koperkapel/gamelib/enemy_roach.py

   1 # Roach utilities
   2
   3 import random
   4
   5 from pgzero.clock import each_tick, unschedule
   6 from functools import partial
   7
   8 from ..roaches import t32_roaches, WorldRoach
   9
  10
  11 def get_enemy_roach(level):
  12     roach = t32_roaches.assemble(WorldRoach(), color=(255, 0, 0, 255))
  13     roach.anchor = (-16, -16)  # this should center them on the tile
  14     roach.game_pos = (0, 0)
  15     roach.health = 5
  16     roach.angle = 0
  17     roach.level = level
  18     roach.move = partial(move, roach)
  19     roach.last_moved = 0
  20     roach.last_attacked= 0
  21     roach.start_pos = None
  22     each_tick(roach.move)
  23     roach.attack = partial(attack, roach)
  24     return roach
  25
  26
  27 def attack(roach, player_pos, player_layer, dt):
  28     """Attack the player if close enough"""
  29     roach.last_attacked += dt
  30     if roach.last_attacked > 0.3:
  31         roach.last_attacked = 0
  32         if player_layer != 'floor':
  33             return None
  34         if abs(player_pos[0] - roach.game_pos[0]) > 1:
  35             return None
  36         if abs(player_pos[1] - roach.game_pos[1]) > 1:
  37             return None
  38         # Attacking, so turn towards the player
  39         if player_pos[0] - roach.game_pos[0] < 0:
  40             roach.angle = 270
  41         elif player_pos[1] - roach.game_pos[1] < 0:
  42             roach.angle = 0
  43         elif player_pos[0] - roach.game_pos[0] > 0:
  44             roach.angle = 90
  45         else:
  46             roach.angle = 270
  47         # Do 1 damage
  48         return 1
  49
  50 def move(roach, dt):
  51     """Enemy roach move method"""
  52     roach.last_moved += dt
  53     if not roach in roach.level.enemies:
  54         unschedule(roach.move)
  55         return
  56     if roach.last_moved > 0.5:
  57         if not roach.start_pos:
  58             roach.start_pos = roach.game_pos
  59         roach.last_moved = 0
  60         attempt = 0
  61         while attempt < 4:
  62             attempt += 1
  63             dx = random.randint(-1, 1)
  64             dy = random.randint(-1, 1)
  65             if abs(roach.game_pos[0] + dx - roach.start_pos[0]) > 2:
  66                 continue
  67             if abs(roach.game_pos[1] + dy - roach.start_pos[1]) > 2:
  68                 continue
  69             if roach.level.can_walk(roach.game_pos[0] + dx, roach.game_pos[1] + dy, 'floor'):
  70                 enemy = roach.level.get_enemy(roach.game_pos[0] + dx, roach.game_pos[1] + dy)
  71                 if enemy and enemy is not roach:
  72                     continue
  73                 roach.game_pos = (roach.game_pos[0] + dx, roach.game_pos[1] + dy)
  74                 if dy == 1:
  75                     roach.angle = 180
  76                 elif dy == -1:
  77                     roach.angle = 0
  78                 elif dx == 1:
  79                     roach.angle = 270
  80                 else:
  81                     roach.angle = 90
  82                 break