```
feat(Enemy): 添加敌人攻击动画速度控制功能 - 新增attackDuration属性用于控制完整攻击动作时长 - 实现攻击动画速度动态调整，支持自定义攻击持续时间 - 添加健康条显示组件到敌人类 - 增加物理材质配置优化碰撞效果 - 添加微信小游戏平台支持和适配 - 集成自适应性能包和微信小游戏SDK - 配置项目构建设置支持多平台发布 - 更新质量设置以适配不同目标平台 - 调整场景中物体位置和旋转参数 - 修复角色控制器材质引用问题 - 优化敌人AI移动和攻击逻辑 ```
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using UnityEngine;
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using UnityEngine.UI;
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public class WorldHealthBar : MonoBehaviour
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{
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// 最大生命值。
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[Min(1f)] public float maxHealth = 100f;
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// 当前生命值，范围会自动限制在 0 到 maxHealth 之间。
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[Min(0f)] public float currentHealth = 100f;
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// 血条相对于单位头顶的额外高度。
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[Min(0f)] public float heightOffset = 0.25f;
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// 所有单位使用统一的血条世界宽度。
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[Min(0.1f)] public float barWidth = 1.2f;
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// 血条边框颜色。
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public Color borderColor = new Color(0.03f, 0.03f, 0.03f, 0.95f);
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// 血条内部填充颜色。
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public Color fillColor = new Color(0.1f, 0.8f, 0.18f, 1f);
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// 血条 UI 的像素尺寸，实际显示大小由 worldWidth 控制。
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private const int PixelWidth = 100;
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private const int PixelHeight = 14;
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// 世界空间 Canvas，用来承载血条 UI。
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private Canvas canvas;
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// 血条整体的 RectTransform。
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private RectTransform barRect;
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// 绿色血量填充 Image。
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private Image fillImage;
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// 血条相对于单位的本地位置。
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private Vector3 localBarPosition;
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// 血条最终使用的世界宽度。
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private float worldWidth;
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// 所有血条共用的圆角 Sprite。
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private static Sprite roundedSprite;
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// 初始化血量和血条 UI。
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private void Awake()
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{
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maxHealth = Mathf.Max(1f, maxHealth);
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currentHealth = Mathf.Clamp(currentHealth, 0f, maxHealth);
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CalculateLayout();
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CreateBar();
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UpdateFill();
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}
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// 每帧让血条保持在单位头顶，并朝向主摄像机。
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private void LateUpdate()
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{
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if (barRect == null) return;
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barRect.localPosition = localBarPosition;
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// 优先使用场景中名称完全为 Main Camera 的摄像机。
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Camera camera = FindMainCamera();
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if (camera == null) return;
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canvas.worldCamera = camera;
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if (camera.gameObject.name == "Main Camera")
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{
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// 使用摄像机的上方向，保证血条在摄像机画面中保持水平。
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barRect.rotation = Quaternion.LookRotation(
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camera.transform.position - barRect.position,
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camera.transform.up);
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}
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else
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{
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// 找不到 Main Camera 时，保留原来的展示逻辑。
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barRect.rotation = Quaternion.LookRotation(
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camera.transform.position - barRect.position,
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Vector3.up);
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}
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}
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// 查找场景中名称为 Main Camera 的摄像机；找不到时回退到 Camera.main。
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private Camera FindMainCamera()
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{
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GameObject mainCameraObject = GameObject.Find("Main Camera");
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if (mainCameraObject != null)
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{
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Camera namedCamera = mainCameraObject.GetComponent<Camera>();
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if (namedCamera != null && namedCamera.isActiveAndEnabled)
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{
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return namedCamera;
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}
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}
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return Camera.main;
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}
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// 直接设置当前生命值，并刷新绿色填充比例。
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public void SetHealth(float value)
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{
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currentHealth = Mathf.Clamp(value, 0f, maxHealth);
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UpdateFill();
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}
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// 让单位受到伤害。
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public void TakeDamage(float amount) => SetHealth(currentHealth - amount);
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// 让单位恢复生命值。
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public void Heal(float amount) => SetHealth(currentHealth + amount);
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// 根据单位模型或碰撞体计算血条位置和宽度。
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private void CalculateLayout()
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{
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Bounds bounds = new Bounds(transform.position, new Vector3(1f, 2f, 1f));
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bool found = false;
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foreach (Renderer renderer in GetComponentsInChildren<Renderer>(true))
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{
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if (!found)
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{
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bounds = renderer.bounds;
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found = true;
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}
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else
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{
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bounds.Encapsulate(renderer.bounds);
