7 files changed, 223 insertions, 0 deletions
diff --git a/src/Model/Board.elm b/src/Model/Board.elm
new file mode 100644
index 0000000..1361cfb
--- /dev/null
+++ b/src/Model/Board.elm
@@ -0,0 +1,17 @@
+module Model.Board
+  ( boardSize
+  , boardDiagonal
+  ) where
+
+import Model.Vec2 (Vec2)
+
+boardSize : Vec2
+boardSize =
+  { x = 500
+  , y = 500
+  }
+
+boardDiagonal : Float
+boardDiagonal =
+  boardSize.x ^ 2 + boardSize.y ^ 2
+    |> sqrt
diff --git a/src/Model/Cloud.elm b/src/Model/Cloud.elm
new file mode 100644
index 0000000..11f6311
--- /dev/null
+++ b/src/Model/Cloud.elm
@@ -0,0 +1,41 @@
+module Model.Cloud
+  ( Cloud
+  , initCloud
+  , playerPointsCollision
+  , playerPointCollision
+  ) where
+
+import List
+
+import Model.Point (..)
+import Model.Player (..)
+import Model.Config (..)
+
+import Utils.Geometry (distance)
+
+type alias Cloud =
+  { points : Config -> List Point
+  , spawn : Float
+  , lastSpawn : Float
+  }
+
+initCloud : Cloud
+initCloud =
+  let spawn = 600
+  in  { points config =
+          case config of
+            White -> []
+            Black -> []
+      , spawn = spawn
+      , lastSpawn = -spawn
+      }
+
+playerPointsCollision : Float -> Player -> List Point -> Bool
+playerPointsCollision time player points =
+  let collision = playerPointCollision time player
+  in  List.length (List.filter collision points) > 0
+
+playerPointCollision : Float -> Player -> Point -> Bool
+playerPointCollision time player point =
+  let pointPos = pointMove point time
+  in  (distance pointPos player.pos) < pointSize + playerSize
diff --git a/src/Model/Config.elm b/src/Model/Config.elm
new file mode 100644
index 0000000..2973dc7
--- /dev/null
+++ b/src/Model/Config.elm
@@ -0,0 +1,14 @@
+module Model.Config
+  ( Config(..)
+  , otherConfig
+  ) where
+
+type Config =
+  White
+  | Black
+
+otherConfig : Config -> Config
+otherConfig config =
+  case config of
+    White -> Black
+    Black -> White
diff --git a/src/Model/Game.elm b/src/Model/Game.elm
new file mode 100644
index 0000000..4ef5d89
--- /dev/null
+++ b/src/Model/Game.elm
@@ -0,0 +1,42 @@
+module Model.Game
+  ( Game
+  , initialGame
+  ) where
+
+import Random (..)
+import Keyboard (KeyCode)
+
+import Model.Player (..)
+import Model.Cloud (..)
+import Model.Vec2 (Vec2)
+import Model.Config (..)
+
+type alias Game =
+  { time : Float
+  , keysDown : List KeyCode
+  , score : Int
+  , player : Player
+  , cloud : Cloud
+  , bestScore : Int
+  , seed : Seed
+  }
+
+initialGame : Seed -> Vec2 -> Config -> Int -> Game
+initialGame seed playerPos config bestScore =
+  let initPlayer =
+    { pos = playerPos
+    , speed =
+        { x = 0
+        , y = 0
+        }
+    , config = config
+    }
+  in
+    { time = 0
+    , keysDown = []
+    , score = 0
+    , player = initPlayer
+    , cloud = initCloud
+    , bestScore = bestScore
+    , seed = seed
+    }
diff --git a/src/Model/Player.elm b/src/Model/Player.elm
new file mode 100644
index 0000000..c6aac21
--- /dev/null
+++ b/src/Model/Player.elm
@@ -0,0 +1,20 @@
+module Model.Player
+  ( Player
+  , playerSize
+  , playerSpeed
+  ) where
+
+import Model.Vec2 (..)
+import Model.Config (Config)
+
+type alias Player =
+  { pos : Vec2
+  , speed : Vec2
+  , config : Config
+  }
+
+playerSize : Float
+playerSize = 15
+
+playerSpeed : Float -> Float
+playerSpeed dt = dt / 200
diff --git a/src/Model/Point.elm b/src/Model/Point.elm
new file mode 100644
index 0000000..41967b6
--- /dev/null
+++ b/src/Model/Point.elm
@@ -0,0 +1,34 @@
+module Model.Point
+  ( Point
+  , pointMove
+  , pointSize
+  , pointSpeed
+  , pointSpawnDist
+  , pointAwayDist
+  ) where
+
+import Model.Vec2 (..)
+import Model.Board (boardDiagonal)
+
+type alias Point =
+  { initTime : Float
+  , initPos : Vec2
+  , initDest : Vec2
+  , move : Float -> Vec2 -> Vec2 -> Float -> Vec2
+  }
+
+pointMove : Point -> Float -> Vec2
+pointMove {initTime, initPos, initDest, move} time =
+  move initTime initPos initDest time
+
+pointSize : Float
+pointSize = 10
+
+pointSpeed : Float -> Float
+pointSpeed dt = dt / 20
+
+pointSpawnDist : Float
+pointSpawnDist = boardDiagonal * 3 / 5
+
+pointAwayDist : Float
+pointAwayDist = boardDiagonal * 3 / 4
diff --git a/src/Model/Vec2.elm b/src/Model/Vec2.elm
new file mode 100644
index 0000000..85ff008
--- /dev/null
+++ b/src/Model/Vec2.elm
@@ -0,0 +1,55 @@
+module Model.Vec2
+  ( Vec2
+  , add
+  , sub
+  , mul
+  , div
+  , norm
+  , clockwiseRotate90
+  , isNull
+  , originVec
+  ) where
+
+type alias Vec2 =
+  { x : Float
+  , y : Float
+  }
+
+add : Vec2 -> Vec2 -> Vec2
+add v1 v2 =
+  { x = v1.x + v2.x
+  , y = v1.y + v2.y
+  }
+
+sub : Vec2 -> Vec2 -> Vec2
+sub v1 v2 =
+  { x = v1.x - v2.x
+  , y = v1.y - v2.y
+  }
+
+mul : Float -> Vec2 -> Vec2
+mul m v =
+  { x = m * v.x
+  , y = m * v.y
+  }
+
+div : Vec2 -> Float -> Vec2
+div v d =
+  { x = v.x / d
+  , y = v.y / d
+  }
+
+norm : Vec2 -> Float
+norm v = sqrt(v.x ^ 2 + v.y ^ 2)
+
+clockwiseRotate90 : Vec2 -> Vec2
+clockwiseRotate90 v =
+  { x = -v.y
+  , y = v.x
+  }
+
+isNull : Vec2 -> Bool
+isNull v = (v.x == 0) && (v.y == 0)
+
+originVec : Vec2
+originVec = { x = 0, y = 0 }