setting up Weapon in FPS

Graphics and GPU Programming Programming

Started by crazy_crab September 29, 2010 07:20 AM

4 comments, last by crazy_crab 13 years, 6 months ago

183

Author

September 29, 2010 07:20 AM

hi,
i am making a simple FPS game in DirectX and c++.
i have a weapon mesh and want to show it as the camera rotate and move,i tried for many hours but can not succeed.

-I know the camera forward,up and right directions (in vector forms)
g_vLook,g_vUp,g_vRight
-I know the current position of camera.
g_vEye

so, how can i set up the rotations and translation of the weapon.

my code is..

    D3DXMATRIX matWorld,temp;     g_pd3dDevice->GetTransform( D3DTS_VIEW, &matView );    D3DXMatrixInverse(&matWorld, 0, &matView);	    //scaling    D3DXMatrixScaling(&mat,.02,.02,.02);    D3DXMatrixMultiply(&matWorld,&matWorld,&mat);    //translation    D3DXMatrixTranslation(&mat,g_vEye.x,g_vEye.y,g_vEye.z);    D3DXMatrixMultiply(&matWorld,&matWorld,&mat);    gun->Draw();

by this code not working well.
please help me.

szecs

2,990

September 29, 2010 07:39 AM

I suggest you to try "fps gun" with the forum's search feature.

[size=2]Portfolio [size=2]| Youtube channel | Paper modeller development blog | Journal

e3d_ALiVE

209

September 29, 2010 10:15 AM

there was similar thread, but how about try creating second camera?
render world from first cam
render fps weapon+hand with second cam

otherwise u can try D3DXMatrixTransfomration functions to make hand+gun rotate around point - player position

Crazy dude smoking D3D11, AngelScript, PhysX, 3D Sound, Network, DB, FBX, and some other weird things, doing that on Visual Studio 2010 + Visual Assist X on Overclocked CPU

Maddius

146

October 05, 2010 06:43 AM

I just made this post on this thread, which should clear up the same issue you are having. Hope it helps.

Cheers.

http://www.gamedev.net/community/forums/topic.asp?topic_id=584106

[size="3"]www.tomwoodhead.net

Anddos

588

October 05, 2010 06:47 AM

just simply render at world*projection, make sure you set the z to something like 5.0f so the mesh inview else its defaulted off screen..

crazy_crab

183

Author

October 05, 2010 07:43 AM

i solve the problem...

D3DXMatrixScaling(&mat,.02,.02,.02);		D3DXMatrixMultiply(stack->GetTop(),stack->GetTop(),&mat);		D3DXMatrixRotationY(&mat,D3DXToRadian(-10));		D3DXMatrixMultiply(stack->GetTop(),stack->GetTop(),&mat);		D3DXMatrixRotationX(&mat,D3DXToRadian(-5));		D3DXMatrixMultiply(stack->GetTop(),stack->GetTop(),&mat);		stack->Translate(.6,-.6,0);		D3DXMATRIX matWorld; 		d3ddev->GetTransform( D3DTS_VIEW, &matView);		D3DXMatrixInverse(&matWorld, 0, &matView);			D3DXMatrixMultiply(stack->GetTop(),stack->GetTop(),&matWorld);		d3ddev->SetTransform( D3DTS_WORLD, stack->GetTop() );		gun->Draw();

actually i sholud multyply the inverse view matrix after all the rotation and translations.this simple thing gave me a bad headach...

setting up Weapon in FPS

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

setting up Weapon in FPS

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Reticulating splines