virtual std::string Generate(gd::BaseEvent & event_, gd::EventsCodeGenerator & codeGenerator,
gd::EventsCodeGenerationContext & /* The function has nothing to do with the current context */)
{
FunctionEvent & event = dynamic_cast<FunctionEvent&>(event_);
//Declaring the pointer to the function parameters
codeGenerator.AddGlobalDeclaration(event.globalDeclaration);
//Declaring function prototype.
codeGenerator.AddGlobalDeclaration("void "+FunctionEvent::MangleFunctionName(event)+"(RuntimeContext *, std::map <std::string, std::vector<RuntimeObject*> *>);\n");
//Generating function code:
std::string functionCode;
functionCode += "\nvoid "+FunctionEvent::MangleFunctionName(event)+"(RuntimeContext * runtimeContext, std::map <std::string, std::vector<RuntimeObject*> *> objectsListsMap)\n{\n";
gd::EventsCodeGenerationContext callerContext;
{
std::vector<std::string> realObjects = codeGenerator.ExpandObjectsName(event.GetObjectsPassedAsArgument(), callerContext);
for (unsigned int i = 0;i<realObjects.size();++i)
{
callerContext.EmptyObjectsListNeeded(realObjects[i]);
functionCode += "std::vector<RuntimeObject*> "+ManObjListName(realObjects[i]) + ";\n";
functionCode += "if ( objectsListsMap[\""+realObjects[i]+"\"] != NULL ) "+ManObjListName(realObjects[i])+" = *objectsListsMap[\""+realObjects[i]+"\"];\n";
}
}
functionCode += "{";
gd::EventsCodeGenerationContext context;
context.InheritsFrom(callerContext);
//Generating function body code
std::string conditionsCode = codeGenerator.GenerateConditionsListCode(event.GetConditions(), context);
std::string actionsCode = codeGenerator.GenerateActionsListCode(event.GetActions(), context);
std::string subeventsCode = codeGenerator.GenerateEventsListCode(event.GetSubEvents(), context);
functionCode += codeGenerator.GenerateObjectsDeclarationCode(context);
std::string ifPredicat = "true";
for (unsigned int i = 0;i<event.GetConditions().size();++i)
ifPredicat += " && condition"+ToString(i)+"IsTrue";
functionCode += conditionsCode;
functionCode += "if (" +ifPredicat+ ")\n";
functionCode += "{\n";
functionCode += actionsCode;
if ( event.HasSubEvents() ) //Sub events
{
functionCode += "\n{\n";
functionCode += subeventsCode;
functionCode += "}\n";
}
functionCode += "}\n";
functionCode += "}\n"; //Context end
functionCode += "}\n"; //Function end
codeGenerator.AddCustomCodeOutsideMain(functionCode);
return "";
}
/**
* Constructor of an extension declares everything the extension contains: objects, actions, conditions and expressions.
*/
Extension()
{
SetExtensionInformation("Function",
_("Function events"),
_("Extension allowing to use events behaving as functions."),
"Florian Rival",
"Open source (MIT License)");
#if defined(GD_IDE_ONLY)
AddAction("LaunchFunction",
_("Launch a function"),
_("Launch a function"),
_("Launch _PARAM0_ (_PARAM1_, _PARAM2_, _PARAM3_, _PARAM4_, _PARAM5_, _PARAM6_, _PARAM7_)"),
_("Functions"),
"res/actions/function24.png",
"res/actions/function.png")
.AddParameter("", _("Name of the function"))
.AddParameter("string", _("Parameter 1"), "", true)
.AddParameter("string", _("Parameter 2"), "", true)
.AddParameter("string", _("Parameter 3"), "", true)
.AddParameter("string", _("Parameter 4"), "", true)
.AddParameter("string", _("Parameter 5"), "", true)
.AddParameter("string", _("Parameter 6"), "", true)
.AddParameter("string", _("Parameter 7"), "", true)
.codeExtraInformation.SetCustomCodeGenerator([](gd::Instruction & instruction, gd::EventsCodeGenerator & codeGenerator, gd::EventsCodeGenerationContext & context) {
gd::String functionName = instruction.GetParameter(0).GetPlainString();
const gd::Project & project = codeGenerator.GetProject();
const gd::Layout & layout = codeGenerator.GetLayout();
const FunctionEvent * functionEvent = FunctionEvent::SearchForFunctionInEvents(project, layout.GetEvents(), functionName);
if ( !functionEvent )
{
std::cout << "Function \""+functionName+"\" not found!" << std::endl;
return "//Function \""+functionName+"\" not found.\n";
}
codeGenerator.AddGlobalDeclaration("void "+FunctionEvent::MangleFunctionName(layout, *functionEvent)+"(RuntimeContext *, std::map <gd::String, std::vector<RuntimeObject*> *>, std::vector<gd::String> &);\n");
