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Merge pull request #38 from SHADE-DP/SP3-12-SceneGraph

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XiaoQiDigipen 2022-09-21 20:01:44 +08:00 committed by GitHub
parent de983cdc66 ac379e3ef3
commit 67d673ff80
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 41 additions and 3 deletions
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14
SHADE_Engine/src/Scene/SHSceneGraph.cpp
View File

@ -507,6 +507,11 @@ namespace SHADE
ReleaseNode(node); ReleaseNode(node);
} }
void SHSceneGraph::Traverse (const UnaryPredicate& predicate) const
{
TraverseAndInvokePredicate(root, predicate);
}
/*-----------------------------------------------------------------------------------*/ /*-----------------------------------------------------------------------------------*/
/* Private Function Member Definitions */ /* Private Function Member Definitions */
/*-----------------------------------------------------------------------------------*/ /*-----------------------------------------------------------------------------------*/
@ -541,4 +546,13 @@ namespace SHADE
delete node; delete node;
} }
void SHSceneGraph::TraverseAndInvokePredicate(const SHSceneNode* node, const UnaryPredicate& predicate)
{
for (auto* child : node->children)
{
predicate(child);
TraverseAndInvokePredicate(child, predicate);
}
}
} // namespace SHADE } // namespace SHADE

24
SHADE_Engine/src/Scene/SHSceneGraph.h
View File

@ -18,12 +18,25 @@
namespace SHADE namespace SHADE
{ {
/*-----------------------------------------------------------------------------------*/
/* Forward Declarations */
/*-----------------------------------------------------------------------------------*/
class SHSceneGraph;
/*-----------------------------------------------------------------------------------*/ /*-----------------------------------------------------------------------------------*/
/* Type Definitions */ /* Type Definitions */
/*-----------------------------------------------------------------------------------*/ /*-----------------------------------------------------------------------------------*/
class SH_API SHSceneNode class SH_API SHSceneNode
{ {
private:
/*---------------------------------------------------------------------------------*/
/* Friends */
/*---------------------------------------------------------------------------------*/
friend class SHSceneGraph;
public: public:
/*---------------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------------*/
/* Data Members */ /* Data Members */
@ -71,6 +84,10 @@ namespace SHADE
void RemoveAllChildren () noexcept; void RemoveAllChildren () noexcept;
private: private:
/*---------------------------------------------------------------------------------*/
/* Data Members */
/*---------------------------------------------------------------------------------*/
EntityID entityID; EntityID entityID;
SHSceneNode* parent; SHSceneNode* parent;
std::vector<SHSceneNode*> children; std::vector<SHSceneNode*> children;
@ -85,6 +102,9 @@ namespace SHADE
using EntityNodeMap = std::unordered_map<EntityID, SHSceneNode*>; using EntityNodeMap = std::unordered_map<EntityID, SHSceneNode*>;
using UnaryPredicate = void (*)(SHSceneNode*);
/*---------------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------------*/
/* Constructors & Destructor */ /* Constructors & Destructor */
/*---------------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------------*/
@ -124,6 +144,9 @@ namespace SHADE
bool RemoveNode (SHSceneNode* nodeToRemove) noexcept; bool RemoveNode (SHSceneNode* nodeToRemove) noexcept;
void Reset () noexcept; void Reset () noexcept;
void Traverse (const UnaryPredicate& predicate) const;
private: private:
/*---------------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------------*/
/* Data Members */ /* Data Members */
@ -138,6 +161,7 @@ namespace SHADE
SHSceneNode* AllocateNode (EntityID entityID); SHSceneNode* AllocateNode (EntityID entityID);
void ReleaseNode (SHSceneNode* node) noexcept; void ReleaseNode (SHSceneNode* node) noexcept;
static void TraverseAndInvokePredicate (const SHSceneNode* node, const UnaryPredicate& predicate);
}; };