src/script/lua_api/l_clientobject.cpp

   1 /*
   2 Dragonfire
   3 Copyright (C) 2020 system32
   4
   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.
   9
  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.
  14
  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.
  18 */
  19
  20 #include "lua_api/l_clientobject.h"
  21 #include "l_internal.h"
  22 #include "common/c_converter.h"
  23 #include "client/client.h"
  24 #include "object_properties.h"
  25 #include "util/pointedthing.h"
  26
  27 ClientObjectRef *ClientObjectRef::checkobject(lua_State *L, int narg)
  28 {
  29         luaL_checktype(L, narg, LUA_TUSERDATA);
  30         void *userdata = luaL_checkudata(L, narg, className);
  31         if (!userdata)
  32                 luaL_typerror(L, narg, className);
  33         return *(ClientObjectRef **)userdata;
  34 }
  35
  36 ClientActiveObject *ClientObjectRef::get_cao(ClientObjectRef *ref)
  37 {
  38         ClientActiveObject *obj = ref->m_object;
  39         return obj;
  40 }
  41
  42 GenericCAO *ClientObjectRef::get_generic_cao(ClientObjectRef *ref, lua_State *L)
  43 {
  44         ClientActiveObject *obj = get_cao(ref);
  45         ClientEnvironment &env = getClient(L)->getEnv();
  46         GenericCAO *gcao = env.getGenericCAO(obj->getId());
  47         return gcao;
  48 }
  49
  50 int ClientObjectRef::l_get_pos(lua_State *L)
  51 {
  52         ClientObjectRef *ref = checkobject(L, 1);
  53         ClientActiveObject *cao = get_cao(ref);
  54         push_v3f(L, cao->getPosition() / BS);
  55         return 1;
  56 }
  57
  58 int ClientObjectRef::l_get_velocity(lua_State *L)
  59 {
  60         ClientObjectRef *ref = checkobject(L, 1);
  61         GenericCAO *gcao = get_generic_cao(ref, L);
  62         push_v3f(L, gcao->getVelocity() / BS);
  63         return 1;
  64 }
  65
  66 int ClientObjectRef::l_get_acceleration(lua_State *L)
  67 {
  68         ClientObjectRef *ref = checkobject(L, 1);
  69         GenericCAO *gcao = get_generic_cao(ref, L);
  70         push_v3f(L, gcao->getAcceleration() / BS);
  71         return 1;
  72 }
  73
  74 int ClientObjectRef::l_get_rotation(lua_State *L)
  75 {
  76         ClientObjectRef *ref = checkobject(L, 1);
  77         GenericCAO *gcao = get_generic_cao(ref, L);
  78         push_v3f(L, gcao->getRotation());
  79         return 1;
  80 }
  81
  82 int ClientObjectRef::l_is_player(lua_State *L)
  83 {
  84         ClientObjectRef *ref = checkobject(L, 1);
  85         GenericCAO *gcao = get_generic_cao(ref, L);
  86         lua_pushboolean(L, gcao->isPlayer());
  87         return 1;
  88 }
  89
  90 int ClientObjectRef::l_get_name(lua_State *L)
  91 {
  92         ClientObjectRef *ref = checkobject(L, 1);
  93         GenericCAO *gcao = get_generic_cao(ref, L);
  94         lua_pushstring(L, gcao->getName().c_str());
  95         return 1;
  96 }
  97
  98 int ClientObjectRef::l_get_attach(lua_State *L)
  99 {
 100         ClientObjectRef *ref = checkobject(L, 1);
 101         GenericCAO *gcao = get_generic_cao(ref, L);
 102         create(L, gcao->getParent());
 103         return 1;
 104 }
 105
 106 int ClientObjectRef::l_get_nametag(lua_State *L)
 107 {
 108         ClientObjectRef *ref = checkobject(L, 1);
 109         GenericCAO *gcao = get_generic_cao(ref, L);
 110         ObjectProperties *props = gcao->getProperties();
 111         lua_pushstring(L, props->nametag.c_str());
 112         return 1;
 113 }
 114
 115 int ClientObjectRef::l_get_item_textures(lua_State *L)
 116 {
 117         ClientObjectRef *ref = checkobject(L, 1);
 118         GenericCAO *gcao = get_generic_cao(ref, L);
 119         ObjectProperties *props = gcao->getProperties();
 120         lua_newtable(L);
 121
