ofxAddons
ofxLua is wrapper of lua
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README
ofxLua
ofxLua is lua wrapper for call lua from openFrameworks. already exists same name repository, however, this repository is differ how to use. also, support only windows os
Introduction
ofxLua can write global variable, read global variable, and define function. bellow code is example source code.#include "ofApp.h"
include "ofxLua.h"
include <iostream>
include <lua.hpp>
include <lauxlib.h>
include <lualib.h>
int toNum(lua_State state) {
std::string str = lua_tostring(state, -1);
lua_pushinteger(state, std::atoi(str.c_str()));
return 1;
}
int seq(lua_State state) {
ofxLua::Context::Instance ctx = ofxLua::Context::top();
std::cout << ctx->get<const char*>("str") << std::endl;
if (!ctx->contains("i")) {
ctx->set("i", 0);
lua_pushinteger(state, 0);
}
else {
int i = ctx->get<int>("i");
ctx->set("i", i + 1);
lua_pushinteger(state, i + 1);
}
return 1;
}
//--------------------------------------------------------------
void ofApp::setup() {
ofxLua::Interpreter lua;
ofxLua::Context::Instance ctx = ofxLua::Context::push();
lua.loadString(
R"(
function hello()
print("hello ofxLua!")
end
function printCppVariable()
print(cppVariable);
end
function callCppFunction()
print(toNum("100") + 11);
end
function callCppFunction2()
print(seq());
print(seq());
end
)");
lua.call("hello", std::vector<ofxLua::Object>{}, std::vector<ofxLua::Type>{}).check();
// define variable
lua.setGlobalString("cppVariable", "Cpp String").check();
lua.call("printCppVariable", std::vector<ofxLua::Object>{}, std::vector<ofxLua::Type>{}).check();
// define function
lua.define("toNum", toNum);
lua.call("callCppFunction", std::vector<ofxLua::Object>{}, std::vector<ofxLua::Type>{}).check();
// use Context
ctx->set("str", "FirstString");
lua.define("seq", seq);
lua.call("callCppFunction2", std::vector<ofxLua::Object>{}, std::vector<ofxLua::Type>{}).check();
ctx->set("str", "SecondString");
lua.call("callCppFunction2", std::vector<ofxLua::Object>{}, std::vector<ofxLua::Type>{}).check();
ofxLua::Context::pop();
}
//--------------------------------------------------------------
void ofApp::update() {
}
//--------------------------------------------------------------
void ofApp::draw() {
}
//--------------------------------------------------------------
void ofApp::keyPressed(int key) {
}
//--------------------------------------------------------------
void ofApp::keyReleased(int key) {
}
//--------------------------------------------------------------
void ofApp::mouseMoved(int x, int y) {
}
//--------------------------------------------------------------
void ofApp::mouseDragged(int x, int y, int button) {
}
//--------------------------------------------------------------
void ofApp::mousePressed(int x, int y, int button) {
}
//--------------------------------------------------------------
void ofApp::mouseReleased(int x, int y, int button) {
}
//--------------------------------------------------------------
void ofApp::mouseEntered(int x, int y) {
}
//--------------------------------------------------------------
void ofApp::mouseExited(int x, int y) {
}
//--------------------------------------------------------------
void ofApp::windowResized(int w, int h) {
}
//--------------------------------------------------------------
void ofApp::gotMessage(ofMessage msg) {
}
//--------------------------------------------------------------
void ofApp::dragEvent(ofDragInfo dragInfo) {
}
output
hello ofxLua!
Cpp String
111
FirstString
0
FirstString
1
SecondString
2
SecondString
3
License
MIT LicenseInstallation
please this folder placement intoopenFrameworks/addons/ and later, launch ofxLua/scripts/init.bat. will lua library download by nuget, into libs/lua/packagesDependencies
have no dependencies.Compatibility
it checked works only withof_v0.10.1_vs2017_release. not supported other than windows os.