_set_param(area_rid, PhysicsServer::AREA_PARAM_GRAVITY_VECTOR, Vector3(0, -1, 0));

	//PhysicsServer::get_singleton()->area_set_monitor_callback(area_rid, this, "_body_area_inout");
	//PhysicsServer::get_singleton()->area_set_area_monitor_callback(area_rid, this, "_body_area_area_inout");
	//PhysicsServer::get_singleton()->area_set_monitorable(area_rid, true);

	PhysicsServer::get_singleton()->area_set_collision_layer(area_rid, layer_mask);
	PhysicsServer::get_singleton()->area_set_collision_mask(area_rid, layer_mask);

	if (get_voxel_world()->is_inside_tree() && get_voxel_world()->is_inside_world()) {
		Ref<World> world = get_voxel_world()->GET_WORLD();

		if (world.is_valid() && world->get_space() != RID())
			PhysicsServer::get_singleton()->area_set_space(area_rid, world->get_space());
	}

	PhysicsServer::get_singleton()->area_add_shape(area_rid, shape_rid, get_transform());

	m[MESH_TYPE_INDEX_AREA] = area_rid;
	m[MESH_TYPE_INDEX_SHAPE] = shape_rid;

	_rids[mesh_index] = m;
}

void TerraChunkDefault2D::colliders_free(const int mesh_index) {
	if (!_rids.has(mesh_index))
		return;

	Dictionary m = _rids[mesh_index];
	RID rid;

	if (m.has(MESH_TYPE_INDEX_SHAPE)) {
		RID r = m[MESH_TYPE_INDEX_SHAPE];

		PhysicsServer::get_singleton()->free(r);
	}

	if (m.has(MESH_TYPE_INDEX_BODY)) {
		RID r = m[MESH_TYPE_INDEX_BODY];

		PhysicsServer::get_singleton()->free(r);
	}

	m.erase(MESH_TYPE_INDEX_SHAPE);
	m.erase(MESH_TYPE_INDEX_BODY);

	_rids[mesh_index] = m;
}

void TerraChunkDefault2D::free_index(const int mesh_index) {
	meshes_free(mesh_index);
	colliders_free(mesh_index);
}

void TerraChunkDefault2D::update_transforms() {
	RID empty_rid;
	Transform t = get_transform();

	List<Variant> keys;

	_rids.get_key_list(&keys);

	for (List<Variant>::Element *E = keys.front(); E; E = E->next()) {
		Variant v = E->get();

		if (v.get_type() != Variant::INT)
			continue;

		Dictionary d = _rids[v];

		if (d.has(MESH_TYPE_INDEX_MESH_INSTANCE)) {
			Array arr = d[MESH_TYPE_INDEX_MESH_INSTANCE];

			for (int i = 0; i < arr.size(); ++i) {
				RID rid = arr[i];

				if (rid != empty_rid)
					VS::get_singleton()->instance_set_transform(rid, get_transform());
			}
		}

		if (d.has(MESH_TYPE_INDEX_BODY)) {
			RID rid = d[MESH_TYPE_INDEX_BODY];

			if (rid != empty_rid)
				PhysicsServer::get_singleton()->body_set_state(rid, PhysicsServer::BODY_STATE_TRANSFORM, t);
		}

		if (d.has(MESH_TYPE_INDEX_AREA)) {
			RID rid = d[MESH_TYPE_INDEX_AREA];

			if (rid != empty_rid)
				PhysicsServer::get_singleton()->area_set_shape_transform(rid, 0, t);
		}
	}

	for (int i = 0; i < collider_get_count(); ++i) {
		PhysicsServer::get_singleton()->body_set_state(collider_get_body(i), PhysicsServer::BODY_STATE_TRANSFORM, get_transform() * collider_get_transform(i));
	}

	if (_debug_mesh_instance != RID()) {
		VS::get_singleton()->instance_set_transform(_debug_mesh_instance, get_transform());
	}
}

//Lights
Ref<TerraLight2D> TerraChunkDefault2D::get_light(const int index) {
	ERR_FAIL_INDEX_V(index, _lights.size(), Ref<TerraLight2D>());

	return _lights.get(index);
}
int TerraChunkDefault2D::get_light_count() const {
	return _lights.size();
}

void TerraChunkDefault2D::debug_mesh_allocate() {
	if (_debug_mesh_rid == RID()) {
		_debug_mesh_rid = VisualServer::get_singleton()->mesh_create();
	}

	if (_debug_mesh_instance == RID()) {
		_debug_mesh_instance = VisualServer::get_singleton()->instance_create();

		if (get_voxel_world()->GET_WORLD().is_valid())
			VS::get_singleton()->instance_set_scenario(_debug_mesh_instance, get_voxel_world()->GET_WORLD()->get_scenario());

