tank_boss

Class hierarchy
CTFTankBoss ↳CTFBaseBoss ↳NextBotCombatCharacter ↳CBaseCombatCharacter ↳CBaseFlex ↳CBaseAnimatingOverlay ↳CBaseAnimating ↳CBaseEntity
tf_tank_boss.cpp

The Robot Tank

Robot Tank deploying its bomb at the hatch

Tank falling through grating (animated)

tank_boss is a model entity available in  Team Fortress 2. It's used in Mann Vs Machine as an unstoppable bomb carrier.

Having movement and spawning similar to func_tracktrain, it uses path_track as waypoints to move through the map, use branching paths and invoke path-related inputs and outputs. When it reaches the end of the track, it will deploy a bomb for roughly 8 seconds, giving players a chance to destroy it at the last moment. It creates a tank_destruction entity when destroyed.

Warning: It cannot teleport to track points.

Warning: When spawned using ent_create, the tank will attempt to travel in a straight line from the point it was spawned at to the bomb hatch.

Population Variables

Listed below are all Population file variables to define how it functions in-game when spawned by the tf_populator entity.

Popfile Formatting

WaveSchedule { Wave { WaveSpawn { //Do not use "Where" KeyValue TotalCount 5 SpawnCount 2 MaxActive 4 //etc... Tank { Health 50000 Name "Tank Name" OnBombDroppedOutput { Target LogicEntity_Name Action InValue Param CaseValueName } OnKilledOutput { Target LogicEntity_Name Action InValue Param CaseValueName } Skin 1 Speed 75.0 StartingPathTrackNode PathTrack_Name } } } }

Variable	Type	Default	Description
Health	integer	50000	Maximum health it spawns with.
Name	string		Unused, was most likely used for Deathcams at some point. [confirm]
OnBombDroppedOutput	Output		When the deploy animation is complete. Target = targetname Action = Input Param = Parameter
OnKilledOutput	Output		When health drops to 0%. Target = targetname Action = Input Param = Parameter
Skin	integer	0	What the tank looks like using defined indexes from the model file?
Speed	float	75.0	How fast does the Tank move? Note: Rotation isn't as fast, so higher values may look less immersive.
StartingPathTrackNode	string		Where it will spawn and start its journey?

Hammer Editor

Bug:If there are no path_tracks present in the map, the game will crash.

Bug:Tanks pass through any brush geometry with a transparent texture (grates, glass, etc.) and most tool textures excluding tools/toolsblack, tools/toolsnodraw and tools/toolsskybox. Turning the geometry into an entity doesn't prevent this, with the exception of func_detail.

Confirm:Is it only func_detail or do other internal entities work, e.g. func_ladder?

Note: If you wish to avoid cutting Visleafs with Wedges (or ramps), you can turn the geometry into a Displacement.

Keyvalues

Name (targetname) <string>

The name that other entities refer to this entity by, via Inputs/Outputs or other keyvalues (e.g. parentname or target).
Also displayed in Hammer's 2D views and Entity Report.

See also: Generic Keyvalues, Inputs and Outputs available to all entities

Health (health) <integer>

Health of the tank.

Model (model) <string>

Model the tank uses.

Speed (speed) <integer>

Boss' max movement speed, higher speeds can cause the tank to clip through geometry.

Start Disabled (start_disabled) <boolean>

Start Disabled

Initial Team (TeamNum) <integer choices>

Which team the entity belongs / is assigned to on spawn

• 0: None
• 1: Spectator/Halloween Souls
• 2: RED
• 3: BLU/Robots
• 5: Halloween Bosses (only in ) !FGD

BaseFadeProp:

Start Fade Dist (fademindist) <float>

Distance at which the entity starts to fade.

End Fade Dist (fademaxdist) <float>

Max fade distance at which the entity is visible.

• If start fade is <0, the entity will disappear instantly when end fade is hit.
• If end fade is <0, the entity won't disappear at all. (This is the default behavior.)

The values will scale appropriately if the entity is in a 3D Skybox.

Fade Scale (fadescale) <float>

If you specify so in worldspawn, or if the engine is running below DirectX 8 (DX7 in ), props will fade out even if the fade distances above aren't specified. This value gives you some control over when this happens: numbers smaller than 1 cause the prop to fade out at further distances, while those greater than 1 cause it to fade out at closer distances. Using 0 turns off the forced fade altogether. See also the QC command $noforcedfade.

Inputs

SetSpeed

Change the speed of the Boss. Must be a positive value.

Note: High values will cause the tank to have difficulties navigating the path_tracks.

SetHealth

Set the tank's health.

SetMaxHealth

Set the tank's max health.

AddHealth

Add health to the tank.

RemoveHealth

Remove health from the tank.

Bug:Changes to the tank's health will not be reflected in the HUD until the tank is damaged by a player.

DestroyIfAtCapturePoint

Destroys the tank if it reached its final path_track node.

AddCaptureDestroyPostfix

Sets the tank's destruction animation name's postfix. See external links for a demo

SetTeam <integerRedirectInput/integer>

Changes the entity's team.
0: Any
2: Red
3: Blue

Ignite

Ignite, burst into flames.

IgniteLifetime <floatRedirectInput/float>

Ignite with the given lifetime.

Todo: Before the flames extinguish, or before health reaches zero?

IgniteNumHitboxFires <integerRedirectInput/integer>

Ignite with the given number of hitbox fires.

IgniteHitboxFireScale <floatRedirectInput/float>

Ignite with the given hitbox fire scale.

Outputs

OnHealthBelow90Percent

Fired when Health drops below 90%

OnHealthBelow80Percent

Fired when Health drops below 80%

OnHealthBelow70Percent

Fired when Health drops below 70%

OnHealthBelow60Percent

Fired when Health drops below 60%

OnHealthBelow50Percent

Fired when Health drops below 50%

OnHealthBelow40Percent

Fired when Health drops below 40%

OnHealthBelow30Percent

Fired when Health drops below 30%

OnHealthBelow20Percent

Fired when Health drops below 20%

OnHealthBelow10Percent

Fired when Health drops below 10%

OnKilled

Fired when the tank's health drops to 0%

Studiomodel:

OnIgnite

Fired when this object catches fire.

External Links

• Various tank destruction animations for use with the AddCaptureDestroyPostfix input
  Todo: Video description has more info on destruction animations

• Tank Robot on Team Fortress Wiki