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axmol/samples/Cpp/TestCpp/Classes/PhysicsTest/PhysicsTest.cpp

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#include "PhysicsTest.h"
#include <cmath>
#include "../testResource.h"
USING_NS_CC;
namespace
{
static std::function<Layer*()> createFunctions[] = {
#ifdef CC_USE_PHYSICS
CL(PhysicsDemoLogoSmash),
CL(PhysicsDemoPyramidStack),
CL(PhysicsDemoClickAdd),
CL(PhysicsDemoRayCast),
CL(PhysicsDemoJoints),
CL(PhysicsDemoActions),
CL(PhysicsDemoPump),
CL(PhysicsDemoOneWayPlatform),
CL(PhysicsDemoSlice),
#else
CL(PhysicsDemoDisabled),
#endif
};
static int sceneIdx=-1;
#define MAX_LAYER (sizeof(createFunctions) / sizeof(createFunctions[0]))
static Layer* next()
{
sceneIdx++;
sceneIdx = sceneIdx % MAX_LAYER;
auto layer = (createFunctions[sceneIdx])();
return layer;
}
static Layer* back()
{
sceneIdx--;
int total = MAX_LAYER;
if( sceneIdx < 0 )
sceneIdx += total;
auto layer = (createFunctions[sceneIdx])();
return layer;
}
static Layer* restart()
{
auto layer = (createFunctions[sceneIdx])();
return layer;
}
static const Color4F STATIC_COLOR(1.0f, 0.0f, 0.0f, 1.0f);
static const int DRAG_BODYS_TAG = 0x80;
}
PhysicsTestScene::PhysicsTestScene()
#ifdef CC_USE_PHYSICS
: TestScene(false, true)
#else
: TestScene()
#endif
, _debugDraw(false)
{}
void PhysicsTestScene::runThisTest()
{
sceneIdx = -1;
addChild(next());
Director::getInstance()->replaceScene(this);
}
void PhysicsTestScene::toggleDebug()
{
#ifdef CC_USE_PHYSICS
_debugDraw = !_debugDraw;
getPhysicsWorld()->setDebugDrawMask(_debugDraw ? PhysicsWorld::DEBUGDRAW_ALL : PhysicsWorld::DEBUGDRAW_NONE);
#endif
}
#ifndef CC_USE_PHYSICS
void PhysicsDemoDisabled::onEnter()
{
auto label = LabelTTF::create("Should define CC_USE_PHYSICS\n to run this test case",
"Arial",
18);
auto size = Director::getInstance()->getWinSize();
label->setPosition(Point(size.width/2, size.height/2));
addChild(label);
}
#else
PhysicsDemo::PhysicsDemo()
: _scene(nullptr)
, _spriteTexture(nullptr)
, _ball(nullptr)
{
}
PhysicsDemo::~PhysicsDemo()
{
}
std::string PhysicsDemo::title() const
{
return "PhysicsTest";
}
std::string PhysicsDemo::subtitle() const
{
return "";
}
void PhysicsDemo::restartCallback(Object* sender)
{
auto s = new PhysicsTestScene();
s->addChild( restart() );
Director::getInstance()->replaceScene(s);
s->release();
}
void PhysicsDemo::nextCallback(Object* sender)
{
auto s = new PhysicsTestScene();
s->addChild( next() );
Director::getInstance()->replaceScene(s);
s->release();
}
void PhysicsDemo::backCallback(Object* sender)
{
auto s = new PhysicsTestScene();
s->addChild( back() );
Director::getInstance()->replaceScene(s);
s->release();
}
void PhysicsDemo::onEnter()
{
BaseTest::onEnter();
_scene = dynamic_cast<PhysicsTestScene*>(this->getParent());
_spriteTexture = SpriteBatchNode::create("Images/grossini_dance_atlas.png", 100)->getTexture();
// menu for debug layer
MenuItemFont::setFontSize(18);
auto item = MenuItemFont::create("Toggle debug", CC_CALLBACK_1(PhysicsDemo::toggleDebugCallback, this));
auto menu = Menu::create(item, NULL);
this->addChild(menu);
menu->setPosition(Point(VisibleRect::right().x-50, VisibleRect::top().y-10));
}
Sprite* PhysicsDemo::addGrossiniAtPosition(Point p, float scale/* = 1.0*/)
{
CCLOG("Add sprite %0.2f x %02.f",p.x,p.y);
int posx, posy;
posx = CCRANDOM_0_1() * 200.0f;
posy = CCRANDOM_0_1() * 200.0f;
posx = (posx % 4) * 85;
posy = (posy % 3) * 121;
auto sp = Sprite::createWithTexture(_spriteTexture, Rect(posx, posy, 85, 121));
sp->setScale(scale);
sp->setPhysicsBody(PhysicsBody::createBox(Size(48.0f * scale, 108.0f * scale)));
this->addChild(sp);
sp->setPosition(p);
return sp;
}
void PhysicsDemo::toggleDebugCallback(Object* sender)
{
if (_scene != nullptr)
{
_scene->toggleDebug();
}
}
PhysicsDemoClickAdd::~PhysicsDemoClickAdd()
{
Device::setAccelerometerEnabled(false);
}
void PhysicsDemoClickAdd::onEnter()
{
PhysicsDemo::onEnter();
auto touchListener = EventListenerTouchAllAtOnce::create();
touchListener->onTouchesEnded = CC_CALLBACK_2(PhysicsDemoClickAdd::onTouchesEnded, this);
_eventDispatcher->addEventListenerWithSceneGraphPriority(touchListener, this);
Device::setAccelerometerEnabled(true);
auto accListener = EventListenerAcceleration::create(CC_CALLBACK_2(PhysicsDemoClickAdd::onAcceleration, this));
_eventDispatcher->addEventListenerWithSceneGraphPriority(accListener, this);
auto node = Node::create();
node->setPhysicsBody(PhysicsBody::createEdgeBox(VisibleRect::getVisibleRect().size));
node->setPosition(VisibleRect::center());
