void Bird::Contact(b2Vec2 impulse, GameItem *gameItem)
{
if(impulse.Length()>0)
{
remove=1;
travel=false;
isOut = 2;
setScore(impulse.Length());
}
else
{
isContact = false;
}
}
bool Neural_SB::accumForce(b2Vec2 & totForce, b2Vec2 force) const
{
//std::cout << "\t\tTotalForce : " << totForce.x << " " << totForce.y << std::endl;
b2Vec2 tot = totForce + force;
if( tot.LengthSquared() <= m_fMaxForce*m_fMaxForce )
{
totForce += force;
return true;
}
force.Normalize();
force *= abs(m_fMaxForce - totForce.Length());
totForce += force;
return false;
}
void LiquidFunScene::ccTouchEnded(cocos2d::CCTouch* touch,
cocos2d::CCEvent* event){
if (m_startSprite != NULL) {
const CCPoint& startSpritePosition = m_startSprite->getPosition();
const CCPoint& endSpritePosition = m_endSprite->getPosition();
// Calculate the start / end and length of the vector between them in
// world coordinates.
const b2Vec2 startPosition = ConvertScreenPositionToWorld(
b2Vec2(startSpritePosition.x, startSpritePosition.y));
const b2Vec2 endPosition = ConvertScreenPositionToWorld(
b2Vec2(endSpritePosition.x, endSpritePosition.y));
const b2Vec2 startEndVector = endPosition - startPosition;
const float32 startEndLength = startEndVector.Length();
// Calculate the middle point along the vector between startPosition and
// endPosition.
b2Vec2 midPoint;
midPoint = startEndVector;
midPoint *= 0.5f;
midPoint += startPosition;
b2PolygonShape box;
box.SetAsBox(startEndLength * 0.5f,
k_drawableBoxThickness * m_worldExtentMin);
b2BodyDef bodyDef;
bodyDef.type = b2_staticBody;
bodyDef.position = midPoint;
bodyDef.angle = atan2(startEndVector.y, startEndVector.x);
b2Body* body = m_world->CreateBody(&bodyDef);
body->CreateFixture(&box, 0);
removeChild(m_startSprite);
removeChild(m_endSprite);
// These will be cleaned up by the autorelease system since they were
// allocated by init()
m_startSprite = NULL;
m_endSprite = NULL;
}
}
void Flamethrower::onFire(b2Vec2 direction, bool constantFire, bool isPlayer)
{
direction.Normalize();
b2Mat22 matrix1 = b2Mat22(degree2radian(float(rand() % 600) / 100.0f));
b2Mat22 matrix2 = b2Mat22(degree2radian(float(rand() % 600) / 100.0f));
b2Mat22 matrix3 = b2Mat22(degree2radian(float(rand() % 600 - 300) / 100.0f));
direction = b2Mul(matrix1, direction);
b2Vec2 direction2 = b2Mul(matrix2, direction);
b2Vec2 direction3 = b2Mul(matrix3, direction);
EntityFactory *entityFactory = new FlamethrowerBulletFactory();
EntityProperties& properties = entityFactory->getDefaultProperties();
properties.x = meter2pixel(this->getBody(0)->GetPosition().x);
properties.y = meter2pixel(this->getBody(0)->GetPosition().y);
properties.special = true;
float speed = 0.7f;
FlamethrowerBullet *flamethrowerBullet = (FlamethrowerBullet*)entityFactory->create(properties);
flamethrowerBullet->getBody(0)->ApplyForce(speed * 0.75f * direction, this->getBody(0)->GetPosition());
flamethrowerBullet = (FlamethrowerBullet*)entityFactory->create(properties);
flamethrowerBullet->getBody(0)->ApplyForce(speed * 0.75f * direction2, this->getBody(0)->GetPosition());
flamethrowerBullet = (FlamethrowerBullet*)entityFactory->create(properties);
flamethrowerBullet->getBody(0)->ApplyForce(speed * 0.82f * direction3, this->getBody(0)->GetPosition());
}
// Compute allowable normal ranges based on adjacency.
// A normal n is allowable iff:
// cross(n, n1) >= 0.0f && cross(n2, n) >= 0.0f
// n points from A to B (edge to polygon)
void b2EPCollider::ComputeAdjacency()
{
b2Vec2 v0 = m_edgeA.v0;
b2Vec2 v1 = m_edgeA.v1;
b2Vec2 v2 = m_edgeA.v2;
b2Vec2 v3 = m_edgeA.v3;
// Determine allowable the normal regions based on adjacency.
