mirror of https://github.com/axmolengine/axmol.git
193 lines
7.2 KiB
C++
193 lines
7.2 KiB
C++
/****************************************************************************
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Copyright (C) 2013 Henry van Merode. All rights reserved.
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Copyright (c) 2015 Chukong Technologies Inc.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __CC_PU_PARTICLE_3D_RIBBON_TRAIL_H__
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#define __CC_PU_PARTICLE_3D_RIBBON_TRAIL_H__
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#include "base/CCRef.h"
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#include "math/CCMath.h"
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#include "extensions/Particle3D/ParticleUniverse/ParticleRenders/CCPUParticle3DBillboardChain.h"
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#include <vector>
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NS_CC_BEGIN
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class PURibbonTrail : public PUBillboardChain
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{
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public:
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/** Constructor
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@param name The name to give this object
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@param maxElements The maximum number of elements per chain
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@param numberOfChains The number of separate chain segments contained in this object,
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ie the maximum number of nodes that can have trails attached
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@param useTextureCoords If true, use texture coordinates from the chain elements
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@param useVertexColors If true, use vertex colors from the chain elements (must
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be true if you intend to use fading)
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*/
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PURibbonTrail(const std::string& name, const std::string &texFile = "", size_t maxElements = 20, size_t numberOfChains = 1,
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bool useTextureCoords = true, bool useColours = true);
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/// destructor
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virtual ~PURibbonTrail();
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typedef std::vector<Node*> NodeList;
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/** Add a node to be tracked.
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@param n The node that will be tracked.
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*/
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virtual void addNode(Node* n);
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/** Remove tracking on a given node. */
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virtual void removeNode(Node* n);
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/** Get the chain index for a given Node being tracked. */
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virtual size_t getChainIndexForNode(const Node* n);
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void setAttachedNode(Node *parent) { _parentNode = parent; }
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/** Set the length of the trail.
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@remarks
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This sets the length of the trail, in world units. It also sets how
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far apart each segment will be, ie length / max_elements.
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@param len The length of the trail in world units
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*/
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virtual void setTrailLength(float len);
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/** Get the length of the trail. */
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virtual float getTrailLength(void) const { return _trailLength; }
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/** @copydoc BillboardChain::setMaxChainElements */
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void setMaxChainElements(size_t maxElements);
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/** @copydoc BillboardChain::setNumberOfChains */
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void setNumberOfChains(size_t numChains);
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/** @copydoc BillboardChain::clearChain */
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void clearChain(size_t chainIndex);
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/** Set the starting ribbon colour for a given segment.
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@param chainIndex The index of the chain
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@param col The initial colour
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@note
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Only used if this instance is using vertex colours.
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*/
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virtual void setInitialColour(size_t chainIndex, const Vec4& col);
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/** Set the starting ribbon colour.
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@param chainIndex The index of the chain
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@param r,b,g,a The initial colour
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@note
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Only used if this instance is using vertex colours.
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*/
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virtual void setInitialColour(size_t chainIndex, float r, float g, float b, float a = 1.0);
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/** Get the starting ribbon colour. */
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virtual const Vec4& getInitialColour(size_t chainIndex) const;
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/** Enables / disables fading the trail using colour.
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@param chainIndex The index of the chain
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@param valuePerSecond The amount to subtract from colour each second
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*/
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virtual void setColourChange(size_t chainIndex, const Vec4& valuePerSecond);
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/** Set the starting ribbon width in world units.
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@param chainIndex The index of the chain
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@param width The initial width of the ribbon
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*/
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virtual void setInitialWidth(size_t chainIndex, float width);
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/** Get the starting ribbon width in world units. */
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virtual float getInitialWidth(size_t chainIndex) const;
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/** Set the change in ribbon width per second.
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@param chainIndex The index of the chain
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@param widthDeltaPerSecond The amount the width will reduce by per second
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*/
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virtual void setWidthChange(size_t chainIndex, float widthDeltaPerSecond);
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/** Get the change in ribbon width per second. */
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virtual float getWidthChange(size_t chainIndex) const;
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/** Enables / disables fading the trail using colour.
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@param chainIndex The index of the chain
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@param r,g,b,a The amount to subtract from each colour channel per second
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*/
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virtual void setColourChange(size_t chainIndex, float r, float g, float b, float a);
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/** Get the per-second fading amount */
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virtual const Vec4& getColourChange(size_t chainIndex) const;
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void update(float deltaTime);
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/// @see Node::Listener::nodeUpdated
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void nodeUpdated(const Node* node);
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/// @see Node::Listener::nodeDestroyed
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void nodeDestroyed(const Node* node);
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/// Perform any fading / width delta required; internal method
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void timeUpdate(float time);
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protected:
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/// Manage updates to the time controller
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void manageController(void);
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/// Node has changed position, update
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void updateTrail(size_t index, const Node* node);
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/// Reset the tracked chain to initial state
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void resetTrail(size_t index, const Node* node);
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/// Reset all tracked chains to initial state
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void resetAllTrails(void);
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protected:
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/// List of nodes being trailed
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NodeList _nodeList;
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/// Mapping of nodes to chain segments
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typedef std::vector<size_t> IndexVector;
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/// Ordered like mNodeList, contains chain index
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IndexVector _nodeToChainSegment;
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// chains not in use
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IndexVector _freeChains;
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// fast lookup node->chain index
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// we use positional map too because that can be useful
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typedef std::map<const Node*, size_t> NodeToChainSegmentMap;
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NodeToChainSegmentMap _nodeToSegMap;
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/// Total length of trail in world units
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float _trailLength;
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/// length of each element
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float _elemLength;
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/// Squared length of each element
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float _squaredElemLength;
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typedef std::vector<Vec4> ColorValueList;
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typedef std::vector<float> RealList;
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/// Initial colour of the ribbon
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ColorValueList _initialColor;
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/// fade amount per second
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ColorValueList _deltaColor;
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/// Initial width of the ribbon
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RealList _initialWidth;
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/// Delta width of the ribbon
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RealList _deltaWidth;
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Node *_parentNode;
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bool _needTimeUpdate;
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};
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NS_CC_END
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#endif
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