draw options screen when that is selected

fcore/game-type.sml

@@ -1,6 +1,9 @@
 signature GAME_TYPE =
 sig
-  datatype mode = LEVEL of LevelType.level_type | TITLE of TitleType.title_type
+  datatype mode =
+    LEVEL of LevelType.level_type
+  | TITLE of TitleType.title_type
+  | OPTIONS of OptionsType.options_type
 
   type game_type = {userKeys: CoreKey.user_key, mode: mode}
 
@@ -9,7 +12,10 @@ end
 
 structure GameType :> GAME_TYPE =
 struct
-  datatype mode = LEVEL of LevelType.level_type | TITLE of TitleType.title_type
+  datatype mode =
+    LEVEL of LevelType.level_type
+  | TITLE of TitleType.title_type
+  | OPTIONS of OptionsType.options_type
 
   type game_type = {userKeys: CoreKey.user_key, mode: mode}
 

fcore/game-update.sml

@@ -9,5 +9,6 @@ struct
       case mode of
         LEVEL level => LevelUpdate.update (level, input, userKeys)
       | TITLE title => TitleUpdate.update (title, input, userKeys)
+      | OPTIONS options => OptionsUpdate.update (options, input, userKeys)
     end
 end

fcore/options/options-type.sml

@@ -1,4 +1,33 @@
-structure OptionsType =
+signature OPTIONS_TYPE =
-struct
+sig
-  datatype focus = 
+  datatype focus =
+    LEFT_KEY
+  | RIGHT_KEY
+  | UP_KEY
+  | DOWN_KEY
+  | JUMP_KEY
+  | ATTACK_KEY
+  | SAVE_BUTTON
+  | CANCEL_BUTTON
+
+  type options_type = {focus: focus}
+
+  val initial: options_type
+end
+
+structure OptionsType :> OPTIONS_TYPE =
+struct
+  datatype focus =
+    LEFT_KEY
+  | RIGHT_KEY
+  | UP_KEY
+  | DOWN_KEY
+  | JUMP_KEY
+  | ATTACK_KEY
+  | SAVE_BUTTON
+  | CANCEL_BUTTON
+
+  type options_type = {focus: focus}
+
+  val initial = {focus = LEFT_KEY}
 end

fcore/options/options-update.sml

@@ -0,0 +1,5 @@
+structure OptionsUpdate =
+struct
+  fun update (options, input, userKeys) =
+    {mode = GameType.OPTIONS options, userKeys = userKeys}
+end

