prop_dynamic_override

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prop_dynamic_override is a point entity available in all Source games. A variant of prop_dynamic which will permit using models designed to be used as prop_physics. Although this entity provides the freedom of turning physics props into dynamic props, be aware of that players will rely on the behavior of props to be more or less consistent with other maps, and even other Source games.

Flags

DynamicProp:

  • 64: Use Hitboxes for Renderbox
  • 256: Start with collision disabled

BreakableProp:

  • 16: Break on Touch
  • 32: Break on Pressure

Keyvalues

DynamicProp:

Default Animation (DefaultAnim) <string>
The animation this prop will play when not doing a random or forced animation.
Randomly Animate (RandomAnimation) <boolean>
Makes the prop randomly select and play animations at intervals defined by the Min/Max Random Anim Time KVs. In between the random animations, it will revert to playing Default Animation.
Min Random Anim Time (MinAnimTime) <float>
Minimum time between random animations.
Max Random Anim Time (MaxAnimTime) <float>
Maximum time between random animations.
Update children (updatechildren) <boolean>
Confirm:A boolean set to true by default. When set to 0, any children attached to this entity as an attachment will not update. (seems like it would not have a practical use...)
Disable Bone Followers (DisableBoneFollowers) <boolean> (New with Source 2009)
Disables generation of phys_bone_followers for each convex piece the model has in its collision model. phys_bone_followers can quickly eat up the edict count, so this keyvalue can be very helpful in freeing resources. This will however make the collision model no longer function ([confirm] As in become non-solid?), and the model will not be able to ragdoll anymore.
Hold Animation (HoldAnimation) <boolean> (New with Alien Swarm)
If set, the prop will not loop its animation, but hold the last frame.
Animate Every Frame (AnimateEveryFrame) <boolean> (New with Portal 2)
Force this prop to animate every frame. Usually this doesn't need to be touched.

BreakableProp:

Explosion Damage (ExplodeDamage) <float>
If non-zero, when this entity breaks it will create an explosion that causes the specified amount of damage. See also Explosion Radius.
Explodsion Radius (ExplodeRadius) <float>
If non-zero, when this entity breaks it will create an explosion with a radius of the specified amount. See also Explosion Damage.
Sound to make when punted (puntsound) <sound> (New with Episode One)
Sound to make when punted by gravity gun.
Break Model Message (BreakModelMessage) <string>
"If set, will use this break model message instead of the normal break behavior."
Confirm:Is this new with Source SDK 2013...? It isn't in Alien Swarm or 2007 code but is in 2013. New with L4D?

Breakable (common):

Performance Mode (PerformanceMode) <choices>
Used to limit the amount of gibs produced when this entity breaks, for performance reasons.
  • 0: Normal
  • 1: No Gibs
  • 2: Full Gibs on All Platforms (Xbox 360, PS3, etc)
  • 3: Reduced gibs
Min Damage to Hurt (minhealthdmg) <integer>
If a single hit to the object doesn't do at least this much damage, the prop won't take any of the damage it attempted to give.
Pressure Delay (PressureDelay) <float>
Seconds to delay breaking from pressure. Allows creaking/groaning sounds to play.
Health (health) <integer>
How close to breaking the object is.
Maximum Health (max_health) <integer>
Health cannot exceed this amount.

Model:

