3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 #include "common/c_content.h"
20 #include "common/c_converter.h"
21 #include "common/c_types.h"
23 #include "object_properties.h"
24 #include "collision.h"
25 #include "cpp_api/s_node.h"
26 #include "lua_api/l_object.h"
27 #include "lua_api/l_item.h"
28 #include "common/c_internal.h"
33 #include "mapgen/mg_schematic.h"
35 #include "server/player_sao.h"
36 #include "util/pointedthing.h"
37 #include "debug.h" // For FATAL_ERROR
38 #include <json/json.h>
40 struct EnumString es_TileAnimationType[] =
43 {TAT_VERTICAL_FRAMES, "vertical_frames"},
44 {TAT_SHEET_2D, "sheet_2d"},
48 /******************************************************************************/
49 void read_item_definition(lua_State* L, int index,
50 const ItemDefinition &default_def, ItemDefinition &def)
53 index = lua_gettop(L) + 1 + index;
55 def.type = (ItemType)getenumfield(L, index, "type",
56 es_ItemType, ITEM_NONE);
57 getstringfield(L, index, "name", def.name);
58 getstringfield(L, index, "description", def.description);
59 getstringfield(L, index, "inventory_image", def.inventory_image);
60 getstringfield(L, index, "inventory_overlay", def.inventory_overlay);
61 getstringfield(L, index, "wield_image", def.wield_image);
62 getstringfield(L, index, "wield_overlay", def.wield_overlay);
63 getstringfield(L, index, "palette", def.palette_image);
66 lua_getfield(L, index, "color");
67 read_color(L, -1, &def.color);
70 lua_getfield(L, index, "wield_scale");
71 if(lua_istable(L, -1)){
72 def.wield_scale = check_v3f(L, -1);
76 int stack_max = getintfield_default(L, index, "stack_max", def.stack_max);
77 def.stack_max = rangelim(stack_max, 1, U16_MAX);
79 lua_getfield(L, index, "on_use");
80 def.usable = lua_isfunction(L, -1);
83 getboolfield(L, index, "liquids_pointable", def.liquids_pointable);
85 warn_if_field_exists(L, index, "tool_digging_properties",
86 "Obsolete; use tool_capabilities");
88 lua_getfield(L, index, "tool_capabilities");
89 if(lua_istable(L, -1)){
90 def.tool_capabilities = new ToolCapabilities(
91 read_tool_capabilities(L, -1));
94 // If name is "" (hand), ensure there are ToolCapabilities
95 // because it will be looked up there whenever any other item has
96 // no ToolCapabilities
97 if (def.name.empty() && def.tool_capabilities == NULL){
98 def.tool_capabilities = new ToolCapabilities();
101 lua_getfield(L, index, "groups");
102 read_groups(L, -1, def.groups);
105 lua_getfield(L, index, "sounds");
106 if (!lua_isnil(L, -1)) {
107 luaL_checktype(L, -1, LUA_TTABLE);
108 lua_getfield(L, -1, "place");
109 read_soundspec(L, -1, def.sound_place);
111 lua_getfield(L, -1, "place_failed");
112 read_soundspec(L, -1, def.sound_place_failed);
117 def.range = getfloatfield_default(L, index, "range", def.range);
119 // Client shall immediately place this node when player places the item.
120 // Server will update the precise end result a moment later.
121 // "" = no prediction
122 getstringfield(L, index, "node_placement_prediction",
123 def.node_placement_prediction);
126 /******************************************************************************/
127 void push_item_definition(lua_State *L, const ItemDefinition &i)
130 lua_pushstring(L, i.name.c_str());
131 lua_setfield(L, -2, "name");
132 lua_pushstring(L, i.description.c_str());
133 lua_setfield(L, -2, "description");
136 void push_item_definition_full(lua_State *L, const ItemDefinition &i)
138 std::string type(es_ItemType[(int)i.type].str);
141 lua_pushstring(L, i.name.c_str());
142 lua_setfield(L, -2, "name");
143 lua_pushstring(L, i.description.c_str());
144 lua_setfield(L, -2, "description");
145 lua_pushstring(L, type.c_str());
146 lua_setfield(L, -2, "type");
147 lua_pushstring(L, i.inventory_image.c_str());
148 lua_setfield(L, -2, "inventory_image");
149 lua_pushstring(L, i.inventory_overlay.c_str());
150 lua_setfield(L, -2, "inventory_overlay");
151 lua_pushstring(L, i.wield_image.c_str());
152 lua_setfield(L, -2, "wield_image");
153 lua_pushstring(L, i.wield_overlay.c_str());
154 lua_setfield(L, -2, "wield_overlay");
155 lua_pushstring(L, i.palette_image.c_str());
156 lua_setfield(L, -2, "palette_image");
157 push_ARGB8(L, i.color);
158 lua_setfield(L, -2, "color");
159 push_v3f(L, i.wield_scale);
160 lua_setfield(L, -2, "wield_scale");
161 lua_pushinteger(L, i.stack_max);
162 lua_setfield(L, -2, "stack_max");
163 lua_pushboolean(L, i.usable);
164 lua_setfield(L, -2, "usable");
165 lua_pushboolean(L, i.liquids_pointable);
166 lua_setfield(L, -2, "liquids_pointable");
167 if (i.tool_capabilities) {
168 push_tool_capabilities(L, *i.tool_capabilities);
169 lua_setfield(L, -2, "tool_capabilities");
171 push_groups(L, i.groups);
172 lua_setfield(L, -2, "groups");
173 push_soundspec(L, i.sound_place);
174 lua_setfield(L, -2, "sound_place");
175 push_soundspec(L, i.sound_place_failed);
176 lua_setfield(L, -2, "sound_place_failed");
177 lua_pushstring(L, i.node_placement_prediction.c_str());
178 lua_setfield(L, -2, "node_placement_prediction");
181 /******************************************************************************/
182 void read_object_properties(lua_State *L, int index,
183 ServerActiveObject *sao, ObjectProperties *prop, IItemDefManager *idef)
186 index = lua_gettop(L) + 1 + index;
187 if (lua_isnil(L, index))
190 luaL_checktype(L, -1, LUA_TTABLE);
193 if (getintfield(L, -1, "hp_max", hp_max)) {
194 prop->hp_max = (u16)rangelim(hp_max, 0, U16_MAX);
196 if (prop->hp_max < sao->getHP()) {
197 PlayerHPChangeReason reason(PlayerHPChangeReason::SET_HP);
198 sao->setHP(prop->hp_max, reason);
199 if (sao->getType() == ACTIVEOBJECT_TYPE_PLAYER)
200 sao->getEnv()->getGameDef()->SendPlayerHPOrDie((PlayerSAO *)sao, reason);
204 if (getintfield(L, -1, "breath_max", prop->breath_max)) {
205 if (sao->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
206 PlayerSAO *player = (PlayerSAO *)sao;
207 if (prop->breath_max < player->getBreath())
208 player->setBreath(prop->breath_max);
211 getboolfield(L, -1, "physical", prop->physical);
212 getboolfield(L, -1, "collide_with_objects", prop->collideWithObjects);
214 lua_getfield(L, -1, "collisionbox");
215 bool collisionbox_defined = lua_istable(L, -1);
216 if (collisionbox_defined)
217 prop->collisionbox = read_aabb3f(L, -1, 1.0);
220 lua_getfield(L, -1, "selectionbox");
221 if (lua_istable(L, -1))
222 prop->selectionbox = read_aabb3f(L, -1, 1.0);
223 else if (collisionbox_defined)
224 prop->selectionbox = prop->collisionbox;
227 getboolfield(L, -1, "pointable", prop->pointable);
228 getstringfield(L, -1, "visual", prop->visual);
230 getstringfield(L, -1, "mesh", prop->mesh);
232 lua_getfield(L, -1, "visual_size");
233 if (lua_istable(L, -1)) {
234 // Backwards compatibility: Also accept { x = ?, y = ? }
235 v2f scale_xy = read_v2f(L, -1);
237 f32 scale_z = scale_xy.X;
238 lua_getfield(L, -1, "z");
239 if (lua_isnumber(L, -1))
240 scale_z = lua_tonumber(L, -1);
243 prop->visual_size = v3f(scale_xy.X, scale_xy.Y, scale_z);
247 lua_getfield(L, -1, "textures");
