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DarkBASIC Professional Discussion / Strange error with types

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TheComet
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Posted: 23rd Apr 2011 19:22 Edited at: 23rd Apr 2011 19:25
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I just came across this very weird error... Here's part of the code that reproduces this error:



And here is the error after compiling:

Quote: "Could not find field "Pa" in type "player_type" at line 8"


Now what boggles my mind is that when I take the line with the if statement away, the error is gone



Any explanations?

It can not be the length of the type, because this one here works:



TheComet

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RiiDii
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Posted: 23rd Apr 2011 21:07
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I suspect it is a compiler bug that is reading the line as:

if Player.Pa thEn dFrame>1 then a=1

Since the word Then would be valid statement following the If statement. The compiler should take into account spacing, but it appears that it is not.

Recommendations:
1) Report this as a bug.
2) Temporary solution - replace the type with "EndFrame"
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Quel
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Posted: 23rd Apr 2011 21:59
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Why would you make a UDT out of a single variable?...

It is used for dim arrays, you shouldn't get any problems that way.

But the situation doesn't require types at all.

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Diggsey
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Posted: 23rd Apr 2011 22:07 Edited at: 23rd Apr 2011 22:08
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@Quel
What are you talking about? This is a good time to use UDTs. They are not just for arrays...

[b]
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TheComet
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Posted: 23rd Apr 2011 22:46 Edited at: 23rd Apr 2011 22:47
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@ Quel

The code above was only for demonstration purposes... Of course I wouldn't use a UDT for just 1 variable

They aren't only for arrays... They are usually used for structuring your program so you don't have tons of variables. Let's say you had a player, and an enemy, and wanted to store the positions of both. The inefficient way of doing it would be:



And the way with UDTs:



The beauty now is that I can go ahead and set up positions for any object I want. If I wanted to add a bullet, I'd just have to say global bullet as vec3. Same goes with arrays. If I want 20 birds, I'd say dim bird(19) as vec3. Much more efficient than typing it all out.

TheComet

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tiresius
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Posted: 23rd Apr 2011 23:10
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UDTs have a use as a single variable (or all in a "Global" container), and that is spell-checking. If you mistype a variable it doesn't care. Mistype part of a UDT and it will let you know.

I wish we had a strict/superstrict type clause like the BRL languages...


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Quel
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Posted: 23rd Apr 2011 23:50
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I know what UDTs are. I just never had the urge to use it for a single entity.

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Green Gandalf
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Posted: 24th Apr 2011 01:41 Edited at: 24th Apr 2011 01:41
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Well spotted RiiDii - I'm sure you're right. Here's the editor error trace:

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WLGfx
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Posted: 24th Apr 2011 03:54 Edited at: 24th Apr 2011 03:55
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Would it fix it temporarily if the 'then' statement was on a separate line?

@Riidii: Nice one...

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RiiDii
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Posted: 24th Apr 2011 18:41 Edited at: 24th Apr 2011 18:43
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Quote: "Would it fix it temporarily if the 'then' statement was on a separate line?"


No. I tried it. The cause is not related to the placement of the "Then" statement, but rather the statement "thEn" is part of the UDT name "PathEndFrame".
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TheComet
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Posted: 24th Apr 2011 22:05
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Thanks guys, I posted this on bug reports I changed it to PathFrameEnd, and that solved the problem.

TheComet

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Phaelax
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Posted: 24th Apr 2011 22:21
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Quote: "Of course I wouldn't use a UDT for just 1 variable"


I do. Let's me group things together and easier to manage.

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