func_tank_combine_cannon

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func_tank_combine_cannon is a brush entity available in Half-Life 2 Half-Life 2, Half-Life 2: Episode One Half-Life 2: Episode One, Half-Life 2: Episode Two Half-Life 2: Episode Two, and Half-Life 2: Deathmatch Half-Life 2: Deathmatch. This entity forms the basis of the three-way Combine Autogun seen in Episode Two on ep2_outland_09. It is operated by an npc_enemyfinder_combinecannon and fires a powerful beam of dark energy. In Half-Life 2, the shooting ability appears to not function. In Episode One, the gun can harm things, but the visual effects are somewhat different than Episode Two.

Note.pngNote:For use as a Combine Autogun, Effect Handling should be set to Combine Cannon and Ammo Type should be Combine Heavy Cannon
Note.pngNote:This entity is also in the code for Portal Portal 2 Black Mesa. Its functionality is not guaranteed.


In code, it is represented by theCFuncTankCombineCannonclass, defined in thefunc_tank.cppfile.

Flags

BaseTank:

  • 1: Active
  • 16: Only Direct: The tank will only fire if it's target is in direct line of sight.
  • 32: Controllable (by player)
  • 64: Damage Kick
  • 1024: NPC Controllable
  • 2048: NPC Set Controller
  • 4096: Allow friendlies to hit player
  • 32768: Non-solid.
  • 131072: Perfect accuracy every 3rd shot at player

Keyvalues

Warning.pngWarning:Despite fire rate appearing variable, it is actually hardcoded to 1.5

BaseTank:

Bullets (bullet) <choices>
Ammo type. Be aware that some games will use Ammo type instead.
Literal value Description
0 None
1 Pistol
2 SMG1
3 AR2 (shows pistol/smg1 bullets?)
4 Laser (does nothing)
Ammo type (ammotype) <choices>
Ammo type. Be aware that some games will use Bullets instead.
Value Description
None
Pistol Pistol
SMG1 SMG1
AR2 AR2
CombineHeavyCannon Combine Heavy Cannon (Episode 2 autogun)
Control Volume (control_volume) <targetname>
Name of a trigger the player must be inside to control the tank.
(Team) Master (master) <string>
Not used for Source. Provided for backwards compatibility with multisource or game_team_master.
Yaw rate (yawrate) <string>
How fast tank can look left or right.
Yaw range (yawrange) <string>
How far tank can turn left or right.
Yaw tolerance (yawtolerance) <string>
Additional left-right range. If the gun tries to turn beyond Yaw range + Yaw tolerance, the gun will snap back to the maximum Yaw range.
Pitch rate (pitchrate) <string>
How fast tank can look up or down
Pitch range (pitchrange) <string>
How far tank can turn up or down
Pitch tolerance (pitchtolerance) <string>
Additional up-down range. If the gun tries to turn beyond Pitch range + Pitch tolerance, the gun will snap back to the maximum Pitch range.
Barrel Length (barrel) <string>
Solid length of the tank barrel. Any part of the barrel beyond this length may clip through objects.
Barrel Horizontal (barrely) <string>
How wide the barrel is, horizontally.}
Barrel Vertical (barrelz) <string>
How wide the barrel is, vertically.
Smoke Sprite (spritesmoke) <sprite>
Smoke sprite to emit when gun fires.
Icon-Bug.pngBug:Transparency may not work.
Flash Sprite (spriteflash) <sprite>
Flash sprite to emit when gun fires.
Sprite scale (spritescale) <string>
Sprite scale for both sprites above.
Rotate Start Sound (rotatestartsound) <sound>
Sound to play when tank starts to turn.
Rotate Loop Sound (rotatesound) <sound>
Sound to play when tank is turning.
Rotate Stop Sound (rotatestopsound) <sound>
Sound to play when tank stops turning.
Rate of Fire (firerate) <string>
Number of bullets to fire in a second.
Damage Per Bullet (bullet_damage) <string>
How much a single bullet hurts everything except the player. If 0, takes amount from the type of bullet/damage.
Damage Per Bullet Vs Player (bullet_damage_vs_player) <string>
How much a single bullet hurts the player only. If 0, takes amount from the type of bullet/damage.
Firing persistence (persistence) <string>
How many seconds to keep firing at target's last known position after losing LOS (for NPCs).
Firing persistence2 (persistence2) <string>
After Firing persistence is over, how many seconds to periodically fire at target's last known position (for NPCs).
Bullet accuracy (firespread) <choices>
How accurately the gun can fire.
  • 0: Perfect Shot
  • 1: Small cone
  • 2: Medium cone
  • 3: Large cone
  • 4: Extra-large cone
Minimum target range (minRange) <string>
Minimum range to target something (for NPCs). If a target is closer than this amount, the NPC will probably switch to any weapon they have on them.
Maximum target range (maxRange) <string>
Maximum range to target something (for NPCs).
Confirm:This may actually be the distance for aim assistance instead?
Gun Base Attachment (gun_base_attach) <string>
If Parent is specified, this is the attachment point on the parent to aim from.
Gun Barrel Attachment (gun_barrel_attach) <string>
If Parent is specified, this is the attachment point on the parent to fire from. If you specify this, you'll want to specify the Gun Base Attachment too.
Gun Yaw Pose Param (gun_yaw_pose_param) <string>
If Parent and Gun Pitch Pose Param are specified, then the gun itself will be invisible and the tank will steer a gun on the parent using the pose parameters.
Gun Yaw Pose Center (gun_yaw_pose_center) <float>
The center yaw pose parameter of the gun on the parent.
Gun Pitch Pose Param (gun_pitch_pose_param) <string>
If Parent and Gun Yaw Pose Param are specified, then the gun itself will be invisible and the tank will steer a gun on the parent using the pose parameters.
Gun Pitch Pose Center (gun_pitch_pose_center) <float>
The center pitch pose parameter of the gun on the parent.
Ammunition Count (ammo_count) <integer>
Amount of ammo when player is using. -1 = unlimited ammo.
Lead Target (LeadTarget) <boolean>
Aim ahead to hit moving targets (for NPCs).
NPC Man Point (npc_man_point) <targetname>
Point where NPC must stand to use.
Post-NPC Attack Grace Period (playergraceperiod) <float>
If specified, NPC's manning this func tank won't fire at the player, after firing at a non-player, for this amount of time.
Ignore Grace Upto (ignoregraceupto) <float>
The player grace period is ignored if the player is under this distance from the tank.
Player Lock Time (playerlocktimebeforefire) <float>
The tank must be aiming right on the player for this amount of time before it's allowed to fire.
Effect Handling (effecthandling) <choices>
Produce these sound and particle effects when firing.
  • 0: Use Individual Settings.
  • 1: AR2
  • 2: Combine Cannon

Internal keyvalues used by VRAD:

Minimum Light Level (_minlight) <normal>
Minimum amount of light to hit this brush (monochromatic). Values over 1 are overbright, and will bloom in HDR mode.
Shadows (vrad_brush_cast_shadows) <boolean> (in all games since Source 2007)
Determines if this entity will cast lightmap shadows.

VisibleBrush:

Render Mode (rendermode) <choices>
Set a non-standard rendering mode on this entity.
Render Modes
  • 0: Normal
  • 1: Color
  • 2: Texture
  • 3: Glow
  • 4: Solid/Alphatest Obsolete
  • 5: Additive
  • 6: Removed, does nothing Obsolete
  • 7: Additive Fractional Frame
  • 8: Alpha Add
  • 9: World Space Glow
  • 10: Don't Render
Render FX (renderfx) <choices>
Various somewhat legacy alpha effects.
Render Effects
Icon-Bug.pngBug:Alpha effects from 0 to 10 are unavailable due to the bug in code in Counter-Strike: Global Offensive Counter-Strike: Global Offensive
  • 0: None
  • 1: Slow Pulse (varies alpha by ±16 over a period of 1.5 s)
  • 2: Fast Pulse (varies alpha by ±16 over a period of 0.4 s)
  • 3: Slow Wide Pulse (varies alpha by ±64 over a period of 1.5 s)
  • 4: Fast Wide Pulse (varies alpha by ±64 over a period of 0.4 s)
  • 5: Slow Fade Away (decreases alpha by -1 per frame/(in all games since Left 4 Dead) Fades out over 4 s)
  • 6: Fast Fade Away (decreases alpha by -4 per frame/(in all games since Left 4 Dead) Fades out over 1 s)
  • 7: Slow Become Solid (increases alpha by +1 per frame/(in all games since Left 4 Dead) Fades in over 4 s)
  • 8: Fast Become Solid (increases alpha by +4 per frame/(in all games since Left 4 Dead) Fades in over 1 s)
  • 9: Slow Strobe (transparent 0.8 s, visible 0.8 s, repeat)
  • 10: Fast Strobe (transparent 0.2 s, visible 0.2 s, repeat)
  • 11: Faster Strobe (transparent 0.09 s, visible 0.09 s, repeat)
  • 12: Slow Flicker (transparent 0.18 s, visible 1.5 s, repeat)
  • 13: Fast Flicker (transparent 0.14 s, visible 0.2 s, repeat)
  • 14: Constant Glow ("NoDissipation;" purpose uncertain—for sprites?) (not in Counter-Strike: Global Offensive)
  • 15: Distort (causes unnatural flickering and position shifting)/(in all games since Left 4 Dead) Fade Out (instant; not very useful outside of code)
  • 16: Hologram (Distort + "distance fade")/(in all games since Left 4 Dead) Fade In (instant; not very useful outside of code)
  • 17: Scale Up ("Explode"/"scale up really big!" causes wild stretching of model parts) (in Source 2013)/Fade Wider Pulse (varies alpha by ±255 over a period over a period of 0.26 s) (in all games since Left 4 Dead)
    Confirm:which branches/games is it available in, and where does it do what?
  • 18: Glow Shell (purpose unclear) (in all games since Source 2013) (not in Counter-Strike: Global Offensive)
    Confirm:what does this do? and which games is it in?
  • 19: Clamp Minimum Scale ("keep this sprite from getting very small (SPRITES only!)") (not in Counter-Strike: Global Offensive)
  • 20: Environmental Rain ("for environmental rendermode, make rain") (in Source 2013) (not in Counter-Strike: Global Offensive)
    Confirm:which games? may be nonfunctional.
  • 21: Environmental Snow ("for environmental rendermode, make snow") (in Source 2013) (not in Counter-Strike: Global Offensive)
    Confirm:which games? may be nonfunctional.
  • 22: Spotlight FX ("TEST CODE for experimental spotlight") (in Source 2013) (not in Counter-Strike: Global Offensive)
  • 23: Ragdoll ("HACKHACK: TEST CODE for signalling death of a ragdoll character;" ragdolls an entity but doesn't kill it) (in Source 2013) (not in Counter-Strike: Global Offensive)
    Confirm:which games? may be nonfunctional?
  • 24: Fade Wider Pulse (varies alpha by ±255 over a period over a period of 0.26 s) (in Source 2013) (not in Counter-Strike: Global Offensive)
  • 25: kRenderFXMax/Fade Near (removed since Left 4 Dead) (not in Counter-Strike: Global Offensive)
Blank image.pngTodo: what does this do? may be nonfunctional
Render FX / Transparency (0–255) (renderamt) <integer 0–255>
Transparency amount; requires a Render Mode other than Normal. 0 is invisible, 255 is fully visible.
Render Color (R G B) (rendercolor) <color255>
Color tint.
Texture Frame (texframeindex) <integer> !FGD
The frame number for any animated textures on this entity.

