| Level Design / Level Routine Editing / Routine Action Editing / Precipitation Actions
| When the Precipitation Actions item is selected in the Level Routines Window's Actions to Perform column, the following set of controls appears in the panel on the right side of the Level Routines window. These controls are used to configure the precipitation related actions that are carried out when the selected routine is performed in the game. Up to three different types of precipitation may be set fall in a level at any given time. Precipitation is made up of numerous contrails, each of which moves in accordance with the properties configured with the controls described below. Depending on the appearance of the contrail type used, precipitation may take the form of rain, snow, or anything else.
Change Precipitation Type Checkbox | Determines whether a given precipitation type will be changed when the selected routine is performed.
Precipitation Type Pop-Up Menu | Determines which type of contrail will serve as precipitation when the selected routine is performed. The Edit button may be used to edit the game project's contrail types.
Horizontal Speed Field | Determines the horizontal speed of the precipitation when the selected routine is performed
Downward Speed Field | Determines the downward speed of the precipitation when the selected routine is performed
Scroll Speed Speed Field | Determines the speed at which the precipitation scrolls when the selected routine is performed; 1.0 is standard. Lower numbers make the precipitation scroll more slowly, causing it to appear further away. Higher numbers make the precipitation scroll more quickly, causing it to appear closer.
Density Slider | Determines the density to which the precipitation will be set when the selected routine is performed
| Each contrail comprising a given type of precipitation appears at the top of the screen and is removed from the game after sinking to the bottom of the screen. In order for particularly slow moving precipitation to retain an appropriate density as a level scrolls horizontally, the level's Contrail Spatial Tolerance should be set to a large value, such as 1000. For information on changing the Contrail Spatial Tolerance property, see the Level Parameter Editing section.