[8075] | 1 | #include "script.h" |
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[8202] | 2 | #include "script_class.h" |
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| 3 | #include "luaincl.h" |
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[8197] | 4 | |
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[8202] | 5 | |
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[8193] | 6 | #include "loading/load_param.h" |
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[8197] | 7 | #include "parser/tinyxml/tinyxml.h" |
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[8075] | 8 | |
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[8197] | 9 | #include "class_list.h" |
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[8075] | 10 | |
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[8193] | 11 | Script::Script(const TiXmlElement* root) |
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[8075] | 12 | { |
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[8193] | 13 | this->setClassID(CL_SCRIPT, "Script"); |
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[8231] | 14 | |
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[8075] | 15 | returnCount = argumentCount = 0; |
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| 16 | |
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| 17 | luaState = lua_open(); |
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| 18 | |
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| 19 | luaopen_base(luaState); |
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| 20 | luaopen_table(luaState); |
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| 21 | luaopen_io(luaState); |
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| 22 | luaopen_string(luaState); |
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| 23 | luaopen_math(luaState); |
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| 24 | luaopen_debug(luaState); |
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[8193] | 25 | if (root != NULL) |
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| 26 | this->loadParams(root); |
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[8075] | 27 | } |
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| 28 | |
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| 29 | |
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| 30 | Script::~Script() |
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| 31 | { |
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| 32 | lua_setgcthreshold(luaState, 0); // collected garbage |
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| 33 | lua_close(luaState); |
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| 34 | } |
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| 35 | |
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| 36 | |
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[8193] | 37 | void Script::loadParams(const TiXmlElement* root) |
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| 38 | { |
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[8199] | 39 | BaseObject::loadParams(root); |
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[8231] | 40 | |
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[8197] | 41 | LOAD_PARAM_START_CYCLE(root, object); |
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[8193] | 42 | { |
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[8197] | 43 | LoadParam_CYCLE(object, "object", this, Script, addObject) |
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[8193] | 44 | .describe("The name of an object that is needed by a script"); |
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| 45 | } |
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[8197] | 46 | LOAD_PARAM_END_CYCLE(object); |
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[8193] | 47 | |
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| 48 | |
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| 49 | LoadParam(root, "file", this, Script, loadFileNoRet) |
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| 50 | .describe("the fileName of the script, that should be loaded into this world") |
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| 51 | .defaultValues(""); |
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| 52 | } |
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| 53 | |
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| 54 | |
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| 55 | |
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| 56 | bool Script::loadFile(const std::string& filename) |
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[8075] | 57 | { |
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| 58 | |
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| 59 | if(currentFile.length() != 0) |
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[8131] | 60 | { |
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[8075] | 61 | printf("Could not load %s because an other file is already loaded: %s\n",filename.c_str(), currentFile.c_str()); |
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[8085] | 62 | return false; |
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| 63 | } |
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[8075] | 64 | |
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| 65 | int error = luaL_loadfile (luaState, filename.c_str()); |
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| 66 | |
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| 67 | if(error == 0) |
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| 68 | { |
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| 69 | error = lua_pcall(luaState, 0, 0, 0); |
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| 70 | |
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| 71 | if(error == 0) |
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| 72 | { |
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| 73 | currentFile = filename; |
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| 74 | return true; |
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| 75 | } |
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| 76 | else |
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| 77 | { |
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[8289] | 78 | printf("ERROR while loading file %s: ",filename.c_str()); |
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| 79 | reportError(error); |
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[8075] | 80 | } |
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| 81 | |
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| 82 | } |
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| 83 | else |
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| 84 | { |
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[8289] | 85 | printf("ERROR while loading file %s: ",filename.c_str()); |
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[8075] | 86 | reportError(error); |
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| 87 | } |
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| 88 | |
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| 89 | return false; |
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| 90 | } |
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| 91 | |
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[8231] | 92 | |
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[8193] | 93 | void Script::addObject(const std::string& className, const std::string& objectName) |
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| 94 | { |
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[8289] | 95 | printf("Script: I am about to add %s of class %s\n",objectName.c_str(),className.c_str()); |
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| 96 | |
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[8202] | 97 | BaseObject* scriptClass = ClassList::getObject(className, CL_SCRIPT_CLASS); |
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[8207] | 98 | WorldObject tmpObj; |
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[8197] | 99 | if (scriptClass != NULL) |
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| 100 | { |
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[8231] | 101 | tmpObj.type = className; |
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[8206] | 102 | if( !classIsRegistered(className) ) |
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[8207] | 103 | { |
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[8202] | 104 | static_cast<ScriptClass*>(scriptClass)->registerClass(this); |
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[8207] | 105 | } |
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[8231] | 106 | |
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[8197] | 107 | BaseObject* object = ClassList::getObject(objectName, className); |
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[8206] | 108 | if (object != NULL && !objectIsAdded(objectName)) |
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[8197] | 109 | { |
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[8202] | 110 | static_cast<ScriptClass*>(scriptClass)->insertObject(this, object, false); |
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[8207] | 111 | tmpObj.name = objectName; |