// Note: it may be possible that no normal is admissable.
b2Vec2 centerB = m_proxyB.centroid;
if (m_edgeA.hasVertex0)
{
b2Vec2 e0 = v1 - v0;
b2Vec2 e1 = v2 - v1;
b2Vec2 n0(e0.y, -e0.x);
b2Vec2 n1(e1.y, -e1.x);
n0.Normalize();
n1.Normalize();
bool convex = b2Cross(n0, n1) >= 0.0f;
bool front0 = b2Dot(n0, centerB - v0) >= 0.0f;
bool front1 = b2Dot(n1, centerB - v1) >= 0.0f;
if (convex)
{
if (front0 || front1)
{
m_limit11 = n1;
m_limit12 = n0;
}
else
{
m_limit11 = -n1;
m_limit12 = -n0;
}
}
else
{
if (front0 && front1)
{
m_limit11 = n0;
m_limit12 = n1;
}
else
{
m_limit11 = -n0;
m_limit12 = -n1;
}
}
}
else
{
m_limit11.SetZero();
m_limit12.SetZero();
}
if (m_edgeA.hasVertex3)
{
b2Vec2 e1 = v2 - v1;
b2Vec2 e2 = v3 - v2;
b2Vec2 n1(e1.y, -e1.x);
b2Vec2 n2(e2.y, -e2.x);
n1.Normalize();
n2.Normalize();
bool convex = b2Cross(n1, n2) >= 0.0f;
bool front1 = b2Dot(n1, centerB - v1) >= 0.0f;
bool front2 = b2Dot(n2, centerB - v2) >= 0.0f;
if (convex)
{
if (front1 || front2)
{
m_limit21 = n2;
m_limit22 = n1;
}
else
{
m_limit21 = -n2;
m_limit22 = -n1;
}
}
else
{
if (front1 && front2)
{
m_limit21 = n1;
m_limit22 = n2;
}
else
{
m_limit21 = -n1;
m_limit22 = -n2;
}
}
}
else
{
m_limit21.SetZero();
m_limit22.SetZero();
}
}
bool GameLevelState::update(yam2d::ESContext* _context, float _deltaTime)
{
compFac->getPhysicsWorld()->Step(_deltaTime, 10, 10);
map->update(_deltaTime);
static bool ballHit = false;
static bool ballHitThisFrame;
static b2Vec2 directionVec;//Vector from player to ball when hit
ballHitThisFrame = false;
//Collisions
unsigned int numContacts = contactListener->contacts.size();
for (unsigned int i = 0; i < numContacts; i++)
{
const Contact& contact = contactListener->contacts[i];
yam2d::GameObject* A = ((PhysicsBody*) contact.fixtureA->GetBody()->GetUserData())->getGameObject();
yam2d::GameObject* B = ((PhysicsBody*) contact.fixtureB->GetBody()->GetUserData())->getGameObject();
if ((A->getName() == "Ball" && B->getName() == "Player"))
{
//Physics
if (!ballHit)
{
//Reverse last movements ( separate objects )
A->getComponent<PhysicsBody>()->getBody()->SetTransform(b2Vec2(A->getComponent<PhysicsBody>()->getBody()->GetPosition().x - ballVelocity.x, A->getComponent<PhysicsBody>()->getBody()->GetPosition().y - ballVelocity.y), A->getComponent<PhysicsBody>()->getBody()->GetAngle());
B->getComponent<PhysicsBody>()->getBody()->SetTransform(b2Vec2(B->getComponent<PhysicsBody>()->getBody()->GetPosition().x - playerSpeed.x, B->getComponent<PhysicsBody>()->getBody()->GetPosition().y - playerSpeed.y), B->getComponent<PhysicsBody>()->getBody()->GetAngle());
//Direction
directionVec = A->getComponent<PhysicsBody>()->getBody()->GetPosition() - B->getComponent<PhysicsBody>()->getBody()->GetPosition();
directionVec.Normalize();
directionVec *= 0.1f;
//Check for side hits
if (A->getComponent<PhysicsBody>()->getBody()->GetPosition().x + A->getSizeInTiles().x * 0.5f <
B->getComponent<PhysicsBody>()->getBody()->GetPosition().x - B->getSizeInTiles().x * 0.5f
||
A->getComponent<PhysicsBody>()->getBody()->GetPosition().x - A->getSizeInTiles().x * 0.5f >
B->getComponent<PhysicsBody>()->getBody()->GetPosition().x + B->getSizeInTiles().x * 0.5f)
{
