A Bullet Problem That Makes No Sense!!! (DBPro)

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Message

Allanon Shadeslayer

17

Years of Service

User Offline

Joined: 28th Dec 2006

Location:

Posted: 1st Mar 2007 19:30

Link

Hi.

I'm making a tank game.

So, Naturally, I need bullet code.

Here's what I have so far

+ Code Snippet

rem making missiles
make object cube 16,10
make object cube 17,10
color object 16,rgb(255,0,0)
color object 17,rgb(255,0,0)

scale object 16,50,50,100
scale object 17,50,50,100

position object 16,1500,1500,-25
position object 17,1500,1500,-50

if returnkey()
position object 16,object position x(1),object position y(1)+40,object position z(1)
yrotate object 16,object angle y(1)
endif
if returnkey()
position object 16,object position x(1),object position y(1)+40,object position z(1)
yrotate object 16,object angle y(1)
endif

rem missile properties
if object position y(16)=object position y(1)+40 then move object 16,15
if object position y(17)=object position y(2)+40 then move object 17,15

Now, I thought this would work but it doesn't. For some reason when I fire the bullet moves the direction I want it to but when I move my tank at all the bullet just stops and I'm pretty sure I'm using the right axis.

Just in case, here's my entire code.

Rem Project: Tank Arena
Rem Created: 1/18/2007 3:34:29 PM

Rem ***** Main Source File *****

rem basic settings
hide mouse
sync on : sync rate 60
color backdrop rgb(0,0,0)
backdrop off

rem instructions menu and loading prompt
sync
print "Tank Arena: Controls"
print "Player 1 Controls:"
print "num pad 8=forward, num pad 5=reverse, num pad 4=turn left, num pad 6=turn right"
print "Player 2 Controls:"
print "W=forward, S=reverse, A=turn left, D=turn right"
print "Press ESCAPE to exit"
print "Press any key when ready."
sync
disable escapekey
wait key
backdrop on
sync : center text screen width()/2, screen height()/2,"Loading..." : sync
wait 3000
enable escapekey

rem loading media
load object "media\Warrior.x",1 : load object "media\Warrior.x",2 : load object "media\Wood Crate.x",8
load object "media\Wood Crate.x",9 : load object "media\Wood Crate.x",10 : load object "media\Wood Crate.x",11
load object "media\Oil-Drum.x",12 : load object "media\Oil-Drum.x",13 : load object "media\Oil-Drum.x",14
load object "media\Oil-Drum.x",15
load image "media\sandstone_T.bmp",1 : load image "media\bunker.bmp",2

rem making world
make matrix 1,3000,3000,1,1
prepare matrix texture 1,1,1,1

rem making building
make object cube 7,750
texture object 7,2

rem making missiles
make object cube 16,10
make object cube 17,10
color object 16,rgb(255,0,0)
color object 17,rgb(255,0,0)

rem creating boundary lines and collision spheres
make object cube 3,50
make object cube 4,50
make object cube 5,50
make object cube 6,50
hide object 3
hide object 4
hide object 5
hide object 6
make object sphere 18,125
make object sphere 19,125
hide object 18
hide object 19

rem adjusting size and orientation of models
scale object 1,50,50,50
xrotate object 1,-90
yrotate object 1,45
scale object 2,50,50,50
xrotate object 2,-90
yrotate object 2,-135
scale object 3,4800,50,50
scale object 4,4800,50,50
scale object 5,50,50,4800
scale object 6,50,50,4800
scale object 8,500,500,500
scale object 9,500,500,500
scale object 10,500,500,500
scale object 11,500,500,500
scale object 12,250,250,250
xrotate object 12,-90
scale object 13,250,250,250
xrotate object 13,-90
scale object 14,250,250,250
xrotate object 14,-90
scale object 15,250,250,250
xrotate object 15,-90
scale object 16,50,50,100
scale object 17,50,50,100

