mirror of https://github.com/axmolengine/axmol.git
442 lines
13 KiB
C++
442 lines
13 KiB
C++
/****************************************************************************
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Copyright (c) 2011 ForzeField Studios S.L.
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Copyright (c) 2010-2012 cocos2d-x.org
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Copyright (c) 2013-2016 Chukong Technologies Inc.
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Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
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https://axis-project.github.io/
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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 false 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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#include "2d/CCMotionStreak.h"
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#include "math/CCVertex.h"
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#include "base/CCDirector.h"
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#include "base/ccUtils.h"
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#include "renderer/CCTextureCache.h"
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#include "renderer/CCTexture2D.h"
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#include "renderer/CCRenderer.h"
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#include "renderer/ccShaders.h"
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#include "renderer/backend/ProgramState.h"
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NS_AX_BEGIN
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MotionStreak::MotionStreak()
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{
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_customCommand.setDrawType(CustomCommand::DrawType::ARRAY);
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_customCommand.setPrimitiveType(CustomCommand::PrimitiveType::TRIANGLE_STRIP);
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}
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MotionStreak::~MotionStreak()
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{
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CC_SAFE_RELEASE(_texture);
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CC_SAFE_FREE(_pointState);
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CC_SAFE_FREE(_pointVertexes);
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CC_SAFE_FREE(_vertices);
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CC_SAFE_FREE(_colorPointer);
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CC_SAFE_FREE(_texCoords);
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}
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MotionStreak* MotionStreak::create(float fade, float minSeg, float stroke, const Color3B& color, std::string_view path)
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{
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MotionStreak* ret = new MotionStreak();
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if (ret->initWithFade(fade, minSeg, stroke, color, path))
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{
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ret->autorelease();
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return ret;
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}
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CC_SAFE_DELETE(ret);
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return nullptr;
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}
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MotionStreak* MotionStreak::create(float fade, float minSeg, float stroke, const Color3B& color, Texture2D* texture)
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{
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MotionStreak* ret = new MotionStreak();
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if (ret->initWithFade(fade, minSeg, stroke, color, texture))
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{
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ret->autorelease();
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return ret;
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}
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CC_SAFE_DELETE(ret);
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return nullptr;
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}
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bool MotionStreak::initWithFade(float fade, float minSeg, float stroke, const Color3B& color, std::string_view path)
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{
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CCASSERT(!path.empty(), "Invalid filename");
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Texture2D* texture = _director->getTextureCache()->addImage(path);
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return initWithFade(fade, minSeg, stroke, color, texture);
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}
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bool MotionStreak::initWithFade(float fade, float minSeg, float stroke, const Color3B& color, Texture2D* texture)
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{
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Node::setPosition(Vec2::ZERO);
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setAnchorPoint(Vec2::ZERO);
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setIgnoreAnchorPointForPosition(true);
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_startingPositionInitialized = false;
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_positionR.setZero();
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_fastMode = true;
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_minSeg = (minSeg == -1.0f) ? stroke / 5.0f : minSeg;
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_minSeg *= _minSeg;
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_stroke = stroke;
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_fadeDelta = 1.0f / fade;
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// Fix #629 Motion streak vsync off crash
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double interval = _director->getAnimationInterval();
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double fps = 1 / interval;
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if (roundf(fps) > 240.0)
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fps = 240.0;
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_maxPoints = (int)(fade * fps) + 2;
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_pointState = (float*)malloc(sizeof(float) * _maxPoints);
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_pointVertexes = (Vec2*)malloc(sizeof(Vec2) * _maxPoints);
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const size_t VERTEX_SIZE = sizeof(Vec2) + sizeof(Tex2F) + sizeof(uint8_t) * 4;
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_vertexCount = _maxPoints * 2;
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_vertices = (Vec2*)malloc(sizeof(Vec2) * _vertexCount);
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_texCoords = (Tex2F*)malloc(sizeof(Tex2F) * _vertexCount);
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_colorPointer = (uint8_t*)malloc(sizeof(uint8_t) * 4 * _vertexCount);
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_customCommand.createVertexBuffer(VERTEX_SIZE, _vertexCount, CustomCommand::BufferUsage::DYNAMIC);
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std::vector<uint8_t> zeros;
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zeros.resize(VERTEX_SIZE * _vertexCount);
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std::fill(zeros.begin(), zeros.end(), 0);
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_customCommand.updateVertexBuffer(zeros.data(), zeros.size());
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setTexture(texture);
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setColor(color);
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scheduleUpdate();
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return true;
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}
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void MotionStreak::setPosition(const Vec2& position)
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{
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if (!_startingPositionInitialized)
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{
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_startingPositionInitialized = true;
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}
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_positionR = position;
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}
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void MotionStreak::setPosition(float x, float y)
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{
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if (!_startingPositionInitialized)
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{
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_startingPositionInitialized = true;
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}
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_positionR.x = x;
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_positionR.y = y;
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}
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const Vec2& MotionStreak::getPosition() const
