refacto: hide mesh_cache inside the rendering engine

[dragonfireclient.git] / src / voxelalgorithms.h

diff --git a/src/voxelalgorithms.h b/src/voxelalgorithms.h
index 5eff8f7ac86329f3376704f38fd1c11067871afe..bcbd3b586bc41beeb52aaca077d3290e52c2159c 100644 (file)
--- a/src/voxelalgorithms.h
+++ b/src/voxelalgorithms.h
@@ -17,44 +17,20 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
-#ifndef VOXELALGORITHMS_HEADER
-#define VOXELALGORITHMS_HEADER
+#pragma once
 
 #include "voxel.h"
 #include "mapnode.h"
-#include <set>
-#include <map>
+#include "util/container.h"
 
 class Map;
+class ServerMap;
 class MapBlock;
+class MMVManip;
 
 namespace voxalgo
 {
 
-// TODO: Move unspreadLight and spreadLight from VoxelManipulator to here
-
-void setLight(VoxelManipulator &v, VoxelArea a, u8 light,
-               INodeDefManager *ndef);
-
-void clearLightAndCollectSources(VoxelManipulator &v, VoxelArea a,
-               enum LightBank bank, INodeDefManager *ndef,
-               std::set<v3s16> & light_sources,
-               std::map<v3s16, u8> & unlight_from);
-
-struct SunlightPropagateResult
-{
-       bool bottom_sunlight_valid;
-
-       SunlightPropagateResult(bool bottom_sunlight_valid_):
-               bottom_sunlight_valid(bottom_sunlight_valid_)
-       {}
-};
-
-SunlightPropagateResult propagateSunlight(VoxelManipulator &v, VoxelArea a,
-               bool inexistent_top_provides_sunlight,
-               std::set<v3s16> & light_sources,
-               INodeDefManager *ndef);
-
 /*!
  * Updates the lighting on the map.
  * The result will be correct only if
@@ -69,10 +45,41 @@ SunlightPropagateResult propagateSunlight(VoxelManipulator &v, VoxelArea a,
  */
 void update_lighting_nodes(
        Map *map,
-       INodeDefManager *ndef,
-       std::vector<std::pair<v3s16, MapNode> > &oldnodes,
+       const std::vector<std::pair<v3s16, MapNode>> &oldnodes,
        std::map<v3s16, MapBlock*> &modified_blocks);
 
+/*!
+ * Updates borders of the given mapblock.
+ * Only updates if the block was marked with incomplete
+ * lighting and the neighbor is also loaded.
+ *
+ * \param block the block to update
+ * \param modified_blocks output, contains all map blocks that
+ * the function modified
+ */
+void update_block_border_lighting(Map *map, MapBlock *block,
+       std::map<v3s16, MapBlock*> &modified_blocks);
+
+/*!
+ * Copies back nodes from a voxel manipulator
+ * to the map and updates lighting.
+ * For server use only.
+ *
+ * \param modified_blocks output, contains all map blocks that
+ * the function modified
+ */
+void blit_back_with_light(ServerMap *map, MMVManip *vm,
+       std::map<v3s16, MapBlock*> *modified_blocks);
+
+/*!
+ * Corrects the light in a map block.
+ * For server use only.
+ *
+ * \param block the block to update
+ */
+void repair_block_light(ServerMap *map, MapBlock *block,
+       std::map<v3s16, MapBlock*> *modified_blocks);
+
 /*!
  * This class iterates trough voxels that intersect with
  * a line. The collision detection does not see nodeboxes,
@@ -91,21 +98,25 @@ struct VoxelLineIterator
         * which multiplying the line's vector gives a vector that ends
         * on the intersection of two nodes.
         */
-       v3f m_next_intersection_multi;
+       v3f m_next_intersection_multi { 10000.0f, 10000.0f, 10000.0f };
        /*!
         * Each component stores the smallest positive number, by which
         * m_next_intersection_multi's components can be increased.
         */
-       v3f m_intersection_multi_inc;
+       v3f m_intersection_multi_inc { 10000.0f, 10000.0f, 10000.0f };
        /*!
         * Direction of the line. Each component can be -1 or 1 (if a
         * component of the line's vector is 0, then there will be 1).
         */
-       v3s16 m_step_directions;
+       v3s16 m_step_directions { 1, 1, 1 };
        //! Position of the current node.
        v3s16 m_current_node_pos;
-       //! If true, the next node will intersect the line, too.
-       bool m_has_next;
+       //! Index of the current node
+       s16 m_current_index = 0;
+       //! Position of the start node.
+       v3s16 m_start_node_pos;
+       //! Index of the last node
+       s16 m_last_index;
 
        /*!
         * Creates a voxel line iterator with the given line.
@@ -129,12 +140,18 @@ struct VoxelLineIterator
        /*!
         * Returns true if the next voxel intersects the given line.
         */
-       inline bool hasNext() const { return m_has_next; }
+       inline bool hasNext() const
+       {
+               return m_current_index < m_last_index;
+       }
+
+       /*!
+        * Returns how many times next() must be called until
+        * voxel==m_current_node_pos.
+        * If voxel does not intersect with the line,
+        * the result is undefined.
+        */
+       s16 getIndex(v3s16 voxel);
 };
 
 } // namespace voxalgo
-
-
-
-#endif
-