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migrate ALMOST everything from source tree into client
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riall
GitHub
198
source/client/common/AABB.cpp
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198
source/client/common/AABB.cpp
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/********************************************************************
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Minecraft: Pocket Edition - Decompilation Project
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Copyright (C) 2023 iProgramInCpp
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The following code is licensed under the BSD 1 clause license.
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SPDX-License-Identifier: BSD-1-Clause
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********************************************************************/
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#include "AABB.hpp"
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AABB::AABB()
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{
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}
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AABB::AABB(Vec3 _min, Vec3 _max) :
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min(_min), max(_max)
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{
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}
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AABB::AABB(float minX, float minY, float minZ, float maxX, float maxY, float maxZ) :
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min(minX, minY, minZ), max(maxX, maxY, maxZ)
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{
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}
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HitResult AABB::clip(const Vec3& vec1, const Vec3& vec2)
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{
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Vec3 clipMinX, clipMinY, clipMinZ;
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Vec3 clipMaxX, clipMaxY, clipMaxZ;
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bool bClipMinX, bClipMinY, bClipMinZ;
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bool bClipMaxX, bClipMaxY, bClipMaxZ;
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bClipMinX = vec1.clipX(vec2, min.x, clipMinX);
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bClipMaxX = vec1.clipX(vec2, max.x, clipMaxX);
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bClipMinY = vec1.clipX(vec2, min.y, clipMinY);
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bClipMaxY = vec1.clipX(vec2, max.y, clipMaxY);
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bClipMinZ = vec1.clipX(vec2, min.z, clipMinZ);
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bClipMaxZ = vec1.clipX(vec2, max.z, clipMaxZ);
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// <sigh>
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if (bClipMinX)
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{
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if (clipMinX.y < this->min.y || clipMinX.y > this->max.y || clipMinX.z < this->min.z)
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bClipMinX = 0;
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else
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bClipMinX = clipMinX.z <= this->max.z;
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}
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if (bClipMaxX)
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{
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if (clipMaxX.y < this->min.y || clipMaxX.y > this->max.y || clipMaxX.z < this->min.z)
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bClipMaxX = 0;
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else
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bClipMaxX = clipMaxX.z <= this->max.z;
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}
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if (bClipMinY)
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{
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if (clipMinY.x < this->min.x || clipMinY.x > this->max.x || clipMinY.z < this->min.z)
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bClipMinY = 0;
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else
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bClipMinY = clipMinY.z <= this->max.z;
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}
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if (bClipMaxY)
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{
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if (clipMaxY.x < this->min.x || clipMaxY.x > this->max.x || clipMaxY.z < this->min.z)
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bClipMaxY = 0;
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else
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bClipMaxY = clipMaxY.z <= this->max.z;
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}
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if (bClipMinZ)
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{
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if (clipMinZ.x < this->min.x || clipMinZ.x > this->max.x || clipMinZ.y < this->min.y)
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bClipMinZ = 0;
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else
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bClipMinZ = clipMinZ.y <= this->max.y;
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}
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if (bClipMaxZ)
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{
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if (clipMaxZ.x < this->min.x || clipMaxZ.x > this->max.x || clipMaxZ.y < this->min.y)
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bClipMaxZ = 0;
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else
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bClipMaxZ = clipMaxZ.y <= this->max.y;
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}
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// the collided side of our AABB
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HitResult::eHitSide collType = HitResult::NOHIT;
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// the preferred vector for our collision
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Vec3* pVec = nullptr;
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if (bClipMinX)
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pVec = &clipMinX, collType = HitResult::MINX;
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if (bClipMaxX)
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{
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if (!pVec || clipMinZ.distanceToSqr(vec1) < pVec->distanceToSqr(vec1))
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pVec = &clipMaxX, collType = HitResult::MAXX;
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}
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if (bClipMinY)
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{
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if (!pVec || clipMinY.distanceToSqr(vec1) < pVec->distanceToSqr(vec1))
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pVec = &clipMinY, collType = HitResult::MINY;
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}
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if (bClipMaxY)
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{
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if (!pVec || clipMaxY.distanceToSqr(vec1) < pVec->distanceToSqr(vec1))
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pVec = &clipMaxY, collType = HitResult::MAXY;
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}
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if (bClipMinZ)
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{
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if (!pVec || clipMinZ.distanceToSqr(vec1) < pVec->distanceToSqr(vec1))
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pVec = &clipMinZ, collType = HitResult::MINZ;
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}
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if (bClipMaxZ)
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{
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if (!pVec || clipMinZ.distanceToSqr(vec1) < pVec->distanceToSqr(vec1))
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pVec = &clipMaxZ, collType = HitResult::MAXZ;
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}
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if (!pVec)
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{
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// return a nothing burger
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return HitResult();
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}
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return HitResult(0, 0, 0, collType, *pVec);
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}
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float AABB::clipXCollide(const AABB& bud, float f) const
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{
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if (bud.max.y > min.y && bud.min.y < max.y && bud.max.z > min.z && bud.min.z < max.z)
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{
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if (f > 0.0f)
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{
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if (bud.max.x <= min.x)
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f = Mth::Min(min.x - bud.max.x, f);
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}
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if (f < 0.0f)
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{
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if (bud.min.x >= max.x)
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f = Mth::Max(max.x - bud.min.x, f);
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}
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}
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return f;
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}
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float AABB::clipYCollide(const AABB& bud, float f) const
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{
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if (bud.max.x > min.x && bud.min.x < max.x && bud.max.z > min.z && bud.min.z < max.z)
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{
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if (f > 0.0f)
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{
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if (bud.max.y <= min.y)
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f = Mth::Min(min.y - bud.max.y, f);
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}
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if (f < 0.0f)
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{
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if (bud.min.y >= max.y)
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f = Mth::Max(max.y - bud.min.y, f);
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}
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}
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return f;
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}
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float AABB::clipZCollide(const AABB& bud, float f) const
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{
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if (bud.max.x > min.x && bud.min.x < max.x && bud.max.y > min.y && bud.min.y < max.y)
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{
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if (f > 0.0f)
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{
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if (bud.max.z <= min.z)
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f = Mth::Min(min.z - bud.max.z, f);
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}
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if (f < 0.0f)
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{
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if (bud.min.z >= max.z)
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f = Mth::Max(max.z - bud.min.z, f);
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}
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}
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return f;
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}
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bool AABB::intersect(const AABB& other) const
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{
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return max.x > other.min.x
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&& min.x < other.max.x
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&& max.y > other.min.y
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&& min.y < other.max.y
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&& max.z > other.min.z
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&& min.z < other.max.z;
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}
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