Monkey 2

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January 30, 2018 at 4:37 pm in reply to: Monkey 3d dead #13360

cocon

Participant

You can see already what is offered: monkey2\modules\mojo3d\tests.

However keep in mind that making a game is not all about the graphics, you will have to think of the code design and game design generally and then use the graphics in order to create the “VIEW” layer which will define how the game looks.

January 29, 2018 at 7:07 pm in reply to: m2libui – Libui wrapper (Cross-Platform Native UI) #13337

cocon

Participant

Hi, when I used C# for some applications I had to use this function: Application.EnableVisualStyles() in order to have visual styles. Here is something mentioned about this: https://stackoverflow.com/questions/4308503/how-to-enable-visual-styles-without-a-manifest. I think that libui wants to instruct the linker on using the manifest file:
https://github.com/andlabs/libui/search?p=1&q=WIN32&type=&utf8=%E2%9C%93

I see that the linux GUI depends on GTK and it needs the GTK source (#include <gtk/gtk.h>), perhaps this means GTK library will have to be included as well along with it’s dependencies (like cairo for graphics and others). If it brings too much weight to the module, perhaps for just this special occasion Linux can rely on shared libraries instead.

January 29, 2018 at 3:51 pm in reply to: m2stp – Simple text processing module #13332

cocon

Participant

I don’t know if it would be better roll with the formatting capabilities of the standard library, just to save effort. But any other than that, this code has lots of potential to be customized for further uses or be extended for more string processing capabilities, it acts also as an educational project.

January 27, 2018 at 8:31 pm in reply to: m2libui – Libui wrapper (Cross-Platform Native UI) #13288

cocon

Participant

Good finding!

Some information regarding on how Monkey2 builds stuff, there are two ways, one is to build-everything-from-source situation and the other is to include the native shared libraries which are distributed with the final application. Consider these example for more inspiration:
Example of having sources: monkey2\modules\chipmunk
Example of having shared libraries (which deals with the multiplatform libraries): monkey2\modules\openal

I don’t know about specifically the pros and cons of building either from source or from libraries. By default you would consider that building everything from source is the way to go, unless you literally can’t mess with the source such as dealing with protected (OS libraries) or proprietry (where you can’t use the source).

Regarding some of your notes from github…

DLL must be in Root dir (possible to integrate instead?)

For doing such integration, there are third party tools to help with that, however monkey has either one way or the other. Search for: “pack exe with dll together”, you should see tools like “ExeBundler” etc… But this choice would be more of a matter according to how people want to ship the application.

(Class uiControl) Should be a struct I guess? Is in C source…
But classes (like buttons etc.) can’t extend structs…

I don’t have enough knowledge about this but there various example how is done in the modules. Use AstroGrep (the application) and search these regular expressions, to see how to match a native datatype to the monkey datatype.
Class.+=
Struct.+=

Such an example can be this one: Class aiScene Extends Void=”const aiScene” (aiScene is a C struct in cexport.h)
Where you have Monkey2 declare a class, but map it to a native struct, sweeeeet!

January 27, 2018 at 1:21 pm in reply to: How do I get the size of an array in megabytes? #13281

cocon

Participant

I updated the example to include struct and classes.

Also testing the Monokai theme…

January 26, 2018 at 6:49 pm in reply to: deleting forum threads #13268

cocon

Participant

The pros and cons would have to be considered.

January 26, 2018 at 6:46 pm in reply to: What you guys coding? #13267

cocon

Participant

It looks good, runs smoothly too.

January 26, 2018 at 11:01 am in reply to: Simple Unit-Tests for Monkey2 #13256

cocon

Participant

Good one.

January 26, 2018 at 10:58 am in reply to: Loops: For…End is Allowed? #13255

cocon

Participant

Interesting, I did not know about it, switching to it.

January 26, 2018 at 10:47 am in reply to: WebCam Module #13254

cocon

Participant

Another choice would be OpenCV. From what I see for achieving such functionality, only a handful of commands would be required, which makes it a relatively feasible effort within a short period of time.

https://docs.opencv.org/3.0-alpha/modules/videoio/doc/reading_and_writing_video.html
https://docs.opencv.org/3.0-beta/doc/py_tutorials/py_gui/py_video_display/py_video_display.html

January 26, 2018 at 10:06 am in reply to: How do I get the size of an array in megabytes? #13253

cocon

Participant

#Import  "<std>"
#Import  "<libc>"
Using std..
Using libc

Function Main()
	' about the sizes
	
	' the size of a float
	Local vFloat:Float = 1.0
	Print("size of float is " + sizeof(vFloat)) ' this is 4
	' from now on the sizeof function can be wrapped inside the ArrayExtensions class
	' this is only for syntactic reasons of providing a streamlined API
	Print("size of float is " + ArrayExtensions.SizeInBytes(vFloat))
	
	Print("")
	
