how to rotate/move a object

wARmAcH1n3 · 08-16-2012 11:47 PM

i create a object dynamicly like in the tutorial 10 - Dynamically Created Objects.cpp

Code:

Game::ObjParamsPtr obj_B;

bool Init()

{

...

   // set world

   {

      Game::World.init();

      // set object classess, do not use enum's because we don't know them yet, they will be loaded depending on the DataPath

      Game::World.setObjType(Statics       , Game::ObjType(L"OBJ_STATIC"      ));

      Game::World.setObjType(Kinematics    , Game::ObjType(L"OBJ_KINEMATIC"   ));

      Game::World.setObjType(Items         , Game::ObjType(L"OBJ_ITEM"        ));

      Game::World.setObjType(Doors         , Game::ObjType(L"OBJ_DOOR"        ));

      Game::World.setObjType(Chrs          , Game::ObjType(L"OBJ_CHR"         ));

      Game::World.setObjType(Players       , Game::ObjType(L"OBJ_PLAYER"      ));

      Game::World.setObjType(ObjLightPoints, Game::ObjType(L"OBJ_LIGHT_POINT" ));

      Game::World.setObjType(ObjLightCones , Game::ObjType(L"OBJ_LIGHT_CONE"  ));

      Game::World.setObjType(ObjParticless , Game::ObjType(L"OBJ_PARTICLES"   ));

      Game::World.setObjType(Destructibles , Game::ObjType(L"OBJ_DESTRUCTIBLE"));

      Game::World.setObjType(Animatables   , Game::ObjType(L"OBJ_ANIMATABLE"  ));

      Game::World.New(L"World/world01.world");

   }

     obj_B=Game::Objs.ptrRequire("obj/item/misc/barrel/0.obj"); // get barrel object parameters

     Game::World.objCreate(*obj_B, Matrix(obj_B->scale(), Vec(16,8,16)));            // create new object at (16,8,16) position and give objects default scaling

   return true;

}

if i look at the ObjParamsPtr obj_B i don't find a function to rotate or move this object. only if i go over _data

Code:

obj._data->matrixFinal(Vec(16,8,16));

i get the error that _data is private member

Fex · 08-17-2012 05:21 AM

Something like this might work

Code:

Game::ObjParamsPtr obj_B;

      obj_B=Game::Objs.ptrRequire("obj/item/misc/barrel/0.obj");

      Game::ObjParams actualObject= *obj_B;

      actualObject.matrix.pos.set(Flt x, Flt y, flt Z);

      actualObject.matrix.rotate(Vec Axis, flt Angle);

There is probably an elegant way to do what you want.

wARmAcH1n3 · 08-17-2012 09:29 PM

thx i got it compile but the set function and the other functions like scale doesnt work, whatever i try the barrel just spawns and dont react the settings

i tried
obj->matrix.pos.set(2,2,2);
too, but same no reaction

i dont get it why it doesnt work

Code:

Bool Update()

{

       if(Kb.bp(KB_ESC))return false;

   CamHandle(0.1f, 100, CAMH_ZOOM|(Ms.b(1)?CAMH_MOVE:CAMH_ROT));

   Game::World.update(Cam.at);

   if(Kb.bp(KB_SPACE)) // on space

   {

      Game::ObjParamsPtr obj=Game::Objs.ptrRequire("obj/item/misc/barrel/0.obj"); // get barrel object parameters

      Game::World.objCreate(*obj, Matrix(obj->scale(), Vec(16,8,16)));            // create new object at (16,8,16) position and give objects default scaling

      Game::ObjParams actualObject= *obj;

      actualObject.matrix.pos.set(2,2,2);

      actualObject.scale(true,3);

   }

   return true;

}

i tried it with a
static Game::ObjParamsPtr obj;
but still doesnt work

Code:

Bool Update()

{

    static Game::ObjParamsPtr obj;

       if(Kb.bp(KB_ESC))return false;

   CamHandle(0.1f, 100, CAMH_ZOOM|(Ms.b(1)?CAMH_MOVE:CAMH_ROT));

   Game::World.update(Cam.at);

   if(Kb.bp(KB_SPACE)) // on space

   {

      obj=Game::Objs.ptrRequire("obj/item/misc/barrel/0.obj"); // get barrel object parameters

      Game::World.objCreate(*obj, Matrix(obj->scale(), Vec(16,8,16)));            // create new object at (16,8,16) position and give objects default scaling

   }

   if(Kb.bp(KB_LEFT)) // on space

   {

         Game::ObjParams actualObject= *obj;

      actualObject.matrix.pos.set(2,2,2);

      actualObject.scale(true,3);

   }

   return true;

}

Fex · 08-18-2012 01:26 AM

Try this instead

Code:

Game::ObjParamsPtr obj_B;

      obj_B=Game::Objs.ptrRequire("obj/item/misc/barrel/0.obj");

      Game::ObjParams objectparams= *obj_B;

Game::Obj barrelObj;

barrelObj.create(objectparams);

barrelObj.matrix(Matrix().setPosDir(Vec position,Vec direction, Vec upDirection));

Where you replace Vec position,Vec direction, Vec upDirection with how you want the object oriented.

wARmAcH1n3 · 08-18-2012 01:28 PM

the creating of barrelObj causes an compiler error
Game::Obj barrelObj;

--\source\main.cpp(112) : error C2259: 'EE::Game::Obj' : cannot instantiate abstract class
due to following members:
'void EE::Game::Obj::create(EE::Game::ObjParams &)' : is abstract
c:\program files (x86)\microsoft visual studio 9.0\vc\include\esenthelengine\game\object.h(14) : see declaration of 'EE::Game::Obj::create'
'void EE::Game::Obj::pos(const EE::Vec &)' : is abstract

but never mind, i switched the engine, thx anyway

Fex · 08-19-2012 01:33 AM

Hmm ya that makes sense.

Instead of Game::Obj change it to Game::Kinematic

Put this where you declare stuff

Code:

Game::ObjParamsPtr obj_B;

Game::ObjParams objectparams;

Game::Kinematic  barrelObj;

Put this where you create stuff

Code:

obj_B=Game::Objs.ptrRequire("obj/item/misc/barrel/0.obj");

   objectparams= *obj_B;

barrelObj.create(objectparams);

Put this wherever you update stuff

Code:

barrelObj.matrix(Vec position,Vec direction, Vec upDirection));

make sure to pass Vec upDirection as upDirection.normalize()

Then put

Code:

barrelObj.drawPrepare();

Where you prepare drawing

Put

Code:

barrelObj.drawBlend();

Where you draw things (assuming you are using blended mode), if not change it.

I just tested this and it works on my machine.

There may be an easier way to do this, but I can't think of it. If you want to have multiple barrels you would need to put them in a memory container and add/remove them. Like Memc<Game::Kinematic> barrels; Then do like REPA(barrels)barrels[i].draw; In your draw function etc.

Maybe why you were not seeing things earlier was that you were just creating the object but not drawing it to the screen.

how to rotate/move a object
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