New monster spell: Awaken Vines

This spell summons 1-3 snaplasher vines at spots adjacent to trees
within the LoS of both the caster and their target.

A single caster can animate no more than 3 vines in total at once.
No vine can be placed such that connectivity is blocked, nor within
several squares of any existing vine. Moreover, no one will cast the
spell if several vines are already in LoS, even if those vines do not
belong to them. Additionally, the vines will die on their own when
the caster leaves LoS of them (or dies).

Ideally, this means that the vines will attack the player from multiple
angles at once, without ever completely blocking off routes or flooding
the screen when multiple casters are present.

1 files changed, 2 insertions, 1 deletions

diff --git a/crawl-ref/source/mgen_data.h b/crawl-ref/source/mgen_data.h
index 81144dbcf5..e98bb67e84 100644
--- a/crawl-ref/source/mgen_data.h
+++ b/crawl-ref/source/mgen_data.h
@@ -148,7 +148,8 @@ struct mgen_data
                || mt == MONS_BATTLESPHERE
                || summon_type == SPELL_STICKS_TO_SNAKES
                || summon_type == SPELL_DEATH_CHANNEL
-               || summon_type == SPELL_SIMULACRUM);
+               || summon_type == SPELL_SIMULACRUM
+               || summon_type == SPELL_AWAKEN_VINES);
     }
 
     bool permit_bands() const { return (flags & MG_PERMIT_BANDS); }