c# - When i edit one instance's variable values the others another instance's change too -


i have 2 classes, 'unit' , 'tile'. both of these have 'location' class in them so...

class unit {     // add stats name , health, speed , strength.     public stats stats = new stats();      // add location coordinates     public location location = new location(); }  public class tile {     // add stats name , health, speed , strength.     public stats stats = new stats();      // represents ability move out of tile via either {north,east,south,west};     public list<bool> movementdirections = new list<bool>() { true, true, true, true };      // represents coorinates access tile.     public location location = new location(); }

ok so... you'll notice have 'stats' class on both. both 'unit' , 'tile' new instances , both have new instances of 'stats' , 'location' on them.

my issue have got small piece of code changes location of unit , it's acting strangely.

        static void move(tile tile,int[] coordschange,unit unit)     {         // unit player defined earlier in script new unit().         player.stats.name = "hendry";// check. doesn't change tile name         player.location.x = player.location.x + coordschange[0]; // these both change tile location also.         player.location.y = player.location.y + coordschange[1];     }

since new instance , changing of player stats isn't changing tile stats have no idea why location change player. have tested visa versa , same happens ... it's though location classes linked stats classes not despite no difference in them.

here classes btw.

public class location {     private int _x = 0;     private int _y = 0;      public int x     {         { return _x; }         set { _x = value;}     }      public int y     {         { return _y;}         set { _y = value; }     } }  public class stats {     public string name = "default";     public string classname = "default";     public int health = 10;     public int strength = 5;     public int defence = 5;     public int speed = 5;     public int intelligence = 5; }

any ideas appreciated.

thanks zorilya

the importance of encapsulation:

class unit {     // add stats name , health, speed , strength.     public stats stats { get; private set; }     // add location coordinates     public location location { get; private set; }      public unit()     {         location = new location();         stats = new stats();     }  }

same tile.

update

my theory before call of move have code assigning:

player.location = tile.location;

or

tile.location = player.location;

making location property private setter, cause compiler error such code.

update

public class location {     ...     code     ...      public void assign(location asource)     {         x = asource.x;         y = asource.y;     } }  tile.location.assign(player.location);

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