248 if(lua_istable(L, -1)){
249 prop->textures.clear();
250 int table = lua_gettop(L);
252 while(lua_next(L, table) != 0){
253 // key at index -2 and value at index -1
254 if(lua_isstring(L, -1))
255 prop->textures.emplace_back(lua_tostring(L, -1));
257 prop->textures.emplace_back("");
258 // removes value, keeps key for next iteration
264 lua_getfield(L, -1, "colors");
265 if (lua_istable(L, -1)) {
266 int table = lua_gettop(L);
267 prop->colors.clear();
268 for (lua_pushnil(L); lua_next(L, table); lua_pop(L, 1)) {
269 video::SColor color(255, 255, 255, 255);
270 read_color(L, -1, &color);
271 prop->colors.push_back(color);
276 lua_getfield(L, -1, "spritediv");
277 if(lua_istable(L, -1))
278 prop->spritediv = read_v2s16(L, -1);
281 lua_getfield(L, -1, "initial_sprite_basepos");
282 if(lua_istable(L, -1))
283 prop->initial_sprite_basepos = read_v2s16(L, -1);
286 getboolfield(L, -1, "is_visible", prop->is_visible);
287 getboolfield(L, -1, "makes_footstep_sound", prop->makes_footstep_sound);
288 if (getfloatfield(L, -1, "stepheight", prop->stepheight))
289 prop->stepheight *= BS;
290 getfloatfield(L, -1, "eye_height", prop->eye_height);
292 getfloatfield(L, -1, "automatic_rotate", prop->automatic_rotate);
293 lua_getfield(L, -1, "automatic_face_movement_dir");
294 if (lua_isnumber(L, -1)) {
295 prop->automatic_face_movement_dir = true;
296 prop->automatic_face_movement_dir_offset = luaL_checknumber(L, -1);
297 } else if (lua_isboolean(L, -1)) {
298 prop->automatic_face_movement_dir = lua_toboolean(L, -1);
299 prop->automatic_face_movement_dir_offset = 0.0;
302 getboolfield(L, -1, "backface_culling", prop->backface_culling);
303 getintfield(L, -1, "glow", prop->glow);
305 getstringfield(L, -1, "nametag", prop->nametag);
306 lua_getfield(L, -1, "nametag_color");
307 if (!lua_isnil(L, -1)) {
308 video::SColor color = prop->nametag_color;
309 if (read_color(L, -1, &color))
310 prop->nametag_color = color;
314 lua_getfield(L, -1, "automatic_face_movement_max_rotation_per_sec");
315 if (lua_isnumber(L, -1)) {
316 prop->automatic_face_movement_max_rotation_per_sec = luaL_checknumber(L, -1);
320 getstringfield(L, -1, "infotext", prop->infotext);
321 getboolfield(L, -1, "static_save", prop->static_save);
323 lua_getfield(L, -1, "wield_item");
324 if (!lua_isnil(L, -1))
325 prop->wield_item = read_item(L, -1, idef).getItemString();
328 getfloatfield(L, -1, "zoom_fov", prop->zoom_fov);
329 getboolfield(L, -1, "use_texture_alpha", prop->use_texture_alpha);
330 getboolfield(L, -1, "shaded", prop->shaded);
332 getstringfield(L, -1, "damage_texture_modifier", prop->damage_texture_modifier);
335 /******************************************************************************/
336 void push_object_properties(lua_State *L, ObjectProperties *prop)
339 lua_pushnumber(L, prop->hp_max);
340 lua_setfield(L, -2, "hp_max");
341 lua_pushnumber(L, prop->breath_max);
342 lua_setfield(L, -2, "breath_max");
343 lua_pushboolean(L, prop->physical);
344 lua_setfield(L, -2, "physical");
345 lua_pushboolean(L, prop->collideWithObjects);
346 lua_setfield(L, -2, "collide_with_objects");
347 push_aabb3f(L, prop->collisionbox);
348 lua_setfield(L, -2, "collisionbox");
349 push_aabb3f(L, prop->selectionbox);
350 lua_setfield(L, -2, "selectionbox");
351 lua_pushboolean(L, prop->pointable);
352 lua_setfield(L, -2, "pointable");
353 lua_pushlstring(L, prop->visual.c_str(), prop->visual.size());
354 lua_setfield(L, -2, "visual");
355 lua_pushlstring(L, prop->mesh.c_str(), prop->mesh.size());
356 lua_setfield(L, -2, "mesh");
357 push_v3f(L, prop->visual_size);
358 lua_setfield(L, -2, "visual_size");
360 lua_createtable(L, prop->textures.size(), 0);
362 for (const std::string &texture : prop->textures) {
363 lua_pushlstring(L, texture.c_str(), texture.size());
364 lua_rawseti(L, -2, i++);
366 lua_setfield(L, -2, "textures");
368 lua_createtable(L, prop->colors.size(), 0);
370 for (const video::SColor &color : prop->colors) {
371 push_ARGB8(L, color);
372 lua_rawseti(L, -2, i++);
374 lua_setfield(L, -2, "colors");
376 push_v2s16(L, prop->spritediv);
377 lua_setfield(L, -2, "spritediv");
378 push_v2s16(L, prop->initial_sprite_basepos);
379 lua_setfield(L, -2, "initial_sprite_basepos");
380 lua_pushboolean(L, prop->is_visible);
381 lua_setfield(L, -2, "is_visible");
382 lua_pushboolean(L, prop->makes_footstep_sound);
383 lua_setfield(L, -2, "makes_footstep_sound");
384 lua_pushnumber(L, prop->stepheight / BS);
385 lua_setfield(L, -2, "stepheight");
386 lua_pushnumber(L, prop->eye_height);
387 lua_setfield(L, -2, "eye_height");
388 lua_pushnumber(L, prop->automatic_rotate);
389 lua_setfield(L, -2, "automatic_rotate");
390 if (prop->automatic_face_movement_dir)
391 lua_pushnumber(L, prop->automatic_face_movement_dir_offset);
393 lua_pushboolean(L, false);
394 lua_setfield(L, -2, "automatic_face_movement_dir");
395 lua_pushboolean(L, prop->backface_culling);
396 lua_setfield(L, -2, "backface_culling");
397 lua_pushnumber(L, prop->glow);
398 lua_setfield(L, -2, "glow");
399 lua_pushlstring(L, prop->nametag.c_str(), prop->nametag.size());
400 lua_setfield(L, -2, "nametag");
401 push_ARGB8(L, prop->nametag_color);
402 lua_setfield(L, -2, "nametag_color");
403 lua_pushnumber(L, prop->automatic_face_movement_max_rotation_per_sec);
404 lua_setfield(L, -2, "automatic_face_movement_max_rotation_per_sec");
405 lua_pushlstring(L, prop->infotext.c_str(), prop->infotext.size());
406 lua_setfield(L, -2, "infotext");
407 lua_pushboolean(L, prop->static_save);
408 lua_setfield(L, -2, "static_save");
409 lua_pushlstring(L, prop->wield_item.c_str(), prop->wield_item.size());
410 lua_setfield(L, -2, "wield_item");
411 lua_pushnumber(L, prop->zoom_fov);
412 lua_setfield(L, -2, "zoom_fov");
413 lua_pushboolean(L, prop->use_texture_alpha);
414 lua_setfield(L, -2, "use_texture_alpha");
415 lua_pushboolean(L, prop->shaded);
416 lua_setfield(L, -2, "shaded");
417 lua_pushlstring(L, prop->damage_texture_modifier.c_str(), prop->damage_texture_modifier.size());
418 lua_setfield(L, -2, "damage_texture_modifier");
421 /******************************************************************************/
422 TileDef read_tiledef(lua_State *L, int index, u8 drawtype)
425 index = lua_gettop(L) + 1 + index;
429 bool default_tiling = true;
430 bool default_culling = true;
433 case NDT_PLANTLIKE_ROOTED:
435 default_tiling = false;
436 // "break" is omitted here intentionaly, as PLANTLIKE
437 // FIRELIKE drawtype both should default to having
438 // backface_culling to false.
441 default_culling = false;
447 // key at index -2 and value at index
448 if(lua_isstring(L, index)){
449 // "default_lava.png"
450 tiledef.name = lua_tostring(L, index);
451 tiledef.tileable_vertical = default_tiling;
452 tiledef.tileable_horizontal = default_tiling;
453 tiledef.backface_culling = default_culling;
455 else if(lua_istable(L, index))
457 // name="default_lava.png"
459 getstringfield(L, index, "name", tiledef.name);
460 getstringfield(L, index, "image", tiledef.name); // MaterialSpec compat.