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| 112 | registeredObjects.push_back(tmpObj); |
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[8197] | 113 | } |
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| 114 | } |
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[8193] | 115 | } |
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| 116 | |
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[8231] | 117 | |
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| 118 | |
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| 119 | |
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[8075] | 120 | bool Script::executeFile() |
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| 121 | { |
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[8231] | 122 | printf("WARNING: script.executeFile is not implemented yet"); |
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| 123 | /*if(currentFile.length() != 0) |
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[8075] | 124 | { |
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| 125 | int error = lua_pcall(luaState, 0, 0, 0); |
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| 126 | if( error == 0) |
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| 127 | return true; |
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| 128 | else |
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| 129 | { |
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| 130 | reportError(error); |
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| 131 | return false; |
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| 132 | } |
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[8231] | 133 | }*/ |
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[8075] | 134 | return false; |
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| 135 | } |
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| 136 | |
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| 137 | bool Script::selectFunction(std::string& functionName, int retCount) |
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| 138 | { |
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[8085] | 139 | if(returnCount == 0 && currentFunction.length() == 0) //no return values left on the stack and no other function selected |
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[8075] | 140 | { |
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| 141 | lua_pushlstring(luaState, functionName.c_str(), functionName.size() ); |
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| 142 | lua_gettable(luaState, LUA_GLOBALSINDEX); |
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| 143 | |
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| 144 | if(lua_isfunction( luaState , -1)) |
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| 145 | { |
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| 146 | returnCount = retCount; |
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| 147 | argumentCount = 0; |
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| 148 | currentFunction = functionName; |
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| 149 | return true; |
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| 150 | } |
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| 151 | else |
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| 152 | return false; |
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| 153 | } |
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| 154 | else |
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[8085] | 155 | printf("There is an other function active ( %s ) or there are unremoved return values on the stack. Please remove them first.\n",currentFunction.c_str()); |
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| 156 | return false; |
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[8075] | 157 | } |
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| 158 | |
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| 159 | //return number of returned values |
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| 160 | bool Script::executeFunction() |
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| 161 | { |
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| 162 | if(currentFunction.length() != 0 ) |
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| 163 | { |
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| 164 | int error = lua_pcall(luaState, argumentCount, returnCount,0); |
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| 165 | if(error != 0) |
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| 166 | { |
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[8289] | 167 | printf("ERROR while executing function %s: \n",currentFunction.c_str()); |
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[8075] | 168 | reportError(error); |
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[8289] | 169 | //clean up |
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| 170 | currentFunction.assign(""); |
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| 171 | argumentCount = returnCount = 0; |
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[8075] | 172 | return false; |
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| 173 | } |
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| 174 | else |
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| 175 | { |
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| 176 | currentFunction.assign("");//a function gets unusable after beeing called for the first time |
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| 177 | argumentCount = 0; |
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| 178 | return true; |
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| 179 | } |
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| 180 | } |
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| 181 | else |
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| 182 | printf("Error: no function selected.\n"); |
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[8289] | 183 | |
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| 184 | return false; |
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[8075] | 185 | } |
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| 186 | |
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| 187 | |
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| 188 | //overload this function to add different types |
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| 189 | bool Script::pushParam(int param, std::string& toFunction) |
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| 190 | { |
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| 191 | if(currentFunction.compare(toFunction) == 0) |
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| 192 | { |
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| 193 | lua_pushnumber(luaState, (lua_Number) param); |
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| 194 | argumentCount++; |
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| 195 | return true; |
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| 196 | } |
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| 197 | else |
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| 198 | { |
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| 199 | printf("Couldn't add parameter because the wrong function is selected: %s instead of %s\n", currentFunction.c_str(), toFunction.c_str()); |
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| 200 | return false; |
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| 201 | } |
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| 202 | |
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| 203 | } |
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| 204 | |
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| 205 | |
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| 206 | bool Script::pushParam(float param, std::string& toFunction) |
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| 207 | { |
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| 208 | if(currentFunction.compare(toFunction) == 0) |
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| 209 | { |
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| 210 | lua_pushnumber(luaState,(lua_Number) param); |
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| 211 | argumentCount++; |
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| 212 | return true; |
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| 213 | } |
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| 214 | else |
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| 215 | { |
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| 216 | printf("Couldn't add parameter because the wrong function is selected: %s instead of %s\n", currentFunction.c_str(), toFunction.c_str()); |
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| 217 | return false; |
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| 218 | } |
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| 219 | |
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| 220 | } |
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| 221 | |
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| 222 | bool Script::pushParam(double param, std::string& toFunction) |
