Create Formicid species and monsters.

Tavern post:
https://crawl.develz.org/tavern/viewtopic.php?f=8&t=8298

Wierdness & mutations:
- poison weakness
- retractable antennae (can wear headgear and ignore mutation)
- chitin skin (+3 AC)
- most weapons 1-handed, big weapons 2-handed
- permanent stasis
- ability to shaft self
- ability to dig
- Starts with 2 curing pots

3 monster versions of formicids were added:
formicid, a weak fighter
formicid drone, a stronger fighter
formicid venom mage, a magician with olgreb's and mass cure poison

[ Pushing to a branch for experimental playtesting on CSZO.
  Also optimised the new tiles. -nfm ]

1 files changed, 18 insertions, 0 deletions

diff --git a/crawl-ref/source/tilepick-p.cc b/crawl-ref/source/tilepick-p.cc
index 80bab0a820..9cf3e7bad3 100644
--- a/crawl-ref/source/tilepick-p.cc
+++ b/crawl-ref/source/tilepick-p.cc
@@ -676,6 +676,8 @@ tileidx_t tilep_species_to_base_tile(int sp, int level)
         return TILEP_BASE_OCTOPODE;
     case SP_DJINNI:
         return TILEP_BASE_DJINNI;
+    case SP_FORMICID:
+        return TILEP_BASE_FORMICID;
     default:
         return TILEP_BASE_HUMAN;
     }
@@ -804,6 +806,22 @@ void tilep_race_default(int sp, int level, dolls_data *doll)
             hair = 0;
             beard = TILEP_BEARD_MEDIUM_GREEN;
             break;
+        case SP_FORMICID:
+            hair = 0;
+            // Three levels of antennae retraction
+            // and one with no antennae.
+            if (player_wearing_slot(EQ_HELMET))
+            {
+                result = TILEP_BASE_FORMICID;
+            }
+            else
+            {
+                result = TILEP_BASE_FORMICID
+                        + ((you.duration[DUR_ANTENNAE_EXTEND] 
+                            * player_mutation_level(MUT_ANTENNAE))
+                           / ANTENNAE_EXTEND_TIME);
+            }
+            break;
         default:
             // nothing to do
             break;