about summary refs log tree commit diff
path: root/src/Xanthous/Entities/Creature.hs
blob: cc07b3560c2caa98bbf81c8368b442479900fee6 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE TemplateHaskell #-}
--------------------------------------------------------------------------------
module Xanthous.Entities.Creature
  ( -- * Creature
    Creature(..)
    -- ** Lenses
  , creatureType
  , hitpoints
  , hippocampus

    -- ** Creature functions
  , newWithType
  , damage
  , isDead
  , visionRadius

    -- * Hippocampus
  , Hippocampus(..)
    -- ** Lenses
  , destination
    -- ** Destination
  , Destination(..)
  , destinationFromPos
    -- *** Lenses
  , destinationPosition
  , destinationProgress
  ) where
--------------------------------------------------------------------------------
import           Xanthous.Prelude
--------------------------------------------------------------------------------
import           Test.QuickCheck
import           Test.QuickCheck.Arbitrary.Generic
import           Data.Aeson.Generic.DerivingVia
import           Data.Aeson (ToJSON, FromJSON)
--------------------------------------------------------------------------------
import           Xanthous.AI.Gormlak
import           Xanthous.Entities.RawTypes hiding
                 (Creature, description, damage)
import qualified Xanthous.Entities.RawTypes as Raw
import           Xanthous.Game.State
import           Xanthous.Data
import           Xanthous.Entities.Creature.Hippocampus
--------------------------------------------------------------------------------

data Creature = Creature
  { _creatureType :: !CreatureType
  , _hitpoints    :: !Hitpoints
  , _hippocampus  :: !Hippocampus
  }
  deriving stock (Eq, Show, Ord, Generic)
  deriving anyclass (NFData, CoArbitrary, Function)
  deriving Draw via DrawRawCharPriority "_creatureType" 1000 Creature
  deriving (ToJSON, FromJSON)
       via WithOptions '[ FieldLabelModifier '[Drop 1] ]
                       Creature
instance Arbitrary Creature where arbitrary = genericArbitrary
makeLenses ''Creature

instance HasVisionRadius Creature where
  visionRadius = const 50 -- TODO

instance Brain Creature where
  step = brainVia GormlakBrain
  entityCanMove = const True

instance Entity Creature where
  blocksVision _ = False
  blocksObject _ = True
  description = view $ creatureType . Raw.description
  entityChar = view $ creatureType . char
  entityCollision = const $ Just Combat

--------------------------------------------------------------------------------

newWithType :: CreatureType -> Creature
newWithType _creatureType =
  let _hitpoints = _creatureType ^. maxHitpoints
      _hippocampus = initialHippocampus
  in Creature {..}

damage :: Hitpoints -> Creature -> Creature
damage amount = hitpoints %~ \hp ->
  if hp <= amount
  then 0
  else hp - amount

isDead :: Creature -> Bool
isDead = views hitpoints (== 0)

{-# ANN module ("Hlint: ignore Use newtype instead of data" :: String) #-}