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}
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}
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if (!found)
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{
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CharacterController controller = GetComponent<CharacterController>();
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if (controller != null) bounds = controller.bounds;
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}
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// 血条尺寸固定，不随单位模型大小变化；只根据模型顶部调整位置。
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worldWidth = barWidth;
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// 水平方向固定对齐单位根节点，只使用模型顶部计算血条高度。
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Vector3 top = transform.InverseTransformPoint(new Vector3(transform.position.x, bounds.max.y, transform.position.z));
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localBarPosition = new Vector3(0f, top.y + heightOffset, 0f);
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}
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// 创建世界空间 Canvas、边框和绿色血量填充。
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private void CreateBar()
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{
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GameObject barObject = new GameObject("WorldHealthBar", typeof(RectTransform), typeof(Canvas), typeof(CanvasScaler));
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barObject.transform.SetParent(transform, false);
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barObject.layer = gameObject.layer;
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canvas = barObject.GetComponent<Canvas>();
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canvas.renderMode = RenderMode.WorldSpace;
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canvas.sortingOrder = 100;
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barObject.GetComponent<CanvasScaler>().dynamicPixelsPerUnit = 10f;
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barRect = barObject.GetComponent<RectTransform>();
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barRect.sizeDelta = new Vector2(PixelWidth, PixelHeight);
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barRect.localScale = Vector3.one * (worldWidth / PixelWidth);
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barRect.localPosition = localBarPosition;
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Image background = CreateImage("Border", barObject.transform, RoundedSprite(), borderColor);
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SetFullRect(background.rectTransform);
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Image inner = CreateImage("Fill", barObject.transform, RoundedSprite(), fillColor);
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inner.rectTransform.anchorMin = Vector2.zero;
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inner.rectTransform.anchorMax = Vector2.one;
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inner.rectTransform.offsetMin = new Vector2(2f, 2f);
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inner.rectTransform.offsetMax = new Vector2(-2f, -2f);
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inner.type = Image.Type.Filled;
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inner.fillMethod = Image.FillMethod.Horizontal;
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inner.fillOrigin = 0;
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fillImage = inner;
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}
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// 创建一个用于边框或填充的 UI Image。
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private static Image CreateImage(string name, Transform parent, Sprite sprite, Color color)
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{
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GameObject imageObject = new GameObject(name, typeof(RectTransform), typeof(Image));
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imageObject.transform.SetParent(parent, false);
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Image image = imageObject.GetComponent<Image>();
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image.sprite = sprite;
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image.color = color;
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image.raycastTarget = false;
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return image;
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}
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// 让 UI 元素铺满父级 RectTransform。
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private static void SetFullRect(RectTransform rect)
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{
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rect.anchorMin = Vector2.zero;
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rect.anchorMax = Vector2.one;
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rect.offsetMin = Vector2.zero;
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rect.offsetMax = Vector2.zero;
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}
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// 根据当前生命值更新绿色填充比例。
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private void UpdateFill()
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{
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if (fillImage != null)
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{
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fillImage.fillAmount = Mathf.Clamp01(currentHealth / maxHealth);
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}
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}
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// 创建并缓存一个带圆角的白色 Sprite，供边框和填充复用。
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private static Sprite RoundedSprite()
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{
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if (roundedSprite != null) return roundedSprite;
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const int width = 64;
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const int height = 16;
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const float radius = 5f;
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Texture2D texture = new Texture2D(width, height, TextureFormat.RGBA32, false);
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texture.wrapMode = TextureWrapMode.Clamp;
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texture.filterMode = FilterMode.Bilinear;
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texture.hideFlags = HideFlags.HideAndDontSave;
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for (int y = 0; y < height; y++)
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{
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for (int x = 0; x < width; x++)
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{
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float dx = Mathf.Max(Mathf.Max(radius - x, 0f), x - (width - 1 - radius));
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float dy = Mathf.Max(Mathf.Max(radius - y, 0f), y - (height - 1 - radius));
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bool inside = dx * dx + dy * dy <= radius * radius;
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texture.SetPixel(x, y, inside ? Color.white : Color.clear);
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}
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}
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texture.Apply();
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roundedSprite = Sprite.Create(texture, new Rect(0, 0, width, height), new Vector2(0.5f, 0.5f), width);
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roundedSprite.hideFlags = HideFlags.HideAndDontSave;
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return roundedSprite;
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}
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}
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