# HG changeset patch
# User Neil Muller <drnlmuller@gmail.com>
# Date 1251658006 0
# Node ID 2e88c680672c31b7d2fb0b5ca10e4d3ac083fceb
# Parent  ac3a74352b7490d9d915f6b4e45844f09ca1c168
Minimal fox raid logic

diff -r ac3a74352b74 -r 2e88c680672c gamelib/animal.py
--- a/gamelib/animal.py	Sun Aug 30 18:23:40 2009 +0000
+++ b/gamelib/animal.py	Sun Aug 30 18:46:46 2009 +0000
@@ -1,6 +1,7 @@
 """Class for the various animals in the game"""
 
 import pygame
+import random
 from pgu.vid import Sprite
 
 import data
@@ -43,9 +44,37 @@
 
     def __init__(self, pos):
         image = pygame.image.load(data.filepath('sprites/fox.png'))
+        self.full = False
         Animal.__init__(self, image, pos)
 
     def move(self, gameboard):
         """Foxes will aim to move towards the closest henhouse or free
           chicken"""
-        return self.pos
+        if self.full:
+            return
+        # Find the closest chicken
+        min_dist = 999
+        min_vec = None
+        closest = None
+        for chicken in gameboard.chickens:
+            vec = (chicken.pos[0] - self.pos[0], chicken.pos[1] - self.pos[1])
+            dist = abs(vec[0]) + abs(vec[1])
+            if dist < min_dist:
+                min_dist = dist
+                min_vec = vec
+                closest = chicken
+        xpos, ypos = self.pos
+        if min_vec[0] < 0:
+            xpos -= 1
+        elif min_vec[0] > 0:
+            xpos += 1
+        if min_vec[1] < 0:
+            ypos -= 1
+        elif min_vec[1] > 0:
+            ypos += 1
+        if closest.pos == self.pos:
+            gameboard.remove_chicken(closest)
+            self.full = True
+        self.pos = (xpos, ypos)
+        
+            
diff -r ac3a74352b74 -r 2e88c680672c gamelib/engine.py
--- a/gamelib/engine.py	Sun Aug 30 18:23:40 2009 +0000
+++ b/gamelib/engine.py	Sun Aug 30 18:46:46 2009 +0000
@@ -4,6 +4,7 @@
 import pygame
 from pygame.locals import USEREVENT, QUIT, KEYDOWN, K_ESCAPE, K_n, K_d
 
+from tiles import TILE_MAP
 import gameboard
 import animal
 import random
@@ -42,6 +43,8 @@
 class DayState(State):
     def init(self):
         """Add some chickens to the farm"""
+        # disable timer
+        pygame.time.set_timer(MOVE_FOX_ID, 0)
         # Very simple, we walk around the tilemap, and, for each farm tile,
         # we randomly add a chicken (1 in 10 chance) until we have 5 chickens
         # or we run out of board
@@ -59,9 +62,9 @@
                 x = 0
                 continue
             # See if we place a chicken
-            if tile == 1:
+            if 'grassland' == TILE_MAP[tile]:
                 # Farmland
-                roll = random.randint(1, 10)
+                roll = random.randint(1, 20)
                 # We don't place within a tile of the fence, this is to make things
                 # easier
                 for xx in range(x-1, x+2):
@@ -71,7 +74,7 @@
                         if yy >= height or yy < 0:
                             continue
                         neighbour = self.game.gameboard.tv.get((xx, yy))
-                        if neighbour == 2:
+                        if 'fence' == TILE_MAP[neighbour]:
                             # Fence
                             roll = 10
                 if roll == 1:
@@ -107,6 +110,9 @@
 class NightState(State):
     def init(self):
         """Add some foxes to the farm"""
+        # Add a timer to the event queue
+        self.cycle_count = 0
+        pygame.time.set_timer(MOVE_FOX_ID, 300)
         # Very simple, we walk around the tilemap, and, for each farm tile,
         # we randomly add a chicken (1 in 10 chance) until we have 5 chickens
         # or we run out of board
@@ -123,9 +129,9 @@
                 x = 0
                 continue
             # See if we place a fox
-            if tile == 0:
+            if TILE_MAP[tile] == 'woodland':
                 # Forest
-                roll = random.randint(1, 10)
+                roll = random.randint(1, 20)
                 if roll == 1:
                     # Create a fox
                     foxes += 1
@@ -140,6 +146,11 @@
             return pygame.event.post(START_DAY)
         elif e.type is KEYDOWN and e.key == K_ESCAPE:
             return MainMenuState(self.game)
+        elif e.type is MOVE_FOX_ID:
+            self.cycle_count += 1
+            if self.cycle_count > 15:
+                return pygame.event.post(START_DAY)
+            return self.game.gameboard.move_foxes()
         elif e.type is not QUIT:
             self.game.gameboard.event(e)
 
@@ -154,7 +165,6 @@
         update = self.game.gameboard.update(screen)
         pygame.display.update(update)
 
-
 # pygame events
 
 def events_equal(e1, e2):
@@ -164,4 +174,6 @@
 START_DAY = pygame.event.Event(USEREVENT, name="START_DAY")
 START_NIGHT = pygame.event.Event(USEREVENT, name="START_NIGHT")
 GO_MAIN_MENU = pygame.event.Event(USEREVENT, name="GO_MAIN_MENU")
+MOVE_FOX_ID = USEREVENT + 1
+MOVE_FOXES = pygame.event.Event(MOVE_FOX_ID, name="MOVE_FOXES")
 QUIT = pygame.event.Event(QUIT)
diff -r ac3a74352b74 -r 2e88c680672c gamelib/gameboard.py
--- a/gamelib/gameboard.py	Sun Aug 30 18:23:40 2009 +0000
+++ b/gamelib/gameboard.py	Sun Aug 30 18:46:46 2009 +0000
@@ -82,6 +82,10 @@
             self.tv.sprites.remove(fox)
         self.foxes = [] # Remove all the foxes
 
+    def move_foxes(self):
+        for fox in self.foxes:
+            fox.move(self)
+
     def add_chicken(self, chicken):
         self.chickens.append(chicken)
         self.tv.sprites.append(chicken)
@@ -89,3 +93,13 @@
     def add_fox(self, fox):
         self.foxes.append(fox)
         self.tv.sprites.append(fox)
+
+    def remove_fox(self, fox):
+        if fox in self.foxes:
+            self.foxes.remove(fox)
+            self.tv.sprites.remove(fox)
+
+    def remove_chicken(self, chick):
+        if chick in self.chickens:
+            self.chickens.remove(chick)
+            self.tv.sprites.remove(chick)