<function name="CollisionRulesChanged" parent="Entity" type="classfunc"> <description> Declares that the collision rules of the entity have changed, and subsequent calls for <page>GM:ShouldCollide</page> with this entity may return a different value than they did previously. <warning>This function must **not** be called inside of &amp;lt;!--a physics hook, including --&amp;gt;<page>GM:ShouldCollide</page>. Instead, it must be called in advance when the condition is known to change.</warning> <warning>This function must **not** be called inside of &lt;!--a physics hook, including --&gt;<page>GM:ShouldCollide</page>. Instead, it must be called in advance when the condition is known to change.</warning> <warning>Failure to use this function correctly will result in a crash of the physics engine.</warning> </description> <realm>Shared</realm> </function>