1"""
  2Module for all game observers.
  3"""
  4from . import constants as c
  5from .components import attackitems
  6from . import setup
  7
  8class Battle(object):
  9    """
 10    Observes events of battle and passes info to components.
 11    """
 12    def __init__(self, level):
 13        self.level = level
 14        self.info_box = level.info_box
 15        self.select_box = level.info_box
 16        self.arrow = level.arrow
 17        self.player = level.player
 18        self.enemies = level.enemy_group
 19        self.enemy_list = level.enemy_list
 20        self.enemy_index = level.enemy_index
 21        self.set_observer_for_enemies()
 22        self.event_dict = self.make_event_dict()
 23
 24    def set_observer_for_enemies(self):
 25        for enemy in self.enemies:
 26            enemy.observers.append(self)
 27
 28    def make_event_dict(self):
 29        """
 30        Make a dictionary of events the Observer can
 31        receive.
 32        """
 33        event_dict = {c.END_BATTLE: self.end_battle,
 34                      c.SELECT_ACTION: self.select_action,
 35                      c.SELECT_ITEM: self.select_item,
 36                      c.SELECT_ENEMY: self.select_enemy,
 37                      c.SELECT_MAGIC: self.select_magic,
 38                      c.ENEMY_ATTACK: self.enemy_attack,
 39                      c.SWITCH_ENEMY: self.switch_enemy,
 40                      c.PLAYER_ATTACK: self.player_attack,
 41                      c.ATTACK_ANIMATION: self.enemy_damaged,
 42                      c.RUN_AWAY: self.run_away,
 43                      c.BATTLE_WON: self.battle_won,
 44                      c.ENEMY_ATTACK_DAMAGE: self.display_enemy_attack_damage,
 45                      c.DRINK_HEALING_POTION: self.drink_healing_potion}
 46
 47        return event_dict
 48
 49    def on_notify(self, event):
 50        """
 51        Notify Observer of event.
 52        """
 53        if event in self.event_dict:
 54            self.event_dict[event]()
 55
 56    def end_battle(self):
 57        """
 58        End Battle and flip to previous state.
 59        """
 60        self.level.end_battle()
 61
 62    def select_action(self):
 63        """
 64        Set components to select action.
 65        """
 66        self.level.state = c.SELECT_ACTION
 67        self.arrow.index = 0
 68        self.arrow.state = c.SELECT_ACTION
 69        self.arrow.image = setup.GFX['smallarrow']
 70        self.info_box.state = c.SELECT_ACTION
 71
 72    def select_enemy(self):
 73        self.level.state = c.SELECT_ENEMY
 74        self.arrow.index = 0
 75        self.arrow.state = c.SELECT_ENEMY
 76
 77    def select_item(self):
 78        self.level.state = c.SELECT_ITEM
 79        self.info_box.state = c.SELECT_ITEM
 80        self.arrow.become_select_item_state()
 81
 82    def select_magic(self):
 83        self.level.state = c.SELECT_MAGIC
 84        self.info_box.state = c.SELECT_MAGIC
 85        self.arrow.become_select_magic_state()
 86
 87    def enemy_attack(self):
 88        enemy = self.level.enemy_list[self.level.enemy_index]
 89        enemy.enter_enemy_attack_state()
 90        self.info_box.state = c.ENEMY_ATTACK
 91
 92    def switch_enemy(self):
 93        """Switch which enemy is attacking player."""
 94        if self.level.enemy_index < len(self.level.enemy_list) - 1:
 95            self.level.enemy_index += 1
 96            self.on_notify(c.ENEMY_ATTACK)
 97
 98    def display_enemy_attack_damage(self):
 99        if self.enemy_index > len(self.enemy_list) - 1:
100            self.enemy_index = 0
101        enemy = self.enemy_list[self.enemy_index]
102        player_damage = enemy.calculate_hit()
103        self.level.damage_points.add(
104            attackitems.HealthPoints(player_damage,
105                                     self.player.rect.topright))
106        self.info_box.set_player_damage(player_damage)
107        self.info_box.state = c.DISPLAY_ENEMY_ATTACK_DAMAGE
108        self.level.state = c.DISPLAY_ENEMY_ATTACK_DAMAGE
109        self.level.set_timer_to_current_time()
110        self.level.player_damaged(player_damage)
111        if player_damage:
112            self.player.damaged = True
113
114    def player_attack(self):
115        enemy_posx = self.arrow.rect.x + 60
116        enemy_posy = self.arrow.rect.y - 20
117        enemy_pos = (enemy_posx, enemy_posy)
118        enemy_to_attack = None
119
120        for enemy in self.enemies:
121            if enemy.rect.topleft == enemy_pos:
122                enemy_to_attack = enemy
123
124        self.player.enter_attack_state(enemy_to_attack)
125        self.arrow.become_invisible_surface()
126
127    def enemy_damaged(self):
128        """
129        Make an attack animation over attacked enemy.
130        """
131        enemy_damage = self.player.calculate_hit()
132        self.level.damage_points.add(
133            attackitems.HealthPoints(enemy_damage,
134                                     self.player.attacked_enemy.rect.topright))
135
136        self.info_box.set_enemy_damage(enemy_damage)
137        self.info_box.state = c.ENEMY_HIT
138
139        self.arrow.state = c.SELECT_ACTION
140        self.arrow.index = 0
141        self.level.attack_enemy(enemy_damage)
142        self.level.set_timer_to_current_time()
143        self.level.state = c.ENEMY_HIT
144
145    def run_away(self):
146        self.level.end_battle()
147
148    def battle_won(self):
149        self.level.end_battle()
150
151    def drink_healing_potion(self):
152        """
153        Give player a healing potion.
154        """
155        self.player.healing = True
156        self.level.set_timer_to_current_time()
157        self.level.state = c.DRINK_HEALING_POTION
158        self.arrow.become_invisible_surface()
159        self.level.enemy_index = 0
160        self.level.damage_points.add(
161            attackitems.HealthPoints(30,
162                                     self.player.rect.topright,
163                                     False))
164        self.level.player_healed(30)
165        self.info_box.state = c.DRINK_HEALING_POTION
166
167
168
169