Initial commit

Haskell version now has most of the functionality from the C++ version, except for color, and
overworld generation is REALLY slow.

1 files changed, 67 insertions, 0 deletions

@@ -0,0 +1,67 @@
+module Fallen.Map
+( Map,
+  emptyMap,
+  dimension,
+  inBounds,
+  getTileAtPos,
+  findTileInMap,
+  updateMap,
+  legalMoves,
+  fillMapRect
+) where
+  import Fallen.Tiles
+  import Fallen.Point
+  import Data.List
+  import Fallen.Util
+  import Data.Maybe
+  
+  data Map = Map {
+    dimension :: (Int, Int),
+    mapdata :: [(Point, Tile)],
+    background :: Tile
+    }
+  
+  -- emptyMap :: Int -> Int -> Tile -> Map
+  emptyMap w h t = Map { dimension=(w,h), mapdata=[], background=t }
+  
+  -- inBounds :: Map -> Point -> Bool
+  inBounds m (x,y) = let (w,h) = dimension m in (x >= 0) && (x < w) && (y >= 0) && (y < h)
+  
+  -- getTileAtPos :: Map -> Point -> Tile
+  --getTileAtPos m p = if (inBounds m p)
+  --  then mapdata m p
+  --  else background m
+  getTileAtPos m p = fromMaybe (background m) $ lookup p $ mapdata m
+  
+  -- findTileInMap :: Map -> Tile -> [Point]
+--  findTileInMap m t = filter (\p -> t == mapdata m p) rawPoints where
+--    (w,h) = dimension m
+--    rawPoints = [(x,y) | x <- [0..w-1], y <- [0..h-1]]
+  findTileInMap m t = map fst $ filter ((== t) . snd) $ mapdata m
+  
+  -- updateMap updates the tiles at the given position in the map
+  -- if the passed point already exists in the internal array, it is overwritten with the new point
+  -- if the passed tile is the background tile, it removes the tile pair from the internal array
+  -- updateMap :: Point -> Tile -> Map -> Map
+  updateMap p t (Map d xs bg) = if t == bg
+    then Map d (filter ((/= p) . fst) xs) bg
+    else case lookup p xs of
+      Just _ -> Map d (map (\(p1,t1) -> if p1 == p then (p,t) else (p1,t1)) xs) bg
+      Nothing -> Map d ((p,t):xs) bg
+--  updateMap p t (Map d xs bg) = Map d (redirect p t xs) bg where
+--    redirect p t xs = (\p2 -> if p == p2 then t else xs p2)
+  
+  -- legalMoves :: Map -> Point -> [Tile] -> [Direction]
+  legalMoves m p ts = map fst $ filter legal $ map tileDir directions where
+    tileDir d = (d, getTileAtPos m $ stepInDirection p d)
+    legal (_,t) = t `elem` ts
+   
+  -- fillMapRect :: Int -> Int -> Int -> Int -> Tile -> Map -> Map
+  fillMapRect x y w h t (Map d xs bg) = if bg == t
+          then Map d (filter outBounds xs) bg 
+          else Map d (filter outBounds xs ++ [((px,py), t) | px <- [x..x+w-1], py <- [y..y+h-1]]) bg where
+                  outBounds ((px,py),_) = (px < x) || (px >= (x+w)) || (py < y) || (py >= (y+h))
+--  fillMapRect x y w h t (Map d xs bg) = Map d redirectInBounds bg where
+--    redirectInBounds = (\p -> if (inBounds p) then t else xs p)
+--    inBounds (px,py) = (px >= x) && (px < (x+w)) && (py >= y) && (py < (y+h))
+  
\ No newline at end of file