public virtual void Move(MoveEventArgs e)
{
if (e.distance == 0)
{
return;
}
lock (privateLock)
{
if (!this._movable)
{
return;
}
if ((DateTime.Now - lastMoveTime).TotalSeconds < 1 / _frameRate)
{
return;
}
MoveStart?.Invoke(this);
XYPosition previousPosition = _position;
_position = _position + new XYPosition(e.distance * Math.Cos(e.angle), e.distance * Math.Sin(e.angle));
Debug(this, "Move from " + previousPosition.ToString() + " angle : " + e.angle + " distance : " + e.distance + " aim : " + _position.ToString());
OnMove?.Invoke(this, e, previousPosition);
Debug(this, "Move result poition : " + this._position.ToString());
MoveComplete?.Invoke(this);
}
}
//检查childrenGameObject的位置是否合法
//目前只能检查边长为1的方块
//检查规则：任何方块的任何部分不能超出地图边界
//如果方块为可碰撞的，则方块不能与其他可碰撞方块有重叠部分。
public bool XYPositionIsLegal(XYPosition position, int objectWidth = 0, int objectHeight = 0, Layer?objectLayer = null)
{
DebugWithoutEndline(this, "Checking position : " + position.ToString() + " width : " + objectWidth + " height : " + objectHeight + " layer : " + objectLayer);
if (!XIsLegal(position.x, objectWidth) || !YIsLegal(position.y, objectHeight))
{
DebugWithoutID(this, "false");
return(false);
}
if (objectLayer != null && !_layerSet.ContainsKey(objectLayer))
{
throw new Exception("Does not contain layer");
}
for (int x = (int)position.x - 1; x <= (int)position.x + 1; x++)
{
for (int y = (int)position.y - 1; y <= (int)position.y + 1; y++)
{
if (!XIsLegal(x) || !YIsLegal(y))
{
continue;
}
if (objectLayer != null)
{
foreach (var layer in objectLayer.CollisionLayers.Keys)
{
if (!_grid[x, y].Layers.ContainsKey(layer))
{
continue;
}
foreach (var gameObject in _grid[x, y].Layers[layer].Keys)
{
if (Math.Abs(gameObject.Position.x - position.x) < 1 &&
Math.Abs(gameObject.Position.y - position.y) < 1)
{
DebugWithoutID(this, "false");
return(false);
}
}
}
}
}
}
DebugWithoutID(this, "true");
return(true);
}
//调整方块到合法位置
//目前只能调整边长为1的方块
//此函数内不可调用childrenGameObject的Position Setter，否则会触发死循环
//输入：一个GameObject（不一定是地图的子GameObject）
protected XYPosition CorrectPosition(XYPosition position, int objectWidth = 1, int objectHeight = 1, Layer?objectLayer = null)
{
Debug(this, "Correcting Position : " + position.ToString() + " width : " + objectWidth + " height : " + objectHeight + " layer : " + objectLayer);
if (XYPositionIsLegal(position, objectWidth, objectHeight, objectLayer))
{
return(position);
}
XYPosition newCenterPosition = position.GetMid();
if (newCenterPosition.x < 0.5)
{
newCenterPosition = new XYPosition(0.5, newCenterPosition.y);
}
else if (newCenterPosition.x > (double)this._width - 0.5)
{
newCenterPosition = new XYPosition((double)this._width - 0.5, newCenterPosition.y);
}
if (newCenterPosition.y < 0.5)
{
newCenterPosition = new XYPosition(newCenterPosition.x, 0.5);
}
else if (newCenterPosition.y > (double)this._height - 0.5)
{
newCenterPosition = new XYPosition(newCenterPosition.x, (double)this._height - 0.5);
}
if (XYPositionIsLegal(newCenterPosition, objectWidth, objectHeight, objectLayer))
{
return(newCenterPosition);
}
XYPosition testPosition = newCenterPosition;
for (int round = 1; round < Math.Max(this._width, this._height); round++)
{
//Debug(this,"round : " + round);
for (double ySearch = newCenterPosition.y - (double)round; ySearch <= newCenterPosition.y + (double)round + 0.1; ySearch += 2 * (double)round)
{
if (!YIsLegal(ySearch))
{
continue;
}
for (double xSearch = newCenterPosition.x - (double)round; xSearch <= newCenterPosition.x + (double)round + 0.1; xSearch++)
{
if (!XIsLegal(xSearch))
{
continue;
}
testPosition = new XYPosition(xSearch, ySearch);
if (XYPositionIsLegal(testPosition, objectWidth, objectHeight, objectLayer))
{
return(testPosition);
}
}
}
for (double xSearch = newCenterPosition.x - round; xSearch <= newCenterPosition.x + round + 0.1; xSearch += 2 * round)
{
if (!XIsLegal(xSearch))
{
continue;
}
for (double ySearch = newCenterPosition.y - (round - 1); ySearch <= newCenterPosition.y + (round - 1) + 0.1; ySearch++)
{
if (!YIsLegal(ySearch))
{
continue;
}
testPosition = new XYPosition(xSearch, ySearch);
if (XYPositionIsLegal(testPosition, objectWidth, objectHeight, objectLayer))
{
return(testPosition);
}
}
}
}
return(new XYPosition(0, 0));//找不到合法位置，返回无效值
}
protected override void OnChildrenPositionChanged(GameObject childrenGameObject, XYPosition previousPosition, XYPosition targetPosition)
{
Debug(this, "Children object " + childrenGameObject.ID + " position change. from : " + previousPosition.ToString() + " aim : " + targetPosition.ToString());
//base.OnChildrenPositionChanged(childrenGameObject, e, out eOut);
if (XIsLegal((int)previousPosition.x) && YIsLegal((int)previousPosition.y))
{
this._grid[(int)previousPosition.x, (int)previousPosition.y].DeleteGameObject(childrenGameObject);//如果需要把childrenGameObject从Grid上拿掉且可以拿掉
}
childrenGameObject._position = CorrectPosition(targetPosition, childrenGameObject.Width, childrenGameObject.Height, childrenGameObject.Layer);
_grid[(int)childrenGameObject.Position.x, (int)childrenGameObject.Position.y].AddGameObject(childrenGameObject);
TryToTrigger(childrenGameObject);
}