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Fix #2452: Per-object cooldown for under-attack radar alarm #2845

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Fix #2452: Per-object cooldown for under-attack radar alarm #2845

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2 changes: 1 addition & 1 deletion Core/GameEngine/Include/Common/GameDefines.h
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Original file line number Diff line number Diff line change
Expand Up @@ -64,7 +64,7 @@
#endif

#ifndef PRESERVE_RADAR_WARNING_SUPPRESSION
#define PRESERVE_RADAR_WARNING_SUPPRESSION (1)
#define PRESERVE_RADAR_WARNING_SUPPRESSION (0) // Per-object cooldown in tryUnderAttackEvent supersedes this map-wide suppression.

@Skyaero42 Skyaero42 Jun 30, 2026

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Disabling another fix is not a proper solution. If this fix superseeds the previous fix and not backwards compatibility is needed, than the old fix needs to be removed. If it needs to be backwards compatible, than this macro should not be changed and your fix should be in the same macro tags (#if !PRESERVE_RADAR_WARNING_SUPPRESSION)

#endif

#ifndef PRESERVE_STRUCTURE_STEALTH_DURING_REPAIR
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1 change: 1 addition & 0 deletions Core/GameEngine/Include/Common/Radar.h
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Expand Up @@ -117,6 +117,7 @@ class RadarObject : public MemoryPoolObject,
Object *m_object; ///< the object
RadarObject *m_next; ///< next radar object
Color m_color; ///< color to draw for this object on the radar
UnsignedInt m_lastUnderAttackAlarmFrame; ///< last logic frame this object's under-attack alarm fired

};

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13 changes: 13 additions & 0 deletions Core/GameEngine/Source/Common/System/Radar.cpp
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Expand Up @@ -100,6 +100,7 @@ RadarObject::RadarObject()
m_object = nullptr;
m_next = nullptr;
m_color = GameMakeColor( 255, 255, 255, 255 );
m_lastUnderAttackAlarmFrame = 0xFFFFFFFF;

}

Expand Down Expand Up @@ -1046,9 +1047,21 @@ void Radar::tryUnderAttackEvent( const Object *obj )
if( obj == nullptr )
return;

// Per-object cooldown: each unit can alarm at most once per suppression window.
// This prevents a single object (e.g. a supply plane) from re-triggering the alarm
// every time the global event window expires.
const UnsignedInt framesBetweenAlarms = LOGICFRAMES_PER_SECOND * 10;
UnsignedInt currentFrame = TheGameLogic->getFrame();
RadarObject *radarData = obj->friend_getRadarData();
if( radarData && currentFrame - radarData->m_lastUnderAttackAlarmFrame < framesBetweenAlarms )

@Skyaero42 Skyaero42 Jun 30, 2026

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m_lastUnderAttackAlarmFrame has the maximum value assigned (line 103). This if statement is therefore always true. Therefore line 1063 will never fire and m_lastUnderAttackAlarmFrame will never be reset.

return;

// try to create the event
Bool eventCreated = tryEvent( RADAR_EVENT_UNDER_ATTACK, obj->getPosition() );

if( eventCreated && radarData )
radarData->m_lastUnderAttackAlarmFrame = currentFrame;

// if event created, do some more feedback
if( eventCreated )
{
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