public VerletConstraint(VerletPoint _p0, VerletPoint _p1, float _minDist, float _maxDist)
{
p0 = _p0;
p1 = _p1;
minDist = _minDist;
maxDist = _maxDist;
}
void Start()
{
_balls = new List <GameObject>();
_points = new List <VerletPoint>();
_sticks = new List <VerletStick>();
_prefab.gameObject.SetActive(false);
for (int i = 0; i < _num; i++)
{
var g = Instantiate(_prefab, transform, false);
g.gameObject.SetActive(true);
g.transform.position = new Vector3(
0, (float)i * 0.4f, 0
);
_balls.Add(g);
var p = new VerletPoint(g.transform.position);
_points.Add(p);
}
for (int i = 0; i < _num - 1; i++)
{
var s = new VerletStick(
_points[i + 0],
_points[i + 1],
0.4f,
0.1f
);
_sticks.Add(s);
}
//verlt pointをつくる
}
public VerletStick(
VerletPoint p0, VerletPoint p1, float length, float elasticity
)
{
_point0 = p0;
_point1 = p1;
_length = length;
_elasticity = elasticity;
}
void ghostCollisionResolution(VerletPoint a, VerletPoint b)
{
if (LineSegmentsIntersect(new Vector2(a.xnext, a.ynext), new Vector2(b.xnext, b.ynext), boundBox.a, boundBox.b)) //intersect on left side
{
normal = new Vector2(-(boundBox.b.y - boundBox.a.y), boundBox.b.x - boundBox.a.x);
normal.Normalize();
if (a.xnext < b.xnext) //then point2.x must be changed
{
b.xnext = pn.xMin - 0.01f;
}
else
{
a.xnext = pn.xMin - 0.01f;
}
}
if (LineSegmentsIntersect(new Vector2(a.xnext, a.ynext), new Vector2(b.xnext, b.ynext), boundBox.b, boundBox.c)) //intersect on top
{
if (a.ynext < pn.yMax && b.ynext < pn.yMax)
{
a.ynext = pn.yMax + 0.01f;
b.ynext = pn.yMax + 0.01f;
}
else if (a.ynext < b.ynext)
{
a.ynext = pn.yMax + 0.01f;
}
else
{
b.ynext = pn.yMax + 0.01f;
}
}
if (LineSegmentsIntersect(new Vector2(a.xnext, a.ynext), new Vector2(b.xnext, b.ynext), boundBox.c, boundBox.d)) //intersect on right
{
if (a.xnext < b.xnext)
{
a.xnext = pn.xMax + 0.01f;
}
else
{
b.xnext = pn.xMax + 0.01f;
}
}
}
void GeneratePoints()
{
points = new VerletPoint[sizeX * sizeY];
for (int i = 0, y = 0; y < sizeY; y++)
{
for (int x = 0; x < sizeX; x++, i++)
{
// Vector3 np = new Vector3( (float)x / sizeX, (float)y / sizeY, 0 );
// Vector3 pointAlongTop = Vector3.Lerp( topLeftControlPoint.position, topRightControlPoint.position, np.x );
// Vector3 pointAlongBottom = Vector3.Lerp( bottomLeftControlPoint.position, bottomRightControlPoint.position, np.x );
// Vector3 pos = Vector3.Lerp( pointAlongBottom, pointAlongTop, np.y );
// var p = new VerletPoint( new Vector3( pos.x, pos.y, pos.z ) );
var p = new VerletPoint(new Vector3(x, y, 0f));
points[x + sizeX * y] = p;
}
}
}
void collisionWithCannonballs(VerletPoint p)
{
GameObject cbtoRemove = new GameObject();
foreach (GameObject cb in cannon.cannonballs)
{
if (Vector2.Distance(new Vector2(cb.transform.position.x, cb.transform.position.y), new Vector2(p.xnext, p.ynext)) <= 0.5f)
{
//collision detected
p.xnext = p.xcurr + Time.deltaTime * cb.GetComponent <CannonBall>().vix;
p.ynext = p.ycurr + Time.deltaTime * cb.GetComponent <CannonBall>().viy;
cbtoRemove = cb;
break;
}
}
if (cbtoRemove != null)
{
cannon.cannonballs.Remove(cbtoRemove);
Destroy(cbtoRemove);
}
}
public Stick(VerletPoint p0, VerletPoint p1)
{
this.p0 = p0;
this.p1 = p1;
distance = (p0.current - p1.current).magnitude;
}
private void generateGeometry(float scale, Vector3 vel)
{
float minX = CannonGame.wallWidth + CannonGame.wallStart + scale * 1.5f;
float maxX = CannonGame.terrainStart - scale;
