// state functions
public void roam()
{
var point = nav.GetClosestPoint(
new Vector3(
(float)rng.NextDouble() * 40 - 20,
(float)rng.NextDouble() * 40 - 20,
(float)rng.NextDouble() * 40 - 20)
);
var path = nav.GetSimplePath(Translation, point);
GD.Print(path.Length);
debug.Clear();
debug.Begin(Mesh.PrimitiveType.LineStrip);
foreach (Vector3 n in path)
{
debug.AddVertex(n);
}
debug.End();
target_path = new List <Vector3>(path);
move_flag = true;
}
public override void Draw()
{
base.Draw();
geometry.Clear();
geometry.Begin(Mesh.PrimitiveType.Triangles);
for (int i = 0; i < numParticles; i++)
{
Particle particle = particles[i];
if (!particle.alive)
{
continue;
}
geometry.SetColor(particle.color);
DrawTrail(particle.customData["trail"] as Transform[]);
}
geometry.End();
}
protected override void _DebugDraw(ImmediateGeometry ig)
{
if (Owner != null)
{
ig.Clear();
ig.Begin(Mesh.PrimitiveType.LineStrip);
ig.SetColor(new Color(1, 0, 0));
if (!ig.IsSetAsToplevel())
{
ig.SetAsToplevel(true);
}
ig.SetTranslation(new Vector3(0, 0, 0));
ig.AddVertex(Owner.Translation);
foreach (var p in way_points)
{
ig.AddVertex(p);
}
ig.End();
}
}
public override void _Process(float delta)
{
if (tookDamage)
{
timer -= delta;
if (timer < 0)
{
tookDamage = false;
canShoot = !canShoot;
UpdateColor();
}
}
if (Engine.EditorHint)
{
if (updateLine)
{
updateLine = false;
tragectory.Clear();
tragectory.Begin(Mesh.PrimitiveType.LineStrip);
float time = 0;
Vector3 vect = (GlobalTransform.basis.y * strength);
float step = .01f;
while (time < 2)
{
tragectory.AddVertex(GlobalTransform.origin +
new Vector3(
vect.x * time,
vect.y * time - (PlayerOptions.gravity / 2) * time * time,
vect.z * time
));
time += step;
}
tragectory.End();
}
}
}
public override void Draw()
{
base.Draw();
geometry.Clear();
geometry.Begin(Mesh.PrimitiveType.Triangles);
for (int i = 0; i < numParticles - 1; i++)
{
Particle currParticle = particles[i];
Particle nextParticle = particles[i + 1];
Transform curr = currParticle.transform;
Transform next = nextParticle.transform;
Vector3 currPointPos = curr.origin;
Vector3 nextPointPos = next.origin;
//(point[i] - point[i-1]).cross(cameraPosition - point[i]).normalized() * (thickness / 2);
Vector3 right = (nextPointPos - currPointPos).Cross(cameraPos - nextPointPos).Normalized();
Vector3 currPointRight = right;
Vector3 nextPointRight = right;
Vector3 currPointUp = (cameraPos - currPointPos).Normalized();
Vector3 nextPointUp = (cameraPos - nextPointPos).Normalized();
float currUVX = (i + 0) / (float)(numParticles - 1f);
float nextUVX = (i + 1) / (float)(numParticles - 1f);
float currWidth = curr.basis.x.Length();
float nextWidth = next.basis.x.Length();
Vector3[] normals = new Vector3[] {
currPointUp,
nextPointUp,
currPointUp,
nextPointUp,
nextPointUp,
currPointUp
};
Vector2[] uvs = new Vector2[] {
new Vector2(currUVX, 0),
new Vector2(nextUVX, 0),
new Vector2(currUVX, 1),
new Vector2(nextUVX, 0),
new Vector2(nextUVX, 1),
new Vector2(currUVX, 1),
};
Vector3[] vertices = new Vector3[] {
currPointPos - currPointRight * currWidth,
nextPointPos - nextPointRight * nextWidth,
currPointPos + currPointRight * currWidth,
nextPointPos - nextPointRight * nextWidth,
nextPointPos + nextPointRight * nextWidth,
currPointPos + currPointRight * currWidth
};
Color[] colors = new Color[] {
currParticle.color,
nextParticle.color,
currParticle.color,
nextParticle.color,
nextParticle.color,
currParticle.color
};
for (int j = 0; j < 6; j++)
{
geometry.SetColor(colors[j]);
geometry.SetNormal(normals[j]);
geometry.SetUv(uvs[j]);
geometry.AddVertex(vertices[j]);
}
}
geometry.End();
}
public override void _PhysicsProcess(float delta)
{
base._PhysicsProcess(delta);
var ribbonCurve = new Curve3D();
// based on the gap between the two controllers, the control points move further away from the origin as the controllers are moved apart
// without dynamically adjusting the control points, the curve would get straighter as the controllers moved apart.
