NG collision aint easy to use!!!................Or.............is it just me?

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The Nerd

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Posted: 2nd Jan 2005 05:44

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Hi.

I downloaded the NG collision demo today.
i Tried the examples and the collisions are very good!

but when it comes to use it in you OWN program i cant even figure out how to make an object moving!!!

And the manual aint good either i simply dont understand how to use NG in you own programs.

The Nerd

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Lost in Thought

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Posted: 2nd Jan 2005 06:20

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It is indeed very, very easy to use. The manuals tell you all you need to know when you compare the command usage and explainations with the small but effective example codes they give you.
Basically with NGC you have a certain layout that works with almost any code. It is formatted like this.

delcare constants for making NGC easier to read
turn sync on and set sync rate
start collision system (StartCollisionPRO)
start debug mode (if developing)
set exclusive mode for replacement commands (i use 0)
define the constants for your collision types (player, world, etc.)
setup how you want your objects to collide (SetCollisionsPro)
load your objects
set objects to a collision type (CollisionTypePRO)
set your objects size, radius, gravity, rotation and anything else affecting object
start your main loop
move, rotate objects
update the collision system (RunCollisionPRO())
update the camera to players position
use sync to show changes
end your loop

always follow this order and all should be well.

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The Nerd

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Posted: 2nd Jan 2005 07:52 Edited at: 2nd Jan 2005 07:52

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errrr.... can you please make a very small example?

Thanks

The Nerd

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Lost in Thought

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Posted: 2nd Jan 2005 08:33

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I sure can what version do you have? V3.01 is seriously bugged ATM I would suggest V2.03

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The Nerd

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Posted: 2nd Jan 2005 10:52

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I have the newest demo version...

The Nerd

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Lost in Thought

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Posted: 2nd Jan 2005 11:41

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Here is one slightly modified from the Forum here. It is setup for NGC V3.01 don't forget to inclue the NGCollision.dba in your project and put the NGCollision.dll in the same folder as your .exe

`set display mode
set display mode 1024,768,32 : sync on :sync rate 75
`start collision system gathering info
StartCollisionPRO(000000000,000000000,000000000)
`set collision system to debug mode
StartCollisionDebugPRO()

`set exclusive mode to 0
SetCollisionExclusive( 0 )

`set octree optimization if needed
SetOctreeBuild( 1 )

`set octree threshold if needed
SetOctreeThreshold( 12 )

`set constants to make program easier to read
      #Constant TYPE_NGC_ELLIP=1
      #Constant TYPE_NGC_MESH=2

#Constant ELLIP_2_ELLIP=1
      #Constant ELLIP_2_POLY=2

#Constant RESP_STICK=1
      #Constant RESP_SLIDE=2
      #Constant RESP_SLIDE_NO_SLOPES=3
      #Constant RESP_SLIDE_NO_GRAV=4
      #Constant RESP_SLIDE_NO_ACCEL=5
      #Constant RESP_NONE=6

#Constant DYN_NO_RESP=1
      #Constant DYN_RESP=2
      #Constant DYN_RESP_NOTURN=3

#Constant Auto_Priority=0

#Constant Type_Player=1
		#Constant Type_Wall=2

rem set collision types
SetCollisionsPRO(Type_Player, Type_Wall, ELLIP_2_POLY, RESP_SLIDE, DYN_NO_RESP,Auto_Priority )

`make floor just so you can see where you are going
make object box 3, 1000,1,1000
position object 3, 500, -1, 500
set object wireframe 3,1

rem make player
make object cube 1,10
position object 1,100,100,500
`set wireframe on so you can see colision on the other side
set object wireframe 1,1
rem make obstacles
make object box 2,400,40,40
position object 2,500,-2,500
`set wireframe on so you can see colision on the other side
set object wireframe 2,1

position camera 400,100,0

`set the objects to a collision type
CollisionTypePRO( 1,Type_Player)
CollisionTypePRO( 2,Type_Wall)
CollisionTypePRO( 3,Type_Wall)

rem set radius for player as it is being used as an ellip collision
SetObjRadiusPRO(1,object size x(1)/2,object size y(1)/2,object size z(1)/2)
`set object gravity
SetObjGravityPRO( 1, 1 )

do
	
   rem control player
   if upkey()=1 then move object 1,3
   if downkey()=1 then move object 1,-3
   if leftkey()=1
      turn object left 1,2
   endif
   if rightkey()=1
      turn object right 1,2
   endif
   `update collision system and object positions
   RunCollisionPRO()
   `follow cam code
   set camera to follow object position x(1),object position y(1),object position z(1),0,100,100,10,0
   point camera object position x(1),object position y(1),object position z(1)
   `draw changes to the screen
   sync
loop

