public void updateLists()
{
// handle removals
if (_entitiesToRemove.Count > 0)
{
Utils.swap(ref _entitiesToRemove, ref _tempEntityList);
for (var i = 0; i < _tempEntityList.Count; i++)
{
var entity = _tempEntityList[i];
// handle the tagList
removeFromTagList(entity);
// handle the regular entity list
_entities.remove(entity);
entity.onRemovedFromScene();
entity.scene = null;
if (Core.entitySystemsEnabled)
{
scene.entityProcessors.onEntityRemoved(entity);
}
}
_tempEntityList.Clear();
}
// handle additions
if (_entitiesToAdd.Count > 0)
{
Utils.swap(ref _entitiesToAdd, ref _tempEntityList);
for (var i = 0; i < _tempEntityList.Count; i++)
{
var entity = _tempEntityList[i];
_entities.add(entity);
entity.scene = scene;
// handle the tagList
addToTagList(entity);
if (Core.entitySystemsEnabled)
{
scene.entityProcessors.onEntityAdded(entity);
}
}
// now that all entities are added to the scene, we loop through again and call onAddedToScene
for (var i = 0; i < _tempEntityList.Count; i++)
{
_tempEntityList[i].onAddedToScene();
}
_tempEntityList.Clear();
_isEntityListUnsorted = true;
}
if (_isEntityListUnsorted)
{
_entities.sort();
_isEntityListUnsorted = false;
}
// sort our tagList if needed
if (_unsortedTags.Count > 0)
{
for (int i = 0, count = _unsortedTags.Count; i < count; i++)
{
var tag = _unsortedTags[i];
_entityDict[tag].Sort();
}
_unsortedTags.Clear();
}
}
void calculateVertices()
{
if (!_areVertsDirty || _points.length < 2)
{
return;
}
_areVertsDirty = false;
_indices.reset();
_vertices.reset();
var maxX = float.MinValue;
var minX = float.MaxValue;
var maxY = float.MinValue;
var minY = float.MaxValue;
if (_useStartEndWidths)
{
_maxWidth = System.Math.Max(_startWidth, _endWidth);
}
// calculate line length first and simulataneously get our min/max points for the bounds
var lineLength = 0f;
var halfMaxWidth = _maxWidth * 0.5f;
_points.buffer[0].lengthFromPreviousPoint = 0;
for (var i = 0; i < _points.length - 1; i++)
{
var distance = Vector2.Distance(_points.buffer[i].position, _points.buffer[i + 1].position);
_points.buffer[i + 1].lengthFromPreviousPoint = distance;
lineLength += distance;
maxX = Mathf.maxOf(maxX, _points.buffer[i].position.X + halfMaxWidth, _points.buffer[i + 1].position.X + halfMaxWidth);
minX = Mathf.minOf(minX, _points.buffer[i].position.X - halfMaxWidth, _points.buffer[i + 1].position.X - halfMaxWidth);
maxY = Mathf.maxOf(maxY, _points.buffer[i].position.Y + halfMaxWidth, _points.buffer[i + 1].position.Y + halfMaxWidth);
minY = Mathf.minOf(minY, _points.buffer[i].position.Y - halfMaxWidth, _points.buffer[i + 1].position.Y - halfMaxWidth);
}
_bounds.x = minX;
_bounds.y = minY;
_bounds.width = maxX - minX;
_bounds.height = maxY - minY;
// special case: single segment
if (_points.length == 2)
{
if (_useStartEndWidths)
{
_points.buffer[0].width = _startWidth;
_points.buffer[1].width = _endWidth;
}
if (_useStartEndColors)
{
_points.buffer[0].color = _startColor;
_points.buffer[1].color = _endColor;
}
_firstSegment.setPoints(ref _points.buffer[0], ref _points.buffer[1]);
addSingleSegmentLine(ref _firstSegment, _points.buffer[1].color);
return;
}
var distanceSoFar = 0f;
var fusedPoint = Vector2.Zero;
var vertIndex = 0;
var thirdPoint = new SegmentPoint();
for (var i = 0; i < _points.length - 1; i++)
{
var firstPoint = _points.buffer[i];
var secondPoint = _points.buffer[i + 1];
var hasThirdPoint = _points.length > i + 2;
if (hasThirdPoint)
{
thirdPoint = _points.buffer[i + 2];
}
// we need the distance along the line of both the first and second points. distanceSoFar will always be for the furthest point
// which is the previous point before adding the current segment distance.
var firstPointDistance = distanceSoFar;
distanceSoFar += secondPoint.lengthFromPreviousPoint;
var firstPointRatio = firstPointDistance / lineLength;
var secondPointRatio = distanceSoFar / lineLength;
var thirdPointRatio = 0f;
if (hasThirdPoint)
{
thirdPointRatio = (distanceSoFar + thirdPoint.lengthFromPreviousPoint) / lineLength;
}
if (_useStartEndColors)
{
ColorExt.lerp(ref _startColor, ref _endColor, out firstPoint.color, firstPointRatio);
ColorExt.lerp(ref _startColor, ref _endColor, out secondPoint.color, secondPointRatio);
if (hasThirdPoint)
{
ColorExt.lerp(ref _startColor, ref _endColor, out thirdPoint.color, thirdPointRatio);
}
}
if (_useStartEndWidths)
{
firstPoint.width = Mathf.lerp(_startWidth, _endWidth, firstPointRatio);
secondPoint.width = Mathf.lerp(_startWidth, _endWidth, secondPointRatio);
if (hasThirdPoint)
{
thirdPoint.width = Mathf.lerp(_startWidth, _endWidth, thirdPointRatio);
}
}
if (i == 0)
{
_firstSegment.setPoints(ref firstPoint, ref secondPoint);
_secondSegment.setPoints(ref secondPoint, ref thirdPoint);
}
else
{
Utils.swap(ref _firstSegment, ref _secondSegment);
if (hasThirdPoint)
{
_secondSegment.setPoints(ref secondPoint, ref thirdPoint);
}
}
// dont recalculate the fusedPoint for the last segment since there will be no third point to work with
if (hasThirdPoint)
{
var shouldFuseBottom = Vector2Ext.isTriangleCCW(firstPoint.position, secondPoint.position, thirdPoint.position);
_secondSegment.setFusedData(shouldFuseBottom, ref _firstSegment);
}
// special care needs to be take with the first segment since it has a different vert count
if (i == 0)
{
addFirstSegment(ref _firstSegment, ref _secondSegment, ref vertIndex);
}
else
{
addSegment(ref _firstSegment, ref vertIndex);
}
_lastSegment.cloneFrom(ref _firstSegment);
}
}