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Minor refactoring and opt. in IsIntersectingBox (#202)

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* Minor refactoring and opt. in IsIntersectingBox
This commit is contained in:
In-line 2017-11-07 17:53:45 +04:00 committed by Dmitry Novikov
parent 086403f822
commit f53452fee0
1 changed files with 24 additions and 22 deletions
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46
regamedll/dlls/bot/cs_bot.cpp
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@ -190,49 +190,51 @@ void CCSBot::Killed(entvars_t *pevAttacker, int iGib)
CBasePlayer::Killed(pevAttacker, iGib); CBasePlayer::Killed(pevAttacker, iGib);
} }
#define HI_X 0x01 // Return true if line segment intersects rectangular volume
#define LO_X 0x02 bool IsIntersectingBox(const Vector &start, const Vector &end, const Vector &boxMin, const Vector &boxMax)
#define HI_Y 0x04
#define LO_Y 0x08
#define HI_Z 0x10
#define LO_Z 0x20
// Return true if line segment intersects rectagular volume
bool IsIntersectingBox(const Vector *start, const Vector *end, const Vector *boxMin, const Vector *boxMax)
{ {
constexpr auto HI_X = BIT(1);
constexpr auto LO_X = BIT(2);
constexpr auto HI_Y = BIT(3);
constexpr auto LO_Y = BIT(4);
constexpr auto HI_Z = BIT(5);
constexpr auto LO_Z = BIT(6);
unsigned char startFlags = 0; unsigned char startFlags = 0;
unsigned char endFlags = 0; unsigned char endFlags = 0;
// classify start point // classify start point
if (start->x < boxMin->x) if (start.x < boxMin.x)
startFlags |= LO_X; startFlags |= LO_X;
if (start->x > boxMax->x) else if (start.x > boxMax.x)
startFlags |= HI_X; startFlags |= HI_X;
if (start->y < boxMin->y) if (start.y < boxMin.y)
startFlags |= LO_Y; startFlags |= LO_Y;
if (start->y > boxMax->y) else if (start.y > boxMax.y)
startFlags |= HI_Y; startFlags |= HI_Y;
if (start->z < boxMin->z) if (start.z < boxMin.z)
startFlags |= LO_Z; startFlags |= LO_Z;
if (start->z > boxMax->z) else if (start.z > boxMax.z)
startFlags |= HI_Z; startFlags |= HI_Z;
// classify end point // classify end point
if (end->x < boxMin->x) if (end.x < boxMin.x)
endFlags |= LO_X; endFlags |= LO_X;
if (end->x > boxMax->x) else if (end.x > boxMax.x)
endFlags |= HI_X; endFlags |= HI_X;
if (end->y < boxMin->y) if (end.y < boxMin.y)
endFlags |= LO_Y; endFlags |= LO_Y;
if (end->y > boxMax->y) else if (end.y > boxMax.y)
endFlags |= HI_Y; endFlags |= HI_Y;
if (end->z < boxMin->z) if (end.z < boxMin.z)
endFlags |= LO_Z; endFlags |= LO_Z;
if (end->z > boxMax->z) else if (end.z > boxMax.z)
endFlags |= HI_Z; endFlags |= HI_Z;
// trivial reject // trivial reject
@ -299,7 +301,7 @@ void CCSBot::BotTouch(CBaseEntity *other)
if (m_pathLength) if (m_pathLength)
{ {
Vector goal = m_goalPosition + Vector(0, 0, HalfHumanHeight); Vector goal = m_goalPosition + Vector(0, 0, HalfHumanHeight);
breakIt = IsIntersectingBox(&pev->origin, &goal, &other->pev->absmin, &other->pev->absmax); breakIt = IsIntersectingBox(pev->origin, goal, other->pev->absmin, other->pev->absmax);
} }
if (breakIt) if (breakIt)