		VS::get_singleton()->instance_set_base(_debug_mesh_instance, _debug_mesh_rid);
		VS::get_singleton()->instance_set_transform(_debug_mesh_instance, get_transform());
		VS::get_singleton()->instance_set_visible(_debug_mesh_instance, true);
	}
}
void TerraChunkDefault2D::debug_mesh_free() {
	if (_debug_mesh_instance != RID()) {
		VisualServer::get_singleton()->free(_debug_mesh_instance);
	}

	if (_debug_mesh_rid != RID()) {
		VisualServer::get_singleton()->free(_debug_mesh_rid);
	}
}
bool TerraChunkDefault2D::debug_mesh_has() {
	return _debug_mesh_rid != RID();
}
void TerraChunkDefault2D::debug_mesh_clear() {
	if (_debug_mesh_rid != RID()) {
		VisualServer::get_singleton()->mesh_clear(_debug_mesh_rid);
	}
}
void TerraChunkDefault2D::debug_mesh_array_clear() {
	_debug_mesh_array.resize(0);
}
void TerraChunkDefault2D::debug_mesh_add_vertices_to(const PoolVector3Array &arr) {
	_debug_mesh_array.append_array(arr);

	if (_debug_mesh_array.size() % 2 == 1) {
		_debug_mesh_array.append(_debug_mesh_array[_debug_mesh_array.size() - 1]);
	}
}
void TerraChunkDefault2D::debug_mesh_send() {
	debug_mesh_allocate();
	debug_mesh_clear();

	if (_debug_mesh_array.size() == 0)
		return;

	SceneTree *st = SceneTree::get_singleton();

	Array arr;
	arr.resize(VisualServer::ARRAY_MAX);
	arr[VisualServer::ARRAY_VERTEX] = _debug_mesh_array;

	VisualServer::get_singleton()->mesh_add_surface_from_arrays(_debug_mesh_rid, VisualServer::PRIMITIVE_LINES, arr);

	if (st) {
		VisualServer::get_singleton()->mesh_surface_set_material(_debug_mesh_rid, 0, SceneTree::get_singleton()->get_debug_collision_material()->get_rid());
	}

	debug_mesh_array_clear();
}

void TerraChunkDefault2D::draw_cross_voxels(Vector3 pos) {
	pos *= _voxel_scale;

	int size = _debug_mesh_array.size();
	_debug_mesh_array.resize(_debug_mesh_array.size() + 6);

	_debug_mesh_array.set(size, pos + Vector3(0, 0, -0.2));
	_debug_mesh_array.set(size + 1, pos + Vector3(0, 0, 0.2));

	_debug_mesh_array.set(size + 2, pos + Vector3(0, -0.2, 0));
	_debug_mesh_array.set(size + 3, pos + Vector3(0, 0.2, 0));

	_debug_mesh_array.set(size + 4, pos + Vector3(-0.2, 0, 0));
	_debug_mesh_array.set(size + 5, pos + Vector3(0.2, 0, 0));
}

void TerraChunkDefault2D::draw_cross_voxels_fill(Vector3 pos, float fill) {
	pos *= _voxel_scale;

	int size = _debug_mesh_array.size();
	_debug_mesh_array.resize(_debug_mesh_array.size() + 6);

	_debug_mesh_array.set(size, pos + Vector3(0, 0, -0.2 * fill));
	_debug_mesh_array.set(size + 1, pos + Vector3(0, 0, 0.2 * fill));

	_debug_mesh_array.set(size + 2, pos + Vector3(0, -0.2 * fill, 0));
	_debug_mesh_array.set(size + 3, pos + Vector3(0, 0.2 * fill, 0));

	_debug_mesh_array.set(size + 4, pos + Vector3(-0.2 * fill, 0, 0));
	_debug_mesh_array.set(size + 5, pos + Vector3(0.2 * fill, 0, 0));
}

void TerraChunkDefault2D::draw_debug_voxels(int max, Color color) {
	if (!debug_mesh_has()) {
		debug_mesh_allocate();
	}

	//debug_mesh_array_clear();

