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metaforce/Runtime/CSortedLists.cpp

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#include "CSortedLists.hpp"
#include "World/CActor.hpp"
namespace urde
{
template <typename T, typename S>
static std::remove_reference_t<decltype(std::declval<T>()[0])>& AccessElement(T& arr, S idx)
{
assert(std::extent<T>::value > idx && idx >= 0);
return arr[idx];
}
CSortedListManager::CSortedListManager()
{
Reset();
}
void CSortedListManager::Reset()
{
std::fill(std::begin(x0_nodes), std::end(x0_nodes), SNode());
for (int i=0 ; i<6 ; ++i)
xb000_sortedLists[i].Reset();
}
void CSortedListManager::AddToLinkedList(s16 nodeId, s16& headId, s16& tailId) const
{
if (headId == -1)
{
const_cast<SNode&>(AccessElement(x0_nodes, nodeId)).x28_next = headId;
headId = nodeId;
tailId = nodeId;
}
else
{
if (AccessElement(x0_nodes, nodeId).x28_next != -1)
return;
if (tailId == nodeId)
return;
const_cast<SNode&>(AccessElement(x0_nodes, nodeId)).x28_next = headId;
headId = nodeId;
}
}
void CSortedListManager::RemoveFromList(ESortedList list, s16 idx)
{
SSortedList& sl = xb000_sortedLists[u32(list)];
while (idx < sl.x800_size - 1)
{
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx + 1)).x1c_selfIdxs[int(list)] = idx;
AccessElement(sl.x0_ids, idx) = AccessElement(sl.x0_ids, idx + 1);
++idx;
}
--sl.x800_size;
}
void CSortedListManager::MoveInList(ESortedList list, s16 idx)
{
SSortedList& sl = xb000_sortedLists[int(list)];
while (true)
{
if (idx > 0 &&
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx - 1)).x4_box[int(list)] >
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx)).x4_box[int(list)])
{
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx - 1)).x1c_selfIdxs[int(list)] = idx;
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx)).x1c_selfIdxs[int(list)] = idx - 1;
std::swap(AccessElement(sl.x0_ids, idx), AccessElement(sl.x0_ids, idx - 1));
--idx;
}
else
{
if (idx >= sl.x800_size - 1)
return;
if (AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx + 1)).x4_box[int(list)] >=
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx)).x4_box[int(list)])
return;
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx + 1)).x1c_selfIdxs[int(list)] = idx;
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx)).x1c_selfIdxs[int(list)] = idx + 1;
std::swap(AccessElement(sl.x0_ids, idx), AccessElement(sl.x0_ids, idx + 1));
++idx;
}
}
}
void CSortedListManager::InsertInList(ESortedList list, SNode& node)
{
SSortedList& sl = xb000_sortedLists[int(list)];
int insIdx = 0;
for (int i = sl.x800_size ; i > 0 ;)
{
/* Binary search cycle to find insert index */
if (AccessElement(x0_nodes, AccessElement(sl.x0_ids, insIdx + i / 2)).x4_box[int(list)] < node.x4_box[int(list)])
{
/* Upper */
insIdx = insIdx + i / 2 + 1;
i = i - i / 2 - 1;
}
else
{
/* Lower */
i /= 2;
}
}
/* Shift ids for insert */
for (int i = sl.x800_size ; i > insIdx ; --i)
{
AccessElement(x0_nodes, AccessElement(sl.x0_ids, i - 1)).x1c_selfIdxs[int(list)] = i;
AccessElement(sl.x0_ids, i) = AccessElement(sl.x0_ids, i - 1);
}
/* Do insert */
AccessElement(sl.x0_ids, insIdx) = node.x0_actor->GetUniqueId().Value();
node.x1c_selfIdxs[int(list)] = s16(insIdx);
++sl.x800_size;
}
s16 CSortedListManager::FindInListUpper(ESortedList list, float val) const
{
const SSortedList& sl = xb000_sortedLists[int(list)];
int idx = 0;
for (int i = sl.x800_size ; i > 0 ;)
{
/* Binary search cycle to find index */
if (!(val < AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx + i / 2)).x4_box[int(list)]))
