Survival

procedure
(custom-sky [ #:night-sky-color color
#:length-of-day day-length
#:start-of-daytime day-start
#:end-of-daytime day-end
#:max-darkness max-darkness]) → sky?
  color : (or/c string? symbol?) = 'black
  day-length : number? = 2400
  day-start : number? = #f
  day-end : number? = #f
  max-darkness : number? = 160

Creates a custom sky that can be used in the #:sky parameter of survival-game.

procedure
(custom-avatar [ #:sprite sprite
#:damage-processor damage-processor
#:position position
#:speed speed
#:key-mode key-mode
#:mouse-aim? mouse-aim
#:health health
#:max-health max-health
#:components first-component]
rest ...) → entity?
   sprite : (or/c sprite? (listof sprite?) string? (listof string?))
= (random-character-sprite)
   damage-processor : damage-processor?
=
(filter-damage-by-tag #:filter-out '(friendly-team passive)
                      #:show-damage? #t
                      #:hit-sound HIT-SOUND)
  position : posn? = (posn 100 100)
  speed : number? = 10
  key-mode : (or/c 'wasd 'arrow-keys) = 'arrow-keys
  mouse-aim : boolean? = #f
  health : number? = 100
  max-health : number? = 100
   first-component : (or/c component-or-system? #f (listof #f))
= #f
  rest : (listof (or/c component-or-system? #f (listof #f)))

Returns a custom avatar, which will be placed in to the world automatically if it is passed into survival-game via the #:avatar parameter.

procedure
(custom-weapon [ #:name name
#:sprite sprite
#:dart-sprite dart-sprite
#:speed speed
#:damage damage
#:range range
#:dart dart
#:fire-mode fire-mode
#:fire-rate fire-rate
#:fire-key fire-key
#:fire-sound fire-sound
#:mouse-fire-button button
#:point-to-mouse? ptm?
#:rapid-fire? rf?
#:rarity rarity]) → entity?
  name : string? = "Repeater"
   sprite : (or/c sprite? (listof sprite?) string? (listof string?))
= chest-sprite
   dart-sprite : (or/c sprite? (listof sprite?) string? (listof string?))
= (rectangle 10 2 "solid" "green")
  speed : number? = 10
  damage : number? = 10
  range : number? = 1000
   dart : entity? =
(custom-dart #:sprite ds
             #:speed spd
             #:damage dmg
             #:range rng)
  fire-mode : fire-mode? = 'normal
  fire-rate : number? = 3
  fire-key : symbol? = 'f
  fire-sound : (or/c rsound? procedure? '() #f) = LASER-SOUND
  button : (or/c 'left 'right false?) = #f
  ptm? : boolean? = #f
  rf? : boolean? = #t
  rarity : rarity-level? = 'common

Returns a custom weapon, which will be placed in to the world automatically if it is passed into survival-game via the #:weapon-list parameter.

procedure
(custom-enemy [ #:amount-in-world amount-in-world
#:sprite sprite
#:ai ai
#:health health
#:weapon weapon
#:death-particles death-particles
#:night-only? night-only?
#:components first-component]
more-components ...) → entity?
  amount-in-world : positive? = 1
   sprite : (or/c sprite? (listof sprite?) string? (listof string?))
= (first (shuffle (list slime-sprite bat-sprite snake-sprite)))
  ai : ai-level? = 'medium
  health : positive? = 100
   weapon : entity? =
(custom-weapon #:name "Spitter"
               #:dart (acid-dart))
  death-particles : entity? = (custom-particles)
  night-only? : boolean? = #f
   first-component : (or/c component-or-system? #f (listof #f))
= #f
  more-components : (listof (or/c component-or-system? #f (listof #f)))

Returns a custom enemy, which will be placed in to the world automatically if it is passed into survival-game via the #:enemy-list parameter.