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| 223 | { |
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| 224 | if(currentFunction.compare(toFunction) == 0) |
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| 225 | { |
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| 226 | lua_pushnumber(luaState,(lua_Number) param); |
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| 227 | argumentCount++; |
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| 228 | return true; |
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| 229 | } |
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| 230 | else |
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| 231 | { |
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| 232 | printf("Couldn't add parameter because the wrong function is selected: %s instead of %s\n", currentFunction.c_str(), toFunction.c_str()); |
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| 233 | return false; |
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| 234 | } |
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| 235 | |
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| 236 | } |
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| 237 | |
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| 238 | int Script::getReturnedInt() |
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| 239 | { |
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| 240 | int returnValue; |
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| 241 | if(returnCount > 0) |
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| 242 | { |
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| 243 | if(lua_isnumber(luaState, -1)) |
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| 244 | { |
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| 245 | returnValue = (int)lua_tonumber(luaState, -1); |
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| 246 | returnCount--; |
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| 247 | lua_pop(luaState,1); |
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| 248 | } |
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| 249 | } |
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| 250 | return returnValue; |
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| 251 | } |
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| 252 | |
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| 253 | |
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| 254 | bool Script::getReturnedBool() |
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| 255 | { |
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| 256 | bool returnValue; |
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| 257 | if(returnCount > 0) |
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| 258 | { |
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| 259 | if(lua_isboolean(luaState, -1)) |
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| 260 | { |
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| 261 | returnValue = (bool)lua_toboolean(luaState, -1); |
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| 262 | returnCount--; |
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| 263 | lua_pop(luaState,1); |
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| 264 | } |
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| 265 | } |
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| 266 | return returnValue; |
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| 267 | } |
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| 268 | |
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| 269 | float Script::getReturnedFloat() |
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| 270 | { |
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| 271 | float returnValue; |
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| 272 | if(returnCount > 0) |
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| 273 | { |
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| 274 | if(lua_isnumber(luaState, -1)) |
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| 275 | { |
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| 276 | returnValue = (float)lua_tonumber(luaState, -1); |
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| 277 | returnCount--; |
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| 278 | lua_pop(luaState,1); |
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| 279 | } |
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| 280 | } |
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| 281 | return returnValue; |
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| 282 | } |
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| 283 | |
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[8131] | 284 | void Script::getReturnedString(std::string& string) |
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| 285 | { |
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[8134] | 286 | const char* returnValue; |
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[8131] | 287 | if(returnCount > 0) |
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| 288 | { |
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[8133] | 289 | if(lua_isstring(luaState, -1)) |
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[8131] | 290 | { |
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| 291 | returnValue = lua_tostring(luaState, -1); |
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| 292 | returnCount--; |
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| 293 | lua_pop(luaState,1); |
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| 294 | } |
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| 295 | } |
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| 296 | string.assign(returnValue); |
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| 297 | } |
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| 298 | |
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[8075] | 299 | int Script::reportError(int error) |
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| 300 | { |
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[8085] | 301 | if(error != 0) |
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| 302 | { |
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| 303 | const char *msg = lua_tostring(luaState, -1); |
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| 304 | if (msg == NULL) msg = "(error with no message)"; |
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| 305 | fprintf(stderr, "ERROR: %s\n", msg); |
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| 306 | lua_pop(luaState, 1); |
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[8289] | 307 | } |
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[8085] | 308 | return error; |
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[8075] | 309 | } |
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| 310 | |
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[8231] | 311 | |
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[8206] | 312 | bool Script::classIsRegistered(const std::string& type) |
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| 313 | { |
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[8207] | 314 | for(std::list<WorldObject>::const_iterator it = registeredObjects.begin(); it != registeredObjects.end(); it++ ) |
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[8206] | 315 | { |
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| 316 | if( (*it).type == type) |
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| 317 | { |
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| 318 | return true; |
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| 319 | } |
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| 320 | } |
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| 321 | return false; |
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| 322 | } |
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[8231] | 323 | |
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| 324 | |
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| 325 | |
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[8206] | 326 | bool Script::objectIsAdded(const std::string& name) |
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| 327 | { |
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[8207] | 328 | for(std::list<WorldObject>::const_iterator it = registeredObjects.begin(); it != registeredObjects.end(); it++ ) |
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[8206] | 329 | { |
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| 330 | if( (*it).name == name) |
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| 331 | { |
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| 332 | return true; |
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| 333 | } |
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| 334 | } |
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| 335 | return false; |
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[8231] | 336 | |
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| 337 | |
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[8206] | 338 | } |
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