1 files changed, 0 insertions, 350 deletions

diff --git a/source/cTracer.cpp b/source/cTracer.cpp
deleted file mode 100644
index fba0f908c..000000000
--- a/source/cTracer.cpp
+++ /dev/null
@@ -1,350 +0,0 @@
-
-#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
-
-#include "cTracer.h"
-#include "cWorld.h"
-
-#include "Vector3f.h"
-#include "Vector3i.h"
-#include "Vector3d.h"
-
-#include "BlockID.h"
-#include "cEntity.h"
-
-#include "Defines.h"
-
-#ifndef _WIN32
-	#include <stdlib.h> // abs()
-#endif
-
-cTracer::cTracer(cWorld* a_World)
-	: m_World( a_World )
-{
-	m_NormalTable[0].Set(-1, 0, 0);
-	m_NormalTable[1].Set( 0, 0,-1);
-	m_NormalTable[2].Set( 1, 0, 0);
-	m_NormalTable[3].Set( 0, 0, 1);
-	m_NormalTable[4].Set( 0, 1, 0);
-	m_NormalTable[5].Set( 0,-1, 0);
-}
-
-cTracer::~cTracer()
-{
-}
-
-float cTracer::SigNum( float a_Num )
-{
-	if (a_Num < 0.f) return -1.f;
-	if (a_Num > 0.f) return 1.f;
-	return 0.f;
-}
-
-void cTracer::SetValues( const Vector3f & a_Start, const Vector3f & a_Direction )
-{
-	// calculate the direction of the ray (linear algebra)
-	dir = a_Direction;
-
-	// decide which direction to start walking in
-	step.x = (int) SigNum(dir.x);
-	step.y = (int) SigNum(dir.y);
-	step.z = (int) SigNum(dir.z);
-
-	// normalize the direction vector
-	if( dir.SqrLength() > 0.f ) dir.Normalize();
-
-	// how far we must move in the ray direction before
-	// we encounter a new voxel in x-direction
-	// same but y-direction
-	if( dir.x != 0.f ) tDelta.x = 1/fabs(dir.x);
-	else tDelta.x = 0;
-	if( dir.y != 0.f ) tDelta.y = 1/fabs(dir.y);
-	else tDelta.y = 0;
-	if( dir.z != 0.f )	tDelta.z = 1/fabs(dir.z);
-	else tDelta.z = 0;
-
-	// start voxel coordinates
-	// use your
-	// transformer
-	// function here
-	pos.x = (int)floorf(a_Start.x);
-	pos.y = (int)floorf(a_Start.y);
-	pos.z = (int)floorf(a_Start.z);
-
-	// calculate distance to first intersection in the voxel we start from
-	if(dir.x < 0)
-	{
-		tMax.x = ((float)pos.x - a_Start.x) / dir.x;
-	}
-	else
-	{
-		tMax.x = (((float)pos.x + 1) - a_Start.x) / dir.x;
-	}
-
-	if(dir.y < 0)
-	{
-		tMax.y = ((float)pos.y - a_Start.y) / dir.y;
-	}
-	else
-	{
-		tMax.y = (((float)pos.y + 1) - a_Start.y) / dir.y;
-	}
-
-	if(dir.z < 0)
-	{
-		tMax.z = ((float)pos.z - a_Start.z) / dir.z;
-	}
-	else
-	{
-		tMax.z = (((float)pos.z + 1) - a_Start.z) / dir.z;
-	}
-}
-
-int cTracer::Trace( const Vector3f & a_Start, const Vector3f & a_Direction, int a_Distance)
-{
-	SetValues( a_Start, a_Direction );
-
-	const Vector3f End = a_Start + (dir * (float)a_Distance);
-
-	// end voxel coordinates
-	end1.x = (int)floorf(End.x);
-	end1.y = (int)floorf(End.y);
-	end1.z = (int)floorf(End.z);
-
-	// check if first is occupied
-	if( pos.Equals( end1 ) )
-	{
-		LOG("WARNING: cTracer: Start and end in same block");
-		return 0;
-	}
-
-	bool reachedX = false, reachedY = false, reachedZ = false;
-
-	int Iterations = 0;
-	while ( Iterations < a_Distance )
-	{
-		Iterations++;
-		if(tMax.x < tMax.y && tMax.x < tMax.z)
-		{
-			tMax.x += tDelta.x;
-			pos.x += step.x;
-		}