rem positioning
position object 1,425,0,425
position object 2,2575,0,2575
position object 3,1500,25,300
position object 4,1500,25,2700
position object 5,300,25,1500
position object 6,2700,25,1500
position object 7,1500,350,1500
position object 8,750,100,750
position object 9,2250,100,750
position object 10,750,100,2250
position object 11,2250,100,2250
position object 12,2250,0,1450
position object 13,2300,0,1500
position object 14,2250,0,1550
position object 15,2250,115,1500
position object 16,1500,1500,-25
position object 17,1500,1500,-50
position object 18,object position x(1),object position y(1)+25,object position z(1)
position object 19,object position x(2),object position y(2)+25,object position z(2)

rem making and editing cameras
make camera 1
set camera range 1,1,4000
set camera view 1,0,0,1024,384
set camera aspect 1,1.7
color backdrop 1,rgb(150,150,255)
position camera 1,object position x(1)-300,150,object position z(1)-300
point camera 1,object position x(1),object position y(1),object position z(1)
make camera 2
set camera range 2,1,4000
set camera view 2,0,384,1024,768
set camera aspect 2,1.7
color backdrop 2,rgb(150,150,255)
position camera 2,object position x(2)+300,150,object position z(2)+300
point camera 2,object position x(2),object position y(2),object position z(2)

rem main loop
do

rem setting up player 1 and player 2
Health_1=100
text 0,0,str$(Health_1)
if keystate(72) then move object down 1,5
if keystate(76) then move object up 1,5
if keystate(75) then yrotate object 1,object angle y(1)-2
if keystate(77) then yrotate object 1,object angle y(1)+2
if returnkey()
position object 16,object position x(1),object position y(1)+40,object position z(1)
yrotate object 16,object angle y(1)
endif
position object 18,object position x(1),object position y(1)+25,object position z(1)
Health_2=100
text 0,384,str$(Health_2)
if keystate(17) then move object down 2,5
if keystate(31) then move object up 2,5
if keystate(30) then yrotate object 2,object angle y(2)-2
if keystate(32) then yrotate object 2,object angle y(2)+2
if returnkey()
position object 16,object position x(1),object position y(1)+40,object position z(1)
yrotate object 16,object angle y(1)
endif
position object 19,object position x(2),object position y(2)+25,object position z(2)

rem setting camera to follow players
position camera 1,object position x(1)-300,150,object position z(1)-300
point camera 1,object position x(1),object position y(1),object position z(1)
position camera 2,object position x(2)+300,150,object position z(2)+300
point camera 2,object position x(2),object position y(2),object position z(2)

rem boundaries and physics
if object collision(1,2) then move object up 1,5 : move object up 2,5

for A=3 to 15

if object collision(18,A) and keystate(72) then move object up 1,5
if object collision(18,A) and keystate(76) then move object down 1,5
if object collision(19,A) and keystate(17) then move object up 2,5
if object collision(19,A) and keystate(31) then move object down 2,5

next A

rem missile properties
if object position y(16)=object position y(1)+40 then move object 16,15
if object position y(17)=object position y(2)+40 then move object 17,15

rem updating screen
sync

rem end loop
loop

+ Code Snippet

Rem Project: Tank Arena
Rem Created: 1/18/2007 3:34:29 PM

Rem ***** Main Source File *****

rem basic settings
hide mouse
sync on : sync rate 60
color backdrop rgb(0,0,0)
backdrop off

rem instructions menu and loading prompt
sync
print "Tank Arena: Controls"
print "Player 1 Controls:"
print "num pad 8=forward, num pad 5=reverse, num pad 4=turn left, num pad 6=turn right"
print "Player 2 Controls:"
print "W=forward, S=reverse, A=turn left, D=turn right"
print "Press ESCAPE to exit"
print "Press any key when ready."
sync
disable escapekey
wait key
backdrop on
sync : center text screen width()/2, screen height()/2,"Loading..." : sync
wait 3000
enable escapekey