World Model (model) <string>
The model this entity should appear as. 128-character limit.
Skin (skin or ModelSkin <Alien Swarm>) <integer>
Some models have multiple skins. This value selects from the index, starting with 0.
Collisions (solid) <choices>
Method of collision for this entity.
Body Group (body or SetBodyGroup) <integer> !FGD
Sets the the active $bodygroup.
Hitbox Set (hitboxset) <string> !FGD
Sets the $hboxset to use.
Sequence (sequence) <integer> !FGD
Default animation sequence for the model to be playing after spawning.
Playback Rate (playbackrate) <float> !FGD
A multiplier of the framerate at which animations are played, negative values are accepted. Default is 1.0
Cycle (cycle) <float> !FGD
The current frame of the currently playing animation, on a range from 0-1.
Lighting Origin (LightingOrigin) <targetname>
Select an entity (not info_lighting!) from which to sample lighting instead of the entity's origin.
Lighting Origin Offset (LightingOriginHack) <targetname> !FGD
The info_lighting_relative from which to sample lighting instead of the entity's origin. Not in <Left 4 Dead><Left 4 Dead 2>.
Damage Filter Name (damagefilter) <targetname>
When this entity receives damage, it will filter by this entity.
Start Fade Distance (fademindist) <float>
Distance at which the entity starts fading. If <0, the entity will disappear instantly when end fade is hit. The value will scale appropriately if the entity is in a 3D Skybox.
End Fade Distance (fademaxdist) <float>
Distance at which the entity ends fading. If <0, the entity won't disappear at all. The value will scale appropriately if the entity is in a 3D Skybox.
Fade Scale (fadescale) <float>
If specified in the worldspawn, or if the engine is running below DirectX 8, entities will fade out even if the fade distances above aren't specified. This value gives more control over when this happens: numbers smaller than 1 cause the entity to fade out at further distances, and greater than 1 cause it to fade out at closer distances. Using 0 turns off the forced fade altogether. See also $noforcedfade.
Render Mode (rendermode) <choices>
Set a non-standard rendering mode on this entity.
Render FX / Transparency (0 - 255) (renderamt) <integer>
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.
Render FX (renderfx) <choices>
Preset pattern of appearance effects.
To do: 18-21, 25
Shadow Cast Distance (shadowcastdist) <integer>
Sets how far the entity casts dynamic shadows. 0 means default distance from the shadow_control entity.
Disable Shadows (disableshadows) <boolean>
Prevent the entity from creating cheap render-to-texture shadows. Does not affect shadow mapping.
Disable Receiving Shadows (disablereceiveshadows) <boolean>
Prevent the entity from receiving shadows on itself.
Model Index (modelindex) <short> !FGD
Changes the entitiy's model to a precached model on the map. See Model Index for more information.
Warning: Using an invalid value will instantly crash the game, this includes 0 and 1.
Texture Frame (texframeindex) <integer>
The frame number for any animated textures on this entity.
Model Scale (modelscale) <float> (New with Source 2007) !FGD
A multiplier for the size of the model. Negative values are accepted. Does not alter the physics collisions in most cases, however. Not in [Portal], <Left 4 Dead>, <Left 4 Dead 2>, sdk 2013.
Warning: Negative or extremely high values can cause crashes!
Glow Backface Multiple (glowbackfacemult) <float> (New with Left 4 Dead 2) !FGD
If this object has a glow effect, multiply the effect by this much on the sides of the object that are facing away from the viewer.
Move Type (MoveType) <choices> (New with Alien Swarm) !FGD
Sets a movetype for this entity, which changes its movement behavior.
Collision Group (CollisionGroup) <choices> (New with Alien Swarm) !FGD
Sets a collision group for this entity, which changes its collision behavior.
No Animation Sounds (SuppressAnimSounds) <boolean> (New with Portal 2) !FGD
Silences sounds linked to animations.
Disable ShadowDepth (disableshadowdepth) <boolean> (New with Portal 2)
Makes this entity not cast a shadow from env_projectedtextures.
Projected Texture Cache (shadowdepthnocache) <choices> (New with 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.
  • 0: Default
  • 1: No cache - render every frame
  • 2: Cache it - render only once
Disable Flashlight (disableflashlight) <boolean> (New with Portal 2)
Used to disable projected texture lighting and shadows on this entity.

Base:

Classname (classname) <string>
The classname defines the type of entity. Classnames can be changed using AddOutput, which will influence how the engine deals with the entity in certain circumstances.
Name (targetname) <string>
The name that other entities refer to this entity by.
Global Entity Name (globalname) <string>
Name by which this entity is linked to another entity in a different map. When the player transitions to a new map, entities in the new map with globalnames matching entities in the previous map will have the previous map's state copied over their state.
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. Every entity can be parented, even point entities. Entities which are parented will be forced to transition to the next map, such as from a trigger_transition. Some entities which aren't intended to be parented may not function correctly. phys_constraint can be used as a workaround to parenting.
Origin (X Y Z) (origin) <coordinates>
The position of this entity's center in the world. Rotating entities typically rotate around their origin.
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:This works on brush entities, although Hammer doesn't show the new angles.
Flags (spawnflags) <integer>
Toggles features of an entity, its specific number is determined by the combination of flags added.
Response Contexts (ResponseContext) <string>
Pre-defined response system contexts for this entity. Format is key:value,key:value,...
Effects (effects) <integer> !FGD
Combination of effect flags to use.
Local Time (ltime) <float> !FGD
The local time of the entity, independent of the global clock. Used mainly for physics calculations.
Next Think (nextthink) <float> !FGD
Amount of time before the entity thinks again.
Hammer ID (hammerid) <integer> !FGD
The entity's Hammer ID. Mainly used by plugins and debugging commands, such as ent_keyvalue. Can be manually assigned with the "hammerid" or "id" keyvalue. Entities spawned at run-time are not assigned any Hammer ID.
Minimum CPU Level (mincpulevel) <integer> (New with Left 4 Dead) !FGD
Minimum CPU Level allowed for this entity. 0 means all levels allowed.
Maximum CPU Level (maxcpulevel) <integer> (New with Left 4 Dead) !FGD
Maximum CPU Level allowed for this entity. 0 means all levels allowed.
Minimum GPU Level (mingpulevel) <integer> (New with Left 4 Dead) !FGD
Minimum GPU Level allowed for this entity. 0 means all levels allowed.
Maximum GPU Level (maxgpulevel) <integer> (New with Left 4 Dead) !FGD
Maximum GPU Level allowed for this entity. 0 means all levels allowed.
To do: Better description for all of these.
Disable for Xbox 360 (disableX360) <boolean> (New with Left 4 Dead 2) !FGD
If Yes, disables this entity on the Xbox 360 version of Source.
Entity Scripts (vscripts) <scriptlist> (New with Left 4 Dead 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.
Script think function (thinkfunction) <string> (New with Left 4 Dead 2)
Name of a function in this entity's script which will be called automatically every 100 milliseconds (ten times a second) for the duration of the script. It can be used to create timers or to simulate autonomous behavior. The return value (if present) will set the time until the next call. Try to avoid expensive operations in this function, as it may cause performance problems.
Lag Compensation (LagCompensate) <boolean> (New with Left 4 Dead 2) !FGD
Set to Yes to lag compensate this entity. Should be used very sparingly!
Is Automatic-Aim Target (is_autoaim_target) <boolean> (New with Counter-Strike: Global Offensive) !FGD
If set to 1, this entity will slow down aiming movement for consoles and joystick controllers when the entity is under the crosshairs.

