将Node转换为Int []

Question

我是Java编程的新手，目前正在pacman Ai控制器上工作。我们获得了使用方法List(Node) getPillNodes的基本代码，该方法返回带药丸的所有节点索引。所以我想做的就是告诉pacman跟踪有药丸的节点，但是我唯一的想法是这样做：

int[] pills=game.getPillNodes();
int[] powerPills=game.getPowerPillIndices();        

ArrayList<Integer> targets=new ArrayList<Integer>();

for(int i=0;i<pills.length;i++) //check which pills are available           
if(game.checkPill(i))
targets.add(pills[i]); etc...

我将如何将List转换为int []，以便可以使用上面编写的代码。请问任何需要澄清的问题。如果错过任何事情，我深表歉意。在此先感谢！

这是节点类

int getX();
int getY();

boolean isPill();
boolean isPowerPill();
boolean isJunction();

int getNumNeighbors();
Node getNeighbor(int inDirection);
List<Node> getNeighbors();
int getPathDistance(Node to);

static int getReverse(int direction)
{
    switch(direction)
    {
        case 0: return 2;
        case 1: return 3;
        case 2: return 0;
        case 3: return 1;
    }
    return 4;
}

}

这是迷宫课：

String getName（）; //返回迷宫的名称

Node getInitialAttackerPosition();   // Returns the starting position of the hero
Node getInitialDefendersPosition();  // Returns the starting position of the defenders (i.e., first node AFTER leaving the lair)
Node getNode(int x, int y);          // Get Node from X,Y position

int getNumberPills();                // Total number of pills in the maze
int getNumberPowerPills();           // Total number of power pills in the maze
int getNumberOfNodes();              // Total number of nodes in the graph (i.e., those with pills, power pills and those that are empty)

List<Node> getPillNodes();           // Returns the indices to all the nodes that have pills
List<Node> getPowerPillNodes();      // Returns all the nodes that have power pills
List<Node> getJunctionNodes();       // Returns the indices to all the nodes that are junctions