Shadow:

Disable Shadows (disableshadows) <boolean>
Prevents the entity from creating cheap render-to-texture shadows, or lightmap shadows if the entity is a prop_static. Does not affect shadow mapping.
Disable Receiving Shadows (disablereceiveshadows) <boolean>
Prevent the entity from receiving dynamic shadows on itself.
Shadow Cast Distance (shadowcastdist) <integer> !FGD
Sets how far the entity casts dynamic shadows. 0 means default distance from the shadow_control entity.
Disable ShadowDepth (disableshadowdepth) <boolean> (in all games since Portal 2)
Used to disable rendering into shadow depth (for projected textures) for this entity.
Disable flashlight (disableflashlight) <boolean> (in all games since Portal 2)
Used to disable projected texture lighting and shadows on this entity.
Projected Texture Cache (shadowdepthnocache) <choices> (in all games since Portal 2)
Used to hint projected texture system whether it is sufficient to cache shadow volume of this entity or to force render it every frame instead.
Choices
  • 0 : Default
  • 1 : No cache - render every frame
  • 2 : Cache it - render only once

SystemLevelChoice:

Minimum / Maximum Effect Details Level (mincpulevel / maxcpulevel) <choices> (in all games since Left 4 Dead)
Don't render for players with Effect Details levels that exceed the minimum or maximum.[Note.pngKey names are related to cpu_level cvar used by Effect Details.]
Choices
  • 0: Default ("Low" formincpulevel, "High" formaxcpulevel)
  • 1: Low
  • 2: Medium
  • 3: High
Minimum / Maximum Shader Details Level (mingpulevel / maxgpulevel) <choices> (in all games since Left 4 Dead)
Don't render for players with Shader Details levels that exceed the minimum or maximum.[Note.pngKey names are related to gpu_level cvar used by Shader Details.]
Choices
  • 0: Default ("Low" formingpulevel, "Very High" formaxgpulevel)
  • 1: Low
  • 2: Medium
  • 3: High
  • 4: Very High

DXLevelChoice:

Minimum / Maximum DX Level (mindxlevel / maxdxlevel) <choices> (removed since Left 4 Dead)
The entity will not exist if the engine is running outside the given range of DirectX Versions.
Choices
Warning.pngWarning:If these are used, the object may break when the user switches their DirectX settings.

Base:
Brush Model (model) <string> !FGD
Which bmodel to display. Normally automaticity set by VBSP; only should be edited if editing a map without recompiling it.
Collisions (solid) <choices>
Method of collision for this entity.

Values:

  • 0: None
  • 1: BSP (QPhysics) !FGD
    Icon-Bug.pngBug:In Portal 2, if an entity using QPhysics collisions is hit by Gel, the game will crash!
  • 2: Bounding Box
  • 3: Oriented Bounding Box (Use for runtime spawned brush entities meant to be rotated) !FGD
  • 4: Oriented Bounding Box but constrained to Yaw only !FGD
  • 5: Custom/Test (Usually no collision with anything) !FGD
  • 6: VPhysics


Name (targetname) <string>
The name that other entities use to refer to this entity.
Parent (parentname) <targetname>
Maintain the same initial offset to this entity. An attachment point can also be used if separated by a comma at the end. (parentname [targetname],[attachment])
Tip.pngTip:Entities transition to the next map with their parents
Tip.pngTip:phys_constraint can be used as a workaround if parenting fails.
Origin (X Y Z) (origin) <coordinates>
The position of this entity's center in the world. Rotating entities typically rotate around their origin.
Note.pngNote:Hammer does not move the entities accordingly only in the editor.
Pitch Yaw Roll (X Y Z) (angles) <angle>
This entity's orientation in the world. Pitch is rotation around the Y axis, yaw is the rotation around the Z axis, roll is the rotation around the X axis.
Note.pngNote:This works on brush entities, although Hammer doesn't show the new angles.
Classname (classname) <string> !FGD
Determines the characteristics of the entity before it spawns.
Tip.pngTip:Changing this on runtime still has use, like making matching an entry in S_PreserveEnts will persist the entity on new rounds!
Spawnflags (spawnflags) <flags> !FGD
Toggles exclusive features of an entity, its specific number is determined by the combination of flags added.
Effects (effects) <flags> !FGD
Combination of effect flags to use.
Entity Scripts (vscripts) <scriptlist> (in all games since Left 4 Dead 2) (also in Team Fortress 2)
Space delimited list of VScript files (without file extension) that are executed after all entities have spawned. The scripts are all executed in the same script scope, later ones overwriting any identical variables and functions. Scripts executed on the worldspawn entity will be placed in root scope.
Think function (thinkfunction) <string> (in all games since Left 4 Dead 2) (also in Team Fortress 2)
Name of the function within this entity's script that'll be called automatically every 100 milliseconds, or a user-defined interval if the function returns a number. Avoid expensive operations in this function, as it may cause performance problems.
Lag Compensation (LagCompensate) <boolean> (in all games since Left 4 Dead 2) !FGD
Set to Yes to lag compensate this entity. Should be used very sparingly!