+ Code Snippet

`set display mode
set display mode 1024,768,32 : sync on :sync rate 75
`start collision system gathering info
StartCollisionPRO(000000000,000000000,000000000)
`set collision system to debug mode
StartCollisionDebugPRO()

`set exclusive mode to 0
SetCollisionExclusive( 0 )

`set octree optimization if needed
SetOctreeBuild( 1 )

`set octree threshold if needed
SetOctreeThreshold( 12 )


`set constants to make program easier to read
      #Constant TYPE_NGC_ELLIP=1
      #Constant TYPE_NGC_MESH=2

      #Constant ELLIP_2_ELLIP=1
      #Constant ELLIP_2_POLY=2

      #Constant RESP_STICK=1
      #Constant RESP_SLIDE=2
      #Constant RESP_SLIDE_NO_SLOPES=3
      #Constant RESP_SLIDE_NO_GRAV=4
      #Constant RESP_SLIDE_NO_ACCEL=5
      #Constant RESP_NONE=6

      #Constant DYN_NO_RESP=1
      #Constant DYN_RESP=2
      #Constant DYN_RESP_NOTURN=3

      #Constant Auto_Priority=0

		#Constant Type_Player=1
		#Constant Type_Wall=2

rem set collision types
SetCollisionsPRO(Type_Player, Type_Wall, ELLIP_2_POLY, RESP_SLIDE, DYN_NO_RESP,Auto_Priority )

`make floor just so you can see where you are going
make object box 3, 1000,1,1000
position object 3, 500, -1, 500
set object wireframe 3,1

rem make player
make object cube 1,10
position object 1,100,100,500
`set wireframe on so you can see colision on the other side
set object wireframe 1,1
rem make obstacles
make object box 2,400,40,40
position object 2,500,-2,500
`set wireframe on so you can see colision on the other side
set object wireframe 2,1

position camera 400,100,0

`set the objects to a collision type
CollisionTypePRO( 1,Type_Player)
CollisionTypePRO( 2,Type_Wall)
CollisionTypePRO( 3,Type_Wall)

rem set radius for player as it is being used as an ellip collision
SetObjRadiusPRO(1,object size x(1)/2,object size y(1)/2,object size z(1)/2)
`set object gravity
SetObjGravityPRO( 1, 1 )

do
	
   rem control player
   if upkey()=1 then move object 1,3
   if downkey()=1 then move object 1,-3
   if leftkey()=1
      turn object left 1,2
   endif
   if rightkey()=1
      turn object right 1,2
   endif
   `update collision system and object positions
   RunCollisionPRO()
   `follow cam code
   set camera to follow object position x(1),object position y(1),object position z(1),0,100,100,10,0
   point camera object position x(1),object position y(1),object position z(1)
   `draw changes to the screen
   sync
loop

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Freddy 007

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Posted: 3rd Jan 2005 22:03

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Then how does the .x files work?
Me and The Nerd has so far this code:

`set display mode
set display mode 1024,768,32 : sync on :sync rate 75
`start collision system gathering info
StartCollisionPRO(000000000,000000000,000000000)
`set collision system to debug mode
StartCollisionDebugPRO()

`set exclusive mode to 0
SetCollisionExclusive( 0 )

`set octree optimization if needed
SetOctreeBuild( 1 )

`set octree threshold if needed
SetOctreeThreshold( 12 )
      #Constant NCULL_COUNTER_CLOCK 1
      #Constant NCULL_CLOCK 2
      #Constant NCULL_NONE 3

#Constant TYPE_NGC_ELLIP=1
      #Constant TYPE_NGC_MESH=2

#Constant ELLIP_2_ELLIP=1
      #Constant ELLIP_2_POLY=2

#Constant RESP_STICK=1
      #Constant RESP_SLIDE=2
      #Constant RESP_SLIDE_NO_SLOPES=3
      #Constant RESP_SLIDE_NO_GRAV=4
      #Constant RESP_SLIDE_NO_ACCEL=5
      #Constant RESP_NONE=6

#Constant DYN_NO_RESP=1
      #Constant DYN_RESP=2
      #Constant DYN_RESP_NOTURN=3
      #Constant Auto_Priority=0

#Constant Type_Player=1
      #Constant Type_Wall=2

rem set collision types
SetCollisionsPRO(Type_Player, Type_Wall, ELLIP_2_POLY, RESP_SLIDE, DYN_NO_RESP,Auto_Priority )
load object "building 1.x",2
make object box 1,5,5,5: color object 1, rgb(255,255,255)
position object 2,0,0,0
position object 1,0,20,0

