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MinimalLuaInterpreter

Minimal Lua interpreter for ESP32.

Lightweight Lua implementation for ESP32 with reduced memory footprint and essential graphics functions only.

Namespace: enjin2

Header: include/enjin2/scripting/lua_interpreter.hpp

Public Methods​

MinimalLuaInterpreter()​

Constructor.

~MinimalLuaInterpreter() override​

Destructor.

void setGraphics(IScriptGraphics *gfx)​

Set graphics interface.

gfxGraphics interface to use

virtual bool initialize() override​

Initialize the minimal Lua interpreter.

True if initialization successful

virtual void shutdown() override​

Shutdown the minimal Lua interpreter.

virtual bool isInitialized() const override const​

Check if interpreter is initialized.

True if initialized

virtual ScriptResult executeString(const std::string &code) override​

Execute Lua code string.

codeLua code to execute Execution result

virtual ScriptResult executeFile(const std::string &filename) override​

Execute Lua script file.

filenamePath to script file Execution result

virtual ScriptResult callFunction(const std::string &functionName) override​

Call named Lua function.

functionNameName of function to call Execution result

virtual void setGlobal(const std::string &name, double value) override​

Set global number variable.

nameVariable name valueNumber value to set

virtual void setGlobal(const std::string &name, const std::string &value) override​

Set global string variable.

nameVariable name valueString value to set

virtual void setGlobal(const std::string &name, bool value) override​

Set global boolean variable.

nameVariable name valueBoolean value to set

virtual double getGlobalNumber(const std::string &name, double defaultValue=0.0) override​

Get global number variable.

nameVariable name defaultValueDefault value if not found Number value (or default if not found)

virtual std::string getGlobalString(const std::string &name, const std::string &defaultValue="") override​

Get global string variable.

nameVariable name defaultValueDefault value if not found String value (or default if not found)

virtual bool getGlobalBool(const std::string &name, bool defaultValue=false) override​

Get global boolean variable.

nameVariable name defaultValueDefault value if not found Boolean value (or default if not found)

virtual size_t getMemoryUsage() const override const​

Get current memory usage.

Memory usage in bytes

virtual constchar * getTypeName() const override const​

Get interpreter type name.

Type name string

Private Methods​

void registerMinimalBindings()​

Register minimal graphics functions.

void * allocateMemory(size_t size)​

Allocate memory from pool.

sizeSize to allocate Allocated memory or nullptr

void freeMemory(void *ptr)​

Free memory back to pool.

ptrMemory to free