From df12f87b47f9811e6ed2cf1aa15031576d8ed7dc Mon Sep 17 00:00:00 2001
From: DavivaD <davivad@wp.pl>
Date: Mon, 22 May 2017 10:01:36 +0100
Subject: [PATCH] Implement damage alarm (#916)

Implements part of #320
---
 src/sound/sound_type.cpp    |  3 ++-
 src/sound/sound_type.h      |  1 +
 src/ui/object_interface.cpp | 22 ++++++++++++++++++++--
 3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/src/sound/sound_type.cpp b/src/sound/sound_type.cpp
index 5eb4c53e..964782d2 100644
--- a/src/sound/sound_type.cpp
+++ b/src/sound/sound_type.cpp
@@ -109,7 +109,8 @@ const std::unordered_map<std::string, SoundType> SOUND_STRINGS =
     {"mushroom", SOUND_MUSHROOM},
     {"firep", SOUND_FIREp},
     {"explog1", SOUND_EXPLOg1},
-    {"explog2", SOUND_EXPLOg2}
+    {"explog2", SOUND_EXPLOg2},
+    {"alarms", SOUND_ALARMs}
 };
 
 } // anonymous namespace
diff --git a/src/sound/sound_type.h b/src/sound/sound_type.h
index 360708dd..6985622f 100644
--- a/src/sound/sound_type.h
+++ b/src/sound/sound_type.h
@@ -116,6 +116,7 @@ enum SoundType
   SOUND_EXPLOg1  = 79,  /*!< ShooterBots damaging objects. */
   SOUND_EXPLOg2  = 80,  /*!< OrgaShooterBots damaging objects. */
   SOUND_MOTORd  = 81,   /*!< Scribbler/ToyBot engine. */
+  SOUND_ALARMs  = 82,   /*!< Bot shield alarm. */
   SOUND_MAX             /** number of items in enum */
 };
 
diff --git a/src/ui/object_interface.cpp b/src/ui/object_interface.cpp
index a435c825..c819540a 100644
--- a/src/ui/object_interface.cpp
+++ b/src/ui/object_interface.cpp
@@ -1484,7 +1484,25 @@ void CObjectInterface::UpdateInterface(float rTime)
     if ( pg != nullptr )
     {
         assert(m_object->Implements(ObjectInterfaceType::Shielded));
-        pg->SetLevel(dynamic_cast<CShieldedObject*>(m_object)->GetShield());
+        icon = 3;  // orange/gray
+        float shield = dynamic_cast<CShieldedObject*>(m_object)->GetShield();
+
+        if ( shield < 0.4f && shield != 0.0f) // low but not zero?
+        {
+            if ( m_lastAlarmTime >= 0.8f )  // blinks?
+            {
+                shield = 1.0f;
+                icon = 2;  // red
+            }
+            if ( m_lastAlarmTime >= 1.0f )
+            {
+                m_sound->Play(SOUND_ALARMs, 0.5f);  // beep-beep
+                m_lastAlarmTime = 0.0f;
+            }
+        }
+        
+        pg->SetLevel(shield);
+        pg->SetIcon(icon);
     }
 
     pg = static_cast< CGauge* >(pw->SearchControl(EVENT_OBJECT_GRANGE));
@@ -1494,7 +1512,7 @@ void CObjectInterface::UpdateInterface(float rTime)
         icon = 2;  // blue/red
         range = dynamic_cast<CJetFlyingObject*>(m_object)->GetReactorRange();
 
-        if ( range < 0.2f && range != 0.0f && !m_physics->GetLand() )
+        if ( range < 0.2f && range != 0.0f && !m_physics->GetLand() ) // low but not zero/landed?
         {
             if ( Math::Mod(m_time, 0.5f) >= 0.2f )  // blinks?
             {