From: Perttu Ahola Date: Fri, 25 Nov 2011 12:58:42 +0000 (+0200) Subject: Add Lua node definition stuff (not complete) X-Git-Url: http://81.2.79.47:8989/gitweb/?a=commitdiff_plain;h=697ff926ce62ad1800159246a66e4bf629b61194;p=zefram%2Fminetest%2Fminetest_engine.git Add Lua node definition stuff (not complete) --- diff --git a/src/scriptapi.cpp b/src/scriptapi.cpp index 45971963..aed4227c 100644 --- a/src/scriptapi.cpp +++ b/src/scriptapi.cpp @@ -157,14 +157,6 @@ static v3s16 readpos(lua_State *L, int index) // Correct rounding at <0 v3f pf = readFloatPos(L, index); return floatToInt(pf, BS); - /*v3s16 p; - lua_getfield(L, index, "x"); - p.X = lua_tonumber(L, -1); - lua_getfield(L, index, "y"); - p.Y = lua_tonumber(L, -1); - lua_getfield(L, index, "z"); - p.Z = lua_tonumber(L, -1); - return p;*/ } static void pushnode(lua_State *L, const MapNode &n, INodeDefManager *ndef) @@ -200,6 +192,170 @@ static MapNode readnode(lua_State *L, int index, INodeDefManager *ndef) return MapNode(ndef, name, param1, param2); } +static video::SColor readARGB8(lua_State *L, int index) +{ + video::SColor color; + luaL_checktype(L, index, LUA_TTABLE); + lua_getfield(L, index, "a"); + if(lua_isnumber(L, -1)) + color.setAlpha(lua_tonumber(L, -1)); + lua_pop(L, 1); + lua_getfield(L, index, "r"); + color.setRed(lua_tonumber(L, -1)); + lua_pop(L, 1); + lua_getfield(L, index, "g"); + color.setGreen(lua_tonumber(L, -1)); + lua_pop(L, 1); + lua_getfield(L, index, "b"); + color.setBlue(lua_tonumber(L, -1)); + lua_pop(L, 1); + return color; +} + +static bool getstringfield(lua_State *L, int table, + const char *fieldname, std::string &result) +{ + lua_getfield(L, table, fieldname); + bool got = false; + if(lua_isstring(L, -1)){ + result = lua_tostring(L, -1); + got = true; + } + lua_pop(L, 1); + return got; +} + +static bool getintfield(lua_State *L, int table, + const char *fieldname, int &result) +{ + lua_getfield(L, table, fieldname); + bool got = false; + if(lua_isnumber(L, -1)){ + result = lua_tonumber(L, -1); + got = true; + } + lua_pop(L, 1); + return got; +} + +static bool getfloatfield(lua_State *L, int table, + const char *fieldname, float &result) +{ + lua_getfield(L, table, fieldname); + bool got = false; + if(lua_isnumber(L, -1)){ + result = lua_tonumber(L, -1); + got = true; + } + lua_pop(L, 1); + return got; +} + +static bool getboolfield(lua_State *L, int table, + const char *fieldname, bool &result) +{ + lua_getfield(L, table, fieldname); + bool got = false; + if(lua_isboolean(L, -1)){ + result = lua_toboolean(L, -1); + got = true; + } + lua_pop(L, 1); + return got; +} + +static std::string getstringfield_default(lua_State *L, int table, + const char *fieldname, const std::string &default_) +{ + std::string result = default_; + getstringfield(L, table, fieldname, result); + return result; +} + +static int getintfield_default(lua_State *L, int table, + const char *fieldname, int default_) +{ + int result = default_; + getintfield(L, table, fieldname, result); + return result; +} + +static bool getboolfield_default(lua_State *L, int table, + const char *fieldname, bool default_) +{ + bool result = default_; + getboolfield(L, table, fieldname, result); + return result; +} + +struct EnumString +{ + int num; + const char *str; +}; + +static bool string_to_enum(const EnumString *spec, int &result, + const std::string &str) +{ + const EnumString *esp = spec; + while(esp->str){ + if(str == std::string(esp->str)){ + result = esp->num; + return true; + } + esp++; + } + return false; +} + +/*static bool enum_to_string(const EnumString *spec, std::string &result, + int num) +{ + const EnumString *esp = spec; + while(esp){ + if(num == esp->num){ + result = esp->str; + return true; + } + esp++; + } + return false; +}*/ + +static int getenumfield(lua_State *L, int table, + const char *fieldname, const EnumString *spec, int default_) +{ + int result = default_; + string_to_enum(spec, result, + getstringfield_default(L, table, fieldname, "")); + return