void GenerateChunk(int startx)
{
Node n = scene.CreateChild();
n.SetPosition2D(startx, 0);
var g = n.CreateComponent <CustomGeometry>();
g.SetMaterial(chunkmat);
g.BeginGeometry(0, PrimitiveType.TRIANGLE_LIST);
var s = n.CreateComponent <CustomGeometry>();
s.SetMaterial(surfMat);
s.BeginGeometry(0, PrimitiveType.TRIANGLE_LIST);
List <Vector2> surface = new List <Vector2>()
{
new Vector2(0,
(float)noise.Evaluate((startx) * noiseScaleX, 0) * noiseScaleY
)
};
lastSurfaceExtrusion += Vector3.Left * chunksize;
float incr = 0.5f;
for (float i = 0; i < chunksize - float.Epsilon * 2; i += incr)
{
float iend = i + incr;
float tlY = SampleSurface(startx + i);
float trY = SampleSurface(startx + iend);
float blY = tlY + chunkheight;
float brY = trY + chunkheight;
Vector3 bl = new Vector3(i, blY, 0);
Vector3 tl = new Vector3(i, tlY, 0);
Vector3 br = new Vector3(iend, brY, 0);
Vector3 tr = new Vector3(iend, trY, 0);
//phys
surface.Add(new Vector2(tr));
//decor
CreateDecor(tr + Vector3.Right * startx, tl - tr);
//surface visual
Vector2 startV = Vector2.UnitX * (i / chunksize) * surfaceVisualRepeatPerChunk;
Vector2 endV = Vector2.UnitX * (iend / chunksize * surfaceVisualRepeatPerChunk);
//bl
s.DefineVertex(lastSurfaceExtrusion);
s.DefineTexCoord(startV);
//tl
s.DefineVertex(tl);
s.DefineTexCoord(startV - Vector2.UnitY);
//tr
s.DefineVertex(tr);
s.DefineTexCoord(-Vector2.UnitY + endV);
//bl
s.DefineVertex(lastSurfaceExtrusion);
s.DefineTexCoord(startV);
//tr
s.DefineVertex(tr);
s.DefineTexCoord(-Vector2.UnitY + endV);
//br
lastSurfaceExtrusion = tr + Quaternion.FromAxisAngle(Vector3.Back, 90) * Vector3.NormalizeFast(tr - tl);
s.DefineVertex(lastSurfaceExtrusion);
s.DefineTexCoord(endV);
//ground
//bl
g.DefineVertex(bl);
g.DefineTexCoord(new Vector2(bl / chunksize));
//tl
g.DefineVertex(tl);
g.DefineTexCoord(new Vector2(tl / chunksize));
//tr
g.DefineVertex(tr);
g.DefineTexCoord(new Vector2(tr / chunksize));
//bl
g.DefineVertex(bl);
g.DefineTexCoord(new Vector2(bl / chunksize));
//tr
g.DefineVertex(tr);
g.DefineTexCoord(new Vector2(tr / chunksize));
//br
g.DefineVertex(br);
g.DefineTexCoord(new Vector2(br / chunksize));
}
s.Commit();
g.Commit();
CollisionChain2D col = n.CreateComponent <CollisionChain2D>();
col.SetLoop(false);
col.SetFriction(10);
col.SetVertexCount((uint)surface.Count + 1);
chunks.Add(col);
//Vector3 smoother = Quaternion.FromRotationTo(Vector3.Left, new Vector3(-1,-.3f,0)) * new Vector3(surface[0] - surface[1]);
//col.SetVertex(0,surface[0] + new Vector2(smoother));
Vector2 smoother = new Vector2(-incr * .5f, (float)noise.Evaluate((startx - incr * .5f) * noiseScaleX, 0) * noiseScaleY - 0.005f);
col.SetVertex(0, smoother);
uint c2 = 0;
foreach (Vector2 surfpoint in surface)
{
col.SetVertex(++c2, new Vector2(surfpoint.X, surfpoint.Y));
}
n.CreateComponent <RigidBody2D>().SetBodyType(BodyType2D.BT_STATIC);
}
void GenerateChunk(int startx)
{
// We create a node and position where the chunk starts
Node node = _scene.CreateChild();
node.SetPosition2D(startx, 0);
// We create components to render the geometries of the surface and the ground
var groundComponent = node.CreateComponent <CustomGeometry>();
groundComponent.SetMaterial(_chunkmat);
groundComponent.BeginGeometry(0, PrimitiveType.TRIANGLE_LIST);
var surfaceComponent = node.CreateComponent <CustomGeometry>();
surfaceComponent.SetMaterial(_surfMat);
surfaceComponent.BeginGeometry(0, PrimitiveType.TRIANGLE_LIST);
// We initialize and add a single entry to the surface points list
List <Vector2> surface = new List <Vector2>()
{
new Vector2(0,
(float)_noise.Evaluate(startx * NoiseScaleX, 0) * NoiseScaleY
)
};
// We translate the last surface extrusion point so it's local relative to the chunk we're creating