rem loading media
load object "media\Warrior.x",1 : load object "media\Warrior.x",2 : load object "media\Wood Crate.x",8
load object "media\Wood Crate.x",9 : load object "media\Wood Crate.x",10 : load object "media\Wood Crate.x",11
load object "media\Oil-Drum.x",12 : load object "media\Oil-Drum.x",13 : load object "media\Oil-Drum.x",14
load object "media\Oil-Drum.x",15
load image "media\sandstone_T.bmp",1 : load image "media\bunker.bmp",2

rem making world
make matrix 1,3000,3000,1,1
prepare matrix texture 1,1,1,1

rem making building
make object cube 7,750
texture object 7,2

rem making missiles
make object cube 16,10
make object cube 17,10
color object 16,rgb(255,0,0)
color object 17,rgb(255,0,0)

rem creating boundary lines and collision spheres
make object cube 3,50
make object cube 4,50
make object cube 5,50
make object cube 6,50
hide object 3
hide object 4
hide object 5
hide object 6
make object sphere 18,125
make object sphere 19,125
hide object 18
hide object 19

rem adjusting size and orientation of models
scale object 1,50,50,50
xrotate object 1,-90
yrotate object 1,45
scale object 2,50,50,50
xrotate object 2,-90
yrotate object 2,-135
scale object 3,4800,50,50
scale object 4,4800,50,50
scale object 5,50,50,4800
scale object 6,50,50,4800
scale object 8,500,500,500
scale object 9,500,500,500
scale object 10,500,500,500
scale object 11,500,500,500
scale object 12,250,250,250
xrotate object 12,-90
scale object 13,250,250,250
xrotate object 13,-90
scale object 14,250,250,250
xrotate object 14,-90
scale object 15,250,250,250
xrotate object 15,-90
scale object 16,50,50,100
scale object 17,50,50,100

rem positioning
position object 1,425,0,425
position object 2,2575,0,2575
position object 3,1500,25,300
position object 4,1500,25,2700
position object 5,300,25,1500
position object 6,2700,25,1500
position object 7,1500,350,1500
position object 8,750,100,750
position object 9,2250,100,750
position object 10,750,100,2250
position object 11,2250,100,2250
position object 12,2250,0,1450
position object 13,2300,0,1500
position object 14,2250,0,1550
position object 15,2250,115,1500
position object 16,1500,1500,-25
position object 17,1500,1500,-50
position object 18,object position x(1),object position y(1)+25,object position z(1)
position object 19,object position x(2),object position y(2)+25,object position z(2)

rem making and editing cameras
make camera 1
set camera range 1,1,4000
set camera view 1,0,0,1024,384
set camera aspect 1,1.7
color backdrop 1,rgb(150,150,255)
position camera 1,object position x(1)-300,150,object position z(1)-300
point camera 1,object position x(1),object position y(1),object position z(1)
make camera 2
set camera range 2,1,4000
set camera view 2,0,384,1024,768
set camera aspect 2,1.7
color backdrop 2,rgb(150,150,255)
position camera 2,object position x(2)+300,150,object position z(2)+300
point camera 2,object position x(2),object position y(2),object position z(2)

rem main loop
do

rem setting up player 1 and player 2
Health_1=100
text 0,0,str$(Health_1)
if keystate(72) then move object down 1,5
if keystate(76) then move object up 1,5
if keystate(75) then yrotate object 1,object angle y(1)-2
if keystate(77) then yrotate object 1,object angle y(1)+2
if returnkey()
position object 16,object position x(1),object position y(1)+40,object position z(1)
yrotate object 16,object angle y(1)
endif
position object 18,object position x(1),object position y(1)+25,object position z(1)
Health_2=100
text 0,384,str$(Health_2)
if keystate(17) then move object down 2,5
if keystate(31) then move object up 2,5
if keystate(30) then yrotate object 2,object angle y(2)-2
if keystate(32) then yrotate object 2,object angle y(2)+2
if returnkey()
position object 16,object position x(1),object position y(1)+40,object position z(1)
yrotate object 16,object angle y(1)
endif
position object 19,object position x(2),object position y(2)+25,object position z(2)