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{
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return _positionR;
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}
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void MotionStreak::getPosition(float* x, float* y) const
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{
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*x = _positionR.x;
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*y = _positionR.y;
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}
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float MotionStreak::getPositionX() const
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{
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return _positionR.x;
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}
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Vec3 MotionStreak::getPosition3D() const
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{
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return Vec3(_positionR.x, _positionR.y, getPositionZ());
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}
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void MotionStreak::setPositionX(float x)
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{
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if (!_startingPositionInitialized)
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{
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_startingPositionInitialized = true;
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}
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_positionR.x = x;
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}
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float MotionStreak::getPositionY() const
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{
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return _positionR.y;
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}
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void MotionStreak::setPositionY(float y)
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{
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if (!_startingPositionInitialized)
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{
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_startingPositionInitialized = true;
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}
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_positionR.y = y;
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}
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void MotionStreak::tintWithColor(const Color3B& colors)
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{
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setColor(colors);
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// Fast assignation
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for (unsigned int i = 0; i < _nuPoints * 2; i++)
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{
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*((Color3B*)(_colorPointer + i * 4)) = colors;
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}
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}
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Texture2D* MotionStreak::getTexture() const
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{
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return _texture;
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}
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void MotionStreak::setTexture(Texture2D* texture)
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{
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if (_texture != texture)
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{
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CC_SAFE_RETAIN(texture);
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CC_SAFE_RELEASE(_texture);
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_texture = texture;
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setProgramStateWithRegistry(backend::ProgramType::POSITION_TEXTURE_COLOR, _texture);
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}
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}
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bool MotionStreak::setProgramState(backend::ProgramState* programState, bool needsRetain)
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{
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if (Node::setProgramState(programState, needsRetain))
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{
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CCASSERT(programState, "argument should not be nullptr");
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auto& pipelineDescriptor = _customCommand.getPipelineDescriptor();
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pipelineDescriptor.programState = _programState;
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_mvpMatrixLocaiton = _programState->getUniformLocation("u_MVPMatrix");
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_textureLocation = _programState->getUniformLocation("u_tex0");
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auto vertexLayout = _programState->getVertexLayout();
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const auto& attributeInfo = _programState->getProgram()->getActiveAttributes();
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auto iter = attributeInfo.find("a_position");
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if (iter != attributeInfo.end())
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{
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vertexLayout->setAttribute("a_position", iter->second.location, backend::VertexFormat::FLOAT2, 0, false);
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}
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iter = attributeInfo.find("a_texCoord");
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if (iter != attributeInfo.end())
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{
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vertexLayout->setAttribute("a_texCoord", iter->second.location, backend::VertexFormat::FLOAT2,
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2 * sizeof(float), false);
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}
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iter = attributeInfo.find("a_color");
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if (iter != attributeInfo.end())
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{
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vertexLayout->setAttribute("a_color", iter->second.location, backend::VertexFormat::UBYTE4,
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4 * sizeof(float), true);
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}
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vertexLayout->setLayout(4 * sizeof(float) + 4 * sizeof(uint8_t));
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updateProgramStateTexture(_texture);
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return true;
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}
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return false;
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}
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void MotionStreak::setBlendFunc(const BlendFunc& blendFunc)
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{
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_blendFunc = blendFunc;
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}
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const BlendFunc& MotionStreak::getBlendFunc() const
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{
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return _blendFunc;
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}
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void MotionStreak::setOpacity(uint8_t /*opacity*/)
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{
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CCASSERT(false, "Set opacity no supported");
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}
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uint8_t MotionStreak::getOpacity() const
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{
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CCASSERT(false, "Opacity no supported");
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return 0;
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}
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void MotionStreak::setOpacityModifyRGB(bool /*bValue*/) {}
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bool MotionStreak::isOpacityModifyRGB() const
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{
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return false;
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}
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void MotionStreak::update(float delta)
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{
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if (!_startingPositionInitialized)
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return;
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delta *= _fadeDelta;
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unsigned int newIdx, newIdx2, i, i2;
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unsigned int mov = 0;
