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navid

1st person camera design

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hello guys.I'm new in DirectX9.0 game programming.I have designed a 1st person camera in my 3d world. Now I want to add a gun to my camera so that the gun & the camera will move in the 3d world properly. Can any one tell me how to do this? Thanks in advance. Here's my code for camera: Camera::Camera() { up=D3DXVECTOR3(0.0f, 1.0f, 0.0f); look=D3DXVECTOR3(0.0f, 0.0f, 1.0f); right=D3DXVECTOR3(1.0f, 0.0f, 0.0f); position=D3DXVECTOR3(0.0f, 0.0f, 0.0f); } void Camera::Strafe(float u) { position+=right*u; return; }//end Strafe. void Camera::Fly(float u) { position+=up*u; return; }//end Fly. void Camera::Walk(float u) { position+=look*u; return; }//end Walk. void Camera::RotateAroundRightVector(float angle) { D3DXMATRIX R; D3DXMatrixRotationAxis(&R, &right, angle); D3DXVec3TransformCoord(&up, &up, &R); D3DXVec3TransformCoord(&look, &look, &R); return; }//end RotateAroundRight. void Camera::RotateAroundUpVector(float angle) { D3DXMATRIX R; D3DXMatrixRotationAxis(&R, &up, angle); D3DXVec3TransformCoord(&right, &right, &R); D3DXVec3TransformCoord(&look, &look, &R); return; }//end RotateAroundUp. void Camera::RotateAroundLookVector(float angle) { D3DXMATRIX R; D3DXMatrixRotationAxis(&R, &look, angle); D3DXVec3TransformCoord(&right, &right, &R); D3DXVec3TransformCoord(&up, &up, &R); return; }//end RotateAroundLook. void Camera::GetViewMatrix(D3DXMATRIX *v) { D3DXVec3Normalize(&look, &look); D3DXVec3Cross(&up, &look, &right); D3DXVec3Normalize(&up,&up); D3DXVec3Cross(&right, &up, &look); D3DXVec3Normalize(&right, &right); (*v)(0,0)=right.x; (*v)(0,1)=up.x; (*v)(0,2)=look.x; (*v)(0,3)=0; (*v)(1,0)=right.y; (*v)(1,1)=up.y; (*v)(1,2)=look.y; (*v)(1,3)=0; (*v)(2,0)=right.z; (*v)(2,1)=up.z; (*v)(2,2)=look.z; (*v)(2,3)=0; (*v)(3,0)=-D3DXVec3Dot(&right, &position); (*v)(3,1)=-D3DXVec3Dot(&up, &position); (*v)(3,2)=-D3DXVec3Dot(&look, &position); (*v)(3,3)=1; return; }//end GetViewMatrix. [Edited by - navid on January 24, 2009 8:41:40 AM]

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