[ADD] In-game menu navigation using arrow keys.

Win32/Unuk/LibUnuk/LibUnuk.vcproj

@@ -285,10 +285,6 @@
 			RelativePath="..\..\..\src\libUnuk\MemManager.h"
 			>
 		</File>
-		<File
-			RelativePath="..\..\..\src\libUnuk\Node.h"
-			>
-		</File>
 		<File
 			RelativePath="..\..\..\src\libUnuk\NPC.cpp"
 			>

src/libUnuk/Button.cpp

@@ -1,7 +1,8 @@
 #include "Button.h"
 
 Button::Button(void) {
-
+  _highlighted = false;
+  _mouseOver = false;
 }
 
 Button::~Button(void) {
@@ -30,6 +31,16 @@ void Button::SetOverRGB(SDL_Color colour) {
   _mouseOverColour = colour;
 }
 
+void Button::SetHighlightRGB(Uint8 r, Uint8 g, Uint8 b) {
+  _highlightColour.r = r;
+  _highlightColour.g = g;
+  _highlightColour.b = b;
+}
+
+void Button::SetHighlightRGB(SDL_Color colour) {
+  _highlightColour = colour;
+}
+
 void Button::SetXY(int xArg, int yArg) {
   x = xArg;
   y = yArg;
@@ -62,14 +73,33 @@ void Button::SetText(string textArg) {
 bool Button::CheckMouseOver(void) {
   if(event.motion.x > _button.GetX() && event.motion.x < _button.GetX() + _button.GetWidth()) {
     if(event.motion.y > _button.GetY() && event.motion.y < _button.GetY() + _button.GetHeight()) {
+      if (!_highlighted) {
         _button.SetRGB(_mouseOverColour.r, _mouseOverColour.g, _mouseOverColour.b);
+      }
       return true;
     }
   }
+  if (!_highlighted) {
     _button.SetRGB(_mouseOutColour);
+  }
   return false;
 }
 
+void Button::SetHighlighted(bool highlighted) { 
+  if(_highlighted != highlighted) {
+    if(highlighted) {
+      _button.SetRGB(_highlightColour);
+    } else {
+      if(_mouseOver) {
+        _button.SetRGB(_mouseOverColour);
+      } else {
+        _button.SetRGB(_textColour);
+      }
+    }
+  }
+  _highlighted = highlighted;
+}
+
 void Button::Render(void) {
   _button.Draw();
   _text.Render();

src/libUnuk/Button.h

@@ -22,6 +22,11 @@ public:
   void SetTextRGB(SDL_Color);
   void SetText(string textArg);
 
+  void SetHighlightRGB(Uint8 r, Uint8 g, Uint8 b);
+  void SetHighlightRGB(SDL_Color);
+
+  void SetHighlighted(bool highlighted);
+
   void SetXY(int xArg, int yArg);
 
   int GetX(void)        const     { return x; }
@@ -29,6 +34,8 @@ public:
   int GetWidth(void)    const     { return w; }
   int GetHeight(void)   const     { return h; }
 
+  bool GetHighlighted(void) { return _highlighted; }
+
   bool CheckMouseOver(void);
 
   void Render(void);
@@ -40,6 +47,7 @@ private:
   SDL_Color _mouseOutColour;
   SDL_Color _mouseOverColour;
   SDL_Color _textColour;
+  SDL_Color _highlightColour;
 
   int x;
   int y;
@@ -48,6 +56,10 @@ private:
 
   Rect _button;
   Text _text;
+
+  bool _highlighted;
+
+  bool _mouseOver;
 };
 
 #endif

src/libUnuk/IngameMenu.cpp

@@ -2,35 +2,46 @@
 
 IngameMenu::IngameMenu(void) {
   _active = false;
+  _highlightedButton = 0;
 
   btnResume.SetOutRGB(200, 200, 200);
   btnResume.SetOverRGB(255, 255, 255);
   btnResume.SetTextRGB(0, 0, 0);
   btnResume.SetText("Resume Game");
+  btnResume.SetHighlightRGB(255, 128, 0);
+  btnResume.SetHighlighted(true);
   btnResume.SetXY(SCREEN_WIDTH / 2 - btnResume.GetWidth() / 2, 50);
 
   btnSaveGame.SetOutRGB(200, 200, 200);
   btnSaveGame.SetOverRGB(255, 255, 255);
   btnSaveGame.SetTextRGB(0, 0, 0);
   btnSaveGame.SetText("SaveGame");
+  btnSaveGame.SetHighlightRGB(255, 128, 0);
+  btnSaveGame.SetHighlighted(false);
   btnSaveGame.SetXY(SCREEN_WIDTH / 2 - btnSaveGame.GetWidth() / 2, 100);
 