_lastSurfaceExtrusion += Vector3.Left * Chunksize;
// We //TODO continue
float incr = SurfaceSegmentSize;
for (float i = 0; i < Chunksize - float.Epsilon * 2; i += incr)
{
float iend = i + incr;
float tlY = SampleSurface(startx + i);
float trY = SampleSurface(startx + iend);
float blY = tlY + Chunkheight;
float brY = trY + Chunkheight;
Vector3 bl = new Vector3(i, blY, -10);
Vector3 tl = new Vector3(i, tlY, -10);
Vector3 br = new Vector3(iend, brY, -10);
Vector3 tr = new Vector3(iend, trY, -10);
//phys
surface.Add(new Vector2(tr));
//decor
CreateDecor(tr + Vector3.Right * startx, tl - tr);
//surface visual
Vector2 startV = Vector2.UnitX * (i / Chunksize) * SurfaceRepeatPerChunk;
Vector2 endV = Vector2.UnitX * (iend / Chunksize * SurfaceRepeatPerChunk);
//bl
surfaceComponent.DefineVertex(_lastSurfaceExtrusion);
surfaceComponent.DefineTexCoord(startV);
//tl
surfaceComponent.DefineVertex(tl);
surfaceComponent.DefineTexCoord(startV - Vector2.UnitY);
//tr
surfaceComponent.DefineVertex(tr);
surfaceComponent.DefineTexCoord(-Vector2.UnitY + endV);
//bl
surfaceComponent.DefineVertex(_lastSurfaceExtrusion);
surfaceComponent.DefineTexCoord(startV);
//tr
surfaceComponent.DefineVertex(tr);
surfaceComponent.DefineTexCoord(-Vector2.UnitY + endV);
//br
_lastSurfaceExtrusion = tr + Quaternion.FromAxisAngle(Vector3.Back, 90) * Vector3.NormalizeFast(tr - tl);
surfaceComponent.DefineVertex(_lastSurfaceExtrusion);
surfaceComponent.DefineTexCoord(endV);
//ground
//bl
groundComponent.DefineVertex(bl);
groundComponent.DefineTexCoord(new Vector2(bl / Chunksize));
//tl
groundComponent.DefineVertex(tl);
groundComponent.DefineTexCoord(new Vector2(tl / Chunksize));
//tr
groundComponent.DefineVertex(tr);
groundComponent.DefineTexCoord(new Vector2(tr / Chunksize));
//bl
groundComponent.DefineVertex(bl);
groundComponent.DefineTexCoord(new Vector2(bl / Chunksize));
//tr
groundComponent.DefineVertex(tr);
groundComponent.DefineTexCoord(new Vector2(tr / Chunksize));
//br
groundComponent.DefineVertex(br);
groundComponent.DefineTexCoord(new Vector2(br / Chunksize));
}
surfaceComponent.Commit();
groundComponent.Commit();
CollisionChain2D col = node.CreateComponent <CollisionChain2D>();
col.SetLoop(false);
col.SetFriction(10);
col.SetVertexCount((uint)surface.Count + 1);
_chunks.Add(col);
//Vector3 smoother = Quaternion.FromRotationTo(Vector3.Left, new Vector3(-1,-.3f,0)) * new Vector3(surface[0] - surface[1]);
//col.SetVertex(0,surface[0] + new Vector2(smoother));
Vector2 smoother = new Vector2(-incr * .5f, (float)_noise.Evaluate((startx - incr * .5f) * NoiseScaleX, 0) * NoiseScaleY - 0.005f);
col.SetVertex(0, smoother);
uint c2 = 0;
foreach (Vector2 surfpoint in surface)
{
col.SetVertex(++c2, new Vector2(surfpoint.X, surfpoint.Y));
}
node.CreateComponent <RigidBody2D>().SetBodyType(BodyType2D.BT_STATIC);
}
void GenerateChunk(int startx)
{
// We create a node and position where the chunk starts
Node node = _scene.CreateChild();
node.SetPosition2D(startx, 0);
// We create components to render the geometries of the surface and the ground
var groundComponent = node.CreateComponent <CustomGeometry>();
groundComponent.SetMaterial(_chunkMaterial);
groundComponent.BeginGeometry(0, PrimitiveType.TRIANGLE_LIST);
var surfaceComponent = node.CreateComponent <CustomGeometry>();
surfaceComponent.SetMaterial(_surfaceMaterial);
surfaceComponent.BeginGeometry(0, PrimitiveType.TRIANGLE_LIST);
// We initialize and add a single entry to the surface collider points list
List <Vector2> surfacePoints = new List <Vector2>()
{
new Vector2(0,
(float)_noise.Evaluate(startx * NoiseScaleX, 0) * NoiseScaleY
)
};
// We translate the last surface extrusion point so it's local relative to the chunk we're creating