Inputs

DynamicProp:

SetAnimation  <string>
Forces the prop to play the named animation.
SetDefaultAnimation  <string>
Changes the animation played when not in a random/forced sequence.
SetPlaybackRate  <float>
Sets the framerate at which animations are played.
TurnOff
Hides the prop through EF_NODRAW. The Disable input does the exact same thing.
TurnOn
Shows the prop (by removing EF_NODRAW). The Enable input does the exact same thing.
DisableCollision
Tells the prop to no longer be solid.
EnableCollision
Tells the prop to become solid again.
SetAnimationNoReset  <string> (New with Alien Swarm)
Force the prop to play an animation unless the prop is already playing the animation. The parameter should be the name of the animation.
FadeAndKill  (New with Portal 2)
Fade out then remove this prop.

BreakableProp:

physdamagescale  <float>
Sets Physics Impact Damage Scale. 0 means this feature is disabled for backwards compatibility.
EnablePhyscannonPickup
Makes the breakable able to picked up by the gravity gun.
DisablePhyscannonPickup
Makes the breakable not able to picked up by the gravity gun.
EnablePuntSound  (New with Episode One)
Allow this prop from playing its Punt Sound sound when punted by the gravity gun.
DisablePuntSound  (New with Episode One)
Prevent this prop from playing its Punt Sound sound when punted by the gravity gun.

Breakable:

Break
Breaks the breakable.
SetHealth  <integer>
Sets a new value for the breakable's health. If the breakable's health reaches zero it will break.
AddHealth  <integer>
Adds health to the breakable.
RemoveHealth  <integer>
Removes health from the breakable.

Model:

skin  <integer>
Selects a skin from the model's index, starting with 0.
SetBodyGroup  <integer>
Sets the the active $bodygroup.
Ignite
Makes the entity catch on fire indefinitely.
IgniteLifetime  <float>
Makes the entity catch on fire for a given amount of time.
IgniteNumHitboxFires  <integer>
Makes the entity catch on fire with a given number of hitbox fire particles. Does not function correctly in <Left 4 Dead 2> onward.
IgniteHitboxFireScale  <float>
Makes the entity catch on fire with a given scale for hitbox fire particles. Does not function correctly in <Left 4 Dead 2> onward.
BecomeRagdoll
Kills the entity and creates a client-side ragdoll from the model. Input is only passed if the model contains $collisionjoints, for other models phys_convert can be used instead.
SetLightingOrigin  <targetname>
Sets the entity's lighting origin to an info_lighting.
SetLightingOriginHack  <targetname>
Offsets the entity's lighting origin by their distance from an info_lighting_relative.
Note:Not available in <Left 4 Dead><Left 4 Dead 2>.
fademindist  <float>
Sets distance at which the entity starts fading. If <0, the entity will disappear instantly when end fade is hit. The value will scale appropriately if the entity is in a 3D Skybox.
fademaxdist  <float>
Sets distance at which the entity ends fading. If <0, the entity won't disappear at all. The value will scale appropriately if the entity is in a 3D Skybox.
SetModelScale  <vector>
Multiplies the size of the model. Does not alter the physics collisions in most cases, however. Negative values are accepted. Takes two values separated by a space. The first is the target model scale. The second value is the number of seconds the change in scale will be spread over. Not in [Portal], <Left 4 Dead>, <Left 4 Dead 2>, sdk 2013. Warning: Negative or extremely high values can cause crashes!
Alpha  <integer>
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.
EnableShadow
Allows the entity to draw a render target shadow.
DisableShadow
Prevents the entity from drawing a render target shadow.
EnableDraw  (New with Portal 2)
Removes EF_NODRAW from the entity.
DisableDraw  (New with Portal 2)
Applies EF_NODRAW to the entity. Note that this is different than rendermode 10.
EnableReceivingFlashlight  (New with Portal 2)
Makes it so that the entity is lit by env_projectedtextures.
DisableReceivingFlashlight  (New with Portal 2)
Prevents the entity from being lit by env_projectedtextures. The shadow made by the texture will still cast.
EnableDrawInFastReflection  (New with Portal 2)
Makes the entity be rendered in reflections from water materials using $reflectonlymarkedentities.
DisableDrawInFastReflection  (New with Portal 2)
Prevents the entity from rendering in fast reflections.

