Help with object collisions - GameCreators Forum

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Nenohum

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Posted: 5th Oct 2006 02:40

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I just started to use Dark Basic Classic after finally purchased it and i looked at some tutorials but i'm having serious problems. For some reason the computer keeps saying object does not exist at random times and i need help with object collisions. the code is attached

+ Code Snippet

sync on
sync rate 0
hide mouse

`make some interacting objects
make object sphere 1,50 : Color object 1,RGB(000,255,000)

make object sphere 2,50 : Color object 2,RGB(255,000,000)

position object 2,130,0,0

set object collision to spheres 2

make object box 3,100,100,5 : Position object 3,0,0,150

color object 3,RGB(000,150,150)

`make limb
make object cylinder 9999,100
rotate object 9999,90,0,0
scale object 9999,35,900,35
make mesh from object 1,9999
delete object 9999
add limb 1,1,1
offset limb 1,1,0,0,500
delete mesh 1

set object collision to boxes 9999

position camera 0,500,500 : Point camera 0,0,0

DO

col# = 0
`movement control

if upkey()=1 then move object 1,1
if downkey()=1 then move object 1,-1
if leftkey()=1 then turn object left 1,2
if rightkey()=1 then turn object right 1,2

`object collision
if object collision(2,9999)>0 then col# = 1

Print col#

sync

LOOP

thanks

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Sixty Squares

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Posted: 5th Oct 2006 03:51

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Okay, notice how here:

+ Code Snippet

delete object 9999
add limb 1,1,1
offset limb 1,1,0,0,500

you delete object 9999 because you made a mesh. Meshes and objects are separate, and when you delete an object you can't use it anymore. So, when you try to do this:

+ Code Snippet

set object collision to boxes 9999

and this:

+ Code Snippet

if object collision(2,9999)>0 then col# = 1

you can't because you already got rid of object 9999 using the DELETE OBJECT command. Delete object completely gets rid of an object, so you can't use it again. There's the error.

Ummm...

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Nenohum

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Posted: 6th Oct 2006 00:38

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thanks it works now

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Nenohum

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Posted: 6th Oct 2006 03:05

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But is there any dignified way to make what i want and still have the object collision. becuase if i delete the delete line it makes the object appear and i can hide that. But it doesn't do object collison because it is not he object. Do i have to change the collison to the limb? And if yes how?

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Nenohum

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Posted: 7th Oct 2006 02:54

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okay i have change it a bit. what i want to do now is what i did before. Like the cylinder moves with sphere. What sort of rotation or movement do i need . The new code is here

+ Code Snippet

sync on
sync rate 0
hide mouse

`make some interacting objects
make object cube 1,50 : Color object 1,RGB(000,255,000)

make object sphere 2,50 : Color object 2,RGB(255,000,000)

position object 2,130,0,0

make object box 3,100,100,5 : Position object 3,0,0,150

color object 3,RGB(000,150,150)

`make limb
make object cylinder 9999,100
rotate object 9999,90,0,0
scale object 9999,35,900,35



position camera 0,500,500 : Point camera 0,0,0

DO

`movement control

if upkey()=1 then move object 1,1
if downkey()=1 then move object 1,-1
if leftkey()=1 then turn object left 1,2
if rightkey()=1 then turn object right 1,2

x# = object position x(1)
z# = object position z(1)
y# = object position y(1)

Ax# = object angle x(1)
position object 9999,x#,y#,z#+500

sync

LOOP

really any help would be usefull

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Nenohum

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Posted: 7th Oct 2006 22:45

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sorry for all the repost but i have been workin on it. I would like to know if you can set object collision to limbs. also i changed the limb commands and i was wondering if what i did was a good idea.

+ Code Snippet

  
`make limb
make object cylinder 9999,100
rotate object 9999,90,0,0
scale object 9999,50,500,50
make mesh from object 1,9999
add limb 1,1,1
offset limb 1,1,0,0,300
glue object to limb 9999,1,1

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Nenohum

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Posted: 8th Oct 2006 21:03

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okay so i figured everything out but i'm back to the orginal question at the top of the thread. My object collision still doesn't work and it all the objects exist any suggestions.

+ Code Snippet

sync on
sync rate 0
hide mouse

`make some interacting objects
make object cube 1,50 : Color object 1,RGB(000,255,000)

make object sphere 2,50 : Color object 2,RGB(255,000,000)

set object collision on 2

position object 2,130,0,0

set object collision to spheres 2

make object box 3,100,100,5 : Position object 3,0,0,150

color object 3,RGB(000,150,150)

`make limb
make object cylinder 9999,100

rotate object 9999,90,0,0

scale object 9999,50,500,50

make mesh from object 1,9999

add limb 1,1,1

delete mesh 1

offset limb 1,1,0,0,300

glue object to limb 9999,1,1

set object collision on 9999

position camera 0,500,-500 : Point camera 0,0,0

DO

if upkey()=1 then move object 1,1
if downkey()=1 then move object 1,-1
if leftkey()=1 then turn object left 1,.7
if rightkey()=1 then turn object right 1,.7


`object collision
if object collision(9999,2)>0

delete object 2

endif

sync

LOOP

please respond

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Nenohum

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Location: In a galaxy far, far, away.....

Posted: 9th Oct 2006 06:10

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okay figured out last problem but how do i make the cylinder follow my player with every turn. some help would be much appreciated.

+ Code Snippet

sync on
sync rate 0
hide mouse

`make some interacting objects
make object cube 1,50 : Color object 1,RGB(000,255,000)

make object sphere 2,50 : Color object 2,RGB(255,000,000)

set object collision on 2

position object 2,130,0,0

set object collision to spheres 2

make object box 3,100,100,5 : Position object 3,0,0,150

color object 3,RGB(000,150,150)

`make limb
make object cylinder 9999,100

rotate object 9999,90,0,0

scale object 9999,50,500,50

position camera 0,500,-500 : Point camera 0,0,0

DO

`object collision


if upkey()=1 then move object 1,1
if downkey()=1 then move object 1,-1
if leftkey()=1 then turn object left 1,.7
if rightkey()=1 then turn object right 1,.7

x# = object position x(1)
y# = object position y(1)
z# = object position z(1)

ax# = object angle x(1)
ay# = object angle y(1)
az# = object angle z(1)

position object 9999,x#,y#,z#
rotate object 9999,90,ay#,az#

if object collision(9999,2)>0

delete object 2

endif


sync

LOOP

someone please respond

if con is the opposite of pro, than is congress the opposite of progress?

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Code Dragon

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Posted: 31st Oct 2006 00:27

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Ok, the program is crashing because once object object 2 has been deleted, the object collision function will crash because object 2 no longer exists.

Put this code above the if statement and add an endif below the other endif

+ Code Snippet

if object exist(2)

If you want to make the cylinder follow the player, use make mesh from object to get the cylinder mesh, delete the cylinder, and add a limb to the player with the cylinder mesh, put in an offset, then delete the mesh.

Confucius say click the link to become a master game developer.
http://www.dexterity.com/articles/

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