procedure
(survival-game [ #:headless headless
#:bg bg
#:avatar avatar
#:starvation-rate starvation-rate
#:sky sky
#:npc-list npc-list
#:enemy-list enemy-list
#:coin-list coin-list
#:food-list food-list
#:crafter-list crafter-list
#:score-prefix prefix
#:enable-world-objects? world-objects?
#:weapon-list weapon-list
#:instructions instructions
#:other-entities other-entities]
rest ...) → game?
  headless : boolean? = #f
  bg : entity? = (plain-forest-bg)
   avatar : (or/c entity? #f)
= (custom-avatar #:sprite (circle 10 'solid 'red))
  starvation-rate : (or/c number? #f) = 50
  sky : (or/c sky? #f) = (custom-sky)
  npc-list : (listof (or/c entity? procedure?)) = '()
  enemy-list : (listof (or/c entity? procedure?)) = '()
  coin-list : (listof (or/c entity? procedure?)) = '()
  food-list : (listof (or/c entity? procedure?)) = '()
  crafter-list : (listof (or/c entity? procedure?)) = '()
  prefix : string? = "Gold"
  world-objects? : boolean? = #f
  weapon-list : (listof (or/c entity? procedure?)) = '()
  instructions : (or/c #f entity?) = #f
   other-entities : (or/c #f entity? (listof #f) (listof entity?))
= #f
  rest : (listof (or/c #f entity? (listof #f) (listof entity?)))

The top-level function for the survival-game language. Can be run with no parameters to get a basic, default game.

procedure
(custom-crafter [ #:position position
#:tile tile
#:name name
#:sprite sprite
#:open-key open-key
#:open-sound open-sound
#:select-sound select-sound
#:recipe-list recipe-list
#:components first-component]
more-components ...) → entity?
  position : posn? = (posn 100 100)
  tile : number? = 0
  name : string? = "Crafter"
   sprite : (or/c sprite? (listof sprite?) string? (listof string?))
= cauldron-sprite
  open-key : (or/c string? symbol?) = 'space
   open-sound : (or/c rsound? procedure? '() #f)
= OPEN-DIALOG-SOUND
  select-sound : (or/c rsound? procedure? '() #f) = BLIP-SOUND
   recipe-list : (listof recipe?)
=
(list (recipe #:product (carrot-stew)
              #:build-time 30))
   first-component : (or/c component-or-system? #f (listof #f))
= #f
  more-components : (listof (or/c component-or-system? #f (listof #f)))

Returns a custom crafter, which will be placed in to the world automatically if it is passed into survival-game via the #:crafter-list parameter.

procedure
(custom-npc [ #:sprite sprite
#:position position
#:name name
#:tile tile
#:dialog dialog
#:mode mode
#:game-width game-width
#:speed speed
#:target target
#:sound sound
#:scale scale
#:components first-component]
more-components ...) → entity?
   sprite : (or/c sprite? (listof sprite?) string? (listof string?))
= (random-character-sprite)
  position : posn? = (posn 200 200)
   name : string?
=
(first (shuffle (list "Adrian" "Alex" "Riley"
                      "Sydney" "Charlie" "Andy")))
  tile : number? = 0
  dialog : dialog-str? = #f
  mode : (or/c 'still 'wander 'pace 'follow) = 'wander
  game-width : number? = 480
  speed : number? = 2
  target : string? = "player"
  sound : boolean? = #t
  scale : number? = 1
   first-component : (or/c component-or-system? #f (listof #f) observe-change?)
= #f
  more-components : (listof (or/c component-or-system? #f (listof #f) observe-change?))

Returns a custom npc, which will be placed in to the world automatically if it is passed into survival-game via the #:npc-list parameter.

procedure
(custom-bg [ #:image bg-img
#:rows rows
#:columns columns
#:start-tile start-tile
#:hd? high-def?
#:components first-component]
more-components ...) → entity?
  bg-img : image? = FOREST-BG
  rows : number? = 3
  columns : number? = 3
  start-tile : number? = 0
  high-def? : boolean? = #f
   first-component : (or/c component-or-system? #f (listof #f))
= #f
  more-components : (listof (or/c component-or-system? #f (listof #f)))

Returns a custom background, which will be used automatically if it is passed into survival-game via the #:bg parameter.

