metaforce/Runtime/CSortedLists.cpp

332 lines
12 KiB
C++

#include "Runtime/CSortedLists.hpp"
#include "Runtime/World/CActor.hpp"
#include <algorithm>
#include <cassert>
namespace metaforce {
namespace {
template <typename T, typename S>
auto AccessElement(T& arr, S idx) -> typename T::reference {
assert(std::size(arr) > static_cast<size_t>(idx) && idx >= 0);
return arr[idx];
}
template <typename T, typename S>
auto AccessElement(const T& arr, S idx) -> typename T::const_reference {
assert(std::size(arr) > static_cast<size_t>(idx) && idx >= 0);
return arr[idx];
}
} // Anonymous namespace
CSortedListManager::CSortedListManager() { Reset(); }
void CSortedListManager::Reset() {
x0_nodes.fill(SNode{});
for (auto& list : xb000_sortedLists) {
list.Reset();
}
}
void CSortedListManager::AddToLinkedList(s16 nodeId, s16& headId, s16& tailId) {
if (headId == -1) {
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;
}
AccessElement(x0_nodes, nodeId).x28_next = headId;
headId = nodeId;
}
}
void CSortedListManager::RemoveFromList(ESortedList list, s16 idx) {
const auto listIndex = static_cast<size_t>(list);
SSortedList& sl = xb000_sortedLists[listIndex];
while (idx < sl.x800_size - 1) {
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx + 1)).x1c_selfIdxs[listIndex] = idx;
AccessElement(sl.x0_ids, idx) = AccessElement(sl.x0_ids, idx + 1);
++idx;
}
--sl.x800_size;
}
void CSortedListManager::MoveInList(ESortedList list, s16 idx) {
const auto listIndex = static_cast<size_t>(list);
SSortedList& sl = xb000_sortedLists[listIndex];
while (true) {
if (idx > 0 && AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx - 1)).x4_box[listIndex] >
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx)).x4_box[listIndex]) {
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx - 1)).x1c_selfIdxs[listIndex] = idx;
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx)).x1c_selfIdxs[listIndex] = 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[listIndex] >=
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx)).x4_box[listIndex]) {
return;
}
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx + 1)).x1c_selfIdxs[listIndex] = idx;
AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx)).x1c_selfIdxs[listIndex] = idx + 1;
std::swap(AccessElement(sl.x0_ids, idx), AccessElement(sl.x0_ids, idx + 1));
++idx;
}
}
}
void CSortedListManager::InsertInList(ESortedList list, SNode& node) {
const auto listIndex = static_cast<size_t>(list);
SSortedList& sl = xb000_sortedLists[listIndex];
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[listIndex] < node.x4_box[listIndex]) {
/* 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[listIndex] = 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[listIndex] = s16(insIdx);
++sl.x800_size;
}
s16 CSortedListManager::FindInListUpper(ESortedList list, float value) const {
const auto listIndex = static_cast<size_t>(list);
const SSortedList& sl = xb000_sortedLists[listIndex];
int idx = 0;
for (int i = sl.x800_size; i > 0;) {
// Binary search cycle to find index
if (!(value < AccessElement(x0_nodes, AccessElement(sl.x0_ids, idx + i / 2)).x4_box[listIndex])) {
// Upper
idx = idx + i / 2 + 1;
i = i - i / 2 - 1;
} else {
// Lower
i /= 2;
}
}
return idx;
}
s16 CSortedListManager::FindInListLower(ESortedList list, float value) const {
const auto listIndex = static_cast<size_t>(list);
const SSortedList& sl = xb000_sortedLists[listIndex];
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[listIndex] < value) {
// Upper
idx = idx + i / 2 + 1;
i = i - i / 2 - 1;
} else {
// Lower
i /= 2;
}
}
return idx;
}
s16 CSortedListManager::ConstructIntersectionArray(const zeus::CAABox& aabb) {
const int minXa = FindInListLower(ESortedList::MinX, aabb.min.x());
const int maxXa = FindInListUpper(ESortedList::MinX, aabb.max.x());
const int minXb = FindInListLower(ESortedList::MaxX, aabb.min.x());
const int maxXb = FindInListUpper(ESortedList::MaxX, aabb.max.x());
const int xEnd = std::min(int(xb000_sortedLists[3].x800_size) - maxXb, minXa) + (maxXb + (maxXa - minXa) - minXb) / 2;
const int minYa = FindInListLower(ESortedList::MinY, aabb.min.y());
const int maxYa = FindInListUpper(ESortedList::MinY, aabb.max.y());
const int minYb = FindInListLower(ESortedList::MaxY, aabb.min.y());
const int maxYb = FindInListUpper(ESortedList::MaxY, aabb.max.y());
const int yEnd = std::min(int(xb000_sortedLists[4].x800_size) - maxYb, minYa) + (maxYb + (maxYa - minYa) - minYb) / 2;
const int minZa = FindInListLower(ESortedList::MinZ, aabb.min.z());
const int maxZa = FindInListUpper(ESortedList::MinZ, aabb.max.z());
const int minZb = FindInListLower(ESortedList::MaxZ, aabb.min.z());
const int maxZb = FindInListUpper(ESortedList::MaxZ, aabb.max.z());
const 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) {
const auto listAIndex = static_cast<size_t>(la);
const auto listBIndex = static_cast<size_t>(lb);
s16 headId = -1;
s16 tailId = -1;
for (int i = a; i < b; ++i) {
AddToLinkedList(AccessElement(xb000_sortedLists[listAIndex].x0_ids, i), headId, tailId);
}
for (int i = c; i < d; ++i) {
AddToLinkedList(AccessElement(xb000_sortedLists[listBIndex].x0_ids, i), headId, tailId);
}
if (a < xb000_sortedLists[listBIndex].x800_size - d) {
for (int i = 0; i < a; ++i) {
const s16 id = AccessElement(xb000_sortedLists[listAIndex].x0_ids, i);
if (AccessElement(x0_nodes, id).x4_box[listBIndex] > aabb[listBIndex]) {
AddToLinkedList(id, headId, tailId);
}
}
} else {
for (int i = d; i < xb000_sortedLists[listBIndex].x800_size; ++i) {
const s16 id = AccessElement(xb000_sortedLists[listBIndex].x0_ids, i);
if (AccessElement(x0_nodes, id).x4_box[listAIndex] < aabb[listAIndex]) {
AddToLinkedList(id, headId, tailId);
}
}
}
for (s16* id = &headId; *id != -1;) {
SNode& node = AccessElement(x0_nodes, *id);
if (node.x4_box[size_t(slA)] > aabb[size_t(slB)] || node.x4_box[size_t(slB)] < aabb[size_t(slA)] ||
node.x4_box[size_t(slC)] > aabb[size_t(slD)] || node.x4_box[size_t(slD)] < aabb[size_t(slC)]) {
/* Not intersecting; remove from chain */
*id = node.x28_next;
node.x28_next = -1;
continue;
}
id = &node.x28_next;
}
return headId;
}
void CSortedListManager::BuildNearList(EntityList& out, const zeus::CVector3f& pos,
const zeus::CVector3f& dir, float mag, const CMaterialFilter& filter,
const CActor* actor) {
if (mag == 0.f) {
mag = 8000.f;
}
const zeus::CVector3f ray = dir * mag;
const zeus::CVector3f sum = ray + pos;
const zeus::CVector3f maxs(std::max(pos.x(), sum.x()), std::max(pos.y(), sum.y()), std::max(pos.z(), sum.z()));
const zeus::CVector3f mins(std::min(sum.x(), pos.x()), std::min(sum.y(), pos.y()), std::min(sum.z(), pos.z()));
BuildNearList(out, zeus::CAABox(mins, maxs), filter, actor);
}
void CSortedListManager::BuildNearList(EntityList& out, const CActor& actor,
const zeus::CAABox& aabb) {
const CMaterialFilter& filter = actor.GetMaterialFilter();
s16 id = ConstructIntersectionArray(aabb);
while (id != -1) {
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;
node.x28_next = -1;
}
}
void CSortedListManager::BuildNearList(EntityList& out, const zeus::CAABox& aabb,
const CMaterialFilter& filter, const CActor* actor) {
s16 id = ConstructIntersectionArray(aabb);
while (id != -1) {
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;
node.x28_next = -1;
}
}
void CSortedListManager::Remove(const CActor* actor) {
SNode& node = AccessElement(x0_nodes, actor->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* actor, const zeus::CAABox& aabb) {
SNode& node = AccessElement(x0_nodes, actor->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* actor, const zeus::CAABox& aabb) {
SNode& node = AccessElement(x0_nodes, actor->GetUniqueId().Value());
if (node.x2a_populated) {
Move(actor, aabb);
return;
}
SNode newNode(actor, 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* actor) const {
if (!actor) {
return false;
}
const SNode& node = AccessElement(x0_nodes, actor->GetUniqueId().Value());
return node.x2a_populated;
}
} // namespace metaforce