git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@3489 fc73d0e0-1445-4013-8a0c-d673dee63da5
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Example:
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r_part blah
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{
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texture textures/particles/myimage.tga
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tcoords 0 0 64 64 64
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die 2
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scalefactor 1
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scale 20
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alpha 0.5
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rgb 255 0 0
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rgbdelta 0 128 128
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spawnmode ball
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spawnorg 32
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}
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will give transparent (0.5) red particles that will fade to fully white when they go fully transparent 2 seconds later.
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they will spawn within a ball of 32 units radius.
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texture <TEXTURENAME>
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specifies to use an image named TEXTURENAME for this effect.
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tcoords <s1> <t1> <s2> <t2> [tscale] [rsmax] [rsstep]
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specifies to use a subsection of the image.
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if tscale is set, all units are divided by this. it is the virtual size of your texture. So a value of 1 means that your texture coords must be between 0 and 1. But if it properly matches your texture's size, the coords are in pixels.
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if rsmax is present, each particle will use a random image. These images must be on a single row in your particle font.
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rsstep specifies the stride (gap from one to the next) in your particle font, and is only needed if rsmax is present and greater than 1.
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rotationstart <min> [max]
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the particle will start with a rotation rotated between min and max.
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if max is missing, the particle will always start with the min value.
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beamtexstep <value>
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only valid if the effect is a beam.
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specifies the number of quake units per beam texture repitition.
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beamtexspeed <value>
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only valid if the effect is a beam.
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controls how fast the texture scrolls on the beam.
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scale <min> [max]
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particles will start with a diameter of this many quake units.
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actual scale will be randomly chosen between min and max (max defaults to equal min is missing)
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scalerand <extra>
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obsolete
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overrides the scale max value
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actual scale will be now be randomly chosen between min and min+extra
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scalefactor <frac>
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controls how the particle scales with distance.
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1 makes the particle scale the same as anything else
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0 makes the particle not change size no matter how far it is
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scaledelta <value>
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controls how the particle scales over time
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specifies the change in the particle scale per second.
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step <min> <max>
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trails/beams only
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specifies the distance between each particle in the trail (or beam).
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count <min> <max>
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point/box effects only (not trails or beams)
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specifies how many particles are spawned per effect (some classic effects contain an extra scaler which is multiplied by the resulting value)
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alpha <value>
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specifies the initial alpha value of the effect
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alphadelta <value>
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specifies how much the alpha value of the effect changes per second (subtracted)
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die <value>
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specifies the maximum age of the particle
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diesubrand <value>
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specifies the maximum starting age of the particle.
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basically the particle will live up to this much less time. the alpha value will also be aged by the amount chosen by this value
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randomvel <horiz> [vert]
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controls how fast the particle moves when it spawns. This works regardless of any requested velocities.
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if vert is not specified, horiz is used instead.
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veladd <value>
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controls how much of the effect's spawn velocity is used, can be greater than 1, or negative.
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orgadd <value>
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biases how much to add to the starting origin relative to the requested velocity.
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friction <1> <2> <3>
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FIXME
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gravity <value>
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amount that the particle's velocity changes per second, in quake units.
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clipbounce <value>
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how much of the particle's velocity to use if the particle is clipped. See cliptype.
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Defaults to 0.8
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cliptype <effectname>
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Specifies which new effect to spawn when the particle hits something.
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The origin and velocity of the particle are used to spawn the new effect.
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The clipbounce value is used as a scaler for the reflected velocity.
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If the effect named is the effect itself, the particle will merely bounce, instead of spawning a new effect.
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FIXME: make default to bounce if clipbounce is set without cliptype.
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clipcount <count>
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The scaler to use for the number of particles to spawn upon a clip event.
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Only valid in conjunction with cliptype.
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assoc <effectname>
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Specifies another effect to spawn at the same time that this effect is spawned.
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Thus allowing two sets of particles from one effect.
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inwater <effectname>
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Specifies a replacement effect to use when this one is spawned underwater.
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assoc used is the replacement effect. the assoc value from the replaced effect is ignored.
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colorindex <index> [rand]
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Specifies a palette index to spawn the particle with.
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The index used is between index and index+rand.
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overrides the normal starting colours.
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colorrand <rand>
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obsolete.
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replaces the [rand] part of the colorindex setting.
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citracer
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only valid if colorindex is set.
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adds a palette index between 0 and 3, based on the particle index in the effect or trail.
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red <value>
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green <value>
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blue <value>
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rgb <red> <green> <blue>
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rgb <value>
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Specifies the initial red, green, and/or blue values for each particle.
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Fully opaque is 255 or above.
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Values above 255 are valid, but will remain opaque until the value drops below 255 from the colour deltas.