-		else if(tMax.y < tMax.z)
-		{
-			tMax.y += tDelta.y;
-			pos.y += step.y;
-		}
-		else
-		{
-			tMax.z += tDelta.z;
-			pos.z += step.z;
-		}
-
-		if(step.x > 0.0f)
-		{
-			if(pos.x >= end1.x)
-			{
-				reachedX = true;
-			}
-		}
-		else if(pos.x <= end1.x)
-		{
-			reachedX = true;
-		}
-
-		if(step.y > 0.0f)
-		{
-			if(pos.y >= end1.y)
-			{
-				reachedY = true;
-			}
-		}
-		else if(pos.y <= end1.y)
-		{
-			reachedY = true;
-		}
-
-		if(step.z > 0.0f)
-		{
-			if(pos.z >= end1.z)
-			{
-				reachedZ = true;
-			}
-		}
-		else if(pos.z <= end1.z)
-		{
-			reachedZ = true;
-		}
-
-		if (reachedX && reachedY && reachedZ)
-		{
-			return false;
-		}
-		
-		char BlockID = m_World->GetBlock( pos.x, pos.y, pos.z );
-		//No collision with water ;)
-		if ( BlockID != E_BLOCK_AIR || IsBlockWater(BlockID))
-		{
-			BlockHitPosition = pos;
-			int Normal = GetHitNormal(a_Start, End, pos );
-			if(Normal > 0)
-			{
-				HitNormal = m_NormalTable[Normal-1];
-			}
-			return 1;
-		}
-	}
-	return 0;
-}
-
-// return 1 = hit, other is not hit
-int LinesCross(float x0,float y0,float x1,float y1,float x2,float y2,float x3,float y3)
-{
-	//float linx, liny;
-
-	float d=(x1-x0)*(y3-y2)-(y1-y0)*(x3-x2);
-	if (abs(d)<0.001) {return 0;}
-	float AB=((y0-y2)*(x3-x2)-(x0-x2)*(y3-y2))/d;
-	if (AB>=0.0 && AB<=1.0)
-	{
-		float CD=((y0-y2)*(x1-x0)-(x0-x2)*(y1-y0))/d;
-		if (CD>=0.0 && CD<=1.0)
-		{
-			//linx=x0+AB*(x1-x0);
-			//liny=y0+AB*(y1-y0);
-			return 1;
-		}
-	}
-	return 0;
-}
-
-// intersect3D_SegmentPlane(): intersect a segment and a plane
-//    Input:  a_Ray = a segment, and a_Plane = a plane = {Point V0; Vector n;}
-//    Output: *I0 = the intersect point (when it exists)
-//    Return: 0 = disjoint (no intersection)
-//            1 = intersection in the unique point *I0
-//            2 = the segment lies in the plane
-int cTracer::intersect3D_SegmentPlane( const Vector3f & a_Origin, const Vector3f & a_End, const Vector3f & a_PlanePos, const Vector3f & a_PlaneNormal )
-{
-	Vector3f    u = a_End - a_Origin;//a_Ray.P1 - S.P0;
-	Vector3f    w = a_Origin - a_PlanePos;//S.P0 - Pn.V0;
-
-	float     D = a_PlaneNormal.Dot( u );//dot(Pn.n, u);
-	float     N = -(a_PlaneNormal.Dot( w ) );//-dot(a_Plane.n, w);
-
-	const float EPSILON = 0.0001f;
-	if (fabs(D) < EPSILON) {          // segment is parallel to plane
-		if (N == 0)                     // segment lies in plane
-			return 2;
-		return 0;                   // no intersection
-	}
-	// they are not parallel
-	// compute intersect param
-	float sI = N / D;
-	if (sI < 0 || sI > 1)
-		return 0;                       // no intersection
-
-	//Vector3f I ( a_Ray->GetOrigin() + sI * u );//S.P0 + sI * u;                 // compute segment intersect point
-	RealHit = a_Origin + u * sI;
-	return 1;
-}
-
-int cTracer::GetHitNormal(const Vector3f & start, const Vector3f & end, const Vector3i & a_BlockPos)
-{
-	Vector3i SmallBlockPos = a_BlockPos;
-	char BlockID = m_World->GetBlock( a_BlockPos.x, a_BlockPos.y, a_BlockPos.z );
-
-	if( BlockID == E_BLOCK_AIR || IsBlockWater(BlockID))
