Only move to viable actions and softer beeping (also beeping centralized to easier...
[naja.git] / naja / widgets / info_area.py
index d7ad07de421d41a5879ee26322ed2d10dd0fd87e..1f656feba3c08e8c54efc873fe5e71d41022b2d9 100644 (file)
@@ -4,11 +4,12 @@ Widget for the game board information area.
 import pygame
 import pygame.locals as pgl
 
-from naja.constants import (INFO_SIZE, EIGHT_BIT_SCALE, MOVE, ACT, KEYS,
+from naja.constants import (INFO_SIZE, EIGHT_BIT_SCALE, ACT, KEYS,
                             EXAMINE)
 from naja.events import finish_event
 from naja.resources import resources
 from naja.resources.mutators import EIGHT_BIT
+from naja.sound import sound
 
 from naja.widgets.base import Widget
 from naja.widgets.tile import BIT_MAP
@@ -16,19 +17,17 @@ from naja.widgets.text import TextBoxWidget, TextWidget
 
 
 HINTS = {
-        MOVE: "Move using the arrow keys.\nPress SPACE to stay in place\n"
-              "Press TAB to change to Examine mode",
-        ACT: "Choose an action using the Up/Down keys.\n"
-             "Press Return to execute the action.",
-        EXAMINE: "Select a card to examine using the arrow keys.\n"
-                 "Press TAB to change to Move mode",
-        }
+    ACT: ("Choose an action using the Up/Down keys.\n"
+          "Press Return to execute the action."),
+    EXAMINE: "Select a card to examine using the arrow keys.",
+}
+
+HINT_LEGAL_MOVE = "\nPress Return to move to this card."
 
 TITLES = {
-        MOVE: "Move the Robot",
-        ACT: "Choose an Action",
-        EXAMINE: "Select a Card",
-        }
+    ACT: "Choose an Action",
+    EXAMINE: "Select a Card",
+}
 
 
 class InfoAreaWidget(Widget):
@@ -38,10 +37,12 @@ class InfoAreaWidget(Widget):
     def __init__(self, pos, state):
         super(InfoAreaWidget, self).__init__(pos, INFO_SIZE)
         self.state = state
+        self.chosen = None
+        self.card_position = state.player.position
         self.set_position(state.player.position)
 
     def prepare(self):
-        if self.state.gameboard.player_mode in (ACT, MOVE):
+        if self.state.gameboard.player_mode == ACT:
             self.set_position(self.state.player.position)
         self.surface = pygame.surface.Surface(INFO_SIZE)
         self.surface.fill((0, 0, 0))
@@ -61,26 +62,23 @@ class InfoAreaWidget(Widget):
         for choice, action in enumerate(self.card.actions):
             y_offset = self.prepare_action(choice, action, y_offset)
         # We cheat horribly for layout reasons
-        hint = TextBoxWidget((0, 0), HINTS[self.state.gameboard.player_mode],
-                             box_width=INFO_SIZE[0] // EIGHT_BIT_SCALE)
+        hint_text = HINTS[self.state.gameboard.player_mode]
+        if self.state.gameboard.player_mode == EXAMINE:
+            if self.card_position in self.state.player.legal_moves():
+                hint_text += HINT_LEGAL_MOVE
+
+        hint = TextBoxWidget((4, 0), hint_text, padding=2,
+                             box_width=(INFO_SIZE[0] - 4) // EIGHT_BIT_SCALE)
         hint.prepare()
         y_offset = INFO_SIZE[1] - hint.surface.get_rect().height
-        self.surface.blit(hint.surface, (0, y_offset))
+        self.surface.blit(hint.surface, (4, y_offset))
 
