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Fix 3D moving platform logic

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Same thing that was already done in 2D, applies moving platform motion
by using a call to move_and_collide that excludes the platform itself,
instead of making it part of the body motion.

Helps with handling walls and slopes correctly when the character walks
on the moving platform.

Also made some minor adjustments to the 2D version and documentation.

Co-authored-by: fabriceci <fabricecipolla@gmail.com>
This commit is contained in:
PouleyKetchoupp 2021-08-09 18:16:45 -07:00
parent f3ddc14d38
commit ec9fed69f4
20 changed files with 118 additions and 61 deletions
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1
doc/classes/CharacterBody2D.xml
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@ -79,6 +79,7 @@
Moves the body based on [member linear_velocity]. If the body collides with another, it will slide along the other body rather than stop immediately. If the other body is a [CharacterBody2D] or [RigidBody2D], it will also be affected by the motion of the other body. You can use this to make moving and rotating platforms, or to make nodes push other nodes.
This method should be used in [method Node._physics_process] (or in a method called by [method Node._physics_process]), as it uses the physics step's [code]delta[/code] value automatically in calculations. Otherwise, the simulation will run at an incorrect speed.
Modifies [member linear_velocity] if a slide collision occurred. To get detailed information about collisions that occurred, use [method get_slide_collision].
When the body touches a moving platform, the platform's velocity is automatically added to the body motion. If a collision occurs due to the platform's motion, it will always be first in the slide collisions.
</description>
</method>
</methods>

1
doc/classes/CharacterBody3D.xml
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@ -65,6 +65,7 @@
Moves the body based on [member linear_velocity]. If the body collides with another, it will slide along the other body rather than stop immediately. If the other body is a [CharacterBody3D] or [RigidBody3D], it will also be affected by the motion of the other body. You can use this to make moving and rotating platforms, or to make nodes push other nodes.
This method should be used in [method Node._physics_process] (or in a method called by [method Node._physics_process]), as it uses the physics step's [code]delta[/code] value automatically in calculations. Otherwise, the simulation will run at an incorrect speed.
Modifies [member linear_velocity] if a slide collision occurred. To get detailed information about collisions that occurred, use [method get_slide_collision].
When the body touches a moving platform, the platform's velocity is automatically added to the body motion. If a collision occurs due to the platform's motion, it will always be first in the slide collisions.
</description>
</method>
</methods>

2
doc/classes/PhysicsServer3D.xml
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@ -572,6 +572,8 @@
<argument index="3" name="infinite_inertia" type="bool" />
<argument index="4" name="margin" type="float" default="0.001" />
<argument index="5" name="result" type="PhysicsTestMotionResult3D" default="null" />
<argument index="6" name="exclude_raycast_shapes" type="bool" default="true" />
<argument index="7" name="exclude" type="Array" default="[]" />
<description>
Returns [code]true[/code] if a collision would result from moving in the given direction from a given point in space. Margin increases the size of the shapes involved in the collision detection. [PhysicsTestMotionResult3D] can be passed to return additional information in.
</description>