env_headcrabcanister

Headcrab Canister

The canister is a mortar shell containing a payload of headcrabs. The mortar shell inflicts damage within a radius of where it lands and releases headcrabs after impact. Inputs and entity options offer control over impact damage and when the headcrabs are released, among other options.

For an example of their use, see the shantytown in d1_canals_05.

Dedicated Console Variables

sk_env_headcrabcanister_shake_amplitude <float>

Crash effect's shake amplitude.

sk_env_headcrabcanister_shake_radius <float>

Crash effect's shake radius.

sk_env_headcrabcanister_shake_radius_vehicle <float>

Crash effect's shake radius for vehicles.

Keyvalues

Name (targetname) <string>[ Edit ]

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

Parentname:

Parent (parentname) <targetname>

Specifies a movement parent. An entity will maintain its initial offset from its parent. An attachment point can be added to the end of the name, separated by a comma.

Pitch Yaw Roll (Y Z X) (angles) <QAngle>

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.

Wich headcrab to Spawn? ([todo internal name (i)]) <choices>

Select wich headcrab will jump out the canister.

• 1 : Normal headcrabs
• 2 : Fast Headcrabs
• 3 : Poison Headcrabs

Headcrab count ([todo internal name (i)]) <integer>

Number of headcrabs to spawn on impact.

Flight Speed ([todo internal name (i)]) <float>

Speed to fly through the air.

Flight Time ([todo internal name (i)]) <float>

Time to fly through the air in seconds.

Starting Height ([todo internal name (i)]) <float>

Relative height from the landing position at which the canister should be launched. Positive values mean launch it above the impact point, negative values mean launch it below.

Min Refire time ([todo internal name (i)]) <float>

Min number of seconds before the canister is refired. This will only work for canisters placed in the skybox.

Max Refire time ([todo internal name (i)]) <float>

Max number of seconds before the canister is refired. This will only work for canisters placed in the skybox.

Canister count ([todo internal name (i)]) <integer>

Number of canisters to fire in the skybox (0 means fire continuously, forever).

Impact damage ([todo internal name (i)]) <float>

Max damage the canister applies on impact.

Impact damage Radius ([todo internal name (i)]) <float>

Max radius of the impact damage for the canister.

Smoke duration ([todo internal name (i)]) <float>

Duration that the canister smokes. -1 means always smoke.

Launch Position Name ([todo internal name (i)]) <targetname>

If the canister should launch to its origin from another point within the world, this should specify an info_target at the launch origin.

Flags

• 1 : No Impact Sound

• 2 : No Launch Sound

• 4096 : Start Impacted

• 8192 : Land at initial position

• 16384 : Wait for input to open

• 32768 : Wait for input to spawn headcrabs

• 65536 : No smoke

• 131072 : No shake

• 262144 : Remove on impact

• 524288 : No impact effects

Inputs

Parentname:

SetParent <stringRedirectInput/string>

Move with this entity. See Entity Hierarchy (parenting).

SetParentAttachment <stringRedirectInput/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 <stringRedirectInput/string>

As above, but without teleporting. The entity retains its position relative to the attachment at the time of the input being received.

ClearParent

Removes this entity from the the movement hierarchy, leaving it free to move independently.

FireCanister

Fires the canister.

OpenCanister

Opens the canister (must be called after the OnImpacted output is fired).

SpawnHeadcrabs

Spawns headcrabs (must be called after the OnImpacted output is fired and after OpenCanister is triggered, if the Wait for Input to open spawnflag is checked.)

StopSmoke

Outputs

OnLaunched <targetname>'

Fired when the canister is launched. The targetname is of the canister.

OnImpacted

Fires when canister hits the ground.

OnOpened

Fires when canister has finished opening.