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ExCCameraChase.cpp

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00001 /*
00002  * ExNihilo 3D Engine
00003  * 
00004  *  This program is free software; you can redistribute it and/or modify
00005  *  it under the terms of the GNU General Public License as published by
00006  *  the Free Software Foundation; either version 2 of the License, or
00007  *  (at your option) any later version.
00008  *
00009  *  This program is distributed in the hope that it will be useful,
00010  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  *  GNU Library General Public License for more details.
00013  *
00014  *  You should have received a copy of the GNU General Public License
00015  *  along with this program; if not, write to the Free Software
00016  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017  *
00018  * Please read AUTHORS file !!!
00019  * 
00020  * $Id: ExCCameraChase.cpp,v 1.5 2002/09/03 00:00:02 data Exp $
00021  *
00022  */
00023 
00024 #include "ExCCameraChase.h"
00025 
00026 
00027 ExCCameraChase::ExCCameraChase()
00028 {
00029 Guard(ExCCameraChase::ExCCameraChase())
00030         SetName("ExCCameraChase");
00031         SetType(typeid(this).name());
00032         m_DistanceFromTarget=80.0f;
00033         m_AngleAroundTarget=180;
00034         m_CameraHeight=0.0f;
00035 UnGuard
00036 }
00037 
00038 ExCCameraChase::~ExCCameraChase()
00039 {
00040 Guard(ExCCameraChase::~ExCCameraChase())
00041 UnGuard
00042 }
00043 
00044 void ExCCameraChase::Draw(void)
00045 {
00046 Guard(void ExCCameraChase::Draw(void))
00047         ExCVec3D fwd;
00048         float TargetAngleY,TargetAngleZ;        
00049         //Test if there is one object
00050         if(ManagerModel->GetCurrentObject()>0)
00051         {
00052                 m_Target=fwd+ManagerModel->GetCurrentObject()->GetPosition();
00053                 m_Target.IncY(25);
00054                 TargetAngleY=ManagerModel->GetCurrentObject()->GetAngleY();
00055                 TargetAngleZ=ManagerModel->GetCurrentObject()->GetAngleZ();
00056         }else //Transform the cam into free cam
00057         {
00058                 ExCCamera::Draw();
00059                 return;
00060         }
00061         Process();
00062         
00063         if(m_Angle.GetX()<0)m_Angle.SetX(359);
00064         if(m_Angle.GetX()>359)m_Angle.SetX(0);
00065         if(m_Angle.GetY()<0)m_Angle.SetY(359);
00066         if(m_Angle.GetY()>359)m_Angle.SetY(0);
00067         if(m_Angle.GetZ()<0)m_Angle.SetZ(359);
00068         if(m_Angle.GetZ()>359)m_Angle.SetZ(0);
00069 
00070         float cosY,cosP,cosR;
00071         float sinY,sinP,sinR;
00072 
00073         cosY=cosf(DegreesToRadians(GetAngleY()));
00074         cosP=cosf(DegreesToRadians(GetAngleX()));
00075         cosR=cosf(DegreesToRadians(GetAngleZ()));
00076 
00077         sinY=sinf(DegreesToRadians(GetAngleY()));
00078         sinP=sinf(DegreesToRadians(GetAngleX()));
00079         sinR=sinf(DegreesToRadians(GetAngleZ()));       
00080 
00081         fwd.SetX(sinY*cosP);
00082         fwd.SetY(sinP);
00083         fwd.SetZ(cosP*-cosY);
00084 
00085         m_Position.SetX(cosf(DegreesToRadians(TargetAngleY+m_AngleAroundTarget))*m_DistanceFromTarget);
00086         m_Position.SetY(m_CameraHeight);
00087         m_Position.SetZ(sinf(DegreesToRadians(TargetAngleY+m_AngleAroundTarget))*m_DistanceFromTarget);
00088 
00089         m_Position=m_Position+m_Target;
00090 
00091         m_Up.SetX((-cosY*sinR)-(sinY*sinP*cosR));
00092         m_Up.SetY(cosP*cosR);
00093         m_Up.SetZ((-sinY*sinR)-(sinP*cosR*-cosY));
00094 
00095         gluLookAt(m_Position.GetX(),m_Position.GetY(),m_Position.GetZ()
00096                         ,m_Target.GetX(),m_Target.GetY(),m_Target.GetZ()
00097                         ,m_Up.GetX(),m_Up.GetY(),m_Up.GetZ());
00098 
00099 UnGuard
00100 }
00101 
00102 void ExCCameraChase::Process(void)
00103 {
00104 Guard(void ExCCameraChase::Process(void))
00105         for(unsigned i=0;i<m_VecAction.size();i++)
00106         {
00107                 switch(m_VecAction.at(i)) 
00108                 {
00109                 case ANGLE_AROUND_TARGET_UP:
00110                         m_AngleAroundTarget=m_AngleAroundTarget+0.5;
00111                         break;
00112                 case ANGLE_AROUND_TARGET_DOWN:
00113                         m_AngleAroundTarget=m_AngleAroundTarget-0.5;
00114                         break;
00115                 case DISTANCE_FROM_TARGET_UP:m_DistanceFromTarget++;break;
00116                 case DISTANCE_FROM_TARGET_DOWN:m_DistanceFromTarget--;break;
00117                 case HEIGHT_FROM_TARGET_UP:m_CameraHeight++;break;
00118                 case HEIGHT_FROM_TARGET_DOWN:m_CameraHeight--;break;
00119                 default:ExCCamera::Process();
00120                 }
00121         }
00122 UnGuard
00123 }

Généré le Tue Oct 28 12:43:30 2003 pour ExNihilo par doxygen 1.3.4