461 tiledef.backface_culling = getboolfield_default(
462 L, index, "backface_culling", default_culling);
463 tiledef.tileable_horizontal = getboolfield_default(
464 L, index, "tileable_horizontal", default_tiling);
465 tiledef.tileable_vertical = getboolfield_default(
466 L, index, "tileable_vertical", default_tiling);
467 std::string align_style;
468 if (getstringfield(L, index, "align_style", align_style)) {
469 if (align_style == "user")
470 tiledef.align_style = ALIGN_STYLE_USER_DEFINED;
471 else if (align_style == "world")
472 tiledef.align_style = ALIGN_STYLE_WORLD;
474 tiledef.align_style = ALIGN_STYLE_NODE;
476 tiledef.scale = getintfield_default(L, index, "scale", 0);
478 lua_getfield(L, index, "color");
479 tiledef.has_color = read_color(L, -1, &tiledef.color);
482 lua_getfield(L, index, "animation");
483 tiledef.animation = read_animation_definition(L, -1);
490 /******************************************************************************/
491 ContentFeatures read_content_features(lua_State *L, int index)
494 index = lua_gettop(L) + 1 + index;
498 /* Cache existence of some callbacks */
499 lua_getfield(L, index, "on_construct");
500 if(!lua_isnil(L, -1)) f.has_on_construct = true;
502 lua_getfield(L, index, "on_destruct");
503 if(!lua_isnil(L, -1)) f.has_on_destruct = true;
505 lua_getfield(L, index, "after_destruct");
506 if(!lua_isnil(L, -1)) f.has_after_destruct = true;
509 lua_getfield(L, index, "on_rightclick");
510 f.rightclickable = lua_isfunction(L, -1);
514 getstringfield(L, index, "name", f.name);
517 lua_getfield(L, index, "groups");
518 read_groups(L, -1, f.groups);
521 /* Visual definition */
523 f.drawtype = (NodeDrawType)getenumfield(L, index, "drawtype",
524 ScriptApiNode::es_DrawType,NDT_NORMAL);
525 getfloatfield(L, index, "visual_scale", f.visual_scale);
527 /* Meshnode model filename */
528 getstringfield(L, index, "mesh", f.mesh);
531 lua_getfield(L, index, "tiles");
532 // If nil, try the deprecated name "tile_images" instead
533 if(lua_isnil(L, -1)){
535 warn_if_field_exists(L, index, "tile_images",
536 "Deprecated; new name is \"tiles\".");
537 lua_getfield(L, index, "tile_images");
539 if(lua_istable(L, -1)){
540 int table = lua_gettop(L);
543 while(lua_next(L, table) != 0){
544 // Read tiledef from value
545 f.tiledef[i] = read_tiledef(L, -1, f.drawtype);
546 // removes value, keeps key for next iteration
554 // Copy last value to all remaining textures
556 TileDef lasttile = f.tiledef[i-1];
558 f.tiledef[i] = lasttile;
565 // overlay_tiles = {}
566 lua_getfield(L, index, "overlay_tiles");
567 if (lua_istable(L, -1)) {
568 int table = lua_gettop(L);
571 while (lua_next(L, table) != 0) {
572 // Read tiledef from value
573 f.tiledef_overlay[i] = read_tiledef(L, -1, f.drawtype);
574 // removes value, keeps key for next iteration
582 // Copy last value to all remaining textures
584 TileDef lasttile = f.tiledef_overlay[i - 1];
586 f.tiledef_overlay[i] = lasttile;
593 // special_tiles = {}
594 lua_getfield(L, index, "special_tiles");
595 // If nil, try the deprecated name "special_materials" instead
596 if(lua_isnil(L, -1)){
598 warn_if_field_exists(L, index, "special_materials",
599 "Deprecated; new name is \"special_tiles\".");
600 lua_getfield(L, index, "special_materials");
602 if(lua_istable(L, -1)){
603 int table = lua_gettop(L);
606 while(lua_next(L, table) != 0){
607 // Read tiledef from value
608 f.tiledef_special[i] = read_tiledef(L, -1, f.drawtype);
609 // removes value, keeps key for next iteration
612 if(i==CF_SPECIAL_COUNT){
620 f.alpha = getintfield_default(L, index, "alpha", 255);
622 bool usealpha = getboolfield_default(L, index,
623 "use_texture_alpha", false);
628 lua_getfield(L, index, "color");
629 read_color(L, -1, &f.color);
632 getstringfield(L, index, "palette", f.palette_name);
636 lua_getfield(L, index, "post_effect_color");
637 read_color(L, -1, &f.post_effect_color);
640 f.param_type = (ContentParamType)getenumfield(L, index, "paramtype",
641 ScriptApiNode::es_ContentParamType, CPT_NONE);
642 f.param_type_2 = (ContentParamType2)getenumfield(L, index, "paramtype2",
643 ScriptApiNode::es_ContentParamType2, CPT2_NONE);
645 if (!f.palette_name.empty() &&
646 !(f.param_type_2 == CPT2_COLOR ||
647 f.param_type_2 == CPT2_COLORED_FACEDIR ||
648 f.param_type_2 == CPT2_COLORED_WALLMOUNTED))
649 warningstream << "Node " << f.name.c_str()
650 << " has a palette, but not a suitable paramtype2." << std::endl;
652 // Warn about some obsolete fields
653 warn_if_field_exists(L, index, "wall_mounted",
654 "Obsolete; use paramtype2 = 'wallmounted'");
655 warn_if_field_exists(L, index, "light_propagates",
656 "Obsolete; determined from paramtype");
657 warn_if_field_exists(L, index, "dug_item",
658 "Obsolete; use 'drop' field");
659 warn_if_field_exists(L, index, "extra_dug_item",
660 "Obsolete; use 'drop' field");
661 warn_if_field_exists(L, index, "extra_dug_item_rarity",
662 "Obsolete; use 'drop' field");
663 warn_if_field_exists(L, index, "metadata_name",
664 "Obsolete; use on_add and metadata callbacks");
666 // True for all ground-like things like stone and mud, false for eg. trees
667 getboolfield(L, index, "is_ground_content", f.is_ground_content);
668 f.light_propagates = (f.param_type == CPT_LIGHT);
669 getboolfield(L, index, "sunlight_propagates", f.sunlight_propagates);
670 // This is used for collision detection.
671 // Also for general solidness queries.
672 getboolfield(L, index, "walkable", f.walkable);
673 // Player can point to these
674 getboolfield(L, index, "pointable", f.pointable);
675 // Player can dig these
676 getboolfield(L, index, "diggable", f.diggable);
677 // Player can climb these
678 getboolfield(L, index, "climbable", f.climbable);
679 // Player can build on these
680 getboolfield(L, index, "buildable_to", f.buildable_to);
681 // Liquids flow into and replace node
682 getboolfield(L, index, "floodable", f.floodable);
683 // Whether the node is non-liquid, source liquid or flowing liquid
684 f.liquid_type = (LiquidType)getenumfield(L, index, "liquidtype",
685 ScriptApiNode::es_LiquidType, LIQUID_NONE);
686 // If the content is liquid, this is the flowing version of the liquid.
687 getstringfield(L, index, "liquid_alternative_flowing",
688 f.liquid_alternative_flowing);
689 // If the content is liquid, this is the source version of the liquid.
690 getstringfield(L, index, "liquid_alternative_source",
691 f.liquid_alternative_source);
692 // Viscosity for fluid flow, ranging from 1 to 7, with
693 // 1 giving almost instantaneous propagation and 7 being
694 // the slowest possible
695 f.liquid_viscosity = getintfield_default(L, index,
696 "liquid_viscosity", f.liquid_viscosity);
697 f.liquid_range = getintfield_default(L, index,
698 "liquid_range", f.liquid_range);
699 f.leveled = getintfield_default(L, index, "leveled", f.leveled);
700 f.leveled_max = getintfield_default(L, index,
701 "leveled_max", f.leveled_max);
703 getboolfield(L, index, "liquid_renewable", f.liquid_renewable);
704 f.drowning = getintfield_default(L, index,
705 "drowning", f.drowning);
706 // Amount of light the node emits
707 f.light_source = getintfield_default(L, index,
708 "light_source", f.light_source);
709 if (f.light_source > LIGHT_MAX) {
710 warningstream << "Node " << f.name.c_str()
711 << " had greater light_source than " << LIGHT_MAX
712 << ", it was reduced." << std::endl;
713 f.light_source = LIGHT_MAX;
715 f.damage_per_second = getintfield_default(L, index,
716 "damage_per_second", f.damage_per_second);
718 lua_getfield(L, index, "node_box");
719 if(lua_istable(L, -1))
720 f.node_box = read_nodebox(L, -1);
723 lua_getfield(L, index, "connects_to");
724 if (lua_istable(L, -1)) {
725 int table = lua_gettop(L);
727 while (lua_next(L, table) != 0) {
729 f.connects_to.emplace_back(lua_tostring(L, -1));
735 lua_getfield(L, index, "connect_sides");
736 if (lua_istable(L, -1)) {
737 int table = lua_gettop(L);
739 while (lua_next(L, table) != 0) {
741 std::string side(lua_tostring(L, -1));
742 // Note faces are flipped to make checking easier
744 f.connect_sides |= 2;
745 else if (side == "bottom")
746 f.connect_sides |= 1;
747 else if (side == "front")
748 f.connect_sides |= 16;
749 else if (side == "left")
750 f.connect_sides |= 32;
751 else if (side == "back")
752 f.connect_sides |= 4;
753 else if (side == "right")
754 f.connect_sides |= 8;
756 warningstream << "Unknown value for \"connect_sides\": "
757 << side << std::endl;
763 lua_getfield(L, index, "selection_box");
764 if(lua_istable(L, -1))
765 f.selection_box = read_nodebox(L, -1);
768 lua_getfield(L, index, "collision_box");
769 if(lua_istable(L, -1))
770 f.collision_box = read_nodebox(L, -1);
773 f.waving = getintfield_default(L, index,
776 // Set to true if paramtype used to be 'facedir_simple'
777 getboolfield(L, index, "legacy_facedir_simple", f.legacy_facedir_simple);
778 // Set to true if wall_mounted used to be set to true
779 getboolfield(L, index, "legacy_wallmounted", f.legacy_wallmounted);
782 lua_getfield(L, index, "sounds");
783 if(lua_istable(L, -1)){
784 lua_getfield(L, -1, "footstep");
785 read_soundspec(L, -1, f.sound_footstep);
787 lua_getfield(L, -1, "dig");
788 read_soundspec(L, -1, f.sound_dig);
790 lua_getfield(L, -1, "dug");
791 read_soundspec(L, -1, f.sound_dug);
796 // Node immediately placed by client when node is dug
797 getstringfield(L, index, "node_dig_prediction",
798 f.node_dig_prediction);
803 void push_content_features(lua_State *L, const ContentFeatures &c)
805 std::string paramtype(ScriptApiNode::es_ContentParamType[(int)c.param_type].str);
806 std::string paramtype2(ScriptApiNode::es_ContentParamType2[(int)c.param_type_2].str);
807 std::string drawtype(ScriptApiNode::es_DrawType[(int)c.drawtype].str);
808 std::string liquid_type(ScriptApiNode::es_LiquidType[(int)c.liquid_type].str);
810 /* Missing "tiles" because I don't see a usecase (at least not yet). */
813 lua_pushboolean(L, c.has_on_construct);
814 lua_setfield(L, -2, "has_on_construct");
815 lua_pushboolean(L, c.has_on_destruct);
816 lua_setfield(L, -2, "has_on_destruct");
817 lua_pushboolean(L, c.has_after_destruct);
818 lua_setfield(L, -2, "has_after_destruct");
819 lua_pushstring(L, c.name.c_str());
820 lua_setfield(L, -2, "name");
821 push_groups(L, c.groups);
822 lua_setfield(L, -2, "groups");
823 lua_pushstring(L, paramtype.c_str());
824 lua_setfield(L, -2, "paramtype");
825 lua_pushstring(L, paramtype2.c_str());
826 lua_setfield(L, -2, "paramtype2");
827 lua_pushstring(L, drawtype.c_str());
828 lua_setfield(L, -2, "drawtype");
829 if (!c.mesh.empty()) {
830 lua_pushstring(L, c.mesh.c_str());
831 lua_setfield(L, -2, "mesh");
834 push_ARGB8(L, c.minimap_color); // I know this is not set-able w/ register_node,
835 lua_setfield(L, -2, "minimap_color"); // but the people need to know!