{
/* Upper */
idx = idx + i / 2 + 1;
i = i - i / 2 - 1;
}
else
{
/* Lower */
i /= 2;
}
}
return idx;
}
s16 CSortedListManager::FindInListLower(ESortedList list, float val) const
{
const SSortedList& sl = xb000_sortedLists[int(list)];
int idx = 0;
for (int i = sl.x800_size ; i > 0 ;)
{
/* Binary search cycle to find index */
if (AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx + i / 2)).x4_box[int(list)] < val)
{
/* Upper */
idx = idx + i / 2 + 1;
i = i - i / 2 - 1;
}
else
{
/* Lower */
i /= 2;
}
}
return idx;
}
s16 CSortedListManager::ConstructIntersectionArray(const zeus::CAABox& aabb)
{
int minXa = FindInListLower(ESortedList::MinX, aabb.min.x);
int maxXa = FindInListUpper(ESortedList::MinX, aabb.max.x);
int minXb = FindInListLower(ESortedList::MaxX, aabb.min.x);
int maxXb = FindInListUpper(ESortedList::MaxX, aabb.max.x);
int xEnd = std::min(int(xb000_sortedLists[3].x800_size) - maxXb, minXa) + (maxXb + (maxXa - minXa) - minXb) / 2;
int minYa = FindInListLower(ESortedList::MinY, aabb.min.y);
int maxYa = FindInListUpper(ESortedList::MinY, aabb.max.y);
int minYb = FindInListLower(ESortedList::MaxY, aabb.min.y);
int maxYb = FindInListUpper(ESortedList::MaxY, aabb.max.y);
int yEnd = std::min(int(xb000_sortedLists[4].x800_size) - maxYb, minYa) + (maxYb + (maxYa - minYa) - minYb) / 2;
int minZa = FindInListLower(ESortedList::MinZ, aabb.min.z);
int maxZa = FindInListUpper(ESortedList::MinZ, aabb.max.z);
int minZb = FindInListLower(ESortedList::MaxZ, aabb.min.z);
int maxZb = FindInListUpper(ESortedList::MaxZ, aabb.max.z);
int zEnd = std::min(int(xb000_sortedLists[5].x800_size) - maxZb, minZa) + (maxZb + (maxZa - minZa) - minZb) / 2;
if (xEnd < yEnd && xEnd < zEnd)
{
return CalculateIntersections(ESortedList::MinX, ESortedList::MaxX, minXa, maxXa, minXb, maxXb,
ESortedList::MinY, ESortedList::MaxY, ESortedList::MinZ, ESortedList::MaxZ, aabb);
}
else if (yEnd < zEnd)
{
return CalculateIntersections(ESortedList::MinY, ESortedList::MaxY, minYa, maxYa, minYb, maxYb,
ESortedList::MinX, ESortedList::MaxX, ESortedList::MinZ, ESortedList::MaxZ, aabb);
}
else
{
return CalculateIntersections(ESortedList::MinZ, ESortedList::MaxZ, minZa, maxZa, minZb, maxZb,
ESortedList::MinX, ESortedList::MaxX, ESortedList::MinY, ESortedList::MaxY, aabb);
}
}
s16 CSortedListManager::CalculateIntersections(ESortedList la, ESortedList lb, s16 a, s16 b, s16 c, s16 d,
ESortedList slA, ESortedList slB, ESortedList slC, ESortedList slD,
const zeus::CAABox& aabb)
{
s16 headId = -1;
s16 tailId = -1;
for (int i=a ; i<b ; ++i)
AddToLinkedList(AccessElement(xb000_sortedLists[int(la)].x0_ids, i), headId, tailId);
for (int i=c ; i<d ; ++i)
AddToLinkedList(AccessElement(xb000_sortedLists[int(lb)].x0_ids, i), headId, tailId);
if (a < xb000_sortedLists[int(lb)].x800_size - d)
{
for (int i=0 ; i<a ; ++i)
{
s16 id = AccessElement(xb000_sortedLists[int(la)].x0_ids, i);
if (AccessElement(x0_nodes, id).x4_box[int(lb)] > aabb[int(lb)])
AddToLinkedList(id, headId, tailId);
}
}
else
{
for (int i=d ; i<xb000_sortedLists[int(lb)].x800_size ; ++i)
{
s16 id = AccessElement(xb000_sortedLists[int(lb)].x0_ids, i);
if (AccessElement(x0_nodes, id).x4_box[int(la)] < aabb[int(la)])
AddToLinkedList(id, headId, tailId);
}
}
for (s16* id = &headId ; *id != -1 ;)
{
SNode& node = AccessElement(x0_nodes, *id);
if (node.x4_box[int(slA)] > aabb[int(slB)] ||
node.x4_box[int(slB)] < aabb[int(slA)] ||
node.x4_box[int(slC)] > aabb[int(slD)] ||
node.x4_box[int(slD)] < aabb[int(slC)])
{
/* Not intersecting; remove from chain */