 122         for (std::string &texture : props->textures) {
 123                 lua_pushstring(L, texture.c_str());
 124         }
 125         return 1;
 126 }
 127
 128 int ClientObjectRef::l_get_max_hp(lua_State *L)
 129 {
 130         ClientObjectRef *ref = checkobject(L, 1);
 131         GenericCAO *gcao = get_generic_cao(ref, L);
 132         ObjectProperties *props = gcao->getProperties();
 133         lua_pushnumber(L, props->hp_max);
 134         return 1;
 135 }
 136
 137 int ClientObjectRef::l_punch(lua_State *L)
 138 {
 139         ClientObjectRef *ref = checkobject(L, 1);
 140         GenericCAO *gcao = get_generic_cao(ref, L);
 141         PointedThing pointed(gcao->getId(), v3f(0,0,0), v3s16(0,0,0), 0);
 142         getClient(L)->interact(INTERACT_START_DIGGING, pointed);
 143         return 0;
 144 }
 145
 146 int ClientObjectRef::l_rightclick(lua_State *L)
 147 {
 148         ClientObjectRef *ref = checkobject(L, 1);
 149         GenericCAO *gcao = get_generic_cao(ref, L);
 150         PointedThing pointed(gcao->getId(), v3f(0,0,0), v3s16(0,0,0), 0);
 151         getClient(L)->interact(INTERACT_PLACE, pointed);
 152         return 0;
 153 }
 154
 155 ClientObjectRef::ClientObjectRef(ClientActiveObject *object) : m_object(object)
 156 {
 157 }
 158
 159 void ClientObjectRef::create(lua_State *L, ClientActiveObject *object)
 160 {
 161         if (object) {
 162                 ClientObjectRef *o = new ClientObjectRef(object);
 163                 *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
 164                 luaL_getmetatable(L, className);
 165                 lua_setmetatable(L, -2);
 166         }
 167 }
 168
 169 void ClientObjectRef::create(lua_State *L, s16 id)
 170 {
 171         create(L, ((ClientEnvironment *)getEnv(L))->getActiveObject(id));
 172 }
 173
 174 int ClientObjectRef::gc_object(lua_State *L)
 175 {
 176         ClientObjectRef *obj = *(ClientObjectRef **)(lua_touserdata(L, 1));
 177         delete obj;
 178         return 0;
 179 }
 180
 181 // taken from LuaLocalPlayer
 182 void ClientObjectRef::Register(lua_State *L)
 183 {
 184         lua_newtable(L);
 185         int methodtable = lua_gettop(L);
 186         luaL_newmetatable(L, className);
 187         int metatable = lua_gettop(L);
 188
 189         lua_pushliteral(L, "__metatable");
 190         lua_pushvalue(L, methodtable);
 191         lua_settable(L, metatable); // hide metatable from lua getmetatable()
 192
 193         lua_pushliteral(L, "__index");
 194         lua_pushvalue(L, methodtable);
 195         lua_settable(L, metatable);
 196
 197         lua_pushliteral(L, "__gc");
 198         lua_pushcfunction(L, gc_object);
 199         lua_settable(L, metatable);
 200
 201         lua_pop(L, 1); // Drop metatable
 202
 203         luaL_openlib(L, 0, methods, 0); // fill methodtable
 204         lua_pop(L, 1);                  // Drop methodtable
 205 }
 206
 207 const char ClientObjectRef::className[] = "ClientObjectRef";
 208 luaL_Reg ClientObjectRef::methods[] = {luamethod(ClientObjectRef, get_pos),
 209                 luamethod(ClientObjectRef, get_velocity),
 210                 luamethod(ClientObjectRef, get_acceleration),
 211                 luamethod(ClientObjectRef, get_rotation),
 212                 luamethod(ClientObjectRef, is_player),
 213                 luamethod(ClientObjectRef, get_name),
 214                 luamethod(ClientObjectRef, get_attach),
 215                 luamethod(ClientObjectRef, get_nametag),
 216                 luamethod(ClientObjectRef, get_item_textures),
 217                 luamethod(ClientObjectRef, get_max_hp),
 218                 luamethod(ClientObjectRef, punch),
 219                 luamethod(ClientObjectRef, rightclick), {0, 0}};