	//_debug_drawer->begin(Mesh::PRIMITIVE_LINES);

	int a = 0;

	int64_t sx = static_cast<int64_t>(_size_x);
	int64_t sz = static_cast<int64_t>(_size_z);

		for (int z = 0; z < sz; ++z) {
			for (int x = 0; x < sx; ++x) {
				int type = get_voxel(x, z, TerraChunkDefault2D::DEFAULT_CHANNEL_TYPE);

				if (type == 0) {
					continue;
				}

				draw_cross_voxels_fill(Vector3(x, get_voxel(x, z, TerraChunkDefault2D::DEFAULT_CHANNEL_ISOLEVEL), z), get_voxel(x, z, TerraChunkDefault2D::DEFAULT_CHANNEL_ISOLEVEL) / 255.0 * get_voxel_scale() * 2.0);

				++a;

				if (a > max) {
					break;
				}
			}
		}

	debug_mesh_send();
}

void TerraChunkDefault2D::draw_debug_voxel_lights() {
	if (!debug_mesh_has()) {
		debug_mesh_allocate();
	}

	//debug_mesh_array_clear();

	//_debug_drawer->begin(Mesh::PrimitiveType::PRIMITIVE_LINES);

	for (int i = 0; i < _lights.size(); ++i) {
		Ref<TerraLight2D> v = _lights[i];

		int pos_x = v->get_world_position_x() - (_size_x * _position_x);
		int pos_z = v->get_world_position_z() - (_size_z * _position_z);

		draw_cross_voxels_fill(Vector3(pos_x, 0, pos_z), 1.0);
	}

	debug_mesh_send();
}

void TerraChunkDefault2D::draw_debug_mdr_colliders() {
	if (!debug_mesh_has()) {
		debug_mesh_allocate();
	}

	for (int i = 0; i < collider_get_count(); ++i) {
		Ref<Shape> shape = collider_get_shape(i);

		if (!shape.is_valid())
			continue;

		Transform t = collider_get_transform(i);

		shape->add_vertices_to_array(_debug_mesh_array, t);
	}
}

void TerraChunkDefault2D::_visibility_changed(bool visible) {
	if (visible) {
		set_current_lod_level(_current_lod_level);
		return;
	}

	int lod_num = mesh_rid_get_count(MESH_INDEX_TERRARIN, MESH_TYPE_INDEX_MESH_INSTANCE);

	for (int i = 0; i < lod_num; ++i) {
		RID rid = mesh_rid_get_index(MESH_INDEX_TERRARIN, MESH_TYPE_INDEX_MESH_INSTANCE, i);

		if (rid != RID())
			VisualServer::get_singleton()->instance_set_visible(rid, false);

		rid = mesh_rid_get_index(MESH_INDEX_LIQUID, MESH_TYPE_INDEX_MESH_INSTANCE, i);

		if (rid != RID())
			VisualServer::get_singleton()->instance_set_visible(rid, false);

		rid = mesh_rid_get_index(MESH_INDEX_PROP, MESH_TYPE_INDEX_MESH_INSTANCE, i);

		if (rid != RID())
			VisualServer::get_singleton()->instance_set_visible(rid, false);
	}
}

void TerraChunkDefault2D::_exit_tree() {
	TerraChunk2D::_exit_tree();

	rids_free();
}

void TerraChunkDefault2D::_world_transform_changed() {
	TerraChunk2D::_world_transform_changed();

	update_transforms();
}

//Lights
void TerraChunkDefault2D::_bake_lights() {
	clear_baked_lights();

	for (int i = 0; i < _lights.size(); ++i) {
		bake_light(_lights.get(i));
	}
}
void TerraChunkDefault2D::_bake_light(Ref<TerraLight2D> light) {
	ERR_FAIL_COND(!light.is_valid());

	Color color = light->get_color();
	int size = light->get_size();

	int local_x = light->get_world_position_x() - (_position_x * _size_x);
	int local_y = light->get_world_position_y();
	int local_z = light->get_world_position_z() - (_position_z * _size_z);

	ERR_FAIL_COND(size < 0);

	int64_t dsx = static_cast<int64_t>(_data_size_x);
	int64_t dsy = static_cast<int64_t>(_world_height);
	int64_t dsz = static_cast<int64_t>(_data_size_z);

	uint8_t *channel_color_r = channel_get(TerraChunkDefault2D::DEFAULT_CHANNEL_LIGHT_COLOR_R);
	uint8_t *channel_color_g = channel_get(TerraChunkDefault2D::DEFAULT_CHANNEL_LIGHT_COLOR_G);
	uint8_t *channel_color_b = channel_get(TerraChunkDefault2D::DEFAULT_CHANNEL_LIGHT_COLOR_B);