837 lua_pushnumber(L, c.visual_scale);
838 lua_setfield(L, -2, "visual_scale");
839 lua_pushnumber(L, c.alpha);
840 lua_setfield(L, -2, "alpha");
841 if (!c.palette_name.empty()) {
842 push_ARGB8(L, c.color);
843 lua_setfield(L, -2, "color");
845 lua_pushstring(L, c.palette_name.c_str());
846 lua_setfield(L, -2, "palette_name");
848 push_palette(L, c.palette);
849 lua_setfield(L, -2, "palette");
851 lua_pushnumber(L, c.waving);
852 lua_setfield(L, -2, "waving");
853 lua_pushnumber(L, c.connect_sides);
854 lua_setfield(L, -2, "connect_sides");
856 lua_createtable(L, c.connects_to.size(), 0);
858 for (const std::string &it : c.connects_to) {
859 lua_pushlstring(L, it.c_str(), it.size());
860 lua_rawseti(L, -2, i++);
862 lua_setfield(L, -2, "connects_to");
864 push_ARGB8(L, c.post_effect_color);
865 lua_setfield(L, -2, "post_effect_color");
866 lua_pushnumber(L, c.leveled);
867 lua_setfield(L, -2, "leveled");
868 lua_pushnumber(L, c.leveled_max);
869 lua_setfield(L, -2, "leveled_max");
870 lua_pushboolean(L, c.sunlight_propagates);
871 lua_setfield(L, -2, "sunlight_propagates");
872 lua_pushnumber(L, c.light_source);
873 lua_setfield(L, -2, "light_source");
874 lua_pushboolean(L, c.is_ground_content);
875 lua_setfield(L, -2, "is_ground_content");
876 lua_pushboolean(L, c.walkable);
877 lua_setfield(L, -2, "walkable");
878 lua_pushboolean(L, c.pointable);
879 lua_setfield(L, -2, "pointable");
880 lua_pushboolean(L, c.diggable);
881 lua_setfield(L, -2, "diggable");
882 lua_pushboolean(L, c.climbable);
883 lua_setfield(L, -2, "climbable");
884 lua_pushboolean(L, c.buildable_to);
885 lua_setfield(L, -2, "buildable_to");
886 lua_pushboolean(L, c.rightclickable);
887 lua_setfield(L, -2, "rightclickable");
888 lua_pushnumber(L, c.damage_per_second);
889 lua_setfield(L, -2, "damage_per_second");
891 lua_pushstring(L, liquid_type.c_str());
892 lua_setfield(L, -2, "liquid_type");
893 lua_pushstring(L, c.liquid_alternative_flowing.c_str());
894 lua_setfield(L, -2, "liquid_alternative_flowing");
895 lua_pushstring(L, c.liquid_alternative_source.c_str());
896 lua_setfield(L, -2, "liquid_alternative_source");
897 lua_pushnumber(L, c.liquid_viscosity);
898 lua_setfield(L, -2, "liquid_viscosity");
899 lua_pushboolean(L, c.liquid_renewable);
900 lua_setfield(L, -2, "liquid_renewable");
901 lua_pushnumber(L, c.liquid_range);
902 lua_setfield(L, -2, "liquid_range");
904 lua_pushnumber(L, c.drowning);
905 lua_setfield(L, -2, "drowning");
906 lua_pushboolean(L, c.floodable);
907 lua_setfield(L, -2, "floodable");
908 push_nodebox(L, c.node_box);
909 lua_setfield(L, -2, "node_box");
910 push_nodebox(L, c.selection_box);
911 lua_setfield(L, -2, "selection_box");
912 push_nodebox(L, c.collision_box);
913 lua_setfield(L, -2, "collision_box");
915 push_soundspec(L, c.sound_footstep);
916 lua_setfield(L, -2, "sound_footstep");
917 push_soundspec(L, c.sound_dig);
918 lua_setfield(L, -2, "sound_dig");
919 push_soundspec(L, c.sound_dug);
920 lua_setfield(L, -2, "sound_dug");
921 lua_setfield(L, -2, "sounds");
922 lua_pushboolean(L, c.legacy_facedir_simple);
923 lua_setfield(L, -2, "legacy_facedir_simple");
924 lua_pushboolean(L, c.legacy_wallmounted);
925 lua_setfield(L, -2, "legacy_wallmounted");
926 lua_pushstring(L, c.node_dig_prediction.c_str());
927 lua_setfield(L, -2, "node_dig_prediction");
930 /******************************************************************************/
931 void push_nodebox(lua_State *L, const NodeBox &box)
936 case NODEBOX_REGULAR:
937 lua_pushstring(L, "regular");
938 lua_setfield(L, -2, "type");
940 case NODEBOX_LEVELED:
942 lua_pushstring(L, "fixed");
943 lua_setfield(L, -2, "type");
944 push_box(L, box.fixed);
945 lua_setfield(L, -2, "fixed");
947 case NODEBOX_WALLMOUNTED:
948 lua_pushstring(L, "wallmounted");
949 lua_setfield(L, -2, "type");
950 push_aabb3f(L, box.wall_top);
951 lua_setfield(L, -2, "wall_top");
952 push_aabb3f(L, box.wall_bottom);
953 lua_setfield(L, -2, "wall_bottom");
954 push_aabb3f(L, box.wall_side);
955 lua_setfield(L, -2, "wall_side");
957 case NODEBOX_CONNECTED:
958 lua_pushstring(L, "connected");
959 lua_setfield(L, -2, "type");
960 push_box(L, box.connect_top);
961 lua_setfield(L, -2, "connect_top");
962 push_box(L, box.connect_bottom);
963 lua_setfield(L, -2, "connect_bottom");
964 push_box(L, box.connect_front);
965 lua_setfield(L, -2, "connect_front");
966 push_box(L, box.connect_back);
967 lua_setfield(L, -2, "connect_back");
968 push_box(L, box.connect_left);
969 lua_setfield(L, -2, "connect_left");
970 push_box(L, box.connect_right);
971 lua_setfield(L, -2, "connect_right");
974 FATAL_ERROR("Invalid box.type");
979 void push_box(lua_State *L, const std::vector<aabb3f> &box)
981 lua_createtable(L, box.size(), 0);
983 for (const aabb3f &it : box) {
985 lua_rawseti(L, -2, i++);
989 /******************************************************************************/
990 void push_palette(lua_State *L, const std::vector<video::SColor> *palette)
992 lua_createtable(L, palette->size(), 0);
993 int newTable = lua_gettop(L);
995 std::vector<video::SColor>::const_iterator iter;
996 for (iter = palette->begin(); iter != palette->end(); ++iter) {
997 push_ARGB8(L, (*iter));
998 lua_rawseti(L, newTable, index);
1003 /******************************************************************************/
1004 void read_server_sound_params(lua_State *L, int index,
1005 ServerSoundParams ¶ms)
1008 index = lua_gettop(L) + 1 + index;
1010 params = ServerSoundParams();
1011 if(lua_istable(L, index)){
1012 getfloatfield(L, index, "gain", params.gain);
1013 getstringfield(L, index, "to_player", params.to_player);
1014 getfloatfield(L, index, "fade", params.fade);
1015 getfloatfield(L, index, "pitch", params.pitch);
1016 lua_getfield(L, index, "pos");
1017 if(!lua_isnil(L, -1)){
1018 v3f p = read_v3f(L, -1)*BS;
1020 params.type = ServerSoundParams::SSP_POSITIONAL;
1023 lua_getfield(L, index, "object");
1024 if(!lua_isnil(L, -1)){
1025 ObjectRef *ref = ObjectRef::checkobject(L, -1);
1026 ServerActiveObject *sao = ObjectRef::getobject(ref);
1028 params.object = sao->getId();
1029 params.type = ServerSoundParams::SSP_OBJECT;
1033 params.max_hear_distance = BS*getfloatfield_default(L, index,
1034 "max_hear_distance", params.max_hear_distance/BS);
1035 getboolfield(L, index, "loop", params.loop);
1036 getstringfield(L, index, "exclude_player", params.exclude_player);
1040 /******************************************************************************/
1041 void read_soundspec(lua_State *L, int index, SimpleSoundSpec &spec)
1044 index = lua_gettop(L) + 1 + index;
1045 if (lua_isnil(L, index))
1048 if (lua_istable(L, index)) {
1049 getstringfield(L, index, "name", spec.name);
1050 getfloatfield(L, index, "gain", spec.gain);
1051 getfloatfield(L, index, "fade", spec.fade);
1052 getfloatfield(L, index, "pitch", spec.pitch);
1053 } else if (lua_isstring(L, index)) {
1054 spec.name = lua_tostring(L, index);
1058 void push_soundspec(lua_State *L, const SimpleSoundSpec &spec)
1060 lua_createtable(L, 0, 3);
1061 lua_pushstring(L, spec.name.c_str());
1062 lua_setfield(L, -2, "name");
1063 lua_pushnumber(L, spec.gain);
1064 lua_setfield(L, -2, "gain");
