package astar

import "fmt"

// Node 节点结构
type Node struct {
	x, y       int32
	isWalkable bool // 是否可行走
	neighbors  map[*Node]int32
}

// NewNode 创建新节点
func NewNode(x, y int32, isWalkable bool) *Node {
	return &Node{
		x:          x,
		y:          y,
		isWalkable: isWalkable,
		neighbors:  make(map[*Node]int32),
	}
}

func (p *Node) AddNeighbor(node *Node, distance int32) {
	if node != nil && node.isWalkable {
		p.neighbors[node] = distance
	}
}

func (p *Node) X() int32 {
	return p.x
}

func (p *Node) Y() int32 {
	return p.y
}

func (p *Node) IsOdd() bool {
	return (p.x & 0x1) == 0x1
}

func (p *Node) IsEven() bool {
	return (p.x & 0x1) == 0x0
}

func (p *Node) String() string {
	return fmt.Sprintf("{%d, %d}", p.x, p.y)
}