Prop dynamic

Template:Base point It is used to add an arbitrary model to the world that can animate itself and move between positions.

A prop_dynamic cannot move around on its own however: it must be parented to an entity that can. For instance, to create a functional Razortrain you would parent the various engines and carriages, as prop_dynamic, to an invisible func_tracktrain brush entity.

Dynamic props receive "point lighting": one value, re-sampled every frame, is applied to the entire model. point_spotlights (per-vertex) and env_projectedtextures (per-pixel) can overcome this.

Tip:If your model is never going to move and/or requires detailed lighting, consider using prop_static (which is cheaper).

Note:To enforce consistency, models with embedded physics data cannot by default be used by prop_dynamic. Use the Hammer model browser's Info tab to check for support.

Uses

• Buttons can be created by enveloping a prop_dynamic inside an invisible func_button brush, then using the SetAnimation input to play a switching animation.
• Similarly, levers can be created by enveloping a prop_dynamic inside a func_rot_button (or momentary_rot_button) brush. No animation needed this time - the brush will rotate the prop by itself.
• A prop_dynamic can be configured to break apart after receiving damage.
  Bug:Health set inside the model will override health set in Hammer!  [todo tested in ?]

See also

• Prop Types Overview
  • prop_static
  • prop_physics
  • prop_detail