mirror of https://github.com/OpenMW/openmw.git
Cache navmesh tiles
Use LRU modification to hold currently used items. Use RecastMesh binary data for item key. Store original pointer of btCollisionShape in user pointer to make available it as an identifier within all duplicates. Use pointer to heights data array for btHeightfieldTerrainShape.pull/1633/head
elsid
6 years ago
parent
69b5834c64
commit
ed73d130f9
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#include "operators.hpp"
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#include <components/detournavigator/navmeshtilescache.hpp>
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#include <components/detournavigator/exceptions.hpp>
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#include <components/detournavigator/recastmesh.hpp>
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#include <LinearMath/btTransform.h>
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#include <gtest/gtest.h>
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namespace DetourNavigator
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{
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static inline bool operator ==(const NavMeshDataRef& lhs, const NavMeshDataRef& rhs)
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{
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return std::make_pair(lhs.mValue, lhs.mSize) == std::make_pair(rhs.mValue, rhs.mSize);
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}
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}
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namespace
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{
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using namespace testing;
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using namespace DetourNavigator;
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struct DetourNavigatorNavMeshTilesCacheTest : Test
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{
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const osg::Vec3f mAgentHalfExtents {1, 2, 3};
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const TilePosition mTilePosition {0, 0};
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const std::vector<int> mIndices {{0, 1, 2}};
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const std::vector<float> mVertices {{0, 0, 0, 1, 0, 0, 1, 1, 0}};
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const std::vector<AreaType> mAreaTypes {1, AreaType_ground};
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const std::vector<RecastMesh::Water> mWater {};
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const std::size_t mTrianglesPerChunk {1};
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const RecastMesh mRecastMesh {mIndices, mVertices, mAreaTypes, mWater, mTrianglesPerChunk};
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const std::vector<OffMeshConnection> mOffMeshConnections {};
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unsigned char* const mData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
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NavMeshData mNavMeshData {mData, 1};
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};
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, get_for_empty_cache_should_return_empty_value)
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{
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const std::size_t maxSize = 0;
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NavMeshTilesCache cache(maxSize);
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EXPECT_FALSE(cache.get(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, set_for_not_enought_cache_size_should_return_empty_value)
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{
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const std::size_t maxSize = 0;
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NavMeshTilesCache cache(maxSize);
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EXPECT_FALSE(cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections,
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std::move(mNavMeshData)));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, set_should_return_cached_value)
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{
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const std::size_t maxSize = 1;
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NavMeshTilesCache cache(maxSize);
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const auto result = cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections,
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std::move(mNavMeshData));
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EXPECT_EQ(result.get(), (NavMeshDataRef {mData, 1}));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, set_existing_element_should_throw_exception)
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{
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const std::size_t maxSize = 2;
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NavMeshTilesCache cache(maxSize);
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const auto anotherData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
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NavMeshData anotherNavMeshData {anotherData, 1};
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cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections, std::move(mNavMeshData));
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EXPECT_THROW(