	ERR_FAIL_COND(channel_color_r == NULL || channel_color_g == NULL || channel_color_b == NULL);

	for (int y = local_y - size; y <= local_y + size; ++y) {
		if (y < 0 || y >= dsy)
			continue;

		for (int z = local_z - size; z <= local_z + size; ++z) {
			if (z < 0 || z >= dsz)
				continue;

			for (int x = local_x - size; x <= local_x + size; ++x) {
				if (x < 0 || x >= dsx)
					continue;

				int lx = x - local_x;
				int ly = y - local_y;
				int lz = z - local_z;

				float str = size - (((float)lx * lx + ly * ly + lz * lz));
				str /= size;

				if (str < 0)
					continue;

				int index = get_data_index(x, z);

				int r = color.r * str * 255.0;
				int g = color.g * str * 255.0;
				int b = color.b * str * 255.0;

				r += channel_color_r[index];
				g += channel_color_g[index];
				b += channel_color_b[index];

				if (r > 255)
					r = 255;

				if (g > 255)
					g = 255;

				if (b > 255)
					b = 255;

				channel_color_r[index] = r;
				channel_color_g[index] = g;
				channel_color_b[index] = b;
			}
		}
	}
}
void TerraChunkDefault2D::_clear_baked_lights() {
	channel_fill(0, DEFAULT_CHANNEL_LIGHT_COLOR_R);
	channel_fill(0, DEFAULT_CHANNEL_LIGHT_COLOR_G);
	channel_fill(0, DEFAULT_CHANNEL_LIGHT_COLOR_B);
}
void TerraChunkDefault2D::_world_light_added(const Ref<TerraLight2D> &light) {
	_lights.push_back(light);

	set_lights_dirty(true);
}
void TerraChunkDefault2D::_world_light_removed(const Ref<TerraLight2D> &light) {
	int index = _lights.find(light);

	if (index != -1) {
		_lights.remove(index);

		set_lights_dirty(true);
	}
}

void TerraChunkDefault2D::free_chunk() {
	rids_free();
}

void TerraChunkDefault2D::_finalize_build() {
	ERR_FAIL_COND(!_library.is_valid());

#if TOOLS_ENABLED
	if (_debug_mesh_array.size() > 0) {
		debug_mesh_send();
	}
#endif

	set_current_lod_level(get_current_lod_level());

	call_deferred("update_transforms");
}

TerraChunkDefault2D::TerraChunkDefault2D() {
	_abort_build = false;

	_enabled = true;

	_lod_num = 3;
	_current_lod_level = 0;

	_build_flags = BUILD_FLAG_CREATE_COLLIDER | BUILD_FLAG_CREATE_LODS;
}

TerraChunkDefault2D::~TerraChunkDefault2D() {
	_abort_build = true;

	_lights.clear();

	debug_mesh_free();
}

void TerraChunkDefault2D::_channel_setup() {
	channel_set_count(MAX_DEFAULT_CHANNELS);
}

void TerraChunkDefault2D::_bind_methods() {
	ClassDB::bind_method(D_METHOD("get_build_flags"), &TerraChunkDefault2D::get_build_flags);
	ClassDB::bind_method(D_METHOD("set_build_flags", "value"), &TerraChunkDefault2D::set_build_flags);
	ADD_PROPERTY(PropertyInfo(Variant::INT, "build_flags", PROPERTY_HINT_FLAGS, BINDING_STRING_BUILD_FLAGS, 0), "set_build_flags", "get_build_flags");

	ClassDB::bind_method(D_METHOD("get_lights_dirty"), &TerraChunkDefault2D::get_lights_dirty);
	ClassDB::bind_method(D_METHOD("set_lights_dirty", "value"), &TerraChunkDefault2D::set_lights_dirty);
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "lights_dirty", PROPERTY_HINT_NONE, "", 0), "set_lights_dirty", "get_lights_dirty");

	ClassDB::bind_method(D_METHOD("get_lod_num"), &TerraChunkDefault2D::get_lod_num);
	ClassDB::bind_method(D_METHOD("set_lod_num"), &TerraChunkDefault2D::set_lod_num);
	ADD_PROPERTY(PropertyInfo(Variant::INT, "lod_num", PROPERTY_HINT_NONE, "", 0), "set_lod_num", "get_lod_num");

