Coding Challenge

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Coding Challenge

Boba Foxx (guest) 02 Feb 2013 01:04

It's been a while since there's been a sizable competition around here, so I decided to make one. _{(Plus, I just got my laptop back from routine inspections and it's been a while since I posted.)}
So, here's the challenge:
Make a program (or series of programs) that does the following:

• can move a character around the screen
• Either the map scrolls, or the map loads a new screen when you hit the edge.

Keep in mind, it doesn't have to have any actual content. Just make some maps where screen one is all 1's, and so on.
It can be on either the graph screen or the home screen, it doesn't matter.

Bonus:

• The engine tests the space you're about to move to to see if you can move there. How, I'll let you decide.

At the end of this, if I'm able to, then I'll upload my version of this, which is a mostly finished game engine that I spent roughly 6 months on before forgetting most of the code.

_{Yes, this is essentially making a game engine. Be creative!}

Re: Coding Challenge

Mr Dino 02 Feb 2013 02:02

PLEASE PLEASE PLEASE allow us 4 ASM opcodes - to shift the screen up/down/left/right. Please. Scrolling the screen is horrendously slow in BASIC.

Boba Foxx (guest) 02 Feb 2013 02:57

Yeah, I probably should have mentioned that. There's a max of 20000 bytes total and 8 programs, 5 of which can be assembly programs.
I'd like to have the main thing be in basic, so don't go write the whole thing in assembly (Xeda :p)

And really, only scrolling them is slow, but loading a new screen isn't really. I made mine use lists which can be archived/unarchived separately, and they load pretty fast, too (around .65 seconds)

stefan bauwens 02 Feb 2013 18:08

Can it be 68k basic as well(and can I use matrices)?
Also, must I write it oncalc and upload it, or may I just post the source here?

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סטיבן

Boba Foxx (guest) 02 Feb 2013 18:52

The problem I have with that is that I have no such way of testing it :/
If you use an emulator or screen recorder and then you post the recording, I'd be fine with that.

Re: Coding Challenge

Xeda Elnara 03 Feb 2013 00:19

Darn, I can't do all assembly :P I need something to distract me for a little bit, though, so I will see what I can come up with :)

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Z80 Assembly>English>TI-BASIC>Python>French>C>0

Re: Coding Challenge

Xeda Elnara 03 Feb 2013 01:48

Darn, TI-Connect isn't working so I have to type up my code:

DelVar IDelVar BDelVar C32→W
16→H
1→E
1→F
Repeat A=45
If not(I
Then
":
For(A,0,7
Ans+sub(Str1,W(B+A)+1+C,16
End
Output(1,1,sub(Ans,2,128
End
1→I
Output(E+1,F+1,"π
Repeat A
getKey→A
End
min(7,max(0,E+(A=34)-(A=25→G
min(15,max(0,F+(A=26)-(A=24
If Ans≠F or G≠E
Then
If " "=sub(Str1,W(B+G)+C+Ans+1,1
Then
Output(E+1,F+1,"      ;a single space is here
Ans→F
G→E
If F=2
Then
DelVar IC-1
If Ans≥0
Then
Ans→C
F+1→F
End
End
If F=13
Then
DelVar IC+1
If W-16>Ans
Then
Ans→C
F-1→F
End
End
If E=2
Then
DelVar IB-1
If Ans≥0
Then
Ans→B
E+1→E
End
End
If E=5
Then
DelVar IB+1
If H-8>Ans
Then
Ans→B
E-1→E
End
End
End
End
End

Hopefully I didn't make any mistakes, but it features:

• Movable sprite (the pi symbol)
• Collision detection (you can only move to empty spaces)
• Scrolling map (that version handles a 16x32 map, just change W and H)
• The map scrolls before you get to the boundaries unless you are close to the edge of the map.
• It is all on the homescreen.

The map is stored in Str1, by the way. Here is what it looks like.

I wouldn't call it fast, but it is usable.

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Z80 Assembly>English>TI-BASIC>Python>French>C>0

Boba Foxx (guest) 03 Feb 2013 02:46

I'll get around to putting this on my calc tomorrow and testing.