1 module Sim ( initSimSpace, testSim, physStep ) where
3 import Data.Vector ((!), (//))
4 import qualified Data.Vector as V
6 -- Simulation simSpace simW simH
7 data Simulation = Simulation
8 { simSpace :: V.Vector ChunkData
13 data ChunkType = Empty
15 | Wall deriving (Show)
17 data ChunkData = ChunkData
18 { chunkType :: ChunkType
22 simGet Simulation{simSpace=s,simW=w} x y = s ! (y*w+x)
23 simSet sim@Simulation{simSpace=s,simW=w,simH=h} c x y = sim { simSpace = (s // [(y*w+x,c)]) }
25 initSimSpace x y = Simulation
26 { simSpace = V.replicate (y*x) ChunkData { chunkType=Empty }
31 testSim = simSet (initSimSpace 10 10) (ChunkData Water) 5 0
33 physStep sim@Simulation{simW=w,simH=h} = _physStep [(x, y) | x <- [0..w-1], y <- [0..h-1]] (initSimSpace w h) sim
34 _physStep grid acc sim@Simulation{simSpace=s,simW=w,simH=h} =
36 else _physStep (tail grid) next sim
37 where x = fst $ head grid
41 -- takes in list of valid chunks, as well as the sim to modify
42 -- updateWaterChunk valid sim =
45 -- gets chunks around a given chunk that are inside grid
46 validDirects x y w h = filter
47 (\q -> 0 <= (fst q) && (fst q) < w && (snd q) <= 0 && (snd q) < h)
48 [(a,b) | a <- [x-1..x+1], b <- [y-1..y+1], not (a==x && b==y)]