update:优化vip飞行特效

src/components/BowShotEffect.vue

@@ -22,6 +22,14 @@ const props = defineProps({
     type: Number,
     default: 0,
   },
+  targetLeft: {
+    type: Number,
+    default: 0,
+  },
+  targetTop: {
+    type: Number,
+    default: 0,
+  },
   hitOffsetPx: {
     type: Number,
     default: 0,
@@ -40,6 +48,8 @@ let timers = [];
 const isActive = computed(() => phase.value !== "idle");
 const ARROW_IMPACT_MS = 340;
 const COMPLETE_FALLBACK_MS = 980;
+// 箭头尖端统一从屏幕中下区域出发，箭身自然延伸到屏幕底部之外。
+const SHOT_START_VIEWPORT_Y_RATIO = 0.82;
 
 const safeTargetRadius = computed(() => {
   const radius = Number(props.targetRadius);
@@ -49,12 +59,33 @@ const safeTargetRadius = computed(() => {
 const safeTargetSize = computed(() => {
   const width = Number(props.targetWidth);
   const height = Number(props.targetHeight);
+  const left = Number(props.targetLeft);
+  const top = Number(props.targetTop);
   return {
     width: Number.isFinite(width) && width > 0 ? width : 0,
     height: Number.isFinite(height) && height > 0 ? height : 0,
+    left: Number.isFinite(left) ? left : 0,
+    top: Number.isFinite(top) ? top : 0,
   };
 });
 
+function getWindowSize() {
+  try {
+    const info =
+      typeof uni.getWindowInfo === "function"
+        ? uni.getWindowInfo()
+        : uni.getSystemInfoSync();
+    const width = Number(info?.windowWidth);
+    const height = Number(info?.windowHeight);
+    return {
+      width: Number.isFinite(width) && width > 0 ? width : 0,
+      height: Number.isFinite(height) && height > 0 ? height : 0,
+    };
+  } catch {
+    return { width: 0, height: 0 };
+  }
+}
+
 function hasShotPoint(shot) {
   const x = Number(shot?.x);
   const y = Number(shot?.y);
@@ -105,23 +136,35 @@ const hitPercent = computed(() => {
   };
 });
 
-const arrowAngle = computed(() => {
+const flightPath = computed(() => {
   const size = safeTargetSize.value;
-  if (!size.width || !size.height) {
-    const dx = hitPercent.value.left - 50;
-    const dy = 114 - hitPercent.value.top;
-    const fallbackAngle = Math.atan2(dx, dy || 1) * (180 / Math.PI);
-    return Math.max(-18, Math.min(18, fallbackAngle));
-  }
+  const windowSize = getWindowSize();
 
-  const startX = size.width * 0.5;
-  const startY = size.height * 1.14;
-  const endX = size.width * (hitPercent.value.left / 100) + hitOffset.value.x;
-  const endY = size.height * (hitPercent.value.top / 100) + hitOffset.value.y;
+  const hasScreenCoordinates =
+    size.width > 0 &&
+    size.height > 0 &&
+    windowSize.width > 0 &&
+    windowSize.height > 0;
+  const startX = hasScreenCoordinates
+    ? windowSize.width * 0.5 - size.left
+    : size.width * 0.5;
+  const startY = hasScreenCoordinates
+    ? windowSize.height * SHOT_START_VIEWPORT_Y_RATIO - size.top
+    : size.height * 1.14;
+  const endX =
+    size.width * (hitPercent.value.left / 100) + hitOffset.value.x;
+  const endY =
+    size.height * (hitPercent.value.top / 100) + hitOffset.value.y;
   const dx = endX - startX;
-  const dy = startY - endY;
-  const angle = Math.atan2(dx, dy || 1) * (180 / Math.PI);
-  return Math.max(-18, Math.min(18, angle));
+  const dy = endY - startY;
+
+  return {
+    startX,
+    startY,
+    translateX: dx,
+    translateY: dy,
+    angle: Math.atan2(dx, -dy) * (180 / Math.PI),
+  };
 });
 
 function formatPxOffset(value) {
@@ -148,22 +191,21 @@ function getTargetTranslate(percent) {
 
 const arrowMoveStyle = computed(() => {
   const size = safeTargetSize.value;
+  const path = flightPath.value;
   let x = getTargetTranslate(hitPercent.value.left - 50);
   let y = getTargetTranslate(hitPercent.value.top - 114);
 
   if (size.width && size.height) {
-    const startX = size.width * 0.5;
-    const startY = size.height * 1.14;
-    const endX = size.width * (hitPercent.value.left / 100) + hitOffset.value.x;
-    const endY = size.height * (hitPercent.value.top / 100) + hitOffset.value.y;
-    x = `${endX - startX}px`;
-    y = `${endY - startY}px`;
+    x = `${path.translateX}px`;
+    y = `${path.translateY}px`;
   }
 
   return {
+    "--shot-start-x": size.width ? `${path.startX}px` : "50%",
+    "--shot-start-y": size.height ? `${path.startY}px` : "114%",
     "--shot-tx": x,
     "--shot-ty": y,
-    "--shot-angle": `${arrowAngle.value}deg`,
+    "--shot-angle": `${path.angle}deg`,
   };
 });
 
@@ -286,8 +328,8 @@ onBeforeUnmount(() => {
 
 .shot-arrow-track {
   position: absolute;
-  left: 50%;
-  top: 114%;
+  left: var(--shot-start-x);
+  top: var(--shot-start-y);
   width: 0;
   height: 0;
   opacity: 0;