1065 lua_pushnumber(L, spec.fade);
1066 lua_setfield(L, -2, "fade");
1067 lua_pushnumber(L, spec.pitch);
1068 lua_setfield(L, -2, "pitch");
1071 /******************************************************************************/
1072 NodeBox read_nodebox(lua_State *L, int index)
1075 if (lua_isnil(L, -1))
1078 luaL_checktype(L, -1, LUA_TTABLE);
1080 nodebox.type = (NodeBoxType)getenumfield(L, index, "type",
1081 ScriptApiNode::es_NodeBoxType, NODEBOX_REGULAR);
1083 #define NODEBOXREAD(n, s){ \
1084 lua_getfield(L, index, (s)); \
1085 if (lua_istable(L, -1)) \
1086 (n) = read_aabb3f(L, -1, BS); \
1090 #define NODEBOXREADVEC(n, s) \
1091 lua_getfield(L, index, (s)); \
1092 if (lua_istable(L, -1)) \
1093 (n) = read_aabb3f_vector(L, -1, BS); \
1096 NODEBOXREADVEC(nodebox.fixed, "fixed");
1097 NODEBOXREAD(nodebox.wall_top, "wall_top");
1098 NODEBOXREAD(nodebox.wall_bottom, "wall_bottom");
1099 NODEBOXREAD(nodebox.wall_side, "wall_side");
1100 NODEBOXREADVEC(nodebox.connect_top, "connect_top");
1101 NODEBOXREADVEC(nodebox.connect_bottom, "connect_bottom");
1102 NODEBOXREADVEC(nodebox.connect_front, "connect_front");
1103 NODEBOXREADVEC(nodebox.connect_left, "connect_left");
1104 NODEBOXREADVEC(nodebox.connect_back, "connect_back");
1105 NODEBOXREADVEC(nodebox.connect_right, "connect_right");
1106 NODEBOXREADVEC(nodebox.disconnected_top, "disconnected_top");
1107 NODEBOXREADVEC(nodebox.disconnected_bottom, "disconnected_bottom");
1108 NODEBOXREADVEC(nodebox.disconnected_front, "disconnected_front");
1109 NODEBOXREADVEC(nodebox.disconnected_left, "disconnected_left");
1110 NODEBOXREADVEC(nodebox.disconnected_back, "disconnected_back");
1111 NODEBOXREADVEC(nodebox.disconnected_right, "disconnected_right");
1112 NODEBOXREADVEC(nodebox.disconnected, "disconnected");
1113 NODEBOXREADVEC(nodebox.disconnected_sides, "disconnected_sides");
1118 /******************************************************************************/
1119 MapNode readnode(lua_State *L, int index, const NodeDefManager *ndef)
1121 lua_getfield(L, index, "name");
1122 if (!lua_isstring(L, -1))
1123 throw LuaError("Node name is not set or is not a string!");
1124 std::string name = lua_tostring(L, -1);
1128 lua_getfield(L, index, "param1");
1129 if (!lua_isnil(L, -1))
1130 param1 = lua_tonumber(L, -1);
1134 lua_getfield(L, index, "param2");
1135 if (!lua_isnil(L, -1))
1136 param2 = lua_tonumber(L, -1);
1139 content_t id = CONTENT_IGNORE;
1140 if (!ndef->getId(name, id))
1141 throw LuaError("\"" + name + "\" is not a registered node!");
1143 return {id, param1, param2};
1146 /******************************************************************************/
1147 void pushnode(lua_State *L, const MapNode &n, const NodeDefManager *ndef)
1149 lua_createtable(L, 0, 3);
1150 lua_pushstring(L, ndef->get(n).name.c_str());
1151 lua_setfield(L, -2, "name");
1152 lua_pushinteger(L, n.getParam1());
1153 lua_setfield(L, -2, "param1");
1154 lua_pushinteger(L, n.getParam2());
1155 lua_setfield(L, -2, "param2");
1158 /******************************************************************************/
1159 void warn_if_field_exists(lua_State *L, int table,
1160 const char *name, const std::string &message)
1162 lua_getfield(L, table, name);
1163 if (!lua_isnil(L, -1)) {
1164 warningstream << "Field \"" << name << "\": "
1165 << message << std::endl;
1166 infostream << script_get_backtrace(L) << std::endl;
1171 /******************************************************************************/
1172 int getenumfield(lua_State *L, int table,
1173 const char *fieldname, const EnumString *spec, int default_)
1175 int result = default_;
1176 string_to_enum(spec, result,
1177 getstringfield_default(L, table, fieldname, ""));
1181 /******************************************************************************/
1182 bool string_to_enum(const EnumString *spec, int &result,
1183 const std::string &str)
1185 const EnumString *esp = spec;
1187 if (!strcmp(str.c_str(), esp->str)) {
1196 /******************************************************************************/
1197 ItemStack read_item(lua_State* L, int index, IItemDefManager *idef)
1200 index = lua_gettop(L) + 1 + index;
1202 if (lua_isnil(L, index)) {
1206 if (lua_isuserdata(L, index)) {
1207 // Convert from LuaItemStack
1208 LuaItemStack *o = LuaItemStack::checkobject(L, index);
1209 return o->getItem();
1212 if (lua_isstring(L, index)) {
1213 // Convert from itemstring
1214 std::string itemstring = lua_tostring(L, index);
1218 item.deSerialize(itemstring, idef);
1221 catch(SerializationError &e)
1223 warningstream<<"unable to create item from itemstring"
1224 <<": "<<itemstring<<std::endl;
1228 else if(lua_istable(L, index))
1230 // Convert from table
1231 std::string name = getstringfield_default(L, index, "name", "");
1232 int count = getintfield_default(L, index, "count", 1);
1233 int wear = getintfield_default(L, index, "wear", 0);
1235 ItemStack istack(name, count, wear, idef);
1237 // BACKWARDS COMPATIBLITY
1238 std::string value = getstringfield_default(L, index, "metadata", "");
1239 istack.metadata.setString("", value);
1242 lua_getfield(L, index, "meta");
1243 int fieldstable = lua_gettop(L);
1244 if (lua_istable(L, fieldstable)) {
1246 while (lua_next(L, fieldstable) != 0) {
1247 // key at index -2 and value at index -1
1248 std::string key = lua_tostring(L, -2);
1250 const char *value_cs = lua_tolstring(L, -1, &value_len);
1251 std::string value(value_cs, value_len);
1252 istack.metadata.setString(key, value);
1253 lua_pop(L, 1); // removes value, keeps key for next iteration
1259 throw LuaError("Expecting itemstack, itemstring, table or nil");
1263 /******************************************************************************/
1264 void push_tool_capabilities(lua_State *L,
1265 const ToolCapabilities &toolcap)
1268 setfloatfield(L, -1, "full_punch_interval", toolcap.full_punch_interval);
1269 setintfield(L, -1, "max_drop_level", toolcap.max_drop_level);
1270 setintfield(L, -1, "punch_attack_uses", toolcap.punch_attack_uses);
1271 // Create groupcaps table
1273 // For each groupcap
1274 for (const auto &gc_it : toolcap.groupcaps) {
1275 // Create groupcap table
1277 const std::string &name = gc_it.first;
1278 const ToolGroupCap &groupcap = gc_it.second;
1279 // Create subtable "times"
1281 for (auto time : groupcap.times) {
1282 lua_pushinteger(L, time.first);
1283 lua_pushnumber(L, time.second);
1284 lua_settable(L, -3);
1286 // Set subtable "times"
1287 lua_setfield(L, -2, "times");
1288 // Set simple parameters
1289 setintfield(L, -1, "maxlevel", groupcap.maxlevel);
1290 setintfield(L, -1, "uses", groupcap.uses);
1291 // Insert groupcap table into groupcaps table
1292 lua_setfield(L, -2, name.c_str());
1294 // Set groupcaps table
1295 lua_setfield(L, -2, "groupcaps");
1296 //Create damage_groups table
1298 // For each damage group
1299 for (const auto &damageGroup : toolcap.damageGroups) {
1300 // Create damage group table
1301 lua_pushinteger(L, damageGroup.second);
1302 lua_setfield(L, -2, damageGroup.first.c_str());
1304 lua_setfield(L, -2, "damage_groups");
1307 /******************************************************************************/
