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Document Bounce = 1.0 not being sufficient for infinite energy conservation #82968

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Feb 27, 2024
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Document Bounce = 1.0 not being sufficient for infinite energy conservation #82968

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1 change: 1 addition & 0 deletions doc/classes/PhysicalBone3D.xml
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Expand Up @@ -61,6 +61,7 @@
</member>
<member name="bounce" type="float" setter="set_bounce" getter="get_bounce" default="0.0">
The body's bounciness. Values range from [code]0[/code] (no bounce) to [code]1[/code] (full bounciness).
[b]Note:[/b] Even with [member bounce] set to [code]1.0[/code], some energy will be lost over time due to linear and angular damping. To have a [PhysicalBone3D] that preserves all its energy over time, set [member bounce] to [code]1.0[/code], [member linear_damp_mode] to [constant DAMP_MODE_REPLACE], [member linear_damp] to [code]0.0[/code], [member angular_damp_mode] to [constant DAMP_MODE_REPLACE], and [member angular_damp] to [code]0.0[/code].
</member>
<member name="can_sleep" type="bool" setter="set_can_sleep" getter="is_able_to_sleep" default="true">
If [code]true[/code], the body is deactivated when there is no movement, so it will not take part in the simulation until it is awakened by an external force.
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1 change: 1 addition & 0 deletions doc/classes/PhysicsMaterial.xml
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Expand Up @@ -14,6 +14,7 @@
</member>
<member name="bounce" type="float" setter="set_bounce" getter="get_bounce" default="0.0">
The body's bounciness. Values range from [code]0[/code] (no bounce) to [code]1[/code] (full bounciness).
[b]Note:[/b] Even with [member bounce] set to [code]1.0[/code], some energy will be lost over time due to linear and angular damping. To have a [PhysicsBody3D] that preserves all its energy over time, set [member bounce] to [code]1.0[/code], the body's linear damp mode to [b]Replace[/b] (if applicable), its linear damp to [code]0.0[/code], its angular damp mode to [b]Replace[/b] (if applicable), and its angular damp to [code]0.0[/code].
</member>
<member name="friction" type="float" setter="set_friction" getter="get_friction" default="1.0">
The body's friction. Values range from [code]0[/code] (frictionless) to [code]1[/code] (maximum friction).
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