比较具有相同字段的不同对象的两个列表
本文关键字:列表 两个 字段 比较 对象 | 更新日期: 2023-09-27 18:19:15
我有一个
class Player
{
public Vector3 position;
public String name;
}
和
class Field
{
public Vector3 position;
public bool isTarget;
}
我有一个游戏,有3个玩家,10个领域和3个目标领域。为了获胜,用户应该将所有玩家放在目标场地上。有没有比较两个不同对象列表的好方法(List
或者我应该从
继承Player和Fieldclass BaseItem
{
public Vector3 position;
}
class Player : BaseItem
{
public String name;
}
和比较List<BaseItem>
?
var listPlayer = new List<Player>();
listPlayer.Add(new Player { position = new Vector3(1,0,0); name = "a"; }
listPlayer.Add(new Player { position = new Vector3(0,1,0); name = "b"; }
listPlayer.Add(new Player { position = new Vector3(0,0,1); name = "c"; }
var listFields = new List<Field>();
listFields.Add(new Field { position = new Vector3(1,0,0); isTarget = true;}
listFields.Add(new Field { position = new Vector3(0,1,0); isTarget = true;}
listFields.Add(new Field { position = new Vector3(0,0,1); isTarget = true;}
listFields.Add(new Field { position = new Vector3(1,1,0); }
listFields.Add(new Field { position = new Vector3(1,0,1); }
****
我如何运行所有的球员和领域,看看,如果每个球员有一个相应的领域(它应该有相等的位置和isttarget应该为真)?
解决方案:我想保留Aybe的答案作为解决方案,但我已经完成了算法,所以我想分享它,以防它会有用:
private void CheckIfWin()
{
foreach (var target in gameboardTargets)
if (!IsAnyPlayerOnTarget(target))
return;
MessageBox.Show(HandleMessage,"You made it!", "Hooray!", MessageBoxButtons.OK);
}
private bool IsAnyPlayerOnTarget(Field target)
{
foreach (var player in playersList)
if (target.GridPosition.Equals(player.GridPosition)) // can be replaced with BaseItem.ComparePosition()
return true;
return false;
}
不确定比较两个不同的东西是否是正确的方法。
你可以让这两个东西从一个基类派生:
internal class BoardEntity {
public Vector3 Position { get; set; }
}
internal class Player : BoardEntity {
public string Name { get; set; }
}
internal class Field : BoardEntity {
public bool IsTarget { get; set; }
}
现在又出现了其他东西:
- 你必须每次都将它们转换为基类,这会随着时间的推移而变得无聊
- 比较两种不同的东西是很奇怪的,即使它们有相同的属性
- 不鼓励比较
floats
,因为结果可能(将)错误
internal class BoardEntity {
public Vector3 Position { get; set; }
protected bool Equals(BoardEntity other) {
return Position.Equals(other.Position);
}
public override bool Equals(object obj) {
if (ReferenceEquals(null, obj)) return false;
if (ReferenceEquals(this, obj)) return true;
var other = obj as BoardEntity;
return other != null && Equals(other);
}
public override int GetHashCode() {
return Position.GetHashCode();
}
}
internal class MyClass {
public MyClass() {
var player = new Player();
var field = new Field();
BoardEntity boardEntity1 = player;
BoardEntity boardEntity2 = field;
bool b = boardEntity1.Equals(boardEntity2);
}
}
建议:
提供ComparePosition()
方法听起来更自然,因为我们转换为整数,比较将始终是正确的。
internal class BoardEntity {
public Vector3 Position { get; set; }
public bool ComparePosition(BoardEntity boardEntity) {
var v1 = new Vector3(boardEntity.Position.X, boardEntity.Position.Y, boardEntity.Position.Z);
var v2 = new Vector3(Position.X, Position.Y, Position.Z);
return v1.Equals(v2);
}
}
internal class MyClass {
public MyClass() {
var player = new Player();
var field = new Field();
bool comparePosition = player.ComparePosition(field);
}
}