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cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections, std::move(anotherNavMeshData)),
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InvalidArgument
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);
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, get_should_return_cached_value)
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{
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const std::size_t maxSize = 1;
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NavMeshTilesCache cache(maxSize);
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cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections, std::move(mNavMeshData));
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const auto result = cache.get(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections);
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ASSERT_TRUE(result);
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EXPECT_EQ(result.get(), (NavMeshDataRef {mData, 1}));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, get_for_cache_miss_by_agent_half_extents_should_return_empty_value)
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{
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const std::size_t maxSize = 1;
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NavMeshTilesCache cache(maxSize);
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const osg::Vec3f unexsistentAgentHalfExtents {1, 1, 1};
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cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections, std::move(mNavMeshData));
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EXPECT_FALSE(cache.get(unexsistentAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, get_for_cache_miss_by_tile_position_should_return_empty_value)
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{
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const std::size_t maxSize = 1;
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NavMeshTilesCache cache(maxSize);
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const TilePosition unexistentTilePosition {1, 1};
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cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections, std::move(mNavMeshData));
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EXPECT_FALSE(cache.get(mAgentHalfExtents, unexistentTilePosition, mRecastMesh, mOffMeshConnections));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, get_for_cache_miss_by_recast_mesh_should_return_empty_value)
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{
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const std::size_t maxSize = 1;
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NavMeshTilesCache cache(maxSize);
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const std::vector<RecastMesh::Water> water {1, RecastMesh::Water {1, btTransform::getIdentity()}};
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const RecastMesh unexistentRecastMesh {mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
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cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections, std::move(mNavMeshData));
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EXPECT_FALSE(cache.get(mAgentHalfExtents, mTilePosition, unexistentRecastMesh, mOffMeshConnections));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, set_should_replace_unused_value)
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{
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const std::size_t maxSize = 1;
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NavMeshTilesCache cache(maxSize);
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const std::vector<RecastMesh::Water> water {1, RecastMesh::Water {1, btTransform::getIdentity()}};
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const RecastMesh anotherRecastMesh {mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
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const auto anotherData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
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NavMeshData anotherNavMeshData {anotherData, 1};
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cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections, std::move(mNavMeshData));
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const auto result = cache.set(mAgentHalfExtents, mTilePosition, anotherRecastMesh, mOffMeshConnections,
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std::move(anotherNavMeshData));
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ASSERT_TRUE(result);
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EXPECT_EQ(result.get(), (NavMeshDataRef {anotherData, 1}));
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EXPECT_FALSE(cache.get(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, set_should_not_replace_used_value)
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{
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const std::size_t maxSize = 1;
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NavMeshTilesCache cache(maxSize);
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const std::vector<RecastMesh::Water> water {1, RecastMesh::Water {1, btTransform::getIdentity()}};
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const RecastMesh anotherRecastMesh {mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
