squirrel-battle/squirrelbattle/game.py

461 lines
17 KiB
Python

# Copyright (C) 2020 by ÿnérant, eichhornchen, nicomarg, charlse
# SPDX-License-Identifier: GPL-3.0-or-later
from json import JSONDecodeError
from random import randint
from typing import Any, Optional, List
import curses
import json
import os
import sys
from .entities.player import Player
from .enums import GameMode, KeyValues, DisplayActions
from .interfaces import Map, Logs
from .resources import ResourceManager
from .settings import Settings
from . import menus
from .translations import gettext as _, Translator
class Game:
"""
The game object controls all actions in the game.
"""
maps: List[Map]
map_index: int
player: Player
screen: Any
# display_actions is a display interface set by the bootstrapper
display_actions: callable
def __init__(self) -> None:
"""
Initiates the game.
"""
self.state = GameMode.MAINMENU
self.waiting_for_friendly_key = False
self.waiting_for_launch_key = False
self.is_in_store_menu = True
self.is_in_chest_menu = True
self.settings = Settings()
self.settings.load_settings()
self.settings.write_settings()
Translator.setlocale(self.settings.LOCALE)
self.main_menu = menus.MainMenu()
self.settings_menu = menus.SettingsMenu()
self.settings_menu.update_values(self.settings)
self.inventory_menu = menus.InventoryMenu()
self.store_menu = menus.StoreMenu()
self.chest_menu = menus.ChestMenu()
self.logs = Logs()
self.message = None
def new_game(self) -> None:
"""
Creates a new game on the screen.
"""
# TODO generate a new map procedurally
self.maps = []
self.map_index = 0
self.map = Map.load(ResourceManager.get_asset_path("example_map.txt"))
self.map.logs = self.logs
self.logs.clear()
self.player = Player()
self.map.add_entity(self.player)
self.player.move(self.map.start_y, self.map.start_x)
self.map.spawn_random_entities(randint(3, 10))
self.inventory_menu.update_player(self.player)
@property
def map(self) -> Map:
"""
Return the current map where the user is.
"""
return self.maps[self.map_index]
@map.setter
def map(self, m: Map) -> None:
"""
Redefine the current map.
"""
if len(self.maps) == self.map_index:
# Insert new map
self.maps.append(m)
# Redefine the current map
self.maps[self.map_index] = m
def run(self, screen: Any) -> None: # pragma no cover
"""
Main infinite loop.
We wait for the player's action, then we do what should be done
when a key gets pressed.
"""
screen.refresh()
while True:
screen.erase()
screen.noutrefresh()
self.display_actions(DisplayActions.REFRESH)
curses.doupdate()
try:
key = screen.getkey()
except KeyboardInterrupt:
exit(0)
return
if key == "KEY_MOUSE":
_ignored1, x, y, _ignored2, attr = curses.getmouse()
self.display_actions(DisplayActions.MOUSE, y, x, attr)
else:
self.handle_key_pressed(
KeyValues.translate_key(key, self.settings), key)
def handle_key_pressed(self, key: Optional[KeyValues], raw_key: str = '')\
-> None:
"""
Indicates what should be done when a given key is pressed,
according to the current game state.
"""
if self.message:
self.message = None
self.display_actions(DisplayActions.REFRESH)
return
if self.state == GameMode.PLAY:
if self.waiting_for_friendly_key:
# The player requested to talk with a friendly entity
self.handle_friendly_entity_chat(key)
elif self.waiting_for_launch_key:
# The player requested to launch
self.handle_launch(key)
else:
self.handle_key_pressed_play(key)
elif self.state == GameMode.INVENTORY:
self.handle_key_pressed_inventory(key)
elif self.state == GameMode.MAINMENU:
self.handle_key_pressed_main_menu(key)
elif self.state == GameMode.SETTINGS:
self.settings_menu.handle_key_pressed(key, raw_key, self)
elif self.state == GameMode.STORE:
self.handle_key_pressed_store(key)
elif self.state == GameMode.CHEST:
self.handle_key_pressed_chest(key)
elif self.state == GameMode.CREDITS:
self.state = GameMode.MAINMENU
self.display_actions(DisplayActions.REFRESH)
def handle_key_pressed_play(self, key: KeyValues) -> None: # noqa: C901
"""
In play mode, arrows or zqsd move the main character.