ballVelocity.x = -ballVelocity.x + playerSpeed.x;
ballVelocity.y -= directionVec.y;
}
else //No side hit
{
ballVelocity.y = -ballVelocity.y;
}
ballVelocity.x -= (playerObject->getComponent<PhysicsBody>()->getBody()->GetPosition().x - ballObject->getComponent<PhysicsBody>()->getBody()->GetPosition().x) / 22.0f;
ballHit = true;
ballHitThisFrame = true;
}
}
else if ((B->getName() == "Ball" && A->getName() == "Player"))
{
//Physics
if (!ballHit)
{
//Reverse last movements ( separate objects )
B->getComponent<PhysicsBody>()->getBody()->SetTransform(b2Vec2(B->getComponent<PhysicsBody>()->getBody()->GetPosition().x - ballVelocity.x, B->getComponent<PhysicsBody>()->getBody()->GetPosition().y - ballVelocity.y), B->getComponent<PhysicsBody>()->getBody()->GetAngle());
A->getComponent<PhysicsBody>()->getBody()->SetTransform(b2Vec2(A->getComponent<PhysicsBody>()->getBody()->GetPosition().x - playerSpeed.x, A->getComponent<PhysicsBody>()->getBody()->GetPosition().y - playerSpeed.y), A->getComponent<PhysicsBody>()->getBody()->GetAngle());
//Direction
directionVec = B->getComponent<PhysicsBody>()->getBody()->GetPosition() - A->getComponent<PhysicsBody>()->getBody()->GetPosition();
directionVec.Normalize();
directionVec *= 0.1f;
//Check for side hits
if (B->getComponent<PhysicsBody>()->getBody()->GetPosition().x + B->getSizeInTiles().x * 0.5f <
A->getComponent<PhysicsBody>()->getBody()->GetPosition().x - A->getSizeInTiles().x * 0.5f
||
B->getComponent<PhysicsBody>()->getBody()->GetPosition().x - B->getSizeInTiles().x * 0.5f >
A->getComponent<PhysicsBody>()->getBody()->GetPosition().x + A->getSizeInTiles().x * 0.5f)
{
ballVelocity.x = -ballVelocity.x + playerSpeed.x;
ballVelocity.y -= directionVec.y;
}
else //No side hit
{
ballVelocity.y = -ballVelocity.y;
}
ballVelocity.x -= (playerObject->getComponent<PhysicsBody>()->getBody()->GetPosition().x - ballObject->getComponent<PhysicsBody>()->getBody()->GetPosition().x) / 22.0f;
ballHit = true;
ballHitThisFrame = true;
}
}
if ((A->getName() == "Ball" && B->getName() == "Tile"))
{
//Physics
if (!ballHit)
{
//Check for side hits
if (A->getComponent<PhysicsBody>()->getBody()->GetPosition().x + A->getSizeInTiles().x * 0.5f <
B->getComponent<PhysicsBody>()->getBody()->GetPosition().x - B->getSizeInTiles().x * 0.5
||
A->getComponent<PhysicsBody>()->getBody()->GetPosition().x - A->getSizeInTiles().x * 0.5f >
B->getComponent<PhysicsBody>()->getBody()->GetPosition().x + B->getSizeInTiles().x * 0.5)
{
ballVelocity.x = -ballVelocity.x;
}
else
{
ballVelocity.y = -ballVelocity.y;
}
ballHit = true;
ballHitThisFrame = true;
}
//Tile actions
map->deleteGameObject(B);
tileAmount--;
}
else if ((B->getName() == "Ball" && A->getName() == "Tile"))
{
//Physics
if (!ballHit)
{
//Check for side hits
if (B->getComponent<PhysicsBody>()->getBody()->GetPosition().x + B->getSizeInTiles().x * 0.5f <
A->getComponent<PhysicsBody>()->getBody()->GetPosition().x - A->getSizeInTiles().x * 0.5
||
B->getComponent<PhysicsBody>()->getBody()->GetPosition().x - B->getSizeInTiles().x * 0.5f >
A->getComponent<PhysicsBody>()->getBody()->GetPosition().x + A->getSizeInTiles().x * 0.5)
{
ballVelocity.x = -ballVelocity.x;
}
else
{
ballVelocity.y = -ballVelocity.y;
}
ballHit = true;
