141 lines
3.7 KiB
C++
141 lines
3.7 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "IrrCompileConfig.h"
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#ifdef _IRR_COMPILE_WITH_WATER_SURFACE_SCENENODE_
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#include "CWaterSurfaceSceneNode.h"
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#include "ISceneManager.h"
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#include "IMeshManipulator.h"
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#include "IMeshCache.h"
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#include "S3DVertex.h"
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#include "SMesh.h"
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#include "os.h"
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namespace irr
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{
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namespace scene
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{
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//! constructor
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CWaterSurfaceSceneNode::CWaterSurfaceSceneNode(f32 waveHeight, f32 waveSpeed, f32 waveLength,
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IMesh* mesh, ISceneNode* parent, ISceneManager* mgr, s32 id,
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const core::vector3df& position, const core::vector3df& rotation,
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const core::vector3df& scale)
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: CMeshSceneNode(mesh, parent, mgr, id, position, rotation, scale),
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WaveLength(waveLength), WaveSpeed(waveSpeed), WaveHeight(waveHeight),
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OriginalMesh(0)
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{
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#ifdef _DEBUG
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setDebugName("CWaterSurfaceSceneNode");
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#endif
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setMesh(mesh);
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}
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//! destructor
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CWaterSurfaceSceneNode::~CWaterSurfaceSceneNode()
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{
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// Mesh is dropped in CMeshSceneNode destructor
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if (OriginalMesh)
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OriginalMesh->drop();
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}
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//! frame
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void CWaterSurfaceSceneNode::OnRegisterSceneNode()
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{
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CMeshSceneNode::OnRegisterSceneNode();
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}
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void CWaterSurfaceSceneNode::OnAnimate(u32 timeMs)
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{
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if (Mesh && IsVisible)
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{
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const u32 meshBufferCount = Mesh->getMeshBufferCount();
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const f32 time = timeMs / WaveSpeed;
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for (u32 b=0; b<meshBufferCount; ++b)
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{
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const u32 vtxCnt = Mesh->getMeshBuffer(b)->getVertexCount();
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for (u32 i=0; i<vtxCnt; ++i)
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Mesh->getMeshBuffer(b)->getPosition(i).Y = addWave(
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OriginalMesh->getMeshBuffer(b)->getPosition(i),
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time);
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}// end for all mesh buffers
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Mesh->setDirty(scene::EBT_VERTEX);
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SceneManager->getMeshManipulator()->recalculateNormals(Mesh);
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}
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CMeshSceneNode::OnAnimate(timeMs);
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}
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void CWaterSurfaceSceneNode::setMesh(IMesh* mesh)
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{
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CMeshSceneNode::setMesh(mesh);
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if (!mesh)
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return;
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if (OriginalMesh)
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OriginalMesh->drop();
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IMesh* clone = SceneManager->getMeshManipulator()->createMeshCopy(mesh);
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OriginalMesh = mesh;
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Mesh = clone;
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Mesh->setHardwareMappingHint(scene::EHM_STATIC, scene::EBT_INDEX);
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// Mesh->setHardwareMappingHint(scene::EHM_STREAM, scene::EBT_VERTEX);
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}
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//! Writes attributes of the scene node.
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void CWaterSurfaceSceneNode::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options) const
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{
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out->addFloat("WaveLength", WaveLength);
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out->addFloat("WaveSpeed", WaveSpeed);
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out->addFloat("WaveHeight", WaveHeight);
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CMeshSceneNode::serializeAttributes(out, options);
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// serialize original mesh
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out->setAttribute("Mesh", SceneManager->getMeshCache()->getMeshName(OriginalMesh).getPath().c_str());
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}
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//! Reads attributes of the scene node.
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void CWaterSurfaceSceneNode::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options)
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{
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WaveLength = in->getAttributeAsFloat("WaveLength");
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WaveSpeed = in->getAttributeAsFloat("WaveSpeed");
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WaveHeight = in->getAttributeAsFloat("WaveHeight");
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if (Mesh)
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{
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Mesh->drop();
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Mesh = OriginalMesh;
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OriginalMesh = 0;
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}
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// deserialize original mesh
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CMeshSceneNode::deserializeAttributes(in, options);
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if (Mesh)
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{
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IMesh* clone = SceneManager->getMeshManipulator()->createMeshCopy(Mesh);
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OriginalMesh = Mesh;
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Mesh = clone;
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}
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}
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f32 CWaterSurfaceSceneNode::addWave(const core::vector3df &source, f32 time) const
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{
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return source.Y +
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(sinf(((source.X/WaveLength) + time)) * WaveHeight) +
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(cosf(((source.Z/WaveLength) + time)) * WaveHeight);
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}
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} // end namespace scene
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} // end namespace irr
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#endif // _IRR_COMPILE_WITH_WATER_SURFACE_SCENENODE_
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