/**\brief Constructor
*/
Projectile::Projectile(float damageBooster, float angleToFire, Coordinate worldPosition, Coordinate firedMomentum, Weapon* _weapon)
{
damageBoost=damageBooster;
// All Projectiles get these
ownerID = 0;
targetID = 0;
start = Timer::GetTicks();
SetRadarColor (Color(0x55,0x55,0x55));
// These are based off of the Ship firing this projectile
SetWorldPosition( worldPosition );
SetAngle(angleToFire);
// These are based off of the Weapon
weapon = _weapon;
secondsOfLife = weapon->GetLifetime();
SetImage(weapon->GetImage());
Trig *trig = Trig::Instance();
Coordinate momentum = GetMomentum();
float angle = static_cast<float>(trig->DegToRad( angleToFire ));
momentum = firedMomentum +
Coordinate( trig->GetCos( angle ) * weapon->GetVelocity(),
-trig->GetSin( angle ) * weapon->GetVelocity() );
SetMomentum( momentum );
}
/**\brief Update the Projectile
*
* Projectiles do all the normal Sprite things like moving.
* Projectiles check for collisions with nearby Ships, and if they collide,
* they deal damage to that ship. Note that since each projectile knows which ship fired it and will never collide with them.
*
* Projectiles have a life time limit (in milli-seconds). Each tick they need
* to check if they've lived to long and need to disappear.
*
* Projectiles have the ability to track down a specific target. This only
* means that they will turn slightly to head towards their target.
*/
void Projectile::Update( void ) {
Sprite::Update(); // update momentum and other generic sprite attributes
SpriteManager *sprites = SpriteManager::Instance();
// Check for projectile collisions
Sprite* impact = sprites->GetNearestSprite( (Sprite*)this, 100,DRAW_ORDER_SHIP|DRAW_ORDER_PLAYER );
if( (impact != NULL) && (impact->GetID() != ownerID) && ((this->GetWorldPosition() - impact->GetWorldPosition()).GetMagnitude() < impact->GetRadarSize() )) {
((Ship*)impact)->Damage( (weapon->GetPayload())*damageBoost );
sprites->Delete( (Sprite*)this );
// Create a fire burst where this projectile hit the ship's shields.
// TODO: This shows how much we need to improve our collision detection.
Effect* hit = new Effect(this->GetWorldPosition(), "Resources/Animations/shield.ani", 0);
hit->SetAngle( -this->GetAngle() );
hit->SetMomentum( impact->GetMomentum() );
sprites->Add( hit );
}
// Expire the projectile after a time period
if (( Timer::GetTicks() > secondsOfLife + start )) {
sprites->Delete( (Sprite*)this );
}
// Track the target
Sprite* target = sprites->GetSpriteByID( targetID );
float tracking = weapon->GetTracking();
if( target != NULL && tracking > 0.00000001f ) {
float angleTowards = normalizeAngle( ( target->GetWorldPosition() - this->GetWorldPosition() ).GetAngle() - GetAngle() );
SetMomentum( GetMomentum().RotateBy( angleTowards*tracking ) );
SetAngle( GetMomentum().GetAngle() );
}
}
RigidBody::RigidBody(Rect rect)
{
float width = (rect.right - rect.left);
float height = (rect.bottom - rect.top);
// Create a Rectangle shape - origin middle
mShape = new Shape();
mShape->setOrigin(Vector(rect.left + width/2, rect.top + height/2, 0));
mShape->addPoint(Vector(-width/2, -height/2, 0)); // top - left
mShape->addPoint(Vector(-width/2, height/2, 0)); // bottom - left
mShape->addPoint(Vector(width/2, height/2, 0)); // bottom - right
mShape->addPoint(Vector(width/2, -height/2, 0)); // top - right
setStatic(false);
mAlive = true;
mTexture = NULL;
SetMass(1);
SetVelocity(0, 0);
SetAngularVelocity(0.0f);
SetForce(Vector(0, 0, 0));
SetTorque(Vector(0, 0, 0));
SetMomentum(Vector(0, 0, 0));
SetFriction(1.0f);
SetSleeping(false);
}
/**\brief set name of last planet visited
*/
void Player::Land( lua_State *L, Planet* planet ){
assert( planet );
if( planet->GetLandable() == false
|| planet->GetForbidden() == true ) {
return;
}
LogMsg(INFO, "Landed on %s", planet->GetName().c_str() );
Lua::Call( "landingDialog", "i", planet->GetID() );
// Stay on the Planet
SetMomentum( Coordinate(0,0) );
// Run Land function for each Mission
bool missionOver;
list<Mission*>::iterator i = missions.begin();
while( i != missions.end() )
{
missionOver = (*i)->Land();
if( missionOver ) {
LogMsg(INFO, "Completed the Mission '%s'", (*i)->GetName().c_str() );
// Remove this completed mission from the list
i = missions.erase( i );
} else {
++i;
}
}
lastPlanet = planet->GetName();
Save( Simulation_Lua::GetSimulation(L)->GetName() );
//AdvanceFromLand
}
/**\brief Adds damage to hull.
*/
void Ship::Damage(short int damage) {
if(status.shieldDamage >= ((float)shipStats.GetShieldStrength()) * shieldBooster)
status.hullDamage += damage;
else
status.shieldDamage += damage;
if( GetHullIntegrityPct() < .15 ) {
status.isDisabled = true;
SetMomentum( GetMomentum() * .75 );
}
}
RigidBody::RigidBody(float x, float y, int width, int height)
{
// Create a Rectangle shape - origin middle
mShape = new Shape();
mShape->setOrigin(Vector(x, y, 0));
mShape->addPoint(Vector(-width/2, -height/2, 0)); // top - left
mShape->addPoint(Vector(-width/2, height/2, 0)); // bottom - left
mShape->addPoint(Vector(width/2, height/2, 0)); // bottom - right
mShape->addPoint(Vector(width/2, -height/2, 0)); // top - right
setStatic(false);
mAlive = true;
SetMass(1);
SetVelocity(0, 0);
SetAngularVelocity(0.0f);
SetForce(Vector(0, 0, 0));
SetTorque(Vector(0, 0, 0));
SetMomentum(Vector(0, 0, 0));
SetFriction(1.0f);
SetSleeping(false);
SetRepeatX(false);
}
/**\brief Accelerates the ship.
* \sa Model::GetAcceleration
*/
void Ship::Accelerate( void ) {
Trig *trig = Trig::Instance();
Coordinate momentum = GetMomentum();
float angle = static_cast<float>(trig->DegToRad( GetAngle() ));
float speed = shipStats.GetMaxSpeed()*engineBooster;
float acceleration = (shipStats.GetForceOutput() *engineBooster ) / shipStats.GetMass();
momentum += Coordinate( trig->GetCos( angle ) * acceleration * Timer::GetDelta(),
-1 * trig->GetSin( angle ) * acceleration * Timer::GetDelta() );
momentum.EnforceMagnitude(speed);
SetMomentum( momentum );
status.isAccelerating = true;
// Play engine sound
float engvol = OPTION(float,"options/sound/engines");
Coordinate offset = GetWorldPosition() - Camera::Instance()->GetFocusCoordinate();
if ( this->GetDrawOrder() == DRAW_ORDER_SHIP )
engvol = engvol * NON_PLAYER_SOUND_RATIO ;
this->engine->GetSound()->SetVolume( engvol );
this->engine->GetSound()->PlayNoRestart( offset );
}