[Add] Health bar now shows only when character is being attacked.

src/libUnuk/Engine/Character.cpp

@@ -119,7 +119,9 @@ void Character::Render(void) {
     ApplySurface((int)x, (int)y, _texture, screen, &_sprites[directionFacing][_animationStage]);
   }
 
-  _healthBar.Draw();
+  if(_healthBarDuration.IsStarted() && (_healthBarDuration.GetTicks() < 5000)) {
+    _healthBar.Draw();
+  }
 }
 
 void Character::Update(void) {
@@ -142,6 +144,10 @@ void Character::Update(void) {
   _healthBar.SetProgress((float)_health / 100.0f);
 }
 
+void Character::OnAttack(void) {
+  _healthBarDuration.Start();
+}
+
 void Character::Move(void) {
   x += xVel;
   tileX = (int)(((x + (w / 2)) / TILE_WIDTH));

src/libUnuk/Engine/Character.h

@@ -45,6 +45,8 @@ public:
   void Render(void);
   void Update(void);
 
+  void OnAttack(void);
+
   inline void* operator new(size_t size) {
     return gMemManager.Allocate(size);
   }
@@ -101,6 +103,7 @@ protected:
   static const int ANIM_ATTACK       = 3;
 
   Bar _healthBar;
+  Timer _healthBarDuration;
 
 private:
   static const int ANIMATION_SPEED         = 200;

src/libUnuk/Engine/WorldManager.cpp

@@ -92,6 +92,7 @@ void WorldManager::OnPlayerAttack(Character* player) {
     }
 
     npc->SetHealth(npc->GetHealth() - 5);
+    npc->OnAttack();
 
     if(npc->GetHealth() <= 0) {
       i = _npcs.erase(i);