this->addChild(node);
addGrossiniAtPosition(VisibleRect::center());
}
std::string PhysicsDemoClickAdd::subtitle() const
{
return "multi touch to add grossini";
}
void PhysicsDemoClickAdd::onTouchesEnded(const std::vector<Touch*>& touches, Event* event)
{
//Add a new body/atlas sprite at the touched location
for( auto &touch: touches)
{
auto location = touch->getLocation();
addGrossiniAtPosition( location );
}
}
void PhysicsDemoClickAdd::onAcceleration(Acceleration* acc, Event* event)
{
static float prevX=0, prevY=0;
#define kFilterFactor 0.05f
float accelX = (float) acc->x * kFilterFactor + (1- kFilterFactor)*prevX;
float accelY = (float) acc->y * kFilterFactor + (1- kFilterFactor)*prevY;
prevX = accelX;
prevY = accelY;
auto v = Point( accelX, accelY);
v = v * 200;
if(_scene != nullptr)
{
_scene->getPhysicsWorld()->setGravity(v);
}
}
namespace
{
static const int logo_width = 188;
static const int logo_height = 35;
static const int logo_row_length = 24;
static const char logo_image[] =
{
15,-16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,-64,15,63,-32,-2,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,31,-64,15,127,-125,-1,-128,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,127,-64,15,127,15,-1,-64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,-1,-64,15,-2,
31,-1,-64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,-1,-64,0,-4,63,-1,-32,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,1,-1,-64,15,-8,127,-1,-32,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
1,-1,-64,0,-8,-15,-1,-32,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,-31,-1,-64,15,-8,-32,
-1,-32,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,-15,-1,-64,9,-15,-32,-1,-32,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,31,-15,-1,-64,0,-15,-32,-1,-32,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,63,-7,-1,-64,9,-29,-32,127,-61,-16,63,15,-61,-1,-8,31,-16,15,-8,126,7,-31,
-8,31,-65,-7,-1,-64,9,-29,-32,0,7,-8,127,-97,-25,-1,-2,63,-8,31,-4,-1,15,-13,
-4,63,-1,-3,-1,-64,9,-29,-32,0,7,-8,127,-97,-25,-1,-2,63,-8,31,-4,-1,15,-13,
-2,63,-1,-3,-1,-64,9,-29,-32,0,7,-8,127,-97,-25,-1,-1,63,-4,63,-4,-1,15,-13,
-2,63,-33,-1,-1,-32,9,-25,-32,0,7,-8,127,-97,-25,-1,-1,63,-4,63,-4,-1,15,-13,
-1,63,-33,-1,-1,-16,9,-25,-32,0,7,-8,127,-97,-25,-1,-1,63,-4,63,-4,-1,15,-13,
-1,63,-49,-1,-1,-8,9,-57,-32,0,7,-8,127,-97,-25,-8,-1,63,-2,127,-4,-1,15,-13,
-1,-65,-49,-1,-1,-4,9,-57,-32,0,7,-8,127,-97,-25,-8,-1,63,-2,127,-4,-1,15,-13,
-1,-65,-57,-1,-1,-2,9,-57,-32,0,7,-8,127,-97,-25,-8,-1,63,-2,127,-4,-1,15,-13,
-1,-1,-57,-1,-1,-1,9,-57,-32,0,7,-1,-1,-97,-25,-8,-1,63,-1,-1,-4,-1,15,-13,-1,
-1,-61,-1,-1,-1,-119,-57,-32,0,7,-1,-1,-97,-25,-8,-1,63,-1,-1,-4,-1,15,-13,-1,
-1,-61,-1,-1,-1,-55,-49,-32,0,7,-1,-1,-97,-25,-8,-1,63,-1,-1,-4,-1,15,-13,-1,
-1,-63,-1,-1,-1,-23,-49,-32,127,-57,-1,-1,-97,-25,-1,-1,63,-1,-1,-4,-1,15,-13,
-1,-1,-63,-1,-1,-1,-16,-49,-32,-1,-25,-1,-1,-97,-25,-1,-1,63,-33,-5,-4,-1,15,
-13,-1,-1,-64,-1,-9,-1,-7,-49,-32,-1,-25,-8,127,-97,-25,-1,-1,63,-33,-5,-4,-1,
15,-13,-1,-1,-64,-1,-13,-1,-32,-49,-32,-1,-25,-8,127,-97,-25,-1,-2,63,-49,-13,
-4,-1,15,-13,-1,-1,-64,127,-7,-1,-119,-17,-15,-1,-25,-8,127,-97,-25,-1,-2,63,
-49,-13,-4,-1,15,-13,-3,-1,-64,127,-8,-2,15,-17,-1,-1,-25,-8,127,-97,-25,-1,
-8,63,-49,-13,-4,-1,15,-13,-3,-1,-64,63,-4,120,0,-17,-1,-1,-25,-8,127,-97,-25,
-8,0,63,-57,-29,-4,-1,15,-13,-4,-1,-64,63,-4,0,15,-17,-1,-1,-25,-8,127,-97,
-25,-8,0,63,-57,-29,-4,-1,-1,-13,-4,-1,-64,31,-2,0,0,103,-1,-1,-57,-8,127,-97,
-25,-8,0,63,-57,-29,-4,-1,-1,-13,-4,127,-64,31,-2,0,15,103,-1,-1,-57,-8,127,
-97,-25,-8,0,63,-61,-61,-4,127,-1,-29,-4,127,-64,15,-8,0,0,55,-1,-1,-121,-8,
127,-97,-25,-8,0,63,-61,-61,-4,127,-1,-29,-4,63,-64,15,-32,0,0,23,-1,-2,3,-16,
63,15,-61,-16,0,31,-127,-127,-8,31,-1,-127,-8,31,-128,7,-128,0,0
};
static inline int get_pixel(int x, int y)
{
return (logo_image[(x>>3) + y*logo_row_length]>>(~x&0x7)) & 1;
}
static inline float frand(void)
{
return rand()/RAND_MAX;
}
}
Sprite* PhysicsDemo::makeBall(Point point, float radius, PhysicsMaterial material)
{
Sprite* ball = nullptr;
if (_ball != nullptr)
{
ball = Sprite::createWithTexture(_ball->getTexture());
}else
{
ball = Sprite::create("Images/ball.png");
}
ball->setScale(0.13f * radius);
auto body = PhysicsBody::createCircle(radius, material);
ball->setPhysicsBody(body);
ball->setPosition(Point(point.x, point.y));
return ball;
}
Sprite* PhysicsDemo::makeBox(Point point, Size size, PhysicsMaterial material)
{
auto box = CCRANDOM_0_1() > 0.5f ? Sprite::create("Images/YellowSquare.png") : Sprite::create("Images/CyanSquare.png");