	' some disambiguation about array sizes
	Local aFloat:Float[] = New Float[] (1.0, 2.0, 4.0, 5.0, 10.0, 30.0)
	Print("size of the data type of the array is " + sizeof(aFloat)) 		' this is 4, it means the size of the datatype
	Print("size of the n-dimension of an array is " + aFloat.GetSize(0)) 	' this is 6,  it means the # of the elements in a dimension
	
	Print("")
	
	' calculating the size of the array like this byteSize * numberOfElements
	' in this case the result is 24 (which means 4bytes * 6elements)
	Print("size of float array is " + ArrayExtensions.SizeInBytes(aFloat))
	
	Print("")
	
	' finding the sizes of a struct or a class
	Local scolor := New SColor
	Local ccolor := New CColor
	Print("struct size is " + ArrayExtensions.SizeInBytes(scolor)) ' this is 4 (because 4fields * 1byte)
	Print("class size is " + ArrayExtensions.SizeInBytes(ccolor))  ' this is 4 again
	
	Print("")
	
	' testing arrays of a struct and a class
	Local asColor := New SColor[] (New SColor, New SColor, New SColor, New SColor)
	Local acColor := New CColor[] (New CColor, New CColor, New CColor, New CColor)
	Print("size of struct array " + ArrayExtensions.SizeInBytes(asColor)) ' it's 16
	Print("size of class array " + ArrayExtensions.SizeInBytes(acColor))  ' the same
End

' Built in types cannot be extended otherwise it would be implemented as an extension
' Struct @Array<T> Extension
Struct ArrayExtensions Abstract
	Function SizeInBytes<T>:Int(item_:T)
		Return sizeof(item_)
	End
	Function SizeInBytes<T>:Int(array_:T[])
		Return array_.Length * sizeof(array_)
	End
End

Struct SColor
	Field R:Byte
	Field G:Byte
	Field B:Byte
	Field A:Byte
End

Class CColor
	Field R:Byte
	Field G:Byte
	Field B:Byte
	Field A:Byte
End

#Import "<std>"

#Import "<libc>"

Using std..

Using libc

Function Main()

' about the sizes

' the size of a float

Local vFloat:Float = 1.0

Print("size of float is " + sizeof(vFloat)) ' this is 4

' from now on the sizeof function can be wrapped inside the ArrayExtensions class

' this is only for syntactic reasons of providing a streamlined API

Print("size of float is " + ArrayExtensions.SizeInBytes(vFloat))

Print("")

' some disambiguation about array sizes

Local aFloat:Float[] = New Float[] (1.0, 2.0, 4.0, 5.0, 10.0, 30.0)

Print("size of the data type of the array is " + sizeof(aFloat)) ' this is 4, it means the size of the datatype

Print("size of the n-dimension of an array is " + aFloat.GetSize(0)) ' this is 6, it means the # of the elements in a dimension

Print("")

' calculating the size of the array like this byteSize * numberOfElements

' in this case the result is 24 (which means 4bytes * 6elements)

Print("size of float array is " + ArrayExtensions.SizeInBytes(aFloat))

Print("")

' finding the sizes of a struct or a class

Local scolor := New SColor

Local ccolor := New CColor

Print("struct size is " + ArrayExtensions.SizeInBytes(scolor)) ' this is 4 (because 4fields * 1byte)

Print("class size is " + ArrayExtensions.SizeInBytes(ccolor)) ' this is 4 again

Print("")

' testing arrays of a struct and a class

Local asColor := New SColor[] (New SColor, New SColor, New SColor, New SColor)

Local acColor := New CColor[] (New CColor, New CColor, New CColor, New CColor)

Print("size of struct array " + ArrayExtensions.SizeInBytes(asColor)) ' it's 16

Print("size of class array " + ArrayExtensions.SizeInBytes(acColor)) ' the same

End

' Built in types cannot be extended otherwise it would be implemented as an extension

' Struct @Array<T> Extension

Struct ArrayExtensions Abstract

Function SizeInBytes<T>:Int(item_:T)

Return sizeof(item_)

End

Function SizeInBytes<T>:Int(array_:T[])

Return array_.Length * sizeof(array_)

End

Struct SColor

Field R:Byte

Field G:Byte

Field B:Byte

Field A:Byte

End

Class CColor

Field R:Byte

Field G:Byte

Field B:Byte

Field A:Byte

End

January 25, 2018 at 6:54 pm in reply to: One way platform collision? #13230

cocon

Participant

Thanks Pakz for posting it, this will worth the study.

Nerobot, perhaps for full physics capabilities the chipmunk will be better. Or perhaps a combination of custom arcade physics and real physics, would produce very interesting results. There is something weird in arcade physics that are very useful and efficient. I had tried many tests in Processing Box2D with hacks and tuning to achieve that arcade feeling, and not even close enough to the result needed.

Also I have seen earlier that Diddy2 framework has a platform example in the works, check it out or ask TheRevils for more information.

