toxi::geom::Vec2D toxi::geom::Polygon2D::getCentroid()
{
Vec2D res = Vec2D();
for (int i = 0, num = vertices.size(); i < num; i++)
{
Vec2D a = vertices.at(i);
Vec2D b = vertices.at( ( i + 1 ) % num );
double crossP = a.getX() * b.getY() - b.getX() * a.getY();
res.set( res.getX() + (a.getX() + b.getX()) * crossP, res.getY() + (a.getY() + b.getY()) * crossP );
}
return res.scale(1 / (6 * getArea()));
}
Debris::Debris(Ship* s, Player* p, Vec2D location, Vec2D direction, bool collides, bool draw) : ParticleEffect(0, p, none, location, direction, NULL, collides, draw)
{
this->mesh = this;
shipFinalDir = s->dir;
Vec2D rotationpoint;
Vec2D midpoint;
Mesh* m = (Mesh*)(s->mesh);
Mesh* meshpart = NULL;
for(unsigned int i = 0; i < m->polyNum; ++i)
{
for(unsigned int p = 0; p < m->polys[i].length - 1; ++p)
{
meshpart = new Mesh();
meshpart->polyNum = 1;
meshpart->mountNum = 0;
meshpart->polys = new sf2::Polygon[1];
meshpart->polys[0].length = 2;
meshpart->polys[0].vertices = new sf2::CUSTOMVERTEX[2];
meshpart->polys[0].vertices[0] = m->polys[i].vertices[p];
meshpart->polys[0].vertices[1] = m->polys[i].vertices[p+1];
midpoint = Vec2D(meshpart->polys[0].vertices[1].X + meshpart->polys[0].vertices[0].X, meshpart->polys[0].vertices[1].Y + meshpart->polys[0].vertices[0].Y)/2.0f;
meshpart->radius = Distance(Vec2D(meshpart->polys[0].vertices[0].X, meshpart->polys[0].vertices[0].Y), Vec2D(meshpart->polys[0].vertices[1].X, meshpart->polys[0].vertices[1].Y)) / 2.0f;
Vec2D addedVel = 3.0f/midpoint; //difference between midpoint and ship's midpoint
addedVel.scale(meshpart->radius); //scale by size of part
//rotationpoint
Vec2D start(m->polys[i].vertices[p]);
Vec2D end = Vec2D(m->polys[i].vertices[p+1]);
rotationpoint = start - end;
rotationpoint.scale(randomFloat(0.0f, 1.0f));
rotationpoint += end;
float limit = 3.14159f * 2 / meshpart->radius;
float rotationspeed = randomFloat(-limit, limit);
LoadToVRAM(meshpart);
parts.insert(parts.end(), new DebrisPart(meshpart, randomFloat(1.0f, 5.0f), s->loc, s->vel + addedVel, rotationpoint, midpoint, rotationspeed));
}
}
}
Vec2D Segment::intersectionPoint(Segment const& other) const
{
Vec2D selfDelta = delta();
Vec2D otherDelta = other.delta();
if(selfDelta.cross(otherDelta) != 0)
{
float t = other.a.subtract(a).cross(otherDelta) / selfDelta.cross(otherDelta);
float u = other.a.subtract(a).cross(selfDelta) / selfDelta.cross(otherDelta);
if(t >= 0 && t <= 1 && u >= 0 && u <= 1)
{
return a.add(selfDelta.scale(t));
}
}
return Vec2D(0, 0);
}
void Ship::run(float deltaTime)
{
if(Distance(this->loc, Vec2D()) > getGame()->arena->radius && GetTickCount()%100 == 0)
{
Vec2D projection = loc;
projection.scale(1.5f);
getGame()->insertObject(new hostileDrone(getGame()->getNextIndex(), NULL, _hostileDrone, projection, Vec2D(0.0f, 1.0f), this));
}
InputData* id = &getGame()->inputdata;
//special abilitiy timers
if(abilityTimer > 0.0f)
{
abilityTimer -= deltaTime;
if(abilityTimer <= 0.0f && EndSpecialAbility != NULL) //ability just ended its time
EndSpecialAbility(this);
}
else if(abilityCooldownTimer > 0.0f)
abilityCooldownTimer -= deltaTime;
if(hitpoints <= 0)
{
getGame()->debug.AddEvent("Ship died");
die();
//explosion
getGame()->insertObject(new ShipExplosion(getGame()->getNextIndex(), this->loc, (int)this->mesh->radius));
//debris
getGame()->insertObject(new Debris(this, this->owner, this->loc, this->dir, false, true));
