Fix node-nodebox lighting difference in direct sunlight (#7061)

[minetest.git] / src / content_mapblock.h

diff --git a/src/content_mapblock.h b/src/content_mapblock.h
index 7e87835f720893cded5240511970e750ced427fa..97947cdbe093bea1b9d1ea739fee0943719aaf8b 100644 (file)
--- a/src/content_mapblock.h
+++ b/src/content_mapblock.h
@@ -1,6 +1,6 @@
 /*
 Minetest
-Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
@@ -17,13 +17,162 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
-#ifndef CONTENT_MAPBLOCK_HEADER
-#define CONTENT_MAPBLOCK_HEADER
+#pragma once
+
+#include "nodedef.h"
+#include <IMeshManipulator.h>
 
 struct MeshMakeData;
 struct MeshCollector;
-void mapblock_mesh_generate_special(MeshMakeData *data,
-               MeshCollector &collector);
 
-#endif
+struct LightPair {
+       u8 lightDay;
+       u8 lightNight;
+
+       LightPair() = default;
+       explicit LightPair(u16 value) : lightDay(value & 0xff), lightNight(value >> 8) {}
+       LightPair(u8 valueA, u8 valueB) : lightDay(valueA), lightNight(valueB) {}
+       LightPair(float valueA, float valueB) :
+               lightDay(core::clamp(core::round32(valueA), 0, 255)),
+               lightNight(core::clamp(core::round32(valueB), 0, 255)) {}
+       operator u16() const { return lightDay | lightNight << 8; }
+};
+
+struct LightInfo {
+       float light_day;
+       float light_night;
+       float light_boosted;
+
+       LightPair getPair(float sunlight_boost = 0.0) const
+       {
+               return LightPair(
+                       (1 - sunlight_boost) * light_day
+                       + sunlight_boost * light_boosted,
+                       light_night);
+       }
+};
+
+struct LightFrame {
+       f32 lightsDay[8];
+       f32 lightsNight[8];
+       bool sunlight[8];
+};
+
+class MapblockMeshGenerator
+{
+public:
+       MeshMakeData *data;
+       MeshCollector *collector;
+
+       const NodeDefManager *nodedef;
+       scene::IMeshManipulator *meshmanip;
+
+// options
+       bool enable_mesh_cache;
+
+// current node
+       v3s16 blockpos_nodes;
+       v3s16 p;
+       v3f origin;
+       MapNode n;
+       const ContentFeatures *f;
+       LightPair light;
+       LightFrame frame;
+       video::SColor color;
+       TileSpec tile;
+       float scale;
+
+// lighting
+       void getSmoothLightFrame();
+       LightInfo blendLight(const v3f &vertex_pos);
+       video::SColor blendLightColor(const v3f &vertex_pos);
+       video::SColor blendLightColor(const v3f &vertex_pos, const v3f &vertex_normal);
+
+       void useTile(int index = 0, u8 set_flags = MATERIAL_FLAG_CRACK_OVERLAY,
+               u8 reset_flags = 0, bool special = false);
+       void getTile(int index, TileSpec *tile);
+       void getTile(v3s16 direction, TileSpec *tile);
+       void getSpecialTile(int index, TileSpec *tile, bool apply_crack = false);
+
+// face drawing
+       void drawQuad(v3f *vertices, const v3s16 &normal = v3s16(0, 0, 0),
+               float vertical_tiling = 1.0);
+
+// cuboid drawing!
+       void drawCuboid(const aabb3f &box, TileSpec *tiles, int tilecount,
+               const LightInfo *lights , const f32 *txc);
+       void generateCuboidTextureCoords(aabb3f const &box, f32 *coords);
+       void drawAutoLightedCuboid(aabb3f box, const f32 *txc = NULL,
+               TileSpec *tiles = NULL, int tile_count = 0);
+
+// liquid-specific
+       bool top_is_same_liquid;
+       bool draw_liquid_bottom;
+       TileSpec tile_liquid;
+       TileSpec tile_liquid_top;
+       content_t c_flowing;
+       content_t c_source;
+       video::SColor color_liquid_top;
+       struct NeighborData {
+               f32 level;
+               content_t content;
+               bool is_same_liquid;
+               bool top_is_same_liquid;
+       };
+       NeighborData liquid_neighbors[3][3];
+       f32 corner_levels[2][2];
+
+       void prepareLiquidNodeDrawing();
+       void getLiquidNeighborhood();
+       void calculateCornerLevels();
+       f32 getCornerLevel(int i, int k);
+       void drawLiquidSides();
+       void drawLiquidTop();
+       void drawLiquidBottom();
+
+// raillike-specific
+       // name of the group that enables connecting to raillike nodes of different kind
+       static const std::string raillike_groupname;
+       int raillike_group;
+       bool isSameRail(v3s16 dir);
+
+// plantlike-specific
+       PlantlikeStyle draw_style;
+       v3f offset;
+       int rotate_degree;
+       bool random_offset_Y;
+       int face_num;
+       float plant_height;
+
+       void drawPlantlikeQuad(float rotation, float quad_offset = 0,
+               bool offset_top_only = false);
+       void drawPlantlike();
+
+// firelike-specific
+       void drawFirelikeQuad(float rotation, float opening_angle,
+               float offset_h, float offset_v = 0.0);
+
+// drawtypes
+       void drawLiquidNode();
+       void drawGlasslikeNode();
+       void drawGlasslikeFramedNode();
+       void drawAllfacesNode();
+       void drawTorchlikeNode();
+       void drawSignlikeNode();
+       void drawPlantlikeNode();
+       void drawPlantlikeRootedNode();
+       void drawFirelikeNode();
+       void drawFencelikeNode();
+       void drawRaillikeNode();
+       void drawNodeboxNode();
+       void drawMeshNode();
+
+// common
+       void errorUnknownDrawtype();
+       void drawNode();
 
+public:
+       MapblockMeshGenerator(MeshMakeData *input, MeshCollector *output);
+       void generate();
+       void renderSingle(content_t node);
+};