box->setScaleX(size.width/100.0f);
box->setScaleY(size.height/100.0f);
auto body = PhysicsBody::createBox(size);
box->setPhysicsBody(body);
box->setPosition(Point(point.x, point.y));
return box;
}
Sprite* PhysicsDemo::makeTriangle(Point point, Size size, PhysicsMaterial material)
{
auto triangle = CCRANDOM_0_1() > 0.5f ? Sprite::create("Images/YellowTriangle.png") : Sprite::create("Images/CyanTriangle.png");
if(size.height == 0)
{
triangle->setScale(size.width/100.0f);
}else
{
triangle->setScaleX(size.width/50.0f);
triangle->setScaleY(size.height/43.5f);
}
Point vers[] = { Point(0, size.height/2), Point(size.width/2, -size.height/2), Point(-size.width/2, -size.height/2)};
auto body = PhysicsBody::createPolygon(vers, 3);
triangle->setPhysicsBody(body);
triangle->setPosition(Point(point.x, point.y));
return triangle;
}
bool PhysicsDemo::onTouchBegan(Touch* touch, Event* event)
{
auto location = touch->getLocation();
auto arr = _scene->getPhysicsWorld()->getShapes(location);
PhysicsBody* body = nullptr;
for (auto& obj : arr)
{
if ((obj->getBody()->getTag() & DRAG_BODYS_TAG) != 0)
{
body = obj->getBody();
break;
}
}
if (body != nullptr)
{
Node* mouse = Node::create();
mouse->setPhysicsBody(PhysicsBody::create(PHYSICS_INFINITY, PHYSICS_INFINITY));
mouse->getPhysicsBody()->setDynamic(false);
mouse->setPosition(location);
this->addChild(mouse);
PhysicsJointPin* joint = PhysicsJointPin::construct(mouse->getPhysicsBody(), body, location);
joint->setMaxForce(5000.0f * body->getMass());
_scene->getPhysicsWorld()->addJoint(joint);
_mouses.insert(std::make_pair(touch->getID(), mouse));
return true;
}
return false;
}
void PhysicsDemo::onTouchMoved(Touch* touch, Event* event)
{
auto it = _mouses.find(touch->getID());
if (it != _mouses.end())
{
it->second->getPhysicsBody()->setVelocity((touch->getLocation() - it->second->getPosition()) * 60.0f);
it->second->setPosition(touch->getLocation());
}
}
void PhysicsDemo::onTouchEnded(Touch* touch, Event* event)
{
auto it = _mouses.find(touch->getID());
if (it != _mouses.end())
{
this->removeChild(it->second);
_mouses.erase(it);
}
}
void PhysicsDemoLogoSmash::onEnter()
{
PhysicsDemo::onEnter();
_scene->getPhysicsWorld()->setGravity(Point(0, 0));
_scene->getPhysicsWorld()->setUpdateRate(5.0f);
_ball = SpriteBatchNode::create("Images/ball.png", sizeof(logo_image)/sizeof(logo_image[0]));
addChild(_ball);
for (int y = 0; y < logo_height; ++y)
{
for (int x = 0; x < logo_width; ++x)
{
if (get_pixel(x, y))
{
float x_jitter = 0.05*frand();
float y_jitter = 0.05*frand();
Node* ball = makeBall(Point(2*(x - logo_width/2 + x_jitter) + VisibleRect::getVisibleRect().size.width/2,
2*(logo_height-y + y_jitter) + VisibleRect::getVisibleRect().size.height/2 - logo_height/2),
0.95f, PhysicsMaterial(0.01f, 0.0f, 0.0f));
ball->getPhysicsBody()->setMass(1.0);
ball->getPhysicsBody()->setMoment(PHYSICS_INFINITY);
_ball->addChild(ball);
}
}
}
auto bullet = makeBall(Point(400, 0), 10, PhysicsMaterial(PHYSICS_INFINITY, 0, 0));
bullet->getPhysicsBody()->setVelocity(Point(200, 0));
bullet->setPosition(Point(-500, VisibleRect::getVisibleRect().size.height/2));
_ball->addChild(bullet);
}
std::string PhysicsDemoLogoSmash::title() const
{
return "Logo Smash";
}void PhysicsDemoPyramidStack::onEnter()
{
PhysicsDemo::onEnter();
auto touchListener = EventListenerTouchOneByOne::create();
touchListener->onTouchBegan = CC_CALLBACK_2(PhysicsDemoPyramidStack::onTouchBegan, this);
touchListener->onTouchMoved = CC_CALLBACK_2(PhysicsDemoPyramidStack::onTouchMoved, this);
touchListener->onTouchEnded = CC_CALLBACK_2(PhysicsDemoPyramidStack::onTouchEnded, this);
_eventDispatcher->addEventListenerWithSceneGraphPriority(touchListener, this);
auto node = Node::create();
node->setPhysicsBody(PhysicsBody::createEdgeSegment(VisibleRect::leftBottom() + Point(0, 50), VisibleRect::rightBottom() + Point(0, 50)));
this->addChild(node);
auto ball = Sprite::create("Images/ball.png");
ball->setScale(1);
ball->setPhysicsBody(PhysicsBody::createCircle(10));
ball->setPosition(VisibleRect::bottom() + Point(0, 60));
this->addChild(ball);
for(int i=0; i<14; i++)
{
for(int j=0; j<=i; j++)
{
auto sp = addGrossiniAtPosition(VisibleRect::bottom() + Point((i/2 - j) * 11, (14 - i) * 23 + 100), 0.2f);
sp->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
}
}
}
std::string PhysicsDemoPyramidStack::title() const
{
return "Pyramid Stack";
}
PhysicsDemoRayCast::PhysicsDemoRayCast()
: _angle(0.0f)
, _node(nullptr)
, _mode(0)
{}
void PhysicsDemoRayCast::onEnter()
