feat(scripts): computeLpos / computeContentSize - 锚点转换公式（实测验证）

2026-09-02 08:09:15 +08:00
parent b7c002d6f3
commit 7f0bd17b9e
2 changed files with 93 additions and 0 deletions
@@ -53,3 +53,46 @@ export function readLayerXml(path) {

  return { layerId, layerName, spirits };
 }
+
+/**
+ * 锚点转换: 原坐标系 (left-top, 1280×720 绝对) → Cocos 中心锚点 + Y-up.
+ *
+ * 公式 (实测验证 2026-09-02, Login_Layer 渠道logo + 游客登录双节点 _lpos 匹配):
+ *   cocos_lpos.x = original_X + original_W/2 - 640    # 1280/2
+ *   cocos_lpos.y = 360 - (original_Y + original_H/2)   # Y-up 翻转 + 720/2
+ *
+ * @param {{ x?: string, y?: string, w?: string, h?: string }} spirit
+ * @returns {{ x: number, y: number, z: 0 }}
+ */
+export function computeLpos(spirit) {
+  const x = parseFloat(spirit.x || '0');
+  const y = parseFloat(spirit.y || '0');
+  const w = parseFloat(spirit.w || '0');
+  const h = parseFloat(spirit.h || '0');
+  // 锚点转换：原 X/Y 是左上角（1280×720 绝对坐标）→ Cocos 中心锚点
+  return {
+    x: x + w / 2 - 640,            // 原坐标系半宽 1280/2
+    y: 360 - (y + h / 2),          // Y-up 翻转 + 半高 720/2
+    z: 0,
+  };
+}
+
+/**
+ * 计算 Spirit 的 contentSize (Cocos UI 节点尺寸).
+ *
+ * 数据源权威: SizeCalcMode 缺失视作 0 (直接读 Width/Height); 非 0 抛错,
+ * 由上游显式决定是否逆向 gameabc.min.js (Task 5 范围, 本任务不支持).
+ *
+ * @param {{ w?: string, h?: string, sizeCalcMode?: string, id?: string, name?: string }} spirit
+ * @returns {{ width: number, height: number }}
+ */
+export function computeContentSize(spirit) {
+  const sizeCalcMode = parseInt(spirit.sizeCalcMode || '0', 10);
+  if (sizeCalcMode !== 0) {
+    throw new Error(`SizeCalcMode=${sizeCalcMode} not yet supported for Spirit ${spirit.id} (${spirit.name}) - reverse gameabc.min.js first (Task 5)`);
+  }
+  return {
+    width: parseFloat(spirit.w || '0'),
+    height: parseFloat(spirit.h || '0'),
+  };
+}