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const auto anotherData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
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NavMeshData anotherNavMeshData {anotherData, 1};
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const auto value = cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections,
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std::move(mNavMeshData));
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EXPECT_FALSE(cache.set(mAgentHalfExtents, mTilePosition, anotherRecastMesh, mOffMeshConnections,
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std::move(anotherNavMeshData)));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, set_should_replace_unused_least_recently_set_value)
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{
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const std::size_t maxSize = 2;
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NavMeshTilesCache cache(maxSize);
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const std::vector<RecastMesh::Water> leastRecentlySetWater {1, RecastMesh::Water {1, btTransform::getIdentity()}};
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const RecastMesh leastRecentlySetRecastMesh {mIndices, mVertices, mAreaTypes, leastRecentlySetWater,
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mTrianglesPerChunk};
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const auto leastRecentlySetData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
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NavMeshData leastRecentlySetNavMeshData {leastRecentlySetData, 1};
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const std::vector<RecastMesh::Water> mostRecentlySetWater {1, RecastMesh::Water {2, btTransform::getIdentity()}};
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const RecastMesh mostRecentlySetRecastMesh {mIndices, mVertices, mAreaTypes, mostRecentlySetWater,
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mTrianglesPerChunk};
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const auto mostRecentlySetData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
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NavMeshData mostRecentlySetNavMeshData {mostRecentlySetData, 1};
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ASSERT_TRUE(cache.set(mAgentHalfExtents, mTilePosition, leastRecentlySetRecastMesh, mOffMeshConnections,
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std::move(leastRecentlySetNavMeshData)));
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ASSERT_TRUE(cache.set(mAgentHalfExtents, mTilePosition, mostRecentlySetRecastMesh, mOffMeshConnections,
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std::move(mostRecentlySetNavMeshData)));
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const auto result = cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections,
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std::move(mNavMeshData));
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EXPECT_EQ(result.get(), (NavMeshDataRef {mData, 1}));
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EXPECT_FALSE(cache.get(mAgentHalfExtents, mTilePosition, leastRecentlySetRecastMesh, mOffMeshConnections));
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EXPECT_TRUE(cache.get(mAgentHalfExtents, mTilePosition, mostRecentlySetRecastMesh, mOffMeshConnections));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, set_should_replace_unused_least_recently_used_value)
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{
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const std::size_t maxSize = 2;
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NavMeshTilesCache cache(maxSize);
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const std::vector<RecastMesh::Water> leastRecentlyUsedWater {1, RecastMesh::Water {1, btTransform::getIdentity()}};
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const RecastMesh leastRecentlyUsedRecastMesh {mIndices, mVertices, mAreaTypes, leastRecentlyUsedWater,
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mTrianglesPerChunk};
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const auto leastRecentlyUsedData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
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NavMeshData leastRecentlyUsedNavMeshData {leastRecentlyUsedData, 1};
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const std::vector<RecastMesh::Water> mostRecentlyUsedWater {1, RecastMesh::Water {2, btTransform::getIdentity()}};
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const RecastMesh mostRecentlyUsedRecastMesh {mIndices, mVertices, mAreaTypes, mostRecentlyUsedWater,
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mTrianglesPerChunk};
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const auto mostRecentlyUsedData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
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NavMeshData mostRecentlyUsedNavMeshData {mostRecentlyUsedData, 1};
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cache.set(mAgentHalfExtents, mTilePosition, leastRecentlyUsedRecastMesh, mOffMeshConnections,
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std::move(leastRecentlyUsedNavMeshData));
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cache.set(mAgentHalfExtents, mTilePosition, mostRecentlyUsedRecastMesh, mOffMeshConnections,
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std::move(mostRecentlyUsedNavMeshData));
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{
