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Hello guys, i'm using the Newton Wrapper 1.53 but i'm having some troubles: objects fall by the gravity, but when they hit the level they just decelerate and after some frames they gets through.

Here is the code i'm using for download the level

objWorld = FreeObject()
load object "media\levels\ndb.dbo", objWorld
Col = NDB_NewtonCreateTreeCollision( objWorld )
Room = NDB_NewtonCreateBody( Col )
NDB_BodySetDBProData Room, objWorld
NDB_NewtonBodySetDestructorCallback Room
NDB_NewtonReleaseCollision Col


and here'is my function for make a box

function ENT_makeBox(sizex,sizey,sizez,x,y,z,anglex,angley,anglez)
i = ENT_crea()
obj = ENT_getObjID(i)
make object box obj,sizex,sizey,sizez
position object obj, x,y,z
rotate object obj, anglex,angley,anglez
collIndex = NDB_NewtonCreateBox( sizex,sizey,sizez )
Body = NDB_NewtonCreateBody( collIndex )
arrEntita(i).bodyID = Body;
NDB_BuildMatrix object angle x(obj), object angle y(obj), object angle z(obj) , object position x(obj) , object position y(obj)-size, object position z(obj)
NDB_NewtonBodySetMatrix Body

mass# = 50
NDB_CalculateMIBoxSolid mass#, size, size, size
NDB_NewtonBodySetMassMatrix Body, mass#
NDB_NewtonReleaseCollision collIndex
NDB_BodySetDBProData body, obj
NDB_NewtonBodySetDestructorCallback Body
NDB_BodySetGravity Body, 1
endfunction i

After converting a project from Dark Physics to Newton 1.53 i have noticed some things with Newton that are important.

Object sizes.
Do not use upscaled object sizes. Newton expects one DBPro unit is one meter. So a 1x1x1 box is a cubic meter. For example if you want to simulate a pool/billiard ball this should be size: 0.057 (57 millimeters). This is very important and crucial for simulation to work as expected. Do not use a size of 57 and scale up the gravity instead.

Keep mass in a limited range for all simulated objects.
I think the help file states one should keep the mass range within a 200 range for all simulated bodies. I have experienced that the engine has very hard times calculating piled up bodies if large mass bodies are involved, resulting in extremely slow simulation times.

Regards
Duke

Thanks for the tips

Now i'm having another problem.. does anyone know how to make a decent player control system with Newton? :S

I'm also working on something in Newton. I didn't think about the scale factor. Does anyone know what scale factor Anim8or uses? It has grids, I'm not sure if they relate to DBPro sizes.

Do you set the world size? That is important in Newton 1.53.


Player controller is not easily done in Newton. If that is what you are after there are a few posts showing people's progress, but it is not ideal.