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metaforce/Runtime/Camera/CCameraSpline.cpp

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#include "Runtime/Camera/CCameraSpline.hpp"
#include "Runtime/CStateManager.hpp"
#include "Runtime/World/CScriptCameraWaypoint.hpp"
#include "TCastTo.hpp" // Generated file, do not modify include path
namespace urde {
CCameraSpline::CCameraSpline(bool closedLoop) : x48_closedLoop(closedLoop) {}
void CCameraSpline::CalculateKnots(TUniqueId cameraId, const std::vector<SConnection>& connections,
CStateManager& mgr) {
const SConnection* lastConn = nullptr;
for (const SConnection& conn : connections) {
if (conn.x0_state == EScriptObjectState::CameraPath && conn.x4_msg == EScriptObjectMessage::Follow)
lastConn = &conn;
}
if (lastConn) {
TCastToPtr<CScriptCameraWaypoint> waypoint = mgr.ObjectById(mgr.GetIdForScript(lastConn->x8_objId));
x14_wpTracker.clear();
x14_wpTracker.reserve(4);
while (waypoint) {
auto search = std::find_if(x14_wpTracker.begin(), x14_wpTracker.end(),
[&waypoint](const auto& a) { return a == waypoint->GetUniqueId(); });
if (search == x14_wpTracker.end()) {
x14_wpTracker.push_back(waypoint->GetUniqueId());
waypoint = mgr.ObjectById(waypoint->GetRandomNextWaypointId(mgr));
}
}
Reset(x14_wpTracker.size());
x14_wpTracker.clear();
waypoint = mgr.ObjectById(mgr.GetIdForScript(lastConn->x8_objId));
while (waypoint) {
auto search = std::find_if(x14_wpTracker.begin(), x14_wpTracker.end(),
[&waypoint](const auto& a) { return a == waypoint->GetUniqueId(); });
if (search == x14_wpTracker.end()) {
x14_wpTracker.push_back(waypoint->GetUniqueId());
AddKnot(waypoint->GetTranslation(), waypoint->GetTransform().basis[1]);
waypoint = mgr.ObjectById(waypoint->GetRandomNextWaypointId(mgr));
}
}
}
}
void CCameraSpline::Initialize(TUniqueId camId, const std::vector<SConnection>& connections, CStateManager& mgr) {
CalculateKnots(camId, connections, mgr);
x44_length = CalculateSplineLength();
}
void CCameraSpline::Reset(int size) {
x4_positions.clear();
x24_t.clear();
x34_directions.clear();
if (size != 0) {
x4_positions.reserve(size);
x24_t.reserve(size);
x34_directions.reserve(size);
}
}
void CCameraSpline::AddKnot(const zeus::CVector3f& pos, const zeus::CVector3f& dir) {
x4_positions.push_back(pos);
x34_directions.push_back(dir);
}
void CCameraSpline::SetKnotPosition(int idx, const zeus::CVector3f& pos) {
if (idx >= x4_positions.size())
return;
x4_positions[idx] = pos;
}
const zeus::CVector3f& CCameraSpline::GetKnotPosition(int idx) const {
if (idx >= x4_positions.size())
return zeus::skZero3f;
return x4_positions[idx];
}
float CCameraSpline::GetKnotT(int idx) const {
if (idx >= x4_positions.size())
return 0.f;
return x24_t[idx];
}
float CCameraSpline::CalculateSplineLength() {
float ret = 0.f;
x24_t.clear();
if (x4_positions.size() > 0) {
zeus::CVector3f prevPoint = x4_positions[0];
float tDiv = 1.f / float(x4_positions.size() - 1);
for (size_t i = 0; i < x4_positions.size(); ++i) {
float subT = 0.f;
float baseT = i * tDiv;
x24_t.push_back(ret);
while (subT <= tDiv) {
subT += tDiv * 0.03125f;
zeus::CVector3f nextPoint = GetInterpolatedSplinePointByTime(baseT + subT, 1.f);
zeus::CVector3f delta = nextPoint - prevPoint;
if (delta.canBeNormalized()) {
prevPoint = nextPoint;
ret += delta.magnitude();
}
}
}
x24_t.push_back(ret);
if (x48_closedLoop) {
zeus::CVector3f delta = x4_positions[0] - x4_positions[x4_positions.size() - 1];
if (delta.canBeNormalized())
ret += delta.magnitude();
}
return ret;
}
return 0.f;
}
bool CCameraSpline::GetSurroundingPoints(int idx, rstl::reserved_vector<zeus::CVector3f, 4>& positions,
rstl::reserved_vector<zeus::CVector3f, 4>& directions) const {
