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Author Topic: Axe Q&A -  (Read 59351 times) Bookmark and Share
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« Reply #1230 on: 17 December, 2011, 02:57:43 »
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Is there any way to "re-declare" an array? For example, doing "Data(0,0,0)->GDB0" at one point, then doing "Data(6,3,5)->GDB0" later? Or, after the array has been declared, would I need to do something like "6->{GDB0+0}:3->{GDB0+1}:5->{GDB0+2}" to change values?
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« Reply #1231 on: 17 December, 2011, 03:06:08 »
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How would I learn tilemapping/scrolling for a platformer? I don't know how to adapt the ones in the tutorials section to make it work. Huh?
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« Reply #1232 on: 17 December, 2011, 03:20:53 »
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Quote from: BlakPilar on 17 December, 2011, 02:57:43
Is there any way to "re-declare" an array? For example, doing "Data(0,0,0)->GDB0" at one point, then doing "Data(6,3,5)->GDB0" later? Or, after the array has been declared, would I need to do something like "6->{GDB0+0}:3->{GDB0+1}:5->{GDB0+2}" to change values?
If your program doesn't writeback, then this is okay. It would be much easier to store values to a free RAM space, then alter them there.
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« Reply #1233 on: 17 December, 2011, 04:10:40 »
+1
Quote from: leafiness0 on 17 December, 2011, 03:20:53
Quote from: BlakPilar on 17 December, 2011, 02:57:43
Is there any way to "re-declare" an array? For example, doing "Data(0,0,0)->GDB0" at one point, then doing "Data(6,3,5)->GDB0" later? Or, after the array has been declared, would I need to do something like "6->{GDB0+0}:3->{GDB0+1}:5->{GDB0+2}" to change values?
If your program doesn't writeback, then this is okay. It would be much easier to store values to a free RAM space, then alter them there.
Alternatively, you can store data to a variable instead of a constant and then your can re-assign pointers all you want.
« Last Edit: 17 December, 2011, 04:10:59 by Quigibo » Logged
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« Reply #1234 on: 17 December, 2011, 04:12:13 »
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Quote from: parser padwan on 17 December, 2011, 03:06:08
How would I learn tilemapping/scrolling for a platformer? I don't know how to adapt the ones in the tutorials section to make it work. Huh?
I found it difficult to follow Yunhua's tutorial Tongue
I learned it from aeTIos and butts.
But, I'll show you how it works.
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« Reply #1235 on: 17 December, 2011, 04:12:44 »
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allright! Cheesy
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« Reply #1236 on: 17 December, 2011, 04:19:39 »
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Quote from: leafiness0 on 17 December, 2011, 03:20:53
If your program doesn't writeback, then this is okay. It would be much easier to store values to a free RAM space, then alter them there.
Quote from: Quigibo on 17 December, 2011, 04:10:40
Alternatively, you can store data to a variable instead of a constant and then your can re-assign pointers all you want.
Ahh, thanks guys!
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« Reply #1237 on: 17 December, 2011, 19:48:45 »
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Quote from: Runer112 on 17 December, 2011, 02:55:41
That's one of the advantages of compiled languages. Larger source code does not mean larger compiled code. You can add line breaks and comments and long-named labels all you want; the compiled code will always be the same size.
Cool Smiley
Does the same apply for If <condition>:Stuff:End versus <condition>?stuff ?
I've noticed some things don't work in the latter, such as getKey(x) for the condition and Pt-***.
« Last Edit: 17 December, 2011, 19:49:08 by Darl181 » Logged



 
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« Reply #1238 on: 17 December, 2011, 19:49:25 »
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What does ? do?
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« Reply #1239 on: 17 December, 2011, 19:50:01 »
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It's basically a short version of If afaict, tho there's some differences apparently.
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« Reply #1240 on: 17 December, 2011, 19:50:50 »
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I am prety sure it is the same.
but can be used for other optimizations because it works inline.
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« Reply #1241 on: 17 December, 2011, 19:51:07 »
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*guess*
So

If getKey(2)
X--
End

Would be the same as

getKey(2)?X--

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« Reply #1242 on: 17 December, 2011, 19:53:23 »
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Quote from: epic7 on 17 December, 2011, 19:51:07
getKey(2)?X--
Evidently not, when I tried something like that it threw an error at compile-time. Undecided
« Last Edit: 17 December, 2011, 19:53:30 by Darl181 » Logged



 
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« Reply #1243 on: 17 December, 2011, 19:54:25 »
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Ok then, so there are some differences. Tongue
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« Reply #1244 on: 17 December, 2011, 19:56:22 »
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i think that is becasue X-- is a command, not a value.  Try x-1->x
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