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-rw-r--r--src/Tracer.cpp148
1 files changed, 74 insertions, 74 deletions
diff --git a/src/Tracer.cpp b/src/Tracer.cpp
index 913f25e01..5bf50bbfc 100644
--- a/src/Tracer.cpp
+++ b/src/Tracer.cpp
@@ -75,78 +75,78 @@ void cTracer::SetValues(const Vector3f & a_Start, const Vector3f & a_Direction)
ASSERT(a_Direction.HasNonZeroLength());
// calculate the direction of the ray (linear algebra)
- dir = a_Direction;
+ m_Dir = a_Direction;
// decide which direction to start walking in
- step.x = SigNum(dir.x);
- step.y = SigNum(dir.y);
- step.z = SigNum(dir.z);
+ m_Step.x = SigNum(m_Dir.x);
+ m_Step.y = SigNum(m_Dir.y);
+ m_Step.z = SigNum(m_Dir.z);
// normalize the direction vector
- dir.Normalize();
+ m_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)
+ if (m_Dir.x != 0.f)
{
- tDelta.x = 1 / std::abs(dir.x);
+ m_tDelta.x = 1 / std::abs(m_Dir.x);
}
else
{
- tDelta.x = 0;
+ m_tDelta.x = 0;
}
- if (dir.y != 0.f)
+ if (m_Dir.y != 0.f)
{
- tDelta.y = 1 / std::abs(dir.y);
+ m_tDelta.y = 1 / std::abs(m_Dir.y);
}
else
{
- tDelta.y = 0;
+ m_tDelta.y = 0;
}
- if (dir.z != 0.f)
+ if (m_Dir.z != 0.f)
{
- tDelta.z = 1 / std::abs(dir.z);
+ m_tDelta.z = 1 / std::abs(m_Dir.z);
}
else
{
- tDelta.z = 0;
+ m_tDelta.z = 0;
}
// start voxel coordinates
- pos.x = static_cast<int>(floorf(a_Start.x));
- pos.y = static_cast<int>(floorf(a_Start.y));
- pos.z = static_cast<int>(floorf(a_Start.z));
+ m_Pos.x = static_cast<int>(floorf(a_Start.x));
+ m_Pos.y = static_cast<int>(floorf(a_Start.y));
+ m_Pos.z = static_cast<int>(floorf(a_Start.z));
// calculate distance to first intersection in the voxel we start from
- if (dir.x < 0)
+ if (m_Dir.x < 0)
{
- tMax.x = (static_cast<float>(pos.x) - a_Start.x) / dir.x;
+ m_tMax.x = (static_cast<float>(m_Pos.x) - a_Start.x) / m_Dir.x;
}
else
{
- tMax.x = (static_cast<float>(pos.x + 1) - a_Start.x) / dir.x; // TODO: Possible division by zero
+ m_tMax.x = (static_cast<float>(m_Pos.x + 1) - a_Start.x) / m_Dir.x; // TODO: Possible division by zero
}
- if (dir.y < 0)
+ if (m_Dir.y < 0)
{
- tMax.y = (static_cast<float>(pos.y) - a_Start.y) / dir.y;
+ m_tMax.y = (static_cast<float>(m_Pos.y) - a_Start.y) / m_Dir.y;
}
else
{
- tMax.y = (static_cast<float>(pos.y + 1) - a_Start.y) / dir.y; // TODO: Possible division by zero
+ m_tMax.y = (static_cast<float>(m_Pos.y + 1) - a_Start.y) / m_Dir.y; // TODO: Possible division by zero
}
- if (dir.z < 0)
+ if (m_Dir.z < 0)
{
- tMax.z = (static_cast<float>(pos.z) - a_Start.z) / dir.z;
+ m_tMax.z = (static_cast<float>(m_Pos.z) - a_Start.z) / m_Dir.z;
}
else
{
- tMax.z = (static_cast<float>(pos.z + 1) - a_Start.z) / dir.z; // TODO: Possible division by zero