result; +} + +struct EnumString es_DrawType[] = +{ + {NDT_NORMAL, "normal"}, + {NDT_AIRLIKE, "airlike"}, + {NDT_LIQUID, "liquid"}, + {NDT_FLOWINGLIQUID, "flowingliquid"}, + {NDT_GLASSLIKE, "glasslike"}, + {NDT_ALLFACES, "allfaces"}, + {NDT_ALLFACES_OPTIONAL, "allfaces_optional"}, + {NDT_TORCHLIKE, "torchlike"}, + {NDT_SIGNLIKE, "signlike"}, + {NDT_PLANTLIKE, "plantlike"}, + {NDT_FENCELIKE, "fencelike"}, + {NDT_RAILLIKE, "raillike"}, + {0, NULL}, +}; + +struct EnumString es_ContentParamType[] = +{ + {CPT_NONE, "none"}, + {CPT_LIGHT, "light"}, + {CPT_MINERAL, "mineral"}, + {CPT_FACEDIR_SIMPLE, "facedir_simple"}, +}; + /* Global functions */ @@ -254,51 +410,18 @@ static int l_register_tool(lua_State *L) server->getWritableToolDefManager(); ToolDefinition def; - - lua_getfield(L, table, "image"); - if(lua_isstring(L, -1)) - def.imagename = lua_tostring(L, -1); - lua_pop(L, 1); - lua_getfield(L, table, "basetime"); - def.properties.basetime = lua_tonumber(L, -1); - lua_pop(L, 1); - - lua_getfield(L, table, "dt_weight"); - def.properties.dt_weight = lua_tonumber(L, -1); - lua_pop(L, 1); - - lua_getfield(L, table, "dt_crackiness"); - def.properties.dt_crackiness = lua_tonumber(L, -1); - lua_pop(L, 1); - - lua_getfield(L, table, "dt_crumbliness"); - def.properties.dt_crumbliness = lua_tonumber(L, -1); - lua_pop(L, 1); - - lua_getfield(L, table, "dt_cuttability"); - def.properties.dt_cuttability = lua_tonumber(L, -1); - lua_pop(L, 1); - - lua_getfield(L, table, "basedurability"); - def.properties.basedurability = lua_tonumber(L, -1); - lua_pop(L, 1); - - lua_getfield(L, table, "dd_weight"); - def.properties.dd_weight = lua_tonumber(L, -1); - lua_pop(L, 1); - - lua_getfield(L, table, "dd_crackiness"); - def.properties.dd_crackiness = lua_tonumber(L, -1); - lua_pop(L, 1); - - lua_getfield(L, table, "dd_crumbliness"); - def.properties.dd_crumbliness = lua_tonumber(L, -1); - lua_pop(L, 1); - - lua_getfield(L, table, "dd_cuttability"); - def.properties.dd_cuttability = lua_tonumber(L, -1); - lua_pop(L, 1); + getstringfield(L, table, "image", def.imagename); + getfloatfield(L, table, "basetime", def.properties.basetime); + getfloatfield(L, table, "dt_weight", def.properties.dt_weight); + getfloatfield(L, table, "dt_crackiness", def.properties.dt_crackiness); + getfloatfield(L, table, "dt_crumbliness", def.properties.dt_crumbliness); + getfloatfield(L, table, "dt_cuttability", def.properties.dt_cuttability); + getfloatfield(L, table, "basedurability", def.properties.basedurability); + getfloatfield(L, table, "dd_weight", def.properties.dd_weight); + getfloatfield(L, table, "dd_crackiness", def.properties.dd_crackiness); + getfloatfield(L, table, "dd_crumbliness", def.properties.dd_crumbliness); + getfloatfield(L, table, "dd_cuttability", def.properties.dd_cuttability); tooldef->registerTool(name, def); return 0; /* number of results */ @@ -320,8 +443,17 @@ static int l_register_node(lua_State *L) server->getWritableNodeDefManager(); ContentFeatures f; + f.name = name; + /* + Visual definition + */ + + f.drawtype = (NodeDrawType)getenumfield(L, table0, "drawtype", es_DrawType, + f.drawtype); + getfloatfield(L, table0, "visual_scale", f.visual_scale); + lua_getfield(L, table0, "tile_images"); if(lua_istable(L, -1)){ int table = lua_gettop(L); @@ -344,11 +476,112 @@ static int l_register_node(lua_State *L) } lua_pop(L, 1); - lua_getfield(L, table0, "inventory_image"); - if(lua_isstring(L, -1)) - f.tname_inventory = lua_tostring(L, -1); + getstringfield(L, table0, "inventory_image", f.tname_inventory); + + lua_getfield(L, table0, "special_materials"); + if(lua_istable(L, -1)){ + int table = lua_gettop(L); + lua_pushnil(L); + int i = 0; + while(lua_next(L, table) != 0){ + // key at index -2 and value at index -1 + int smtable = lua_gettop(L); + std::string tname = getstringfield_default( + L, smtable, "image", ""); + bool backface_culling = getboolfield_default( + L, smtable, "backface_culling", true); + MaterialSpec