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redrand <value>
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greenrand <value>
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bluerand <value>
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rgbrand <red> <green> <blue>
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rgbrand <value>
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Specifies how much extra red, green, and/or blue there may be for particles.
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The initial colour will be multiplied by this amount before addition.
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Each componant is separately randomized. EG, red might add nothing, while the full green is added, and only half the blue.
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Fully opaque is 255 or above.
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redrandsync <value>
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greenrandsync <value>
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bluerandsync <value>
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rgbrandsync <red> <green> <blue>
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rgbrandsync <value>
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Specifies how much extra red, green, and/or blue there may be for particles.
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The initial colour will be multiplied by this amount before addition.
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Componants are syncronised. EG, if the full amount of red is added, the full amount of green and blue will also be added.
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Fully opaque is 255 or above.
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reddelta <value>
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greendelta <value>
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bluedelta <value>
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rgbdelta <red> <green> <blue>
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rgbdelta <value>
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Specifies how much the red, green, and/or blue values of each particle change over time.
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The value 255 is the value required to go from opaque to invisible in 1 second.
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rgbdeltatime <value>
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Specifies for how long the particle may change colours for. After this many seconds, the particle may no longer change colours (delta becomes 0).
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rampmode <mode>
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mode may be one of:
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none: uses rgb+rand+sync+delta+scale+scaledelta values.
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absolute: the ramp overrides all colour+scale values. The effect moves from one absolute ramp index to the next.
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delta: uses rgb+rand+sync+scale, but not delta values. All delta values come from the colour ramp instead.
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if not none, the ramp index used is based upon the particle's age, its lifetime, and how many ramp elements there are.
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rampindexlist <idx1> [<idx2> [idx3 ...]]
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Scale used is the currently set scale value.
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Specifies a set of palette index values to use for the effect as part of the effect's colour ramp.
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rampindex <idx> <scale>
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Specifies an individual palette index value and particle scale to use for the effect as part of the effect's colour ramp
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ramp <red> <green> <blue> [alpha] [scale]
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Specifies a ramp index in rgb terms, regardless of palette.
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stains <value>
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How much the effect discolours the wall upon impact.
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The stained colour is based upon the colour of the particle upon impact.
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blend <mode>
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mode may be one of: add, subtract, blendcolour/blendcolor, blend
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if the texture used is actually a shader, this is ignored.
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spawnmode <mode> [arg1] [arg2]
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This affects how particles are positioned when they first spawn, and their initial velocities.
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for point effects, mode may be one of:
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circle: particles spawn within a ball with uniform distance from the center
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ball: particles spawn randomly within a ball.
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telebox: matches quake's telebox
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lavasplash: like chthon's lava splash
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uniformcircle: particles are spawned in a circle with uniform distance between and from the center. z=0.
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syncfield: particles spawn at predictable locations based upon time within a rough sphere. Only useful for effects that are regenerated+replaced every frame.
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distball:
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*default*: regular box. particles are spawned inside an axially aligned box.
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for trail effects, mode may be one of:
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spiral: particles are given velocities perpendicular to the direction based on the distance moved.
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tracer: particles spawn with alternating horizontal velocities (a wake effect).
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*default*: particles spawn as a regular trail.
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spawnparam1 <value>
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obsolete
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spawnparam2 <value>
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obsolete
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up <value>
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the particle's origin is moved upwards by this amount
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type <mode>
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How the particles look.
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mode may be:
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beam: valid only for trails. Particles form a single textured beam acting as nodes along it.
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spark: particles are lines, their length depending upon their speed.
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sparkfan: particles are non-planar triangle fans, their length depending upon their speed.
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texturedspark: textured particles are aligned along their direction of movement, their length depending upon their speed.
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decal: particles are spawned only upon bsp geometry. They are clipped by it.
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*default*: Particles are regular, rotating, 2d images.
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isbeam
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obsolete.
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please use 'type beam' instead.
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spawntime <value>
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spawnchance <value>
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emit <effectname>
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Specifies the effect to periodically emit.
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emitinterval <min>
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Particles will not emit additional effects for this duration after emitting one.
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emitintervalrand <extra>
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FIXME: fold into emitinterval
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emitstart <seconds>
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Prevents the particle from emitting anything for this duration when it first spawns.
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spawnorg <horiz> [vert]
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spawnvel <horiz> [vert]
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perframe
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apply inverse frametime to count (causes emits to be per frame)
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averageout
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average trail points from start to end, useful with t_lightning, etc
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nostate
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Causes the particle system to ignore all state information.
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nospreadfirst
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don't randomize org/vel for first generated particle
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nospreadlast
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don't randomize org/vel for last generated particle
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