Java – create an array of methods
•
Java
I'm designing a text - based adventure game for school progress I set each "level" as a class and each explorable area (node) as a method in the appropriate class
What's confusing is the code that moves from one node to another Because each node is connected to up to four other nodes, I have to repeat a very similar block of code in each method
What I like to do is to include a series of methods at the beginning of each node, as shown below:
public static void zero()
{
... adjacentNodes[] = {one(),two(),three(),four()};
}
Then send the array to the generic method and send it to the correct node:
public static void move(...[] adjacentNodes,int index)
{
adjacentNodes[index];
}
I simplified my code, but that's a general idea Is that possible?
Solution
Whenever you think of pointer to function, you can convert to Java by using adapter mode (or variant) This will be:
public class Node {
...
public void goNorth() { ... }
public void goSouth() { ... }
public void goEast() { ... }
public void goWest() { ... }
interface MoveAction {
void move();
}
private MoveAction[] moveActions = new MoveAction[] {
new MoveAction() { public void move() { goNorth(); } },new MoveAction() { public void move() { goSouth(); } },new MoveAction() { public void move() { goEast(); } },new MoveAction() { public void move() { goWest(); } },};
public void move(int index) {
moveActions[i].move();
}
}
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