Added rudimentary menu buttons, not yet connected to anything... it feels a bit hackish, to be honest, but I don't think we'll ever have too many to worry about, and if so, we can think about refactoring then

menubutton.h

@@ -0,0 +1,47 @@
+/* A clickable button widget
+ * 
+ */
+
+#ifndef _MENUBUTTON_H_
+#define _MENUBUTTON_H_
+
+#include <SDL.h>
+#include <SDL_ttf.h>
+#include <string>
+
+using std::string;
+
+// fixme: there's probably a better way to do this, but SDL's event model
+//        has me hard-pressed to figure out what it is.
+enum ButtonAction {BUTTON_BUILD, BUTTON_ATTACK, BUTTON_MOVE,
+		   BUTTON_BUILD_ATTACKER, BUTTON_BUILD_DEFENDER,
+		   BUTTON_BUILD_PRODUCER};
+
+class MenuButton
+{
+ public:
+    MenuButton(string text = "", TTF_Font* font = NULL, int x = 0, int y = 0,
+	       ButtonAction action = BUTTON_BUILD);
+
+    // Selectable buttons change colour for the duration they are selected,
+    // and should ignore clicks while selected
+    void set_hover(bool is_hovering);
+    void draw(SDL_Surface* display, int colour = 0x000000,
+	      int background_colour = 0x888888);
+
+    bool is_at(int test_x, int test_y);
+    ButtonAction get_action() const { return action; }
+
+ private:
+    string text;
+    int x;
+    int y;
+
+    bool hover;
+
+    TTF_Font* font;
+
+    ButtonAction action;
+};
+
+#endif