A nice, smooth particle system for chimneys and other smoking objects. It has white smoke.
// Keknehv Psaltery's Particle Script v1.1
// 1.0 -- 5/30/05
// 1.1 -- 6/17/05
// This script may be used in anything you choose, including and not limited to commercial products.
// Just copy the MakeParticles() function; it will function without any other variables in a different script
// ( You can, of course, rename MakeParticles() to something else, such as StartFlames() )
// This script is basically an llParticleSystem() call with comments and formatting. Change any of the values
// that are listed second to change that portion. Also, it is equipped with a touch-activated off button,
// for when your particles go haywire and cause everyone to start yelling at you.
// Contact Keknehv Psaltery if you have questions or comments.
MakeParticles() //This is the function that actually starts the particle system.
PSYS_PART_FLAGS , 0 //Comment out any of the following masks to deactivate them
//| 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?
//PSYS_SRC_TARGET_KEY , NULL_KEY, //Key of the target for the particles to head towards
//This one is particularly finicky, so be careful.
//Choose one of these as a pattern:
//PSYS_SRC_PATTERN_DROP Particles start at emitter with no velocity
//PSYS_SRC_PATTERN_EXPLODE Particles explode from the emitter
//PSYS_SRC_PATTERN_ANGLE Particles are emitted in a 2-D angle
//PSYS_SRC_PATTERN_ANGLE_CONE Particles are emitted in a 3-D cone
//PSYS_SRC_PATTERN_ANGLE_CONE_EMPTY Particles are emitted everywhere except for a 3-D cone
,PSYS_SRC_TEXTURE, "2ca57748-4944-de53-b301-8d0efbafb2c6" //UUID of the desired particle texture
,PSYS_PART_MAX_AGE, 5.0 //Lifetime, in seconds, that a particle lasts
,PSYS_SRC_BURST_RATE, 0.05 //How long, in seconds, between each emission
,PSYS_SRC_BURST_PART_COUNT, 1 //Number of particles per emission
,PSYS_SRC_BURST_RADIUS, 5.0 //Radius of emission
,PSYS_SRC_BURST_SPEED_MIN, 1.5 //Minimum speed of an emitted particle
,PSYS_SRC_BURST_SPEED_MAX, 2.0 //Maximum speed of an emitted particle
,PSYS_SRC_ACCEL, <0.0,0.0,0.8> //Acceleration of particles each second
,PSYS_PART_START_COLOR, <0.8,0.8,0.8> //Starting RGB color
,PSYS_PART_END_COLOR, <0.2,0.2,0.2> //Ending RGB color, if INTERP_COLOR_MASK is on
,PSYS_PART_START_ALPHA, 0.9 //Starting transparency, 1 is opaque, 0 is transparent.
,PSYS_PART_END_ALPHA, 0.0 //Ending transparency
,PSYS_PART_START_SCALE, <0.8,0.8,0.0> //Starting particle size
,PSYS_PART_END_SCALE, <4.3,4.3,0.0> //Ending particle size, if INTERP_SCALE_MASK is on
,PSYS_SRC_ANGLE_BEGIN, -.3 //Inner angle for ANGLE patterns
,PSYS_SRC_ANGLE_END, .3 //Outer angle for ANGLE patterns
,PSYS_SRC_OMEGA, <0.0,0.0,0.0> //Rotation of ANGLE patterns, similar to llTargetOmega()
MakeParticles(); //Start making particles
touch_start( integer num ) //Turn particles off when touched
state off; //Switch to the off state
llParticleSystem(); //Stop making particles
touch_start( integer num ) //Turn particles back on when touched