ゲーム戦艦の placeShips メソッドを書いています。ほとんどの場合は機能します...船を配置しようとしているときにエラー状態に遭遇した場合(ボードから外れたり、別の船がその場所にあるなど)、船の文字コードを.そうすべきではないことに気付くまで、スペースを空けてください。カスケードされた if ステートメントを使用しようとしましたが、この問題を解決する他の方法がわかりません。これがコードのスニペットです。5 つの異なる船がありますが、これはすべての文字が ~ に初期化された 10x10 配列に最初の船を配置するためのコードです。
int count=1;
while(count<=5){
start: {
if(count==1){
System.out.println("What row and column would you like to place your aircraft carrier?");
System.out.println("Row?");
int row1 = IO.readInt();
if(row1>9 || row1<0){
IO.reportBadInput();
break start;
}
System.out.println("Column?");
int column1 = IO.readInt();
if(column1>9 || column1<0){
IO.reportBadInput();
break start;
}
System.out.println("How would you like to orient your aircraft carrier? 1. Down, 2. Up, 3. Left, 4. Right");
int orientation = IO.readInt();
if(orientation==1){ //oriented down
for(int z=0; z<5; z++){ //places the aircraft carrier, DOWN
if((row1+z)>=board.length){
System.out.println("This will go off the board. You can't place your ship here! Try again.");
IO.reportBadInput();
break start;
}
else if(board[row1+z][column1]!='~'){
System.out.println("Oops! You can't place your ship there. Ship already in this location. Try again.");
IO.reportBadInput();
break start;
} //checks if there's anything else already in that space
else{
board[row1 + z][column1]= 'A';
}
}
}
if(orientation==2){ //oriented up
for(int z=0; z<5; z++){ //places the aircraft carrier, UP ORIENTATION
if((row1-z)<0){
System.out.println("This will go off the board. You can't place your ship here! Try again.");
IO.reportBadInput();
break start;
}
else if(board[row1-z][column1]!='~'){
System.out.println("Oops! You can't place your ship there. Ship already in this location. Try again.");
IO.reportBadInput();
break start;
} //checks if there's anything else already in that space
else{
board[row1 - z][column1]= 'A';
}
}
}
if(orientation==3){
for(int z=0; z<5; z++){ //places the aircraft carrier, LEFT ORIENTATION
if((column1-z)<0){
System.out.println("This will go off the board. You can't place your ship here! Try again.");
IO.reportBadInput();
break start;
}
else if(board[row1][column1-z]!='~'){
System.out.println("Oops! You can't place your ship there. Ship already in this location. Try again.");
IO.reportBadInput();
break start;
} //checks if there's anything else already in that space
else{
board[row1][column1-z]= 'A';
}
}
}
if(orientation==4){
for(int z=0; z<5; z++){ //places the aircraft carrier, RIGHT ORIENTATION
if((column1+z)>=9){
System.out.println("This will go off the board. You can't place your ship here! Try again.");
IO.reportBadInput();
break start;
}
else if(board[row1][column1+z]!='~'){
System.out.println("Oops! You can't place your ship there. Ship already in this location. Try again.");
IO.reportBadInput();
break start;
} //checks if there's anything else already in that space
else{
board[row1][column1+z]= 'A';
}
}
}
count++;
}