Base:

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.
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.
ClearParent
Removes this entity from the the movement hierarchy, leaving it free to move independently.
AddOutput  <string>
Evaluates a keyvalue/output on this entity.
Format: <key> <value>
Format: <output name> <targetname>:<inputname>:<parameter>:<delay>:<max times to fire, -1 means infinite>
FireUser1 to FireUser4
Fire the OnUser outputs; see User Inputs and Outputs.
Use  !FGD
Same as a player invoking +use; may not do anything. Can also be invoked by creating an output that does not specify an input.
This input is not included in Valve's FGDs.
DispatchEffect  <string> !FGD
Dispatches a special effect from the entity's origin. Obsoleted by particles since Left 4 Dead.
DispatchResponse  <string> !FGD
Dispatches a response to the entity. See Response and Concept.
AddContext  <string>
Adds to the entity's list of response contexts. Format is <key>:<value>.
RemoveContext  <string>
Remove a context from this entity's list. The name should match the key of an existing context.
ClearContext  <string>
Removes all contexts from this entity's list.
RunScriptFile  <script> (New with Left 4 Dead 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> (New with Left 4 Dead 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.
Bug:  In <Left 4 Dead 2>, the code is executed in the script scope of the entity that fires the output, not the one receiving the input.
Warning: Never try to pass string parameters to a script function with this input. It will corrupt the VMF structure because of the nested quotation marks, which then must be removed manually with a text editor.
CallScriptFunction  <string> (New with Left 4 Dead 2) !FGD
Execute a VScript function in the scope of the receiving entity.
SetLocalOrigin  <string> (New with Portal 2) !FGD
Set this entity's origin in the map.
SetLocalAngles  <string> (New with Portal 2) !FGD
Set this entity's angles in the map.

Outputs

DynamicProp:

OnAnimationBegun
Fired when an animation begins.
OnAnimationDone
Fired when an animation finishes.

BreakableProp:

OnTakeDamage
Fired when damage is taken.
OnPhysCannonAnimatePreStarted
Fired when prop starts its ACT_PHYSCANNON_ANIMATE_PRE activity. Caused by the object being picked up by the gravity gun.
OnPhysCannonAnimatePullStarted
Fired when prop has started its ACT_PHYSCANNON_ANIMATE activity. ACT_PHYSCANNON_ANIMATE_PRE plays once, then ACT_PHYSCANNON_ANIMATE starts looping.
OnPhysCannonDetach
Fired when prop has started its ACT_PHYSCANNON_DETACH activity (caused by the gravity gun ripping it from a wall).
OnPhysCannonAnimatePostStarted
Fired when prop has started its ACT_PHYSCANNON_ANIMATE_POST activity (caused by the player letting the prop go from the gravity gun).
OnPhysCannonPullAnimFinished
Fired when prop has finished all gravity gun-related animations.

Breakable:

OnBreak
Fired when this object breaks. !activator is whatever breaks the object.
OnHealthChanged  <float>
Fired whenever the health of the breakable has increased or decreased. This output automatically puts the new health amount as a decimal percent (e.g. 45% = 0.45) into the parameter box for inputs, if the mapper does not override the parameter with something else.

Model:

OnIgnite
Fired when the entity catches fire, such as from an env_entity_igniter or the Ignite inputs.
OnFizzled  (New with Portal 2)
Fired when this entity is fizzled by a fizzler or any other means. (Except the Dissolve input. Use SilentDissolve instead.)

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.
OnKilled  (New with Left 4 Dead)
This output fires when the entity is killed and removed from the game. <Left 4 Dead> only.

See also

  • Prop Types Overview
  • Prop Footsteps - A tutorial that provides essential code for when players walk on entities like this, it's not ignored during footstep sound computation.