     def prepare_action(self, choice, action, y_offset):
-        if action.required_bits:
-            img_name = BIT_MAP[action.required_bits].replace(
-                '.png', '_small.png')
-            img = resources.get_image(img_name,
-                                      transforms=(EIGHT_BIT,))
-            self.surface.blit(img, (0, y_offset))
-            y_offset += 8
         text = TextBoxWidget(
-            (12, y_offset), action.get_text(),
-            box_width=(INFO_SIZE[0] - 12) // EIGHT_BIT_SCALE,
+            (18, y_offset), action.get_text(),
+            box_width=(INFO_SIZE[0] - 16) // EIGHT_BIT_SCALE,
             fontsize=28)
         text.render(self.surface)
-
         # self.chosen may be None, in which case we don't draw the border.
         if choice == self.chosen:
             if not action.check_available(self.state.player):
@@ -90,12 +88,19 @@ class InfoAreaWidget(Widget):
             bottom = y_offset + text.surface.get_rect().height
             right = text.surface.get_rect().width + 12
             pygame.draw.lines(self.surface, colour, True,
-                              [(12, y_offset), (right, y_offset),
-                               (right, bottom), (12, bottom)], 4)
+                              [(18, y_offset), (right, y_offset),
+                               (right, bottom), (18, bottom)], 4)
+        if action.required_bits:
+            img_name = BIT_MAP[action.required_bits].replace(
+                '.png', '_small.png')
+            img = resources.get_image(img_name,
+                                      transforms=(EIGHT_BIT,))
+            self.surface.blit(img, (0, y_offset))
         return y_offset + text.surface.get_rect().height + 16
 
     def set_position(self, position):
-        self.card = self.state.board_locations[position]
+        self.card_position = position
+        self.card = self.state.board_locations[self.card_position]
         if self.state.gameboard.player_mode == ACT:
             if self.chosen is None:
                 self.chosen = 0
@@ -105,26 +110,48 @@ class InfoAreaWidget(Widget):
     def draw(self, surface):
         surface.blit(self.surface, self.pos)
 
+    def next_viable_action(self, step=1):
+        num_actions = len(self.card.actions)
+        if num_actions == 0:
+            return
+        player = self.state.player
+        chosen = self.chosen
+        for i in range(num_actions - 1):
+            # loop through each action at most once.
+            chosen = (chosen + step) % num_actions
+            action = self.card.actions[chosen]
+            if action.check_available(player):
+                sound.play_sound('change_action.ogg', volume=0.05)
+                self.chosen = chosen
+
+    def prev_viable_action(self):
+        return self.next_viable_action(step=-1)
+
+    def try_perform_action(self):
+        player = self.state.player
+        action = self.card.actions[self.chosen]
+        if not action.check_available(player):
+            sound.play_sound('error.ogg')
+        else:
+            action.perform_action(self.state.gameboard, self.card)
+            self.state.gameboard.replace_card(player.position)
+            self.state.gameboard.change_mode(EXAMINE)
+            self.set_position(player.position)
+
     def handle_event(self, ev):
-        if self.state.gameboard.player_mode in (MOVE, EXAMINE):
+        if self.state.gameboard.player_mode == EXAMINE:
             return super(InfoAreaWidget, self).handle_event(ev)
         if ev.type == pgl.KEYDOWN:
             if ev.key in KEYS.SELECT:
-                player = self.state.player
-                action = self.card.actions[self.chosen]
-                if not action.check_available(player):
-                    print "BEEP!"
-                else:
-                    action.perform_action(self.state.gameboard, self.card)
-                    self.state.gameboard.replace_card(player.position)
-                    self.state.gameboard.change_mode(MOVE)
+                self.try_perform_action()
                 return finish_event()
             if ev.key in KEYS.UP:
-                if self.chosen > 0:
-                    self.chosen -= 1
+                self.next_viable_action()
                 return finish_event()
             if ev.key in KEYS.DOWN:
-                if self.chosen + 1 < len(self.card.actions):
-                    self.chosen += 1
+                self.prev_viable_action()
+                return finish_event()
+            if ev.key in KEYS.SWITCH:
+                self.next_viable_action()
                 return finish_event()
         return super(InfoAreaWidget, self).handle_event(ev)