"""
if key == KeyValues.UP:
if self.player.move_up():
self.map.tick(self.player)
elif key == KeyValues.DOWN:
if self.player.move_down():
self.map.tick(self.player)
elif key == KeyValues.LEFT:
if self.player.move_left():
self.map.tick(self.player)
elif key == KeyValues.RIGHT:
if self.player.move_right():
self.map.tick(self.player)
elif key == KeyValues.INVENTORY:
self.state = GameMode.INVENTORY
self.display_actions(DisplayActions.UPDATE)
elif key == KeyValues.USE and self.player.equipped_main:
if self.player.equipped_main:
self.player.equipped_main.use()
if self.player.equipped_secondary:
self.player.equipped_secondary.use()
elif key == KeyValues.LAUNCH:
# Wait for the direction to launch in
self.waiting_for_launch_key = True
elif key == KeyValues.SPACE:
self.state = GameMode.MAINMENU
elif key == KeyValues.CHAT:
# Wait for the direction of the friendly entity
self.waiting_for_friendly_key = True
elif key == KeyValues.WAIT:
self.map.tick(self.player)
elif key == KeyValues.LADDER:
self.handle_ladder()
def handle_ladder(self) -> None:
"""
The player pressed the ladder key to switch map
"""
# On a ladder, we switch level
y, x = self.player.y, self.player.x
if not self.map.tiles[y][x].is_ladder():
return
# We move up on the ladder of the beginning,
# down at the end of the stage
move_down = y != self.map.start_y and x != self.map.start_x
old_map = self.map
self.map_index += 1 if move_down else -1
if self.map_index == -1:
self.map_index = 0
return
while self.map_index >= len(self.maps):
# TODO: generate a new map
self.maps.append(Map.load(ResourceManager.get_asset_path(
"example_map_2.txt")))
new_map = self.map
new_map.floor = self.map_index
old_map.remove_entity(self.player)
new_map.add_entity(self.player)
if move_down:
self.player.move(self.map.start_y, self.map.start_x)
self.logs.add_message(
_("The player climbs down to the floor {floor}.")
.format(floor=-self.map_index))
else:
# Find the ladder of the end of the game
ladder_y, ladder_x = -1, -1
for y in range(self.map.height):
for x in range(self.map.width):
if (y, x) != (self.map.start_y, self.map.start_x) \
and self.map.tiles[y][x].is_ladder():
ladder_y, ladder_x = y, x
break
self.player.move(ladder_y, ladder_x)
self.logs.add_message(
_("The player climbs up the floor {floor}.")
.format(floor=-self.map_index))
self.display_actions(DisplayActions.UPDATE)
def handle_friendly_entity_chat(self, key: KeyValues) -> None:
"""
If the player tries to talk to a friendly entity, the game waits for
a directional key to be pressed, verifies there is a friendly entity
in that direction and then lets the player interact with it.
"""
if not self.waiting_for_friendly_key:
return
self.waiting_for_friendly_key = False
if key == KeyValues.UP:
xp = self.player.x
yp = self.player.y - 1
elif key == KeyValues.DOWN:
xp = self.player.x
yp = self.player.y + 1
elif key == KeyValues.LEFT:
xp = self.player.x - 1
yp = self.player.y
elif key == KeyValues.RIGHT:
xp = self.player.x + 1
yp = self.player.y
else:
return
if self.map.entity_is_present(yp, xp):
for entity in self.map.entities:
if entity.is_friendly() and entity.x == xp and \
entity.y == yp:
msg = entity.talk_to(self.player)
self.logs.add_message(msg)
if entity.is_merchant():
self.state = GameMode.STORE
self.is_in_store_menu = True
self.store_menu.update_merchant(entity)
self.display_actions(DisplayActions.UPDATE)
elif entity.is_chest():
self.state = GameMode.CHEST
self.is_in_chest_menu = True
self.chest_menu.update_chest(entity)
self.display_actions(DisplayActions.UPDATE)
def handle_launch(self, key: KeyValues) -> None:
"""
If the player tries to throw something in a direction, the game looks
for entities in that direction and within the range of the player's
weapon and adds damage
"""
if not self.waiting_for_launch_key:
return
self.waiting_for_launch_key = False
if key == KeyValues.UP:
direction = 0
elif key == KeyValues.DOWN:
direction = 2
elif key == KeyValues.LEFT:
direction = 3
elif key == KeyValues.RIGHT:
direction = 1
else:
return
if self.player.equipped_main:
self.player.equipped_main.throw(direction)
def handle_key_pressed_inventory(self, key: KeyValues) -> None:
"""
In the inventory menu, we can interact with items or close the menu.
"""
if key == KeyValues.SPACE or key == KeyValues.INVENTORY:
self.state = GameMode.PLAY
elif key == KeyValues.UP:
self.inventory_menu.go_up()
elif key == KeyValues.DOWN:
self.inventory_menu.go_down()
if self.inventory_menu.values and not self.player.dead:
if key == KeyValues.USE:
self.inventory_menu.validate().use()
elif key == KeyValues.EQUIP:
self.inventory_menu.validate().equip()
elif key == KeyValues.DROP:
self.inventory_menu.validate().drop()
# Ensure that the cursor has a good position
self.inventory_menu.position = min(self.inventory_menu.position,
len(self.inventory_menu.values)
- 1)
def handle_key_pressed_store(self, key: KeyValues) -> None:
"""
In a store menu, we can buy items or close the menu.
