Strange rendering error

PRG3D · 02-19-2011 01:11 PM

Hi,

When I shoot into sky, everything is ok, but when I shoot to item, or terrain (drawing bullet hole) I have problem.

Screenshot 1(red line - bullet):

[Image: 86977485.jpg]

Screenshot 2 (white line is something interessing error :-D ):

[Image: 47377535.jpg]

Somebody can help me?

menajev · 02-19-2011 07:43 PM

Sorry but it's too hard for me to guess how you calculate bullet lines after seeing screens only.
Read the title again and get confused - what exactly is wrong?

PRG3D · 02-19-2011 08:32 PM

Hmm. bullet is a ray it's update function:

Code:

if(T.alive())

{

    T.move = T.vel*Time.d();//move bullet

    //collision

    BulletHitDetection bhd(this);

    Physics.ray(T.pos,T.move,bhd);

    T.pos += T.move;

}

hit metod:

Code:

Bool hit(PhysHit &hit)

{

    if(T.bullet->alive())

    {

        if(hit.obj)

        {

            if(hit.obj->type() == OBJ_ITEM)

            {

                Message.Add(S+"Item");

                Item *item = CAST(Item, hit.obj);

                item->hit(T.bullet,hit);

            }

        }

    }

    return true;

}

when bullet hit item:

Code:

void Item::hit(Bullet *bullet,PhysHit &ph)

{

    Matrix bullet_matrix; 

    bullet_matrix.setPosDir(ph.plane.pos,ph.plane.normal).scaleOrn(0.05f);

    // add a decal to the item

    Decal &decal=decals.New();

    decal.material (Materials.ptr("Decal/bullet.mtrl"));

    decal.setMatrix(matrixScaled(),bullet_matrix);

}

And now problem is:

All be ok, when I don't shoot to item, but when Item was be hit the white line show up - why? In bullet draw metod is:

Code:

    D.line(YELLOW,T.pos-T.move,T.pos);

    D.line(RED,T.startPos,T.pos);

PRG3D · 02-20-2011 04:19 PM

Hmm problem is when I draw bullet hole in Item draw metod (drawOverlay):

Code:

UInt Item::drawPrepare()

{

    UInt modes=__super::drawPrepare();

    if(T.decals.elms())modes|=IndexToFlag(RM_OVERLAY);

    return modes;

}

void Item::drawOverlay()

{

    REPAO(decals).drawAnimated(T.matrixScaled());

    __super::drawOverlay();

}

**Esenthel** · 02-20-2011 05:10 PM

D.line is to be called outside of render function

PRG3D · 02-21-2011 03:30 PM

What I must to do? I don't undertand well.

It's my render function:

Code:

void Render()

{

    Game::World.draw();

    switch(Renderer())

    {

    case RM_PREPARE:

    case RM_SOLID:

    case RM_AMBIENT: REPAO(Bullets).draw();  break;

    }

}

**Esenthel** · 02-21-2011 05:07 PM

if you want to use D.line, dont call it inside Render/Renderer, but Draw

Strange rendering error
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