How do I get the size of an array in megabytes?

[AmonParticipant]

How do I get the size of an array in megabytes?

[therevillsParticipant]

It’ll depend on the objects stored in the array…

[coconParticipant]

Monkey

#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

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#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

[AmonParticipant]

Cool, thank you, Cocon. That’ll do lovely.

[therevillsParticipant]

Very nice Cocon, didnt know you could do that in MX2!

Does it work with an array of objects? I’ll have to check it out!

Also Amon, why did you want to know this?

[AmonParticipant]

Heya. The game I’m making is a platform game but a bit like an endless running game. The level scrolls downwards and you have to keep jumping up, destroying enemies etc. till you get to the top where you face the final boss. I noticed that there was about an eight seconds delay when switching to my game screen so I thought it must be the level array but I had no idea how to test its size to see if that was in fact, causing the delay. Thanks to Cocon’s code I found it was the level array.  I split the array into smaller chunk arrays and now the loading is less than a second.

[coconParticipant]

I updated the example to include struct and classes.

Also testing the Monokai theme…

[AmonParticipant]

Pretty cool. Thanks for the updates. This is now archived as must have MX2 code.

Thank you, Cocon.

[Author]

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