ballHitThisFrame = true;
}
//Tile actionss
map->deleteGameObject(A);
tileAmount--;
}
}
if (!ballHitThisFrame)
{
ballHit = false;
}
//Restrict ball
if (ballObject->getComponent<PhysicsBody>()->getBody()->GetPosition().x + ballObject->getSizeInTiles().x * 0.5f > tileSize.x
|| ballObject->getComponent<PhysicsBody>()->getBody()->GetPosition().x - ballObject->getSizeInTiles().x * 0.5f < 0.0f)
{
ballVelocity.x = -ballVelocity.x;
}
if (ballObject->getComponent<PhysicsBody>()->getBody()->GetPosition().y - ballObject->getSizeInTiles().x * 0.5f < 0.0f)
{
ballVelocity.y = -ballVelocity.y;
}
//Win-Lose
if (tileAmount == 0)
{
//Win
textObject->getComponent<yam2d::TextComponent>()->getText()->setText("YOU WIN!");
textObject->setPosition(tileSize.x * 0.5f, tileSize.y * 0.5f);
endTimer -= _deltaTime;
}
else if (ballObject->getComponent<PhysicsBody>()->getBody()->GetPosition().y > tileSize.y)
{
//Lose
textObject->getComponent<yam2d::TextComponent>()->getText()->setText("YOU LOSE!");
textObject->setPosition(tileSize.x * 0.5f, tileSize.y * 0.5f);
endTimer -= _deltaTime;
}
if (endTimer <= 0.0f)
{
stateManager->setState(new MainMenuState(stateManager));
return true;
}
//Input
if (yam2d::getKeyState(yam2d::KEY_BACK) || yam2d::getKeyState(yam2d::KEY_ESCAPE))
{
stateManager->setState(new MainMenuState(stateManager));
return true;
}
playerSpeed = yam2d::vec2(0.0f);
if (!ballHit)
{
if (yam2d::getKeyState(yam2d::KEY_D))
{
playerSpeed = yam2d::vec2(0.1f, 0.0f);
}
if (yam2d::getKeyState(yam2d::KEY_A))
{
playerSpeed = yam2d::vec2(-0.1f, 0.0f);
}
}
playerObject->getComponent<PhysicsBody>()->getBody()->SetTransform(playerObject->getPosition() + playerSpeed, 0.0f);
//Restrict
if (playerObject->getComponent<PhysicsBody>()->getBody()->GetPosition().x + playerObject->getSizeInTiles().x * 0.5f > tileSize.x)
{
playerObject->getComponent<PhysicsBody>()->getBody()->SetTransform(playerObject->getPosition() - b2Vec2(0.1f, 0.0f), 0.0f);
}
else if (playerObject->getComponent<PhysicsBody>()->getBody()->GetPosition().x - playerObject->getSizeInTiles().x * 0.5f < 0.0f)
{
playerObject->getComponent<PhysicsBody>()->getBody()->SetTransform(playerObject->getPosition() + b2Vec2(0.1f, 0.0f), 0.0f);
}
//
ballObject->getComponent<PhysicsBody>()->getBody()->SetTransform(ballObject->getPosition() + (ballVelocity), 0.0f);
if (endTimer >= 3.0f)
{
textObject->getComponent<yam2d::TextComponent>()->getText()->setText("Tiles Left: " + std::to_string(tileAmount));
}
return true;
}
float RadiansOf(b2Vec2 vec) {
static b2Vec2 vertical(0, -1);
float dot = (vertical.x * vec.x) + (vertical.y * vec.y);
float angle_r = acos(dot / (vertical.Length() * vec.Length()));
return angle_r;
}
//Chase firing
bool Enemy::chaseFire(b2Vec2 & rFireV)
{
bool trigger = false;
//Did we fire?
if (fired_)
{
angry_ = fmaxf(angry_ - triggerSatisfaction_[brainStem_.weapon_training], 0);
fired_ = false;
}
//Fire at player?
if (play_)
{
b2Vec2 myPos = getPosition();
b2Vec2 pPos = player_->getPosition();
b2Vec2 between = (pPos - myPos);
float dist = between.Length();
//Fire if in visible range and
if (dist < visRange_[brainStem_.sensitivity] && chill_ > freezingPoint_)
{
rFireV = LJP(pPos, 100, 0, 2.0, 0); //*//Fire LJP const?
