Just Another Spawner Mod FAQ

It adds an entity spawning system that runs in parallel with the vanilla system. By default it does nothing, but it lets you control mob spawn rates, locations, and conditions through a tag-based configuration system.

No. It assigns a LivingHandler to every entity type already in Minecraft, including those added by mods, and controls how those existing entities spawn.

Versions are listed for Minecraft 1.5.2, 1.6.2/1.6.4, 1.7.2, and 1.7.10.

No. Since it runs in parallel with the vanilla system, by default JAS will not do anything. It imports settings from declared entities but does not set any of them to spawn within the JAS spawner unless you configure it.

Each entity type gets a LivingHandler that controls its creature type, whether it uses the default mod location check, whether it should spawn at all, and whether it is forced to despawn. Each LivingHandler has multiple SpawnListEntries for biome-specific settings like biomes, spawn chance, spawn pack size, and chunk pack size.

Most settings are world specific and stored under the WorldSettings directory in the JAS forge config folder. A Master directory within it generates default values on every world load for the world-specific config.

It is described as a configurable replacement for the vanilla entity spawn system, but it actually runs in parallel with the vanilla system rather than replacing it outright.

No. The mod is an entity spawning system and does not add new items or blocks.

A LivingHandler is assigned to every entity type and controls what creature type it belongs to, whether it uses the default mod location check, whether it should spawn at all, and whether it is forced to despawn.

A SpawnListEntry is attached to a LivingHandler and controls biome-specific settings: which biomes to spawn in, the relative spawn chance, spawn pack size, and chunk pack size.