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const auto value = cache.get(mAgentHalfExtents, mTilePosition, leastRecentlyUsedRecastMesh, mOffMeshConnections);
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ASSERT_TRUE(value);
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ASSERT_EQ(value.get(), (NavMeshDataRef {leastRecentlyUsedData, 1}));
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}
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{
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const auto value = cache.get(mAgentHalfExtents, mTilePosition, mostRecentlyUsedRecastMesh, mOffMeshConnections);
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ASSERT_TRUE(value);
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ASSERT_EQ(value.get(), (NavMeshDataRef {mostRecentlyUsedData, 1}));
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}
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const auto result = cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections,
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std::move(mNavMeshData));
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EXPECT_EQ(result.get(), (NavMeshDataRef {mData, 1}));
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EXPECT_FALSE(cache.get(mAgentHalfExtents, mTilePosition, leastRecentlyUsedRecastMesh, mOffMeshConnections));
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EXPECT_TRUE(cache.get(mAgentHalfExtents, mTilePosition, mostRecentlyUsedRecastMesh, mOffMeshConnections));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, set_should_not_replace_unused_least_recently_used_value_when_item_does_not_not_fit_cache_max_size)
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{
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const std::size_t maxSize = 1;
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NavMeshTilesCache cache(maxSize);
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const std::vector<RecastMesh::Water> water {1, RecastMesh::Water {1, btTransform::getIdentity()}};
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const RecastMesh tooLargeRecastMesh {mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
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const auto tooLargeData = reinterpret_cast<unsigned char*>(dtAlloc(2, DT_ALLOC_PERM));
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NavMeshData tooLargeNavMeshData {tooLargeData, 2};
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cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections, std::move(mNavMeshData));
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EXPECT_FALSE(cache.set(mAgentHalfExtents, mTilePosition, tooLargeRecastMesh, mOffMeshConnections,
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std::move(tooLargeNavMeshData)));
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EXPECT_TRUE(cache.get(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, set_should_not_replace_unused_least_recently_used_value_when_item_does_not_not_fit_size_of_unused_items)
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{
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const std::size_t maxSize = 2;
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NavMeshTilesCache cache(maxSize);
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const std::vector<RecastMesh::Water> anotherWater {1, RecastMesh::Water {1, btTransform::getIdentity()}};
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const RecastMesh anotherRecastMesh {mIndices, mVertices, mAreaTypes, anotherWater, mTrianglesPerChunk};
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const auto anotherData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
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NavMeshData anotherNavMeshData {anotherData, 1};
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const std::vector<RecastMesh::Water> tooLargeWater {1, RecastMesh::Water {2, btTransform::getIdentity()}};
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const RecastMesh tooLargeRecastMesh {mIndices, mVertices, mAreaTypes, tooLargeWater, mTrianglesPerChunk};
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const auto tooLargeData = reinterpret_cast<unsigned char*>(dtAlloc(2, DT_ALLOC_PERM));
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NavMeshData tooLargeNavMeshData {tooLargeData, 2};
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const auto value = cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections,
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std::move(mNavMeshData));
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ASSERT_TRUE(value);
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ASSERT_TRUE(cache.set(mAgentHalfExtents, mTilePosition, anotherRecastMesh, mOffMeshConnections,
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std::move(anotherNavMeshData)));
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EXPECT_FALSE(cache.set(mAgentHalfExtents, mTilePosition, tooLargeRecastMesh, mOffMeshConnections,
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std::move(tooLargeNavMeshData)));
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EXPECT_TRUE(cache.get(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections));
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EXPECT_TRUE(cache.get(mAgentHalfExtents, mTilePosition, anotherRecastMesh, mOffMeshConnections));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, release_used_after_set_then_used_by_get_item_should_left_this_item_available)
