Davaris
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Posts posted by Davaris
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This is my bad boy.
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This place really needs a delete post button.
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Don't worry.
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>Details
If you mean me, its a secret.
I don't want to say anything until I have something to show. I don't want to be one of those vaporware guys...
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Interesting. I thought LUA was just bare bones. I've never used it before, outside of following a few LWs tutes.
As for C# I like it almost as much as Python, because it has .NET and enforces a few rules to keep me out of trouble. I don't know if it will have the speed to do what I want to do yet, but I guess I'll find that out sometime this year.
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If the greedy lawyers come after me, I'll move to New Zealand.
New Zealand says no to software patents
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Python would be fine as a scripting language for programmers, as long as you never intend to give modders access to it because with it, they could do terrible things to a user's machine.
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Python really is enjoyable to use. So much so, that it got me over a long episode where I was burned out from programming (C++) for a couple of years.
I haven't used Python for game programming though, because I keep reading comments that it is too slow. However people are working on speeding it up:
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In other words: If you're worried so much about minor performance issues such as this one over development speed, have a look into C++ or C, which run faster but develop slower.
My chief concern is standards, so people can use libraries they have built up without having to maintain different versions for different engines. However if the speed difference is as great as claimed, then I'd think again.
As for C++, I've been there and done that and now I prefer languages that are easier and more enjoyable to use. Case in point, if Python wasn't so slow, I'd be using that instead of C#.
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I just looked up XNA and Vector3 is struct there as well.
Anyway as I said above, for fundamentals like Vector3, Point, string, etc, it might be an idea to see what the consensus is on the popular 3D engines using C#. As most programmers have built up libraries and game code, they won't want to maintain two versions if LWs C# is the odd man out.
Not that I am saying LW C# is the odd man out. The only ones I have checked is DirectX, Unity and XNA.
EDIT:
I just found this. Perhaps it is an argument for keeping Vector3 as a class?
http://dotnetperls.com/static-constructor
You want to determine the performance hit for static constructors in the C# programming language. Microsoft and many developers warn that static constructors on a type impose a substantial overhead. Static constructors are also called type initializers, because they refer to types, not instances. Here we test static constructors in the C# language and determine if they are useful.
=== Static constructor performance test in C# ===
Class 1: Has static constructor
Time: 3208 ms
Class 2: No static constructor
Time: 319 ms
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Other than that the actual code for the type will not change so unless you are seeing any performance problems using these types, changing them from classes to structs now is just premature optimisation.
I'm thinking more in terms of assumptions people make, when they're building their games. With pass by value, or pass by reference, you can make changes to pass by value, without altering the original value. But if its pass by reference, then you alter the source.
So if there is one standard used by other engines and we are the only ones doing something different, then it can isolate us - if you get my drift. Anyway I don't know how much of a big deal it is, when it comes to doing conversions. I guess it depends on how complex the game part of your engine is.
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Not from my experience. Unity seems to only be C# or Javascript (their own version of it)
http://unity3d.com/support/documentation/Manual/Plugins.html
Plugins - Pro only feature
Unity has extensive support for C, C++ or Objective-C based Plugins. Plugins will work in standalones only. They are disabled when building a Web Player for security reasons.
This is supposed to be pro only, but I have been told there is a way to do it with the free version.
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It doesn't matter what language it is, but class must be value type also.
Not in C#. See my quote about the difference between class and struct.
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How can they be the best of the best if they choose C#? With C++ you can have value type classes too, so there is no such limitation that classes can be only references.
But this is C# not C++. Also who are you referring to MS, or Unity? DirectX can be used in C++ or C#. Unity can be used in C++ and C#.
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There must be a reason why Unity and Microsoft chose structs over classes.
I just checked C# 3.0 Pocket Reference:
StructsA struct is similar to a class, with the following key differences:
• A struct is a value type, whereas a class is a reference type.
• A struct does not support inheritance (other than implicitly
deriving from object).
A struct can have all the members a class can, except:
• A parameterless constructor
• A finalizer
• Virtual members
A struct is used instead of a class when value type semantics
are desirable. Good examples of structs are numeric types,
where it is more natural for assignment to copy a value rather
than a reference. Because a struct is a value type, each
instance does not require instantiation of an object on the
heap. This can be important when creating many instances
of a type, for example, with an array.
