85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
|
|
||
|
|
// LineBlockTracer.h
|
||
|
|
|
||
|
|
// Declares the cLineBlockTracer class representing a cBlockTracer that traces along a straight line between two points
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include "BlockTracer.h"
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
// fwd: Chunk.h
|
||
|
|
class cChunk;
|
||
|
|
|
||
|
|
// fwd: cChunkMap.h
|
||
|
|
typedef cItemCallback<cChunk> cChunkCallback;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
class cLineBlockTracer :
|
||
|
|
public cBlockTracer,
|
||
|
|
public cChunkCallback
|
||
|
|
{
|
||
|
|
typedef cBlockTracer super;
|
||
|
|
|
||
|
|
public:
|
||
|
|
cLineBlockTracer(cWorld & a_World, cCallbacks & a_Callbacks);
|
||
|
|
|
||
|
|
/// Traces one line between Start and End; returns true if the entire line was traced (until OnNoMoreHits())
|
||
|
|
bool Trace(double a_StartX, double a_StartY, double a_StartZ, double a_EndX, double a_EndY, double a_EndZ);
|
||
|
|
|
||
|
|
// Utility functions for simple one-line usage:
|
||
|
|
/// Traces one line between Start and End; returns true if the entire line was traced (until OnNoMoreHits())
|
||
|
|
static bool Trace(cWorld & a_World, cCallbacks & a_Callbacks, double a_StartX, double a_StartY, double a_StartZ, double a_EndX, double a_EndY, double a_EndZ);
|
||
|
|
|
||
|
|
/// Traces one line between Start and End; returns true if the entire line was traced (until OnNoMoreHits())
|
||
|
|
static bool Trace(cWorld & a_World, cCallbacks & a_Callbacks, const Vector3d & a_Start, const Vector3d & a_End);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
// The start point of the trace
|
||
|
|
double m_StartX, m_StartY, m_StartZ;
|
||
|
|
|
||
|
|
// The end point of the trace
|
||
|
|
double m_EndX, m_EndY, m_EndZ;
|
||
|
|
|
||
|
|
// The difference in coords, End - Start
|
||
|
|
double m_DiffX, m_DiffY, m_DiffZ;
|
||
|
|
|
||
|
|
// The increment at which the block coords are going from Start to End; either +1 or -1
|
||
|
|
int m_DirX, m_DirY, m_DirZ;
|
||
|
|
|
||
|
|
// The current block
|
||
|
|
int m_CurrentX, m_CurrentY, m_CurrentZ;
|
||
|
|
|
||
|
|
|
||
|
|
/// Adjusts the start point above the world to just at the world's top
|
||
|
|
void FixStartAboveWorld(void);
|
||
|
|
|
||
|
|
/// Adjusts the start point below the world to just at the world's bottom
|
||
|
|
void FixStartBelowWorld(void);
|
||
|
|
|
||
|
|
/// Calculates the XZ coords of an intersection with the specified Yconst plane; assumes that such an intersection exists
|
||
|
|
void CalcXZIntersection(double a_Y, double & a_IntersectX, double & a_IntersectZ);
|
||
|
|
|
||
|
|
/// Moves m_Current to the next block on the line; returns false if no move is possible (reached the end)
|
||
|
|
bool MoveToNextBlock(void);
|
||
|
|
|
||
|
|
// cChunkCallback overrides:
|
||
|
|
virtual bool Item(cChunk * a_Chunk) override;
|
||
|
|
} ;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|