Leaked source code of windows server 2003
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//-----------------------------------------------------------------------------
// File: pipe.h
//
// Desc: PIPE base class
//
// Copyright (c) 1994-2000 Microsoft Corporation
//-----------------------------------------------------------------------------
#ifndef __pipe_h__
#define __pipe_h__
// pipe drawing status
enum
{
PIPE_ACTIVE,
PIPE_STUCK,
PIPE_OUT_OF_NODES
};
// pipe types
enum
{
TYPE_NORMAL,
TYPE_FLEX_REGULAR,
TYPE_FLEX_TURNING
};
// ways pipe choose directions
enum
{
CHOOSE_DIR_RANDOM_WEIGHTED,
CHOOSE_DIR_CHASE // when chasing a lead pipe
};
// ways pipe choose start positions
enum
{
CHOOSE_STARTPOS_RANDOM,
CHOOSE_STARTPOS_FURTHEST // furthest from last position
};
//-----------------------------------------------------------------------------
// Name: PIPE class
// Desc: - Describes a pipe that draws thru the node array
// - Could have more than one pipe drawing in each array at same time
// - Pipe has position and direction in node array
//-----------------------------------------------------------------------------
class STATE;
class PIPE
{
public:
int m_type;
IPOINT3D m_curPos; // current node position of pipe
D3DMATERIAL8* m_pMat;
STATE* m_pState; // for state value access
void SetChooseDirectionMethod( int method );
void SetChooseStartPosMethod( int method );
int ChooseNewDirection();
BOOL IsStuck(); // if pipe is stuck or not
BOOL NowhereToRun() { return m_status == PIPE_OUT_OF_NODES; }
PIPE( STATE *state );
virtual ~PIPE();
virtual void Start() = 0;
virtual void Draw() = 0;
protected:
float m_radius; // ideal radius (fluctuates for FPIPE)
int m_status; // ACTIVE/STUCK/STOPPED, etc.
int m_lastDir; // last direction taken by pipe
int m_notchVec; // current notch vector
int m_weightStraight; // current weighting of going straight
ID3DXMatrixStack* m_pWorldMatrixStack;
BOOL SetStartPos(); // starting node position
void ChooseMaterial();
void UpdateCurrentPosition( int dir );
void TranslateToCurrentPosition();
void align_plusz( int newDir );
private:
int m_chooseDirMethod;
int m_chooseStartPosMethod;
int GetBestDirsForChase( int *bestDirs );
};
extern void align_plusz( int newDir );
extern int notchTurn[NUM_DIRS][NUM_DIRS][NUM_DIRS];
#endif // __pipe_h__