static duk_ret_t RigidBody_GetLinearVelocity(duk_context* ctx)
{
RigidBody* thisObj = GetThisWeakObject<RigidBody>(ctx);
float3 ret = thisObj->GetLinearVelocity();
PushValueObjectCopy<float3>(ctx, ret, float3_ID, float3_Finalizer);
return 1;
}
void SnowBall::ObjectCollision(GameObject* otherObject, VariantMap& eventData)
{
if (hitDamage > 0)
{
RigidBody* body = node_->GetComponent<RigidBody>();
float l = body->GetLinearVelocity().Length();
if ((body->GetLinearVelocity().Length() >= snowballMinHitSpeed))
{
if (side != otherObject->GetSide())
{
otherObject->Damage(this, hitDamage);
// Create a temporary node for the hit sound
SpawnSound(node_, node_->GetPosition(), "Sounds/PlayerFistHit.wav", 0.2);
}
hitDamage = 0;
}
}
if (duration > snowballObjectHitDuration)
duration = snowballObjectHitDuration;
}
void SnowBall::FixedUpdate(float timeStep)
{
// Apply damping when rolling on the ground, or near disappearing
RigidBody* body = node_->GetComponent<RigidBody>();
if ((onGround) || (duration < snowballGroundHitDuration))
{
Vector3 vel = body->GetLinearVelocity();
body->ApplyForce(Vector3(-snowballDampingForce * vel.x_, 0, -snowballDampingForce * vel.z_));
}
// Disappear when duration expired
if (duration >= 0)
{
duration -= timeStep;
if (duration <= 0)
{
SpawnParticleEffect(node_, node_->GetPosition(), "Particle/SnowExplosion.xml", 1);
node_->Remove();
}
}
}
void Character::FixedUpdate(float timeStep)
{
/// \todo Could cache the components for faster access instead of finding them each frame
RigidBody* body = GetComponent<RigidBody>();
AnimationController* animCtrl = GetComponent<AnimationController>();
// Update the in air timer. Reset if grounded
if (!onGround_)
inAirTimer_ += timeStep;
else
inAirTimer_ = 0.0f;
// When character has been in air less than 1/10 second, it's still interpreted as being on ground
bool softGrounded = inAirTimer_ < INAIR_THRESHOLD_TIME;
// Update movement & animation
const Quaternion& rot = node_->GetRotation();
Vector3 moveDir = Vector3::ZERO;
const Vector3& velocity = body->GetLinearVelocity();
// Velocity on the XZ plane
Vector3 planeVelocity(velocity.x_, 0.0f, velocity.z_);
if (controls_.IsDown(CTRL_FORWARD))
moveDir += Vector3::FORWARD;
if (controls_.IsDown(CTRL_BACK))
moveDir += Vector3::BACK;
if (controls_.IsDown(CTRL_LEFT))
moveDir += Vector3::LEFT;
if (controls_.IsDown(CTRL_RIGHT))
moveDir += Vector3::RIGHT;
// Normalize move vector so that diagonal strafing is not faster
if (moveDir.LengthSquared() > 0.0f)
moveDir.Normalize();
// If in air, allow control, but slower than when on ground
body->ApplyImpulse(rot * moveDir * (softGrounded ? MOVE_FORCE : INAIR_MOVE_FORCE));
if (softGrounded)
{
// When on ground, apply a braking force to limit maximum ground velocity
Vector3 brakeForce = -planeVelocity * BRAKE_FORCE;
body->ApplyImpulse(brakeForce);
// Jump. Must release jump control inbetween jumps
if (controls_.IsDown(CTRL_JUMP))
{
if (okToJump_)
{
body->ApplyImpulse(Vector3::UP * JUMP_FORCE);
okToJump_ = false;
}
}
else
okToJump_ = true;
}
// Play walk animation if moving on ground, otherwise fade it out
if (softGrounded && !moveDir.Equals(Vector3::ZERO))
animCtrl->PlayExclusive("Models/Jack_Walk.ani", 0, true, 0.2f);
else
animCtrl->Stop("Models/Jack_Walk.ani", 0.2f);
// Set walk animation speed proportional to velocity
animCtrl->SetSpeed("Models/Jack_Walk.ani", planeVelocity.Length() * 0.3f);
// Reset grounded flag for next frame
onGround_ = false;
}