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wild-master
208 lines
10 KiB
C++
208 lines
10 KiB
C++
/**
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GDevelop - Function Extension
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Copyright (c) 2008-2016 Florian Rival (Florian.Rival@gmail.com)
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This project is released under the MIT License.
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*/
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#include "GDCpp/Extensions/ExtensionBase.h"
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#include "GDCore/Events/CodeGeneration/ExpressionsCodeGeneration.h"
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#include "GDCore/Events/CodeGeneration/EventsCodeGenerationContext.h"
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#include "GDCore/Events/CodeGeneration/EventsCodeGenerator.h"
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#include "GDCore/Events/Tools/EventsCodeNameMangler.h"
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#include "GDCpp/Extensions/CppPlatform.h"
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#include "GDCpp/Runtime/Project/Project.h"
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#include "GDCpp/Runtime/Project/Layout.h"
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#include "GDCpp/Runtime/CommonTools.h"
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#if defined(GD_IDE_ONLY)
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#include "GDCore/Events/Parsers/ExpressionParser.h"
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#include "GDCore/Events/Instruction.h"
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#endif
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#include "FunctionEvent.h"
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/**
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* \brief This class declares information about the extension.
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*/
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class Extension : public ExtensionBase
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{
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public:
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/**
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* Constructor of an extension declares everything the extension contains: objects, actions, conditions and expressions.
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*/
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Extension()
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{
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SetExtensionInformation("Function",
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_("Function events"),
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_("This Extension allows you to use events that behave like functions."),
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"Florian Rival",
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"Open source (MIT License)");
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#if defined(GD_IDE_ONLY)
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AddAction("LaunchFunction",
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_("Launch a function"),
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_("Launch a function"),
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_("Launch _PARAM0_ (_PARAM1_, _PARAM2_, _PARAM3_, _PARAM4_, _PARAM5_, _PARAM6_, _PARAM7_)"),
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_("Functions"),
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"res/actions/function24.png",
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"res/actions/function.png")
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.AddParameter("", _("Name of the function"))
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.AddParameter("string", _("Parameter 1"), "", true)
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.AddParameter("string", _("Parameter 2"), "", true)
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.AddParameter("string", _("Parameter 3"), "", true)
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.AddParameter("string", _("Parameter 4"), "", true)
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.AddParameter("string", _("Parameter 5"), "", true)
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.AddParameter("string", _("Parameter 6"), "", true)
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.AddParameter("string", _("Parameter 7"), "", true)
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.codeExtraInformation.SetCustomCodeGenerator([](gd::Instruction & instruction, gd::EventsCodeGenerator & codeGenerator, gd::EventsCodeGenerationContext & context) {
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gd::String functionName = instruction.GetParameter(0).GetPlainString();
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const gd::Project & project = codeGenerator.GetProject();
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const gd::Layout & layout = codeGenerator.GetLayout();
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const FunctionEvent * functionEvent = FunctionEvent::SearchForFunctionInEvents(project, layout.GetEvents(), functionName);
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if ( !functionEvent )
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{
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std::cout << "Function \""+functionName+"\" not found!" << std::endl;
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return "//Function \""+functionName+"\" not found.\n";
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}
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codeGenerator.AddGlobalDeclaration("void "+FunctionEvent::MangleFunctionName(layout, *functionEvent)+"(RuntimeContext *, std::map <gd::String, std::vector<RuntimeObject*> *>, std::vector<gd::String> &);\n");
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gd::String code;
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//Generate code for objects passed as arguments
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gd::String objectsAsArgumentCode;
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{
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objectsAsArgumentCode += "runtimeContext->ClearObjectListsMap()";
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std::vector<gd::String> realObjects = codeGenerator.ExpandObjectsName(functionEvent->GetObjectsPassedAsArgument(), context);
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for (std::size_t i = 0;i<realObjects.size();++i)
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{
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context.EmptyObjectsListNeeded(realObjects[i]);
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objectsAsArgumentCode += ".AddObjectListToMap(\""+codeGenerator.ConvertToString(realObjects[i])+"\", "+ManObjListName(realObjects[i])+")";
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}
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objectsAsArgumentCode += ".ReturnObjectListsMap()";
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}
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//Generate code for evaluating parameters
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code += "std::vector<gd::String> functionParameters;\n";
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for (std::size_t i = 1;i<8;++i)
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{
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gd::String parameterCode;
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gd::CallbacksForGeneratingExpressionCode callbacks(parameterCode, codeGenerator, context);
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gd::ExpressionParser parser(instruction.GetParameter(i).GetPlainString());
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parser.ParseStringExpression(CppPlatform::Get(), project, layout, callbacks);
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if (parameterCode.empty()) parameterCode = "\"\"";
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code += "functionParameters.push_back("+parameterCode+");\n";
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}
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code += FunctionEvent::MangleFunctionName(layout, *functionEvent)+"(runtimeContext, "+objectsAsArgumentCode+", functionParameters);\n";
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return code;
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});
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AddEvent("Function",
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_("Function"),
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_("Function event : An event that can only be launched by the action named \"Launch a function\""),
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"",
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"res/function.png",
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std::make_shared<FunctionEvent>())
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.SetCodeGenerator([](gd::BaseEvent & event_, gd::EventsCodeGenerator & codeGenerator,
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gd::EventsCodeGenerationContext & /* The function has nothing to do with the current context */){
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FunctionEvent & event = dynamic_cast<FunctionEvent&>(event_);
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const gd::Layout & layout = codeGenerator.GetLayout();
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//Declaring function prototype.