fcore/options/options-vec.sml

@@ -0,0 +1,250 @@
+structure OptionsVec =
+struct
+  open OptionsType
+
+  (* There's code duplication here because we want to avoid 
+   * branhing if/case expressions per draw-call because of 
+   * the branch prediction cost *)
+  fun drawLeftKey (options, width, height) =
+    let
+      val acc = MakeTextVec.make
+        (155, 35, width, height, "Left key", 0.3, 0.3, 0.7, [])
+
+      val acc = MakeTextVec.make
+        (155, 95, width, height, "Right key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 155, width, height, "Up key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 215, width, height, "Down key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 275, width, height, "Jump key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 335, width, height, "Attack key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 395, width, height, "Save changes", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 455, width, height, "Cancel changes", 0.0, 0.0, 0.0, acc)
+    in
+      Vector.concat acc
+    end
+
+  fun drawRightKey (options, width, height) =
+    let
+      val acc = MakeTextVec.make
+        (155, 35, width, height, "Left key", 0.0, 0.0, 0.0, [])
+
+      val acc = MakeTextVec.make
+        (155, 95, width, height, "Right key", 0.3, 0.3, 0.7, acc)
+
+      val acc = MakeTextVec.make
+        (155, 155, width, height, "Up key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 215, width, height, "Down key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 275, width, height, "Jump key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 335, width, height, "Attack key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 395, width, height, "Save changes", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 455, width, height, "Cancel changes", 0.0, 0.0, 0.0, acc)
+    in
+      Vector.concat acc
+    end
+
+  fun drawUpKey (options, width, height) =
+    let
+      val acc = MakeTextVec.make
+        (155, 35, width, height, "Left key", 0.0, 0.0, 0.0, [])
+
+      val acc = MakeTextVec.make
+        (155, 95, width, height, "Right key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 155, width, height, "Up key", 0.3, 0.3, 0.7, acc)
+
+      val acc = MakeTextVec.make
+        (155, 215, width, height, "Down key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 275, width, height, "Jump key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 335, width, height, "Attack key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 395, width, height, "Save changes", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 455, width, height, "Cancel changes", 0.0, 0.0, 0.0, acc)
+    in
+      Vector.concat acc
+    end
+
+  fun drawDownKey (options, width, height) =
+    let
+      val acc = MakeTextVec.make
+        (155, 35, width, height, "Left key", 0.0, 0.0, 0.0, [])
+
+      val acc = MakeTextVec.make
+        (155, 95, width, height, "Right key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 155, width, height, "Up key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 215, width, height, "Down key", 0.3, 0.3, 0.7, acc)
+
+      val acc = MakeTextVec.make
+        (155, 275, width, height, "Jump key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 335, width, height, "Attack key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 395, width, height, "Save changes", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 455, width, height, "Cancel changes", 0.0, 0.0, 0.0, acc)
+    in
+      Vector.concat acc
+    end
+
+  fun drawJumpKey (options, width, height) =
+    let
+      val acc = MakeTextVec.make
+        (155, 35, width, height, "Left key", 0.0, 0.0, 0.0, [])
+
+      val acc = MakeTextVec.make
+        (155, 95, width, height, "Right key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 155, width, height, "Up key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 215, width, height, "Down key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 275, width, height, "Jump key", 0.3, 0.3, 0.7, acc)
+
+      val acc = MakeTextVec.make
+        (155, 335, width, height, "Attack key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 395, width, height, "Save changes", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 455, width, height, "Cancel changes", 0.0, 0.0, 0.0, acc)
+    in
+      Vector.concat acc
+    end
+
+  fun drawAttackKey (options, width, height) =
+    let
+      val acc = MakeTextVec.make
+        (155, 35, width, height, "Left key", 0.0, 0.0, 0.0, [])
+
+      val acc = MakeTextVec.make
+        (155, 95, width, height, "Right key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 155, width, height, "Up key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 215, width, height, "Down key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 275, width, height, "Jump key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 335, width, height, "Attack key", 0.3, 0.3, 0.7, acc)
+
+      val acc = MakeTextVec.make
+        (155, 395, width, height, "Save changes", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 455, width, height, "Cancel changes", 0.0, 0.0, 0.0, acc)
+    in
+      Vector.concat acc
+    end
+
+  fun drawSaveKey (options, width, height) =
+    let
+      val acc = MakeTextVec.make
+        (155, 35, width, height, "Left key", 0.0, 0.0, 0.0, [])
+
+      val acc = MakeTextVec.make
+        (155, 95, width, height, "Right key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 155, width, height, "Up key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 215, width, height, "Down key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 275, width, height, "Jump key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 335, width, height, "Attack key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 395, width, height, "Save changes", 0.3, 0.3, 0.7, acc)
+
+      val acc = MakeTextVec.make
+        (155, 455, width, height, "Cancel changes", 0.0, 0.0, 0.0, acc)
+    in
+      Vector.concat acc
+    end
+
+  fun drawCancelKey (options, width, height) =
+    let
+      val acc = MakeTextVec.make
+        (155, 35, width, height, "Left key", 0.0, 0.0, 0.0, [])
+
+      val acc = MakeTextVec.make
+        (155, 95, width, height, "Right key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 155, width, height, "Up key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 215, width, height, "Down key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 275, width, height, "Jump key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 335, width, height, "Attack key", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 395, width, height, "Save changes", 0.0, 0.0, 0.0, acc)
+
+      val acc = MakeTextVec.make
+        (155, 455, width, height, "Cancel changes", 0.3, 0.3, 0.7, acc)
+    in
+      Vector.concat acc
+    end
+
+  fun getDrawVec (options: OptionsType.options_type, width, height) =
+    case #focus options of
+      LEFT_KEY => drawLeftKey (options, width, height)
+    | RIGHT_KEY => drawRightKey (options, width, height)
+    | UP_KEY => drawUpKey (options, width, height)
+    | DOWN_KEY => drawDownKey (options, width, height)
+    | JUMP_KEY => drawJumpKey (options, width, height)
+    | ATTACK_KEY => drawAttackKey (options, width, height)
+    | SAVE_BUTTON => drawSaveKey (options, width, height)
+    | CANCEL_BUTTON => drawCancelKey (options, width, height)
+end

fcore/title/title-update.sml

@@ -25,7 +25,7 @@ struct
           val mode =
             if #attackHeld input orelse #jumpHeld input then
               (* placeholder: go to configure screen instead once that is implemented *)
-              GameType.TITLE titleState
+              GameType.OPTIONS OptionsType.initial
             else
               let
                 val titleState =

oms.mlb

@@ -42,6 +42,7 @@ fcore/frame-input-type.sml
 fcore/level/player/player-type.sml
 fcore/level/level-type.sml
 fcore/title/title-type.sml
+fcore/options/options-type.sml
 fcore/game-type.sml
 
 fcore/level/player/player-patch.sml
@@ -60,6 +61,9 @@ fcore/level/level-update.sml
 fcore/title/title-update.sml
 fcore/title/title-vec.sml
 
+fcore/options/options-update.sml
+fcore/options/options-vec.sml
+
 fcore/game-update.sml
 
 (* shell *)

shell/gl-draw.sml

@@ -263,6 +263,19 @@ struct
       shellState
     end
 
+  fun helpDrawOptions shellState = drawPlayer shellState
+
+  fun drawOptions (shellState: t, options) =
+    let
+      val width = InputState.getWidth ()
+      val height = InputState.getHeight ()
+      val vec = OptionsVec.getDrawVec (options, width, height)
+      val shellState = uploadPlayer (shellState, vec)
+      val () = helpDrawOptions shellState
+    in
+      shellState
+    end
+
   fun drawMode (shellState: t, game: GameType.game_type) =
     let
       open GameType
@@ -270,6 +283,7 @@ struct
       case #mode game of
         LEVEL level => drawLevel (shellState, level)
       | TITLE title => drawTitle (shellState, title)
+      | OPTIONS options => drawOptions (shellState, options)
     end
 
   fun helpLoop (shellState as {window, ...}: t, game) =