func (r *Receiver) Simulate(gameTime gameloop.GameTime) {
r.SimulationTime = gameTime
deltaT := gameTime.Delta.Seconds()
if !r.UIState.Impulse.ApproxEqual(glm.Vec4d{}) {
regulatedImpulse := r.UIState.Impulse.Normalize().Mul(r.Constants.PlayerImpulseMomentumLimit)
viewAdjustedImpulse := gtk.ToHomogVec4D(r.Player.OrientationH.Rotate(gtk.ToVec3D(regulatedImpulse)))
r.Player.Velocity = r.Player.Velocity.Add(viewAdjustedImpulse)
r.UIState.Impulse = glm.Vec4d{}
}
aggregateVelocity := r.Player.Velocity
if !r.UIState.Movement.ApproxEqual(glm.Vec4d{}) {
regulatedMovement := r.UIState.Movement.Normalize().Mul(r.Constants.PlayerMovementLimit)
viewAdjustedMovement := gtk.ToHomogVec4D(r.Player.OrientationH.Rotate(gtk.ToVec3D(regulatedMovement)))
aggregateVelocity = aggregateVelocity.Add(viewAdjustedMovement)
}
dp := aggregateVelocity.Mul(deltaT)
for _, p := range r.Portals {
portalview := p.Portalview
pos := portalview.Mul4x1(r.Player.Position)
v := portalview.Mul4x1(dp)
if pos[2] < 0 && v[2] > 0 {
t := -pos[2] / v[2]
hit := pos.Add(v.Mul(t))
if math.Abs(float64(hit[0])) <= 1 &&
math.Abs(float64(hit[1])) <= 1 &&
t > 0 && t <= 1 {
// fmt.Println("crossed portal", i, pos)
ti := p.Transform.Inv()
r.Player.Transform(ti)
dp = ti.Mul4x1(dp)
r.Data.Inception = r.Data.Inception.Mul4(p.Transform)
break
}
}
}
p0 := r.Player.Position
r.Player.Position = p0.Add(dp)
//apply gravity if player is off the ground (ys==0)
if r.Player.Position[1] > 1 {
r.Player.Velocity[1] = r.Player.Velocity[1] + r.Constants.Gravity*deltaT
} else {
r.Player.Velocity[1] = 0
if p0[1] >= 1 {
r.Player.Position[1] = 1
}
}
p := r.Player.Position
translate := glm.Translate3Dd(-p[0], -p[1], -p[2])
rotation := r.Player.Orientation.Conjugate().Mat4()
r.Data.Cameraview = rotation.Mul4(translate)
}
func (r *Receiver) PanView(pos, delta glm.Vec2d) {
theta := delta.Mul(r.Constants.PanSensitivity * r.Constants.Fov)
turnV := glm.QuatRotated(theta[1], gtk.ToVec3D(r.UIState.TiltAxis))
turnH := glm.QuatRotated(-theta[0], gtk.ToVec3D(r.UIState.PanAxis))
r.UIState.Orientation = turnH.Mul(r.UIState.Orientation).Mul(turnV)
}
func (r *Receiver) PanView(pos, delta glm.Vec2d) {
theta := delta.Mul(r.Constants.PlayerFOV * r.Constants.PlayerPanSensitivity)
turnV := glm.QuatRotated(theta[1], gtk.ToVec3D(r.Player.TiltAxis))
turnH := glm.QuatRotated(-theta[0], gtk.ToVec3D(r.Player.PanAxis))
r.Player.OrientationH = turnH.Mul(r.Player.OrientationH)
r.Player.Orientation = turnH.Mul(r.Player.Orientation).Mul(turnV)
r.Invalid = true
}
