Env quadraticbeam

This entity is not in the FGD by default.
It should not be put directly in a map because it is only configurable via code or vscript.

Class hierarchy
CEnvQuadraticBeam ↳CPointEntity ↳CBaseEntity
effects.cpp

Class hierarchy
client side
C_QuadraticBeam ↳C_BaseEntity
c_effects.cpp

env_quadraticbeam is an entity available in all Source games. Essentially, it is a duplicate of beam entity, but with ability to use quadratic equation, so it can use an arc form.

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 <color255RedirectInput/color32>

Changes color

Spawning via vscript example

function SpawnQuadBeam(start, end, control, color="255 0 0", model="sprites/laserbeam.spr") {
    PrecacheModel(model);

    local ent = SpawnEntityFromTable("env_quadraticbeam", {
        origin = start
    })

    NetProps.SetPropVector(ent, "m_targetPosition", end)
    NetProps.SetPropVector(ent, "m_controlPosition", control)
    NetProps.SetPropFloat(ent, "m_scrollRate", 2)
    NetProps.SetPropFloat(ent, "m_flWidth", 5)

    DoEntFire("!self", "color", color, 0, null, ent)

    ent.SetModel(model);
}

See Also

• Left_4_Dead_2/Script_Functions#CNetPropManager
• Team_Fortress_2/Scripting/Script_Functions#CNetPropManager
• beam
• env_beam