修复过程props缺少的问题

debug/engine.js

@@ -1880,6 +1880,9 @@
         return exports;
     }
     function trimChar(str, char) {
+        if (!str || !char) {
+            return;
+        }
         while (true) {
             var len = str.length, from = 0, end = len;
             if (str[0] === char) {
@@ -2377,10 +2380,10 @@
                             case 'link':
                                 var linkedValue = this.resolveLinkedProp(value, key);
                                 if (linkedValue !== undefined) {
-                                    props[key] = undefined;
+                                    props[key] = linkedValue;
                                 }
                                 else {
-                                    props[key] = linkedValue;
+                                    props[key] = undefined;
                                 }
                                 break;
                             case 'static':
@@ -2407,6 +2410,9 @@
                             props[key] = findNodeByUUID(this._vm.globalContext.gameStage, uuid);
                         }
                     }
+                    else if (originProps[key] !== undefined) {
+                        props[key] = originProps[key];
+                    }
                     if (props[key] === undefined && propsConfig[key].hasOwnProperty('default')) {
                         props[key] = propsConfig[key]['default'];
                     }

src/zeroing/behavior-runtime/Process.ts

@@ -183,9 +183,9 @@ export class Process {
 						case 'link':
 							let linkedValue = this.resolveLinkedProp(value, key);
 							if (linkedValue !== undefined) {
-								props[key] = undefined;
-							}else{
 								props[key] = linkedValue;
+							}else{
+								props[key] = undefined;
 							}
 							break;
 						case 'static':
@@ -210,6 +210,8 @@ export class Process {
 					if (uuid) {
 						props[key] = findNodeByUUID(this._vm.globalContext.gameStage, uuid);
 					}
+				}else if(originProps[key] !== undefined){
+					props[key] = originProps[key];
 				}
 
 				if (props[key] === undefined && propsConfig[key].hasOwnProperty('default')) {

src/zeroing/utils/utils.ts

@@ -164,6 +164,9 @@ export function importUMDCode(code) {
 }
 
 export function trimChar(str: string, char: string) {
+	if (!str || !char) {
+		return;
+	}
 	while (true) {
 		let len = str.length, from = 0, end = len;
 		if (str[0] === char) {
@@ -194,7 +197,7 @@ export function findVariable(name: string, ...contexts) {
 	for (let context of contexts) {
 		if (context) {
 			result = context[name];
-			if(result !== undefined){
+			if (result !== undefined) {
 				break;
 			}
 		}