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scriptcraft/ScriptCraftEvaluator.java

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Java
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package net.minecraft.src;
import org.mozilla.javascript.*;
import java.util.List;
import java.io.*;
import javax.swing.JFileChooser;
public class ScriptCraftEvaluator
{
protected static IScriptCraft sc = null;
protected Context ctx = null;
protected Scriptable scope = null;
public static class MCScope extends ImporterTopLevel{
public MCScope(Context ctx){
super(ctx);
}
}
public ScriptCraftEvaluator(IScriptCraft scImpl)
{
ScriptCraftEvaluator.sc = scImpl;
this.ctx = Context.enter();
ScriptableObject importer = new ScriptCraftEvaluator.MCScope(ctx);
this.scope = this.ctx.initStandardObjects(importer);
//
// for mcp debug only
//ctx.evaluateString(scope,"importPackage(net.minecraft.src)","<cmd>",1,null);
//
String[] names = {
"print"
,"load"
,"help"
,"getPlayerPos"
,"getMousePos"
,"putBlock"
,"getBlock"
,"putSign"
};
importer.defineFunctionProperties(names,
ScriptCraftEvaluator.class,
ScriptableObject.DONTENUM);
}
/**
* So clients can add their own properties ...
*
* evaluator.getScope().defineProperty("jsVarName",javaObject);
*/
public ScriptableObject getScope()
{
return (ScriptableObject)this.scope;
}
public Object eval(String javascript, Object invoker)
{
ScriptCraftEvaluator.sc.setInvoker(invoker);
ScriptCraftEvaluator.sc.notifyAdministrators("js> " + javascript);
Object result = null;
try
{
result = ctx.evaluateString(this.scope, javascript, "<cmd>", 1, null);
}
catch(Exception e)
{
e.printStackTrace(System.err);
ScriptCraftEvaluator.sc.notifyAdministrators("Exception: " + e.getMessage());
}
if (result != null)
{
ScriptCraftEvaluator.sc.notifyAdministrators(Context.toString(result));
}
return result;
}
/**
* Load a javascript source file and evaluate its contents.
*/
public static Object load(Context cx, Scriptable thisObj, Object[] args, Function funObj)
{
Object result = null;
File scriptFile = null;
String filename = null;
if (args.length == 0)
{
JFileChooser fc = new javax.swing.JFileChooser();
int rc = fc.showOpenDialog(null);
if (rc ==JFileChooser.APPROVE_OPTION){
scriptFile = fc.getSelectedFile();
}else{
return result;
}
}else{
scriptFile = new File((String)args[0]);
}
FileReader in = null;
try {
in = new FileReader(scriptFile);
}
catch (FileNotFoundException ex)
{
ex.printStackTrace(System.err);
ScriptCraftEvaluator.sc.notifyAdministrators( "Error - File not found " + args[0]);
Context.reportError("Couldn't open file \"" + scriptFile + "\".");
return null;
}
filename = scriptFile.getAbsolutePath();
System.out.println("ScripCraftEvaluator: filename=" + filename);
File parentFile = scriptFile.getParentFile();
String filedir = null;
if (parentFile !=null){
filedir = parentFile.getAbsolutePath();
}
//
// setup the special script-context-only variables
//
((ScriptableObject)thisObj).defineProperty("$SCRIPT",filename,ScriptableObject.DONTENUM);
((ScriptableObject)thisObj).defineProperty("$SCRIPT_DIR",filedir==null?"":filedir,ScriptableObject.DONTENUM);
try {
// Here we evalute the entire contents of the file as
// a script. Text is printed only if the print() function
// is called.
