src/script/common/c_content.cpp


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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "common/c_content.h"
#include "common/c_converter.h"
#include "common/c_types.h"
#include "nodedef.h"
#include "object_properties.h"
#include "cpp_api/s_node.h"
#include "lua_api/l_object.h"
#include "lua_api/l_item.h"
#include "common/c_internal.h"
#include "server.h"
#include "log.h"
#include "tool.h"
#include "serverobject.h"
#include "porting.h"
#include "mg_schematic.h"
#include "noise.h"
#include "util/pointedthing.h"
#include "debug.h" // For FATAL_ERROR
#include <json/json.h>

struct EnumString es_TileAnimationType[] =
{
	{TAT_NONE, "none"},
	{TAT_VERTICAL_FRAMES, "vertical_frames"},
	{TAT_SHEET_2D, "sheet_2d"},
	{0, NULL},
};

/******************************************************************************/
void read_item_definition(lua_State* L, int index,
		const ItemDefinition &default_def, ItemDefinition &def)
{
	if (index < 0)
		index = lua_gettop(L) + 1 + index;

	def.type = (ItemType)getenumfield(L, index, "type",
			es_ItemType, ITEM_NONE);
	getstringfield(L, index, "name", def.name);
	getstringfield(L, index, "description", def.description);
	getstringfield(L, index, "inventory_image", def.inventory_image);
	getstringfield(L, index, "inventory_overlay", def.inventory_overlay);
	getstringfield(L, index, "wield_image", def.wield_image);
	getstringfield(L, index, "wield_overlay", def.wield_overlay);
	getstringfield(L, index, "palette", def.palette_image);

	// Read item color.
	lua_getfield(L, index, "color");
	read_color(L, -1, &def.color);
	lua_pop(L, 1);

	lua_getfield(L, index, "wield_scale");
	if(lua_istable(L, -1)){
		def.wield_scale = check_v3f(L, -1);
	}
	lua_pop(L, 1);

	int stack_max = getintfield_default(L, index, "stack_max", def.stack_max);
	def.stack_max = rangelim(stack_max, 1, U16_MAX);

	lua_getfield(L, index, "on_use");
	def.usable = lua_isfunction(L, -1);
	lua_pop(L, 1);

	getboolfield(L, index, "liquids_pointable", def.liquids_pointable);

	warn_if_field_exists(L, index, "tool_digging_properties",
			"Deprecated; use tool_capabilities");

	lua_getfield(L, index, "tool_capabilities");
	if(lua_istable(L, -1)){
		def.tool_capabilities = new ToolCapabilities(
				read_tool_capabilities(L, -1));
	}

	// If name is "" (hand), ensure there are ToolCapabilities
	// because it will be looked up there whenever any other item has
	// no ToolCapabilities
	if (def.name.empty() && def.tool_capabilities == NULL){
		def.tool_capabilities = new ToolCapabilities();
	}

	lua_getfield(L, index, "groups");
	read_groups(L, -1, def.groups);
	lua_pop(L, 1);

	lua_getfield(L, index, "sounds");
	if(lua_istable(L, -1)){
		lua_getfield(L, -1, "place");
		read_soundspec(L, -1, def.sound_place);
		lua_pop(L, 1);
		lua_getfield(L, -1, "place_failed");
		read_soundspec(L, -1, def.sound_place_failed);
		lua_pop(L, 1);
	}
	lua_pop(L, 1);

	def.range = getfloatfield_default(L, index, "range", def.range);

	// Client shall immediately place this node when player places the item.
	// Server will update the precise end result a moment later.
	// "" = no prediction
	getstringfield(L, index, "node_placement_prediction",
			def.node_placement_prediction);
}

/******************************************************************************/
void push_item_definition(lua_State *L, const ItemDefinition &i)
{
	lua_newtable(L);
	lua_pushstring(L, i.name.c_str());
	lua_setfield(L, -2, "name");
	lua_pushstring(L, i.description.c_str());
	lua_setfield(L, -2, "description");
}

void push_item_definition_full(lua_State *L, const ItemDefinition &i)
{
	std::string type(es_ItemType[(int)i.type].str);

	lua_newtable(L);
	lua_pushstring(L, i.name.c_str());
	lua_setfield(L, -2, "name");
	lua_pushstring(L, i.description.c_str());
	lua_setfield(L, -2, "description");
	lua_pushstring(L, type.c_str());
	lua_setfield(L, -2, "type");
	lua_pushstring(L, i.inventory_image.c_str());
	lua_setfield(L, -2, "inventory_image");
	lua_pushstring(L, i.inventory_overlay.c_str());
	lua_setfield(L, -2, "inventory_overlay");
	lua_pushstring(L, i.wield_image.c_str());
	lua_setfield(L, -2, "wield_image");
	lua_pushstring(L, i.wield_overlay.c_str());
	lua_setfield(L, -2, "wield_overlay");
	lua_pushstring(L, i.palette_image.c_str());
	lua_setfield(L, -2, "palette_image");
	push_ARGB8(L, i.color);
	lua_setfield(L, -2, "color");
	push_v3f(L, i.wield_scale);
	lua_setfield(L, -2, "wield_scale");
	lua_pushinteger(L, i.stack_max);
	lua_setfield(L, -2, "stack_max");
	lua_pushboolean(L, i.usable);
	lua_setfield(L, -2, "usable");
	lua_pushboolean(L, i.liquids_pointable);