Voxels are loaded through VoxelProvider

register_types.cpp

@@ -13,6 +13,8 @@ void register_voxel_types() {
 	ObjectTypeDB::register_type<VoxelLibrary>();
 	ObjectTypeDB::register_type<VoxelMap>();
 	ObjectTypeDB::register_type<VoxelTerrain>();
+	ObjectTypeDB::register_type<VoxelProvider>();
+	ObjectTypeDB::register_type<VoxelProviderTest>();
 
 }
 

voxel_provider.cpp

@@ -0,0 +1,54 @@
+#include "voxel_provider.h"
+#include "voxel_map.h"
+
+
+void VoxelProvider::emerge_block(Ref<VoxelBuffer> out_buffer, Vector3i block_pos) {
+	ERR_FAIL_COND(out_buffer.is_null());
+	ScriptInstance * script = get_script_instance();
+	if(script) {
+		// Call script to generate buffer
+		Variant arg1 = out_buffer;
+		Variant arg2 = block_pos.to_vec3();
+		const Variant * args[2] = { &arg1, &arg2 };
+		//Variant::CallError err; // wut
+		script->call_multilevel("emerge_block", args, 2);
+	}
+}
+
+void VoxelProvider::immerge_block(Ref<VoxelBuffer> buffer, Vector3i block_pos) {
+	ERR_FAIL_COND(buffer.is_null());
+	ScriptInstance * script = get_script_instance();
+	if(script) {
+		// Call script to save buffer
+		Variant arg1 = buffer;
+		Variant arg2 = block_pos.to_vec3();
+		const Variant * args[2] = { &arg1, &arg2 };
+		//Variant::CallError err; // wut
+		script->call_multilevel("immerge_block", args, 2);
+	}
+}
+
+void VoxelProvider::_emerge_block(Ref<VoxelBuffer> out_buffer, Vector3 block_pos) {
+	emerge_block(out_buffer, Vector3i(block_pos));
+}
+
+void VoxelProvider::_immerge_block(Ref<VoxelBuffer> buffer, Vector3 block_pos) {
+	immerge_block(buffer, Vector3i(block_pos));
+}
+
+void VoxelProvider::_bind_methods() {
+
+	ObjectTypeDB::bind_method(_MD("emerge_block", "out_buffer:VoxelBuffer", "block_pos:Vector3"), &VoxelProvider::_emerge_block);
+	ObjectTypeDB::bind_method(_MD("immerge_block", "buffer:VoxelBuffer", "block_pos:Vector3"), &VoxelProvider::_immerge_block);
+
+}
+
+
+void VoxelProviderTest::load_block(Ref<VoxelBuffer> out_buffer, Vector3i block_pos) {
+	ERR_FAIL_COND(out_buffer.is_null());
+	//Vector3i voxel_pos = VoxelMap::block_to_voxel(block_pos);
+	if(block_pos.y < 0) {
+		out_buffer->fill(1);
+	}
+}
+

voxel_provider.h

@@ -0,0 +1,29 @@
+#ifndef VOXEL_PROVIDER_H
+#define VOXEL_PROVIDER_H
+
+#include "reference.h"
+#include "voxel_buffer.h"
+
+
+class VoxelProvider : public Reference {
+	OBJ_TYPE(VoxelProvider, Reference)
+public:
+	virtual void emerge_block(Ref<VoxelBuffer> out_buffer, Vector3i block_pos);
+	virtual void immerge_block(Ref<VoxelBuffer> buffer, Vector3i block_pos);
+
+protected:
+	static void _bind_methods();
+
+	void _emerge_block(Ref<VoxelBuffer> out_buffer, Vector3 block_pos);
+	void _immerge_block(Ref<VoxelBuffer> buffer, Vector3 block_pos);
+};
+
+
+class VoxelProviderTest : public VoxelProvider {
+	OBJ_TYPE(VoxelProviderTest, VoxelProvider)
+public:
+	virtual void load_block(Ref<VoxelBuffer> out_buffer, Vector3i block_pos);
+};
+
+
+#endif // VOXEL_PROVIDER_H

voxel_terrain.cpp

@@ -8,12 +8,22 @@ VoxelTerrain::VoxelTerrain(): Node(), _min_y(-4), _max_y(4) {
 	_mesher = Ref<VoxelMesher>(memnew(VoxelMesher));
 }
 
