module EnemyState where

import Enemy (..)
import Player (..)
import Geometry (distance)

type EnemyState =
  { enemies : [Enemy]
  , spawn : Float
  , lastSpawn : Float
  }

initEnemyState : EnemyState
initEnemyState =
  let spawn = 200
  in  { enemies = []
      , spawn = spawn
      , lastSpawn = -spawn
      }

playerEnemyCollision : Float -> Player -> Enemy -> Bool
playerEnemyCollision time player enemy =
  let enemyPos = enemyMove enemy time
  in  (distance enemyPos player.pos) < enemySize + playerSize

playerEnemiesCollision : Float -> Player -> [Enemy] -> Bool
playerEnemiesCollision time player enemies =
  let collision = playerEnemyCollision time player
  in  length (filter collision enemies) > 0