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{
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const std::size_t maxSize = 1;
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NavMeshTilesCache cache(maxSize);
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const std::vector<RecastMesh::Water> water {1, RecastMesh::Water {1, btTransform::getIdentity()}};
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const RecastMesh anotherRecastMesh {mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
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const auto anotherData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
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NavMeshData anotherNavMeshData {anotherData, 1};
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const auto firstCopy = cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections, std::move(mNavMeshData));
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ASSERT_TRUE(firstCopy);
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{
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const auto secondCopy = cache.get(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections);
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ASSERT_TRUE(secondCopy);
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}
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EXPECT_FALSE(cache.set(mAgentHalfExtents, mTilePosition, anotherRecastMesh, mOffMeshConnections,
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std::move(anotherNavMeshData)));
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EXPECT_TRUE(cache.get(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections));
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}
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TEST_F(DetourNavigatorNavMeshTilesCacheTest, release_twice_used_item_should_left_this_item_available)
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{
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const std::size_t maxSize = 1;
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NavMeshTilesCache cache(maxSize);
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const std::vector<RecastMesh::Water> water {1, RecastMesh::Water {1, btTransform::getIdentity()}};
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const RecastMesh anotherRecastMesh {mIndices, mVertices, mAreaTypes, water, mTrianglesPerChunk};
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const auto anotherData = reinterpret_cast<unsigned char*>(dtAlloc(1, DT_ALLOC_PERM));
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NavMeshData anotherNavMeshData {anotherData, 1};
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cache.set(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections, std::move(mNavMeshData));
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const auto firstCopy = cache.get(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections);
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ASSERT_TRUE(firstCopy);
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{
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const auto secondCopy = cache.get(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections);
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ASSERT_TRUE(secondCopy);
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}
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EXPECT_FALSE(cache.set(mAgentHalfExtents, mTilePosition, anotherRecastMesh, mOffMeshConnections,
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std::move(anotherNavMeshData)));
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EXPECT_TRUE(cache.get(mAgentHalfExtents, mTilePosition, mRecastMesh, mOffMeshConnections));
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}
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}
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@ -0,0 +1,35 @@
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#ifndef OPENMW_COMPONENTS_DETOURNAVIGATOR_NAVMESHDATA_H
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#define OPENMW_COMPONENTS_DETOURNAVIGATOR_NAVMESHDATA_H
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#include <DetourAlloc.h>
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#include <algorithm>
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#include <memory>
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namespace DetourNavigator
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{
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struct NavMeshDataValueDeleter
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{
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void operator ()(unsigned char* value) const
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{
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dtFree(value);
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}
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};
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using NavMeshDataValue = std::unique_ptr<unsigned char, NavMeshDataValueDeleter>;
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struct NavMeshData
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{
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NavMeshDataValue mValue;
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int mSize;
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NavMeshData() = default;
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NavMeshData(unsigned char* value, int size)