+ m_tMax.z = (static_cast<float>(m_Pos.z + 1) - a_Start.z) / m_Dir.z; // TODO: Possible division by zero
}
}
@@ -169,21 +169,21 @@ bool cTracer::Trace(const Vector3f & a_Start, const Vector3f & a_Direction, int
SetValues(a_Start, a_Direction);
- Vector3f End = a_Start + (dir * static_cast<float>(a_Distance));
+ Vector3f End = a_Start + (m_Dir * static_cast<float>(a_Distance));
if (End.y < 0)
{
- float dist = -a_Start.y / dir.y; // No division by 0 possible
- End = a_Start + (dir * dist);
+ float dist = -a_Start.y / m_Dir.y; // No division by 0 possible
+ End = a_Start + (m_Dir * dist);
}
// end voxel coordinates
- end1.x = static_cast<int>(floorf(End.x));
- end1.y = static_cast<int>(floorf(End.y));
- end1.z = static_cast<int>(floorf(End.z));
+ m_End1.x = static_cast<int>(floorf(End.x));
+ m_End1.y = static_cast<int>(floorf(End.y));
+ m_End1.z = static_cast<int>(floorf(End.z));
// check if first is occupied
- if (pos.Equals(end1))
+ if (m_Pos.Equals(m_End1))
{
return false;
}
@@ -194,54 +194,54 @@ bool cTracer::Trace(const Vector3f & a_Start, const Vector3f & a_Direction, int
while (Iterations < a_Distance)
{
Iterations++;
- if ((tMax.x < tMax.y) && (tMax.x < tMax.z))
+ if ((m_tMax.x < m_tMax.y) && (m_tMax.x < m_tMax.z))
{
- tMax.x += tDelta.x;
- pos.x += step.x;
+ m_tMax.x += m_tDelta.x;
+ m_Pos.x += m_Step.x;
}
- else if (tMax.y < tMax.z)
+ else if (m_tMax.y < m_tMax.z)
{
- tMax.y += tDelta.y;
- pos.y += step.y;
+ m_tMax.y += m_tDelta.y;
+ m_Pos.y += m_Step.y;
}
else
{
- tMax.z += tDelta.z;
- pos.z += step.z;
+ m_tMax.z += m_tDelta.z;
+ m_Pos.z += m_Step.z;
}
- if (step.x > 0.0f)
+ if (m_Step.x > 0.0f)
{
- if (pos.x >= end1.x)
+ if (m_Pos.x >= m_End1.x)
{
reachedX = true;
}
}
- else if (pos.x <= end1.x)
+ else if (m_Pos.x <= m_End1.x)
{
reachedX = true;
}
- if (step.y > 0.0f)
+ if (m_Step.y > 0.0f)
{
- if (pos.y >= end1.y)
+ if (m_Pos.y >= m_End1.y)
{
reachedY = true;
}
}
- else if (pos.y <= end1.y)
+ else if (m_Pos.y <= m_End1.y)
{
reachedY = true;
}
- if (step.z > 0.0f)
+ if (m_Step.z > 0.0f)
{
- if (pos.z >= end1.z)
+ if (m_Pos.z >= m_End1.z)
{
reachedZ = true;
}
}
- else if (pos.z <= end1.z)
+ else if (m_Pos.z <= m_End1.z)
{
reachedZ = true;
}
@@ -251,17 +251,17 @@ bool cTracer::Trace(const Vector3f & a_Start, const Vector3f & a_Direction, int
return false;
}
- if ((pos.y < 0) || (pos.y >= cChunkDef::Height))
+ if ((m_Pos.y < 0) || (m_Pos.y >= cChunkDef::Height))
{
return false;
}
- BLOCKTYPE BlockID = m_World->GetBlock(pos.x, pos.y, pos.z);
+ BLOCKTYPE BlockID = m_World->GetBlock(m_Pos);
// Block is counted as a collision if we are not doing a line of sight and it is solid,
// or if the block is not air and not water. That way mobs can still see underwater.