{
PhysicsDemo::onEnter();
auto listener = EventListenerTouchAllAtOnce::create();
listener->onTouchesEnded = CC_CALLBACK_2(PhysicsDemoRayCast::onTouchesEnded, this);
_eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
_scene->getPhysicsWorld()->setGravity(Point::ZERO);
auto node = DrawNode::create();
node->setPhysicsBody(PhysicsBody::createEdgeSegment(VisibleRect::leftBottom() + Point(0, 50), VisibleRect::rightBottom() + Point(0, 50)));
node->drawSegment(VisibleRect::leftBottom() + Point(0, 50), VisibleRect::rightBottom() + Point(0, 50), 1, STATIC_COLOR);
this->addChild(node);
MenuItemFont::setFontSize(18);
auto item = MenuItemFont::create("Change Mode(any)", CC_CALLBACK_1(PhysicsDemoRayCast::changeModeCallback, this));
auto menu = Menu::create(item, NULL);
this->addChild(menu);
menu->setPosition(Point(VisibleRect::left().x+100, VisibleRect::top().y-10));
scheduleUpdate();
}
void PhysicsDemoRayCast::changeModeCallback(Object* sender)
{
_mode = (_mode + 1) % 3;
switch (_mode)
{
case 0:
((MenuItemFont*)sender)->setString("Change Mode(any)");
break;
case 1:
((MenuItemFont*)sender)->setString("Change Mode(nearest)");
break;
case 2:
((MenuItemFont*)sender)->setString("Change Mode(multiple)");
break;
default:
break;
}
}
bool PhysicsDemoRayCast::anyRay(PhysicsWorld& world, const PhysicsRayCastInfo& info, void* data)
{
*((Point*)data) = info.contact;
return false;
}
void PhysicsDemoRayCast::update(float delta)
{
float L = 150.0f;
Point point1 = VisibleRect::center();
Point d(L * cosf(_angle), L * sinf(_angle));
Point point2 = point1 + d;
removeChild(_node);
_node = DrawNode::create();
switch (_mode)
{
case 0:
{
Point point3 = point2;
auto func = CC_CALLBACK_3(PhysicsDemoRayCast::anyRay, this);
_scene->getPhysicsWorld()->rayCast(func, point1, point2, &point3);
_node->drawSegment(point1, point3, 1, STATIC_COLOR);
if (point2 != point3)
{
_node->drawDot(point3, 2, Color4F(1.0f, 1.0f, 1.0f, 1.0f));
}
addChild(_node);
break;
}
case 1:
{
Point point3 = point2;
float friction = 1.0f;
PhysicsRayCastCallbackFunc func = [&point3, &friction](PhysicsWorld& world, const PhysicsRayCastInfo& info, void* data)->bool
{
if (friction > info.fraction)
{
point3 = info.contact;
friction = info.fraction;
}
return true;
};
_scene->getPhysicsWorld()->rayCast(func, point1, point2, nullptr);
_node->drawSegment(point1, point3, 1, STATIC_COLOR);
if (point2 != point3)
{
_node->drawDot(point3, 2, Color4F(1.0f, 1.0f, 1.0f, 1.0f));
}
addChild(_node);
break;
}
case 2:
{
#define MAX_MULTI_RAYCAST_NUM 5
Point points[MAX_MULTI_RAYCAST_NUM];
int num = 0;
PhysicsRayCastCallbackFunc func = [&points, &num](PhysicsWorld& world, const PhysicsRayCastInfo& info, void* data)->bool
{
if (num < MAX_MULTI_RAYCAST_NUM)
{
points[num++] = info.contact;
}
return true;
};
_scene->getPhysicsWorld()->rayCast(func, point1, point2, nullptr);
_node->drawSegment(point1, point2, 1, STATIC_COLOR);
for (int i = 0; i < num; ++i)
{
_node->drawDot(points[i], 2, Color4F(1.0f, 1.0f, 1.0f, 1.0f));
}
addChild(_node);
break;
}
default:
break;
}
_angle += 0.25f * (float)M_PI / 180.0f;
}
void PhysicsDemoRayCast::onTouchesEnded(const std::vector<Touch*>& touches, Event* event)
{
//Add a new body/atlas sprite at the touched location
for( auto &touch: touches)
{
auto location = touch->getLocation();
float r = CCRANDOM_0_1();
if (r < 1.0f/3.0f)
{
addChild(makeBall(location, 5 + CCRANDOM_0_1()*10));
}else if(r < 2.0f/3.0f)
{
addChild(makeBox(location, Size(10 + CCRANDOM_0_1()*15, 10 + CCRANDOM_0_1()*15)));
}else
{
addChild(makeTriangle(location, Size(10 + CCRANDOM_0_1()*20, 10 + CCRANDOM_0_1()*20)));
}
}
}
std::string PhysicsDemoRayCast::title() const
{
return "Ray Cast";
}
void PhysicsDemoJoints::onEnter()
{
PhysicsDemo::onEnter();
_scene->toggleDebug();
auto listener = EventListenerTouchOneByOne::create();
listener->onTouchBegan = CC_CALLBACK_2(PhysicsDemoJoints::onTouchBegan, this);
listener->onTouchMoved = CC_CALLBACK_2(PhysicsDemoJoints::onTouchMoved, this);
listener->onTouchEnded = CC_CALLBACK_2(PhysicsDemoJoints::onTouchEnded, this);
_eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
//_scene->getPhysicsWorld()->setGravity(Point::ZERO);
float width = (VisibleRect::getVisibleRect().size.width - 10) / 4;
float height = (VisibleRect::getVisibleRect().size.height - 50) / 4;
Node* node = Node::create();
PhysicsBody* box = PhysicsBody::create();
node->setPhysicsBody(box);
box->setDynamic(false);
node->setPosition(Point::ZERO);
this->addChild(node);
for (int i = 0; i < 4; ++i)
{
for (int j = 0; j < 4; ++j)
{
