add ui::LoadingBar support to Progress actions (cocos2d#18748)

Just checked for the loading bar target and cast appropriately.

I made this edit in Github, but the source edit was from my old fork that I can't get to merge in tankorsmash/cocos2dx-mytracker@aac2a0b

cocos/2d/CCActionProgressTimer.cpp

@@ -26,13 +26,13 @@ THE SOFTWARE.
 ****************************************************************************/
 #include "2d/CCActionProgressTimer.h"
 #include "2d/CCProgressTimer.h"
+#include "ui/UILoadingBar.h"
 
 NS_CC_BEGIN
 
 #define kProgressTimerCast ProgressTimer*
 
 // implementation of ProgressTo
-
 ProgressTo* ProgressTo::create(float duration, float percent)
 {
     ProgressTo *progressTo = new (std::nothrow) ProgressTo();
@@ -41,7 +41,6 @@ ProgressTo* ProgressTo::create(float duration, float percent)
         progressTo->autorelease();
         return progressTo;
     }
-
     delete progressTo;
     return nullptr;
 }
@@ -73,12 +72,23 @@ ProgressTo* ProgressTo::reverse() const
 void ProgressTo::startWithTarget(Node *target)
 {
     ActionInterval::startWithTarget(target);
-    _from = ((kProgressTimerCast)(target))->getPercentage();
+
+    ui::LoadingBar* loading_bar = dynamic_cast<ui::LoadingBar*>(target);
+    if (loading_bar){
+        _from = loading_bar->getPercent();
+    } else {
+        _from = static_cast<ProgressTimer*>(target)->getPercentage();
+    };
 }
 
 void ProgressTo::update(float time)
 {
-    ((kProgressTimerCast)(_target))->setPercentage(_from + (_to - _from) * time);
+    ui::LoadingBar* loading_bar = dynamic_cast<ui::LoadingBar*>(_target);
+    if (loading_bar){
+        loading_bar->setPercent(_from + (_to - _from) * time);
+    } else {
+        static_cast<ProgressTimer*>(_target)->setPercentage(_from + (_to - _from) * time);
+    };
 }
 
 // implementation of ProgressFromTo
@@ -90,14 +100,14 @@ ProgressFromTo* ProgressFromTo::create(float duration, float fromPercentage, flo
         progressFromTo->autorelease();
         return progressFromTo;
     }
-    
+
     delete progressFromTo;
     return nullptr;
 }
 
 bool ProgressFromTo::initWithDuration(float duration, float fromPercentage, float toPercentage)
 {
-    if (ActionInterval::initWithDuration(duration))
+ if (ActionInterval::initWithDuration(duration))
     {
         _to = toPercentage;
         _from = fromPercentage;
@@ -127,7 +137,12 @@ void ProgressFromTo::startWithTarget(Node *target)
 
 void ProgressFromTo::update(float time)
 {
-    ((kProgressTimerCast)(_target))->setPercentage(_from + (_to - _from) * time);
+    ui::LoadingBar* loading_bar = dynamic_cast<ui::LoadingBar*>(_target);
+    if (loading_bar){
+        loading_bar->setPercent(_from + (_to - _from) * time);
+    } else {
+        static_cast<ProgressTimer*>(_target)->setPercentage(_from + (_to - _from) * time);
+    };
 }
 
 NS_CC_END