BlockTracer.h

Go to the documentation of this file.

 
// BlockTracer.h
 
// Declares the classes common for all blocktracers
 
 
 
 
 
#pragma once
 
 
 
 
 
#include "Defines.h"
#include "ChunkDef.h"
 
 
 
 
// fwd: World.h
class cWorld;
 
 
 
 
 
class cBlockTracer abstract
{
public:
    class cCallbacks abstract
    {
    public:
        // Force a virtual destructor in descendants:
        virtual ~cCallbacks() {}
 
        virtual bool OnNextBlock(Vector3i a_BlockPos, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, eBlockFace a_EntryFace) = 0;
 
        virtual bool OnNextBlockNoData(Vector3i a_BlockPos, eBlockFace a_EntryFace)
        {
            UNUSED(a_BlockPos);
            UNUSED(a_EntryFace);
            return false;
        }
 
        virtual bool OnOutOfWorld(Vector3d a_BlockPos)
        {
            UNUSED(a_BlockPos);
            return false;
        }
 
        virtual bool OnIntoWorld(Vector3d a_BlockPos)
        {
            UNUSED(a_BlockPos);
            return false;
        }
 
        virtual void OnNoMoreHits(void) {}
 
        virtual void OnNoChunk(void) {}
    } ;
 
 
    cBlockTracer(cWorld & a_World, cCallbacks & a_Callbacks) :
        m_World(&a_World),
        m_Callbacks(&a_Callbacks)
    {
    }
 
 
    cWorld & SetWorld(cWorld & a_World)
    {
        cWorld & Old = *m_World;
        m_World = &a_World;
        return Old;
    }
 
 
    cCallbacks & SetCallbacks(cCallbacks & a_NewCallbacks)
    {
        cCallbacks & Old = *m_Callbacks;
        m_Callbacks = &a_NewCallbacks;
        return Old;
    }
 
protected:
    cWorld * m_World;
 
    cCallbacks * m_Callbacks;
} ;