If statement 调用if语句，直到它'；完成了

如何调用if语句（或任何其他函数）而不再次调用它，直到它完成执行？我有一个update函数，它调用另一个函数（在另一个类中），但由于它执行每个更新，用户没有时间实际完成IF语句（IF语句依赖于用户输入），因此它不返回任何内容或只返回第一部分

代码（其中更新为）：

changeTile功能：

    public void changeTile(){
    boolean start = true;

    if(start){
        while(Mouse.next()){
        if(Mouse.getEventButton() == 0 && Mouse.getEventButtonState()){
                    //system uses tileTypes because player textures are tiletypes itself, so in the end we can let them swim by changing tiletypes
                    int xCoord = (int) Math.floor(Mouse.getX() / 64);
                    int yCoord = (int) Math.floor((HEIGHT - Mouse.getY() - 1) / 64);
                    tileType tile1 = map[xCoord][yCoord].getType();
                    System.out.println("first tile is set to:" + tile1);
                    start = false;
            }
        }
    }

    if(!start){
        while(Mouse.next()){
            if(Mouse.getEventButton() == 0 && Mouse.getEventButtonState()){
                int xCoord2 = (int) Math.floor(Mouse.getX() / 64);
                int yCoord2 = (int) Math.floor((HEIGHT - Mouse.getY() - 1) / 64);
                tileType tile2 = map[xCoord2][yCoord2].getType();
                System.out.println("second tile is set to:" + tile2);
            }
        }
    }

---

你能把问题说得更具体些吗？我想我不明白。在函数运行时，调用函数时没有再次运行它

    public void changeTile(){
    boolean start = true;

    if(start){
        while(Mouse.next()){
        if(Mouse.getEventButton() == 0 && Mouse.getEventButtonState()){
                    //system uses tileTypes because player textures are tiletypes itself, so in the end we can let them swim by changing tiletypes
                    int xCoord = (int) Math.floor(Mouse.getX() / 64);
                    int yCoord = (int) Math.floor((HEIGHT - Mouse.getY() - 1) / 64);
                    tileType tile1 = map[xCoord][yCoord].getType();
                    System.out.println("first tile is set to:" + tile1);
                    start = false;
            }
        }
    }

    if(!start){
        while(Mouse.next()){
            if(Mouse.getEventButton() == 0 && Mouse.getEventButtonState()){
                int xCoord2 = (int) Math.floor(Mouse.getX() / 64);
                int yCoord2 = (int) Math.floor((HEIGHT - Mouse.getY() - 1) / 64);
                tileType tile2 = map[xCoord2][yCoord2].getType();
                System.out.println("second tile is set to:" + tile2);
            }
        }
    }