tk2d的tilemap demo的脚本研究

 tilemap的demo脚本，大概注释一下

tk2dTileMapDemoPlayer.cs主要是控制玩家的行动和检测金币的碰撞，及时处理文字。

using UnityEngine;using System.Collections;public class tk2dTileMapDemoPlayer : MonoBehaviour {public tk2dTextMesh textMesh;//得分public tk2dTextMesh textMeshLabel;//scoreVector3 textMeshOffset;//装B，不用附属关系，手动保存偏移量，用来设置坐标bool textInitialized = false;public float addForceLimit = 1.0f;public float amount = 500.0f;public float torque = 50;tk2dSprite sprite;int score = 0;float forceWait = 0;float moveX = 0.0f;bool AllowAddForce { get { return forceWait < 0.0f; } }void Awake() {sprite = GetComponent<tk2dSprite>();if (textMesh == null || textMesh.transform.parent != transform) {Debug.LogError("Text mesh must be assigned and parented to player.");enabled = false;}textMeshOffset = textMesh.transform.position - transform.position;textMesh.transform.parent = null;//上面这几行就是装B，它一定要确保textmesh的父物体是玩家，然后保存textmesh和player坐标的偏移量后，把textmesh的父物体设置为空。textMeshLabel.text = "instructions";textMeshLabel.Commit();if (Application.platform == RuntimePlatform.WindowsEditor || Application.platform == RuntimePlatform.WindowsPlayer || Application.platform == RuntimePlatform.WindowsWebPlayer ||Application.platform == RuntimePlatform.OSXEditor || Application.platform == RuntimePlatform.OSXPlayer || Application.platform == RuntimePlatform.OSXWebPlayer || Application.platform == RuntimePlatform.OSXDashboardPlayer) {textMesh.text = "LEFT ARROW / RIGHT ARROW";}else {textMesh.text = "TAP LEFT / RIGHT SIDE OF SCREEN";}textMesh.Commit();//上面几行是设置提示信息Application.targetFrameRate = 60;}void Update() {forceWait -= Time.deltaTime;//根据是否等待状态设置精灵的图像，绿色和红色string spriteName = AllowAddForce ? "player" : "player_disabled";if (sprite.CurrentSprite.name != spriteName) {sprite.SetSprite(spriteName);}if (AllowAddForce) {float x = 0;if (Input.GetKeyDown(KeyCode.RightArrow)) x = 1;else if (Input.GetKeyDown(KeyCode.LeftArrow)) x = -1;for (int i = 0; i < Input.touchCount; ++i) {if (Input.touches[i].phase == TouchPhase.Began) {x = Mathf.Sign(Input.touches[i].position.x - Screen.width * 0.5f);break;}}if (x != 0) {// make sure text meshes are changed on first button press / touch//这里是按下控制键后，消去提示信息，只执行一次。if (!textInitialized) {textMeshLabel.text = "score";textMeshLabel.Commit();textMesh.text = "0";textMesh.Commit();textInitialized = true;}// The actual applying of force is deferred to the next FixedUpdate for predictable// physics behaviourmoveX = x;}}textMesh.transform.position = transform.position + textMeshOffset;}//处理Rigidbody时，需要用FixedUpdate代替Updatevoid FixedUpdate () {if (AllowAddForce && moveX != 0) {forceWait = addForceLimit;rigidbody.AddForce(new Vector3(moveX * amount, amount, 0) * Time.deltaTime, ForceMode.Impulse);//施加力rigidbody.AddTorque(new Vector3(0,0,-moveX * torque) * Time.deltaTime, ForceMode.Impulse);//施加力矩，使player绕z轴旋转。moveX = 0;}}void OnTriggerEnter(Collider other) {Destroy( other.gameObject );score++;textMesh.text = score.ToString();textMesh.Commit();}}

tk2dTileMapDemoFollowCam.cs主要是跟随玩家，并达到平滑缩放的效果

using UnityEngine;using System.Collections;public class tk2dTileMapDemoFollowCam : MonoBehaviour {tk2dCamera cam;public Transform target;public float followSpeed = 1.0f;public float minZoomSpeed = 20.0f;public float maxZoomSpeed = 40.0f;public float maxZoomFactor = 0.6f;void Awake() {cam = GetComponent<tk2dCamera>();}void FixedUpdate() {Vector3 start = transform.position;//摄像头坐标向玩家坐标移动Vector3 end = Vector3.MoveTowards(start, target.position, followSpeed * Time.deltaTime);end.z = start.z;transform.position = end;if (target.rigidbody != null && cam != null) {//根据player的速度向量，生成一个0~1之间的因子，用线性插值的方法确定缩放率，达到平滑过渡视野的效果，MoveTowards效果实际上和 Mathf.Lerp相同。float spd = target.rigidbody.velocity.magnitude;float scl = Mathf.Clamp01((spd - minZoomSpeed) / (maxZoomSpeed - minZoomSpeed));float targetZoomFactor = Mathf.Lerp(1, maxZoomFactor, scl);cam.ZoomFactor = Mathf.MoveTowards(cam.ZoomFactor, targetZoomFactor, 0.2f * Time.deltaTime);}}}

tk2dTileMapDemoCoin.cs就是金币不在摄像头视野时不工作，提高效率。

通过这三个脚本，我大概学习了player的行为控制，之前我都是直接改transform，导致刚体之间可以穿过；摄像头平常我也只是简单的用lookat来实现跟随，当然这看情况。在rpg游戏中都是这样普通跟随，比如dnf的城镇移动和副本移动，只有在特殊的镜头才会缩放。在太空游戏中，我就觉得缩放效果会更好一点，飞船加速时预览更大的地图，游览星际。