stiffly
57 lines
2.8 KiB
C++
57 lines
2.8 KiB
C++
#include "Systems/InterpolationSystem.h"
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void InterpolationSystem::UpdateComponent(EntityWrapper& entity, ComponentWrapper& transform, double dt)
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{
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if (m_NextTransform.find(transform.EntityID) != m_NextTransform.end()) { // Exists in map
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m_NextTransform[transform.EntityID].interpolationTime += dt;
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Transform sTransform = m_NextTransform[transform.EntityID];
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double time = sTransform.interpolationTime;
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if (time > m_SnapshotInterval) {
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if (m_LastReceivedTransform.find(transform.EntityID) != m_LastReceivedTransform.end()) {
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m_NextTransform[transform.EntityID] = m_LastReceivedTransform[transform.EntityID];
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m_NextTransform[transform.EntityID].interpolationTime = time - m_SnapshotInterval;
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sTransform = m_NextTransform[transform.EntityID];
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m_LastReceivedTransform.erase(transform.EntityID);
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} else {
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m_NextTransform.erase(transform.EntityID);
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}
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}
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if (transform.Info.Name == "Transform") {
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// Position
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glm::vec3 nextPosition = sTransform.Position;
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glm::vec3 currentPosition = static_cast<glm::vec3>(transform["Position"]);
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(glm::vec3&)transform["Position"] += vectorInterpolation<glm::vec3>(currentPosition, nextPosition, sTransform.interpolationTime);
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// Orientation
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glm::quat nextOrientation = sTransform.Orientation;
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glm::quat currentOrientation = glm::quat(static_cast<glm::vec3>(transform["Orientation"]));
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(glm::vec3&)transform["Orientation"] = glm::eulerAngles(glm::slerp<float>(currentOrientation, nextOrientation, sTransform.interpolationTime / m_SnapshotInterval));
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// Scale
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glm::vec3 nextScale = sTransform.Scale;
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glm::vec3 currentScale = static_cast<glm::vec3>(transform["Scale"]);
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(glm::vec3&)transform["Scale"] += vectorInterpolation<glm::vec3>(currentScale, nextScale, sTransform.interpolationTime);
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}
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}
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}
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bool InterpolationSystem::OnInterpolate(const Events::Interpolate & e)
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{
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Transform transform;
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int offset = 0;
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// Read the data
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memcpy(&transform.Position, e.DataArray.get() + offset, sizeof(glm::vec3));
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offset += sizeof(glm::vec3);
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glm::vec3 tempOrientation;
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memcpy(&tempOrientation, e.DataArray.get() + offset, sizeof(glm::vec3));
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transform.Orientation = glm::quat(tempOrientation);
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offset += sizeof(glm::vec3);
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memcpy(&transform.Scale, e.DataArray.get() + offset, sizeof(glm::vec3));
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transform.interpolationTime = 0.0f;
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if (m_NextTransform.find(e.Entity) != m_NextTransform.end()) { // Did exist
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m_LastReceivedTransform[e.Entity] = transform;
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} else { // Did not
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m_NextTransform[e.Entity] = transform;
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}
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return false;
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}
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