Make Connection::Send cancel silently if peer doesn't exist.
[oweals/minetest.git] / src / mapnode.cpp
index 973b89ddd6cbec79ae17218f50124fa001c7db2d..956abe5c714b86d36f828f31beb20ae030f42c7e 100644 (file)
@@ -17,43 +17,385 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
+#include "common_irrlicht.h"
 #include "mapnode.h"
 #include "tile.h"
+#include "porting.h"
+#include <string>
+#include "mineral.h"
+// For g_settings
+#include "main.h"
+#include "content_mapnode.h"
+#include "nodemetadata.h"
+
+ContentFeatures::~ContentFeatures()
+{
+       delete initial_metadata;
+       delete special_material;
+       delete special_atlas;
+}
+
+void ContentFeatures::setTexture(u16 i, std::string name, u8 alpha)
+{
+       if(g_texturesource)
+       {
+               tiles[i].texture = g_texturesource->getTexture(name);
+       }
+       
+       if(alpha != 255)
+       {
+               tiles[i].alpha = alpha;
+               tiles[i].material_type = MATERIAL_ALPHA_VERTEX;
+       }
+
+       if(inventory_texture == NULL)
+               setInventoryTexture(name);
+}
+
+void ContentFeatures::setInventoryTexture(std::string imgname)
+{
+       if(g_texturesource == NULL)
+               return;
+       
+       imgname += "^[forcesingle";
+       
+       inventory_texture = g_texturesource->getTextureRaw(imgname);
+}
+
+void ContentFeatures::setInventoryTextureCube(std::string top,
+               std::string left, std::string right)
+{
+       if(g_texturesource == NULL)
+               return;
+       
+       str_replace_char(top, '^', '&');
+       str_replace_char(left, '^', '&');
+       str_replace_char(right, '^', '&');
+
+       std::string imgname_full;
+       imgname_full += "[inventorycube{";
+       imgname_full += top;
+       imgname_full += "{";
+       imgname_full += left;
+       imgname_full += "{";
+       imgname_full += right;
+       inventory_texture = g_texturesource->getTextureRaw(imgname_full);
+}
+
+struct ContentFeatures g_content_features[MAX_CONTENT+1];
+
+ContentFeatures & content_features(content_t i)
+{
+       return g_content_features[i];
+}
+ContentFeatures & content_features(MapNode &n)
+{
+       return content_features(n.getContent());
+}
 
 /*
-       Face directions:
-               0: up
-               1: down
-               2: right
-               3: left
-               4: back
-               5: front
+       See mapnode.h for description.
 */
-u16 g_content_tiles[USEFUL_CONTENT_COUNT][6] =
-{
-       {TILE_STONE,TILE_STONE,TILE_STONE,TILE_STONE,TILE_STONE,TILE_STONE},
-       {TILE_GRASS,TILE_MUD,TILE_MUD_WITH_GRASS,TILE_MUD_WITH_GRASS,TILE_MUD_WITH_GRASS,TILE_MUD_WITH_GRASS},
-       {TILE_WATER,TILE_WATER,TILE_WATER,TILE_WATER,TILE_WATER,TILE_WATER},
-       {TILE_NONE,TILE_NONE,TILE_NONE,TILE_NONE,TILE_NONE,TILE_NONE},
-       {TILE_TREE_TOP,TILE_TREE_TOP,TILE_TREE,TILE_TREE,TILE_TREE,TILE_TREE},
-       {TILE_LEAVES,TILE_LEAVES,TILE_LEAVES,TILE_LEAVES,TILE_LEAVES,TILE_LEAVES},
-       {TILE_GRASS_FOOTSTEPS,TILE_MUD,TILE_MUD_WITH_GRASS,TILE_MUD_WITH_GRASS,TILE_MUD_WITH_GRASS,TILE_MUD_WITH_GRASS},
-       {TILE_MESE,TILE_MESE,TILE_MESE,TILE_MESE,TILE_MESE,TILE_MESE},
-       {TILE_MUD,TILE_MUD,TILE_MUD,TILE_MUD,TILE_MUD,TILE_MUD},
-       {TILE_WATER,TILE_WATER,TILE_WATER,TILE_WATER,TILE_WATER,TILE_WATER},
-};
-
-const char * g_content_inventory_textures[USEFUL_CONTENT_COUNT] =
-{
-       "stone",
-       "grass",
-       "water",
-       "torch_on_floor",
-       "tree_top",
-       "leaves",
-       "grass_footsteps",
-       "mese",
-       "mud",
-       "water",
-};
+void init_mapnode()
+{
+       if(g_texturesource == NULL)
+       {
+               dstream<<"INFO: Initial run of init_mapnode with "
+                               "g_texturesource=NULL. If this segfaults, "
+                               "there is a bug with something not checking for "
+                               "the NULL value."<<std::endl;
+       }
+       else
+       {
+               dstream<<"INFO: Full run of init_mapnode with "
+                               "g_texturesource!=NULL"<<std::endl;
+       }
+
+       /*// Read some settings
+       bool new_style_water = g_settings.getBool("new_style_water");
+       bool new_style_leaves = g_settings.getBool("new_style_leaves");*/
+
+       /*
+               Initialize content feature table
+       */
+       
+       /*
+               Set initial material type to same in all tiles, so that the
+               same material can be used in more stuff.