if (x4_positions.size() <= 3 || idx < 0 || idx >= x4_positions.size())
return false;
if (idx > 0) {
positions.push_back(x4_positions[idx - 1]);
directions.push_back(x34_directions[idx - 1]);
} else if (x48_closedLoop) {
positions.push_back(x4_positions[x4_positions.size() - 1]);
directions.push_back(x34_directions[x4_positions.size() - 1]);
} else {
positions.push_back(x4_positions[0] - (x4_positions[1] - x4_positions[0]));
directions.push_back(x34_directions[0]);
}
positions.push_back(x4_positions[idx]);
directions.push_back(x34_directions[idx]);
if (idx + 1 >= x4_positions.size()) {
if (x48_closedLoop) {
positions.push_back(x4_positions[idx - x4_positions.size()]);
directions.push_back(x34_directions[idx - x4_positions.size()]);
} else {
positions.push_back(x4_positions[x4_positions.size() - 1] -
(x4_positions[x4_positions.size() - 2] - x4_positions[x4_positions.size() - 1]));
directions.push_back(x34_directions[x4_positions.size() - 1]);
}
} else {
positions.push_back(x4_positions[idx + 1]);
directions.push_back(x34_directions[idx + 1]);
}
if (idx + 2 >= x4_positions.size()) {
if (x48_closedLoop) {
positions.push_back(x4_positions[idx + 2 - x4_positions.size()]);
directions.push_back(x34_directions[idx + 2 - x4_positions.size()]);
} else {
positions.push_back(x4_positions[x4_positions.size() - 1] -
(x4_positions[x4_positions.size() - 2] - x4_positions[x4_positions.size() - 1]));
directions.push_back(x34_directions[x4_positions.size() - 1]);
}
} else {
positions.push_back(x4_positions[idx + 2]);
directions.push_back(x34_directions[idx + 2]);
}
return true;
}
zeus::CTransform CCameraSpline::GetInterpolatedSplinePointByLength(float pos) const {
if (x4_positions.empty())
return zeus::CTransform();
size_t baseIdx = 0;
size_t i;
for (i = 1; i < x4_positions.size(); ++i) {
if (x24_t[i] > pos) {
baseIdx = i - 1;
break;
}
}
if (i == x4_positions.size())
baseIdx = i - 1;
if (pos < 0.f)
baseIdx = 0;
if (pos >= x44_length) {
if (x48_closedLoop) {
pos -= x44_length;
baseIdx = 0;
} else {
baseIdx = x4_positions.size() - 2;
pos = x44_length;
}
}
float range;
if (baseIdx == x4_positions.size() - 1) {
if (x48_closedLoop)
range = x44_length - x24_t[baseIdx];
else
range = x44_length - x24_t[x4_positions.size() - 2];
} else {
range = x24_t[baseIdx + 1] - x24_t[baseIdx];
}
float t = zeus::clamp(0.f, (pos - x24_t[baseIdx]) / range, 1.f);
rstl::reserved_vector<zeus::CVector3f, 4> positions;
rstl::reserved_vector<zeus::CVector3f, 4> directions;
if (GetSurroundingPoints(baseIdx, positions, directions)) {
float f1 = zeus::clamp(-1.f, directions[1].dot(directions[2]), 1.f);
if (f1 >= 1.f) {
zeus::CTransform ret = zeus::lookAt(zeus::skZero3f, directions[2]);
ret.origin = zeus::getCatmullRomSplinePoint(positions[0], positions[1], positions[2], positions[3], t);
return ret;
} else {
zeus::CTransform ret = zeus::lookAt(
zeus::skZero3f,
zeus::CQuaternion::lookAt(directions[1], directions[2], std::acos(f1) * t).transform(directions[1]));
ret.origin = zeus::getCatmullRomSplinePoint(positions[0], positions[1], positions[2], positions[3], t);
return ret;
}
}
return zeus::CTransform();
}
zeus::CVector3f CCameraSpline::GetInterpolatedSplinePointByTime(float time, float range) const {
if (x4_positions.empty())
return {};
rstl::reserved_vector<zeus::CVector3f, 4> positions;
rstl::reserved_vector<zeus::CVector3f, 4> directions;
float rangeFac = range / float(x4_positions.size() - 1);
int baseIdx = std::min(int(x4_positions.size() - 1), int(time / rangeFac));
if (GetSurroundingPoints(baseIdx, positions, directions))
return zeus::getCatmullRomSplinePoint(positions[0], positions[1], positions[2], positions[3],
