Encog's Particle Machine

Particles are a special 2D effect that can be created in Second Life. The particle machine allows you to specify particle effects and see them created in the Second Life world. If you are not logged into Second Life, this page is of little use. However, if you are logged in you can quickly see how the different parameters create different particle effects. You can see the particle effect machine inside of the Second Life world at the following location http://slurl.com/secondlife/Encogia/187/196/22.
Encog's Second Life Particle Machine

Identify

To use the particle emitter you must be standing near it in Second Life. Enter your avatar name, exactly as it appears in Second Life.

Avatar Name: *

This avatar must be near the particle emitter, or the particle emitter will not be activated.

Particle Pattern Shape - PSYS_SRC_PATTERN

Choose one of the following to define the pattern shape of the particle field.

Flags - PSYS_PART_FLAGS

The following flags define how the particle effect will look. Choose none or many.

PSYS_PART_BOUNCE_MASK - Bounce on object's z-axis.

PSYS_PART_WIND_MASK - Particles are moved by wind.

PSYS_PART_INTERP_COLOR_MASK - Colors fade from start to end.

PSYS_PART_INTERP_SCALE_MASK - Scale fades from beginning to end.

PSYS_PART_FOLLOW_SRC_MASK - Particles follow the emitter.

PSYS_PART_FOLLOW_VELOCITY_MASK - Particles are created at the velocity of the emitter.

PSYS_PART_TARGET_POS_MASK - Particles follow the target.

PSYS_PART_EMISSIVE_MASK - Particles are self-lit (glow).

PSYS_PART_TARGET_LINEAR_MASK - Undocumented--Sends particles in straight line?.

Burst

Particles come in bursts. These fields allow you to define these bursts.

Burst Rate: *

PSYS_SRC_BURST_RATE - How many seconds between bursts.

Burst Particle Count: *

PSYS_SRC_BURST_PART_COUNT - How many particles in each burst.

Burst Particle Radious: *

PSYS_SRC_BURST_RADIUS - How far should the particles start out from the emitter.

Burst Particle Min Speed: *

PSYS_SRC_BURST_SPEED_MIN - Minimum speed for particles.

Burst Particle Max Speed: *

PSYS_SRC_BURST_SPEED_MAX - Maximum speed for particles.

Particle Properties

There are several properties you can set for the actual particles.

Particle Texture:

PSYS_SRC_TEXTURE - UUID of the desired particle texture, or leave blank.

Particle Max Age: *

PSYS_PART_MAX_AGE - Maximum time to live for a particle.

Particle Start Alpha: *

PSYS_PART_START_ALPHA - Starting alpha(transparency) for the particles. 1.0 is opague, 0.0 is invisable.

Particle Ending Alpha: *

PSYS_PART_END_ALPHA - Ending alpha(transparency) for the particles. 1.0 is opague, 0.0 is invisable.

Angle Begin: *

PSYS_SRC_ANGLE_BEGIN - Specifies a starting angle (degrees) for the angular cone types.

Angle End: *

PSYS_SRC_ANGLE_END - Specifies an ending angle (degrees) for the angular types.

Particle Start Size Vector

This vector defines the starting x, y and z sizes of the particles. (PSYS_PART_START_SCALE)

X-Size: *

Y-Size: *

Z-Size: *

Particle End Size Vector

This vector defines the ending x, y and z sizes of the particles. (PSYS_PART_END_SCALE)

X-Size: *

Y-Size: *

Z-Size: *

Particle Acceleration

This vector defines the x, y and z acceleration of the particles. (PSYS_SRC_ACCEL)

X-Acceleration: *

Y-Acceleration: *

Z-Acceleration: *

Starting Color

This vector defines the red, green and blue color that the particles start at. Values between 0 and 1. (PSYS_PART_START_COLOR)

Starting Color Red: *

Starting Color Green: *

Starting Color Blue: *

Ending Color

This vector defines the red, green and blue color that the particles end at. Values between 0 and 1. (PSYS_PART_END_COLOR)

Ending Color Red: *

Ending Color Green: *

Ending Color Blue: *

Omega

The omega specifies the rotation spin on each particle. (PSYS_SRC_OMEGA)

Omega X: *

Omega Y: *

Omega Z: *

Your script is as follows:

generalParticleEmitterOn()
{
llParticleSystem([
  PSYS_PART_FLAGS , 0 
    |PSYS_PART_WIND_MASK
    |PSYS_PART_INTERP_COLOR_MASK
    |PSYS_PART_INTERP_SCALE_MASK
    |PSYS_PART_FOLLOW_SRC_MASK
    |PSYS_PART_FOLLOW_VELOCITY_MASK
    |PSYS_PART_EMISSIVE_MASK
  ,PSYS_SRC_PATTERN,PSYS_SRC_PATTERN_ANGLE_CONE
  ,PSYS_SRC_TEXTURE,""
  ,PSYS_SRC_MAX_AGE,0.0
  ,PSYS_PART_MAX_AGE,(float)4.0
  ,PSYS_SRC_BURST_RATE,(float)0.5
  ,PSYS_SRC_BURST_PART_COUNT,6
  ,PSYS_SRC_BURST_RADIUS,(float)10
  ,PSYS_SRC_BURST_SPEED_MIN,(float)0.4
  ,PSYS_SRC_BURST_SPEED_MAX,(float)0.5
  ,PSYS_SRC_ACCEL,<0,0,1>
  ,PSYS_PART_START_COLOR,<1,0,0>
  ,PSYS_PART_END_COLOR,<1,0,0>
  ,PSYS_PART_START_ALPHA,(float)1
  ,PSYS_PART_END_ALPHA,(float)1
  ,PSYS_PART_START_SCALE,<0.25,0.25,0.25>
  ,PSYS_PART_END_SCALE,<1.5,1.5,1.5>
  ,PSYS_SRC_ANGLE_BEGIN,0 * DEG_TO_RAD
  ,PSYS_SRC_ANGLE_END,360 * DEG_TO_RAD
  ,PSYS_SRC_OMEGA,<0,0,0>
  ]);
}

generalParticleEmitterOff()
{
  llParticleSystem([]);
}

default
{
  state_entry()
  {
    generalParticleEmitterOn();
  }

  touch_start( integer num )
  {
    state off;
  }
}

state off
{
  state_entry()
  {
    generalParticleEmitterOff();
  }

  touch_start( integer num )
  {
    state default;
  }
}

Encog's Particle Machine | Heaton Research

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