1308 void push_inventory_list(lua_State *L, Inventory *inv, const char *name)
1310 InventoryList *invlist = inv->getList(name);
1311 if(invlist == NULL){
1315 std::vector<ItemStack> items;
1316 for(u32 i=0; i<invlist->getSize(); i++)
1317 items.push_back(invlist->getItem(i));
1318 push_items(L, items);
1321 /******************************************************************************/
1322 void read_inventory_list(lua_State *L, int tableindex,
1323 Inventory *inv, const char *name, Server* srv, int forcesize)
1326 tableindex = lua_gettop(L) + 1 + tableindex;
1327 // If nil, delete list
1328 if(lua_isnil(L, tableindex)){
1329 inv->deleteList(name);
1332 // Otherwise set list
1333 std::vector<ItemStack> items = read_items(L, tableindex,srv);
1334 int listsize = (forcesize != -1) ? forcesize : items.size();
1335 InventoryList *invlist = inv->addList(name, listsize);
1337 for(std::vector<ItemStack>::const_iterator
1338 i = items.begin(); i != items.end(); ++i){
1339 if(forcesize != -1 && index == forcesize)
1341 invlist->changeItem(index, *i);
1344 while(forcesize != -1 && index < forcesize){
1345 invlist->deleteItem(index);
1350 /******************************************************************************/
1351 struct TileAnimationParams read_animation_definition(lua_State *L, int index)
1354 index = lua_gettop(L) + 1 + index;
1356 struct TileAnimationParams anim;
1357 anim.type = TAT_NONE;
1358 if (!lua_istable(L, index))
1361 anim.type = (TileAnimationType)
1362 getenumfield(L, index, "type", es_TileAnimationType,
1364 if (anim.type == TAT_VERTICAL_FRAMES) {
1365 // {type="vertical_frames", aspect_w=16, aspect_h=16, length=2.0}
1366 anim.vertical_frames.aspect_w =
1367 getintfield_default(L, index, "aspect_w", 16);
1368 anim.vertical_frames.aspect_h =
1369 getintfield_default(L, index, "aspect_h", 16);
1370 anim.vertical_frames.length =
1371 getfloatfield_default(L, index, "length", 1.0);
1372 } else if (anim.type == TAT_SHEET_2D) {
1373 // {type="sheet_2d", frames_w=5, frames_h=3, frame_length=0.5}
1374 getintfield(L, index, "frames_w",
1375 anim.sheet_2d.frames_w);
1376 getintfield(L, index, "frames_h",
1377 anim.sheet_2d.frames_h);
1378 getfloatfield(L, index, "frame_length",
1379 anim.sheet_2d.frame_length);
1385 /******************************************************************************/
1386 ToolCapabilities read_tool_capabilities(
1387 lua_State *L, int table)
1389 ToolCapabilities toolcap;
1390 getfloatfield(L, table, "full_punch_interval", toolcap.full_punch_interval);
1391 getintfield(L, table, "max_drop_level", toolcap.max_drop_level);
1392 getintfield(L, table, "punch_attack_uses", toolcap.punch_attack_uses);
1393 lua_getfield(L, table, "groupcaps");
1394 if(lua_istable(L, -1)){
1395 int table_groupcaps = lua_gettop(L);
1397 while(lua_next(L, table_groupcaps) != 0){
1398 // key at index -2 and value at index -1
1399 std::string groupname = luaL_checkstring(L, -2);
1400 if(lua_istable(L, -1)){
1401 int table_groupcap = lua_gettop(L);
1402 // This will be created
1403 ToolGroupCap groupcap;
1404 // Read simple parameters
1405 getintfield(L, table_groupcap, "maxlevel", groupcap.maxlevel);
1406 getintfield(L, table_groupcap, "uses", groupcap.uses);
1407 // DEPRECATED: maxwear
1409 if (getfloatfield(L, table_groupcap, "maxwear", maxwear)){
1411 groupcap.uses = 1.0/maxwear;
1414 warningstream << "Field \"maxwear\" is deprecated; "
1415 << "replace with uses=1/maxwear" << std::endl;
1416 infostream << script_get_backtrace(L) << std::endl;
1418 // Read "times" table
1419 lua_getfield(L, table_groupcap, "times");
1420 if(lua_istable(L, -1)){
1421 int table_times = lua_gettop(L);
1423 while(lua_next(L, table_times) != 0){
1424 // key at index -2 and value at index -1
1425 int rating = luaL_checkinteger(L, -2);
1426 float time = luaL_checknumber(L, -1);
1427 groupcap.times[rating] = time;
1428 // removes value, keeps key for next iteration
1433 // Insert groupcap into toolcap
1434 toolcap.groupcaps[groupname] = groupcap;
1436 // removes value, keeps key for next iteration
1442 lua_getfield(L, table, "damage_groups");
1443 if(lua_istable(L, -1)){
1444 int table_damage_groups = lua_gettop(L);
1446 while(lua_next(L, table_damage_groups) != 0){
1447 // key at index -2 and value at index -1
1448 std::string groupname = luaL_checkstring(L, -2);
1449 u16 value = luaL_checkinteger(L, -1);
1450 toolcap.damageGroups[groupname] = value;
1451 // removes value, keeps key for next iteration
1459 /******************************************************************************/
1460 void push_dig_params(lua_State *L,const DigParams ¶ms)
1462 lua_createtable(L, 0, 3);
1463 setboolfield(L, -1, "diggable", params.diggable);
1464 setfloatfield(L, -1, "time", params.time);
1465 setintfield(L, -1, "wear", params.wear);
1468 /******************************************************************************/
1469 void push_hit_params(lua_State *L,const HitParams ¶ms)
1471 lua_createtable(L, 0, 3);
1472 setintfield(L, -1, "hp", params.hp);
1473 setintfield(L, -1, "wear", params.wear);
1476 /******************************************************************************/
1478 bool getflagsfield(lua_State *L, int table, const char *fieldname,
1479 FlagDesc *flagdesc, u32 *flags, u32 *flagmask)
1481 lua_getfield(L, table, fieldname);
1483 bool success = read_flags(L, -1, flagdesc, flags, flagmask);
1490 bool read_flags(lua_State *L, int index, FlagDesc *flagdesc,
1491 u32 *flags, u32 *flagmask)
1493 if (lua_isstring(L, index)) {
1494 std::string flagstr = lua_tostring(L, index);
1495 *flags = readFlagString(flagstr, flagdesc, flagmask);
1496 } else if (lua_istable(L, index)) {
1497 *flags = read_flags_table(L, index, flagdesc, flagmask);
1505 u32 read_flags_table(lua_State *L, int table, FlagDesc *flagdesc, u32 *flagmask)
1507 u32 flags = 0, mask = 0;
1508 char fnamebuf[64] = "no";
1510 for (int i = 0; flagdesc[i].name; i++) {
1513 if (getboolfield(L, table, flagdesc[i].name, result)) {
1514 mask |= flagdesc[i].flag;
1516 flags |= flagdesc[i].flag;
1519 strlcpy(fnamebuf + 2, flagdesc[i].name, sizeof(fnamebuf) - 2);
1520 if (getboolfield(L, table, fnamebuf, result))
1521 mask |= flagdesc[i].flag;
1530 void push_flags_string(lua_State *L, FlagDesc *flagdesc, u32 flags, u32 flagmask)
1532 std::string flagstring = writeFlagString(flags, flagdesc, flagmask);
1533 lua_pushlstring(L, flagstring.c_str(), flagstring.size());
1536 /******************************************************************************/
1537 /* Lua Stored data! */
1538 /******************************************************************************/
1540 /******************************************************************************/
1541 void read_groups(lua_State *L, int index, ItemGroupList &result)
1543 if (lua_isnil(L, index))
1546 luaL_checktype(L, index, LUA_TTABLE);
1552 while (lua_next(L, index) != 0) {
1553 // key at index -2 and value at index -1
1554 std::string name = luaL_checkstring(L, -2);
1555 int rating = luaL_checkinteger(L, -1);
1556 // zero rating indicates not in the group
1558 result[name] = rating;
1559 // removes value, keeps key for next iteration
1564 /******************************************************************************/