rem setting camera to follow players
position camera 1,object position x(1)-300,150,object position z(1)-300
point camera 1,object position x(1),object position y(1),object position z(1)
position camera 2,object position x(2)+300,150,object position z(2)+300
point camera 2,object position x(2),object position y(2),object position z(2)

rem boundaries and physics
if object collision(1,2) then move object up 1,5 : move object up 2,5

for A=3 to 15

if object collision(18,A) and keystate(72) then move object up 1,5
if object collision(18,A) and keystate(76) then move object down 1,5
if object collision(19,A) and keystate(17) then move object up 2,5
if object collision(19,A) and keystate(31) then move object down 2,5

next A


rem missile properties
if object position y(16)=object position y(1)+40 then move object 16,15
if object position y(17)=object position y(2)+40 then move object 17,15

rem updating screen
sync

rem end loop
loop

If at first you don't succeed, lower your expectations.

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TDK

Retired Moderator

22

Years of Service

User Offline

Joined: 19th Nov 2002

Location: UK

Posted: 2nd Mar 2007 03:23 Edited at: 11th Mar 2007 19:57

Link

A few observations which may help you:

I'm sure you've been told this before, but another reminder...

Use indentation!

You also need to read up on procedures and use them.

This will make your code a lot easier to read and follow - especially if you want others to figure out what is wrong with your programs.

Then there's For..Next loops when creating objects.

+ Code Snippet

make object cube 3,50
make object cube 4,50
make object cube 5,50
make object cube 6,50
hide object 3
hide object 4
hide object 5
hide object 6

could be done with

+ Code Snippet

For N=3 To 6
  make object cube N,50
  hide object N
Next N

You use color backdrop rgb(0,0,0). Although you could have used color backdrop 0, on the next line you turn the backdrop off.

You shouldn't set up players 1 and 2 in the main loop. Their health values will be set to max 60 times per second!

As for your bullet problem, you appear to be basing the bullets position and rotation on other objects. You should have separate variables (or arrays if you want multiple bullets) to store the positions.

Take a look at my tutorial on 2D firing to see how this is done - the method is exactly the same for 3D, but with an added axis.

TDK_Man

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Allanon Shadeslayer

17

Years of Service

User Offline

Joined: 28th Dec 2006

Location:

Posted: 3rd Mar 2007 01:17

Link

Thank you. That's a lot of useful information that I will definitely use.

If at first you don't succeed, lower your expectations.

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Profile PM

Allanon Shadeslayer

17

Years of Service

User Offline

Joined: 28th Dec 2006

Location:

Posted: 11th Mar 2007 02:36

Link

Is this better?

Rem Project: Tank Arena
Rem Created: 1/18/2007 3:34:29 PM

Rem ***** Main Source File *****

rem opening
hide mouse
sync on : sync rate 60
color backdrop 0
backdrop off

rem instructions menu and loading prompt
gosub menu

rem loading media
gosub load

rem making world
  make matrix 1,3000,3000,1,1
  prepare matrix texture 1,1,1,1
  `making edifice
  make object cube 7,750
  texture object 7,2

rem creating boundary lines and collision spheres
gosub boundaries

rem making missiles
make object cube 16,17
make object cube 17,17
color object 16,rgb(255,0,0)
color object 17,rgb(255,0,0)

rem adjusting size and orientation of models
gosub scale

rem positioning
gosub position

rem making and editing cameras
gosub camera

rem health
health1=100
health2=100

rem main loop
do

rem health
  text 0,0,str$(health1)
  text 0,384,str$(health2)

rem setting up player 1 and player 2
  gosub players

rem setting camera to follow players
  position camera 1,object position x(1)-300,150,object position z(1)-300
  point camera 1,object position x(1),object position y(1),object position z(1)
  position camera 2,object position x(2)+300,150,object position z(2)+300
  point camera 2,object position x(2),object position y(2),object position z(2)