Point offset(VisibleRect::leftBottom().x + 5 + j * width + width/2, VisibleRect::leftBottom().y + 50 + i * height + height/2);
box->addShape(PhysicsShapeEdgeBox::create(Size(width, height), PHYSICSSHAPE_MATERIAL_DEFAULT, 1, offset));
switch (i*4 + j)
{
case 0:
{
auto sp1 = makeBall(offset - Point(30, 0), 10);
sp1->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
auto sp2 = makeBall(offset + Point(30, 0), 10);
sp2->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
PhysicsJointPin* joint = PhysicsJointPin::construct(sp1->getPhysicsBody(), sp2->getPhysicsBody(), offset);
_scene->getPhysicsWorld()->addJoint(joint);
this->addChild(sp1);
this->addChild(sp2);
break;
}
case 1:
{
auto sp1 = makeBall(offset - Point(30, 0), 10);
sp1->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
auto sp2 = makeBox(offset + Point(30, 0), Size(30, 10));
sp2->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
PhysicsJointFixed* joint = PhysicsJointFixed::construct(sp1->getPhysicsBody(), sp2->getPhysicsBody(), offset);
_scene->getPhysicsWorld()->addJoint(joint);
this->addChild(sp1);
this->addChild(sp2);
break;
}
case 2:
{
auto sp1 = makeBall(offset - Point(30, 0), 10);
sp1->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
auto sp2 = makeBox(offset + Point(30, 0), Size(30, 10));
sp2->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
PhysicsJointDistance* joint = PhysicsJointDistance::construct(sp1->getPhysicsBody(), sp2->getPhysicsBody(), Point::ZERO, Point::ZERO);
_scene->getPhysicsWorld()->addJoint(joint);
this->addChild(sp1);
this->addChild(sp2);
break;
}
case 3:
{
auto sp1 = makeBall(offset - Point(30, 0), 10);
sp1->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
auto sp2 = makeBox(offset + Point(30, 0), Size(30, 10));
sp2->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
PhysicsJointLimit* joint = PhysicsJointLimit::construct(sp1->getPhysicsBody(), sp2->getPhysicsBody(), Point::ZERO, Point::ZERO, 30.0f, 60.0f);
_scene->getPhysicsWorld()->addJoint(joint);
this->addChild(sp1);
this->addChild(sp2);
break;
}
case 4:
{
auto sp1 = makeBall(offset - Point(30, 0), 10);
sp1->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
auto sp2 = makeBox(offset + Point(30, 0), Size(30, 10));
sp2->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
PhysicsJointSpring* joint = PhysicsJointSpring::construct(sp1->getPhysicsBody(), sp2->getPhysicsBody(), Point::ZERO, Point::ZERO, 500.0f, 0.3f);
_scene->getPhysicsWorld()->addJoint(joint);
this->addChild(sp1);
this->addChild(sp2);
break;
}
case 5:
{
auto sp1 = makeBall(offset - Point(30, 0), 10);
sp1->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
auto sp2 = makeBox(offset + Point(30, 0), Size(30, 10));
sp2->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
PhysicsJointGroove* joint = PhysicsJointGroove::construct(sp1->getPhysicsBody(), sp2->getPhysicsBody(), Point(30, 15), Point(30, -15), Point(-30, 0));
_scene->getPhysicsWorld()->addJoint(joint);
this->addChild(sp1);
this->addChild(sp2);
break;
}
case 6:
{
auto sp1 = makeBox(offset - Point(30, 0), Size(30, 10));
sp1->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
auto sp2 = makeBox(offset + Point(30, 0), Size(30, 10));
sp2->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
_scene->getPhysicsWorld()->addJoint(PhysicsJointPin::construct(sp1->getPhysicsBody(), box, sp1->getPosition()));
_scene->getPhysicsWorld()->addJoint(PhysicsJointPin::construct(sp2->getPhysicsBody(), box, sp2->getPosition()));
PhysicsJointRotarySpring* joint = PhysicsJointRotarySpring::construct(sp1->getPhysicsBody(), sp2->getPhysicsBody(), 3000.0f, 60.0f);
_scene->getPhysicsWorld()->addJoint(joint);
this->addChild(sp1);
this->addChild(sp2);
break;
}
case 7:
{
auto sp1 = makeBox(offset - Point(30, 0), Size(30, 10));
sp1->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
auto sp2 = makeBox(offset + Point(30, 0), Size(30, 10));
sp2->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
_scene->getPhysicsWorld()->addJoint(PhysicsJointPin::construct(sp1->getPhysicsBody(), box, sp1->getPosition()));
_scene->getPhysicsWorld()->addJoint(PhysicsJointPin::construct(sp2->getPhysicsBody(), box, sp2->getPosition()));
PhysicsJointRotaryLimit* joint = PhysicsJointRotaryLimit::construct(sp1->getPhysicsBody(), sp2->getPhysicsBody(), 0.0f, M_PI_2);
_scene->getPhysicsWorld()->addJoint(joint);
this->addChild(sp1);
this->addChild(sp2);
break;
}
case 8:
{
auto sp1 = makeBox(offset - Point(30, 0), Size(30, 10));
sp1->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