1565 void push_groups(lua_State *L, const ItemGroupList &groups)
1567 lua_createtable(L, 0, groups.size());
1568 for (const auto &group : groups) {
1569 lua_pushinteger(L, group.second);
1570 lua_setfield(L, -2, group.first.c_str());
1574 /******************************************************************************/
1575 void push_items(lua_State *L, const std::vector<ItemStack> &items)
1577 lua_createtable(L, items.size(), 0);
1578 for (u32 i = 0; i != items.size(); i++) {
1579 LuaItemStack::create(L, items[i]);
1580 lua_rawseti(L, -2, i + 1);
1584 /******************************************************************************/
1585 std::vector<ItemStack> read_items(lua_State *L, int index, Server *srv)
1588 index = lua_gettop(L) + 1 + index;
1590 std::vector<ItemStack> items;
1591 luaL_checktype(L, index, LUA_TTABLE);
1593 while (lua_next(L, index)) {
1594 s32 key = luaL_checkinteger(L, -2);
1596 throw LuaError("Invalid inventory list index");
1598 if (items.size() < (u32) key) {
1601 items[key - 1] = read_item(L, -1, srv->idef());
1607 /******************************************************************************/
1608 void luaentity_get(lua_State *L, u16 id)
1610 // Get luaentities[i]
1611 lua_getglobal(L, "core");
1612 lua_getfield(L, -1, "luaentities");
1613 luaL_checktype(L, -1, LUA_TTABLE);
1614 lua_pushinteger(L, id);
1615 lua_gettable(L, -2);
1616 lua_remove(L, -2); // Remove luaentities
1617 lua_remove(L, -2); // Remove core
1620 /******************************************************************************/
1621 bool read_noiseparams(lua_State *L, int index, NoiseParams *np)
1624 index = lua_gettop(L) + 1 + index;
1626 if (!lua_istable(L, index))
1629 getfloatfield(L, index, "offset", np->offset);
1630 getfloatfield(L, index, "scale", np->scale);
1631 getfloatfield(L, index, "persist", np->persist);
1632 getfloatfield(L, index, "persistence", np->persist);
1633 getfloatfield(L, index, "lacunarity", np->lacunarity);
1634 getintfield(L, index, "seed", np->seed);
1635 getintfield(L, index, "octaves", np->octaves);
1639 np->flags = getflagsfield(L, index, "flags", flagdesc_noiseparams,
1640 &flags, &flagmask) ? flags : NOISE_FLAG_DEFAULTS;
1642 lua_getfield(L, index, "spread");
1643 np->spread = read_v3f(L, -1);
1649 void push_noiseparams(lua_State *L, NoiseParams *np)
1652 push_float_string(L, np->offset);
1653 lua_setfield(L, -2, "offset");
1654 push_float_string(L, np->scale);
1655 lua_setfield(L, -2, "scale");
1656 push_float_string(L, np->persist);
1657 lua_setfield(L, -2, "persistence");
1658 push_float_string(L, np->lacunarity);
1659 lua_setfield(L, -2, "lacunarity");
1660 lua_pushnumber(L, np->seed);
1661 lua_setfield(L, -2, "seed");
1662 lua_pushnumber(L, np->octaves);
1663 lua_setfield(L, -2, "octaves");
1665 push_flags_string(L, flagdesc_noiseparams, np->flags,
1667 lua_setfield(L, -2, "flags");
1669 push_v3_float_string(L, np->spread);
1670 lua_setfield(L, -2, "spread");
1673 /******************************************************************************/
1674 // Returns depth of json value tree
1675 static int push_json_value_getdepth(const Json::Value &value)
1677 if (!value.isArray() && !value.isObject())
1681 for (const auto &it : value) {
1682 int elemdepth = push_json_value_getdepth(it);
1683 if (elemdepth > maxdepth)
1684 maxdepth = elemdepth;
1686 return maxdepth + 1;
1688 // Recursive function to convert JSON --> Lua table
1689 static bool push_json_value_helper(lua_State *L, const Json::Value &value,
1692 switch(value.type()) {
1693 case Json::nullValue:
1695 lua_pushvalue(L, nullindex);
1697 case Json::intValue:
1698 lua_pushinteger(L, value.asLargestInt());
1700 case Json::uintValue:
1701 lua_pushinteger(L, value.asLargestUInt());
1703 case Json::realValue:
1704 lua_pushnumber(L, value.asDouble());
1706 case Json::stringValue:
1708 const char *str = value.asCString();
1709 lua_pushstring(L, str ? str : "");
1712 case Json::booleanValue:
1713 lua_pushboolean(L, value.asInt());
1715 case Json::arrayValue:
1716 lua_createtable(L, value.size(), 0);
1717 for (Json::Value::const_iterator it = value.begin();
1718 it != value.end(); ++it) {
1719 push_json_value_helper(L, *it, nullindex);
1720 lua_rawseti(L, -2, it.index() + 1);
1723 case Json::objectValue:
1724 lua_createtable(L, 0, value.size());
1725 for (Json::Value::const_iterator it = value.begin();
1726 it != value.end(); ++it) {
1727 #if !defined(JSONCPP_STRING) && (JSONCPP_VERSION_MAJOR < 1 || JSONCPP_VERSION_MINOR < 9)
1728 const char *str = it.memberName();
1729 lua_pushstring(L, str ? str : "");
1731 std::string str = it.name();
1732 lua_pushstring(L, str.c_str());
1734 push_json_value_helper(L, *it, nullindex);
1741 // converts JSON --> Lua table; returns false if lua stack limit exceeded
1742 // nullindex: Lua stack index of value to use in place of JSON null
1743 bool push_json_value(lua_State *L, const Json::Value &value, int nullindex)
1746 nullindex = lua_gettop(L) + 1 + nullindex;
1748 int depth = push_json_value_getdepth(value);
1750 // The maximum number of Lua stack slots used at each recursion level
1751 // of push_json_value_helper is 2, so make sure there a depth * 2 slots
1752 if (lua_checkstack(L, depth * 2))
1753 return push_json_value_helper(L, value, nullindex);
1758 // Converts Lua table --> JSON
1759 void read_json_value(lua_State *L, Json::Value &root, int index, u8 recursion)
1761 if (recursion > 16) {
1762 throw SerializationError("Maximum recursion depth exceeded");
1764 int type = lua_type(L, index);
1765 if (type == LUA_TBOOLEAN) {
1766 root = (bool) lua_toboolean(L, index);
1767 } else if (type == LUA_TNUMBER) {
1768 root = lua_tonumber(L, index);
1769 } else if (type == LUA_TSTRING) {
1771 const char *str = lua_tolstring(L, index, &len);
1772 root = std::string(str, len);
1773 } else if (type == LUA_TTABLE) {
1775 while (lua_next(L, index)) {
1776 // Key is at -2 and value is at -1
1778 read_json_value(L, value, lua_gettop(L), recursion + 1);
1780 Json::ValueType roottype = root.type();
1781 int keytype = lua_type(L, -1);
1782 if (keytype == LUA_TNUMBER) {
1783 lua_Number key = lua_tonumber(L, -1);
1784 if (roottype != Json::nullValue && roottype != Json::arrayValue) {
1785 throw SerializationError("Can't mix array and object values in JSON");
1786 } else if (key < 1) {
1787 throw SerializationError("Can't use zero-based or negative indexes in JSON");
1788 } else if (floor(key) != key) {
1789 throw SerializationError("Can't use indexes with a fractional part in JSON");
1791 root[(Json::ArrayIndex) key - 1] = value;
1792 } else if (keytype == LUA_TSTRING) {
1793 if (roottype != Json::nullValue && roottype != Json::objectValue) {
1794 throw SerializationError("Can't mix array and object values in JSON");
1796 root[lua_tostring(L, -1)] = value;
1798 throw SerializationError("Lua key to convert to JSON is not a string or number");
1801 } else if (type == LUA_TNIL) {
1802 root = Json::nullValue;
1804 throw SerializationError("Can only store booleans, numbers, strings, objects, arrays, and null in JSON");
1806 lua_pop(L, 1); // Pop value
1809 void push_pointed_thing(lua_State *L, const PointedThing &pointed, bool csm,
