void Update()
{
Color c = text.color;
c.a = VectorExtras.Remap(min, max, 0, 1, terrain.GetPlayerDistance());
text.color = c;
}
void AddPath()
{
for (int i = 0; i < segmentsPerChunk; i++)
{
int ind = i + overallIndex;
float noise = Perlin1D(ind, pathNoiseScale, pathNoiseOctaves, pathNoisePersistence, pathNoiseLacunarity);
Vector2 point;
float noiseFactor = VectorExtras.Remap(0, 100, 0, 1, ind);
point = Vector2.down * ind * segmentLength + (Vector2.right * noise * noiseFactor);
path.Add(point);
}
overallIndex += segmentsPerChunk;
}
public void UpdateTerrain()
{
bottomPoints.Clear();
topPoints.Clear();
float pathLength = 0;
for (int i = 1; i < path.Count; i++)
{
Vector2 segment = path[i] - path[i - 1];
Vector2 perp = Vector2.Perpendicular(segment).normalized;
Vector2 startPerpCutoff = perp;
if (i > 1)
{
Vector2 prevSegment = path[i - 1] - path[i - 2];
Vector2 prevPerp = Vector2.Perpendicular(prevSegment).normalized;
startPerpCutoff = ((startPerpCutoff + prevPerp) / 2).normalized;
}
Vector2 endPerpCutoff = perp;
if (i < path.Count - 1)
{
Vector2 nextSegment = path[i + 1] - path[i];
Vector2 nextPerp = Vector2.Perpendicular(nextSegment).normalized;
endPerpCutoff = ((endPerpCutoff + nextPerp) / 2).normalized;
}
// Debug.DrawLine(path[i - 1], path[i - 1] + startPerpCutoff * 100, Color.magenta);
// Debug.DrawLine(path[i], path[i] + endPerpCutoff * 100, Color.cyan);
for (int j = 0; j < segment.magnitude; j += terrainPointDensity)
{
Vector2 point = Vector2.Lerp(path[i - 1], path[i], j / segment.magnitude);
float sample = previousChunksDistance + pathLength + Vector2.Distance(path[i - 1], point);
float bottomNoise = Perlin1D(sample, terrainNoiseScale, terrainNoiseOctaves, terrainNoisePersistence, terrainNoiseLacunarity, 0);
float topNoise = Perlin1D(sample, terrainNoiseScale, terrainNoiseOctaves, terrainNoisePersistence, terrainNoiseLacunarity, 100);
float caveWidth = VectorExtras.Remap(0, distanceToMinCaveWidth, startingCaveWidth, minCaveWidth, sample);
Vector2 bottomPoint = point - ((perp * caveWidth) + (perp * bottomNoise));
Vector2 topPoint = point + ((perp * caveWidth) + (perp * topNoise));
if (!IsLeft(path[i - 1], path[i - 1] + startPerpCutoff, bottomPoint) && IsLeft(path[i], path[i] + endPerpCutoff, bottomPoint))
{
bottomPoints.Add(bottomPoint);
}
if (!IsLeft(path[i - 1], path[i - 1] + startPerpCutoff, topPoint) && IsLeft(path[i], path[i] + endPerpCutoff, topPoint))
{
topPoints.Add(topPoint);
}
}
pathLength += segment.magnitude;
}
float skirtPadding = 3000;
topPoints.Insert(0, topPoints[0] + Vector2.right * skirtPadding);
topPoints.Add(topPoints[topPoints.Count - 1] + Vector2.down * skirtPadding);
topPoints.Add(topPoints[topPoints.Count - 1] + Vector2.right * skirtPadding);
bottomPoints.Insert(0, bottomPoints[0] + Vector2.left * skirtPadding);
bottomPoints.Add(bottomPoints[bottomPoints.Count - 1] + Vector2.down * skirtPadding);
bottomPoints.Add(bottomPoints[bottomPoints.Count - 1] + Vector2.left * skirtPadding);
if (Application.isPlaying)
{
topSection.UpdateSpline(topPoints);
bottomSection.UpdateSpline(bottomPoints);
}
}