auto sp2 = makeBox(offset + Point(30, 0), Size(30, 10));
sp2->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
_scene->getPhysicsWorld()->addJoint(PhysicsJointPin::construct(sp1->getPhysicsBody(), box, sp1->getPosition()));
_scene->getPhysicsWorld()->addJoint(PhysicsJointPin::construct(sp2->getPhysicsBody(), box, sp2->getPosition()));
PhysicsJointRatchet* joint = PhysicsJointRatchet::construct(sp1->getPhysicsBody(), sp2->getPhysicsBody(), 0.0f, M_PI_2);
_scene->getPhysicsWorld()->addJoint(joint);
this->addChild(sp1);
this->addChild(sp2);
break;
}
case 9:
{
auto sp1 = makeBox(offset - Point(30, 0), Size(30, 10));
sp1->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
auto sp2 = makeBox(offset + Point(30, 0), Size(30, 10));
sp2->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
_scene->getPhysicsWorld()->addJoint(PhysicsJointPin::construct(sp1->getPhysicsBody(), box, sp1->getPosition()));
_scene->getPhysicsWorld()->addJoint(PhysicsJointPin::construct(sp2->getPhysicsBody(), box, sp2->getPosition()));
PhysicsJointGear* joint = PhysicsJointGear::construct(sp1->getPhysicsBody(), sp2->getPhysicsBody(), 0.0f, 2.0f);
_scene->getPhysicsWorld()->addJoint(joint);
this->addChild(sp1);
this->addChild(sp2);
break;
}
case 10:
{
auto sp1 = makeBox(offset - Point(30, 0), Size(30, 10));
sp1->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
auto sp2 = makeBox(offset + Point(30, 0), Size(30, 10));
sp2->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
_scene->getPhysicsWorld()->addJoint(PhysicsJointPin::construct(sp1->getPhysicsBody(), box, sp1->getPosition()));
_scene->getPhysicsWorld()->addJoint(PhysicsJointPin::construct(sp2->getPhysicsBody(), box, sp2->getPosition()));
PhysicsJointMotor* joint = PhysicsJointMotor::construct(sp1->getPhysicsBody(), sp2->getPhysicsBody(), M_PI_2);
_scene->getPhysicsWorld()->addJoint(joint);
this->addChild(sp1);
this->addChild(sp2);
break;
}
default:
break;
}
}
}
}
std::string PhysicsDemoJoints::title() const
{
return "Joints";
}
void PhysicsDemoActions::onEnter()
{
PhysicsDemo::onEnter();
auto touchListener = EventListenerTouchOneByOne::create();
touchListener->onTouchBegan = CC_CALLBACK_2(PhysicsDemoActions::onTouchBegan, this);
touchListener->onTouchMoved = CC_CALLBACK_2(PhysicsDemoActions::onTouchMoved, this);
touchListener->onTouchEnded = CC_CALLBACK_2(PhysicsDemoActions::onTouchEnded, this);
_eventDispatcher->addEventListenerWithSceneGraphPriority(touchListener, this);
auto node = Node::create();
node->setPhysicsBody(PhysicsBody::createEdgeBox(VisibleRect::getVisibleRect().size));
node->setPosition(VisibleRect::center());
this->addChild(node);
Sprite* sp1 = addGrossiniAtPosition(VisibleRect::center());
Sprite* sp2 = addGrossiniAtPosition(VisibleRect::left() + Point(50, 0));
Sprite* sp3 = addGrossiniAtPosition(VisibleRect::right() - Point(20, 0));
Sprite* sp4 = addGrossiniAtPosition(VisibleRect::leftTop() + Point(50, -50));
sp4->getPhysicsBody()->setGravityEnable(false);
auto actionTo = JumpTo::create(2, Point(100,100), 50, 4);
auto actionBy = JumpBy::create(2, Point(300,0), 50, 4);
auto actionUp = JumpBy::create(2, Point(0,50), 80, 4);
auto actionByBack = actionBy->reverse();
sp1->runAction(RepeatForever::create(actionUp));
sp2->runAction(RepeatForever::create(Sequence::create(actionBy, actionByBack, NULL)));
sp3->runAction(actionTo);
sp4->runAction(RepeatForever::create(Sequence::create(actionBy->clone(), actionByBack->clone(), NULL)));
}
std::string PhysicsDemoActions::title() const
{
return "Actions";
}
void PhysicsDemoPump::onEnter()
{
PhysicsDemo::onEnter();
_scene->toggleDebug();
_distance = 0.0f;
_rotationV = 0.0f;
auto touchListener = EventListenerTouchOneByOne::create();
touchListener->onTouchBegan = CC_CALLBACK_2(PhysicsDemoPump::onTouchBegan, this);
touchListener->onTouchMoved = CC_CALLBACK_2(PhysicsDemoPump::onTouchMoved, this);
touchListener->onTouchEnded = CC_CALLBACK_2(PhysicsDemoPump::onTouchEnded, this);
_eventDispatcher->addEventListenerWithSceneGraphPriority(touchListener, this);
scheduleUpdate();
auto node = Node::create();
auto body = PhysicsBody::create();
body->setDynamic(false);
PhysicsMaterial staticMaterial(PHYSICS_INFINITY, 0, 0.5f);
body->addShape(PhysicsShapeEdgeSegment::create(VisibleRect::leftTop() + Point(50, 0), VisibleRect::leftTop() + Point(50, -130), staticMaterial, 2.0f));
body->addShape(PhysicsShapeEdgeSegment::create(VisibleRect::leftTop() + Point(190, 0), VisibleRect::leftTop() + Point(100, -50), staticMaterial, 2.0f));
