Now PropData can add lights into chunks.

props/prop_data.cpp

@@ -1,6 +1,7 @@
 #include "prop_data.h"
 
 #include "prop_data_prop.h"
+#include "../world/voxel_chunk.h"
 
 bool PropData::get_snap_to_mesh() {
 	return _snap_to_mesh;
@@ -75,6 +76,86 @@ void PropData::add_textures_into(Ref<TexturePacker> texture_packer) {
 	}
 }
 
+void PropData::add_prop_lights_into(VoxelChunk *chunk, Transform parent_transform, bool allow_snap) {
+	ERR_FAIL_COND(!ObjectDB::instance_validate(chunk));
+
+	for (int i = 0; i < _props.size(); ++i) {
+		Ref<PropDataEntry> entry = _props.get(i);
+
+		Ref<PropDataLight> pl = entry;
+
+		if (pl.is_valid()) {
+			Transform t = parent_transform * pl->get_transform();
+
+			Vector3 px = t.origin / chunk->get_voxel_scale();
+
+			Vector3i cp = chunk->get_chunk_position();
+			Vector3i cs = chunk->get_chunk_size();
+
+			Ref<VoxelLight> vl;
+			vl.instance();
+			vl->set_world_position(px.x + cp.x * cs.x, px.y + cp.y * cs.y, px.z + cp.z * cs.z);
+			vl->set_color(pl->get_light_color());
+			vl->set_size(pl->get_light_size());
+
+			chunk->add_prop_light(vl);
+		}
+
+		Ref<PropDataProp> pdataprop = entry;
+
+		if (pdataprop.is_valid() && pdataprop->get_prop().is_valid()) {
+			Ref<PropData> pd = pdataprop->get_prop();
+
+			if (allow_snap) {
+				if (pd->get_snap_to_mesh())
+					print_error(pd->get_name());
+
+				pd->add_prop_lights_into(chunk, get_next_snapped_prop_transform(chunk, parent_transform * pdataprop->get_transform(), pd->get_snap_to_mesh(), pd->get_snap_axis()), allow_snap);
+			} else {
+				pd->add_prop_lights_into(chunk, parent_transform * pdataprop->get_transform(), allow_snap);
+			}
+
+
+		}
+	}
+}
+void PropData::add_prop_lights_into_bind(Node *chunk, Transform parent_transform, bool allow_snap) {
+	VoxelChunk *c = Object::cast_to<VoxelChunk>(chunk);
+
+	ERR_FAIL_COND(!ObjectDB::instance_validate(c));
+
+	add_prop_lights_into(c, parent_transform, allow_snap);
+}
+
+
+Transform PropData::get_next_snapped_prop_transform(Spatial *s, Transform parent_transform, bool snap_to_mesh, Vector3 snap_axis) {
+	if (snap_to_mesh) {
+		Vector3 pos = s->to_global(parent_transform.origin);
+		Vector3 world_snap_axis = s->to_global(parent_transform.xform(snap_axis));
+		Vector3 world_snap_dir = world_snap_axis - pos;
+		world_snap_dir *= 100;
+
+		PhysicsDirectSpaceState *space_state = s->get_world()->get_direct_space_state();
+
+		ERR_FAIL_COND_V(space_state == NULL, parent_transform);
+
+		PhysicsDirectSpaceState::RayResult res;
+
+		if (space_state->intersect_ray(pos - world_snap_dir, pos + world_snap_dir, res, Set<RID>(), 1)) {
+			parent_transform.origin = s->to_local(res.position);
+		}
+	}
+
+	return parent_transform;
+}
+Transform PropData::get_next_snapped_prop_transform_bind(Node *spatial, Transform parent_transform, bool snap_to_mesh, Vector3 snap_axis) {
+	Spatial *s = Object::cast_to<VoxelChunk>(spatial);
+
+	ERR_FAIL_COND_V(!ObjectDB::instance_validate(s), parent_transform);
+
+	return get_next_snapped_prop_transform(s, parent_transform, snap_to_mesh, snap_axis);
+}
+
 PropData::PropData() {
 	_snap_to_mesh = false;
 	_snap_axis = Vector3(0, -1, 0);
@@ -104,4 +185,7 @@ void PropData::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "props", PROPERTY_HINT_NONE, "17/17:PropDataEntry", PROPERTY_USAGE_DEFAULT, "PropDataEntry"), "set_props", "get_props");
 
 	ClassDB::bind_method(D_METHOD("add_textures_into", "texture_packer"), &PropData::add_textures_into);
+	ClassDB::bind_method(D_METHOD("add_prop_lights_into", "chunk", "parent_transform", "allow_snap"), &PropData::add_prop_lights_into_bind);
+
+	ClassDB::bind_method(D_METHOD("get_next_snapped_prop_transform", "spatial", "parent_transform", "snap_to_mesh", "snap_axis"), &PropData::get_next_snapped_prop_transform_bind);
 }

props/prop_data.h

@@ -3,12 +3,18 @@
 
 #include "core/reference.h"
 #include "core/vector.h"
+#include "core/math/transform.h"
+
+#include "servers/physics_server.h"
 
 #include "prop_data_entry.h"
 #include "prop_data_mesh.h"
 
 #include "../../texture_packer/texture_packer.h"
 
+class Spatial;
+class VoxelChunk;
+
 class PropData : public Resource {
 	GDCLASS(PropData, Resource);
 
@@ -30,6 +36,11 @@ public:
 	void set_props(const Vector<Variant> &props);
     
     void add_textures_into(Ref<TexturePacker> texture_packer);
+	void add_prop_lights_into(VoxelChunk *chunk, Transform parent_transform, bool allow_snap);
+	void add_prop_lights_into_bind(Node *chunk, Transform parent_transform, bool allow_snap);
+
+	Transform get_next_snapped_prop_transform(Spatial *s, Transform parent_transform, bool snap_to_mesh, Vector3 snap_axis);
+	Transform get_next_snapped_prop_transform_bind(Node *spatial, Transform parent_transform, bool snap_to_mesh, Vector3 snap_axis);
 
 	PropData();
 	~PropData();

world/voxel_chunk.cpp

@@ -434,6 +434,10 @@ void VoxelChunk::clear_baked_lights() {
 	_buffer->clear_lights();
 }
 
+void VoxelChunk::add_prop_light(Ref<VoxelLight> light) {
+    bake_light(light);
+}
+
 void VoxelChunk::add_prop(Ref<VoxelChunkPropData> prop) {
 	_props.push_back(prop);
 
@@ -854,6 +858,8 @@ void VoxelChunk::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("bake_light", "light"), &VoxelChunk::bake_light);
 	ClassDB::bind_method(D_METHOD("clear_baked_lights"), &VoxelChunk::clear_baked_lights);
     
+	ClassDB::bind_method(D_METHOD("add_prop_light", "light"), &VoxelChunk::add_prop_light);
+
 	ClassDB::bind_method(D_METHOD("add_prop", "prop"), &VoxelChunk::add_prop);
 	ClassDB::bind_method(D_METHOD("get_prop", "index"), &VoxelChunk::get_prop);
 	ClassDB::bind_method(D_METHOD("get_prop_count"), &VoxelChunk::get_prop_count);

world/voxel_chunk.h

@@ -130,6 +130,8 @@ public:
 	void bake_light(Ref<VoxelLight> light);
 	void clear_baked_lights();
     
+    void add_prop_light(Ref<VoxelLight> light);
+
 	//props
 	void add_prop(Ref<VoxelChunkPropData> prop);
 	Ref<VoxelChunkPropData> get_prop(int index);