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: mValue(value)
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, mSize(size)
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{}
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};
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}
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#endif
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@ -0,0 +1,158 @@
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#include "navmeshtilescache.hpp"
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#include "exceptions.hpp"
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namespace DetourNavigator
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{
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namespace
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{
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inline std::string makeNavMeshKey(const RecastMesh& recastMesh,
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const std::vector<OffMeshConnection>& offMeshConnections)
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{
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std::string result;
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result.reserve(
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recastMesh.getIndices().size() * sizeof(int)
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+ recastMesh.getVertices().size() * sizeof(float)
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+ recastMesh.getAreaTypes().size() * sizeof(AreaType)
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+ recastMesh.getWater().size() * sizeof(RecastMesh::Water)
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+ offMeshConnections.size() * sizeof(OffMeshConnection)
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);
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std::copy(
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reinterpret_cast<const char*>(recastMesh.getIndices().data()),
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reinterpret_cast<const char*>(recastMesh.getIndices().data() + recastMesh.getIndices().size()),
|
||||
std::back_inserter(result)
|
||||
);
|
||||
std::copy(
|
||||
reinterpret_cast<const char*>(recastMesh.getVertices().data()),
|
||||
reinterpret_cast<const char*>(recastMesh.getVertices().data() + recastMesh.getVertices().size()),
|
||||
std::back_inserter(result)
|
||||
);
|
||||
std::copy(
|
||||
reinterpret_cast<const char*>(recastMesh.getAreaTypes().data()),
|
||||
reinterpret_cast<const char*>(recastMesh.getAreaTypes().data() + recastMesh.getAreaTypes().size()),
|
||||
std::back_inserter(result)
|
||||
);
|
||||
std::copy(
|
||||
reinterpret_cast<const char*>(recastMesh.getWater().data()),
|
||||
reinterpret_cast<const char*>(recastMesh.getWater().data() + recastMesh.getWater().size()),
|
||||
std::back_inserter(result)
|
||||
);
|
||||
std::copy(
|
||||
reinterpret_cast<const char*>(offMeshConnections.data()),
|
||||
reinterpret_cast<const char*>(offMeshConnections.data() + offMeshConnections.size()),
|
||||
std::back_inserter(result)
|
||||
);
|
||||
return result;
|
||||
}
|
||||
}
|
||||
|
||||
NavMeshTilesCache::NavMeshTilesCache(const std::size_t maxNavMeshDataSize)
|
||||
: mMaxNavMeshDataSize(maxNavMeshDataSize), mUsedNavMeshDataSize(0), mFreeNavMeshDataSize(0) {}
|
||||
|
||||
NavMeshTilesCache::Value NavMeshTilesCache::get(const osg::Vec3f& agentHalfExtents, const TilePosition& changedTile,
|
||||
const RecastMesh& recastMesh, const std::vector<OffMeshConnection>& offMeshConnections)
|
||||
{
|
||||
const std::lock_guard<std::mutex> lock(mMutex);
|
||||
|
||||
const auto agentValues = mValues.find(agentHalfExtents);
|
||||
if (agentValues == mValues.end())
|
||||
return Value();
|
||||
|
||||
const auto tileValues = agentValues->second.find(changedTile);
|
||||
if (tileValues == agentValues->second.end())
|
||||
return Value();
|
||||
|
||||
const auto tile = tileValues->second.find(makeNavMeshKey(recastMesh, offMeshConnections));
|
||||
if (tile == tileValues->second.end())
|
||||
return Value();
|
||||
|
||||
acquireItemUnsafe(tile->second);
|
||||
|
||||
return Value(*this, tile->second);
|
||||
}
|
||||
|
||||
NavMeshTilesCache::Value NavMeshTilesCache::set(const osg::Vec3f& agentHalfExtents, const TilePosition& changedTile,
|
||||
const RecastMesh& recastMesh, const std::vector<OffMeshConnection>& offMeshConnections,
|
||||
NavMeshData value)
|
||||
{
|
||||
const auto navMeshSize = static_cast<std::size_t>(value.mSize);
|
||||
|
||||
const std::lock_guard<std::mutex> lock(mMutex);
|
||||
|
||||
if (navMeshSize > mMaxNavMeshDataSize)
|
||||
return Value();
|
||||
|
||||
if (navMeshSize > mFreeNavMeshDataSize + (mMaxNavMeshDataSize - mUsedNavMeshDataSize))
|
||||
return Value();
|
||||
|
||||
while (!mFreeItems.empty() && mUsedNavMeshDataSize + navMeshSize > mMaxNavMeshDataSize)
|
||||
removeLeastRecentlyUsed();
|
||||
|
||||
const auto navMeshKey = makeNavMeshKey(recastMesh, offMeshConnections);
|
||||
const auto iterator = mFreeItems.emplace(mFreeItems.end(), agentHalfExtents, changedTile, navMeshKey);
|
||||
const auto emplaced = mValues[agentHalfExtents][changedTile].emplace(navMeshKey, iterator);
|
||||
|
||||
if (!emplaced.second)
|
||||
{
|
||||
mFreeItems.erase(iterator);
|
||||
throw InvalidArgument("Set existing cache value");
|
||||
}
|
||||
|
||||
iterator->mNavMeshData = std::move(value);
|
||||
mUsedNavMeshDataSize += navMeshSize;
|
||||
mFreeNavMeshDataSize += navMeshSize;
|
||||
|
||||
acquireItemUnsafe(iterator);
|
||||
|
||||
