private void OnEnable()
{
state = State.NEUTRAL;
speed = speedNeutral;
angleIndex = Random.Range(0, 4) * 2 + 1;
angle = Angles.GetAngle(angleIndex);
SetPSysColorLifetime(ps, colorsNeutral);
coll.enabled = true;
}
private static int DeflectAngleIndex(int angleIndex, Vector2 hitNormal, Vector2 velocity)
{
float dot = Vector2.Dot(hitNormal, velocity);
// 1 = same direction
// -1 = opposite direction
// 0 = perpendicular
// Bounce back
if (dot < -0.995f)
{
angleIndex += 4;
}
// Bounce to either side
if ((dot < +0.7853f && dot > +float.Epsilon) ||
(dot > -0.7853f && dot < -float.Epsilon))
{
Vector3 cross = Vector3.Cross(hitNormal, velocity).normalized;
// To right
if (cross == Vector3.back)
{
angleIndex += 2;
}
// To left
if (cross == Vector3.forward)
{
angleIndex -= 2;
}
}
// Follow the normal
if (dot >= -float.Epsilon &&
dot <= +float.Epsilon)
{
// convert normal to angle index
angleIndex = Angles.GetAngleIndex(Angles.GetRadian(hitNormal));
}
// Follow the velocity
if (dot >= +0.7853f && dot <= 1f)
{
// do nothing
}
angleIndex %= 8;
if (angleIndex < 0)
{
angleIndex = 8 + angleIndex;
}
return(angleIndex);
}
private void FixedUpdate()
{
Velocity = Vector2.zero;
if (inputMove >= 0)
{
walkDir = inputMove;
walkAngle = Angles.GetAngle(inputMove);
inputMove = -1;
Velocity = Angles.GetDirection(walkAngle) * moveSpeed;
swordAnchor.rotation = Quaternion.Euler(0f, 0f, Mathf.Rad2Deg * walkAngle);
}
rb.MovePosition(rb.position + (Velocity + (hitNormal * bounceForce)) * Time.fixedDeltaTime);
hitNormal *= forceFalloff.Evaluate(Mathf.Clamp01((Time.time - hitTime) / 1f));
}
public void Hit(int hitAngleIndex)
{
if (IsExploding)
{
return;
}
onHit.Invoke(gameObject);
if (IsCharged)
{
StartCoroutine(Explosion(4));
}
int angleDiff = 8 - angleIndex;
int hitAngleRelative = (hitAngleIndex + angleDiff) % 8;
// if (hitAngleRelative == 0) {
// Debug.Log("from behind");
// }
if (hitAngleRelative == 4)
{
angleIndex += 4;
}
if (hitAngleRelative > 0 && hitAngleRelative < 4)
{
angleIndex += 2;
}
if (hitAngleRelative > 4 && hitAngleRelative < 8)
{
angleIndex -= 2;
}
state = State.CHARGED;
SetPSysColorLifetime(ps, colorsCharged);
speed = speedCharged;
angleIndex %= 8;
if (angleIndex < 0)
{
angleIndex = 8 + angleIndex;
}
angle = Angles.GetAngle(angleIndex);
}
private IEnumerator Move(int angleIndex)
{
Vector2 length = Angles.GetDirection(angleIndex) * moveLength;
Vector2 startPos = transform.position;
float startTime = Time.time;
while (Time.time - startTime < moveDuration)
{
float dt = (Time.time - startTime) / moveDuration;
float pos = positionOverTime.Evaluate(dt);
transform.position = startPos + (length * pos);
yield return(null);
}
transform.position = startPos + length;
onFreeCoord.Invoke(startPos);
onOccupyCoord.Invoke(transform.position);
}
private void FixedUpdate()
{
rb.MovePosition(rb.position + GetVelocity() * Time.fixedDeltaTime);
hitNormal = Vector2.zero;
for (int i = 0; i < raycastDirs.Length; ++i)
{
hitNormal += Raycast(raycastDirs[i]);
}
if (hitNormal == Vector2.zero)
{
return;
}
angleIndex = DeflectAngleIndex(angleIndex, hitNormal, GetVelocity().normalized);
angle = Angles.GetAngle(angleIndex);
rb.MovePosition(rb.position + GetVelocity() * Time.fixedDeltaTime * 2f);
}
private Vector2 GetVelocity()
{
return(Angles.GetDirection(angle) * speed);
}