}
}
//DECIDE TO FIRE
float seePlayer = rFireV.Length();
float ammo = (float)getWeaponBar() / (float)getWeaponBarMAX();
//Otherwise, heat up, chill first
if (seePlayer != 0)
{
orient(rFireV);
if (chill_ != 0) chill_ = fminf(chill_ += seePlayer * 4 * moodMult_[brainStem_.aggression], 0);
else angry_ = fminf(angry_ + seePlayer * moodMult_[brainStem_.aggression], angryMAX_);
}
//If we're mad enough and we can see the player, fire
if (angry_ > boilingPoint_ && seePlayer != 0)
{
trigger = true;
}
//Reload if we're cool enough
if (angry_ - boilingPoint_ > (angryMAX_ - boilingPoint_) * accuracy_[brainStem_.weapon_training] * moodMult_[brainStem_.aggression]) //*//weapon training, aggression
{
if (ammo < accuracy_[brainStem_.weapon_training]) //*// weapon training causes later reloads
reup();
}
//Chill out when idle
if (angry_ == 0 && seePlayer == 0)
{
chill_ -= 1 * moodMult_[brainStem_.inner_peace];
if (chill_ <= freezingPoint_)
{
if (ammo < 1.f)
reup();
spin(-0.05f);
}
}
chill_ = fmax(chill_, chillMIN_);
return trigger;
}
// Algorithm:
// 1. Classify v1 and v2
// 2. Classify polygon centroid as front or back
// 3. Flip normal if necessary
// 4. Initialize normal range to [-pi, pi] about face normal
// 5. Adjust normal range according to adjacent edges
// 6. Visit each separating axes, only accept axes within the range
// 7. Return if _any_ axis indicates separation
// 8. Clip
void b2EPCollider::Collide(b2Manifold* manifold, const b2EdgeShape* edgeA, const b2Transform& xfA,
const b2PolygonShape* polygonB, const b2Transform& xfB)
{
m_xf = b2MulT(xfA, xfB);
m_centroidB = b2Mul(m_xf, polygonB->m_centroid);
m_v0 = edgeA->m_vertex0;
m_v1 = edgeA->m_vertex1;
m_v2 = edgeA->m_vertex2;
m_v3 = edgeA->m_vertex3;
bool hasVertex0 = edgeA->m_hasVertex0;
bool hasVertex3 = edgeA->m_hasVertex3;
b2Vec2 edge1 = m_v2 - m_v1;
edge1.Normalize();
m_normal1.Set(edge1.y, -edge1.x);
float32 offset1 = b2Dot(m_normal1, m_centroidB - m_v1);
float32 offset0 = 0.0f, offset2 = 0.0f;
bool convex1 = false, convex2 = false;
// Is there a preceding edge?
if (hasVertex0)
{
b2Vec2 edge0 = m_v1 - m_v0;
edge0.Normalize();
m_normal0.Set(edge0.y, -edge0.x);
convex1 = b2Cross(edge0, edge1) >= 0.0f;
offset0 = b2Dot(m_normal0, m_centroidB - m_v0);
}
// Is there a following edge?
if (hasVertex3)
{
b2Vec2 edge2 = m_v3 - m_v2;
edge2.Normalize();
m_normal2.Set(edge2.y, -edge2.x);
convex2 = b2Cross(edge1, edge2) > 0.0f;
offset2 = b2Dot(m_normal2, m_centroidB - m_v2);
}
// Determine front or back collision. Determine collision normal limits.