gd::String code;
//Generate code for objects passed as arguments
gd::String objectsAsArgumentCode;
{
objectsAsArgumentCode += "runtimeContext->ClearObjectListsMap()";
std::vector<gd::String> realObjects = codeGenerator.ExpandObjectsName(functionEvent->GetObjectsPassedAsArgument(), context);
for (std::size_t i = 0;i<realObjects.size();++i)
{
context.EmptyObjectsListNeeded(realObjects[i]);
objectsAsArgumentCode += ".AddObjectListToMap(\""+codeGenerator.ConvertToString(realObjects[i])+"\", "+ManObjListName(realObjects[i])+")";
}
objectsAsArgumentCode += ".ReturnObjectListsMap()";
}
//Generate code for evaluating parameters
code += "std::vector<gd::String> functionParameters;\n";
for (std::size_t i = 1;i<8;++i)
{
gd::String parameterCode;
gd::CallbacksForGeneratingExpressionCode callbacks(parameterCode, codeGenerator, context);
gd::ExpressionParser parser(instruction.GetParameter(i).GetPlainString());
parser.ParseStringExpression(CppPlatform::Get(), project, layout, callbacks);
if (parameterCode.empty()) parameterCode = "\"\"";
code += "functionParameters.push_back("+parameterCode+");\n";
}
code += FunctionEvent::MangleFunctionName(layout, *functionEvent)+"(runtimeContext, "+objectsAsArgumentCode+", functionParameters);\n";
return code;
});
AddEvent("Function",
_("Function"),
_("Function event : An event which is launched only thanks to action \"Launch a function\""),
"",
"res/function.png",
std::shared_ptr<gd::BaseEvent>(new FunctionEvent))
.SetCodeGenerator([](gd::BaseEvent & event_, gd::EventsCodeGenerator & codeGenerator,
gd::EventsCodeGenerationContext & /* The function has nothing to do with the current context */){
FunctionEvent & event = dynamic_cast<FunctionEvent&>(event_);
const gd::Layout & layout = codeGenerator.GetLayout();
//Declaring function prototype.
codeGenerator.AddGlobalDeclaration("void "+FunctionEvent::MangleFunctionName(layout, event)+"(RuntimeContext *, std::map <gd::String, std::vector<RuntimeObject*> *>, std::vector<gd::String> &);\n");
//Generating function code:
gd::String functionCode;
functionCode += "\nvoid "+FunctionEvent::MangleFunctionName(layout, event)+"(RuntimeContext * runtimeContext, std::map <gd::String, std::vector<RuntimeObject*> *> objectsListsMap, std::vector<gd::String> & currentFunctionParameters)\n{\n";
gd::EventsCodeGenerationContext callerContext;
{
std::vector<gd::String> realObjects = codeGenerator.ExpandObjectsName(event.GetObjectsPassedAsArgument(), callerContext);
for (std::size_t i = 0;i<realObjects.size();++i)
{
callerContext.EmptyObjectsListNeeded(realObjects[i]);
functionCode += "std::vector<RuntimeObject*> "+ManObjListName(realObjects[i]) + ";\n";
functionCode += "if ( objectsListsMap[\""+realObjects[i]+"\"] != NULL ) "+ManObjListName(realObjects[i])+" = *objectsListsMap[\""+realObjects[i]+"\"];\n";
}
}
functionCode += "{";
gd::EventsCodeGenerationContext context;
context.InheritsFrom(callerContext);
//Generating function body code
gd::String conditionsCode = codeGenerator.GenerateConditionsListCode(event.GetConditions(), context);
gd::String actionsCode = codeGenerator.GenerateActionsListCode(event.GetActions(), context);
gd::String subeventsCode = codeGenerator.GenerateEventsListCode(event.GetSubEvents(), context);
functionCode += codeGenerator.GenerateObjectsDeclarationCode(context);
gd::String ifPredicat = "true";
for (std::size_t i = 0;i<event.GetConditions().size();++i)
ifPredicat += " && condition"+gd::String::From(i)+"IsTrue";
functionCode += conditionsCode;
functionCode += "if (" +ifPredicat+ ")\n";
functionCode += "{\n";
functionCode += actionsCode;
if ( event.HasSubEvents() ) //Sub events
{
functionCode += "\n{\n";
functionCode += subeventsCode;
functionCode += "}\n";
}
functionCode += "}\n";
functionCode += "}\n"; //Context end
functionCode += "}\n"; //Function end
codeGenerator.AddCustomCodeOutsideMain(functionCode);
return "";
});
AddStrExpression("Parameter",
_("Parameter of the current function"),
_("Return the text contained in a parameter of the currently launched function"),
_("Function"),
"res/function.png")
.AddParameter("expression", _("Index of the parameter (Parameters start at 0!)"))