rem boundaries and physics
  if object collision(1,2) then move object up 1,5 : move object up 2,5

for c=3 to 15

if object collision(18,c) and keystate(72) then move object up 1,5
    if object collision(18,c) and keystate(76) then move object down 1,5
    if object collision(19,c) and keystate(17) then move object up 2,5
    if object collision(19,c) and keystate(31) then move object down 2,5

next c

rem missile properties
  if object position y(16)=object position y(1)+40 then move object 16,15
  if object position y(17)=object position y(2)+40 then move object 17,15

rem updating screen
  sync

rem end loop
loop

rem subroutines

boundaries:

for b=3 to 6

make object cube b,50
      hide object b

next b

`collision spheres
    make object sphere 18,125
    make object sphere 19,125
    hide object 18
    hide object 19
  return

camera:

for ca=1 to 2

make camera ca
      set camera range ca,1,4000
      set camera aspect ca,1.7
      color backdrop ca,rgb(150,150,255)

next ca

set camera view 1,0,0,1024,384 : set camera view 2,0,384,1024,768
    position camera 1,objposx1-300,150,objposz1-300
    point camera 1,objposx1,objposy1,objposz1
    position camera 2,objposx2+300,150,objposz2+300
    point camera 2,objposx2,objposy2,objposz2
  return

load:
    load object "media\Warrior.x",1 : load object "media\Warrior.x",2 : load object "media\Wood Crate.x",8
    load object "media\Wood Crate.x",9 : load object "media\Wood Crate.x",10
    load object "media\Wood Crate.x",11
    load object "media\Oil-Drum.x",12 : load object "media\Oil-Drum.x",13 : load object "media\Oil-Drum.x",14
    load object "media\Oil-Drum.x",15
    load image "media\sandstone_T.bmp",1 : load image "media\bunker.bmp",2
  return

menu:
    sync
    print "Tank Arena: Controls"
    print "Player 1 Controls:"
    print "num pad 8=forward, num pad 5=reverse, num pad 4=turn left, num pad 6=turn right"
    print "Player 2 Controls:"
    print "W=forward, S=reverse, A=turn left, D=turn right"
    print "Press ESCAPE to exit"
    print "Press any key when ready."
    sync
    disable escapekey
    wait key
    backdrop on
    sync : center text screen width()/2, screen height()/2,"Loading..." : sync
    wait 3000
    enable escapekey
  return

players:
    `player 1
    if keystate(72) then move object down 1,5
    if keystate(76) then move object up 1,5
    if keystate(75) then yrotate object 1,object angle y(1)-2
    if keystate(77) then yrotate object 1,object angle y(1)+2
    if returnkey()

position object 16,object position x(1),object position y(1)+40,object position z(1)
      yrotate object 16,object angle y(1)

endif

position object 18,object position x(1),object position y(1)+25,object position z(1)

`player 2
    if keystate(17) then move object down 2,5
    if keystate(31) then move object up 2,5
    if keystate(30) then yrotate object 2,object angle y(2)-2
    if keystate(32) then yrotate object 2,object angle y(2)+2
    if controlkey()

position object 17,object position x(2),object position y(2)+40,object position z(2)
      yrotate object 17,object angle y(2)

endif

position object 19,object position x(2),object position y(2)+25,object position z(2)
  return

position:
    `tanks
    position object 1,425,0,425 : position object 2,2575,0,2575
    `boundary lines
    position object 3,1500,25,300 : position object 4,1500,25,2700 : position object 5,300,25,1500
    position object 6,2700,25,1500
    `edifice and obstacles
    position object 7,1500,350,1500 : position object 8,750,100,750 : position object 9,2250,100,750
    position object 10,750,100,2250 : position object 11,2250,100,2250 : position object 12,2250,0,1450
    position object 13,2300,0,1500 : position object 14,2250,0,1550 : position object 15,2250,115,1500
    `missiles
    position object 16,1500,1500,-25 : position object 17,1500,1500,-50
    `collision spheres
    objposx1=object position x(1) : objposy1=object position y(1) : objposz1=object position z(1)
    objposx2=object position x(2) : objposy2=object position y(2) : objposz2=object position z(2)
    position object 18,objposx1,objposy1+25,objposz1 : position object 19,objposx2,objposy2+25,objposz2
  return