if (hasVertex0 && hasVertex3)
{
if (convex1 && convex2)
{
m_front = offset0 >= 0.0f || offset1 >= 0.0f || offset2 >= 0.0f;
if (m_front)
{
m_normal = m_normal1;
m_lowerLimit = m_normal0;
m_upperLimit = m_normal2;
}
else
{
m_normal = -m_normal1;
m_lowerLimit = -m_normal1;
m_upperLimit = -m_normal1;
}
}
else if (convex1)
{
m_front = offset0 >= 0.0f || (offset1 >= 0.0f && offset2 >= 0.0f);
if (m_front)
{
m_normal = m_normal1;
m_lowerLimit = m_normal0;
m_upperLimit = m_normal1;
}
else
{
m_normal = -m_normal1;
m_lowerLimit = -m_normal2;
m_upperLimit = -m_normal1;
}
}
else if (convex2)
{
m_front = offset2 >= 0.0f || (offset0 >= 0.0f && offset1 >= 0.0f);
if (m_front)
{
m_normal = m_normal1;
m_lowerLimit = m_normal1;
m_upperLimit = m_normal2;
}
else
{
m_normal = -m_normal1;
m_lowerLimit = -m_normal1;
m_upperLimit = -m_normal0;
}
}
else
{
m_front = offset0 >= 0.0f && offset1 >= 0.0f && offset2 >= 0.0f;
if (m_front)
{
m_normal = m_normal1;
m_lowerLimit = m_normal1;
m_upperLimit = m_normal1;
}
else
{
m_normal = -m_normal1;
m_lowerLimit = -m_normal2;
m_upperLimit = -m_normal0;
}
}
}
else if (hasVertex0)
{
if (convex1)
{
m_front = offset0 >= 0.0f || offset1 >= 0.0f;
if (m_front)
{
m_normal = m_normal1;
m_lowerLimit = m_normal0;
m_upperLimit = -m_normal1;
}
else
{
m_normal = -m_normal1;
m_lowerLimit = m_normal1;
m_upperLimit = -m_normal1;
}
}
else
{
m_front = offset0 >= 0.0f && offset1 >= 0.0f;
if (m_front)
{
m_normal = m_normal1;
m_lowerLimit = m_normal1;
m_upperLimit = -m_normal1;
}
else
{
m_normal = -m_normal1;
m_lowerLimit = m_normal1;
m_upperLimit = -m_normal0;
}
}
}
else if (hasVertex3)
{
if (convex2)
{
m_front = offset1 >= 0.0f || offset2 >= 0.0f;
if (m_front)
{
m_normal = m_normal1;
m_lowerLimit = -m_normal1;
m_upperLimit = m_normal2;
}
else
{
m_normal = -m_normal1;
m_lowerLimit = -m_normal1;
m_upperLimit = m_normal1;
}
}
else
{
m_front = offset1 >= 0.0f && offset2 >= 0.0f;
if (m_front)
{
m_normal = m_normal1;
m_lowerLimit = -m_normal1;
m_upperLimit = m_normal1;
}
else
{
m_normal = -m_normal1;
m_lowerLimit = -m_normal2;
m_upperLimit = m_normal1;
}
}
}
else
{
m_front = offset1 >= 0.0f;
if (m_front)
{
m_normal = m_normal1;
m_lowerLimit = -m_normal1;
m_upperLimit = -m_normal1;
}
else
{
m_normal = -m_normal1;
m_lowerLimit = m_normal1;
m_upperLimit = m_normal1;
}
}
// Get polygonB in frameA
m_polygonB.count = polygonB->m_vertexCount;
for (int32 i = 0; i < polygonB->m_vertexCount; ++i)
{
m_polygonB.vertices[i] = b2Mul(m_xf, polygonB->m_vertices[i]);
m_polygonB.normals[i] = b2Mul(m_xf.q, polygonB->m_normals[i]);
}
m_radius = 2.0f * b2_polygonRadius;
manifold->pointCount = 0;
b2EPAxis edgeAxis = ComputeEdgeSeparation();
// If no valid normal can be found than this edge should not collide.
if (edgeAxis.type == b2EPAxis::e_unknown)
{
return;
}
if (edgeAxis.separation > m_radius)
{
return;
}
b2EPAxis polygonAxis = ComputePolygonSeparation();
if (polygonAxis.type != b2EPAxis::e_unknown && polygonAxis.separation > m_radius)
{
return;
}
// Use hysteresis for jitter reduction.
const float32 k_relativeTol = 0.98f;
const float32 k_absoluteTol = 0.001f;
b2EPAxis primaryAxis;
if (polygonAxis.type == b2EPAxis::e_unknown)
{
primaryAxis = edgeAxis;
}
else if (polygonAxis.separation > k_relativeTol * edgeAxis.separation + k_absoluteTol)
{
primaryAxis = polygonAxis;
}
else
{
primaryAxis = edgeAxis;
}
b2ClipVertex ie[2];
b2ReferenceFace rf;
if (primaryAxis.type == b2EPAxis::e_edgeA)
{
manifold->type = b2Manifold::e_faceA;
// Search for the polygon normal that is most anti-parallel to the edge normal.