body->addShape(PhysicsShapeEdgeSegment::create(VisibleRect::leftTop() + Point(100, -50), VisibleRect::leftTop() + Point(100, -90), staticMaterial, 2.0f));
body->addShape(PhysicsShapeEdgeSegment::create(VisibleRect::leftTop() + Point(50, -130), VisibleRect::leftTop() + Point(100, -145), staticMaterial, 2.0f));
body->addShape(PhysicsShapeEdgeSegment::create(VisibleRect::leftTop() + Point(100, -145), VisibleRect::leftBottom() + Point(100, 80), staticMaterial, 2.0f));
body->addShape(PhysicsShapeEdgeSegment::create(VisibleRect::leftTop() + Point(150, -80), VisibleRect::leftBottom() + Point(150, 80), staticMaterial, 2.0f));
body->addShape(PhysicsShapeEdgeSegment::create(VisibleRect::leftTop() + Point(150, -80), VisibleRect::rightTop() + Point(-100, -150), staticMaterial, 2.0f));
body->setCategoryBitmask(0x01);
// balls
for (int i = 0; i < 6; ++i)
{
auto ball = makeBall(VisibleRect::leftTop() + Point(75 + CCRANDOM_0_1() * 90, 0), 22, PhysicsMaterial(0.05f, 0.0f, 0.1f));
ball->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
addChild(ball);
}
node->setPhysicsBody(body);
this->addChild(node);
Point vec[4] =
{
VisibleRect::leftTop() + Point(102, -148),
VisibleRect::leftTop() + Point(148, -161),
VisibleRect::leftBottom() + Point(148, 20),
VisibleRect::leftBottom() + Point(102, 20)
};
auto _world = _scene->getPhysicsWorld();
// small gear
auto sgear = Node::create();
auto sgearB = PhysicsBody::createCircle(44);
sgear->setPhysicsBody(sgearB);
sgear->setPosition(VisibleRect::leftBottom() + Point(125, 0));
this->addChild(sgear);
sgearB->setCategoryBitmask(0x04);
sgearB->setCollisionBitmask(0x04);
sgearB->setTag(1);
_world->addJoint(PhysicsJointPin::construct(body, sgearB, sgearB->getPosition()));
// big gear
auto bgear = Node::create();
auto bgearB = PhysicsBody::createCircle(100);
bgear->setPhysicsBody(bgearB);
bgear->setPosition(VisibleRect::leftBottom() + Point(275, 0));
this->addChild(bgear);
bgearB->setCategoryBitmask(0x04);
_world->addJoint(PhysicsJointPin::construct(body, bgearB, bgearB->getPosition()));
// pump
auto pump = Node::create();
auto center = PhysicsShape::getPolyonCenter(vec, 4);
pump->setPosition(center);
auto pumpB = PhysicsBody::createPolygon(vec, 4, PHYSICSBODY_MATERIAL_DEFAULT, -center);
pump->setPhysicsBody(pumpB);
this->addChild(pump);
pumpB->setCategoryBitmask(0x02);
pumpB->setGravityEnable(false);
_world->addJoint(PhysicsJointDistance::construct(pumpB, sgearB, Point(0, 0), Point(0, -44)));
// plugger
Point seg[] = {VisibleRect::leftTop() + Point(75, -120), VisibleRect::leftBottom() + Point(75, -100)};
Point segCenter = (seg[1] + seg[0])/2;
seg[1] -= segCenter;
seg[0] -= segCenter;
auto plugger = Node::create();
auto pluggerB = PhysicsBody::createEdgeSegment(seg[0], seg[1], PhysicsMaterial(0.01f, 0.0f, 0.5f), 20);
pluggerB->setDynamic(true);
pluggerB->setMass(30);
pluggerB->setMoment(100000);
plugger->setPhysicsBody(pluggerB);
plugger->setPosition(segCenter);
this->addChild(plugger);
pluggerB->setCategoryBitmask(0x02);
sgearB->setCollisionBitmask(0x04 | 0x01);
_world->addJoint(PhysicsJointPin::construct(body, pluggerB, VisibleRect::leftBottom() + Point(75, -90)));
_world->addJoint(PhysicsJointDistance::construct(pluggerB, sgearB, pluggerB->world2Local(VisibleRect::leftBottom() + Point(75, 0)), Point(44, 0)));
}
void PhysicsDemoPump::update(float delta)
{
for (const auto& body : _scene->getPhysicsWorld()->getAllBodies())
{
if (body->getTag() == DRAG_BODYS_TAG && body->getPosition().y < 0.0f)
{
body->getNode()->setPosition(VisibleRect::leftTop() + Point(75 + CCRANDOM_0_1() * 90, 0));
body->setVelocity(Point(0, 0));
}
}
PhysicsBody* gear = _scene->getPhysicsWorld()->getBody(1);
if (gear != nullptr)
{
if (_distance != 0.0f)
{
_rotationV += _distance/2500.0f;
if (_rotationV > 30) _rotationV = 30.0f;
if (_rotationV < -30) _rotationV = -30.0f;
}
gear->setAngularVelocity(_rotationV);
_rotationV *= 0.995f;
}
}
bool PhysicsDemoPump::onTouchBegan(Touch* touch, Event* event)
{
PhysicsDemo::onTouchBegan(touch, event);
_distance = touch->getLocation().x - VisibleRect::center().x;
return true;
}
void PhysicsDemoPump::onTouchMoved(Touch* touch, Event* event)
{
PhysicsDemo::onTouchMoved(touch, event);
_distance = touch->getLocation().x - VisibleRect::center().x;
}
void PhysicsDemoPump::onTouchEnded(Touch* touch, Event* event)
{
PhysicsDemo::onTouchEnded(touch, event);
_distance = 0;
}
std::string PhysicsDemoPump::title() const
{
return "Pump";
}
std::string PhysicsDemoPump::subtitle() const
{
return "touch screen on left or right";
}
void PhysicsDemoOneWayPlatform::onEnter()
{
PhysicsDemo::onEnter();