	ClassDB::bind_method(D_METHOD("get_current_lod_level"), &TerraChunkDefault2D::get_current_lod_level);
	ClassDB::bind_method(D_METHOD("set_current_lod_level"), &TerraChunkDefault2D::set_current_lod_level);
	ADD_PROPERTY(PropertyInfo(Variant::INT, "current_lod_level"), "set_current_lod_level", "get_current_lod_level");

	//Meshes
	ClassDB::bind_method(D_METHOD("get_mesh_rids"), &TerraChunkDefault2D::mesh_rids_get);
	ClassDB::bind_method(D_METHOD("set_mesh_rids", "rids"), &TerraChunkDefault2D::mesh_rids_set);
	ClassDB::bind_method(D_METHOD("clear_rids"), &TerraChunkDefault2D::rids_clear);

	ClassDB::bind_method(D_METHOD("mesh_rid_get", "mesh_index", "mesh_type_index"), &TerraChunkDefault2D::mesh_rid_get);
	ClassDB::bind_method(D_METHOD("mesh_rid_set", "mesh_index", "mesh_type_index", "value"), &TerraChunkDefault2D::mesh_rid_set);
	ClassDB::bind_method(D_METHOD("mesh_rid_get_index", "mesh_index", "mesh_type_index", "index"), &TerraChunkDefault2D::mesh_rid_get_index);
	ClassDB::bind_method(D_METHOD("mesh_rid_set_index", "mesh_index", "mesh_type_index", "index", "value"), &TerraChunkDefault2D::mesh_rid_set_index);
	ClassDB::bind_method(D_METHOD("mesh_rid_get_count", "mesh_index", "mesh_type_index"), &TerraChunkDefault2D::mesh_rid_get_count);
	ClassDB::bind_method(D_METHOD("mesh_rids_clear", "mesh_index", "mesh_type_index"), &TerraChunkDefault2D::mesh_rids_clear);
	ClassDB::bind_method(D_METHOD("meshes_get", "mesh_index", "mesh_type_index"), &TerraChunkDefault2D::meshes_get);
	ClassDB::bind_method(D_METHOD("meshes_set", "mesh_index", "mesh_type_index", "meshes"), &TerraChunkDefault2D::meshes_set);
	ClassDB::bind_method(D_METHOD("meshes_has", "mesh_index", "mesh_type_index"), &TerraChunkDefault2D::meshes_has);

	ClassDB::bind_method(D_METHOD("rids_free"), &TerraChunkDefault2D::rids_free);
	ClassDB::bind_method(D_METHOD("free_index", "mesh_index"), &TerraChunkDefault2D::free_index);

	ClassDB::bind_method(D_METHOD("meshes_create", "mesh_index", "mesh_count"), &TerraChunkDefault2D::meshes_create);
	ClassDB::bind_method(D_METHOD("meshes_free", "mesh_index"), &TerraChunkDefault2D::meshes_free);

	ClassDB::bind_method(D_METHOD("create_colliders", "mesh_index", "layer_mask"), &TerraChunkDefault2D::colliders_create, DEFVAL(1));
	ClassDB::bind_method(D_METHOD("free_colliders", "mesh_index"), &TerraChunkDefault2D::colliders_free);

	//Lights
	ClassDB::bind_method(D_METHOD("get_light", "index"), &TerraChunkDefault2D::get_light);
	ClassDB::bind_method(D_METHOD("get_light_count"), &TerraChunkDefault2D::get_light_count);

	//Debug
	ClassDB::bind_method(D_METHOD("debug_mesh_allocate"), &TerraChunkDefault2D::debug_mesh_allocate);
	ClassDB::bind_method(D_METHOD("debug_mesh_free"), &TerraChunkDefault2D::debug_mesh_free);

	ClassDB::bind_method(D_METHOD("debug_mesh_has"), &TerraChunkDefault2D::debug_mesh_has);
	ClassDB::bind_method(D_METHOD("debug_mesh_clear"), &TerraChunkDefault2D::debug_mesh_clear);
	ClassDB::bind_method(D_METHOD("debug_mesh_array_clear"), &TerraChunkDefault2D::debug_mesh_array_clear);
	ClassDB::bind_method(D_METHOD("debug_mesh_add_vertices_to", "arr"), &TerraChunkDefault2D::debug_mesh_add_vertices_to);
	ClassDB::bind_method(D_METHOD("debug_mesh_send"), &TerraChunkDefault2D::debug_mesh_send);