var gapWidth = (RightController.GlobalTransform.origin - LeftController.GlobalTransform.origin).Length();
// control point locations are offset from the origin point (i.e not global coordinates)
ribbonCurve.AddPoint(LeftController.RibbonGlobalOrigin,
AdjustControlPoint(LeftController.ControlPointInOffset, gapWidth),
AdjustControlPoint(LeftController.ControlPointOutOffset, gapWidth));
ribbonCurve.AddPoint(RightController.RibbonGlobalOrigin,
AdjustControlPoint(RightController.ControlPointInOffset, gapWidth),
AdjustControlPoint(RightController.ControlPointOutOffset, gapWidth));
// figure out a vector at 90 degrees to origin and control point. Vector will be used to offset one side of the ribbon, and give it a consistent width and orientation
// need this for both controllers, and then gradually rotate from one to the other over the course of the ribbon length
// Curve points pass through the centre of the Ribbon, as it appears on-screen.
// To get the vertices to draw, need to offset from curvePoints for the front and back edges of the Ribbon, as below
RibbonPoints = ribbonCurve.Tessellate();
// will interpolate between these edges to give the ribbon a smooth "twist" over its length
var leftRibbonFrontEdgeOffset = LeftController.RibbonFrontEdgeOffset;
var leftRibbonBackEdgeOffset = LeftController.RibbonBackEdgeOffset;
var rightRibbonFrontEdgeOffset = RightController.RibbonFrontEdgeOffset;
var rightRibbonBackEdgeOffset = RightController.RibbonBackEdgeOffset;
var triStripPoints = new Vector3[RibbonPoints.Length * 2];
var curvePointLengthFloat = (float)RibbonPoints.Length;
for (var i = 0; i < RibbonPoints.Length; i++)
{
// Offset front and back from curvePoints, as curvePoints pass through the centre of the ribbon
var frontEdgePoint = RibbonPoints[i] + leftRibbonFrontEdgeOffset.LinearInterpolate(rightRibbonFrontEdgeOffset, i / curvePointLengthFloat);
var backEdgePoint = RibbonPoints[i] + leftRibbonBackEdgeOffset.LinearInterpolate(rightRibbonBackEdgeOffset, i / curvePointLengthFloat);
triStripPoints[i * 2] = frontEdgePoint;
triStripPoints[(i * 2) + 1] = backEdgePoint;
}
RibbonMesh.Clear(); // without Clear, triangles from previous loops accumulate on screen
RibbonMesh.Begin(Mesh.PrimitiveType.TriangleStrip);
for (var i = 0; i < triStripPoints.Length; i++)
{
// pass vertices to Normal function in anti-clockwise order
// this will vary depending on which side of the ribbon the vertex is added, hence the i % 2... condition. i.e.:
// - odd number: n, n-1, n-2
// - even number: n-2, n-1, n
var normal = i < 3 ? GetTriangleNormal(triStripPoints[2], triStripPoints[1], triStripPoints[0])
: (i % 2 == 0 ? GetTriangleNormal(triStripPoints[i], triStripPoints[i - 1], triStripPoints[i - 2])
: GetTriangleNormal(triStripPoints[i - 2], triStripPoints[i - 1], triStripPoints[i]));
RibbonMesh.SetNormal(normal);
RibbonMesh.AddVertex(triStripPoints[i]);
}
RibbonMesh.End();
}