scale:
    `tanks
    scale object 1,50,50,50 : xrotate object 1,-90 : yrotate object 1,45
    scale object 2,50,50,50 : xrotate object 2,-90 : yrotate object 2,-135
    `boundary lines
    scale object 3,4800,50,50 : scale object 4,4800,50,50 : scale object 5,50,50,4800
    scale object 6,50,50,4800
    `obstacles
    scale object 8,500,500,500 : scale object 9,500,500,500 : scale object 10,500,500,500
    scale object 11,500,500,500 : scale object 12,250,250,250 : xrotate object 12,-90
    scale object 13,250,250,250 : xrotate object 13,-90 : scale object 14,250,250,250
    xrotate object 14,-90 : scale object 15,250,250,250 : xrotate object 15,-90
    `missiles
    scale object 16,50,50,100 : scale object 17,50,50,100
  return

+ Code Snippet

Rem Project: Tank Arena
Rem Created: 1/18/2007 3:34:29 PM

Rem ***** Main Source File *****

rem opening
hide mouse
sync on : sync rate 60
color backdrop 0
backdrop off

rem instructions menu and loading prompt
gosub menu

rem loading media
gosub load

rem making world
  make matrix 1,3000,3000,1,1
  prepare matrix texture 1,1,1,1
  `making edifice
  make object cube 7,750
  texture object 7,2

rem creating boundary lines and collision spheres
gosub boundaries

rem making missiles
make object cube 16,17
make object cube 17,17
color object 16,rgb(255,0,0)
color object 17,rgb(255,0,0)

rem adjusting size and orientation of models
gosub scale

rem positioning
gosub position

rem making and editing cameras
gosub camera

rem health
health1=100
health2=100

rem main loop
do

  rem health
  text 0,0,str$(health1)
  text 0,384,str$(health2)

  rem setting up player 1 and player 2
  gosub players

  rem setting camera to follow players
  position camera 1,object position x(1)-300,150,object position z(1)-300
  point camera 1,object position x(1),object position y(1),object position z(1)
  position camera 2,object position x(2)+300,150,object position z(2)+300
  point camera 2,object position x(2),object position y(2),object position z(2)

  rem boundaries and physics
  if object collision(1,2) then move object up 1,5 : move object up 2,5

  for c=3 to 15

    if object collision(18,c) and keystate(72) then move object up 1,5
    if object collision(18,c) and keystate(76) then move object down 1,5
    if object collision(19,c) and keystate(17) then move object up 2,5
    if object collision(19,c) and keystate(31) then move object down 2,5

  next c


  rem missile properties
  if object position y(16)=object position y(1)+40 then move object 16,15
  if object position y(17)=object position y(2)+40 then move object 17,15

  rem updating screen
  sync

rem end loop
loop

rem subroutines

  boundaries:

    for b=3 to 6

      make object cube b,50
      hide object b

    next b

    `collision spheres
    make object sphere 18,125
    make object sphere 19,125
    hide object 18
    hide object 19
  return

  camera:

    for ca=1 to 2

      make camera ca
      set camera range ca,1,4000
      set camera aspect ca,1.7
      color backdrop ca,rgb(150,150,255)

    next ca

    set camera view 1,0,0,1024,384 : set camera view 2,0,384,1024,768
    position camera 1,objposx1-300,150,objposz1-300
    point camera 1,objposx1,objposy1,objposz1
    position camera 2,objposx2+300,150,objposz2+300
    point camera 2,objposx2,objposy2,objposz2
  return

