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authorGriffin Smith <root@gws.fyi>2019-12-30T16·31-0500
committerGriffin Smith <root@gws.fyi>2019-12-30T16·31-0500
commite76567b9e776070812838828d8de8220c2a461e7 (patch)
tree40a801de9684b39a3258f4f33f121b14dd407a64 /src/Xanthous/Util/Optparse.hs
parent6f427fe4d6ba9a03f122d15839298040a7cfb925 (diff)
Add dungeon level generation
Add a dungeon level generator, which:

1. generates an infinite sequence of rectangular rooms within the
   dimensions of the level
2. removes any duplicates from that sequence
3. Generates a graph from the delaunay triangulation of the centerpoints
   of those rooms
4. Generates the minimum-spanning-tree of that delaunay triangulation,
   with weights given by line length in points
5. Adds back a subset (default 10-15%) of edges from the delaunay
   triangulation to the graph
6. Uses the resulting graph to draw corridors between the rooms, using a
   random point on the near edge of each room to pick the points of the
   corridors
Diffstat (limited to 'src/Xanthous/Util/Optparse.hs')
-rw-r--r--src/Xanthous/Util/Optparse.hs21
1 files changed, 21 insertions, 0 deletions
diff --git a/src/Xanthous/Util/Optparse.hs b/src/Xanthous/Util/Optparse.hs
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+++ b/src/Xanthous/Util/Optparse.hs
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+--------------------------------------------------------------------------------
+module Xanthous.Util.Optparse
+  ( readWithGuard
+  ) where
+--------------------------------------------------------------------------------
+import Xanthous.Prelude
+--------------------------------------------------------------------------------
+import qualified Options.Applicative as Opt
+--------------------------------------------------------------------------------
+
+readWithGuard
+  :: Read b
+  => (b -> Bool)
+  -> (b -> String)
+  -> Opt.ReadM b
+readWithGuard predicate errmsg = do
+  res <- Opt.auto
+  unless (predicate res)
+    $ Opt.readerError
+    $ errmsg res
+  pure res