Property index.
| Idx_Enabled | bool - If false particle system isn't drawn or updated. |
| Idx_Duration | float - Duration of a cycle of the particle system |
| Idx_Looping | bool - If true, the system restarts at the end of each cycle |
| Idx_LifeSpanInputType | ParticleInputType (int) - Specifies the method of lifespan input for how long a particle lives, in seconds |
| Idx_LifeSpanValue | float - data for Value mode |
| Idx_LifeSpanMinMax | vec2f - data for MinMax mode |
| Idx_LifeSpanCurve | vector - data for Curve mode |
| Idx_StartSpeedInputType | ParticleInputType (int) - Specifies the method of particle start speed input |
| Idx_StartSpeedValue | float - data for Value mode |
| Idx_StartSpeedMinMax | vec2f - data for MinMax mode |
| Idx_StartSpeedCurve | vector - data for Curve mode |
| Idx_StartSizeInputType | ParticleInputType (int) - Specifies the method of particle start size input |
| Idx_StartSizeValue | float - data for Value mode |
| Idx_StartSizeMinMax | vec2f - data for MinMax mode |
| Idx_StartSizeCurve | vector - data for Curve mode |
| Idx_StartRotationInputType | ParticleInputType (int) - Specifies the method of initial particle rotation input |
| Idx_StartRotationValue | float - data for Value mode |
| Idx_StartRotationMinMax | vec2f - data for MinMax mode |
| Idx_StartRotationCurve | vector - data for Curve mode |
| Idx_RotationDirectionRandom | bool - Randomise rotation direction |
| Idx_LifetimeGradient | link - Specifies a gradient to use to control the lifetime of particles |
| Idx_MaxParticles | int - Maximum number of particles in flight at once. Special value of zero means no limit to the number of particles. |
| Idx_MainTexture | link - Specifies a texture containing particle sprite data to use for rendering the particles |
| Idx_BlendMode | BlendMode (int) - Specifies the particle renderer blend mode |
| Idx_SmoothDist | float - When part of a particle is within this distance of some background scene geoemtry, it will be faded over this distance to give a smoother appearance at intersections. |
| Idx_TilingMode | TilingMode (int) - Specifies how to use the texture sprite sheet |
| Idx_TextureTilesNumber | vec2i - for all tiling modes except None, specifies the number of tiles in the sheet (X,Y) |
| Idx_AnimationSpeed | float - For animated tiling modes, specifies the speed multiplier for texture sheet animation |
| Idx_BillboardMode | BillboardMode (int) - Specify how the particles should be aligned |
| Idx_OrientU | bool - |
| Idx_OrientV | bool - |
| Idx_FlipU | bool - |
| Idx_FlipV | bool - |
| Idx_WorldSpace | bool - |
| Idx_ScaleMode | ScaleMode (int) - |
| Idx_Lit | bool - |
| Idx_AlphaOrderOffset | float - |
| Idx_EmitRate | float - Rate at which particles are emitted, in particles-per-second. |
| Idx_Bursts | vector - |
| Idx_EmitShape | EmitShape (int) - Controls the initial position and direction of an emitted particle. |
| Idx_EmitShapeAngle | float - For Cone and Circle, the angle range of the shape |
| Idx_EmitMesh | link - For Mesh, link to the mesh to use |
| Idx_EmitShapeSize | float - Size of shape within which particles are emitted at random positions. |
| Idx_EmitShapeShell | bool - If true, the particles are emitted from the shell of the shape rather than within it. |
| Idx_EmitRandomDirection | bool - If false, the particles are emitted in directions relating to the shape, if true the directions are completely random. |
| Idx_VelocityOverLifetimeEnabled | bool - |
| Idx_VelocityOverLifetime | vector - |
| Idx_VelocityOverLifetimeMultiplier | float - |
| Idx_VelocityLimitOverLifetimeEnabled | bool - |
| Idx_VelocityLimitOverLifetime | vector - |
| Idx_Damping | float - |
| Idx_SizeOverLifetimeEnabled | bool - |
| Idx_SizeOverLifetime | vector - |
| Idx_SizeOverVelocityEnabled | bool - |
| Idx_SizeOverVelocity | vector - |
| Idx_SizeOverVelocityRange | vec2f - |
| Idx_RotationSpeedOverLifetimeEnabled | bool - |
| Idx_RotationSpeedOverLifetime | vector - |
| Idx_Force | vec3f - constant force applied to particles during their lifetime. |