Inputs

DisableHarrass
Disable the cannon tracking an unseen player.
EnableHarrass
Allow the cannon to track and pester a player who is hiding (by default, it can).

BaseTank:

Activate
Turn the tank on.
Deactivate
Turn the tank off (go dormant).
SetFireRate <float>
How fast to fire (0 = don't fire).
SetDamage <integer>
Set the Damage Per Bullet keyvalue.
SetTargetPosition <vector>
World position (coordinates) that to aim at
SetTargetDir <vector>
Direction (pitch yaw roll) to aim at.
SetTargetEntityName <targetname>
"Set the entity I should follow/attack to the closest entity matching this name."[Clarify]
SetTargetEntity <entity>
"Set the entity I should follow/attack to the passed in entity. This requires an output which passes an entity through the output."[Clarify]
ClearTargetEntity
Clear the entity memory of any targets it was told to attack.
FindNPCToManTank <string>
Find a nearby capable NPC to man this tank.
StartFindingNPCs
Start searching for capable NPCs to man this tank.
StopFindingNPCs
Stop searching for capable NPCs to man this tank.
ForceNPCOff
Force the NPC manning this tank (if any) to leave.
SetMaxRange <float>
Set the max range of the tank.
Confirm:Maximum distance a shot can go?

Visible Brush:
Alpha <integer 0–255>
Sets the entity's transparency to a number from 0 (invisible) to 255 (fully visible). Requires the entity to have its Render Mode (rendermode) set to a number other than 0.
AlternativeSorting <boolean>
Swaps the rendering order of the entity. Used to attempt to fix sorting problems when rendering, for example an object rendering in front of translucent materials.
Color <color255>
Sets an RGB color for the entity.
SetDamageFilter <targetname>
Sets a filter for this entity for when it receives damage.
EnableDamageForces
Allows the entity to be pushed by damage done to it (usually force amount correlates with the damage done).
DisableDamageForces
Prevents the entity from being pushed by damage done to it.
EnableDraw  (in all games since Portal 2)
Removes EF_NODRAW from the entity.
DisableDraw  (in all games since Portal 2)
Applies EF_NODRAW to the entity. Note that this is different from rendermode 10.
EnableReceivingFlashlight  (in all games since Portal 2)
Makes it so that the entity is lit by env_projectedtextures.
DisableReceivingFlashlight  (in all games since Portal 2)
Prevents the entity from being lit by env_projectedtextures. The shadow made by the texture will still cast.

Reflection:

DisableDrawInFastReflection  (in all games since Portal 2)
Turns off rendering of this entity in reflections when using $reflectonlymarkedentities in water material.
EnableDrawInFastReflection  (in all games since Portal 2)
Turn on rendering of this entity in reflections when using $reflectonlymarkedentities in water material.

Shadow:

DisableShadow
Turn dynamic shadows off for this entity. Identical to applying  EF_NOSHADOW.
EnableShadow
Turn dynamic shadows on for this entity.
DisableReceivingFlashlight  (in all games since Portal 2)
This object will not receive light or shadows from projected textures.
EnableReceivingFlashlight  (in all games since Portal 2)
This object may receive light or shadows from projected textures.