+               This is set according to the leaves because they are the only
+               differing material to which all materials can be changed to
+               get this optimization.
+       */
+       u8 initial_material_type = MATERIAL_ALPHA_SIMPLE;
+       /*if(new_style_leaves)
+               initial_material_type = MATERIAL_ALPHA_SIMPLE;
+       else
+               initial_material_type = MATERIAL_ALPHA_NONE;*/
+       for(u16 i=0; i<MAX_CONTENT+1; i++)
+       {
+               ContentFeatures *f = &g_content_features[i];
+               // Re-initialize
+               f->reset();
+
+               for(u16 j=0; j<6; j++)
+                       f->tiles[j].material_type = initial_material_type;
+       }
+
+       /*
+               Initially set every block to be shown as an unknown block.
+               Don't touch CONTENT_IGNORE or CONTENT_AIR.
+       */
+       for(u16 i=0; i<MAX_CONTENT+1; i++)
+       {
+               if(i == CONTENT_IGNORE || i == CONTENT_AIR)
+                       continue;
+               ContentFeatures *f = &g_content_features[i];
+               f->setAllTextures("unknown_block.png");
+               f->dug_item = std::string("MaterialItem2 ")+itos(i)+" 1";
+       }
+
+       /*
+               Initialize mapnode content
+       */
+       content_mapnode_init();
+       
+}
+
+v3s16 facedir_rotate(u8 facedir, v3s16 dir)
+{
+       /*
+               Face 2 (normally Z-) direction:
+               facedir=0: Z-
+               facedir=1: X-
+               facedir=2: Z+
+               facedir=3: X+
+       */
+       v3s16 newdir;
+       if(facedir==0) // Same
+               newdir = v3s16(dir.X, dir.Y, dir.Z);
+       else if(facedir == 1) // Face is taken from rotXZccv(-90)
+               newdir = v3s16(-dir.Z, dir.Y, dir.X);
+       else if(facedir == 2) // Face is taken from rotXZccv(180)
+               newdir = v3s16(-dir.X, dir.Y, -dir.Z);
+       else if(facedir == 3) // Face is taken from rotXZccv(90)
+               newdir = v3s16(dir.Z, dir.Y, -dir.X);
+       else
+               newdir = dir;
+       return newdir;
+}
+
+TileSpec MapNode::getTile(v3s16 dir)
+{
+       if(content_features(*this).param_type == CPT_FACEDIR_SIMPLE)
+               dir = facedir_rotate(param1, dir);
+       
+       TileSpec spec;
+       
+       s32 dir_i = -1;
+       
+       if(dir == v3s16(0,0,0))
+               dir_i = -1;
+       else if(dir == v3s16(0,1,0))
+               dir_i = 0;
+       else if(dir == v3s16(0,-1,0))
+               dir_i = 1;
+       else if(dir == v3s16(1,0,0))
+               dir_i = 2;
+       else if(dir == v3s16(-1,0,0))
+               dir_i = 3;
+       else if(dir == v3s16(0,0,1))
+               dir_i = 4;
+       else if(dir == v3s16(0,0,-1))
+               dir_i = 5;
+       
+       if(dir_i == -1)
+               // Non-directional
+               spec = content_features(*this).tiles[0];
+       else 
+               spec = content_features(*this).tiles[dir_i];
+       
+       /*
+               If it contains some mineral, change texture id
+       */
+       if(content_features(*this).param_type == CPT_MINERAL && g_texturesource)
+       {
+               u8 mineral = getMineral();
+               std::string mineral_texture_name = mineral_block_texture(mineral);
+               if(mineral_texture_name != "")
+               {
+                       u32 orig_id = spec.texture.id;
+                       std::string texture_name = g_texturesource->getTextureName(orig_id);
+                       //texture_name += "^blit:";
+                       texture_name += "^";
+                       texture_name += mineral_texture_name;
+                       u32 new_id = g_texturesource->getTextureId(texture_name);
+                       spec.texture = g_texturesource->getTexture(new_id);
+               }
+       }
+
+       return spec;
+}
+
+u8 MapNode::getMineral()
+{
+       if(content_features(*this).param_type == CPT_MINERAL)
+       {
+               return param1 & 0x0f;
+       }
+
+       return MINERAL_NONE;
+}
+
+u32 MapNode::serializedLength(u8 version)
+{
+       if(!ser_ver_supported(version))
+               throw VersionMismatchException("ERROR: MapNode format not supported");
+               
+       if(version == 0)
+               return 1;
+       else if(version <= 9)
+               return 2;
+       else
+               return 3;
+}
+void MapNode::serialize(u8 *dest, u8 version)