.codeExtraInformation.SetCustomCodeGenerator([](const std::vector<gd::Expression> & parameters, gd::EventsCodeGenerator & codeGenerator, gd::EventsCodeGenerationContext & context) {
codeGenerator.AddIncludeFile("Function/FunctionTools.h");
const gd::Project & game = codeGenerator.GetProject();
const gd::Layout & scene = codeGenerator.GetLayout();
//Ensure currentFunctionParameters vector is always existing.
gd::String mainFakeParameters = "std::vector<gd::String> currentFunctionParameters;\n";
if (codeGenerator.GetCustomCodeInMain().find(mainFakeParameters) == gd::String::npos)
codeGenerator.AddCustomCodeInMain(mainFakeParameters);
//Generate code for evaluating index
gd::String expression;
gd::CallbacksForGeneratingExpressionCode callbacks(expression, codeGenerator, context);
gd::ExpressionParser parser(parameters[0].GetPlainString());
if (!parser.ParseMathExpression(codeGenerator.GetPlatform(), game, scene, callbacks) || expression.empty()) expression = "0";
gd::String code;
code += "GDpriv::FunctionTools::GetSafelyStringFromVector(currentFunctionParameters, "+expression+")";
return code;
});
#endif
GD_COMPLETE_EXTENSION_COMPILATION_INFORMATION();
};
virtual std::string GenerateCode(gd::Instruction & instruction, gd::EventsCodeGenerator & codeGenerator, gd::EventsCodeGenerationContext & context)
{
codeGenerator.AddGlobalDeclaration(FunctionEvent::globalDeclaration);
std::string functionName = instruction.GetParameter(0).GetPlainString();
const gd::Project & project = codeGenerator.GetProject();
const gd::Layout & scene = codeGenerator.GetLayout();
const FunctionEvent * functionEvent = FunctionEvent::SearchForFunctionInEvents(scene.GetEvents(), functionName);
if ( !functionEvent )
{
std::cout << "Function \""+functionName+"\" not found!" << std::endl;
return "//Function \""+functionName+"\" not found.\n";
}
std::string code;
//Generate code for objects passed as arguments
std::string objectsAsArgumentCode;
{
objectsAsArgumentCode += "runtimeContext->ClearObjectListsMap()";
std::vector<std::string> realObjects = codeGenerator.ExpandObjectsName(functionEvent->GetObjectsPassedAsArgument(), context);
for (unsigned int i = 0;i<realObjects.size();++i)
{
context.EmptyObjectsListNeeded(realObjects[i]);
objectsAsArgumentCode += ".AddObjectListToMap(\""+codeGenerator.ConvertToString(realObjects[i])+"\", "+ManObjListName(realObjects[i])+")";
}
objectsAsArgumentCode += ".ReturnObjectListsMap()";
}
//Generate code for evaluating parameters
code += "std::vector<std::string> functionParameters;\n";
for (unsigned int i = 1;i<8;++i)
{
std::string parameterCode;
gd::CallbacksForGeneratingExpressionCode callbacks(parameterCode, codeGenerator, context);
gd::ExpressionParser parser(instruction.GetParameter(i).GetPlainString());
parser.ParseStringExpression(CppPlatform::Get(), project, scene, callbacks);
if (parameterCode.empty()) parameterCode = "\"\"";
code += "functionParameters.push_back("+parameterCode+");\n";
}
code += "std::vector<std::string> * oldFunctionParameters = currentFunctionParameters;\n";
code += "currentFunctionParameters = &functionParameters;\n";
code += FunctionEvent::MangleFunctionName(*functionEvent)+"(runtimeContext, "+objectsAsArgumentCode+");\n";
code += "currentFunctionParameters = oldFunctionParameters;\n";
return code;
};
