public GameAttributeDependency(GameAttribute attribute, int?key, bool usesExplicitKey,
bool isManualDependency)
{
Attribute = attribute;
Key = key;
UsesExplicitKey = usesExplicitKey;
IsManualDependency = isManualDependency;
}
public static void ProcessAttributes(GameAttribute[] attributes)
{
// build string -> GameAttribute lookup
var attributeLookup = attributes.ToDictionary(attr => attr.Name);
// will contain C# code for the func<> body that represents each attribute's script.
var csharpScripts = new Dictionary <GameAttribute, string>();
// generate C#-compatible source lines from scripts and create attribute dependency lists
foreach (GameAttribute attr in attributes)
{
// check for valid script in the attribute and select it
string script;
if (attr.ScriptA.Length > 0 && attr.ScriptA != "0")
{
script = attr.ScriptA;
}
else if (attr.ScriptB.Length > 0 && attr.ScriptB != "0")
{
script = attr.ScriptB;
}
else
{
continue; // no valid script, done processing this attribute
}
// by default all scripts are not settable
// can be set to true if self-referring identifier is found
attr.ScriptedAndSettable = false;
// replace attribute references with GameAttributeMap lookups
// also record all attributes used by script into each attribute's dependency list
script = Regex.Replace(script, @"([A-Za-z_]\w*)(\.Agg)?(\#[A-Za-z_]\w*)?(?=[^\(\w]|\z)( \?)?",
(match) =>
{
// lookup attribute object
string identifierName = match.Groups[1].Value;
if (!attributeLookup.ContainsKey(identifierName))
{
throw new ScriptedAttributeInitializerError("invalid identifer parsed: " + identifierName);
}
GameAttribute identifier = attributeLookup[identifierName];
// key selection
int?key = null;
string keyString = "_key";
bool usesExplicitKey = false;
if (match.Groups[3].Success)
{
switch (match.Groups[3].Value.ToUpper())
{
case "#NONE": key = null; break;
case "#PHYSICAL": key = 0; break;
case "#FIRE": key = 1; break;
case "#LIGHTNING": key = 2; break;
case "#COLD": key = 3; break;
case "#POISON": key = 4; break;
case "#ARCANE": key = 5; break;
case "#HOLY": key = 6; break;
default:
throw new ScriptedAttributeInitializerError("error processing attribute script, invalid key in identifier: " + match.Groups[3].Value);
}
if (key == null)
{
keyString = "null";
}
else
{
keyString = key.ToString();
}
usesExplicitKey = true;
}
// add comparsion for int attributes that are directly used in an ?: expression.
string compare = "";
if (match.Groups[4].Success)
{
compare = identifier is GameAttributeI ? " > 0 ?" : " ?";
}
// handle self-referring lookup. example: Resource.Agg
if (match.Groups[2].Success)
{
attr.ScriptedAndSettable = true;
return("_map._RawGetAttribute(GameAttribute." + identifierName
+ ", " + keyString + ")" + compare);
}
// record dependency
if (identifier.Dependents == null)
{
identifier.Dependents = new List <GameAttributeDependency>();
}
identifier.Dependents.Add(new GameAttributeDependency(attr, key, usesExplicitKey, false));
// generate normal lookup
return("_map[GameAttribute." + identifierName + ", " + keyString + "]" + compare);
});
// transform function calls into C# equivalents
script = Regex.Replace(script, @"floor\(", "(float)Math.Floor(", RegexOptions.IgnoreCase);
script = Regex.Replace(script, @"max\(", "Math.Max(", RegexOptions.IgnoreCase);
script = Regex.Replace(script, @"min\(", "Math.Min(", RegexOptions.IgnoreCase);
script = Regex.Replace(script, @"pin\(", "ScriptedAttributeInitializer.Pin(", RegexOptions.IgnoreCase);
// add C# single-precision affix to decimal literals. example: 1.25 => 1.25f
script = Regex.Replace(script, @"\d+\.\d+", "$0f");
csharpScripts[attr] = script;
}
// generate and write final C# code to file
string sourcePathBase = Path.Combine(Path.GetTempPath(), "NullDScriptedAttributeFuncs");
using (StreamWriter fout = new StreamWriter(sourcePathBase + ".cs"))
{
fout.Write(
@"// This file was auto-generated by NullD class ScriptedAttributeInitializer
// It contains Funcs derived from GameAttribute.ScriptA/B scripts.
// Funcs will be assigned to their respective GameAttribute.ScriptFunc member.
using System;
using NullD.Net.GS.Message;
using NullD.Core.GS.Objects;
namespace NullD.Net.GS.Message.GeneratedCode
{
public class ScriptedAttributeFuncs
{
");
foreach (var scriptEntry in csharpScripts)
{
// select output type cast to ensure it matches attribute type
string castType = scriptEntry.Key is GameAttributeF ? "float" : "int";
// write out full Func static class field
fout.WriteLine(" public static Func<GameAttributeMap, int?, GameAttributeValue> {0} = (_map, _key) => new GameAttributeValue(({1})({2}));",
scriptEntry.Key.Name,
castType,
scriptEntry.Value);
}
fout.Write(
@" }
}
");
}
// compile code
var options = new CompilerParameters();
options.GenerateExecutable = false;
options.OutputAssembly = sourcePathBase + ".dll";
options.IncludeDebugInformation = true;
options.ReferencedAssemblies.Add(Assembly.GetExecutingAssembly().Location);
var results = new CSharpCodeProvider().CompileAssemblyFromFile(options, sourcePathBase + ".cs");
if (results.Errors.Count > 0)
{
StringBuilder emsg = new StringBuilder();
emsg.AppendLine("encountered errors compiling attribute funcs:");
foreach (var e in results.Errors)
{
emsg.AppendLine(e.ToString());
}
throw new ScriptedAttributeInitializerError(emsg.ToString());
}
// pull funcs from new assembly and assign them to their respective attributes
Type funcs = results.CompiledAssembly.GetType("NullD.Net.GS.Message.GeneratedCode.ScriptedAttributeFuncs");
foreach (var attr in csharpScripts.Keys)
{
attr.ScriptFunc = (Func <GameAttributeMap, int?, GameAttributeValue>)funcs
.GetField(attr.Name).GetValue(null);
}
}