`set the objects to a collision type
CollisionTypePRO( 1,Type_Player)
CollisionTypePRO( 2,Type_Wall)

position camera 0,20,-30
rem set radius for player as it is being used as an ellip collision
SetObjRadiusPRO(1,object size x(1)/2,object size y(1)/2,object size z(1)/2)
`set object gravity
 setobjgravitypro( 1, 1)
 do
 if upkey()=1 then move object 1 ,1
 if downkey()=1 then move object 1,-1
 if leftkey()=1
 turn object left 1,2
 endif
 if rightkey()=1
 turn object right 1,2
endif
RunCollisionPRO()
set camera to follow object position x(1),object position y(1),object position z(1),0,100,100,10,0
   point camera object position x(1),object position y(1),object position z(1)
   sync
 loop

`` rem  and then there is the rest of the ng collision code...

+ Code Snippet

`set display mode
set display mode 1024,768,32 : sync on :sync rate 75
`start collision system gathering info
StartCollisionPRO(000000000,000000000,000000000)
`set collision system to debug mode
StartCollisionDebugPRO()

`set exclusive mode to 0
SetCollisionExclusive( 0 )

`set octree optimization if needed
SetOctreeBuild( 1 )

`set octree threshold if needed
SetOctreeThreshold( 12 )
      #Constant NCULL_COUNTER_CLOCK 1
      #Constant NCULL_CLOCK 2
      #Constant NCULL_NONE 3

      #Constant TYPE_NGC_ELLIP=1
      #Constant TYPE_NGC_MESH=2

      #Constant ELLIP_2_ELLIP=1
      #Constant ELLIP_2_POLY=2

      #Constant RESP_STICK=1
      #Constant RESP_SLIDE=2
      #Constant RESP_SLIDE_NO_SLOPES=3
      #Constant RESP_SLIDE_NO_GRAV=4
      #Constant RESP_SLIDE_NO_ACCEL=5
      #Constant RESP_NONE=6

      #Constant DYN_NO_RESP=1
      #Constant DYN_RESP=2
      #Constant DYN_RESP_NOTURN=3
      #Constant Auto_Priority=0

      #Constant Type_Player=1
      #Constant Type_Wall=2

rem set collision types
SetCollisionsPRO(Type_Player, Type_Wall, ELLIP_2_POLY, RESP_SLIDE, DYN_NO_RESP,Auto_Priority )
load object "building 1.x",2
make object box 1,5,5,5: color object 1, rgb(255,255,255)
position object 2,0,0,0
position object 1,0,20,0


`set the objects to a collision type
CollisionTypePRO( 1,Type_Player)
CollisionTypePRO( 2,Type_Wall)

position camera 0,20,-30
rem set radius for player as it is being used as an ellip collision
SetObjRadiusPRO(1,object size x(1)/2,object size y(1)/2,object size z(1)/2)
`set object gravity
 setobjgravitypro( 1, 1)
 do
 if upkey()=1 then move object 1 ,1
 if downkey()=1 then move object 1,-1
 if leftkey()=1
 turn object left 1,2
 endif
 if rightkey()=1
 turn object right 1,2
endif
RunCollisionPRO()
set camera to follow object position x(1),object position y(1),object position z(1),0,100,100,10,0
   point camera object position x(1),object position y(1),object position z(1)
   sync
 loop

`` rem  and then there is the rest of the ng collision code...

but when we run it the screen just turns black, and nothing happens.
What´s the problem???

Spiderman, Spiderman
Does whatever a spider can!
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BatVink

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Posted: 4th Jan 2005 00:39 Edited at: 4th Jan 2005 00:39

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This codebase entry of mine was made using the demo version. It's very basic, and well commented. Run it to see what it does (no media requred), then read the code and the comments, it should make sense very quickly.

http://www.thegamecreators.com/?m=codebase_view&i=6d99af4a5acc16df108236b718052d76

BatVink

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Lost in Thought

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Posted: 4th Jan 2005 04:53

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Try changing this line SetOctreeThreshold( 12 ) the this SetOctreeThreshold( 100 ). The smaller the value is the longer it will take NGC to load the octree and the program will seem to be locked up but will just be calculating. Also Octree is bugged in V3.01 so you may just want to turn it off until it is fixed. Change this

+ Code Snippet

`set octree optimization if needed
SetOctreeBuild( 1 )

`set octree threshold if needed
SetOctreeThreshold( 12 )

to this

+ Code Snippet

`set octree optimization if needed
SetOctreeBuild( 0 )

It will load straight away. As far as .x models in general just change the make object command for load object command.

Also there is another bug with V3.01 you might want to know. When using SetObjRadiusPRO() make sure all 3 values are the same or you will fall/go through some walls/floors. Maybe they will fix these bugs soon.

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