minetest.git - modified minetest for gpcfs purposes

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Diffstat (limited to 'textures/base/pack/fast_btn.png')

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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 <stdio.h> #include <cstdarg> extern "C" { #include "lua.h" #include "lauxlib.h" } #include "cpp_api/s_base.h" #include "lua_api/l_object.h" #include "serverobject.h" ScriptApiBase::ScriptApiBase() : m_luastackmutex(), #ifdef LOCK_DEBUG m_locked(false), #endif m_luastack(0), m_server(0), m_environment(0) { } void ScriptApiBase::realityCheck() { int top = lua_gettop(m_luastack); if(top >= 30){ dstream<<"Stack is over 30:"<<std::endl; stackDump(dstream); scriptError("Stack is over 30 (reality check)"); } } void ScriptApiBase::scriptError(const char *fmt, ...) { va_list argp; va_start(argp, fmt); char buf[10000]; vsnprintf(buf, 10000, fmt, argp); va_end(argp); //errorstream<<"SCRIPT ERROR: "<<buf; throw LuaError(m_luastack, buf); } void ScriptApiBase::stackDump(std::ostream &o) { int i; int top = lua_gettop(m_luastack); for (i = 1; i <= top; i++) { /* repeat for each level */ int t = lua_type(m_luastack, i); switch (t) { case LUA_TSTRING: /* strings */ o<<"\""<<lua_tostring(m_luastack, i)<<"\""; break; case LUA_TBOOLEAN: /* booleans */ o<<(lua_toboolean(m_luastack, i) ? "true" : "false"); break; case LUA_TNUMBER: /* numbers */ { char buf[10]; snprintf(buf, 10, "%g", lua_tonumber(m_luastack, i)); o<<buf; break; } default: /* other values */ o<<lua_typename(m_luastack, t); break; } o<<" "; } o<<std::endl; } // Push the list of callbacks (a lua table). // Then push nargs arguments. // Then call this function, which // - runs the callbacks // - removes the table and arguments from the lua stack // - pushes the return value, computed depending on mode void ScriptApiBase::runCallbacks(int nargs,RunCallbacksMode mode) { lua_State *L = getStack(); // Insert the return value into the lua stack, below the table assert(lua_gettop(L) >= nargs + 1); lua_pushnil(L); lua_insert(L, -(nargs + 1) - 1); // Stack now looks like this: // ... <return value = nil> <table> <arg#1> <arg#2> ... <arg#n> int rv = lua_gettop(L) - nargs - 1; int table = rv + 1; int arg = table + 1; luaL_checktype(L, table, LUA_TTABLE); // Foreach lua_pushnil(L); bool first_loop = true; while(lua_next(L, table) != 0){ // key at index -2 and value at index -1 luaL_checktype(L, -1, LUA_TFUNCTION); // Call function for(int i = 0; i < nargs; i++) lua_pushvalue(L, arg+i); if(lua_pcall(L, nargs, 1, 0)) scriptError("error: %s", lua_tostring(L, -1)); // Move return value to designated space in stack // Or pop it if(first_loop){ // Result of first callback is always moved lua_replace(L, rv); first_loop = false; } else { // Otherwise, what happens depends on the mode if(mode == RUN_CALLBACKS_MODE_FIRST) lua_pop(L, 1); else if(mode == RUN_CALLBACKS_MODE_LAST) lua_replace(L, rv); else if(mode == RUN_CALLBACKS_MODE_AND || mode == RUN_CALLBACKS_MODE_AND_SC){ if((bool)lua_toboolean(L, rv) == true && (bool)lua_toboolean(L, -1) == false) lua_replace(L, rv); else lua_pop(L, 1); } else if(mode == RUN_CALLBACKS_MODE_OR || mode == RUN_CALLBACKS_MODE_OR_SC){ if((bool)lua_toboolean(L, rv) == false && (bool)lua_toboolean(L, -1) == true) lua_replace(L, rv); else lua_pop(L, 1); } else assert(0); } // Handle short circuit modes if(mode == RUN_CALLBACKS_MODE_AND_SC && (bool)lua_toboolean(L, rv) == false) break; else if(mode == RUN_CALLBACKS_MODE_OR_SC && (bool)lua_toboolean(L, rv) == true) break; // value removed, keep key for next iteration } // Remove stuff from stack, leaving only the return value lua_settop(L, rv); // Fix return value in case no callbacks were called if(first_loop){ if(mode == RUN_CALLBACKS_MODE_AND || mode == RUN_CALLBACKS_MODE_AND_SC){ lua_pop(L, 1); lua_pushboolean(L, true); } else if(mode == RUN_CALLBACKS_MODE_OR || mode == RUN_CALLBACKS_MODE_OR_SC){ lua_pop(L, 1); lua_pushboolean(L, false); } } } void ScriptApiBase::addObjectReference(ServerActiveObject *cobj) { SCRIPTAPI_PRECHECKHEADER //infostream<<"scriptapi_add_object_reference: id="<<cobj->getId()<<std::endl; // Create object on stack ObjectRef::create(L, cobj); // Puts ObjectRef (as userdata) on stack int object = lua_gettop(L); // Get minetest.object_refs table lua_getglobal(L, "minetest"); lua_getfield(L, -1, "object_refs"); luaL_checktype(L, -1, LUA_TTABLE); int objectstable = lua_gettop(L); // object_refs[id] = object lua_pushnumber(L, cobj->getId()); // Push id lua_pushvalue(L, object); // Copy object to top of stack lua_settable(L, objectstable); } void ScriptApiBase::removeObjectReference(ServerActiveObject *cobj) { SCRIPTAPI_PRECHECKHEADER //infostream<<"scriptapi_rm_object_reference: id="<<cobj->getId()<<std::endl; // Get minetest.object_refs table lua_getglobal(L, "minetest"); lua_getfield(L, -1, "object_refs"); luaL_checktype(L, -1, LUA_TTABLE); int objectstable = lua_gettop(L); // Get object_refs[id] lua_pushnumber(L, cobj->getId()); // Push id lua_gettable(L, objectstable); // Set object reference to NULL ObjectRef::set_null(L); lua_pop(L, 1); // pop object // Set object_refs[id] = nil lua_pushnumber(L, cobj->getId()); // Push id lua_pushnil(L); lua_settable(L, objectstable); } // Creates a new anonymous reference if cobj=NULL or id=0 void ScriptApiBase::objectrefGetOrCreate( ServerActiveObject *cobj) { lua_State *L = getStack(); if(cobj == NULL || cobj->getId() == 0){ ObjectRef::create(L, cobj); } else {


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