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Intelligence.java
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Intelligence.java
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package org.snake.model;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class Intelligence {
Snake gameSnake;
Snake playerSnake;
Food food;
int leftRightBuffer = 0;
int upDownBuffer = 0;
public Intelligence(Snake gameSnake, Snake playerSnake, Food food) {
this.gameSnake = gameSnake;
this.playerSnake = playerSnake;
this.food = food;
}
public void manageGameSnake() {
Direction direction = makeDecision();
direction = avoidCollision(direction);
switch (direction) {
case UP:
gameSnake.turnUp();
break;
case RIGHT:
gameSnake.turnRight();
break;
case DOWN:
gameSnake.turnDown();
break;
case LEFT:
gameSnake.turnLeft();
break;
default:
break;
}
}
private boolean checkCollisionWithSnakes(Element element) {
return element.checkCollisionWithOthers(gameSnake.getBody())
|| element.checkCollisionWithOthers(playerSnake.getBody());
}
private Direction makeDecision() {
Direction snakeDirection = gameSnake.getDirection();
Element snakesHead = gameSnake.getHead();
double torDistanceToRight = Math.abs(food.getXcord() - snakesHead.getXcord());
double torDistanceToLeft = gameSnake.getWidth() - torDistanceToRight;
if (torDistanceToRight < torDistanceToLeft) {
if (food.getXcord() - snakesHead.getXcord() > 0) {
return Direction.RIGHT;
} else {
return Direction.LEFT;
}
} else if (torDistanceToRight > torDistanceToLeft) {
if (food.getXcord() - snakesHead.getXcord() > 0) {
return Direction.LEFT;
} else {
return Direction.RIGHT;
}
} else {
double torDistanceToUp = Math.abs(snakesHead.getYcord() - food.getYcord());
double torDistanceToDown = gameSnake.getHeight() - torDistanceToUp;
if (torDistanceToUp < torDistanceToDown) {
if (food.getYcord() - snakesHead.getYcord() > 0) {
return Direction.DOWN;
} else {
return Direction.UP;
}
} else if (torDistanceToUp > torDistanceToDown) {
if (food.getYcord() - snakesHead.getYcord() > 0) {
return Direction.UP;
} else {
return Direction.DOWN;
}
} else {
return snakeDirection;
}
}
}
private Direction avoidCollision(Direction direction) {
Element snakesHead = gameSnake.getHead();
Element newElement = new Element(
snakesHead.getXcord() + direction.getDirectionX(),
snakesHead.getYcord() + direction.getDirectionY()
);
if (checkCollisionWithSnakes(newElement)) {
List<Direction> spaces = findSpaces();
List<Direction> availableDirections = Arrays.asList(Direction.values());
for (Direction dir : spaces) {
if (Math.abs(availableDirections.indexOf(dir) -
availableDirections.indexOf(direction)) == 2) {
continue;
}
return dir;
}
}
return direction;
}
private List<Direction> findSpaces() {
List<Direction> fourSides = new ArrayList<>();
Element snakeHead = gameSnake.getHead();
Direction[] availableDirections = Direction.values();
for (int i = 0; i < 4; i++) {
Element elem = new Element(
snakeHead.getXcord() + availableDirections[i].getDirectionX(),
snakeHead.getYcord() + availableDirections[i].getDirectionY()
);
if (!checkCollisionWithSnakes(elem)) {
fourSides.add(availableDirections[i]);
}
}
return fourSides;
}
}