auto touchListener = EventListenerTouchOneByOne::create();
touchListener->onTouchBegan = CC_CALLBACK_2(PhysicsDemoOneWayPlatform::onTouchBegan, this);
touchListener->onTouchMoved = CC_CALLBACK_2(PhysicsDemoOneWayPlatform::onTouchMoved, this);
touchListener->onTouchEnded = CC_CALLBACK_2(PhysicsDemoOneWayPlatform::onTouchEnded, this);
_eventDispatcher->addEventListenerWithSceneGraphPriority(touchListener, this);
auto ground = Node::create();
ground->setPhysicsBody(PhysicsBody::createEdgeSegment(VisibleRect::leftBottom() + Point(0, 50), VisibleRect::rightBottom() + Point(0, 50)));
this->addChild(ground);
auto platform = makeBox(VisibleRect::center(), Size(200, 50));
platform->getPhysicsBody()->setDynamic(false);
this->addChild(platform);
auto ball = makeBall(VisibleRect::center() - Point(0, 50), 20);
ball->getPhysicsBody()->setVelocity(Point(0, 150));
ball->getPhysicsBody()->setTag(DRAG_BODYS_TAG);
ball->getPhysicsBody()->setMass(1.0f);
this->addChild(ball);
auto contactListener = EventListenerPhysicsContactWithBodies::create(platform->getPhysicsBody(), ball->getPhysicsBody());
contactListener->onContactBegin = CC_CALLBACK_2(PhysicsDemoOneWayPlatform::onContactBegin, this);
_eventDispatcher->addEventListenerWithSceneGraphPriority(contactListener, this);
}
bool PhysicsDemoOneWayPlatform::onContactBegin(EventCustom* event, const PhysicsContact& contact)
{
return contact.getContactData()->normal.y < 0;
}
std::string PhysicsDemoOneWayPlatform::title() const
{
return "One Way Platform";
}
void PhysicsDemoSlice::onEnter()
{
PhysicsDemo::onEnter();
_scene->toggleDebug();
_sliceTag = 1;
auto touchListener = EventListenerTouchOneByOne::create();
touchListener->onTouchBegan = [](Touch* touch, Event* event)->bool{ return true; };
touchListener->onTouchEnded = CC_CALLBACK_2(PhysicsDemoSlice::onTouchEnded, this);
_eventDispatcher->addEventListenerWithSceneGraphPriority(touchListener, this);
auto ground = Node::create();
ground->setPhysicsBody(PhysicsBody::createEdgeSegment(VisibleRect::leftBottom() + Point(0, 50), VisibleRect::rightBottom() + Point(0, 50)));
this->addChild(ground);
auto box = Node::create();
Point points[4] = {Point(-100, -100), Point(-100, 100), Point(100, 100), Point(100, -100)};
box->setPhysicsBody(PhysicsBody::createPolygon(points, 4));
box->setPosition(VisibleRect::center());
box->getPhysicsBody()->setTag(_sliceTag);
addChild(box);
}
bool PhysicsDemoSlice::slice(PhysicsWorld &world, const PhysicsRayCastInfo& info, void *data)
{
if (info.shape->getBody()->getTag() != _sliceTag)
{
return true;
}
if (!info.shape->containsPoint(info.start) && !info.shape->containsPoint(info.end))
{
Point normal = info.end - info.start;
normal = normal.getPerp().normalize();
float dist = info.start.dot(normal);
dist = dist;
clipPoly(dynamic_cast<PhysicsShapePolygon*>(info.shape), normal, dist);
clipPoly(dynamic_cast<PhysicsShapePolygon*>(info.shape), -normal, -dist);
info.shape->getBody()->removeFromWorld();
}
return true;
}
void PhysicsDemoSlice::clipPoly(PhysicsShapePolygon* shape, Point normal, float distance)
{
PhysicsBody* body = shape->getBody();
int count = shape->getPointsCount();
int pointsCount = 0;
Point* points = new Point[count + 1];
for (int i=0, j=count-1; i<count; j=i, ++i)
{
Point a = body->local2World(shape->getPoint(j));
float aDist = a.dot(normal) - distance;
if (aDist < 0.0f)
{
points[pointsCount] = a;
++pointsCount;
}
Point b = body->local2World(shape->getPoint(i));
float bDist = b.dot(normal) - distance;
if (aDist*bDist < 0.0f)
{
float t = std::fabs(aDist)/(std::fabs(aDist) + std::fabs(bDist));
points[pointsCount] = a.lerp(b, t);
++pointsCount;
}
}
Point center = PhysicsShape::getPolyonCenter(points, pointsCount);
Node* node = Node::create();
PhysicsBody* polyon = PhysicsBody::createPolygon(points, pointsCount, PHYSICSBODY_MATERIAL_DEFAULT, -center);
node->setPosition(center);
node->setPhysicsBody(polyon);
polyon->setVelocity(body->getVelocityAtWorldPoint(center));
polyon->setAngularVelocity(body->getAngularVelocity());
polyon->setTag(_sliceTag);
addChild(node);
delete[] points;
}
void PhysicsDemoSlice::onTouchEnded(Touch *touch, Event *event)
{
auto func = CC_CALLBACK_3(PhysicsDemoSlice::slice, this);
_scene->getPhysicsWorld()->rayCast(func, touch->getStartLocation(), touch->getLocation(), nullptr);
}
std::string PhysicsDemoSlice::title() const
{
return "Slice";
}
std::string PhysicsDemoSlice::subtitle() const
{
return "click and drag to slice up the block";
}
#endif // ifndef CC_USE_PHYSICS
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