Effect constants

Partical effects are defined using the functions effect_create_below and effect_create_above. There are a number of different kinds of effects, indicated with the following constants:


 * ef_explosion 
 * ef_ring 
 * ef_ellipse 
 * ef_firework 
 * ef_smoke 
 * ef_smokeup 
 * ef_star 
 * ef_spark 
 * ef_flare 
 * ef_cloud 
 * ef_rain 
 * ef_snow 

Some you want to create just once (like the explosion) and some you want to create in every step (like the smoke or the rain). Note that rain and snow are always created at the top of the room so the position is irrelevant in this case.