Particles (ParticleSpawner)

The particles get spawned in a spheroid area.

The particles get spawned in a cuboid area.

Defines the rotation around the y-Axis.

Defines the rotation around the x-Axis.

0 / 180 > at the same height as its origin

Down < - 90 + > Up

Defines the starting speed in the direction set by Yaw and Pitch.

The rotation only gets affected by the Animation/InitialAnimationFrame.

The particle always faces the camera.

Only the rotation around the z-Axis can additionally affect the rotation.

The particle only rotates around its y-Axis(Up-Down) to always face the camera.

Only the rotation around the z-Axis can additionally affect the rotation.

Similar to Billboard, only that the y-Axis always aligns with the velocity vector of the particle.

The particle's y-Axis always aligns with the velocity vector of the particle.

Attractors are used both in ParticleSpawner and ParticleSystem so depending where they are used they may have a different explanation:

Spawner: Offsets the centre of the Attractor from the centre of the ParticleSpawner.

System: Offsets the centre of the Attractor from the centre of the ParticleSpawnerGroup.

Sets an axis for the radial motion. Values can be mixed to change the direction of the axis. You can think of it as defining another position in a coordinate system originating from the centre of the attractor and then drawing a line through this origin and the newly defined point.

E.g.: If the x and y value is 1 it is exactly between the default x and y axis. If x = 2 and y = 1 the axis is 1/3 towards the y and 2/3 towards the x axis.

RadialImpulse can work without axis perfectly fine, while RadialTangentAcceleration and RadialTangentImpulse can cause some interesting effects.

Attractors are used both in ParticleSpawner and ParticleSystem so depending where they are used they may have a different explanation:

Spawner (Advanced, rarely used):

Defines how strong the attractor keeps its position, while the spawner gets moved. This movement for the attractor is individual for each particle, so the movement of the attractor is only stopped, when the particle gets spawned.

E.g.: The spawner moves with speed 1 towards +x and every 0.5 seconds a field of particles (1 x and 1 z max spawn offset) get spawned. The attractor has a TrailPositionMultiplier of 1 (no movement) and a RadialImpulse of -1 (movement towards the axis) and a RadialAxis y of 1. The first wave spawns at the starting position of the spawner and all the particles move towards the centre, while not following the motion of the spawner. The particles for the second wave would spawn with 0.5 +x offset from the prior wave, since the spawner moved, but the particles don't move now to the same place the first wave moved. They now move like the first wave to the centre of their own position, but yet again, don't get dragged with the continued motion of the spawner. The third wave now has 1 +x offset and acts like the second wave. If the TrailPositionMultiplier were 0.5, the particles would move half the speed with the spawner, since the attractor would move half the distance with the spawner and thus the centre the particles move towards gets moved with it.

Both:

• 0.0: Moves fully with its anchor.
• 0.5: Moves half the distance with its anchor.
• 1.0: Does not move with its anchor.

Defines how far the attractor takes effect. Leave empty for infinite range.

Defines the acceleration away from (positive) or towards (negative) the RadialAxis (if no axis: the attractor centre).

Defines the acceleration of rotation around the RadialAxis. High speed values will cause it to expand.

• Positive: clockwise
• Negative: anti-clockwise

Lets you define the acceleration along the x,y and z-Axis.

West < - x + > East

Down < - y + > Up

North < - z + > South

Defines a constant speed away from (positive) or towards (negative) the RadialAxis (if no axis: the attractor centre). Applied while the particle is inside the effective radius.

Defines a constant rotation speed around the RadialAxis, applied while the particle is inside the effective radius. High speed values will cause it to expand.

• Positive: clockwise
• Negative: anti-clockwise

Lets you define a constant speed along the x,y and z-Axis, applied while the particle is inside the effective radius.

West < - x + > East

Down < - y + > Up

North < - z + > South

Attractors are used both in ParticleSpawner and ParticleSystem so depending where they are used they may have a different explanation:

Spawner:

Defines the slowdown of the Particles. Used for air resistance. A value of 1 applies no damping, while values above 1 speed the particles up. If at least one value is defined, you should set the others too, since they will be treated as 0, if left undefined. Impulses from attractors are not affected, while InitialVelocity is affected.

System: Defines the slowdown of the ParticleSpawner.

The particles get blended linearly with the environment's background.

The particles get blended additively (lightens) with the background.

The particle fully covers the background and the lighter the colour the stronger a glow halo is applied to the particle borders.

Opacity values only cut off semitransparent pixels of the texture.

The particle distorts the background.

Defines how far away from the intersection the highlight still gets applied.

0 disables the highlight.

• #RRGGBB

• rgb(rrr, ggg, bbb)

Defines the colour that gets applied to the region for the highlight.

Reference to a common asset in the folder:

• Common/Particles/

Defines the texture used for the distortion. The texture gets tiled to avoid scale conflicts with Scale.

Defines the scale of the used texture.

If checked, randomly offsets the centre of the distortion texture per particle.

How fast the texture should get shifted along the x-Axis over time.

How fast the texture should get shifted along the y-Axis over time.

Defines how strong the distortion is.

Defines how the strength of the distortion evolves over time.

Defines what Block Type triggers the ParticleCollision.

Defines what to do when the ParticleCollision is triggered.

Overwrites how the rotation of the particle is influenced by the viewing camera or its motion.

Reference to a common asset in the folder:

• Common/Particles/

The texture used for the particle.

MUST ALWAYS BE DEFINED!

Sometimes the texture has multiple variants of the same texture. If this field isn't defined the whole texture is used for the particle. By defining the dimension of these frames you can cut the texture into smaller parts. To use other frames than the first (most top left) frame you need to change the values in FrameIndex.

Invalid sizes (0 or larger than the texture) are ignored and the whole texture is used.

Soft particles describe how the transparency of the particle changes near solid geometry.

Controls how quickly the particle fades near solid geometry. Higher values make the fade region thinner.

Distance from the camera where particle opacity starts to increase.

Distance from the camera where particle opacity reaches its configured value. Set both near fade distances to zero to disable the fade.

Distance from the camera where particle opacity starts to decrease.

Distance from the camera where particle opacity reaches zero. Set both far fade distances to zero to disable the fade.

If enabled, the texture between frames gets interpolated if the FrameIndex changes.

Controls the animation of the particles by listing all the frames. Values range from 0 to 100 since they refer to the percentage of its lifetime.

E.g.: If the lifetime is 2s and the added frame is 50, the frame is shown after 1s or 50% of its lifetime.

NEEDS AT LEAST ONE FRAME!

Contains the frame that is used if ParticleCollision is enabled and Action is set to LastFrame.

Flips the texture horizontally, vertically, both or none.

Controls side ratio of the texture.

Defines the base frame values for the particle animation.