爱心型血条
准备一张红色爱心及灰色爱心的图片
给hearts添加布局
hg为灰色爱心，hr为红色爱心
为hearts添加代码
hearts.cs
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class hearts : MonoBehaviour {
public Transform heart0;public Transform heart1;public Transform heart2;private List<Transform> heartList;private int maxHeartNum = 3;private int heartNum = 3;void Start () {
heartList=new List<Transform>();heartList.Add(heart0);heartList.Add(heart1);heartList.Add(heart2);}void Update () {
if (Input.GetKeyDown (KeyCode.A)) {
if (heartNum > 0) {
heartNum -= 1;heartList[heartNum].GetChild(1).GetComponent<Image>().enabled=false;}}if (Input.GetKeyDown (KeyCode.D)) {
if (heartNum <maxHeartNum) {
heartList[heartNum].GetChild(1).GetComponent<Image>().enabled=true;heartNum += 1;}}}
}
绑定对象
效果
2d横版主角移动（刚体）
https://www.bilibili.com/video/av82865782?t=818
随便布置一个主角和两个地
给主角和地面添加Collider，给主角添加Rigidbody
主角添加脚本
using System.Collections;
using System.Collections.Generic;using UnityEngine;public class Player : MonoBehaviour {
public Rigidbody2D rb;public Collider2D coll;public float jumpforce, speed;public Transform groundCheck;public LayerMask ground; //碰撞体过滤 public bool isGround, isJump;bool jumpPressed;int jumpCount;void Start () {
rb = GetComponent<Rigidbody2D> ();coll = GetComponent<Collider2D> ();}void Update () {
if (Input.GetButtonDown ("Jump") && jumpCount > 0) {
jumpPressed = true;}}//每秒固定执行的操作，与设备无关private void FixedUpdate () {
isGround = Physics2D.OverlapCircle (groundCheck.position, 0.1f, ground); //判断是否在地面GroundMovement ();//SwitchAnim ();Jump ();}//根据输入控制水平方向的移动和以及方向变化void GroundMovement () {
float horizontalMove = Input.GetAxisRaw ("Horizontal"); //只有0 -1 1 三个数字rb.velocity = new Vector2 (horizontalMove * speed, rb.velocity.y);if (horizontalMove != 0) {
transform.localScale = new Vector3 (horizontalMove, 1, 1); //控制翻转}}void Jump () {
if (isGround) {
jumpCount = 2; //在地面的时候就恢复可跳跃次数isJump = false;}if (jumpPressed && isGround) {
isJump = true;rb.velocity = new Vector2 (rb.velocity.x, jumpforce);jumpCount--;jumpPressed = false; //每0.02秒检测按键是否松开}else if (jumpPressed && jumpCount > 0 && !isGround) {
rb.velocity = new Vector2 (rb.velocity.x, jumpforce);jumpCount--;jumpPressed = false;}}
}将地面设为land图层
为了防止主角因为碰撞导致旋转，可以勾选
效果
主角切换形态
根据上面的主角制作不同的4个prefab
适当修改collider的形状以及groundCheck的位置
放在Assets>Resources>Prefabs路径下
Player.cs中修改脚本
按下字母区上方数字键1234就会切换不同的形态
void Update () {
if (Input.GetButtonDown ("Jump") && jumpCount > 0) {
jumpPressed = true;}if (Input.GetKeyDown (KeyCode.Alpha1)) {
GameObject objPrefab = (GameObject) Resources.Load ("Prefabs/playerCat");Destroy (gameObject);Instantiate (objPrefab, transform.position, transform.rotation);}elseif (Input.GetKeyDown (KeyCode.Alpha2)) {
GameObject objPrefab = (GameObject) Resources.Load ("Prefabs/playerPanda");Destroy (gameObject);Instantiate (objPrefab, transform.position, transform.rotation);}elseif (Input.GetKeyDown (KeyCode.Alpha3)) {
GameObject objPrefab = (GameObject) Resources.Load ("Prefabs/playerPig");Destroy (gameObject);Instantiate (objPrefab, transform.position, transform.rotation);}elseif (Input.GetKeyDown (KeyCode.Alpha4)) {
GameObject objPrefab = (GameObject) Resources.Load ("Prefabs/playerRabbit");Destroy (gameObject);Instantiate (objPrefab, transform.position, transform.rotation);}}
效果
轮盘选择1
五个Image
ImageImageImageImageImage
排成两排两列，按顺时针分别编号0,1,2,3
将四个图像的透明度都调成150
Whell添加脚本
using System.Collections;
using System.Collections.Generic;using UnityEngine;
using UnityEngine.UI;public class Whell : MonoBehaviour {
public Transform cat;public Transform panda;public Transform pig;public Transform rabbit;private int chooseNum;private Vector3 startPosition;void Start () {
chooseNum = 1;}void Update () {
if(Input.GetKeyDown(KeyCode.LeftAlt)){
startPosition = Input.mousePosition;}if (Input.GetKey (KeyCode.LeftAlt)) {
float angle = Vector2.SignedAngle (new Vector3 (1, 0, 0), Input.mousePosition - startPosition);if (angle > 90 && angle < 180) {
chooseNum = 0;}else if (angle > 0 && angle < 90) {
chooseNum = 1;}else if (angle < 0 && angle > -90) {
chooseNum = 2;}else if (angle < -90 && angle > -180) {
chooseNum = 3;}Color color = new Color (150, 150, 150, 1);transform.GetChild (chooseNum).GetComponent<Image> ().color = color;for (int i = 0; i < transform.childCount; i++) {
if (i != chooseNum) {
transform.GetChild (i).GetComponent<Image> ().color = new Color (150, 150, 150, 125/255f);}}}if (Input.GetKeyUp (KeyCode.LeftAlt)) {
for (int i = 0; i < transform.childCount; i++) {
transform.GetChild (i).GetComponent<Image> ().color = new Color (150, 150, 150, 125/255f);}}}
}
原理是记录初始鼠标坐标，每次移动划一个向量，使用SignedAngle方法求该向量与x方向单位向量的角度
绑定属性
效果
轮盘选择2
现在将主角切换与轮盘结合起来
将轮盘做成预制体，放到该目录下
Player.cs中添加
void Update () {
if(Input.GetKeyDown(KeyCode.LeftAlt)){
GameObject whellPrefab = (GameObject) Resources.Load ("Prefabs/Whell");GameObject whell= Instantiate(whellPrefab);whell.transform.SetParent(GameObject.Find("Canvas").transform,false);}
}
再在Whell.cs中修改
void Start () {
startPosition = Input.mousePosition;
}
效果