if ((!a_LineOfSight && cBlockInfo::IsSolid(BlockID)) || (a_LineOfSight && (BlockID != E_BLOCK_AIR) && !IsBlockWater(BlockID)))
{
- BlockHitPosition = pos;
- int Normal = GetHitNormal(a_Start, End, pos);
+ BlockHitPosition = m_Pos;
+ int Normal = GetHitNormal(a_Start, End, m_Pos);
if (Normal > 0)
{
HitNormal = m_NormalTable()[static_cast<size_t>(Normal - 1)];
@@ -346,7 +346,7 @@ int cTracer::intersect3D_SegmentPlane(const Vector3f & a_Origin, const Vector3f
-int cTracer::GetHitNormal(const Vector3f & start, const Vector3f & end, const Vector3i & a_BlockPos)
+int cTracer::GetHitNormal(const Vector3f & a_Start, const Vector3f & a_End, const Vector3i & a_BlockPos)
{
Vector3i SmallBlockPos = a_BlockPos;
BLOCKTYPE BlockID = static_cast<BLOCKTYPE>(m_World->GetBlock(a_BlockPos.x, a_BlockPos.y, a_BlockPos.z));
@@ -359,19 +359,19 @@ int cTracer::GetHitNormal(const Vector3f & start, const Vector3f & end, const Ve
Vector3f BlockPos;
BlockPos = Vector3f(SmallBlockPos);
- Vector3f Look = (end - start);
+ Vector3f Look = (a_End - a_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);
+ int Lines = LinesCross(a_Start.x, a_Start.y, a_End.x, a_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);
+ Lines = LinesCross(a_Start.x, a_Start.z, a_End.x, a_End.z, BlockPos.x, BlockPos.z, BlockPos.x, BlockPos.z + 1);
if (Lines == 1)
{
- intersect3D_SegmentPlane(start, end, BlockPos, Vector3f(-1, 0, 0));
+ intersect3D_SegmentPlane(a_Start, a_End, BlockPos, Vector3f(-1, 0, 0));
return 1;
}
}
@@ -379,13 +379,13 @@ int cTracer::GetHitNormal(const Vector3f & start, const Vector3f & end, const Ve
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);
+ int Lines = LinesCross(a_Start.z, a_Start.y, a_End.z, a_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);
+ Lines = LinesCross(a_Start.z, a_Start.x, a_End.z, a_End.x, BlockPos.z, BlockPos.x, BlockPos.z, BlockPos.x + 1);
if (Lines == 1)
{
- intersect3D_SegmentPlane(start, end, BlockPos, Vector3f(0, 0, -1));
+ intersect3D_SegmentPlane(a_Start, a_End, BlockPos, Vector3f(0, 0, -1));
return 2;
}
}
@@ -393,13 +393,13 @@ int cTracer::GetHitNormal(const Vector3f & start, const Vector3f & end, const Ve
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);
+ int Lines = LinesCross(a_Start.x, a_Start.y, a_End.x, a_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);
+ Lines = LinesCross(a_Start.x, a_Start.z, a_End.x, a_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));
+ intersect3D_SegmentPlane(a_Start, a_End, BlockPos + Vector3f(1, 0, 0), Vector3f(1, 0, 0));
return 3;
}
}
@@ -407,13 +407,13 @@ int cTracer::GetHitNormal(const Vector3f & start, const Vector3f & end, const Ve
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);
+ int Lines = LinesCross(a_Start.z, a_Start.y, a_End.z, a_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);
+ Lines = LinesCross(a_Start.z, a_Start.x, a_End.z, a_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));
+ intersect3D_SegmentPlane(a_Start, a_End, BlockPos + Vector3f(0, 0, 1), Vector3f(0, 0, 1));
return 4;
}
}
@@ -421,13 +421,13 @@ int cTracer::GetHitNormal(const Vector3f & start, const Vector3f & end, const Ve
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);
+ int Lines = LinesCross(a_Start.y, a_Start.x, a_End.y, a_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);
+ Lines = LinesCross(a_Start.y, a_Start.z, a_End.y, a_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));
+ intersect3D_SegmentPlane(a_Start, a_End, BlockPos + Vector3f(0, 1, 0), Vector3f(0, 1, 0));
return 5;
}
}
@@ -435,13 +435,13 @@ int cTracer::GetHitNormal(const Vector3f & start, const Vector3f & end, const Ve
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);
+ int Lines = LinesCross(a_Start.y, a_Start.x, a_End.y, a_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);
+ Lines = LinesCross(a_Start.y, a_Start.z, a_End.y, a_End.z, BlockPos.y, BlockPos.z, BlockPos.y, BlockPos.z + 1);
if (Lines == 1)
{
- intersect3D_SegmentPlane(start, end, BlockPos, Vector3f(0, -1, 0));
+ intersect3D_SegmentPlane(a_Start, a_End, BlockPos, Vector3f(0, -1, 0));
return 6;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-15 21:12:56 +0200