  load:
    load object "media\Warrior.x",1 : load object "media\Warrior.x",2 : load object "media\Wood Crate.x",8
    load object "media\Wood Crate.x",9 : load object "media\Wood Crate.x",10
    load object "media\Wood Crate.x",11
    load object "media\Oil-Drum.x",12 : load object "media\Oil-Drum.x",13 : load object "media\Oil-Drum.x",14
    load object "media\Oil-Drum.x",15
    load image "media\sandstone_T.bmp",1 : load image "media\bunker.bmp",2
  return

  menu:
    sync
    print "Tank Arena: Controls"
    print "Player 1 Controls:"
    print "num pad 8=forward, num pad 5=reverse, num pad 4=turn left, num pad 6=turn right"
    print "Player 2 Controls:"
    print "W=forward, S=reverse, A=turn left, D=turn right"
    print "Press ESCAPE to exit"
    print "Press any key when ready."
    sync
    disable escapekey
    wait key
    backdrop on
    sync : center text screen width()/2, screen height()/2,"Loading..." : sync
    wait 3000
    enable escapekey
  return

  players:
    `player 1
    if keystate(72) then move object down 1,5
    if keystate(76) then move object up 1,5
    if keystate(75) then yrotate object 1,object angle y(1)-2
    if keystate(77) then yrotate object 1,object angle y(1)+2
    if returnkey()

      position object 16,object position x(1),object position y(1)+40,object position z(1)
      yrotate object 16,object angle y(1)

    endif

    position object 18,object position x(1),object position y(1)+25,object position z(1)

    `player 2
    if keystate(17) then move object down 2,5
    if keystate(31) then move object up 2,5
    if keystate(30) then yrotate object 2,object angle y(2)-2
    if keystate(32) then yrotate object 2,object angle y(2)+2
    if controlkey()

      position object 17,object position x(2),object position y(2)+40,object position z(2)
      yrotate object 17,object angle y(2)

    endif

    position object 19,object position x(2),object position y(2)+25,object position z(2)
  return

  position:
    `tanks
    position object 1,425,0,425 : position object 2,2575,0,2575
    `boundary lines
    position object 3,1500,25,300 : position object 4,1500,25,2700 : position object 5,300,25,1500
    position object 6,2700,25,1500
    `edifice and obstacles
    position object 7,1500,350,1500 : position object 8,750,100,750 : position object 9,2250,100,750
    position object 10,750,100,2250 : position object 11,2250,100,2250 : position object 12,2250,0,1450
    position object 13,2300,0,1500 : position object 14,2250,0,1550 : position object 15,2250,115,1500
    `missiles
    position object 16,1500,1500,-25 : position object 17,1500,1500,-50
    `collision spheres
    objposx1=object position x(1) : objposy1=object position y(1) : objposz1=object position z(1)
    objposx2=object position x(2) : objposy2=object position y(2) : objposz2=object position z(2)
    position object 18,objposx1,objposy1+25,objposz1 : position object 19,objposx2,objposy2+25,objposz2
  return

  scale:
    `tanks
    scale object 1,50,50,50 : xrotate object 1,-90 : yrotate object 1,45
    scale object 2,50,50,50 : xrotate object 2,-90 : yrotate object 2,-135
    `boundary lines
    scale object 3,4800,50,50 : scale object 4,4800,50,50 : scale object 5,50,50,4800
    scale object 6,50,50,4800
    `obstacles
    scale object 8,500,500,500 : scale object 9,500,500,500 : scale object 10,500,500,500
    scale object 11,500,500,500 : scale object 12,250,250,250 : xrotate object 12,-90
    scale object 13,250,250,250 : xrotate object 13,-90 : scale object 14,250,250,250
    xrotate object 14,-90 : scale object 15,250,250,250 : xrotate object 15,-90
    `missiles
    scale object 16,50,50,100 : scale object 17,50,50,100
  return

If at first you don't succeed, lower your expectations.

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