Content_mapblock.cpp: Refactor

src/content_mapblock.h

@@ -19,11 +19,129 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #ifndef CONTENT_MAPBLOCK_HEADER
 #define CONTENT_MAPBLOCK_HEADER
+#include "util/numeric.h"
+#include "nodedef.h"
+#include <IMeshManipulator.h>
 
 struct MeshMakeData;
 struct MeshCollector;
-void mapblock_mesh_generate_special(MeshMakeData *data,
-		MeshCollector &collector);
+
+struct LightFrame
+{
+	f32 lightsA[8];
+	f32 lightsB[8];
+};
+
+class MapblockMeshGenerator
+{
+public:
+	MeshMakeData *data;
+	MeshCollector *collector;
+
+	INodeDefManager *nodedef;
+	scene::ISceneManager *smgr;
+	scene::IMeshManipulator *meshmanip;
+
+// options
+	bool enable_mesh_cache;
+
+// current node
+	v3s16 blockpos_nodes;
+	v3s16 p;
+	v3f origin;
+	MapNode n;
+	const ContentFeatures *f;
+	u16 light;
+	LightFrame frame;
+	video::SColor color;
+	TileSpec tile;
+	float scale;
+
+// lighting
+	void getSmoothLightFrame();
+	u16 blendLight(const v3f &vertex_pos);
+	video::SColor blendLight(const v3f &vertex_pos, video::SColor tile_color);
+	video::SColor blendLight(const v3f &vertex_pos, const v3f &vertex_normal, video::SColor tile_color);
+
+	void useTile(int index, bool disable_backface_culling);
+	void useDefaultTile(bool set_color = true);
+	TileSpec getTile(const v3s16 &direction);
+
+// face drawing
+	void drawQuad(v3f *vertices, const v3s16 &normal = v3s16(0, 0, 0));
+
+// cuboid drawing!
+	void drawCuboid(const aabb3f &box, TileSpec *tiles, int tilecount,
+		const u16 *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;
+	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(bool flowing);
+	void getLiquidNeighborhood(bool flowing);
+	void resetCornerLevels();
+	void calculateCornerLevels();
+	f32 getCornerLevel(int i, int k);
+	void drawLiquidSides(bool flowing);
+	void drawLiquidTop(bool flowing);
+
+// 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;
+
+	void drawPlantlikeQuad(float rotation, float quad_offset = 0,
+		bool offset_top_only = false);
+
+// firelike-specific
+	void drawFirelikeQuad(float rotation, float opening_angle,
+		float offset_h, float offset_v = 0.0);
+
+// drawtypes
+	void drawLiquidNode(bool flowing);
+	void drawGlasslikeNode();
+	void drawGlasslikeFramedNode();
+	void drawAllfacesNode();
+	void drawTorchlikeNode();
+	void drawSignlikeNode();
+	void drawPlantlikeNode();
+	void drawFirelikeNode();
+	void drawFencelikeNode();
+	void drawRaillikeNode();
+	void drawNodeboxNode();
+	void drawMeshNode();
+
+// common
+	void errorUnknownDrawtype();
+	void drawNode();
+
+public:
+	MapblockMeshGenerator(MeshMakeData *input, MeshCollector *output);
+	void generate();
+};
 
 #endif
-

src/mapblock_mesh.cpp

@@ -1108,7 +1108,10 @@ MapBlockMesh::MapBlockMesh(MeshMakeData *data, v3s16 camera_offset):
 		- whatever
 	*/
 
-	mapblock_mesh_generate_special(data, collector);
+	{
+		MapblockMeshGenerator generator(data, &collector);
+		generator.generate();
+	}
 
 	/*
 		Convert MeshCollector to SMesh

src/nodedef.h

@@ -166,6 +166,19 @@ enum NodeDrawType
 	NDT_MESH, // Uses static meshes
 };
 
+// Mesh options for NDT_PLANTLIKE with CPT2_MESHOPTIONS
+static const u8 MO_MASK_STYLE          = 0x07;
+static const u8 MO_BIT_RANDOM_OFFSET   = 0x08;
+static const u8 MO_BIT_SCALE_SQRT2     = 0x10;
+static const u8 MO_BIT_RANDOM_OFFSET_Y = 0x20;
+enum PlantlikeStyle {
+	PLANT_STYLE_CROSS,
+	PLANT_STYLE_CROSS2,
+	PLANT_STYLE_STAR,
+	PLANT_STYLE_HASH,
+	PLANT_STYLE_HASH2,
+};
+
 /*
 	Stand-alone definition of a TileSpec (basically a server-side TileSpec)
 */
@@ -364,6 +377,11 @@ struct ContentFeatures
 		return (liquid_alternative_flowing == f.liquid_alternative_flowing);
 	}
 
+	int getGroup(const std::string &group) const
+	{
+		return itemgroup_get(groups, group);
+	}
+
 #ifndef SERVER
 	void fillTileAttribs(ITextureSource *tsrc, TileSpec *tile, TileDef *tiledef,
 		u32 shader_id, bool use_normal_texture, bool backface_culling,

src/util/directiontables.h

@@ -30,5 +30,59 @@ extern const v3s16 g_26dirs[26];
 // 26th is (0,0,0)
 extern const v3s16 g_27dirs[27];
 
-#endif
+/// Direction in the 6D format. g_27dirs contains corresponding vectors.
+/// Here P means Positive, N stands for Negative.
+enum Direction6D {
+// 0
+	D6D_ZP,
+	D6D_YP,
+	D6D_XP,
+	D6D_ZN,
+	D6D_YN,
+	D6D_XN,
+// 6
+	D6D_XN_YP,
+	D6D_XP_YP,
+	D6D_YP_ZP,
+	D6D_YP_ZN,
+	D6D_XN_ZP,
+	D6D_XP_ZP,
+	D6D_XN_ZN,
+	D6D_XP_ZN,
+	D6D_XN_YN,
+	D6D_XP_YN,
+	D6D_YN_ZP,
+	D6D_YN_ZN,
+// 18
+	D6D_XN_YP_ZP,
+	D6D_XP_YP_ZP,
+	D6D_XN_YP_ZN,
+	D6D_XP_YP_ZN,
+	D6D_XN_YN_ZP,
+	D6D_XP_YN_ZP,
+	D6D_XN_YN_ZN,
+	D6D_XP_YN_ZN,
+// 26
+	D6D,
 
+// aliases
+	D6D_BACK   = D6D_ZP,
+	D6D_TOP    = D6D_YP,
+	D6D_RIGHT  = D6D_XP,
+	D6D_FRONT  = D6D_ZN,
+	D6D_BOTTOM = D6D_YN,
+	D6D_LEFT   = D6D_XN,
+};
+
+/// Direction in the wallmounted format.
+/// P is Positive, N is Negative.
+enum DirectionWallmounted {
+	DWM_YP,
+	DWM_YN,
+	DWM_XP,
+	DWM_XN,
+	DWM_ZP,
+	DWM_ZN,
+};
+
+#endif