+// Sorts distance to world origin
+// TODO Use distance to camera
 struct BlockUpdateComparator0 {
 	inline bool operator()(const Vector3i & a, const Vector3i & b) const {
 		return a.length_sq() > b.length_sq();
 	}
 };
 
+void VoxelTerrain::set_provider(Ref<VoxelProvider> provider) {
+	_provider = provider;
+}
+
+Ref<VoxelProvider> VoxelTerrain::get_provider() {
+	return _provider;
+}
+
 void VoxelTerrain::force_load_blocks(Vector3i center, Vector3i extents) {
 	//Vector3i min = center - extents;
 	//Vector3i max = center + extents + Vector3i(1,1,1);
@@ -88,14 +98,12 @@ void VoxelTerrain::update_blocks() {
 			// Create buffer
 			Ref<VoxelBuffer> buffer_ref = Ref<VoxelBuffer>(memnew(VoxelBuffer));
 			const Vector3i block_size(VoxelBlock::SIZE, VoxelBlock::SIZE, VoxelBlock::SIZE);
-			buffer_ref->create(block_size.x, block_size.y, block_size.y);
+			buffer_ref->create(block_size.x, block_size.y, block_size.z);
 
-			// Call script to generate buffer
-			Variant arg1 = buffer_ref;
-			Variant arg2 = block_pos.to_vec3();
-			const Variant * args[2] = { &arg1, &arg2 };
-			Variant::CallError err; // wut
-			script->call_multilevel("_generate_block", args, 2);
+			// Query voxel provider
+			if(!_provider.is_null()) {
+				_provider->emerge_block(buffer_ref, block_pos);
+			}
 
 			// Check script return
 			ERR_FAIL_COND(buffer_ref->get_size() != block_size);
@@ -116,7 +124,6 @@ void VoxelTerrain::update_blocks() {
 				}
 			}
 			//update_block_mesh(block_pos);
-
 		}
 
 		// Pop request
@@ -184,6 +191,9 @@ void VoxelTerrain::update_block_mesh(Vector3i block_pos) {
 
 void VoxelTerrain::_bind_methods() {
 
+	ObjectTypeDB::bind_method(_MD("set_provider", "provider:VoxelProvider"), &VoxelTerrain::set_provider);
+	ObjectTypeDB::bind_method(_MD("get_provider:VoxelProvider"), &VoxelTerrain::get_provider);
+
 	ObjectTypeDB::bind_method(_MD("get_block_update_count"), &VoxelTerrain::get_block_update_count);
 	ObjectTypeDB::bind_method(_MD("get_mesher:VoxelMesher"), &VoxelTerrain::get_mesher);
 

voxel_terrain.h

@@ -4,6 +4,7 @@
 #include <scene/main/node.h>
 #include "voxel_map.h"
 #include "voxel_mesher.h"
+#include "voxel_provider.h"
 
 // Infinite static terrain made of voxels.
 // It is loaded around VoxelTerrainStreamers.
@@ -19,12 +20,15 @@ class VoxelTerrain : public Node /*, public IVoxelMapObserver*/ {
 
 	Vector<Vector3i> _block_update_queue;
 	Ref<VoxelMesher> _mesher;
+	Ref<VoxelProvider> _provider;
 
 public:
 	VoxelTerrain();
 
-	void force_load_blocks(Vector3i center, Vector3i extents);
+	void set_provider(Ref<VoxelProvider> provider);
+	Ref<VoxelProvider> get_provider();
 
+	void force_load_blocks(Vector3i center, Vector3i extents);
 	int get_block_update_count();
 
 	Ref<VoxelMesher> get_mesher() { return _mesher; }