Vector3 anchorPos = new Vector3(Random.Range(minX, maxX), scale * 1.65f, 0);
anchor = new VerletPoint(anchorPos, vel, true, false);
//temp storage
Vector3 p;
VerletPoint vP;
VerletConstraint vC;
//create round part of body
float theta = Mathf.PI * 0.75f;
float thetaEnd = -Mathf.PI * 0.5f;
float delta = (thetaEnd - theta) / 9.0f;
while (theta >= thetaEnd)
{
p = new Vector3(scale * Mathf.Cos(theta) + anchor.pos.x, scale * Mathf.Sin(theta) + anchor.pos.y);
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, anchor, scale - scale * 0.05f, scale + scale * 0.05f);
constraints.Add(vC);
theta += delta;
}
//Create flat bottom of body
float dist = scale / 3;
VerletPoint last = points[points.Count - 1];
rLegStartIdx = points.Count;
lLegStartIdx = points.Count + 1;
for (int i = 0; i < 3; i++)
{
p = last.pos;
p.x -= dist;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
last = vP;
}
//Create chest
p = last.pos;
p.x -= scale * 0.55f;
p.y += scale * 0.75f;
dist = (last.pos - p).magnitude;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
last = vP;
// Create left part of neck
p = last.pos;
dist = scale * 0.55f;
p.y += dist;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
last = vP;
// Create wottle
p = last.pos;
p.x -= 0.075f * scale;
p.y -= 0.65f * scale;
dist = (last.pos - p).magnitude;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
last = vP;
p = last.pos;
p.x -= 0.075f * scale;
p.y += 0.675f * scale;
dist = (last.pos - p).magnitude;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
last = vP;
// Create beak
p = last.pos;
p.x -= 0.25f * scale;
p.y += 0.075f * scale;
dist = (last.pos - p).magnitude;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
last = vP;
p = last.pos;
p.x += 0.35f * scale;
p.y += 0.25f * scale;
dist = (last.pos - p).magnitude;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
last = vP;
// Top of head
p = last.pos;
p.x += 0.15f * scale;
dist = (last.pos - p).magnitude;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
last = vP;
// Right of neck
p = last.pos;
p.x += 0.05f * scale;
p.y -= 0.55f * scale;
dist = (last.pos - p).magnitude;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
vC = new VerletConstraint(points[0], vP, dist, dist);
constraints.Add(vC);
bodyVertexCount = points.Count;
// Left leg;
last = points[lLegStartIdx];
p = last.pos;
p.y -= scale * 0.35f;
dist = (last.pos - p).magnitude;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
last = vP;
p = last.pos;
p.y -= scale * 0.35f;
p.x -= scale * 0.2f;
dist = (last.pos - p).magnitude;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
vC = new VerletConstraint(points[lLegStartIdx], vP, dist, dist);
constraints.Add(vC);
last = vP;
dist = (points[lLegStartIdx].pos - vP.pos).magnitude;
vC = new VerletConstraint(points[lLegStartIdx], vP, dist, dist);
constraints.Add(vC);
legVertexCount = points.Count - bodyVertexCount;
// Right leg;
last = points[rLegStartIdx];
p = last.pos;
p.y -= scale * 0.35f;
dist = (last.pos - p).magnitude;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
last = vP;
p = last.pos;
p.y -= scale * 0.35f;
p.x -= scale * 0.2f;
dist = (last.pos - p).magnitude;
vP = new VerletPoint(p, vel, false, true);
points.Add(vP);
vC = new VerletConstraint(vP, last, dist, dist);
constraints.Add(vC);
last = vP;
dist = (points[lLegStartIdx].pos - vP.pos).magnitude;
vC = new VerletConstraint(points[rLegStartIdx], vP, dist, dist);
constraints.Add(vC);
}