(time - float(baseIdx) * rangeFac) / rangeFac);
return {};
}
float CCameraSpline::FindClosestLengthOnSpline(float time, const zeus::CVector3f& p) const {
float ret = -1.f;
float minLenDelta = 10000.f;
float minMag = 10000.f;
size_t iterations = x4_positions.size() - 1;
if (x48_closedLoop)
iterations += 1;
for (size_t i = 0; i < iterations; ++i) {
const zeus::CVector3f& thisPos = x4_positions[i];
const zeus::CVector3f* nextPos;
if (!x48_closedLoop) {
nextPos = &x4_positions[i + 1];
} else {
if (i == x4_positions.size() - 1)
nextPos = &x4_positions[0];
else
nextPos = &x4_positions[i + 1];
}
zeus::CVector3f delta = *nextPos - thisPos;
zeus::CVector3f nextDelta;
zeus::CVector3f revDelta = thisPos - *nextPos;
zeus::CVector3f nextRevDelta;
if (i != 0) {
nextDelta = delta + thisPos - x4_positions[i - 1];
} else {
zeus::CVector3f extrap = x4_positions[0] - x4_positions[1] + x4_positions[0];
if (x48_closedLoop)
extrap = x4_positions.back();
nextDelta = delta + thisPos - extrap;
}
nextDelta.normalize();
if (i < x4_positions.size() - 2) {
nextRevDelta = revDelta + *nextPos - x4_positions[i + 2];
} else {
zeus::CVector3f extrap;
if (x48_closedLoop) {
if (i == iterations - 1)
extrap = x4_positions[1];
else
extrap = x4_positions[0];
} else {
extrap = x4_positions[i + 1] - x4_positions[i] + x4_positions[i + 1];
}
nextRevDelta = revDelta + *nextPos - extrap;
}
nextRevDelta.normalize();
nextDelta.normalize();
nextRevDelta.normalize();
zeus::CVector3f ptToPlayer = p - thisPos;
float proj = ptToPlayer.dot(nextDelta) / nextDelta.dot(delta.normalized());
zeus::CVector3f nextPtToPlayer = p - *nextPos;
float nextProj = nextPtToPlayer.dot(nextRevDelta) / nextRevDelta.dot(revDelta.normalized());
float t = proj / (proj + nextProj);
if (!x48_closedLoop) {
if (i == 0 && t < 0.f)
t = 0.f;
if (i == x4_positions.size() - 2 && t > 1.f)
t = 1.f;
}
if (t >= 0.f && t <= 1.f) {
float tLen;
if (i == x4_positions.size() - 1)
tLen = x44_length - x24_t[i];
else
tLen = x24_t[i + 1] - x24_t[i];
float lenT = t * tLen + x24_t[i];
zeus::CVector3f pointDelta = p - GetInterpolatedSplinePointByLength(lenT).origin;
float mag = 0.f;
if (pointDelta.canBeNormalized())
mag = pointDelta.magnitude();
float lenDelta = std::fabs(lenT - time);
if (x48_closedLoop && lenDelta > x44_length - lenDelta)
lenDelta = x44_length - lenDelta;
if (zeus::close_enough(std::fabs(mag - minMag), 0.f)) {
if (lenDelta < minLenDelta) {
ret = lenT;
minLenDelta = lenDelta;
}
} else {
if (mag < minMag) {
ret = lenT;
minLenDelta = lenDelta;
minMag = mag;
}
}
}
}
return std::max(ret, 0.f);
}
float CCameraSpline::ValidateLength(float t) const {
if (x48_closedLoop) {
while (t >= x44_length)
t -= x44_length;
while (t < 0.f)
t += x44_length;
return t;
} else {
return zeus::clamp(0.f, t, x44_length);
}
}
float CCameraSpline::ClampLength(const zeus::CVector3f& pos, bool collide, const CMaterialFilter& filter,
const CStateManager& mgr) const {
if (x4_positions.empty())
return 0.f;
if (x48_closedLoop)
return 0.f;
zeus::CVector3f deltaA = pos - x4_positions.front();
zeus::CVector3f deltaB = pos - x4_positions.back();
float magA = deltaA.magnitude();
float magB = deltaB.magnitude();
if (!deltaA.canBeNormalized())
return 0.f;
if (!deltaB.canBeNormalized())
return x44_length;
if (collide) {
bool collideA = mgr.RayStaticIntersection(x4_positions.front(), deltaA.normalized(), magA, filter).IsValid();
bool collideB = mgr.RayStaticIntersection(x4_positions.back(), deltaB.normalized(), magB, filter).IsValid();
if (collideA)
return x44_length;
if (collideB)
return 0.f;
}
if (magA < magB)
return 0.f;
else
return x44_length;
}
} // namespace urde
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