mspec(tname, backface_culling); + f.setSpecialMaterial(i, mspec); + // removes value, keeps key for next iteration + lua_pop(L, 1); + i++; + if(i==6){ + lua_pop(L, 1); + break; + } + } + } lua_pop(L, 1); + f.alpha = getintfield_default(L, table0, "alpha", 255); + + /* + Other stuff + */ + + lua_getfield(L, table0, "post_effect_color"); + if(!lua_isnil(L, -1)) + f.post_effect_color = readARGB8(L, -1); + + f.param_type = (ContentParamType)getenumfield(L, table0, "paramtype", + es_ContentParamType, f.param_type); + + // True for all ground-like things like stone and mud, false for eg. trees + getboolfield(L, table0, "is_ground_content", f.is_ground_content); + getboolfield(L, table0, "light_propagates", f.light_propagates); + getboolfield(L, table0, "sunlight_propagates", f.sunlight_propagates); + // This is used for collision detection. + // Also for general solidness queries. + getboolfield(L, table0, "walkable", f.walkable); + // Player can point to these + getboolfield(L, table0, "pointable", f.pointable); + // Player can dig these + getboolfield(L, table0, "diggable", f.diggable); + // Player can climb these + getboolfield(L, table0, "climbable", f.climbable); + // Player can build on these + getboolfield(L, table0, "buildable_to", f.buildable_to); + // If true, param2 is set to direction when placed. Used for torches. + // NOTE: the direction format is quite inefficient and should be changed + getboolfield(L, table0, "wall_mounted", f.wall_mounted); + // If true, node is equivalent to air. Torches are, air is. Water is not. + // Is used for example to check whether a mud block can have grass on. + getboolfield(L, table0, "air_equivalent", f.air_equivalent); + // Whether this content type often contains mineral. + // Used for texture atlas creation. + // Currently only enabled for CONTENT_STONE. + getboolfield(L, table0, "often_contains_mineral", f.often_contains_mineral); + // Inventory item string as which the node appears in inventory when dug. + // Mineral overrides this. + getstringfield(L, table0, "dug_item", f.dug_item); + // Extra dug item and its rarity + getstringfield(L, table0, "extra_dug_item", f.extra_dug_item); + // Usual get interval for extra dug item + getintfield(L, table0, "extra_dug_item_rarity", f.extra_dug_item_rarity); + // Initial metadata is cloned from this + // TODO: As metadata name + // NodeMetadata *initial_metadata; + // Whether the node is non-liquid, source liquid or flowing liquid + // TODO: Enum read + // enum LiquidType liquid_type; + // If the content is liquid, this is the flowing version of the liquid. + // TODO: as name + // content_t liquid_alternative_flowing; + // If the content is liquid, this is the source version of the liquid. + // TODO: as name + // content_t liquid_alternative_source; + // Viscosity for fluid flow, ranging from 1 to 7, with + // 1 giving almost instantaneous propagation and 7 being + // the slowest possible + f.liquid_viscosity = getintfield_default(L, table0, + "liquid_viscosity", f.liquid_viscosity); + // Amount of light the node emits + f.light_source = getintfield_default(L, table0, + "light_source", f.light_source); + f.damage_per_second = getintfield_default(L, table0, + "damage_per_second", f.damage_per_second); + // TODO + //NodeBox selection_box; + // TODO + //MaterialProperties material; + getstringfield(L, table0, "cookresult_item", f.cookresult_item); + getfloatfield(L, table0, "furnace_cooktime", f.furnace_cooktime); + getfloatfield(L, table0, "furnace_burntime", f.furnace_burntime); + + /* + Temporary stuff + */ + // TODO: Replace with actual parameter reading // Temporarily set some sane parameters to allow digging f.material.diggability = DIGGABLE_NORMAL; @@ -358,7 +591,11 @@ static int l_register_node(lua_State *L) f.material.cuttability = 0; f.dug_item = std::string("NodeItem \"")+name+"\" 1"; + /* + Register it + */ nodedef->set(name, f); + return 0; /* number of results */ }