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// Update current points
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for (i = 0; i < _nuPoints; i++)
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{
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_pointState[i] -= delta;
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if (_pointState[i] <= 0)
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mov++;
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else
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{
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newIdx = i - mov;
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if (mov > 0)
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{
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// Move data
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_pointState[newIdx] = _pointState[i];
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// Move point
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_pointVertexes[newIdx] = _pointVertexes[i];
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// Move vertices
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i2 = i * 2;
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newIdx2 = newIdx * 2;
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_vertices[newIdx2] = _vertices[i2];
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_vertices[newIdx2 + 1] = _vertices[i2 + 1];
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// Move color
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i2 *= 4;
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newIdx2 *= 4;
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_colorPointer[newIdx2 + 0] = _colorPointer[i2 + 0];
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_colorPointer[newIdx2 + 1] = _colorPointer[i2 + 1];
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_colorPointer[newIdx2 + 2] = _colorPointer[i2 + 2];
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_colorPointer[newIdx2 + 4] = _colorPointer[i2 + 4];
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_colorPointer[newIdx2 + 5] = _colorPointer[i2 + 5];
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_colorPointer[newIdx2 + 6] = _colorPointer[i2 + 6];
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}
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else
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newIdx2 = newIdx * 8;
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const uint8_t op = (uint8_t)(_pointState[newIdx] * 255.0f);
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_colorPointer[newIdx2 + 3] = op;
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_colorPointer[newIdx2 + 7] = op;
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}
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}
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_nuPoints -= mov;
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// Append new point
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bool appendNewPoint = true;
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if (_nuPoints >= _maxPoints)
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appendNewPoint = false;
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else if (_nuPoints > 0)
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{
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bool a1 = _pointVertexes[_nuPoints - 1].getDistanceSq(_positionR) < _minSeg;
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bool a2 =
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(_nuPoints == 1) ? false : (_pointVertexes[_nuPoints - 2].getDistanceSq(_positionR) < (_minSeg * 2.0f));
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if (a1 || a2)
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appendNewPoint = false;
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}
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if (appendNewPoint)
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{
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_pointVertexes[_nuPoints] = _positionR;
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_pointState[_nuPoints] = 1.0f;
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// Color assignment
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const unsigned int offset = _nuPoints * 8;
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*((Color3B*)(_colorPointer + offset)) = _displayedColor;
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*((Color3B*)(_colorPointer + offset + 4)) = _displayedColor;
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// Opacity
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_colorPointer[offset + 3] = 255;
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_colorPointer[offset + 7] = 255;
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// Generate polygon
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if (_nuPoints > 0 && _fastMode)
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{
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if (_nuPoints > 1)
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{
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ccVertexLineToPolygon(_pointVertexes, _stroke, _vertices, _nuPoints, 1);
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}
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else
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{
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ccVertexLineToPolygon(_pointVertexes, _stroke, _vertices, 0, 2);
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}
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}
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_nuPoints++;
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}
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if (!_fastMode)
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ccVertexLineToPolygon(_pointVertexes, _stroke, _vertices, 0, _nuPoints);
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// Updated Tex Coords only if they are different than previous step
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if (_nuPoints && _previousNuPoints != _nuPoints)
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{
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float texDelta = 1.0f / _nuPoints;
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for (i = 0; i < _nuPoints; i++)
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{
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_texCoords[i * 2] = Tex2F(0, texDelta * i);
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_texCoords[i * 2 + 1] = Tex2F(1, texDelta * i);
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}
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_previousNuPoints = _nuPoints;
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}
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}
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void MotionStreak::reset()
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{
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_nuPoints = 0;
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}
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void MotionStreak::draw(Renderer* renderer, const Mat4& transform, uint32_t flags)
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{
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if (_nuPoints <= 1)
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return;
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auto drawCount = _nuPoints * 2;
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_customCommand.init(_globalZOrder, _blendFunc);
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_customCommand.setVertexDrawInfo(0, drawCount);
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renderer->addCommand(&_customCommand);
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auto programState = _customCommand.getPipelineDescriptor().programState;
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const auto& projectionMat = _director->getMatrix(MATRIX_STACK_TYPE::MATRIX_STACK_PROJECTION);
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Mat4 finalMat = projectionMat * transform;
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programState->setUniform(_mvpMatrixLocaiton, finalMat.m, sizeof(Mat4));
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unsigned int offset = 0;
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unsigned int vertexSize = sizeof(Vec2) + sizeof(Vec2) + sizeof(uint8_t) * 4;
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for (unsigned int i = 0; i < drawCount; ++i)
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{
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offset = i * vertexSize;
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_customCommand.updateVertexBuffer(&_vertices[i], offset, sizeof(_vertices[0]));
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_customCommand.updateVertexBuffer(&_texCoords[i], offset + sizeof(_vertices[0]), sizeof(_texCoords[0]));
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_customCommand.updateVertexBuffer(&_colorPointer[i * 4], offset + sizeof(_vertices[0]) + sizeof(_texCoords[0]),
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4 * sizeof(uint8_t));
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}
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}
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NS_AX_END
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