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Strange rendering error
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PRG3D Offline
Member

Post: #1
Strange rendering error
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?
(This post was last modified: 02-19-2011 01:25 PM by PRG3D.)
02-19-2011 01:11 PM
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menajev Offline
Bronze Supporter

Post: #2
RE: Strange rendering error
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?
(This post was last modified: 02-19-2011 07:48 PM by menajev.)
02-19-2011 07:43 PM
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PRG3D Offline
Member

Post: #3
RE: Strange rendering error
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);
02-19-2011 08:32 PM
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PRG3D Offline
Member

Post: #4
RE: Strange rendering error
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();
}
02-20-2011 04:19 PM
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Esenthel Offline
Administrator

Post: #5
RE: Strange rendering error
D.line is to be called outside of render function
02-20-2011 05:10 PM
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PRG3D Offline
Member

Post: #6
RE: Strange rendering error
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;
    }
}
(This post was last modified: 02-21-2011 03:39 PM by PRG3D.)
02-21-2011 03:30 PM
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Esenthel Offline
Administrator

Post: #7
RE: Strange rendering error
if you want to use D.line, dont call it inside Render/Renderer, but Draw
02-21-2011 05:07 PM
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