int32 bestIndex = 0;
float32 bestValue = b2Dot(m_normal, m_polygonB.normals[0]);
for (int32 i = 1; i < m_polygonB.count; ++i)
{
float32 value = b2Dot(m_normal, m_polygonB.normals[i]);
if (value < bestValue)
{
bestValue = value;
bestIndex = i;
}
}
int32 i1 = bestIndex;
int32 i2 = i1 + 1 < m_polygonB.count ? i1 + 1 : 0;
ie[0].v = m_polygonB.vertices[i1];
ie[0].id.cf.indexA = 0;
ie[0].id.cf.indexB = i1;
ie[0].id.cf.typeA = b2ContactFeature::e_face;
ie[0].id.cf.typeB = b2ContactFeature::e_vertex;
ie[1].v = m_polygonB.vertices[i2];
ie[1].id.cf.indexA = 0;
ie[1].id.cf.indexB = i2;
ie[1].id.cf.typeA = b2ContactFeature::e_face;
ie[1].id.cf.typeB = b2ContactFeature::e_vertex;
if (m_front)
{
rf.i1 = 0;
rf.i2 = 1;
rf.v1 = m_v1;
rf.v2 = m_v2;
rf.normal = m_normal1;
}
else
{
rf.i1 = 1;
rf.i2 = 0;
rf.v1 = m_v2;
rf.v2 = m_v1;
rf.normal = -m_normal1;
}
}
else
{
manifold->type = b2Manifold::e_faceB;
ie[0].v = m_v1;
ie[0].id.cf.indexA = 0;
ie[0].id.cf.indexB = primaryAxis.index;
ie[0].id.cf.typeA = b2ContactFeature::e_vertex;
ie[0].id.cf.typeB = b2ContactFeature::e_face;
ie[1].v = m_v2;
ie[1].id.cf.indexA = 0;
ie[1].id.cf.indexB = primaryAxis.index;
ie[1].id.cf.typeA = b2ContactFeature::e_vertex;
ie[1].id.cf.typeB = b2ContactFeature::e_face;
rf.i1 = primaryAxis.index;
rf.i2 = rf.i1 + 1 < m_polygonB.count ? rf.i1 + 1 : 0;
rf.v1 = m_polygonB.vertices[rf.i1];
rf.v2 = m_polygonB.vertices[rf.i2];
rf.normal = m_polygonB.normals[rf.i1];
}
rf.sideNormal1.Set(rf.normal.y, -rf.normal.x);
rf.sideNormal2 = -rf.sideNormal1;
rf.sideOffset1 = b2Dot(rf.sideNormal1, rf.v1);
rf.sideOffset2 = b2Dot(rf.sideNormal2, rf.v2);
// Clip incident edge against extruded edge1 side edges.
b2ClipVertex clipPoints1[2];
b2ClipVertex clipPoints2[2];
int32 np;
// Clip to box side 1
np = b2ClipSegmentToLine(clipPoints1, ie, rf.sideNormal1, rf.sideOffset1, rf.i1);
if (np < b2_maxManifoldPoints)
{
return;
}
// Clip to negative box side 1
np = b2ClipSegmentToLine(clipPoints2, clipPoints1, rf.sideNormal2, rf.sideOffset2, rf.i2);
if (np < b2_maxManifoldPoints)
{
return;
}
// Now clipPoints2 contains the clipped points.
if (primaryAxis.type == b2EPAxis::e_edgeA)
{
manifold->localNormal = rf.normal;
manifold->localPoint = rf.v1;
}
else
{
manifold->localNormal = polygonB->m_normals[rf.i1];
manifold->localPoint = polygonB->m_vertices[rf.i1];
}
int32 pointCount = 0;
for (int32 i = 0; i < b2_maxManifoldPoints; ++i)
{
float32 separation;
separation = b2Dot(rf.normal, clipPoints2[i].v - rf.v1);
if (separation <= m_radius)
{
b2ManifoldPoint* cp = manifold->points + pointCount;
if (primaryAxis.type == b2EPAxis::e_edgeA)
{
cp->localPoint = b2MulT(m_xf, clipPoints2[i].v);
cp->id = clipPoints2[i].id;
}
else
{
cp->localPoint = clipPoints2[i].v;
cp->id.cf.typeA = clipPoints2[i].id.cf.typeB;
cp->id.cf.typeB = clipPoints2[i].id.cf.typeA;
cp->id.cf.indexA = clipPoints2[i].id.cf.indexB;
cp->id.cf.indexB = clipPoints2[i].id.cf.indexA;
}
++pointCount;
}
}
manifold->pointCount = pointCount;
}
void set_length(float l)
{
length = l;
self.Set(l * std::cos(angle), -l * std::sin(angle));
}
void Init()
{
GameWin.create(sf::VideoMode(800, 600, 32), "Physics Test - [SFML & Box2D]");
if (!font.loadFromFile("arial.ttf"))
{
exit(0);
