mirror of
https://github.com/godotengine/godot.git
synced 2024-12-27 11:24:59 +08:00
17ad6df56d
This can be used to make particles disappear when colliding, rather than bouncing around or sticking to surfaces. This is useful for rain particles which should not be able to go through floors/ceilings, but shouldn't stick to surfaces either.
60 lines
4.8 KiB
XML
60 lines
4.8 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
|
||
<class name="GPUParticlesCollisionHeightField3D" inherits="GPUParticlesCollision3D" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
|
||
<brief_description>
|
||
Real-time heightmap-shaped 3D particle attractor affecting [GPUParticles3D] nodes.
|
||
</brief_description>
|
||
<description>
|
||
Real-time heightmap-shaped 3D particle attractor affecting [GPUParticles3D] nodes.
|
||
Heightmap shapes allow for efficiently representing collisions for convex and concave objects with a single "floor" (such as terrain). This is less flexible than [GPUParticlesCollisionSDF3D], but it doesn't require a baking step.
|
||
[GPUParticlesCollisionHeightField3D] can also be regenerated in real-time when it is moved, when the camera moves, or even continuously. This makes [GPUParticlesCollisionHeightField3D] a good choice for weather effects such as rain and snow and games with highly dynamic geometry. However, since heightmaps cannot represent overhangs, [GPUParticlesCollisionHeightField3D] is not suited for indoor particle collision.
|
||
[b]Note:[/b] [member ParticlesMaterial.collision_mode] must be [constant ParticlesMaterial.COLLISION_RIGID] or [constant ParticlesMaterial.COLLISION_HIDE_ON_CONTACT] on the [GPUParticles3D]'s process material for collision to work.
|
||
[b]Note:[/b] Particle collision only affects [GPUParticles3D], not [CPUParticles3D].
|
||
</description>
|
||
<tutorials>
|
||
</tutorials>
|
||
<members>
|
||
<member name="extents" type="Vector3" setter="set_extents" getter="get_extents" default="Vector3(1, 1, 1)">
|
||
The collision heightmap's extents in 3D units. To improve heightmap quality, [member extents] should be set as small as possible while covering the parts of the scene you need.
|
||
</member>
|
||
<member name="follow_camera_enabled" type="bool" setter="set_follow_camera_enabled" getter="is_follow_camera_enabled" default="false">
|
||
If [code]true[/code], the [GPUParticlesCollisionHeightField3D] will follow the current camera in global space. The [GPUParticlesCollisionHeightField3D] does not need to be a child of the [Camera3D] node for this to work.
|
||
Following the camera has a performance cost, as it will force the heightmap to update whenever the camera moves. Consider lowering [member resolution] to improve performance if [member follow_camera_enabled] is [code]true[/code].
|
||
</member>
|
||
<member name="resolution" type="int" setter="set_resolution" getter="get_resolution" enum="GPUParticlesCollisionHeightField3D.Resolution" default="2">
|
||
Higher resolutions can represent small details more accurately in large scenes, at the cost of lower performance. If [member update_mode] is [constant UPDATE_MODE_ALWAYS], consider using the lowest resolution possible.
|
||
</member>
|
||
<member name="update_mode" type="int" setter="set_update_mode" getter="get_update_mode" enum="GPUParticlesCollisionHeightField3D.UpdateMode" default="0">
|
||
The update policy to use for the generated heightmap.
|
||
</member>
|
||
</members>
|
||
<constants>
|
||
<constant name="RESOLUTION_256" value="0" enum="Resolution">
|
||
Generate a 256×256 heightmap. Intended for small-scale scenes, or larger scenes with no distant particles.
|
||
</constant>
|
||
<constant name="RESOLUTION_512" value="1" enum="Resolution">
|
||
Generate a 512×512 heightmap. Intended for medium-scale scenes, or larger scenes with no distant particles.
|
||
</constant>
|
||
<constant name="RESOLUTION_1024" value="2" enum="Resolution">
|
||
Generate a 1024×1024 heightmap. Intended for large scenes with distant particles.
|
||
</constant>
|
||
<constant name="RESOLUTION_2048" value="3" enum="Resolution">
|
||
Generate a 2048×2048 heightmap. Intended for very large scenes with distant particles.
|
||
</constant>
|
||
<constant name="RESOLUTION_4096" value="4" enum="Resolution">
|
||
Generate a 4096×4096 heightmap. Intended for huge scenes with distant particles.
|
||
</constant>
|
||
<constant name="RESOLUTION_8192" value="5" enum="Resolution">
|
||
Generate a 8192×8192 heightmap. Intended for gigantic scenes with distant particles.
|
||
</constant>
|
||
<constant name="RESOLUTION_MAX" value="6" enum="Resolution">
|
||
Represents the size of the [enum Resolution] enum.
|
||
</constant>
|
||
<constant name="UPDATE_MODE_WHEN_MOVED" value="0" enum="UpdateMode">
|
||
Only update the heightmap when the [GPUParticlesCollisionHeightField3D] node is moved, or when the camera moves if [member follow_camera_enabled] is [code]true[/code]. An update can be forced by slightly moving the [GPUParticlesCollisionHeightField3D] in any direction.
|
||
</constant>
|
||
<constant name="UPDATE_MODE_ALWAYS" value="1" enum="UpdateMode">
|
||
Update the heightmap every frame. This has a significant performance cost. This update should only be used when geometry that particles can collide with changes significantly during gameplay.
|
||
</constant>
|
||
</constants>
|
||
</class>
|