Types - finding a particular one
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| Suppose I have 30 aliens on the screen - all the same except for their x, y position and they are defined as a type. Is there any way of getting, say, the 17th alien created to drop a bomb (for example) without having to Loop through all those created until a count reaches 17 (using the FOR .... EACH command) I've tried attaching a number within the Type itself: Type alien Field x,y ;The x and y coords Field count ;alien number End Type but can't see how this will help. Thanks for any help. |
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| The main drawback of linked lists is the fact that you can't go straight to a particular item but have to iterate through the whole list to find the one you're looking for so I'm afraid you're out of luck. This article over at blitzcoder, Definitive Guide to Types, may help you with your problem. Scroll down to the section titled: Other type commands: 'Insert', 'Before', 'After', 'First', 'Last' and 'Delete' |
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| Make an array (using Dim)of your types an reference them by an index number (instead of using a loop with Each) as follows: Don't forget to free them all at the end. Type TheType Field A% Field B$ End Type MAX_TYPES = 10 Dim Types.TheType(MAX_TYPES) For i = 0 To MAX_TYPES-1 Types(i) = New TheType Next Types(3)\B = "hello" Notify Types(3)\B |
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| Thanks for the reply - can't believe I didn't think of that !! - Thanks very much Mr Alien |
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| No problemo earthling. |
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