January 23, 2018 at 4:42 pm in reply to: canvas.Rotation vs Trig function rotation #13178

cocon

Participant

I found a third way of inverting the Y axis. However visually it would not make sense because it will turn graphics upside down. But if you take this concept and perform the transformations using Matrix object the calculations will be applied only to values.

#Import  "<std>"
#Import  "<mojo>"
Using std..
Using mojo..
 
Class MyWindow Extends Window
	Field angle:Double = 0
	Field stp:Double = Pi/180.0
	
	Method New()
		Super.New("",800,600)
	End
 
	Method OnRender(canvas:Canvas) Override
		App.RequestRender()
		
		canvas.PushMatrix()
		canvas.Translate(200,200)
		canvas.DrawText(angle + "", 0, 0)
		canvas.Rotate(angle)
		canvas.DrawLine(0,0,100,0)
		canvas.PopMatrix()
		
		canvas.PushMatrix()
		canvas.Translate(500,200)
		canvas.DrawText(angle + "", 0, 0)
		canvas.DrawLine(0,0,Cos(angle)*100, -Sin(angle)*100)
		canvas.PopMatrix()
		
		canvas.PushMatrix()
		canvas.Translate(250,400)
		canvas.DrawText(angle + "", 0, 0)
		canvas.Scale(1, -1)
		canvas.DrawLine(0,0,Cos(angle)*100, Sin(angle)*100)
		canvas.PopMatrix()
		
		angle+=stp
		If angle > TwoPi
			angle-=TwoPi
		End
			
	End
	
End
 
Function Main()
	New AppInstance
	New MyWindow
	App.Run()
End

#Import "<std>"

#Import "<mojo>"

Using std..

Using mojo..

Class MyWindow Extends Window

Field angle:Double = 0

Field stp:Double = Pi/180.0

Method New()

Super.New("",800,600)

End

Method OnRender(canvas:Canvas) Override

App.RequestRender()

canvas.PushMatrix()

canvas.Translate(200,200)

canvas.DrawText(angle + "", 0, 0)

canvas.Rotate(angle)

canvas.DrawLine(0,0,100,0)

canvas.PopMatrix()

canvas.PushMatrix()

canvas.Translate(500,200)

canvas.DrawText(angle + "", 0, 0)

canvas.DrawLine(0,0,Cos(angle)*100, -Sin(angle)*100)

canvas.PopMatrix()

canvas.PushMatrix()

canvas.Translate(250,400)

canvas.DrawText(angle + "", 0, 0)

canvas.Scale(1, -1)

canvas.DrawLine(0,0,Cos(angle)*100, Sin(angle)*100)

canvas.PopMatrix()

angle+=stp

If angle > TwoPi

angle-=TwoPi

End

Function Main()

New AppInstance

New MyWindow

App.Run()

End

January 22, 2018 at 12:37 pm in reply to: derived class as argument for base class and other rules for inheritance #13166

cocon

Participant

I updated the previous post to include the code sample.

January 21, 2018 at 11:54 am in reply to: derived class as argument for base class and other rules for inheritance #13141

cocon

Participant

This one seems to have a link to an object instance somewhere in memory, but the displayed value is Null.

Class A
End
 
Class B Extends A
End
	 
Function Main()
	Local a := New A
	Local b := Cast<B>(a)
	Print(Typeof(b) = Typeof<Object>)
	Print(b = Null)
End

Class A

End

Class B Extends A

End

Function Main()

Local a := New A

Local b := Cast<B>(a)

Print(Typeof(b) = Typeof<Object>)

Print(b = Null)

End

However trying overloading the To operator makes the program behave correctly.

Class A
	Method To:B()
		Local b := New B
		b.b = Self.a
		Return a
	End

Class B
Method To:A()
	Local a := New A
	a.a = Self.b
	Return a
End

Class A

Method To:B()

Local b := New B

b.b = Self.a

Return a

End

Class B

Method To:A()

Local a := New A

a.a = Self.b

Return a

End

However I know that the point of the post is to stress test the compiler (I am not trying to patch the code example). But other than that you would consider that as a programming practice, super-casting is always ambiguous, because most of the times you can’t be sure how the derived type translates to their parent.

As a point of reference in C# language this operation is not permitted. So perhaps Monkey would introduce the same restriction, to promote more formal and strict habits.

class A
{
}

class B : A
{
}

class MainClass
{
	public static void Main(string[] args)
	{
		var a = new A();
		var b = (B)a; // <-- This won't happen...
		// System.InvalidCastException has been thrown
		// Unable to cast object of type 'TestSuperCasting.A' to type 'TestSuperCasting.B'.
	}
}

class A

{

}

class B : A

{

}

class MainClass

{

public static void Main(string[] args)

{

var a = new A();

var b = (B)a; // <-- This won't happen...

// System.InvalidCastException has been thrown

// Unable to cast object of type 'TestSuperCasting.A' to type 'TestSuperCasting.B'.

}

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cocon

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