So, I’m making Space Invaders for my TI-84+, OS 2.55, compiling to doors, and I’ve found a bug I can’t figure out how to fix…
Whenever I exit the program (clear or quit), the calculator crashes and performs a RAM clear. If I don’t use the interrupt, it works just fine, but I know the interrupt isn’t the problem. It’s the function the interrupt is running, Tick(), but I can’t figure out what’s wrong with it…
I believe it’s something about the part where I update the invaders positions, as it worked fine before I added that. But I can’t find a single thing wrong with it.
Could I please have some help?
Here’s my source code (god I wish we could attach files)

SourceCoder 3 (thetaSPCINVD) wrote:
:.SPACINVD Space Invaders
:
:#Icon(00005E806D8033007F8052B000300830043008000400003000FC01FE01FE01FE)
:DiagnosticOff
:
:.Ship
:[000000187EFFFFFF]->Pic0Ship
:
:.Shields
:[0000007FFFFCF0E0]->Pic0Shld
:[000000FEFF3F0F07]
:[0000007F00FCF0E0]
:[000000FE003F0F07]
:[0000007F00FC00E0]
:[000000FE003F0007]
:
:.Aliens
:[000000BDDB66FFA5]->Pic0Alen
:[0000003C7EDBE7BD]
:
:.Lasers
:[0000000018181818]->Pic0Lasr
:[0000000008100810]
:[0000000010081008]
:
:.Shields map
:Data(1,1,1)->GDB0
:1->{GDB0}->{1+GDB0}->{2+GDB0}
:
:.Alien position
:Data(8,20,32,44,56,68,80)->GDB0X
:Data(2,10,18,26)->GDB0Y
:
:.Variable RAM
:|E9872->->^^oVR
:
:.Vars
:^^oVR->->^^oShipX+2->^^oXVel+2->->^^oShipLaser+2->->^^oLaserX+2->->^^oLaserY+2->->^^oCollision+2->->^^oAlienDir+2->->^^oAlienX
:0->XVel->ShipLaser->LaserX->LaserY->Collision->AlienX+1->AlienDir+43->ShipX
:0->theta->T->F
:
:fnInt(Tick,6)
:
:.Game loop
:Repeat getKey(15)??getKey(55)
: Input()
: Move()
: Fix()
: Draw()
:
: DispGraphClrDraw
:End
:
:.Fun\ctions
:Lbl Input
:.Move
:getKey(3)-getKey(2)->XVel
:
:.Laser
:If getKey(54)
: ShipFire()
:End
:Return
:
:Lbl Move
:If theta=2
: ShipX+XVel->ShipX:0->theta
: Else
: theta++
:End
:
:If ShipX>99
: 0->ShipX
:End
:
:If ShipX>88
: 88->ShipX
:End
:
:If ShipLaser?theta=1
: LaserY--
:End
:
:If LaserY<<~7
: 0->ShipLaser
:End
:Return
:
:Lbl ShipFire
:!If ShipLaser
: 1->ShipLaser
: ShipX->LaserX
: 56->LaserY
:End
:Return
:
:Lbl Fix
:.Laser
:For(I,0,2)
: Collide(I*32+3,47,I*32+21,49,LaserX,LaserY)
: If Collision?{I+GDB0}?ShipLaser
: 0->Collision
: 0->ShipLaser
:
: !If {I+GDB0}>2??{I+GDB0}==0
: {I+GDB0}++
: Else
: 0->{I+GDB0}
: End
: End
:End
:0->Collision
:Return
:
:Lbl Collide
:If [r5]>[r1]?[r5]<[r3]?[r6]>[r2]?[r6]<[r4]
: 1->Collision
: Else
: 0->Collision
:End
:Return
:
:Lbl Draw
:.Ship
:Pt-On(ShipX,56,Pic0Ship)
:
:.Laser
:If ShipLaser
: Pt-On(LaserX,LaserY,Pic0Lasr)
:End
:
:.Shields
:For(I,0,2)
: If {I+GDB0}
: Pt-On(I*32+8,48,{I+GDB0}-1*16+Pic0Shld)
: Pt-On(I*32+16,48,{I+GDB0}-1*16+Pic0Shld+8)
: End
:End
:
:.Aliens
:For(Y,0,3)
: For(X,0,6)
:
: Pt-On(AlienX+{X+GDB0X},{Y+GDB0Y},F*8+Pic0Alen)
: If AlienX+{X+GDB0X}=88:~1->AlienDir:End
: If AlienX+{X+GDB0X}=0:1->AlienDir:End
: End
:End
:
:Return
:
:Lbl Tick
:T++
:
:If T=100
: If F
: 0->F
: Else
: 1->F
: End
: 0->T
: AlienX+AlienDir->AlienX
:End
:
:Return
:
:LnReg^^r
:ClrHome
  
Register to Join the Conversation
Have your own thoughts to add to this or any other topic? Want to ask a question, offer a suggestion, share your own programs and projects, upload a file to the file archives, get help with calculator and computer programming, or simply chat with like-minded coders and tech and calculator enthusiasts via the site-wide AJAX SAX widget? Registration for a free Cemetech account only takes a minute.

» Go to Registration page
Page 1 of 1
» All times are UTC - 5 Hours
 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

 

Advertisement