-		return 0;
-
-	Vector3f BlockPos;
-	BlockPos = Vector3f(SmallBlockPos);
-
-	Vector3f Look = (end - start);
-	Look.Normalize();
-
-	float dot = Look.Dot( Vector3f(-1, 0, 0) ); // first face normal is x -1
-	if(dot < 0)
-	{
-		int Lines = LinesCross( start.x, start.y, end.x, end.y, BlockPos.x, BlockPos.y, BlockPos.x, BlockPos.y + 1 );
-		if(Lines == 1)
-		{
-			Lines = LinesCross( start.x, start.z, end.x, end.z, BlockPos.x, BlockPos.z, BlockPos.x, BlockPos.z + 1 );
-			if(Lines == 1)
-			{
-				intersect3D_SegmentPlane( start, end, BlockPos, Vector3f(-1, 0, 0) );
-				return 1;
-			}
-		}
-	}
-	dot = Look.Dot( Vector3f(0, 0, -1) ); // second face normal is z -1
-	if(dot < 0)
-	{
-		int Lines = LinesCross( start.z, start.y, end.z, end.y, BlockPos.z, BlockPos.y, BlockPos.z, BlockPos.y + 1 );
-		if(Lines == 1)
-		{
-			Lines = LinesCross( start.z, start.x, end.z, end.x, BlockPos.z, BlockPos.x, BlockPos.z, BlockPos.x + 1 );
-			if(Lines == 1)
-			{
-				intersect3D_SegmentPlane( start, end, BlockPos, Vector3f(0, 0, -1) );
-				return 2;
-			}
-		}
-	}
-	dot = Look.Dot( Vector3f(1, 0, 0) ); // third face normal is x 1
-	if(dot < 0)
-	{
-		int Lines = LinesCross( start.x, start.y, end.x, end.y, BlockPos.x + 1, BlockPos.y, BlockPos.x + 1, BlockPos.y + 1 );
-		if(Lines == 1)
-		{
-			Lines = LinesCross( start.x, start.z, end.x, end.z, BlockPos.x + 1, BlockPos.z, BlockPos.x + 1, BlockPos.z + 1 );
-			if(Lines == 1)
-			{
-				intersect3D_SegmentPlane( start, end, BlockPos + Vector3f(1, 0, 0), Vector3f(1, 0, 0) );
-				return 3;
-			}
-		}
-	}
-	dot = Look.Dot( Vector3f(0, 0, 1) ); // fourth face normal is z 1
-	if(dot < 0)
-	{
-		int Lines = LinesCross( start.z, start.y, end.z, end.y, BlockPos.z + 1, BlockPos.y, BlockPos.z + 1, BlockPos.y + 1 );
-		if(Lines == 1)
-		{
-			Lines = LinesCross( start.z, start.x, end.z, end.x, BlockPos.z + 1, BlockPos.x, BlockPos.z + 1, BlockPos.x + 1 );
-			if(Lines == 1)
-			{
-				intersect3D_SegmentPlane( start, end, BlockPos + Vector3f(0, 0, 1), Vector3f(0, 0, 1) );
-				return 4;
-			}
-		}
-	}
-	dot = Look.Dot( Vector3f(0, 1, 0) ); // fifth face normal is y 1
-	if(dot < 0)
-	{
-		int Lines = LinesCross( start.y, start.x, end.y, end.x, BlockPos.y + 1, BlockPos.x, BlockPos.y + 1, BlockPos.x + 1 );
-		if(Lines == 1)
-		{
-			Lines = LinesCross( start.y, start.z, end.y, end.z, BlockPos.y + 1, BlockPos.z, BlockPos.y + 1, BlockPos.z + 1 );
-			if(Lines == 1)
-			{
-				intersect3D_SegmentPlane( start, end, BlockPos + Vector3f(0, 1, 0), Vector3f(0, 1, 0) );
-				return 5;
-			}
-		}
-	}
-	dot = Look.Dot( Vector3f(0, -1, 0) ); // sixth face normal is y -1
-	if(dot < 0)
-	{
-		int Lines = LinesCross( start.y, start.x, end.y, end.x, BlockPos.y, BlockPos.x, BlockPos.y, BlockPos.x + 1 );
-		if(Lines == 1)
-		{
-			Lines = LinesCross( start.y, start.z, end.y, end.z, BlockPos.y, BlockPos.z, BlockPos.y, BlockPos.z + 1 );
-			if(Lines == 1)
-			{
-				intersect3D_SegmentPlane( start, end, BlockPos, Vector3f(0, -1, 0) );
-				return 6;
-			}
-		}
-	}
-	return 0;
-}