}
PauseText.setFont(font);
pauseText = to_string(Paused);
PauseText.setCharacterSize(10);
PauseText.setString("PAUSED:" + pauseText);
PauseText.setPosition(sf::Vector2f(700, 10));
PauseText.setFillColor(sf::Color::Yellow);
box.setPosition(sf::Vector2f(15, 5));
box.setSize(sf::Vector2f(10, 10));
box.setFillColor(sf::Color(255, 0, 0));
box2.setPosition(sf::Vector2f(50, 5));
box2.setSize(sf::Vector2f(15, 15));
box2.setFillColor(sf::Color(0, 255, 0));
ground.setPosition(sf::Vector2f(0, 540));
ground.setSize(sf::Vector2f(800, 560));
ground.setFillColor(sf::Color(0, 0,255));
wall.setPosition(sf::Vector2f(1, 1));
wall.setSize(sf::Vector2f(10, 580));
wall.setFillColor(sf::Color(0, 0, 255));
wall2.setPosition(sf::Vector2f(790, 1));
wall2.setSize(sf::Vector2f(10, 580));
wall2.setFillColor(sf::Color(0, 0, 255));
World = new b2World(gravity);
World->SetGravity(gravity);
groundBodyDef.type = b2_staticBody;
groundBodyDef.position.Set(0, 540);
groundBody = World->CreateBody(&groundBodyDef);
wallBodyDef.type = b2_staticBody;
wallBodyDef.position.Set(10, 580);
wallBody = World->CreateBody(&wallBodyDef);
wallBodyDef2.type = b2_staticBody;
wallBodyDef2.position.Set(790, 1);
wallBody2 = World->CreateBody(&wallBodyDef2);
ballBodyDef.type = b2_dynamicBody;
ballVector.Set(10, 10);
ballBodyDef.angularVelocity = 0.0f;
ballBodyDef.linearVelocity = ballVector;
ballBodyDef2.type = b2_dynamicBody;
ballVector2.Set(15, 15);
ballBodyDef2.angularVelocity = 0.0f;
ballBodyDef2.linearVelocity = ballVector2;
ballBodyDef.position.Set(15, 0);
ballBodyDef.awake = true;
Body = World->CreateBody(&ballBodyDef);
ballBodyDef2.position.Set(30, 0);
ballBodyDef2.awake = true;
Body2 = World->CreateBody(&ballBodyDef2);
boxShapeDef.shape = &groundBox;
boxShapeDef.density = 2.0f;
boxShapeDef.restitution = 0.5f;
groundBox.SetAsBox(800, 0);
groundBody->CreateFixture(&groundBox, 0);
wallBoxDef.shape = &wallBox;
wallBoxDef.density = 2.0f;
wallBoxDef.restitution = 0.5f;
wallBox.SetAsBox(1, 600);
wallBody->CreateFixture(&wallBox, 0);
wallBoxDef2.shape = &wallBox2;
wallBoxDef2.density = 2.0f;
wallBoxDef2.restitution = 0.5f;
wallBox2.SetAsBox(1, 600);
wallBody2->CreateFixture(&wallBox2, 0);
dynamicBox.SetAsBox(10.0f, 10.0f);
dynamicBox2.SetAsBox(10.0f, 10.0f);
fixtureDef.shape = &dynamicBox;
fixtureDef.density = 2.0f;
fixtureDef.friction = 1.5f;
fixtureDef.restitution = 0.9f;
Body->CreateFixture(&fixtureDef);
fixtureDef2.shape = &dynamicBox2;
fixtureDef2.density = 5.0f;
fixtureDef2.friction = 5.0f;
fixtureDef2.restitution = 1.0f;
Body2->CreateFixture(&fixtureDef2);
timeStep = 1.0f / 600.0f;
velIter = 1;
posIter = 1;
World->Step(timeStep, velIter, posIter);
b2Vec2 pos = Body->GetPosition();
float angle = Body->GetAngle();
box.setPosition(pos.x, pos.y);
box.setRotation(angle);
b2Vec2 pos2 = Body2->GetPosition();
float angle2 = Body2->GetAngle();
box2.setPosition(pos2.x, pos2.y);
box2.setRotation(angle2);
}
float sumMagnitude(sf::Vector2f& V1, b2Vec2& V2)
{
return sqrtf(V1.x*V1.x + V1.y*V1.y) + V2.Length();
}
float sumMagnitude(b2Vec2& V1, sf::Vector2f& V2)
{
return V1.Length() + sqrtf(V2.x * V2.x + V2.y * V2.y);
}
float sumMagnitude(const b2Vec2& V1, const b2Vec2& V2)
{
return V1.Length() + V2.Length();
}
