Your Projects - Post and Critique

[XVicarious]

Yeah. I remember reading about pointers in C++, but never really had the chance to use them. And fyi I edited my previous post here.

[Michael_Lee]

Collision checking?  Do you mean making sure enemies never intersect?

If we keep the amount of enemies fairly low (under a hundred, probably), then you could just take a brute force method - randomly generate two numbers for X and Y coordinates, check those numbers against every other enemy's coordinates, then if the absolute difference is 7 or less, then either attempt select another random slot, or add/subtract the appropriate amount of numbers to get the enemies not to intersect.

Edit: You probably meant bullets - in that case, just use the same checks you did with variables, only because all of your data is in what is effectively a list, do the checks in a for loop.

[Quigibo]

Also, what Michael_Lee has shown you is accessing bytes in ram using pointers ex: {L1+5}.  However, bytes only allow you values between 0-255 (or -128 to 127 if you sign extend them with "sign{").  That's fine if this is just a "Screen X" and "Screen Y" since the numbers will never get that big anyway.  But if you need numbers that go higher than that, you have to use words which are 2 byte numbers.  This is how the regular Axe variables work.  That gives you values between 0-65535 which is much larger.  All you have to do to use them is add an ^r to the end of the closing bracket ex: {L1+5}^r  That would use both bytes {L1+5} and {L1+6} to hold the 2 byte number.

[XVicarious]

Collision checking?  Do you mean making sure enemies never intersect?

If we keep the amount of enemies fairly low (under a hundred, probably), then you could just take a brute force method - randomly generate two numbers for X and Y coordinates, check those numbers against every other enemy's coordinates, then if the absolute difference is 7 or less, then either attempt select another random slot, or add/subtract the appropriate amount of numbers to get the enemies not to intersect.

Edit: You probably meant bullets - in that case, just use the same checks you did with variables, only because all of your data is in what is effectively a list, do the checks in a for loop.

So since my current check is

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1	If ((A-4<=X)and(A+4>=X))and(B=Y)

i can just replace the variables I use for the enemy, with the loop, correct?

[Binder News]

Yep, I think. (I didn't read the rest of this)

[XVicarious]

Ahh ! I used the code for the Pt-On() and it displays one of those like messed up sprite things when you do something wrong lol. I had to modify the variables a tad, and made sure that i fixed all of them properly but still it happens! 

And I'm about to create a topic for this, so I'll link that in an edit so we don't spam up this topic too much.

[tincopper2]

Here's what I worked on for the past two days.  It's a 16 by 16 smoothscrolling movement engine.  Let me know what you think!

I also wrote a little Pic to Hex program.  Put the top left corner of the sprite in the top left corner of the graphscreen.  Then set 0 (for 8*8 ) or 1 (for 16*16 ) to T on the first line of the program and run it.  I used it to give me the 16*16 hex codes that I used in the movement engine.

@ztrumpet , How did you get the sprites to be 16x16? When I store a value into hex I only know how to do 8x8... but I can
pt-On(x,y,A)
pt-On(x+8,y,B)
pt-On(x,y+8,C)
pt-On(x+8,y+8,D)
Which essentially uses 4 sprites just to make one which feels like a waste... Is there a way to put this into one sprite?

[DJ Omnimaga]

You can use the Bitmap function, but I think it's even slower because the routine is written by Texas Instruments and is not as optimized.

Also welcome here , sadly ztrumpet isn't around anymore so if you need more details from an Axe expert you might have to wait for someone else's answer.

[squidgetx]

Woah, necro! (sort of)

Welcome to the forums, tincopper2.

I'm not ztrumpet, but I can tell you that if you want to use 16x16 sprites in pure Axe, you'll have to use 4 8x8 sprites...that's the only way to do it without an Axiom or assembly coding. (or, as dj mentioned, you can use the bitmap command but that sucks if you want to get any kind of reasonable speed)

There are probably quite a few 16x16 sprite routines floating around in assembly, you could probably find one relatively easily (although if you want clipping that's a different story...)

[tincopper2]

Woah, necro! (sort of)

Welcome to the forums, tincopper2.

I'm not ztrumpet, but I can tell you that if you want to use 16x16 sprites in pure Axe, you'll have to use 4 8x8 sprites...that's the only way to do it without an Axiom or assembly coding. (or, as dj mentioned, you can use the bitmap command but that sucks if you want to get any kind of reasonable speed)

There are probably quite a few 16x16 sprite routines floating around in assembly, you could probably find one relatively easily (although if you want clipping that's a different story...)

Holy mackeral! Fast reply! Btw, thanks.

[Builderboy]

You can use the Bitmap function, but I think it's even slower because the routine is written by Texas Instruments and is not as optimized.

Actually Axe got a new bitmap routine written for it that is much more functional and super fast I know if it is better than using 4 sprite calls, but it is nice and speedy if you have even larger moving images ^^

[squidgetx]

Oh nice

Note that the bitmap Y offset might be kinda weird (at least in my experience it's about 3 px off )

Edit: Never mind, that *shouldn't* be a problem

[GinDiamond]

I'm working on a roguelike game in Axe. Here's the current code (its really just an @ sign moving around at this point):

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

.MAZEGAME #ExprOn DiagnosticOff [3C409EA2A29E423C]->Pic1 ClrHome 0->X->Y Repeat getKey(15) If getKey(4)?Y>0 Y-- ElseIf getKey(1)?Y<56 Y++ ElseIf getKey(2)?X>0 X-- ElseIf getKey(3)?X<88 X++ End Lbl DP ClrDraw Pt-On(X,Y,Pic1) DispGraph End Return

How would I add walls/floor tiles? Like:

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1 2 3 4 5 6 7 8 9 10 11 12

################ #..............# #..............# #..............# #..............# #..............# #..............# #..............# #..............# #..............# ################

Any help please? Thanks!

[Darl181]

You'll want to do a tilemap. The tiles themselves are sprites.
For the sprites you'll want a sprite editor. There's a ton of those around here, take your pick
Tilemaps are kind of complicated if you're new to programming, but you can have a look around the tutorials and feel free to ask for help

[GinDiamond]

Thanks, Darl181!

Could I make a matrix and then somehow make certain sprites (Pic2 would be wall tiles, Pic3 would be floor tiles) print to the screen according to the matrix?