1813 if (pointed.type == POINTEDTHING_NODE) {
1814 lua_pushstring(L, "node");
1815 lua_setfield(L, -2, "type");
1816 push_v3s16(L, pointed.node_undersurface);
1817 lua_setfield(L, -2, "under");
1818 push_v3s16(L, pointed.node_abovesurface);
1819 lua_setfield(L, -2, "above");
1820 } else if (pointed.type == POINTEDTHING_OBJECT) {
1821 lua_pushstring(L, "object");
1822 lua_setfield(L, -2, "type");
1825 lua_pushinteger(L, pointed.object_id);
1826 lua_setfield(L, -2, "id");
1828 push_objectRef(L, pointed.object_id);
1829 lua_setfield(L, -2, "ref");
1832 lua_pushstring(L, "nothing");
1833 lua_setfield(L, -2, "type");
1835 if (hitpoint && (pointed.type != POINTEDTHING_NOTHING)) {
1836 push_v3f(L, pointed.intersection_point / BS); // convert to node coords
1837 lua_setfield(L, -2, "intersection_point");
1838 push_v3s16(L, pointed.intersection_normal);
1839 lua_setfield(L, -2, "intersection_normal");
1840 lua_pushinteger(L, pointed.box_id + 1); // change to Lua array index
1841 lua_setfield(L, -2, "box_id");
1845 void push_objectRef(lua_State *L, const u16 id)
1847 // Get core.object_refs[i]
1848 lua_getglobal(L, "core");
1849 lua_getfield(L, -1, "object_refs");
1850 luaL_checktype(L, -1, LUA_TTABLE);
1851 lua_pushinteger(L, id);
1852 lua_gettable(L, -2);
1853 lua_remove(L, -2); // object_refs
1854 lua_remove(L, -2); // core
1857 void read_hud_element(lua_State *L, HudElement *elem)
1859 elem->type = (HudElementType)getenumfield(L, 2, "hud_elem_type",
1860 es_HudElementType, HUD_ELEM_TEXT);
1862 lua_getfield(L, 2, "position");
1863 elem->pos = lua_istable(L, -1) ? read_v2f(L, -1) : v2f();
1866 lua_getfield(L, 2, "scale");
1867 elem->scale = lua_istable(L, -1) ? read_v2f(L, -1) : v2f();
1870 lua_getfield(L, 2, "size");
1871 elem->size = lua_istable(L, -1) ? read_v2s32(L, -1) : v2s32();
1874 elem->name = getstringfield_default(L, 2, "name", "");
1875 elem->text = getstringfield_default(L, 2, "text", "");
1876 elem->number = getintfield_default(L, 2, "number", 0);
1877 if (elem->type == HUD_ELEM_WAYPOINT)
1878 // waypoints reuse the item field to store precision, item = precision + 1
1879 elem->item = getintfield_default(L, 2, "precision", -1) + 1;
1881 elem->item = getintfield_default(L, 2, "item", 0);
1882 elem->dir = getintfield_default(L, 2, "direction", 0);
1883 elem->z_index = MYMAX(S16_MIN, MYMIN(S16_MAX,
1884 getintfield_default(L, 2, "z_index", 0)));
1885 elem->text2 = getstringfield_default(L, 2, "text2", "");
1887 // Deprecated, only for compatibility's sake
1889 elem->dir = getintfield_default(L, 2, "dir", 0);
1891 lua_getfield(L, 2, "alignment");
1892 elem->align = lua_istable(L, -1) ? read_v2f(L, -1) : v2f();
1895 lua_getfield(L, 2, "offset");
1896 elem->offset = lua_istable(L, -1) ? read_v2f(L, -1) : v2f();
1899 lua_getfield(L, 2, "world_pos");
1900 elem->world_pos = lua_istable(L, -1) ? read_v3f(L, -1) : v3f();
1903 /* check for known deprecated element usage */
1904 if ((elem->type == HUD_ELEM_STATBAR) && (elem->size == v2s32()))
1905 log_deprecated(L,"Deprecated usage of statbar without size!");
1908 void push_hud_element(lua_State *L, HudElement *elem)
1912 lua_pushstring(L, es_HudElementType[(u8)elem->type].str);
1913 lua_setfield(L, -2, "type");
1915 push_v2f(L, elem->pos);
1916 lua_setfield(L, -2, "position");
1918 lua_pushstring(L, elem->name.c_str());
1919 lua_setfield(L, -2, "name");
1921 push_v2f(L, elem->scale);
1922 lua_setfield(L, -2, "scale");
1924 lua_pushstring(L, elem->text.c_str());
1925 lua_setfield(L, -2, "text");
1927 lua_pushnumber(L, elem->number);
1928 lua_setfield(L, -2, "number");
1930 lua_pushnumber(L, elem->item);
1931 lua_setfield(L, -2, "item");
1933 lua_pushnumber(L, elem->dir);
1934 lua_setfield(L, -2, "direction");
1936 push_v2f(L, elem->offset);
1937 lua_setfield(L, -2, "offset");
1939 push_v2f(L, elem->align);
1940 lua_setfield(L, -2, "alignment");
1942 push_v2s32(L, elem->size);
1943 lua_setfield(L, -2, "size");
1945 // Deprecated, only for compatibility's sake
1946 lua_pushnumber(L, elem->dir);
1947 lua_setfield(L, -2, "dir");
1949 push_v3f(L, elem->world_pos);
1950 lua_setfield(L, -2, "world_pos");
1952 lua_pushnumber(L, elem->z_index);
1953 lua_setfield(L, -2, "z_index");
1955 lua_pushstring(L, elem->text2.c_str());
1956 lua_setfield(L, -2, "text2");
1959 HudElementStat read_hud_change(lua_State *L, HudElement *elem, void **value)
1961 HudElementStat stat = HUD_STAT_NUMBER;
1962 std::string statstr;
1963 if (lua_isstring(L, 3)) {
1965 statstr = lua_tostring(L, 3);
1966 stat = string_to_enum(es_HudElementStat, statint, statstr) ?
1967 (HudElementStat)statint : stat;
1972 elem->pos = read_v2f(L, 4);
1973 *value = &elem->pos;
1976 elem->name = luaL_checkstring(L, 4);
1977 *value = &elem->name;
1979 case HUD_STAT_SCALE:
1980 elem->scale = read_v2f(L, 4);
1981 *value = &elem->scale;
1984 elem->text = luaL_checkstring(L, 4);
1985 *value = &elem->text;
1987 case HUD_STAT_NUMBER:
1988 elem->number = luaL_checknumber(L, 4);
1989 *value = &elem->number;
1992 elem->item = luaL_checknumber(L, 4);
1993 if (elem->type == HUD_ELEM_WAYPOINT && statstr == "precision")
1995 *value = &elem->item;
1998 elem->dir = luaL_checknumber(L, 4);
1999 *value = &elem->dir;
2001 case HUD_STAT_ALIGN:
2002 elem->align = read_v2f(L, 4);
2003 *value = &elem->align;
2005 case HUD_STAT_OFFSET:
2006 elem->offset = read_v2f(L, 4);
2007 *value = &elem->offset;
2009 case HUD_STAT_WORLD_POS:
2010 elem->world_pos = read_v3f(L, 4);
2011 *value = &elem->world_pos;
2014 elem->size = read_v2s32(L, 4);
2015 *value = &elem->size;
2017 case HUD_STAT_Z_INDEX:
2018 elem->z_index = MYMAX(S16_MIN, MYMIN(S16_MAX, luaL_checknumber(L, 4)));
2019 *value = &elem->z_index;
2021 case HUD_STAT_TEXT2:
2022 elem->text2 = luaL_checkstring(L, 4);
2023 *value = &elem->text2;
2029 /******************************************************************************/
2031 // Indices must match values in `enum CollisionType` exactly!!
2032 static const char *collision_type_str[] = {
2037 // Indices must match values in `enum CollisionAxis` exactly!!
2038 static const char *collision_axis_str[] = {
2044 void push_collision_move_result(lua_State *L, const collisionMoveResult &res)
2046 lua_createtable(L, 0, 4);
2048 setboolfield(L, -1, "touching_ground", res.touching_ground);
2049 setboolfield(L, -1, "collides", res.collides);
2050 setboolfield(L, -1, "standing_on_object", res.standing_on_object);
2053 lua_createtable(L, res.collisions.size(), 0);
2055 for (const auto &c : res.collisions) {
2056 lua_createtable(L, 0, 5);
2058 lua_pushstring(L, collision_type_str[c.type]);
2059 lua_setfield(L, -2, "type");
2061 assert(c.axis != COLLISION_AXIS_NONE);
2062 lua_pushstring(L, collision_axis_str[c.axis]);
2063 lua_setfield(L, -2, "axis");
2065 if (c.type == COLLISION_NODE) {
2066 push_v3s16(L, c.node_p);
2067 lua_setfield(L, -2, "node_pos");
2068 } else if (c.type == COLLISION_OBJECT) {
2069 push_objectRef(L, c.object->getId());
2070 lua_setfield(L, -2, "object");
2073 push_v3f(L, c.old_speed / BS);
2074 lua_setfield(L, -2, "old_velocity");
2076 push_v3f(L, c.new_speed / BS);
2077 lua_setfield(L, -2, "new_velocity");
2079 lua_rawseti(L, -2, i++);
2081 lua_setfield(L, -2, "collisions");