At any rate you may want to investigate why they chose structs over classes, because MS and Unity hire the best of the best, so I assume there is a very good reason for why they both made the same decision.
Anyway its up to you guys. I just thought I'd point it out.
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I just wanted to ask why Vector3 a class instead of a struct? The other C# engines I have worked with (DirectX, Unity) make them structs.
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Have a look through the Tutorials Josh has made available. Look in the Support section just under the banner.
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IF anything was to change, it would be the ToString, not the Parse.
Which would lead us to:
public override string ToString() { return string.Format("{0},{1},{2}", this.X, this.Y, this.Z); }As long as it works in XML, that's fine by me. I am using what I assume is ToString to save and Parse when I'm loading.
This is how I'm using it:
// Saving
XElement entry_list = header.Element("Entries"); entry_list.Add(new XElement("Entry", new XElement("Key", entry.Key), new XElement("Value", entry.Value), new XElement("Type", entry.Value.GetType().Name)));// Loading
XElement key = x.Element("Key"); XElement value = x.Element("Value"); XElement type = x.Element("Type"); switch (type.Value) { case "String": mCurrSD.Put<string>(key.Value, (string)value.Value); break; case "Boolean": mCurrSD.Put<bool>(key.Value, bool.Parse(value.Value)); break; case "Int32": mCurrSD.Put<int>(key.Value, int.Parse(value.Value)); break; case "Single": mCurrSD.Put<float>(key.Value, float.Parse(value.Value)); break; case "Vector3": mCurrSD.Put<Leadwerks.Vector3>(key.Value, Leadwerks.Vector3.Parse(value.Value)); break; } -
public override string ToString() { return string.Format("X:{0} Y:{1} Z:{2}", this.X, this.Y, this.Z); } public static Vector3 Parse(string value) { string[] values = value.Split(','); return new Vector3(float.Parse(values[0]), float.Parse(values[1]), float.Parse(values[2])); }The Parse function above is looking for ',' which doesn't exist. Here is the fix:
public static Vector3 Parse(string value) { char[] delimiterChars = { 'X', 'Y', 'Z', ':', ' ' }; string[] values = value.Value.Split(delimiterChars, StringSplitOptions.RemoveEmptyEntries); return new Vector3(float.Parse(values[0]), float.Parse(values[1]), float.Parse(values[2])); } -
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I just noticed this function doesn't return null, if it fails to find a file. Is there another way to check if it succeeded or failed?
public static Mesh Load(string path) { return new Mesh(Core.LoadMesh(path, Entity.NullPointer)); } -
From what I have read, you can mark parts of the code to be non compliant. I don't know if it can still be used with these collections though.
http://www.devarticles.com/c/a/C-Sharp/Making-Your-Code-CLS-Compliant/
You can apply the CLSCompliant attribute on an assembly (or a program element) and have the compiler check if your code is CLS (Common Language System) compliant. This means it works properly when consumed by other .NET languages. For example, you can place the following attribute on your .NET AssemblyInfo.cs files:
[assembly: CLSCompliant(true)]
Some of the things the compiler checks:
Class and member names cannot differ only by case. For example, you can't have one property named Counter and another named counter. This is important for cross-language compatibility since VB .NET isn't case sensitive.
Overloaded class methods cannot differ only by out or ref parameter designations.
Publicly exposed members cannot start with an underscore ( _ ).
Operators can't be overloaded
Unsigned types can't be part of the public interface of a class
Unfortunately, although you can apply the CLSCompliant attribute in VB .NET, the VB .NET compiler doesn't check for CLS compliance. In VB.NET 2005, this has apparently been fixed.
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I'm using Wintellect's Power Collections for .NET
http://powercollections.codeplex.com/releases/view/6863
and am getting warning messages like:
Argument type 'Leadwerks.Vector3' is not CLS compliantwhenever I declare a Leadwerks type.
I found the cause is this line in Wintellect's algorithms file:
// Everything should be CLS compliant. [assembly: CLSCompliant(true)]
Does anyone know what the problem is? Is it an issue with Leadwerks itself, or is it the C# wrapper?
..lesson 1 and 2 together in action..
in Showcase
Posted
If I am understanding the differences correctly, Naughty Alien's system can also be used in games where a regular grid system is required for every map - I'm thinking of turn based war games.