private void Update()
{
if (body)
{
// Wheel turning
BeetleControls controls = Game.BEETLE_CONTROLS[index];
if (controls.useGamepad)
{
turn.target = Input.GetAxis(controls.hor);
}
else
{
turn.target = (Input.GetKey(controls.right) ? 1 : 0)
- (Input.GetKey(controls.left) ? 1 : 0);
}
Quaternion turnRot = Quaternion.Euler(0, turn * 15, 0);
wheelFrontLeft.localRotation = wheelFrontRight.localRotation = turnRot;
// Velocity jiggle
Vector3 diff = velocityPrev - body.velocity;
velocityPrev = body.velocity;
scale.velocity += diff.y * 0.0125f;
scale.velocity -= Mathf.Abs(diff.x) * 0.0025f;
scale.velocity -= Mathf.Abs(diff.z) * 0.0025f;
}
transform.localScale = new Vector3(1 - scale, 1 + scale, 1 - scale);
}
// ====================================================================================================================
private void FixedUpdate()
{
// Read input (using the controls for this beetle's index)
float h = 0;
float v = 0;
if (manager.AllowInput)
{
BeetleControls controls = Game.BEETLE_CONTROLS[index];
if (controls.useGamepad)
{
h = Input.GetAxisRaw(controls.hor);
v = Input.GetAxisRaw(controls.ver);
}
else
{
keycodeSteering.target = (Input.GetKey(controls.right) ? 1f : 0f)
- (Input.GetKey(controls.left) ? 1f : 0f);
h = keycodeSteering;
v = (Input.GetKey(controls.up) ? 1f : 0f)
- (Input.GetKey(controls.down) ? 1f : 0f);
}
}
// ====================================================================================
// Apply turn with horizontal input and based on the current velocity
float turn = Vector3.Dot(body.velocity, transform.forward) * h * turnForce;
body.AddRelativeTorque(0, turn, 0, ForceMode.Acceleration);
// Apply torque to keep kart upright
Quaternion r = Quaternion.FromToRotation(transform.up, Vector3.up);
Vector3 righting = new Vector3(r.x, r.y, r.z) * rightingForce;
body.AddTorque(righting, ForceMode.Acceleration);
// Apply angular drag
body.angularVelocity *= turnDrag;
// ====================================================================================
// Apply thrust with vertical input
Vector3 thrust = transform.forward * v * thrustForce;
body.AddForce(thrust, ForceMode.Acceleration);
// Apply drag (separated orthogonally)
Vector3 vF = Vector3.Project(body.velocity, transform.forward);
Vector3 vL = Vector3.Project(body.velocity, transform.right);
Vector3 vV = body.velocity - vF - vL;
body.velocity = (vF * thrustForwardDrag) + (vL * thrustLateralDrag) + vV;
// ====================================================================================
// Store speed
speedPrev = body.velocity.magnitude;
}