procedure
(custom-food [ #:name name
#:sprite sprite
#:tile tile
#:position position
#:amount-in-world amount-in-world
#:storable? storable?
#:consumable? consumable?
#:value value
#:heals-by heals-by
#:respawn? respawn?
#:on-pickup pickup-func
#:on-store store-func
#:on-drop drop-func
#:components first-component]
more-components ...) → entity?
  name : string? = "Carrot"
  sprite : (or/c sprite? (listof sprite?)) = carrot-sprite
  tile : number? = 0
  position : posn? = (posn 0 0)
  amount-in-world : number? = 1
  storable? : boolean? = #t
  consumable? : boolean? = #t
  value : (or/c number? #f) = #f
  heals-by : (or/c number? #f) = 10
  respawn? : boolean? = #t
  pickup-func : procedure? = (λ (g e) e)
  store-func : procedure? = (λ (g e) e)
  drop-func : procedure? = (λ (g e) e)
  first-component : component-or-system? = #f
  more-components : (listof component-or-system?)

Returns a custom food, which will be placed into the world automatically if it is passed into adventure-game via the #:food-list parameter.

procedure
(custom-product [ #:name name
#:sprite sprite
#:tile tile
#:position position
#:amount-in-world amount-in-world
#:storable? storable?
#:consumable? consumable?
#:value value
#:heals-by heals-by
#:respawn? respawn?
#:on-pickup pickup-func
#:on-store store-func
#:on-drop drop-func
#:components first-component]
more-components ...) → entity?
  name : string? = "Carrot Stew"
  sprite : (or/c sprite? (listof sprite?)) = carrotstew-sprite
  tile : number? = 0
  position : posn? = (posn 0 0)
  amount-in-world : number? = 1
  storable? : boolean? = #t
  consumable? : boolean? = #t
  value : (or/c number? #f) = #f
  heals-by : (or/c number? #f) = 10
  respawn? : boolean? = #f
  pickup-func : procedure? = (λ (g e) e)
  store-func : procedure? = (λ (g e) e)
  drop-func : procedure? = (λ (g e) e)
  first-component : component-or-system? = #f
  more-components : (listof component-or-system?)

Returns a custom product, which can be used to create a recipe product if it is passed into recipe via the #:product parameter.

procedure
(custom-coin [ #:entity entity
#:sprite sprite
#:position position
#:name name
#:tile tile
#:amount-in-world amount-in-world
#:value value
#:respawn? respawn
#:components first-component]
more-components ...) → entity?
  entity : entity? = (copper-coin)
   sprite : (or/c sprite? (listof sprite?) string? (listof string?) #f)
= #f
  position : (or/c posn? #f) = #f
  name : (or/c string? #f) = #f
  tile : (or/c number? #f) = #f
  amount-in-world : number? = 10
  value : number? = 10
  respawn : boolean? = #t
   first-component : (or/c component-or-system? #f (listof #f))
= #f
  more-components : (listof (or/c component-or-system? #f (listof #f)))

Returns a custom coin, which will be placed into the world automatically if it is passed into survival-game via the #:coin-list parameter.

procedure
(custom-item [ #:name name
#:sprite sprite
#:tile tile
#:position position
#:amount-in-world amount-in-world
#:storable? storable?
#:consumable? consumable?
#:value value
#:heals-by heals-by
#:respawn? respawn?
#:on-pickup pickup-func
#:on-store store-func
#:on-drop drop-func
#:components first-component]
more-components ...) → entity?
  name : string? = "Chest"
  sprite : (or/c sprite? (listof sprite?)) = chest-sprite
  tile : number? = #f
  position : posn? = #f
  amount-in-world : number? = 1
  storable? : boolean? = #t
  consumable? : boolean? = #f
  value : (or/c number? #f) = 10
  heals-by : (or/c number? #f) = #f
  respawn? : boolean? = #t
  pickup-func : procedure? = (λ (g e) e)
  store-func : procedure? = (λ (g e) e)
  drop-func : procedure? = (λ (g e) e)
  first-component : component-or-system? = #f
  more-components : (listof component-or-system?)

Returns a custom item, which has a unique item id and can be used in npc quests.