}
if(this->owner == getGame()->pc)
{
if(!dead)
{
if(id->up.downState || id->w.downState)
{
if(SpecialAbility == &Cloak && abilityTimer > 0.0f)
thrusting = false;
else
thrusting = true; //for turning on thruster particle effects
thrust(deltaTime);
}
else
{
thrusting = false;
acc.zero(); // resec accel to 0
}
if(id->down.downState || id->s.downState || id->r.downState)
slow(deltaTime);
if(id->left.downState || id->a.downState)
turnLeft(deltaTime);
if(id->right.downState || id->d.downState)
turnRight(deltaTime);
if(id->enter.hitEvent)
{
if(abilityCooldownTimer <= 0.0f && SpecialAbility != NULL)
SpecialAbility(this);
else if(SpecialAbility == NULL)
getGame()->messages.addMessage("No special ability for this ship!");
else
{
if(abilityTimer > 0.0f)
getGame()->messages.addMessage("Special ability is running!");
else
getGame()->messages.addMessage("Special ability is cooling down!");
}
id->enter.ResetEvent();
}
}
}
vel += acc;
if(abilityTimer > 0.0f) //special ability is active
vel.limit(abilityVelLimit);
else
vel.limit(maxSpeed);
//if(this->owner == getGame()->pc)
//{
// if(id->h.downState) //devhax
// {
// vel.zero();
// }
//}
loc += vel * deltaTime;
bb->Update(loc.x - mesh->radius, loc.y + mesh->radius);
if(targetObj)
target = targetObj->loc;
if(this->owner == getGame()->pc)
{
if ((id->space.downState || id->mouse.left.downState) && weapon)
weapon->shoot();
if(id->y.downState)
targetObj = NULL;
if(!targetObj && getGame()->cursortarget)
target = getGame()->cursortarget->loc;
}
}
void Ship::update(float const delta)
{
if(gameWorld->getPaused())
return;
if(dead)
return;
if(turningLeft) glhckObjectRotatef(o, 0, 0, delta * 120);
if(turningRight) glhckObjectRotatef(o, 0, 0, delta * -120);
if(accelerating)
{
kmScalar angle = glhckObjectGetRotation(o)->z;
Vec2D acceleration(0, 120 * delta);
acceleration.rotatei(angle / 360);
v += acceleration;
}
if(v.lengthSquared() > MAX_SPEED * MAX_SPEED)
{
v.uniti().scalei(MAX_SPEED);
}
ActionType at = DEFAULT;
if(accelerating) {
at = turningLeft && !turningRight ? LEFT_ACCELERATING :
turningRight && !turningLeft ? RIGHT_ACCELERATING :
ACCELERATING;
} else {
at = turningLeft && !turningRight ? LEFT :
turningRight && !turningLeft ? RIGHT :
DEFAULT;
}
WeaponType wt;
if(weapon->getWeaponId() == LaserWeapon::ID)
wt = RAPID;
else if(weapon->getWeaponId() == SpreadWeapon::ID)
wt = SPREAD;
else if(weapon->getWeaponId() == BeamWeapon::ID)
wt = BEAM;
else
wt = PLASMA;
ImageType it = static_cast<ImageType>(wt * NUM_ACTIONS + at);
glhckMaterialTextureTransform(glhckObjectGetMaterial(o), &atlas.getTransform(it).transform, atlas.getTransform(it).degree);
glhckObjectMovef(o, v.x * delta, v.y * delta, 0);
// FIXME: Do proper wrapping
kmVec3 const* pos = glhckObjectGetPosition(o);
if(pos->x < -400) {
glhckObjectMovef(o, 800, 0, 0);
} else if(pos->x > 400) {
glhckObjectMovef(o, -800, 0, 0);
}
if(pos->y < -240) {
glhckObjectMovef(o, 0, 480, 0);
} else if(pos->y > 240) {
glhckObjectMovef(o, 0, -480, 0);
}
shape.center = getPosition();
for(Weapon* weapon : weapons)
{
weapon->update(delta);
}
if(shooting)
{
Vec2D direction = Vec2D(0, 1).rotatei(glhckObjectGetRotation(o)->z / 360);
weapon->shoot(getPosition() + direction.scale(RADIUS), direction);
}
glhckObjectPosition(shield, glhckObjectGetPosition(o));
if(immortalityLeft > 0)
{
immortalityLeft -= delta;
}
}