Env quadraticbeam: Difference between revisions
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Important:This entity has no additional KIO other than those that CBaseEntity already offers! Values listed under 'Fields' can only be accessed with an external plugin, or the NetProp manager found in certain VScript-supported titles (
and 
).
(Add bigger note about netprops, slightly better grammar and more detailed info, expand VScript example.) |
(Every entity has CBaseEntity kio available so I listed only few notable ones that are more useful for this entity. Not sure what better word than kio to use instead of writing out all. alpha input may also be worth noting but haven't tested it) |
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| Line 4: | Line 4: | ||
{{CD|C_QuadraticBeam|game=client side|base=C_BaseEntity|file1=[https://github.com/ValveSoftware/source-sdk-2013/blob/master/mp/src/game/client/c_effects.cpp#L1500 c_effects.cpp]}} | {{CD|C_QuadraticBeam|game=client side|base=C_BaseEntity|file1=[https://github.com/ValveSoftware/source-sdk-2013/blob/master/mp/src/game/client/c_effects.cpp#L1500 c_effects.cpp]}} | ||
{{this is a|[[entity]]|name=env_quadraticbeam}} It is a duplicate of the {{ent|beam}} entity, but with ability to arc by using a quadratic equation. It can be used to produce a similar effect to the {{gmod}} physics gun. The formula used to form the curve can be found [https://github.com/ValveSoftware/source-sdk-2013/blob/0d8dceea4310fde5706b3ce1c70609d72a38efdf/mp/src/game/client/beamdraw.cpp#L1489 here]. | {{this is a|[[entity]]|name=env_quadraticbeam}} It is a duplicate of the {{ent|beam}} entity, but with ability to arc by using a quadratic equation. It can be used to produce a similar effect to the {{gmod}} physics gun. The formula used to form the curve can be found [https://github.com/ValveSoftware/source-sdk-2013/blob/0d8dceea4310fde5706b3ce1c70609d72a38efdf/mp/src/game/client/beamdraw.cpp#L1489 here]. | ||
{{Important| | {{Important|This entity has no additional KIO other than those that [[CBaseEntity]] already offers! Values listed under 'Fields' can only be accessed with an external plugin, or the NetProp manager found in certain [[VScript]]-supported titles ({{tf2}} and {{l4d2}}).}} | ||
== Fields == | == Fields == | ||
| Line 12: | Line 12: | ||
{{DEFINE_FIELD|m_flWidth|FIELD_FLOAT}} | {{DEFINE_FIELD|m_flWidth|FIELD_FLOAT}} | ||
== Keyvalues == | == Notable KIO == | ||
=== Keyvalues === | |||
{{KV|Origin|intn=origin|vector|Start point of the beam}} | {{KV|Origin|intn=origin|vector|Start point of the beam}} | ||
== Inputs == | === Inputs === | ||
{{IO|Color|param=rgb|Changes color}} | {{IO|Color|param=rgb|Changes color}} | ||
Revision as of 10:42, 29 August 2024
 Class hierarchy
|
|---|
| CEnvQuadraticBeam |
| effects.cpp
|
| Class hierarchy
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|---|
| client side |
| C_QuadraticBeam |
| c_effects.cpp
|
env_quadraticbeam is an entity available in all 
Source games. It is a duplicate of the beam entity, but with ability to arc by using a quadratic equation. It can be used to produce a similar effect to the 
physics gun. The formula used to form the curve can be found here.
Important:This entity has no additional KIO other than those that CBaseEntity already offers! Values listed under 'Fields' can only be accessed with an external plugin, or the NetProp manager found in certain VScript-supported titles ( and ).Fields
m_targetPosition <FIELD_POSITION_VECTOR>
- END point
m_controlPosition <FIELD_POSITION_VECTOR>
- CONTROL point (see picture)
m_scrollRate <FIELD_FLOAT>
- Must be value between -4, 4
m_flWidth <FIELD_FLOAT>
Notable KIO
Keyvalues
- Origin (origin) <vector>
- Start point of the beam
Inputs
- Color <color255>
- Changes color
Spawning via vscript example
function SpawnQuadBeam(start, end, control, color="255 0 0", model="sprites/laserbeam.spr") {
// precache the beam sprite
PrecacheModel(model)
// spawn the beam and set the start point
local ent = SpawnEntityFromTable("env_quadraticbeam", { origin = start })
// set the end point for the beam
NetProps.SetPropVector(ent, "m_targetPosition", end)
// set the control point for the curve
NetProps.SetPropVector(ent, "m_controlPosition", control)
NetProps.SetPropFloat(ent, "m_scrollRate", 2)
NetProps.SetPropFloat(ent, "m_flWidth", 5)
// set the beam color
DoEntFire("!self", "color", color, 0, null, ent)
// set the beam sprite
ent.SetModel(model)
}
//Draw a beam from the players origin point to the nearest prop_dynamic in a 2048hu radius
local start_pos = GetListenServerHost().GetOrigin()
local end_pos = Entities.FindByClassnameNearest("prop_dynamic", eye_pos, 2048)
//spawn our beam with a control value of 4
SpawnQuadBeam(start_pos, end_pos, 4)