From 3efd422e8619ed4273bb2258ad298f1e524c64ea Mon Sep 17 00:00:00 2001
From: SirLynix <lynix680@gmail.com>
Date: Thu, 23 Mar 2023 13:10:00 +0100
Subject: [PATCH] BulletPhysics3D: Add StaticPlaneCollider3D

---
 .../BulletPhysics3D/BulletCollider3D.hpp      | 22 ++++++++++
 include/Nazara/BulletPhysics3D/Enums.hpp      |  4 +-
 .../BulletPhysics3D/BulletCollider3D.cpp      | 41 +++++++++++++++++++
 3 files changed, 65 insertions(+), 2 deletions(-)

diff --git a/include/Nazara/BulletPhysics3D/BulletCollider3D.hpp b/include/Nazara/BulletPhysics3D/BulletCollider3D.hpp
index 2fe58cae5..070ff7456 100644
--- a/include/Nazara/BulletPhysics3D/BulletCollider3D.hpp
+++ b/include/Nazara/BulletPhysics3D/BulletCollider3D.hpp
@@ -13,6 +13,7 @@
 #include <Nazara/Core/ObjectLibrary.hpp>
 #include <Nazara/Math/Box.hpp>
 #include <Nazara/Math/Quaternion.hpp>
+#include <Nazara/Math/Plane.hpp>
 #include <Nazara/Math/Vector3.hpp>
 #include <NazaraUtils/Signal.hpp>
 #include <NazaraUtils/SparsePtr.hpp>
@@ -27,6 +28,7 @@ class btConvexHullShape;
 class btCylinderShape;
 class btEmptyShape;
 class btSphereShape;
+class btStaticPlaneShape;
 
 namespace Nz
 {
@@ -211,6 +213,26 @@ namespace Nz
 			Vector3f m_position;
 			float m_radius;
 	};
+
+	class NAZARA_BULLETPHYSICS3D_API BulletStaticPlaneCollider3D final : public BulletCollider3D
+	{
+		public:
+			BulletStaticPlaneCollider3D(const Planef& plane);
+			BulletStaticPlaneCollider3D(const Vector3f& normal, float distance);
+			~BulletStaticPlaneCollider3D();
+
+			void BuildDebugMesh(std::vector<Vector3f>& vertices, std::vector<UInt16>& indices, const Matrix4f& offsetMatrix) const override;
+
+			float GetDistance() const;
+			const Vector3f& GetNormal() const;
+			btCollisionShape* GetShape() const override;
+			ColliderType3D GetType() const override;
+
+		private:
+			std::unique_ptr<btStaticPlaneShape> m_shape;
+			Vector3f m_normal;
+			float m_distance;
+	};
 }
 
 #include <Nazara/BulletPhysics3D/BulletCollider3D.inl>
diff --git a/include/Nazara/BulletPhysics3D/Enums.hpp b/include/Nazara/BulletPhysics3D/Enums.hpp
index 6d650bf1f..f864f61a9 100644
--- a/include/Nazara/BulletPhysics3D/Enums.hpp
+++ b/include/Nazara/BulletPhysics3D/Enums.hpp
@@ -21,9 +21,9 @@ namespace Nz
 		Null,
 		Scene,
 		Sphere,
-		Tree,
+		StaticPlane,
 
-		Max = Tree
+		Max = StaticPlane
 	};
 }
 
diff --git a/src/Nazara/BulletPhysics3D/BulletCollider3D.cpp b/src/Nazara/BulletPhysics3D/BulletCollider3D.cpp
index e5215076e..3187783f1 100644
--- a/src/Nazara/BulletPhysics3D/BulletCollider3D.cpp
+++ b/src/Nazara/BulletPhysics3D/BulletCollider3D.cpp
@@ -20,6 +20,7 @@
 #include <BulletCollision/CollisionShapes/btCylinderShape.h>
 #include <BulletCollision/CollisionShapes/btEmptyShape.h>
 #include <BulletCollision/CollisionShapes/btSphereShape.h>
+#include <BulletCollision/CollisionShapes/btStaticPlaneShape.h>
 #include <Nazara/BulletPhysics3D/Debug.hpp>
 
 namespace Nz
@@ -426,4 +427,44 @@ namespace Nz
 	{
 		return ColliderType3D::Sphere;
 	}
+
+	/******************************** StaticPlaneCollider3D *********************************/
+
+	StaticPlaneCollider3D::StaticPlaneCollider3D(const Planef& plane) :
+	StaticPlaneCollider3D(plane.normal, plane.distance)
+	{
+	}
+
+	StaticPlaneCollider3D::StaticPlaneCollider3D(const Vector3f& normal, float distance) :
+	m_normal(normal),
+	m_distance(distance)
+	{
+		m_shape = std::make_unique<btStaticPlaneShape>(ToBullet(m_normal), m_distance);
+	}
+
+	StaticPlaneCollider3D::~StaticPlaneCollider3D() = default;
+
+	void StaticPlaneCollider3D::BuildDebugMesh(std::vector<Vector3f>& vertices, std::vector<UInt16>& indices, const Matrix4f& offsetMatrix) const
+	{
+	}
+
+	float StaticPlaneCollider3D::GetDistance() const
+	{
+		return m_distance;
+	}
+
+	const Vector3f& StaticPlaneCollider3D::GetNormal() const
+	{
+		return m_normal;
+	}
+
+	btCollisionShape* StaticPlaneCollider3D::GetShape() const
+	{
+		return m_shape.get();
+	}
+
+	ColliderType3D StaticPlaneCollider3D::GetType() const
+	{
+		return ColliderType3D::StaticPlane;
+	}
 }