"""
menu = self.store_menu if self.is_in_store_menu else self.inventory_menu
if key == KeyValues.SPACE or key == KeyValues.INVENTORY:
self.state = GameMode.PLAY
elif key == KeyValues.UP:
menu.go_up()
elif key == KeyValues.DOWN:
menu.go_down()
elif key == KeyValues.LEFT:
self.is_in_store_menu = False
self.display_actions(DisplayActions.UPDATE)
elif key == KeyValues.RIGHT:
self.is_in_store_menu = True
self.display_actions(DisplayActions.UPDATE)
if menu.values and not self.player.dead:
if key == KeyValues.ENTER:
item = menu.validate()
owner = self.store_menu.merchant if self.is_in_store_menu \
else self.player
buyer = self.player if self.is_in_store_menu \
else self.store_menu.merchant
flag = item.be_sold(buyer, owner)
if not flag:
self.message = _("The buyer does not have enough money")
self.display_actions(DisplayActions.UPDATE)
# Ensure that the cursor has a good position
menu.position = min(menu.position, len(menu.values) - 1)
def handle_key_pressed_chest(self, key: KeyValues) -> None:
"""
In a chest menu, we can take or put items or close the menu.
"""
menu = self.chest_menu if self.is_in_chest_menu else self.inventory_menu
if key == KeyValues.SPACE or key == KeyValues.INVENTORY:
self.state = GameMode.PLAY
elif key == KeyValues.UP:
menu.go_up()
elif key == KeyValues.DOWN:
menu.go_down()
elif key == KeyValues.LEFT:
self.is_in_chest_menu = False
self.display_actions(DisplayActions.UPDATE)
elif key == KeyValues.RIGHT:
self.is_in_chest_menu = True
self.display_actions(DisplayActions.UPDATE)
if menu.values and not self.player.dead:
if key == KeyValues.ENTER:
item = menu.validate()
owner = self.chest_menu.chest if self.is_in_chest_menu \
else self.player
buyer = self.player if self.is_in_chest_menu \
else self.chest_menu.chest
item.be_sold(buyer, owner, for_free=True)
self.display_actions(DisplayActions.UPDATE)
# Ensure that the cursor has a good position
menu.position = min(menu.position, len(menu.values) - 1)
def handle_key_pressed_main_menu(self, key: KeyValues) -> None:
"""
In the main menu, we can navigate through different options.
"""
if key == KeyValues.DOWN:
self.main_menu.go_down()
if key == KeyValues.UP:
self.main_menu.go_up()
if key == KeyValues.ENTER:
option = self.main_menu.validate()
if option == menus.MainMenuValues.START:
self.new_game()
self.display_actions(DisplayActions.UPDATE)
self.state = GameMode.PLAY
if option == menus.MainMenuValues.RESUME:
self.state = GameMode.PLAY
elif option == menus.MainMenuValues.SAVE:
self.save_game()
elif option == menus.MainMenuValues.LOAD:
self.load_game()
elif option == menus.MainMenuValues.SETTINGS:
self.state = GameMode.SETTINGS
elif option == menus.MainMenuValues.EXIT:
sys.exit(0)
def save_state(self) -> dict:
"""
Saves the game to a dictionary.
"""
return dict(map_index=self.map_index,
maps=[m.save_state() for m in self.maps])
def load_state(self, d: dict) -> None:
"""
Loads the game from a dictionary.
"""
try:
self.map_index = d["map_index"]
self.maps = [Map().load_state(map_dict) for map_dict in d["maps"]]
except KeyError:
self.message = _("Some keys are missing in your save file.\n"
"Your save seems to be corrupt. It got deleted.")
os.unlink(ResourceManager.get_config_path("save.json"))
self.display_actions(DisplayActions.UPDATE)
return
players = self.map.find_entities(Player)
if not players:
self.message = _("No player was found on this map!\n"
"Maybe you died?")
self.player.health = 0
self.display_actions(DisplayActions.UPDATE)
return
self.player = players[0]
self.map.compute_visibility(self.player.y, self.player.x,
self.player.vision)
self.display_actions(DisplayActions.UPDATE)
def load_game(self) -> None:
"""
Loads the game from a file.
"""
file_path = ResourceManager.get_config_path("save.json")
if os.path.isfile(file_path):
with open(file_path, "r") as f:
try:
state = json.loads(f.read())
self.load_state(state)
except JSONDecodeError:
self.message = _("The JSON file is not correct.\n"
"Your save seems corrupted. "
"It got deleted.")
os.unlink(file_path)
self.display_actions(DisplayActions.UPDATE)
def save_game(self) -> None:
"""
Saves the game to a file.
"""
with open(ResourceManager.get_config_path("save.json"), "w") as f:
f.write(json.dumps(self.save_state()))