module Model.Cloud
  ( Cloud
  , initCloud
  , playerPointsCollision
  , playerPointCollision
  ) where

import List

import Model.Point exposing (..)
import Model.Player exposing (..)
import Model.Config exposing (..)

import Utils.Geometry exposing (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 -> Float -> List Point -> Bool
playerPointsCollision elapsedTime player playerSize points =
  let collision = playerPointCollision elapsedTime player playerSize
  in  List.length (List.filter collision points) > 0

playerPointCollision : Float -> Player -> Float -> Point -> Bool
playerPointCollision elapsedTime player playerSize point =
  let pointPos = pointMove point elapsedTime
  in  (distance pointPos player.pos) < pointSize + playerSize