//搜索区域内的 BattleUnit
public ArrayList SearchObject(SceneShapeRect shape, int searchType, bool ignoreDead = true)
{
ArrayList objs = new ArrayList();
PoolSlot slot = mObjPool.UsedList();
while (slot != null)
{
ObjectBase unit = slot.Content as ObjectBase;
if (unit == null)
{
slot = slot.NextSlot;
continue;
}
if (!ObjectType.IsCanSearch(searchType, unit.Type))
{
slot = slot.NextSlot;
continue;
}
Vector3 pos = unit.GetPosition();
if (shape.contains(new Vector2(pos.x, pos.z)))
{
objs.Add(unit);
}
slot = slot.NextSlot;
}
if (!ignoreDead)
{
for (int i = 0; i < mWaitDestoryObjects.Count; ++i)
{
ObjectBase obj = mWaitDestoryObjects[i];
if (obj == null)
{
continue;
}
if (!ObjectType.IsCanSearch(searchType, obj.Type))
{
continue;
}
Vector3 pos = obj.GetPosition();
if (shape.contains(new Vector2(pos.x, pos.z)))
{
objs.Add(obj);
}
}
}
return(objs);
}
// 矩形与多边形重叠(相交或包含)
static public bool overlap(SceneShapeRect rect, SceneShapePolygon polygon)
{
// 矩形有顶点在多边形内 一定相交
if (polygon.contains(rect.leftTop()))
{
return(true);
}
if (polygon.contains(rect.rightTop()))
{
return(true);
}
if (polygon.contains(rect.rightBottom()))
{
return(true);
}
if (polygon.contains(rect.leftBottom()))
{
return(true);
}
for (int i = 0; i < polygon.mPts.Count; ++i)
{
Vector2 pt1 = polygon.mPts[i];
Vector2 pt2 = polygon.mPts[((i + 1) % polygon.mPts.Count)];
// 多边形有顶点在矩形内 一定相交
if (rect.contains(pt1))
{
return(true);
}
// 多边形与矩形有边相交 两图形一定相交
if (Utility.isSegmentIntersect(pt1, pt2, rect.leftTop(), rect.rightTop()))
{
return(true);
}
if (Utility.isSegmentIntersect(pt1, pt2, rect.rightTop(), rect.rightBottom()))
{
return(true);
}
if (Utility.isSegmentIntersect(pt1, pt2, rect.rightBottom(), rect.leftBottom()))
{
return(true);
}
if (Utility.isSegmentIntersect(pt1, pt2, rect.leftBottom(), rect.leftTop()))
{
return(true);
}
}
return(false);
}
// 圆与矩形重叠(相交或包含)
static public bool overlap(SceneShapeRound round, SceneShapeRect rect)
{
if (rect.contains(round.mCenter))
{
return(true);
}
if (round.contains(new Vector2(rect.mLeft, rect.mBottom)) ||
round.contains(new Vector2(rect.mLeft, rect.mTop)) ||
round.contains(new Vector2(rect.mRight, rect.mBottom)) ||
round.contains(new Vector2(rect.mRight, rect.mTop)))
{
return(true);
}
float x = rect.mLeft - round.mCenter.x;
if (Mathf.Abs(x) > round.mRadius)
{
return(false);
}
if (rect.contains(new Vector2(round.mCenter.x + x, round.mCenter.y)))
{
return(true);
}
x = rect.mRight - round.mCenter.x;
if (Mathf.Abs(x) > round.mRadius)
{
return(false);
}
if (rect.contains(new Vector2(round.mCenter.x + x, round.mCenter.y)))
{
return(true);
}
x = rect.mBottom - round.mCenter.y;
if (Mathf.Abs(x) > round.mRadius)
{
return(false);
}
if (rect.contains(new Vector2(round.mCenter.x, round.mCenter.y + x)))
{
return(true);
}
x = rect.mTop - round.mCenter.y;
if (Mathf.Abs(x) > round.mRadius)
{
return(false);
}
if (rect.contains(new Vector2(round.mCenter.x, round.mCenter.y + x)))
{
return(true);
}
return(false);
}