+{
+       if(!ser_ver_supported(version))
+               throw VersionMismatchException("ERROR: MapNode format not supported");
+               
+       // Translate to wanted version
+       MapNode n_foreign = mapnode_translate_from_internal(*this, version);
+
+       u8 actual_param0 = n_foreign.param0;
+
+       // Convert special values from new version to old
+       if(version <= 18)
+       {
+               // In these versions, CONTENT_IGNORE and CONTENT_AIR
+               // are 255 and 254
+               if(actual_param0 == CONTENT_IGNORE)
+                       actual_param0 = 255;
+               else if(actual_param0 == CONTENT_AIR)
+                       actual_param0 = 254;
+       }
+
+       if(version == 0)
+       {
+               dest[0] = actual_param0;
+       }
+       else if(version <= 9)
+       {
+               dest[0] = actual_param0;
+               dest[1] = n_foreign.param1;
+       }
+       else
+       {
+               dest[0] = actual_param0;
+               dest[1] = n_foreign.param1;
+               dest[2] = n_foreign.param2;
+       }
+}
+void MapNode::deSerialize(u8 *source, u8 version)
+{
+       if(!ser_ver_supported(version))
+               throw VersionMismatchException("ERROR: MapNode format not supported");
+               
+       if(version == 0)
+       {
+               param0 = source[0];
+       }
+       else if(version == 1)
+       {
+               param0 = source[0];
+               // This version doesn't support saved lighting
+               if(light_propagates() || light_source() > 0)
+                       param1 = 0;
+               else
+                       param1 = source[1];
+       }
+       else if(version <= 9)
+       {
+               param0 = source[0];
+               param1 = source[1];
+       }
+       else
+       {
+               param0 = source[0];
+               param1 = source[1];
+               param2 = source[2];
+       }
+       
+       // Convert special values from old version to new
+       if(version <= 18)
+       {
+               // In these versions, CONTENT_IGNORE and CONTENT_AIR
+               // are 255 and 254
+               if(param0 == 255)
+                       param0 = CONTENT_IGNORE;
+               else if(param0 == 254)
+                       param0 = CONTENT_AIR;
+       }
+       // version 19 is fucked up with sometimes the old values and sometimes not
+       if(version == 19)
+       {
+               if(param0 == 255)
+                       param0 = CONTENT_IGNORE;
+               else if(param0 == 254)
+                       param0 = CONTENT_AIR;
+       }
+
+       // Translate to our known version
+       *this = mapnode_translate_to_internal(*this, version);
+}
+
+/*
+       Gets lighting value at face of node
+       
+       Parameters must consist of air and !air.
+       Order doesn't matter.
+
+       If either of the nodes doesn't exist, light is 0.
+       
+       parameters:
+               daynight_ratio: 0...1000
+               n: getNodeParent(p)
+               n2: getNodeParent(p + face_dir)
+               face_dir: axis oriented unit vector from p to p2
+       
+       returns encoded light value.
+*/
+u8 getFaceLight(u32 daynight_ratio, MapNode n, MapNode n2,
+               v3s16 face_dir)
+{
+       try{
+               u8 light;
+               u8 l1 = n.getLightBlend(daynight_ratio);
+               u8 l2 = n2.getLightBlend(daynight_ratio);
+               if(l1 > l2)
+                       light = l1;
+               else
+                       light = l2;
+
+               // Make some nice difference to different sides
+
+               // This makes light come from a corner
+               /*if(face_dir.X == 1 || face_dir.Z == 1 || face_dir.Y == -1)
+                       light = diminish_light(diminish_light(light));
+               else if(face_dir.X == -1 || face_dir.Z == -1)
+                       light = diminish_light(light);*/
+               
+               // All neighboring faces have different shade (like in minecraft)
+               if(face_dir.X == 1 || face_dir.X == -1 || face_dir.Y == -1)
+                       light = diminish_light(diminish_light(light));
+               else if(face_dir.Z == 1 || face_dir.Z == -1)
+                       light = diminish_light(light);
+
+               return light;
+       }
+       catch(InvalidPositionException &e)
+       {
+               return 0;
+       }
+}
+