1 files changed, 70 insertions, 0 deletions
diff --git a/src/sliceitoff/menu/menu.py b/src/sliceitoff/menu/menu.py
new file mode 100644
index 0000000..c0d63af
--- /dev/null
+++ b/src/sliceitoff/menu/menu.py
@@ -0,0 +1,70 @@
+""" menu.menu - Skeleton for menus """
+import pygame
+
+from sliceitoff.display import Scaling
+
+from .explodeout import ExplodeOutGroup
+
+MOUSE_TRESHOLD = 100
+
+class Menu(ExplodeOutGroup):
+    """ sprite group with imputs to make selection """
+    def __init__(self, screen, items):
+        super().__init__()
+        self.items = items
+        self.selection = 0
+        self.mousey = 0
+        self.screen = screen
+        self.add(self.screen(self.selection))
+
+    def do_selection(self):
+        """ Default selection handler. Every action just ends menu. """
+        self.do_fadeout()
+
+    def update(self, dt = 0, **kwargs):
+        """ Does it all. Reads keyboard and updates screen """
+        if not super().update(dt = dt, **kwargs) or self.explode:
+            return
+
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                self.selection = self.items - 1
+                self.do_selection()
+                break
+            if event.type == pygame.MOUSEBUTTONDOWN and event.button <= 3:
+                self.do_selection()
+                break
+            if event.type == pygame.KEYDOWN:
+                if self.process_key(event.key):
+                    break
+            elif event.type == pygame.MOUSEMOTION:
+                self.process_mouse_motion()
+        self.empty()
+        self.add(self.screen(self.selection))
+
+    def process_mouse_motion(self):
+        """ Mouse movement up or down moves menu selection """
+        self.mousey += pygame.mouse.get_rel()[1]
+        pygame.mouse.set_pos(Scaling.center)
+        if abs(self.mousey) > MOUSE_TRESHOLD:
+            self.selection += 1 if self.mousey > 0 else -1
+            self.selection %= self.items
+            self.mousey = 0
+
+    def process_key(self, key):
+        """ Processes known key presses """
+        match key:
+            case pygame.K_KP_ENTER | pygame.K_RETURN | pygame.K_RIGHT:
+                self.do_selection()
+                return True
+            case pygame.K_ESCAPE | pygame.K_q | pygame.K_LEFT:
+                self.selection = self.items - 1
+                self.do_selection()
+                return True
+            case pygame.K_UP:
+                self.selection -= 1
+                self.selection %= self.items
+            case pygame.K_DOWN:
+                self.selection += 1
+                self.selection %= self.items
+        return False