ScriptCraftEvaluator.sc.notifyAdministrators( "Loading " + filename);
result = cx.evaluateReader(thisObj, in, filename, 1, null);
ScriptCraftEvaluator.sc.notifyAdministrators( "Successfully loaded " + filename);
}
catch (WrappedException we) {
we.printStackTrace(System.err);
String wes = we.getWrappedException().toString();
ScriptCraftEvaluator.sc.notifyAdministrators("WrappedException while loading " + filename + ": " + wes);
System.err.println(wes);
we.printStackTrace();
}
catch (EvaluatorException ee) {
ee.printStackTrace(System.err);
System.err.println("js: " + ee.getMessage());
ScriptCraftEvaluator.sc.notifyAdministrators( "EvaluatorException while loading " + filename + ": " + ee.getMessage());
}
catch (JavaScriptException jse) {
jse.printStackTrace(System.err);
System.err.println("js: " + jse.getMessage());
ScriptCraftEvaluator.sc.notifyAdministrators("JavascriptException while loading " + filename + ": " + jse.getMessage());
}
catch (IOException ioe) {
ioe.printStackTrace(System.err);
System.err.println(ioe.toString());
ScriptCraftEvaluator.sc.notifyAdministrators( "IOException while loading " + filename + ": " + ioe.getMessage());
}
finally {
try {
in.close();
}
catch (IOException ioe) {
System.err.println(ioe.toString());
}
}
return result;
}
public static void help(Context cx, Scriptable thisObj, Object[] args, Function funObj)
{
String cwd = java.lang.System.getProperty("user.dir");
String[] helpArgs = {"Current Working Directory: " + cwd,
"load('path-to-script.js')",
"load() (with no params) lets you choose a script file",
"getPlayerPos() returns player coords",
"getMousePos() returns mouse/crosshair coords",
"getBlock(x,y,z) returns the block and metadata e.g. '98' for a stone block or '98:2' for a mossy stone block",
"putBlock(x,y,z,blockId,meta) e.g. putBlock(100,2,50,44,2) puts a sandstone slab (44:2) at position 100,2,50. See http://www.minecraftinfo.com/idlist.htm for block ids"
};
print(cx,thisObj,helpArgs,funObj);
}
public static void print(Context cx, Scriptable thisObj,Object[] args, Function funObj)
{
for (int i=0; i < args.length; i++) {
if (i > 0){
System.out.print(" ");
}
// Convert the arbitrary JavaScript value into a string form.
String s = Context.toString(args[i]);
ScriptCraftEvaluator.sc.notifyAdministrators(s);
System.out.print(s);
}
System.out.println();
}
public static double[] getPlayerPos(Context cx, Scriptable thisObj,Object[] args, Function funObj)
{
return ScriptCraftEvaluator.sc.getPlayerPos();
}
public static double[] getMousePos(Context cx, Scriptable thisObj,Object[] args, Function funObj)
{
return ScriptCraftEvaluator.sc.getMousePos();
}
public static void putBlock(Context cx, Scriptable thisObj,Object[] args, Function funObj)
{
int x;
int y;
int z;
int b;
int m;
if (args.length == 2){
double[] mousePos = ScriptCraftEvaluator.sc.getMousePos();
if (mousePos != null){
x = (int)mousePos[0];
y = (int)mousePos[1];
z = (int)mousePos[2];
b = new Double(args[0].toString()).intValue();
m = new Double(args[1].toString()).intValue();
}else{
return;
}
}else {
x = new Double(args[0].toString()).intValue();
y = new Double(args[1].toString()).intValue();
z = new Double(args[2].toString()).intValue();
b = new Double(args[3].toString()).intValue();
m = new Double(args[4].toString()).intValue();
}
ScriptCraftEvaluator.sc.putBlock(x,y,z,b,m);
}
//
// gets the blockId and metadata at the given coords
// if no coords are provided then the mouse position is used instead.
//
public static String getBlock(Context cx, Scriptable thisObj,Object[] args, Function funObj){
int x;
int y;
int z;
if (args.length != 0){
x = new Double(args[0].toString()).intValue();
y = new Double(args[1].toString()).intValue();
z = new Double(args[2].toString()).intValue();
}else{
double[] mousePos = ScriptCraftEvaluator.sc.getMousePos();
if (mousePos != null){
x = (int)mousePos[0];
y = (int)mousePos[1];
z = (int)mousePos[2];
}else{
return null;
}
}
return ScriptCraftEvaluator.sc.getBlock(x,y,z);
}
public static void putSign(Context cx, Scriptable thisObj,Object[] args, Function funObj){
List jsArray = (List)args[0];
String[] texts = new String[4];
for (int i = 0; i < jsArray.size() && i <= 3;i++){
texts[i] = (String)jsArray.get(i);
}
int x = new Double(args[1].toString()).intValue();
int y = new Double(args[2].toString()).intValue();
int z = new Double(args[3].toString()).intValue();
int b = new Double(args[4].toString()).intValue();
int m = new Double(args[5].toString()).intValue();
ScriptCraftEvaluator.sc.putSign(texts,x,y,z,b,m);
}
}