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Clamp teleportation position (#4203)

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stone3311 2020-03-20 09:31:06 +01:00 committed by GitHub
parent 7d8f8c95ff
commit 0a1cfda02c
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1 changed files with 9 additions and 1 deletions
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10
src/Entities/Entity.cpp
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@ -2239,8 +2239,16 @@ Vector3d cEntity::GetLookVector(void) const
// Set position // Set position
void cEntity::SetPosition(const Vector3d & a_Position) void cEntity::SetPosition(const Vector3d & a_Position)
{ {
// Clamp the positions to exactly representable single-precision floating point values
// This is necessary to avoid rounding errors in the noise generator and overflows in the chunk loader
const double MaxFloat = std::pow(2, std::numeric_limits<float>().digits);
const double ClampedPosX = Clamp(a_Position.x, -MaxFloat, MaxFloat);
const double ClampedPosY = Clamp(a_Position.y, -MaxFloat, MaxFloat);
const double ClampedPosZ = Clamp(a_Position.z, -MaxFloat, MaxFloat);
m_LastPosition = m_Position; m_LastPosition = m_Position;
m_Position = a_Position; m_Position = {ClampedPosX, ClampedPosY, ClampedPosZ};
} }