*id = node.x28_next;
node.x28_next = -1;
continue;
}
id = &node.x28_next;
}
return headId;
}
void CSortedListManager::BuildNearList(rstl::reserved_vector<TUniqueId, 1024>& out, const zeus::CVector3f& pos,
const zeus::CVector3f& dir, float mag, const CMaterialFilter& filter,
const CActor* actor) const
{
if (mag == 0.f)
mag = 8000.f;
zeus::CVector3f ray = dir * mag;
zeus::CVector3f sum = ray + pos;
zeus::CVector3f maxs(std::max(pos.z, sum.z), std::max(pos.y, sum.y), std::max(pos.x, sum.x));
zeus::CVector3f mins(std::min(sum.z, pos.z), std::min(sum.y, pos.y), std::min(sum.y, pos.y));
BuildNearList(out, zeus::CAABox(mins, maxs), filter, actor);
}
void CSortedListManager::BuildNearList(rstl::reserved_vector<TUniqueId, 1024>& out, const CActor& actor,
const zeus::CAABox& aabb) const
{
const CMaterialFilter& filter = actor.GetMaterialFilter();
s16 id = const_cast<CSortedListManager&>(*this).ConstructIntersectionArray(aabb);
while (id != -1)
{
const SNode& node = AccessElement(x0_nodes, id);
if (&actor != node.x0_actor && filter.Passes(node.x0_actor->GetMaterialList()) &&
node.x0_actor->GetMaterialFilter().Passes(actor.GetMaterialList()))
out.push_back(node.x0_actor->GetUniqueId());
id = node.x28_next;
const_cast<SNode&>(node).x28_next = -1;
}
}
void CSortedListManager::BuildNearList(rstl::reserved_vector<TUniqueId, 1024>& out, const zeus::CAABox& aabb,
const CMaterialFilter& filter, const CActor* actor) const
{
s16 id = const_cast<CSortedListManager&>(*this).ConstructIntersectionArray(aabb);
while (id != -1)
{
const SNode& node = AccessElement(x0_nodes, id);
if (actor != node.x0_actor && filter.Passes(node.x0_actor->GetMaterialList()))
out.push_back(node.x0_actor->GetUniqueId());
id = node.x28_next;
const_cast<SNode&>(node).x28_next = -1;
}
}
void CSortedListManager::Remove(const CActor* act)
{
SNode& node = AccessElement(x0_nodes, act->GetUniqueId().Value());
if (!node.x2a_populated)
return;
RemoveFromList(ESortedList::MinX, node.x1c_selfIdxs[0]);
RemoveFromList(ESortedList::MaxX, node.x1c_selfIdxs[3]);
RemoveFromList(ESortedList::MinY, node.x1c_selfIdxs[1]);
RemoveFromList(ESortedList::MaxY, node.x1c_selfIdxs[4]);
RemoveFromList(ESortedList::MinZ, node.x1c_selfIdxs[2]);
RemoveFromList(ESortedList::MaxZ, node.x1c_selfIdxs[5]);
node.x2a_populated = false;
}
void CSortedListManager::Move(const CActor* act, const zeus::CAABox& aabb)
{
SNode& node = AccessElement(x0_nodes, act->GetUniqueId().Value());
node.x4_box = aabb;
MoveInList(ESortedList::MinX, node.x1c_selfIdxs[0]);
MoveInList(ESortedList::MaxX, node.x1c_selfIdxs[3]);
MoveInList(ESortedList::MinY, node.x1c_selfIdxs[1]);
MoveInList(ESortedList::MaxY, node.x1c_selfIdxs[4]);
MoveInList(ESortedList::MinZ, node.x1c_selfIdxs[2]);
MoveInList(ESortedList::MaxZ, node.x1c_selfIdxs[5]);
}
void CSortedListManager::Insert(const CActor* act, const zeus::CAABox& aabb)
{
SNode& node = AccessElement(x0_nodes, act->GetUniqueId().Value());
if (node.x2a_populated)
{
Move(act, aabb);
return;
}
SNode newNode(act, aabb);
InsertInList(ESortedList::MinX, newNode);
InsertInList(ESortedList::MaxX, newNode);
InsertInList(ESortedList::MinY, newNode);
InsertInList(ESortedList::MaxY, newNode);
InsertInList(ESortedList::MinZ, newNode);
InsertInList(ESortedList::MaxZ, newNode);
node = newNode;
}
bool CSortedListManager::ActorInLists(const CActor* act) const
{
if (!act)
return false;
const SNode& node = AccessElement(x0_nodes, act->GetUniqueId().Value());
return node.x2a_populated;
}
}
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