Linedef type 313

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Linedef type 313, No More Enemies – Once, is a type of linedef executor trigger which activates any linedef executor in the control sector once no more enemies (bosses included) exist within a specified area. The linedef executor will trigger only the first time, and then will not be triggered again until the map is reloaded. This effect is useful for creating areas where the player has to destroy all enemies to move on.


This trigger uses invisible, intangible FOFs (linedef type 223) to specify the area that is checked for enemies; it is only activated when no more Objects with the flag MF_ENEMY or MF_BOSS exist inside these FOFs.

Create a control sector outside of your map and give as many linedefs as you wish linedef type 223, and tag each one to a target sector you want to be scanned for the presence of enemies. Give this control sector an unused tag. Next, create another control sector and give one of its linedefs linedef type 313. Give this linedef the same tag as the control sector for the invisible, intangible FOFs. Any linedef executor effect you would like to be triggered should be applied to other linedefs on the control sector with linedef type 313. The game will go through the linedefs of the FOF control sector, checking inside the areas occupied by the FOFs to see if any enemies exist. The floor height and ceiling height of the FOF control sector indicate the floor and ceiling heights of the FOFs. If no enemies exist in any of the FOF areas, this linedef executor is run once.


Example file: ex_ld313_trigger_nomoreenemiesonce.wad (MAP01) 
  • Play this map in Single Player mode.
How to use
  • You may load this file into your favorite map editor, such as Zone Builder. Select MAP01 as the map to load.
  • You may also load this file in the game:
    1. Save ex_ld313_trigger_nomoreenemiesonce.wad into the addons folder of your SRB2 directory.
    2. Start SRB2, go to the Addons menu, and then select ex_ld313_trigger_nomoreenemiesonce.wad.
    3. Start the game in Single Player mode.
    4. Press the Console button (~), and type in the command MAP MAP01 to access the example map.
  • When you load this file in the game, it replaces Greenflower Zone Act 1.

  Linedef typesLinedef executors [view]

ContinuousEach TimeOnce • Ring Count (ContinuousOnce) • Character Ability (ContinuousEach TimeOnce) • Race Only – Once • CTF Red Team (ContinuousEach Time) • CTF Blue Team (ContinuousEach Time) • No More Enemies – Once • Number of Pushables (ContinuousOnce) • Condition Set Trigger (ContinuousOnce) • Unlockable (ContinuousOnce) • Trigger After X Calls (ContinuousEach Time) • NiGHTSerize (Each TimeOnce) • De-NiGHTSerize (Each TimeOnce) • NiGHTS Lap (Each TimeOnce) • Ideya Capture Touch (Each TimeOnce) • Player Skin (ContinuousEach TimeOnce) • Object Dye (ContinuousEach TimeOnce) • Level Load

Set Tagged Sector's Floor Height/TextureSet Tagged Sector's Ceiling Height/TextureSet Tagged Sector's Light LevelChange Tagged Sectors' TagChange Front Sector's TagStart Adjustable Flickering LightStart Adjustable Pulsating LightStart Adjustable Blinking Light (unsynchronized)Start Adjustable Blinking Light (synchronized)Fade Light LevelStop Lighting EffectChange Plane Scroller Direction
Plane movement:
Move Tagged Sector's FloorMove Tagged Sector's CeilingMove Floor According to Front Texture OffsetsMove Ceiling According to Front Texture OffsetsStop Plane MovementStart Platform MovementCrush Ceiling OnceCrush Floor OnceCrush Ceiling and Floor Once
TeleporterChange Object StateStop ObjectAward ScoreEnable/Disable 2D ModeEnable/Disable Gravity FlipAward Power-UpDisable Player ControlChange Object SizeChange Object Type StateEnable Bosses with ParameterTrack Object's AngleStop Tracking Object's AngleAward RingsSpawn ObjectStop Timer/Exit Stage in Record AttackDye ObjectTrigger Egg Capsule
Change MusicPlay Sound EffectRun ScriptSwitch to Cut-Away ViewChange SkyChange WeatherShatter FOFChange Tagged Linedef's TexturesStart Metal Sonic RaceCondition Set TriggerCall Lua FunctionEarthquakeMake FOF Disappear/ReappearMake FOF CrumbleChange Tagged Sector's ColormapChange SkyboxExecute Linedef Executor (from Tag)Execute Linedef Executor (Random Range)Set FOF TranslucencyFade FOFStop Fading FOFFade Tagged Sector's ColormapStop Fading Tagged Sector's ColormapControl Text Prompt
Door SlideDoor SwingMoveMove, OverrideRotate RightRotate Right, OverrideRotate LeftRotate Left, OverrideMove by WaypointsTurn Invisible, IntangibleTurn Visible, TangibleSet TranslucencyFade Translucency