MeshSketch: skybox toggle.

1 files changed, 30 insertions, 8 deletions

diff --git a/MeshSketch.hs b/MeshSketch.hs
index e23820c..0040359 100644
--- a/MeshSketch.hs
+++ b/MeshSketch.hs
@@ -1,5 +1,6 @@
 {-# LANGUAGE LambdaCase       #-}
 {-# LANGUAGE OverloadedLabels #-}
+{-# LANGUAGE PatternSynonyms  #-}
 module MeshSketch where
 
 import Control.Monad
@@ -11,6 +12,8 @@ import GI.GObject.Functions
 import GI.Gtk
 import Numeric.LinearAlgebra
 
+import CubeMap
+
 data MeshMaker = MeshMaker
     { mmWidget   :: GLArea
     , mmRealized :: IORef (Maybe State)
@@ -28,7 +31,9 @@ data Camera = Camera
     }
 
 data State = State
-    { stCamera :: IORef Camera
+    { stCamera   :: IORef Camera
+    , stSkyboxes :: Skyboxes
+    , stSkybox   :: IORef Int
     }
 
 initCamera = Camera
@@ -59,18 +64,26 @@ onRealize mm@(MeshMaker w ref) = do
     readIORef ref >>= \case
         Just st -> onUnrealize mm -- Shouldn't happen.
         Nothing -> return ()
+    set w [ #canFocus := True ] -- For keyboard events.
     widgetAddEvents w
         [ EventMaskPointerMotionMask
         , EventMaskButtonPressMask
         , EventMaskButtonReleaseMask
         , EventMaskTouchMask
         , EventMaskScrollMask
+        , EventMaskKeyPressMask -- , EventMaskKeyReleaseMask
         ]
-    _ <- on w #event $ onEvent mm
     cam <- newIORef initCamera
-    writeIORef ref $ Just State
-        { stCamera = cam
-        }
+    skyboxes <- loadSkyboxes
+    skybox <- newIORef 0
+    let st = State
+            { stCamera   = cam
+            , stSkyboxes = skyboxes
+            , stSkybox   = skybox
+            }
+
+    _ <- on w #event $ onEvent w st
+    writeIORef ref $ Just st
 
 onUnrealize :: MeshMaker -> IO ()
 onUnrealize (MeshMaker w ref) = do
@@ -86,8 +99,7 @@ onRender :: MeshMaker -> GLContext -> IO Bool
 onRender (MeshMaker w ref) gl = do
     return True
 
-
-onEvent mm@(MeshMaker w ref) ev = do
+onEvent w st ev = do
     msrc <- eventGetSourceDevice ev
     inputSource <- forM msrc $ \src -> do
         src <- get src #inputSource
@@ -110,6 +122,16 @@ onEvent mm@(MeshMaker w ref) ev = do
             put d
             return ()
 
-        _ -> return ()
+        EventTypeKeyPress -> do
+            kev <- get ev #key
+            val <- get kev #keyval
+            when (val `elem` [KEY_N,KEY_n]) $ do
+                modifyIORef' (stSkybox st) $ \n -> (n + 1) `mod` (skyboxCount $ stSkyboxes st)
+                idx <- readIORef (stSkybox st)
+                put (skyboxNames (stSkyboxes st) !! idx)
+                return ()
+            return ()
+
+        e -> return ()
 
     return False