return Value(*this, iterator);
|
||||
}
|
||||
|
||||
void NavMeshTilesCache::removeLeastRecentlyUsed()
|
||||
{
|
||||
const auto& item = mFreeItems.back();
|
||||
|
||||
const auto agentValues = mValues.find(item.mAgentHalfExtents);
|
||||
if (agentValues == mValues.end())
|
||||
return;
|
||||
|
||||
const auto tileValues = agentValues->second.find(item.mChangedTile);
|
||||
if (tileValues == agentValues->second.end())
|
||||
return;
|
||||
|
||||
const auto value = tileValues->second.find(item.mNavMeshKey);
|
||||
if (value == tileValues->second.end())
|
||||
return;
|
||||
|
||||
mUsedNavMeshDataSize -= static_cast<std::size_t>(item.mNavMeshData.mSize);
|
||||
mFreeItems.pop_back();
|
||||
|
||||
tileValues->second.erase(value);
|
||||
if (!tileValues->second.empty())
|
||||
return;
|
||||
|
||||
agentValues->second.erase(tileValues);
|
||||
if (!agentValues->second.empty())
|
||||
return;
|
||||
|
||||
mValues.erase(agentValues);
|
||||
}
|
||||
|
||||
void NavMeshTilesCache::acquireItemUnsafe(ItemIterator iterator)
|
||||
{
|
||||
if (++iterator->mUseCount > 1)
|
||||
return;
|
||||
|
||||
mBusyItems.splice(mBusyItems.end(), mFreeItems, iterator);
|
||||
mFreeNavMeshDataSize -= static_cast<std::size_t>(iterator->mNavMeshData.mSize);
|
||||
}
|
||||
|
||||
void NavMeshTilesCache::releaseItem(ItemIterator iterator)
|
||||
{
|
||||
if (--iterator->mUseCount > 0)
|
||||
return;
|
||||
|
||||
const std::lock_guard<std::mutex> lock(mMutex);
|
||||
|
||||
mFreeItems.splice(mFreeItems.begin(), mBusyItems, iterator);
|
||||
mFreeNavMeshDataSize += static_cast<std::size_t>(iterator->mNavMeshData.mSize);
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,127 @@
|
||||
#ifndef OPENMW_COMPONENTS_DETOURNAVIGATOR_NAVMESHTILESCACHE_H
|
||||
#define OPENMW_COMPONENTS_DETOURNAVIGATOR_NAVMESHTILESCACHE_H
|
||||
|
||||
#include "offmeshconnection.hpp"
|
||||
#include "navmeshdata.hpp"
|
||||
#include "recastmesh.hpp"
|
||||
#include "tileposition.hpp"
|
||||
|
||||
#include <atomic>
|
||||
#include <map>
|
||||
#include <list>
|
||||
#include <mutex>
|
||||
|
||||
namespace DetourNavigator
|
||||
{
|
||||
struct NavMeshDataRef
|
||||
{
|
||||
unsigned char* mValue;
|
||||
int mSize;
|
||||
};
|
||||
|
||||
class NavMeshTilesCache
|
||||
{
|
||||
public:
|
||||
struct Item
|
||||
{
|
||||
std::atomic<std::int64_t> mUseCount;
|
||||
osg::Vec3f mAgentHalfExtents;
|
||||
TilePosition mChangedTile;
|
||||
std::string mNavMeshKey;
|
||||
NavMeshData mNavMeshData;
|
||||
|
||||
Item(const osg::Vec3f& agentHalfExtents, const TilePosition& changedTile, std::string navMeshKey)
|
||||
: mUseCount(0)
|
||||
, mAgentHalfExtents(agentHalfExtents)
|
||||
, mChangedTile(changedTile)
|
||||
, mNavMeshKey(std::move(navMeshKey))
|
||||
{}
|
||||
};
|
||||
|
||||
using ItemIterator = std::list<Item>::iterator;
|
||||
|
||||
class Value
|
||||
{
|
||||
public:
|
||||
Value()
|
||||
: mOwner(nullptr), mIterator() {}
|
||||
|
||||
Value(NavMeshTilesCache& owner, ItemIterator iterator)
|
||||
: mOwner(&owner), mIterator(iterator)
|
||||
{
|
||||
}
|
||||
|
||||
Value(const Value& other) = delete;
|
||||
|
||||
Value(Value&& other)
|
||||
: mOwner(other.mOwner), mIterator(other.mIterator)
|
||||
{
|
||||
other.mIterator = ItemIterator();
|
||||
}
|
||||
|
||||
~Value()
|
||||
{
|
||||
if (mIterator != ItemIterator())
|
||||
mOwner->releaseItem(mIterator);
|
||||
}
|
||||
|
||||
Value& operator =(const Value& other) = delete;
|
||||
|
||||
Value& operator =(Value&& other)
|
||||
{
|
||||
if (mIterator == other.mIterator)
|
||||
return *this;
|
||||
|
||||
if (mIterator != ItemIterator())
|
||||
mOwner->releaseItem(mIterator);
|
||||
|
||||
mOwner = other.mOwner;
|
||||
mIterator = other.mIterator;
|
||||
|
||||
other.mIterator = ItemIterator();
|
||||
|
||||
return *this;
|
||||
}
|
||||
|
||||
NavMeshDataRef get() const
|
||||
{
|
||||
return NavMeshDataRef {mIterator->mNavMeshData.mValue.get(), mIterator->mNavMeshData.mSize};
|
||||
}
|
||||
|
||||
operator bool() const
|
||||
{
|
||||
return mIterator != ItemIterator();
|
||||
}
|
||||
|
||||
private:
|
||||
NavMeshTilesCache* mOwner;
|
||||
ItemIterator mIterator;
|
||||
};
|
||||
|
||||
NavMeshTilesCache(const std::size_t maxNavMeshDataSize);
|
||||
|
||||
Value get(const osg::Vec3f& agentHalfExtents, const TilePosition& changedTile,
|
||||
const RecastMesh& recastMesh, const std::vector<OffMeshConnection>& offMeshConnections);
|
||||
|
||||
Value set(const osg::Vec3f& agentHalfExtents, const TilePosition& changedTile,
|
||||
const RecastMesh& recastMesh, const std::vector<OffMeshConnection>& offMeshConnections,
|
||||
NavMeshData value);
|
||||
|
||||
private:
|
||||
std::mutex mMutex;
|
||||
std::size_t mMaxNavMeshDataSize;
|
||||
std::size_t mUsedNavMeshDataSize;
|
||||
std::size_t mFreeNavMeshDataSize;
|
||||
std::list<Item> mBusyItems;
|
||||
std::list<Item> mFreeItems;
|
||||
std::map<osg::Vec3f, std::map<TilePosition, std::map<std::string, ItemIterator>>> mValues;
|
||||
|
||||
void removeLeastRecentlyUsed();
|
||||
|
||||
void acquireItemUnsafe(ItemIterator iterator);
|
||||
|
||||
void releaseItem(ItemIterator iterator);
|
||||
};
|
||||
}
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,15 @@
|
||||
#ifndef OPENMW_COMPONENTS_DETOURNAVIGATOR_OFFMESHCONNECTION_H
|
||||
#define OPENMW_COMPONENTS_DETOURNAVIGATOR_OFFMESHCONNECTION_H
|
||||
|
||||
#include <osg/Vec3f>
|
||||
|
||||
namespace DetourNavigator
|
||||
{
|
||||
struct OffMeshConnection
|
||||
{
|
||||
osg::Vec3f mStart;
|
||||
osg::Vec3f mEnd;
|
||||
};
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue