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https://github.com/DarkflameUniverse/DarkflameServer
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357 lines
8.4 KiB
C++
357 lines
8.4 KiB
C++
#include "MovementAIComponent.h"
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#include <utility>
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#include <cmath>
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#include "ControllablePhysicsComponent.h"
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#include "BaseCombatAIComponent.h"
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#include "dpCommon.h"
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#include "dpWorld.h"
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#include "EntityManager.h"
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#include "SimplePhysicsComponent.h"
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#include "CDClientManager.h"
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#include "Game.h"
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#include "dZoneManager.h"
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#include "CDComponentsRegistryTable.h"
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#include "CDPhysicsComponentTable.h"
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#include "dNavMesh.h"
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namespace {
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/**
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* Cache of all lots and their respective speeds
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*/
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std::map<LOT, float> m_PhysicsSpeedCache;
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}
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MovementAIComponent::MovementAIComponent(Entity* parent, MovementAIInfo info) : Component(parent) {
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m_Info = info;
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m_AtFinalWaypoint = true;
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m_BaseCombatAI = nullptr;
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m_BaseCombatAI = m_Parent->GetComponent<BaseCombatAIComponent>();
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//Try and fix the insane values:
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if (m_Info.wanderRadius > 5.0f) m_Info.wanderRadius *= 0.5f;
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if (m_Info.wanderRadius > 8.0f) m_Info.wanderRadius = 8.0f;
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if (m_Info.wanderSpeed > 0.5f) m_Info.wanderSpeed *= 0.5f;
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m_BaseSpeed = GetBaseSpeed(m_Parent->GetLOT());
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m_NextWaypoint = m_Parent->GetPosition();
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m_Acceleration = 0.4f;
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m_PullingToPoint = false;
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m_PullPoint = NiPoint3Constant::ZERO;
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m_HaltDistance = 0;
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m_TimeToTravel = 0;
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m_TimeTravelled = 0;
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m_CurrentSpeed = 0;
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m_MaxSpeed = 0;
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m_LockRotation = false;
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}
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void MovementAIComponent::Update(const float deltaTime) {
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if (m_PullingToPoint) {
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const auto source = GetCurrentWaypoint();
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const auto speed = deltaTime * 2.5f;
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NiPoint3 velocity = (m_PullPoint - source) * speed;
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SetPosition(source + velocity);
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if (Vector3::DistanceSquared(m_Parent->GetPosition(), m_PullPoint) < std::pow(2, 2)) {
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m_PullingToPoint = false;
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}
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return;
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}
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// Are we done?
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if (AtFinalWaypoint()) return;
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if (m_HaltDistance > 0) {
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// Prevent us from hugging the target
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if (Vector3::DistanceSquared(ApproximateLocation(), GetDestination()) < std::pow(m_HaltDistance, 2)) {
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Stop();
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return;
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}
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}
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m_TimeTravelled += deltaTime;
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if (m_TimeTravelled < m_TimeToTravel) return;
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m_TimeTravelled = 0.0f;
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const auto source = GetCurrentWaypoint();
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SetPosition(source);
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NiPoint3 velocity = NiPoint3Constant::ZERO;
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if (m_Acceleration > 0 && m_BaseSpeed > 0 && AdvanceWaypointIndex()) // Do we have another waypoint to seek?
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{
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m_NextWaypoint = GetCurrentWaypoint();
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if (m_NextWaypoint == source) {
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m_TimeToTravel = 0.0f;
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goto nextAction;
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}
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if (m_CurrentSpeed < m_MaxSpeed) {
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m_CurrentSpeed += m_Acceleration;
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}
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if (m_CurrentSpeed > m_MaxSpeed) {
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m_CurrentSpeed = m_MaxSpeed;
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}
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const auto speed = m_CurrentSpeed * m_BaseSpeed; // scale speed based on base speed
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const auto delta = m_NextWaypoint - source;
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// Normalize the vector
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const auto length = delta.Length();
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if (length > 0) {
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velocity = (delta / length) * speed;
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}
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// Calclute the time it will take to reach the next waypoint with the current speed
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m_TimeTravelled = 0.0f;
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m_TimeToTravel = length / speed;
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SetRotation(NiQuaternion::LookAt(source, m_NextWaypoint));
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} else {
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// Check if there are more waypoints in the queue, if so set our next destination to the next waypoint
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if (m_CurrentPath.empty()) {
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Stop();
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return;
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}
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SetDestination(m_CurrentPath.top());
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m_CurrentPath.pop();
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}
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nextAction:
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SetVelocity(velocity);
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Game::entityManager->SerializeEntity(m_Parent);
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}
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const MovementAIInfo& MovementAIComponent::GetInfo() const {
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return m_Info;
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}
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bool MovementAIComponent::AdvanceWaypointIndex() {
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if (m_PathIndex >= m_InterpolatedWaypoints.size()) {
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return false;
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}
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m_PathIndex++;
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return true;
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}
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NiPoint3 MovementAIComponent::GetCurrentWaypoint() const {
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return m_PathIndex >= m_InterpolatedWaypoints.size() ? m_Parent->GetPosition() : m_InterpolatedWaypoints[m_PathIndex];
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}
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NiPoint3 MovementAIComponent::ApproximateLocation() const {
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auto source = m_Parent->GetPosition();
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if (AtFinalWaypoint()) return source;
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auto destination = m_NextWaypoint;
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auto percentageToWaypoint = m_TimeToTravel > 0 ? m_TimeTravelled / m_TimeToTravel : 0;
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auto approximation = source + ((destination - source) * percentageToWaypoint);
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if (dpWorld::IsLoaded()) {
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approximation.y = dpWorld::GetNavMesh()->GetHeightAtPoint(approximation);
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}
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return approximation;
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}
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bool MovementAIComponent::Warp(const NiPoint3& point) {
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Stop();
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NiPoint3 destination = point;
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if (dpWorld::IsLoaded()) {
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destination.y = dpWorld::GetNavMesh()->GetHeightAtPoint(point);
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if (std::abs(destination.y - point.y) > 3) {
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return false;
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}
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}
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SetPosition(destination);
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Game::entityManager->SerializeEntity(m_Parent);
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return true;
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}
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void MovementAIComponent::Stop() {
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if (AtFinalWaypoint()) return;
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SetPosition(ApproximateLocation());
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SetVelocity(NiPoint3Constant::ZERO);
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m_TimeToTravel = 0;
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m_TimeTravelled = 0;
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m_AtFinalWaypoint = true;
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m_InterpolatedWaypoints.clear();
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while (!m_CurrentPath.empty()) m_CurrentPath.pop();
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m_PathIndex = 0;
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m_CurrentSpeed = 0;
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Game::entityManager->SerializeEntity(m_Parent);
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}
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void MovementAIComponent::PullToPoint(const NiPoint3& point) {
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Stop();
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m_PullingToPoint = true;
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m_PullPoint = point;
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}
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void MovementAIComponent::SetPath(std::vector<NiPoint3> path) {
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if (path.empty()) return;
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std::for_each(path.rbegin(), path.rend() - 1, [this](const NiPoint3& point) {
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this->m_CurrentPath.push(point);
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});
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SetDestination(path.front());
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}
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float MovementAIComponent::GetBaseSpeed(LOT lot) {
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// Check if the lot is in the cache
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const auto& it = m_PhysicsSpeedCache.find(lot);
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if (it != m_PhysicsSpeedCache.end()) {
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return it->second;
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}
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CDComponentsRegistryTable* componentRegistryTable = CDClientManager::GetTable<CDComponentsRegistryTable>();
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CDPhysicsComponentTable* physicsComponentTable = CDClientManager::GetTable<CDPhysicsComponentTable>();
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int32_t componentID;
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CDPhysicsComponent* physicsComponent = nullptr;
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componentID = componentRegistryTable->GetByIDAndType(lot, eReplicaComponentType::CONTROLLABLE_PHYSICS, -1);
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if (componentID == -1) {
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componentID = componentRegistryTable->GetByIDAndType(lot, eReplicaComponentType::SIMPLE_PHYSICS, -1);
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}
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physicsComponent = physicsComponentTable->GetByID(componentID);
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// Client defaults speed to 10 and if the speed is also null in the table, it defaults to 10.
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float speed = physicsComponent != nullptr ? physicsComponent->speed : 10.0f;
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float delta = fabs(speed) - 1.0f;
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if (delta <= std::numeric_limits<float>::epsilon()) speed = 10.0f;
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m_PhysicsSpeedCache[lot] = speed;
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return speed;
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}
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void MovementAIComponent::SetPosition(const NiPoint3& value) {
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m_Parent->SetPosition(value);
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}
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void MovementAIComponent::SetRotation(const NiQuaternion& value) {
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if (!m_LockRotation) m_Parent->SetRotation(value);
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}
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void MovementAIComponent::SetVelocity(const NiPoint3& value) {
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auto* controllablePhysicsComponent = m_Parent->GetComponent<ControllablePhysicsComponent>();
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if (controllablePhysicsComponent != nullptr) {
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controllablePhysicsComponent->SetVelocity(value);
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return;
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}
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auto* simplePhysicsComponent = m_Parent->GetComponent<SimplePhysicsComponent>();
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if (simplePhysicsComponent != nullptr) {
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simplePhysicsComponent->SetVelocity(value);
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}
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}
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void MovementAIComponent::SetDestination(const NiPoint3& destination) {
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if (m_PullingToPoint) return;
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const auto location = ApproximateLocation();
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if (!AtFinalWaypoint()) {
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SetPosition(location);
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}
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std::vector<NiPoint3> computedPath;
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if (dpWorld::IsLoaded()) {
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computedPath = dpWorld::GetNavMesh()->GetPath(m_Parent->GetPosition(), destination, m_Info.wanderSpeed);
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}
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// Somehow failed
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if (computedPath.empty()) {
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// Than take 10 points between the current position and the destination and make that the path
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auto start = location;
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auto delta = destination - start;
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auto step = delta / 10.0f;
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for (int i = 0; i < 10; i++) {
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// TODO: Replace this with += when the NiPoint3::operator+= is fixed
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start = start + step;
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computedPath.push_back(start);
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}
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}
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m_InterpolatedWaypoints.clear();
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// Simply path
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for (auto& point : computedPath) {
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if (dpWorld::IsLoaded()) {
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point.y = dpWorld::GetNavMesh()->GetHeightAtPoint(point);
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}
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m_InterpolatedWaypoints.push_back(point);
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}
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m_PathIndex = 0;
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m_TimeTravelled = 0;
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m_TimeToTravel = 0;
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m_AtFinalWaypoint = false;
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}
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NiPoint3 MovementAIComponent::GetDestination() const {
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return m_InterpolatedWaypoints.empty() ? m_Parent->GetPosition() : m_InterpolatedWaypoints.back();
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}
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void MovementAIComponent::SetMaxSpeed(const float value) {
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if (value == m_MaxSpeed) return;
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m_MaxSpeed = value;
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m_Acceleration = value / 5;
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}
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