Base:
AddContext <string>
Adds to the entity's list of response contexts. See Context.
AddOutput <string>
Assigns a new keyvalue/output on this entity. For keyvalues, some rely on extra necessary code to be ran and won't work if its simply just changed through this input. There is a strict format that must be followed:
// Format of changing KeyValues: "AddOutput [key] [value]"
//// Raw text:
"OnUser1" "!self,AddOutput,targetname new_name"

// Format of adding an Output: "AddOutput {targetname}:{inputname}:{parameter}:{delay}:{max times to fire, -1 means infinite}"
//// Raw text:
"OnUser1" "!self,AddOutput,OnUser1:SetParent:!activator:0.0:-1"
// Arguments can be left blank, but the empty blank should still be contained.
//// Raw text:
"OnUser1" "!self,AddOutput,OnUser1:ClearParent::0.0:-1"
ClearContext
Removes all contexts from this entity's list.
ClearParent
Removes this entity from the the movement hierarchy, leaving it free to move independently.
FireUser1 to FireUser4
Fires the respectiveOnUseroutputs; see User Inputs and Outputs.
Kill
Removes this entity and any entities parented to it from the world.
KillHierarchy
Functions the same as Kill, although this entity and any entities parented to it are killed on the same frame, being marginally faster thanKillinput.
RemoveContext <string>
Remove a context from this entity's list. The name should match the key of an existing context.
SetParent <string>
Move with this entity. See Entity Hierarchy (parenting).
SetParentAttachment <string>
Change this entity to attach to a specific attachment point on its parent. The entity will teleport so that the position of its root bone matches that of the attachment. Entities must be parented before being sent this input.
SetParentAttachmentMaintainOffset <string>
As above, but without teleporting. The entity retains its position relative to the attachment at the time of the input being received.
Use  !FGD
Same as a player invoking +use; no effect in most cases.
DispatchResponse <string> !FGD
Dispatches a response to the entity. See Response and Concept.
DispatchEffect <string> (removed since Left 4 Dead) !FGD
Dispatches a special effect from the entity's origin; See also List of Client Effects. Replaced by the particle system since Left 4 Dead.
RunScriptFile <script> (in all games since Left 4 Dead 2) (also in Team Fortress 2)
Execute a VScript file from disk, without file extension. The script contents are merged with the script scope of the receiving entity.
RunScriptCode <string> (in all games since Left 4 Dead 2) (also in Team Fortress 2)
Execute a string of VScript source code in the scope of the entity receiving the input. String quotation may be needed when fired via console.
Icon-Bug.pngBug:In Hammer, using string arguments will corrupt the VMF file's structure, making the file unviewable for the next Hammer session.
Note.pngFix:Remove the string argument manually with a text editor.
Note.pngNote:Team Fortress 2 Backtick characters ` are replaced with quotation marks at runtime, allowing quotation marks to be used when normally not possible.
CallScriptFunction <string> (in all games since Left 4 Dead 2) (also in Team Fortress 2) !FGD
Calls a VScript function defined in the scope of the receiving entity.
TerminateScriptScope  (only in Team Fortress 2) !FGD
Destroys the script scope of the receving entity.
SetLocalOrigin <coordinates> (in all games since Alien Swarm) !FGD
Send this entity to a spot in the map. If the entity is parented to something, it will be offset from the parent by this amount.
SetLocalAngles <angles> (in all games since Alien Swarm) !FGD
Set this entity's angles.

Outputs

OnShotAtPlayer
Fired every time the cannon shoots at the player.

BaseTank:

OnFire
Fires when the tank fires its bullets.
OnAquireTarget
Fires when target is newly in range and can be shot.
OnLoseTarget
Fires when when target goes out of range.
OnAmmoDepleted
DO NOT USE. Exists in code, but never coded to fire at any point.
OnGotController
Fires when an NPC starts to control this tank. Players do NOT fire this input.
OnGotPlayerController
Fires when a Player starts to control this tank. NPCs do NOT fire this input.
OnLostController
Fires when the NPC controller of the tank stops controlling it. Players do NOT fire this input.
OnLostPlayerController
Fires when the Player controller of the tank stops controlling it. NPCs do NOT fire this input.
OnReadyToFire
Fires once when the tank spawns, or is done waiting to fire between rounds. Useful for playing a reloading/charging/searching sound possibly.

Base:

OnUser1 to OnUser4
These outputs each fire in response to the firing of the like-numbered FireUser1 to FireUser4 Input; see User Inputs and Outputs.