   btnLoadGame.SetOutRGB(200, 200, 200);
   btnLoadGame.SetOverRGB(255, 255, 255);
   btnLoadGame.SetTextRGB(0, 0, 0);
   btnLoadGame.SetText("LoadGame");
+  btnLoadGame.SetHighlightRGB(255, 128, 0);
+  btnLoadGame.SetHighlighted(false);
   btnLoadGame.SetXY(SCREEN_WIDTH / 2 - btnLoadGame.GetWidth() / 2, 150);
 
   btnOptions.SetOutRGB(200, 200, 200);
   btnOptions.SetOverRGB(255, 255, 255);
   btnOptions.SetTextRGB(0, 0, 0);
   btnOptions.SetText("Options");
+  btnOptions.SetHighlightRGB(255, 128, 0);
+  btnOptions.SetHighlighted(false);
   btnOptions.SetXY(SCREEN_WIDTH / 2 - btnOptions.GetWidth() / 2, 200);
 
   btnExitToMenu.SetOutRGB(200, 200, 200);
   btnExitToMenu.SetOverRGB(255, 255, 255);
   btnExitToMenu.SetTextRGB(0, 0, 0);
   btnExitToMenu.SetText("Exit To Main Menu");
+  btnExitToMenu.SetHighlightRGB(255, 128, 0);
+  btnExitToMenu.SetHighlighted(false);
   btnExitToMenu.SetXY(SCREEN_WIDTH / 2 - btnExitToMenu.GetWidth() / 2, 250);
 }
 
@@ -47,8 +58,21 @@ ingameMenuNavVal_t IngameMenu::HandleInput(void) {
     btnExitToMenu.CheckMouseOver();
     
     if(event.key.type == SDL_KEYDOWN) {
-      if(event.key.keysym.sym == SDLK_ESCAPE)
+      if(event.key.keysym.sym == SDLK_ESCAPE) {
         return ingameMenuResume;
+      } else if(event.key.keysym.sym == SDLK_DOWN) {
+        HighlightNewSelection(_highlightedButton + 1);
+      } else if(event.key.keysym.sym == SDLK_UP) {
+        HighlightNewSelection(_highlightedButton - 1);
+      } else if(event.key.keysym.sym == SDLK_RETURN) {
+        switch(_highlightedButton) {
+          case 0: return ingameMenuResume;
+          case 1: return ingameMenuSaveGame;
+          case 2: return ingameMenuLoadGame;
+          case 3: return ingameMenuOptions;
+          case 4: return ingameMenuMainMenu;
+        }
+      }
     }
     else if(event.type == SDL_MOUSEBUTTONUP) {
       if(event.button.button == SDL_BUTTON_LEFT) {
@@ -75,3 +99,33 @@ void IngameMenu::Render(void) {
   btnOptions.RenderLiteral();
   btnExitToMenu.RenderLiteral();
 }
+
+void IngameMenu::HighlightNewSelection(int newButton) {
+  // Turn of highlight for currently highlighted button
+  switch(_highlightedButton) {
+    case 0: btnResume.SetHighlighted(false); break;
+    case 1: btnSaveGame.SetHighlighted(false); break;
+    case 2: btnLoadGame.SetHighlighted(false); break;
+    case 3: btnOptions.SetHighlighted(false); break;
+    case 4: btnExitToMenu.SetHighlighted(false); break;
+  }
+  
+  _highlightedButton = newButton;
+
+  // If < 0 then up was pressed when first index was selected
+  // If > 0 then down was pressed when last index was selected
+  if(_highlightedButton < 0) {
+    _highlightedButton = 4;
+  } else if(_highlightedButton > 4) {
+    _highlightedButton = 0;
+  }
+
+  // Highlight new selection
+  switch(_highlightedButton) {
+    case 0: btnResume.SetHighlighted(true);  break;
+    case 1: btnSaveGame.SetHighlighted(true); break;
+    case 2: btnLoadGame.SetHighlighted(true); break;
+    case 3: btnOptions.SetHighlighted(true); break;
+    case 4: btnExitToMenu.SetHighlighted(true); break;
+  }
+}

src/libUnuk/IngameMenu.h

@@ -27,6 +27,8 @@ public:
   bool GetStatus(void)      { return _active; }
 
 private:
+  void HighlightNewSelection(int newButton);
+
   bool _active;
 
   Button btnResume;
@@ -34,6 +36,8 @@ private:
   Button btnLoadGame;
   Button btnOptions;
   Button btnExitToMenu;
+
+  int _highlightedButton;
 };
 
 #endif