[Gambas-user] Arrays of Structs

[Rolf-Werner Eilert]

Thought so :)

Am 30.11.2016 16:03, schrieb Fabien Bodard:
> no
>
> 2016-11-30 15:46 GMT+01:00 Rolf-Werner Eilert <eilert-sprachen at ...221...>:
>> Would this be possible?
>>
>> Static Private WorldMap[100, 100] As New MapObject
>>
>>
>> or in a similar way... Just ask because I tend to use New in the first
>> declaration line if possible.
>>
>> Regards
>> Rolf
>>
>> Am 30.11.2016 07:27, schrieb nando_f at ...951...:
>>> I use structs to write binary to a file in struct order.
>>> Nice and easy.
>>> Not so easy with a class.
>>>
>>> Your example is possible.  I have done similar.
>>>
>>> The STRUCT only defines the structure...it doesn't create the memory allocation.
>>> Static Private WorldMap[100, 100] As MapObject  just defines arrays to point to objects.
>>> You need to run code to actually create new objects at each array element.
>>> hint:
>>> Loop  x
>>>    Loop  y
>>>      [x][y] = new MapObject  'the new actually creates a memory allocation for it.
>>>
>>> -Fernando
>>>
>>> --
>>> Open WebMail Project (http://openwebmail.org)
>>>
>>>
>>> ---------- Original Message -----------
>>> From: Tony Morehen <tmorehen at ...3602...>
>>> To: gambas-user at lists.sourceforge.net
>>> Sent: Tue, 29 Nov 2016 15:29:03 -0500
>>> Subject: Re: [Gambas-user] Arrays of Structs
>>>
>>>> I may just be responding to a typo but your struct is named MapObjec
>>>> while the code using it refers to MapObject.
>>>>
>>>> On 28/11/16 10:40 PM, Cam Era wrote:
>>>>> I expect I'm trying to do something that's not possible with Gambas, but
>>>>> I'll ask this anyway.
>>>>>
>>>>> I'm trying to create an n x n array of a STRUCT which itself contains an
>>>>> array of type STRUCT.
>>>>>
>>>>> I have this declaration:
>>>>>
>>>>>        Public Struct MapObjec
>>>>>          xPos As Integer
>>>>>          yPos As Integer
>>>>>          ObjectType As Integer
>>>>>          isVisible As Boolean
>>>>>          ObjectPicture As Picture
>>>>>        End Struct
>>>>>
>>>>>        Public Struct MapRoom
>>>>>          MapObjects[50] As MapObject
>>>>>        End Struct
>>>>>
>>>>>        Static Private WorldMap[100, 100] As MapObject
>>>>>
>>>>>
>>>>> and this code:
>>>>>
>>>>>        WorldMap[5, 10].MapObjects.yPos = 100
>>>>>
>>>>>
>>>>> which generates a "NULL object" error.
>>>>>
>>>>> Any pointers as to whether this is possible and if so, how?
>>>>>
>>>>>
>>>>> Cheers
>>>>>
>>>>> -- Cam
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