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codeGenerator.AddGlobalDeclaration("void "+FunctionEvent::MangleFunctionName(layout, event)+"(RuntimeContext *, std::map <gd::String, std::vector<RuntimeObject*> *>, std::vector<gd::String> &);\n");
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//Generating function code:
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gd::String functionCode;
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functionCode += "\nvoid "+FunctionEvent::MangleFunctionName(layout, event)+"(RuntimeContext * runtimeContext, std::map <gd::String, std::vector<RuntimeObject*> *> objectsListsMap, std::vector<gd::String> & currentFunctionParameters)\n{\n";
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gd::EventsCodeGenerationContext callerContext;
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{
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std::vector<gd::String> realObjects = codeGenerator.ExpandObjectsName(event.GetObjectsPassedAsArgument(), callerContext);
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for (std::size_t i = 0;i<realObjects.size();++i)
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{
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callerContext.EmptyObjectsListNeeded(realObjects[i]);
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functionCode += "std::vector<RuntimeObject*> "+ManObjListName(realObjects[i]) + ";\n";
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functionCode += "if ( objectsListsMap[\""+realObjects[i]+"\"] != NULL ) "+ManObjListName(realObjects[i])+" = *objectsListsMap[\""+realObjects[i]+"\"];\n";
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}
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}
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functionCode += "{";
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gd::EventsCodeGenerationContext context;
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context.InheritsFrom(callerContext);
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//Generating function body code
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gd::String conditionsCode = codeGenerator.GenerateConditionsListCode(event.GetConditions(), context);
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gd::String actionsCode = codeGenerator.GenerateActionsListCode(event.GetActions(), context);
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gd::String subeventsCode = codeGenerator.GenerateEventsListCode(event.GetSubEvents(), context);
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functionCode += codeGenerator.GenerateObjectsDeclarationCode(context);
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gd::String ifPredicat = "true";
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for (std::size_t i = 0;i<event.GetConditions().size();++i)
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ifPredicat += " && condition"+gd::String::From(i)+"IsTrue";
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functionCode += conditionsCode;
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functionCode += "if (" +ifPredicat+ ")\n";
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functionCode += "{\n";
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functionCode += actionsCode;
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if ( event.HasSubEvents() ) //Sub events
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{
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functionCode += "\n{\n";
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functionCode += subeventsCode;
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functionCode += "}\n";
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}
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functionCode += "}\n";
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functionCode += "}\n"; //Context end
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functionCode += "}\n"; //Function end
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codeGenerator.AddCustomCodeOutsideMain(functionCode);
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return "";
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});
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AddStrExpression("Parameter",
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_("Parameter of the current function"),
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_("Return the text contained in a parameter of the currently-launched function"),
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_("Function"),
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"res/function.png")
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.AddParameter("expression", _("Index of the parameter (Parameters start at 0!)"))
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.codeExtraInformation.SetCustomCodeGenerator([](const std::vector<gd::Expression> & parameters, gd::EventsCodeGenerator & codeGenerator, gd::EventsCodeGenerationContext & context) {
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codeGenerator.AddIncludeFile("Function/FunctionTools.h");
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const gd::Project & game = codeGenerator.GetProject();
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const gd::Layout & scene = codeGenerator.GetLayout();
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//Ensure currentFunctionParameters vector is always existing.
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gd::String mainFakeParameters = "std::vector<gd::String> currentFunctionParameters;\n";
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if (codeGenerator.GetCustomCodeInMain().find(mainFakeParameters) == gd::String::npos)
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codeGenerator.AddCustomCodeInMain(mainFakeParameters);
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//Generate code for evaluating index
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gd::String expression;
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gd::CallbacksForGeneratingExpressionCode callbacks(expression, codeGenerator, context);
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gd::ExpressionParser parser(parameters[0].GetPlainString());
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if (!parser.ParseMathExpression(codeGenerator.GetPlatform(), game, scene, callbacks) || expression.empty()) expression = "0";
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gd::String code;
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code += "GDpriv::FunctionTools::GetSafelyStringFromVector(currentFunctionParameters, "+expression+")";
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return code;
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});
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#endif
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GD_COMPLETE_EXTENSION_COMPILATION_INFORMATION();
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};
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};
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/**
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* Used by GDevelop to create the extension class
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* -- Do not need to be modified. --
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*/
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extern "C" ExtensionBase * GD_EXTENSION_API CreateGDExtension() {
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return new Extension;
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}
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