_lastSurfaceExtrusion += Vector3.Left * Chunksize;
// We loop all the segments in this chunk
float incr = SurfaceSegmentSize;
for (float x = 0; x < Chunksize - float.Epsilon * 8; x += incr)
{
// We store vars for the position for the current segment end point x position and for the y position of the 4 points
float xEnd = x + incr;
float tlY = SampleSurface(startx + x);
float trY = SampleSurface(startx + xEnd);
float blY = tlY + Chunkheight;
float brY = trY + Chunkheight;
// We create vectors that represent
Vector3 bl = new Vector3(x, blY, -10);
Vector3 tl = new Vector3(x, tlY, -10);
Vector3 br = new Vector3(xEnd, brY, -10);
Vector3 tr = new Vector3(xEnd, trY, -10);
// We add the top right point to the surface points list (remember we added the first point in the list init)
surfacePoints.Add(new Vector2(tr));
// We call the CreateDecor function passing the global position of the current segment end point and the segment angle
CreateDecor(tr + Vector3.Right * startx, tl - tr);
// We create the geometry of the surface (UV os oriented according to the surface)
Vector2 startV = Vector2.UnitX * (x / Chunksize) * SurfaceRepeatPerChunk;
Vector2 endV = Vector2.UnitX * (xEnd / Chunksize * SurfaceRepeatPerChunk);
//bl
surfaceComponent.DefineVertex(_lastSurfaceExtrusion);
surfaceComponent.DefineTexCoord(startV);
//tl
surfaceComponent.DefineVertex(tl);
surfaceComponent.DefineTexCoord(startV - Vector2.UnitY);
//tr
surfaceComponent.DefineVertex(tr);
surfaceComponent.DefineTexCoord(-Vector2.UnitY + endV);
//bl
surfaceComponent.DefineVertex(_lastSurfaceExtrusion);
surfaceComponent.DefineTexCoord(startV);
//tr
surfaceComponent.DefineVertex(tr);
surfaceComponent.DefineTexCoord(-Vector2.UnitY + endV);
//br - We store the last point to use for continuity
_lastSurfaceExtrusion = tr + Quaternion.FromAxisAngle(Vector3.Back, 90) * Vector3.NormalizeFast(tr - tl);
surfaceComponent.DefineVertex(_lastSurfaceExtrusion);
surfaceComponent.DefineTexCoord(endV);
// We create the geometry of the ground (UV is in world coordinates)
//bl
groundComponent.DefineVertex(bl);
groundComponent.DefineTexCoord(new Vector2(bl / Chunksize));
//tl
groundComponent.DefineVertex(tl);
groundComponent.DefineTexCoord(new Vector2(tl / Chunksize));
//tr
groundComponent.DefineVertex(tr);
groundComponent.DefineTexCoord(new Vector2(tr / Chunksize));
//bl
groundComponent.DefineVertex(bl);
groundComponent.DefineTexCoord(new Vector2(bl / Chunksize));
//tr
groundComponent.DefineVertex(tr);
groundComponent.DefineTexCoord(new Vector2(tr / Chunksize));
//br
groundComponent.DefineVertex(br);
groundComponent.DefineTexCoord(new Vector2(br / Chunksize));
}
// We commit the geometry data we just created
surfaceComponent.Commit();
groundComponent.Commit();
// We create the collider component for the chunk surface
CollisionChain2D surfaceCollider = node.CreateComponent <CollisionChain2D>();
surfaceCollider.SetLoop(false);
surfaceCollider.SetFriction(1);
surfaceCollider.SetVertexCount((uint)surfacePoints.Count + 1);
_chunks.Add(surfaceCollider);
// We add a small overlapping segment with a bit of negative offset in y so the wheel passes smoothly over chunk seams
Vector2 smoother = new Vector2(-incr * .5f, (float)_noise.Evaluate((startx - incr * .5f) * NoiseScaleX, 0) * NoiseScaleY - .005f);
surfaceCollider.SetVertex(0, smoother);
// Finally, we set the vertex of the surface collider
for (int c = 0; c < surfacePoints.Count; c++)
{
Vector2 surfacePoint = surfacePoints[c];
surfaceCollider.SetVertex((uint)c + 1, surfacePoint);
}
// A collider must have a rigid body to interact with other bodies, even if static which is the case
node.CreateComponent <RigidBody2D>().SetBodyType(BodyType2D.BT_STATIC);
}