wizard-wipeout/src-server/Server/Map.hs
2023-12-07 12:51:35 +01:00

73 lines
2.6 KiB
Haskell

module Server.Map where
import qualified Data.Matrix as M
import System.Random
import Library.Types
import Server.Map.Snippets
-- | This function procedurally generates the Arena for the game
generateArena
:: Int -- ^ Map's width
-> Int -- ^ Map's height
-> Float -- ^ Probability for a tile to be an item spawner
-> IO Arena -- ^ resulting Arena
generateArena arenaWidth arenaHeight spawnerChance = do
undefined
-- | Generate basic Map of Air and Walls
generateMap
:: Int -- ^ Map's width
-> Int -- ^ Map's height
-> IO Map -- ^ resulting Map
generateMap mapWidth mapHeight = do
let initMap = M.matrix mapHeight mapWidth (const Air)
divide 0 0 mapHeight mapWidth initMap
where
divide :: Int -> Int -> Int -> Int -> Map -> IO Map
divide rowOffset colOffset rowSize colSize tilemap
| rowSize <= 3 || colSize <= 3 = pure tilemap
| otherwise = do
-- position wall intersection at random
crossRow <- randomRIO (2, rowSize - 1)
crossCol <- randomRIO (2, colSize - 1)
-- position wall passages at random wall tiles
rowHole1 <- randomRIO (1, crossRow - 1)
rowHole2 <- randomRIO (crossRow + 1, rowSize - 1)
colHole1 <- randomRIO (1, crossCol - 1)
colHole2 <- randomRIO (crossCol + 1, colSize - 1)
-- determine all possible passages
let allHoles =
[ (rowHole1, crossCol)
, (rowHole2, crossCol)
, (crossRow, colHole1)
, (crossRow, colHole2)
]
-- drop one of the passages randomly
randomDropIndex <- randomRIO (0, length allHoles - 1)
let randomDrop = allHoles !! randomDropIndex
holes = filter (/= randomDrop) allHoles
crossedMap = M.mapPos
(\(r, c) tile ->
if (r - rowOffset == crossRow && c - colOffset > 0 && c - colOffset <= colSize) ||
(c - colOffset == crossCol && r - rowOffset > 0 && r - rowOffset <= rowSize)
then if (r - rowOffset, c - colOffset) `elem` holes
then Air
else Wall
else tile
)
tilemap
divide rowOffset colOffset (crossRow - 1) (crossCol - 1) =<<
divide rowOffset (colOffset + crossCol + 1) (crossRow - 1) (colSize - crossCol - 1) =<<
divide (rowOffset + crossRow + 1) colOffset (rowSize - crossRow - 1) (crossCol - 1) =<<
divide
(rowOffset + crossRow + 1)
(colOffset + crossCol + 1)
(rowSize - crossRow - 1)
(colSize - crossCol - 1)
crossedMap