	ClassDB::bind_method(D_METHOD("draw_cross_voxels", "max"), &TerraChunkDefault2D::draw_cross_voxels);
	ClassDB::bind_method(D_METHOD("draw_cross_voxels_fill", "max", "fill"), &TerraChunkDefault2D::draw_cross_voxels_fill);
	ClassDB::bind_method(D_METHOD("draw_debug_voxels", "max", "color"), &TerraChunkDefault2D::draw_debug_voxels, DEFVAL(Color(1, 1, 1)));

	ClassDB::bind_method(D_METHOD("draw_debug_voxel_lights"), &TerraChunkDefault2D::draw_debug_voxel_lights);
	ClassDB::bind_method(D_METHOD("draw_debug_mdr_colliders"), &TerraChunkDefault2D::draw_debug_mdr_colliders);

	//Free
	ClassDB::bind_method(D_METHOD("free_chunk"), &TerraChunkDefault2D::free_chunk);

	//etc
	ClassDB::bind_method(D_METHOD("emit_build_finished"), &TerraChunkDefault2D::emit_build_finished);

	//virtuals
	ClassDB::bind_method(D_METHOD("_channel_setup"), &TerraChunkDefault2D::_channel_setup);

	ClassDB::bind_method(D_METHOD("_visibility_changed", "visible"), &TerraChunkDefault2D::_visibility_changed);

	//lights
	ClassDB::bind_method(D_METHOD("_bake_lights"), &TerraChunkDefault2D::_bake_lights);
	ClassDB::bind_method(D_METHOD("_bake_light", "light"), &TerraChunkDefault2D::_bake_light);
	ClassDB::bind_method(D_METHOD("_clear_baked_lights"), &TerraChunkDefault2D::_clear_baked_lights);

	ClassDB::bind_method(D_METHOD("_world_light_added", "light"), &TerraChunkDefault2D::_world_light_added);
	ClassDB::bind_method(D_METHOD("_world_light_removed", "light"), &TerraChunkDefault2D::_world_light_removed);

	ClassDB::bind_method(D_METHOD("_finalize_build"), &TerraChunkDefault2D::_finalize_build);

	BIND_ENUM_CONSTANT(DEFAULT_CHANNEL_TYPE);
	BIND_ENUM_CONSTANT(DEFAULT_CHANNEL_ISOLEVEL);
	BIND_ENUM_CONSTANT(DEFAULT_CHANNEL_ALT_TYPE);
	BIND_ENUM_CONSTANT(DEFAULT_CHANNEL_ALT_ISOLEVEL);
	BIND_ENUM_CONSTANT(DEFAULT_CHANNEL_LIGHT_COLOR_R);
	BIND_ENUM_CONSTANT(DEFAULT_CHANNEL_LIGHT_COLOR_G);
	BIND_ENUM_CONSTANT(DEFAULT_CHANNEL_LIGHT_COLOR_B);
	BIND_ENUM_CONSTANT(DEFAULT_CHANNEL_AO);
	BIND_ENUM_CONSTANT(DEFAULT_CHANNEL_RANDOM_AO);
	BIND_ENUM_CONSTANT(DEFAULT_CHANNEL_LIQUID_FLOW);
	BIND_ENUM_CONSTANT(MAX_DEFAULT_CHANNELS);

	BIND_CONSTANT(MESH_INDEX_TERRARIN);
	BIND_CONSTANT(MESH_INDEX_PROP);
	BIND_CONSTANT(MESH_INDEX_LIQUID);
	BIND_CONSTANT(MESH_INDEX_CLUTTER);

	BIND_CONSTANT(MESH_TYPE_INDEX_MESH);
	BIND_CONSTANT(MESH_TYPE_INDEX_MESH_INSTANCE);
	BIND_CONSTANT(MESH_TYPE_INDEX_SHAPE);
	BIND_CONSTANT(MESH_TYPE_INDEX_BODY);

	BIND_ENUM_CONSTANT(BUILD_FLAG_USE_ISOLEVEL);
	BIND_ENUM_CONSTANT(BUILD_FLAG_USE_LIGHTING);
	BIND_ENUM_CONSTANT(BUILD_FLAG_USE_AO);
	BIND_ENUM_CONSTANT(BUILD_FLAG_USE_RAO);
	BIND_ENUM_CONSTANT(BUILD_FLAG_GENERATE_AO);
	BIND_ENUM_CONSTANT(BUILD_FLAG_AUTO_GENERATE_RAO);
	BIND_ENUM_CONSTANT(BUILD_FLAG_BAKE_LIGHTS);
	BIND_ENUM_CONSTANT(BUILD_FLAG_CREATE_COLLIDER);
	BIND_ENUM_CONSTANT(BUILD_FLAG_CREATE_LODS);
}