Unity3d parsing text executing a registered custom function

Recently there is a need to let the program parsing and editing a text generated a piece of CG, the content is used in general

Cgsetcameraex (118.6324,30.71189,75.55666,45,-45,0,0) cgclonemyplayer (1) cgsetposdir (1,109,80,0) cgSetCameraEx ( 114.18,23.17,96.9,11.51974,-61.49661,-3.384705,3.5) Cgcreateactor (2,25,108,100,90) cgWait (0.2) CgMove ( 1,109.7,100,9,false) cgwait (3) cgfacetoactor (+) cgwait (1.5) Cgpoptalk (1,1,2)

　　

My approach is to use a third-party library, Ncalc, to register the custom function with the parser and have the parser go to load the text

Using unityengine;using system.collections;using ncalc;using system.collections.generic;using System;// Parse string expression execution function public class Callfunctionscript {//cache function table Private readonly dictionary<string, func<expression[], object>> mregisterfunctions = new dictionary<string, func<expression[], object>> ();//Register the function that can be executed// The registered function format satisfies the public static object Func (expression[] args)//function return value cannot be null if the return value is not required to return 1public void Registerfunction (string FuncName, func<expression[], object> Func) {if (!mregisterfunctions.containskey (FuncName)) { Mregisterfunctions.add (FuncName, func);} Else{unityengine.debug.logerror ("duplicate func" + FuncName);}} Anti-registration all functions public void unrgisterallfunction () {mregisterfunctions.clear ();} Execute function public Object execute (string expression) {var exp = new expression (expression);//function Agent exp. Evaluatefunction + = delegate (string name, Functionargs args) {func<expression[], object> func;if    (Mregisterfunctions.trygetvalue (name, out func))        {object result = NULL; try {result = func (args.                Parameters); }catch (Exception ex) {UnityEngine.Debug.LogError ("Execute" +name + "() Error:" + ex.                ToString ());} finally {args.                result = result;        }}else{unityengine.debug.logerror ("Can ' t find function [" + name+ "]");}        }; try {return exp. Evaluate ();//Execute function} catch (Exception ex) {debug.logerror ("Evaluate \" + expression + "\" Error: "+ex .            ToString ());        return null; }}}

　　

Functions that are registered as such

public static class Cgfunctionwrapper{public static object Cgclonemyplayer (expression[] args) {if (args. Length < 1) {Logger.error ("Cgclonemyplayer () args<[1]"); return 0;} PlayCG.Instance.cgCloneMyPlayer (Convert.ToInt32 (args[0). Evaluate ())); return 1;}}

　　

How to use

Public Callfunctionscript mexecutor = new Callfunctionscript (); Mexecutor.registerfunction ("Cgclonemyplayer", Cgfunctionwrapper.cgclonemyplayer); Mexecutor.execute ("Cgclonemyplayer (1)");

　　

Unity3d parsing text executing a registered custom function