block/castle/mapManager/values v2

public class block {
    public boolean isAvailable;
    public boolean isWalkable;
    public int x,y;
    public block(int x, int y, boolean isAvailable, boolean isWalkable){
        mapManager.mapNames[x][y]="farm";
        this.isAvailable = isAvailable;
        this.isWalkable = isWalkable;
        this.x = x;
        this.y = y;
    }
}
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public class castle extends block{
    public boolean isArmored;
    public int basedFoodProd;
    public int basedGoldProd;
    public int basedSienceProd;
    public int level;
    public int health;
    public int maxHealth;
    public float armor;
    public castle(int x, int y) {
        super(x, y, false, true);
        this.basedFoodProd = 1;
        this.basedGoldProd = 1;
        this.basedSienceProd = 0;
        this.isArmored = false;
        this.level = 1;
        this.health = 10;
        this.maxHealth = health;
        this.armor = (float) 1.0;
    }
    public void fix(){
        if(values.gold>=(maxHealth-health)*2){
            health = maxHealth;
            values.gold-=(maxHealth-health)*2;
        }
    }
    public void buildArmor(){
        if(!isArmored && values.gold > 20){
            isArmored = true;
            values.gold-=20;
        }
    }
    public void attacked(int damage){
        if(!isArmored){
            health -= damage*armor;
        }
        isArmored = false;
    }
    public void levelUp(){
        basedGoldProd += 1;
        basedFoodProd += 1;
        basedSienceProd += 2;
        level++;
        armor *= 0.9;
        maxHealth += maxHealth*0.2;
        health = maxHealth;
    }
    public boolean checkCastle(int x,int y){
        for (int i = -3; i <= 3; i++) {
            for (int j = -3; j <= 3; j++) {
                if (mapManager.mapNames[x+i][y+j] == "castle"){
                    if(mapManager.mapNames[x][y]!="castle" && mapManager.mapNames[x][y]!="mine" && mapManager.mapNames[x][y]!="farm"){
                        return true;
                    }else{
                        return false;
                    }
                }
            }
        }
        return false;
    }
    public void buildFarm(int x, int y){
        if(values.gold>=20 && checkCastle(x,y)){
            mapManager.mapNames[x][y]="farm";
            values.gold-=20;
            values.foodProd+=2;
        }
    }
    public void buildMine(int x, int y){
        if(values.gold>=25 && checkCastle(x,y)){
            mapManager.mapNames[x][y]="mine";
            values.gold-=25;
            values.goldProd+=3;
        }
    }
    public void destroyFarm(int x, int y){
        if(mapManager.mapNames[x][y]=="farm"){
            mapManager.mapNames[x][y]="block";
            values.gold+=10;
            values.foodProd-=2;
        }
    }
    public void destroyMine(int x,int y){
        if(mapManager.mapNames[x][y]=="mine") {
            mapManager.mapNames[x][y] = "block";
            values.gold += 10;
            values.goldProd -= 3;
        }
    }

}
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public class mapManager {
    public static String mapNames[][]= new String[10][10];

    public void fillNull(){
        for (int i = 0; i < mapNames.length; i++) {
            for (int j = 0; j < mapNames[0].length; j++) {
                mapNames[i][j]="block";
            }
        }
    }

}

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public class values {
    public static int gold = 50;
    public static int food = 50;
    public static int science = 0;
    public static int goldProd = 0;
    public static int foodProd = 0;
}