LlMakeFountain

Make a fountain of particles

• This function causes the script to sleep for 0.1 seconds.
• This function has been deprecated, please use llParticleSystem instead.

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Beginning in 1.14, the simulator will be using llParticleSystem to emulate legacy llMakeFountain particles.

 
llMakeFountain(integer particle_count,
              float particle_scale,
              float particle_speed,
              float particle_lifetime,
              float source_cone,
              integer source_bounce,
              string source_texture_id,
              vector local_offset,
              vector bounce_offset);
 

 
fakeMakeFountain(integer particle_count, float particle_scale, float particle_speed,
                float particle_lifetime, float source_cone, integer bounce,
                string source_texture_id, vector local_offset, vector bounce_offset)
{
//      local_offset is ignored
//      bounce is ignored
//      bounce_offset is ignored
    llParticleSystem([
        PSYS_PART_FLAGS,            PSYS_PART_INTERP_COLOR_MASK | PSYS_PART_INTERP_SCALE_MASK | PSYS_PART_WIND_MASK | PSYS_PART_BOUNCE_MASK | PSYS_PART_EMISSIVE_MASK,
        PSYS_SRC_PATTERN,           PSYS_SRC_PATTERN_ANGLE_CONE,
        PSYS_PART_START_COLOR,      <1.0, 1.0, 1.0>,
        PSYS_PART_END_COLOR,        <1.0, 1.0, 1.0>,
        PSYS_PART_START_ALPHA,      0.50,
        PSYS_PART_END_ALPHA,        0.25,
        PSYS_PART_START_SCALE,      <particle_scale/1.5, particle_scale/1.5, 0.0>,
        PSYS_PART_END_SCALE,        <0.0, 0.0, 0.0>,
        PSYS_PART_MAX_AGE,          3.0,
        PSYS_SRC_ACCEL,             <1.0, 0.0, -4>,
        PSYS_SRC_TEXTURE,           source_texture_id,
        PSYS_SRC_BURST_RATE,        5/particle_count,
        PSYS_SRC_ANGLE_BEGIN,       0.0,
        PSYS_SRC_ANGLE_END,         source_cone*PI,
        PSYS_SRC_BURST_PART_COUNT,  1,
        PSYS_SRC_BURST_RADIUS,      0.0,
        PSYS_SRC_BURST_SPEED_MIN,   particle_speed,
        PSYS_SRC_BURST_SPEED_MAX,   particle_speed,
        PSYS_SRC_MAX_AGE,           particle_lifetime/2,
        PSYS_SRC_OMEGA,             <0.0, 0.0, 0.0>
    ]);
}
//    Known discrepancies:
//    1) The bounce level is not adjustable with the new particle system,
//       it will be fixed to 0
//    2) The original llMakeFountain has random particle lifetime, which cannot be
//       created in the current particle system via a single call
//    3) several values are not taken 'verbatim' in the original particle system
//       (velocity is not m/sec for instance, and number of particles seems to be
//       wildly off), these are approximated loosely in this simulation via basic
//       divisors, which may not work out the same in some scenarios
//    4) There is no way to duplicate the offset from the old functions within the
//       new particle system
 

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