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helloworld.py
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/
helloworld.py
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import libtcodpy as libtcod
import textwrap
# Window size
SCREEN_WIDTH = 80
SCREEN_HEIGHT = 50
# Map size
MAP_WIDTH = 80
MAP_HEIGHT = 45
#sizes and coordinates relevant for the GUI
BAR_WIDTH = 20
PANEL_HEIGHT = 7
PANEL_Y = SCREEN_HEIGHT - PANEL_HEIGHT
MSG_X = BAR_WIDTH + 2
MSG_WIDTH = SCREEN_WIDTH - BAR_WIDTH - 2
MSG_HEIGHT = PANEL_HEIGHT - 1
#parameters for dungeon generator
ROOM_MAX_SIZE = 10
ROOM_MIN_SIZE = 6
MAX_ROOMS = 30
MAX_ROOM_MONSTERS = 3
FOV_ALGO = 0 #default FOV algorithm
FOV_LIGHT_WALLS = True
TORCH_RADIUS = 10
LIMIT_FPS = 60
color_dark_wall = libtcod.Color(0, 0, 100)
color_light_wall = libtcod.Color(130, 110, 50)
color_dark_ground = libtcod.Color(50, 50, 150)
color_light_ground = libtcod.Color(200, 180, 50)
class Tile(object):
"""a maptile and its properties"""
def __init__(self, blocked, block_sight=None):
self.blocked = blocked
#by default, if a tile is blocked, it also blocks sight
if block_sight is None:
block_sight = blocked
self.block_sight = block_sight
self.explored = False
class Rect(object):
"""A rectangle on the map, characterising a room"""
def __init__(self, x, y, w, h):
self.x1 = x
self.y1 = y
self.x2 = x + w
self.y2 = y + h
def center(self):
center_x = (self.x1 + self.x2) / 2
center_y = (self.y1 + self.y2) / 2
return (center_x, center_y)
def intersect(self, other):
#returns true if this rectangle intersects with another one
return (self.x1 <= other.x2 and self.x2 >= other.x1 and
self.y1 <= other.y2 and self.y2 >= other.y1)
class Object(object):
"""Generic object represented by a character on the screen"""
def __init__(self, x, y, char, name, color, blocks = False):
self.name = name
self.blocks = blocks
self.x = x
self.y = y
self.char = char
self.color = color
def move(self, dx, dy):
# Move by the given amount
if not is_blocked(self.x + dx, self.y + dy):
self.x += dx
self.y += dy
def draw(self):
if libtcod.map_is_in_fov(fov_map, self.x, self.y):
# set the color and then draw the character that represents this object at its position
libtcod.console_set_default_foreground(con, self.color)
libtcod.console_put_char(con, self.x, self.y, self.char, libtcod.BKGND_NONE)
def clear(self):
libtcod.console_put_char(con, self.x, self.y, ' ', libtcod.BKGND_NONE)
def is_blocked(x, y):
#first test the map tile
if map[x][y].blocked:
return True
#now check for any blocking objects
for object in objects:
if object.blocks and object.x == x and object.y == y:
return True
return False
def create_room(room):
global map
#go through the tiles in the rectangle and make them passable
for x in range(room.x1 + 1, room.x2):
for y in range(room.y1 + 1, room.y2):
map[x][y].blocked = False
map[x][y].block_sight = False
def create_h_tunnel(x1, x2, y):
global map
for x in range(min(x1, x2), max(x1, x2) + 1):
map[x][y].blocked = False
map[x][y].block_sight = False
def create_v_tunnel(y1, y2, x):
global map
#vertical tunnel
for y in range(min(y1, y2), max(y1, y2) + 1):
map[x][y].blocked = False
map[x][y].block_sight = False
def make_map():
global map
# fill map with "blocked" tiles
map = [[ Tile(True)
for y in range(MAP_HEIGHT) ]
for x in range(MAP_WIDTH) ]
rooms = []
num_rooms = 0
for r in range(MAX_ROOMS):
#random width and height
w = libtcod.random_get_int(0, ROOM_MIN_SIZE, ROOM_MAX_SIZE)
h = libtcod.random_get_int(0, ROOM_MIN_SIZE, ROOM_MAX_SIZE)
#random position without going out of the boundaries of the map
x = libtcod.random_get_int(0, 0, MAP_WIDTH - w - 1)
y = libtcod.random_get_int(0, 0, MAP_HEIGHT - h - 1)
#"Rect" class makes rectangles easier to work with
new_room = Rect(x, y, w, h)
#run through the other rooms and see if they intersect with this one
failed = False
for other_room in rooms:
if new_room.intersect(other_room):
failed = True
break
if not failed:
#this means there are no intersections, so this room is valid
#"paint" it to the map's tiles
create_room(new_room)
#add some contents to this room, such as monsters
place_objects(new_room)
#center coordinates of new room, will be useful later
(new_x, new_y) = new_room.center()
room_no = Object(new_x, new_y, chr(65+num_rooms), 'room number', libtcod.white, blocks=False)
objects.insert(0, room_no) #draw early, so monsters are drawn on top
if num_rooms == 0:
#this is the first room, where the player starts at
player.x = new_x
player.y = new_y
else:
#all rooms after the first:
#connect it to the previous room with a tunnel
#center coordinates of previous room
(prev_x, prev_y) = rooms[num_rooms-1].Center()
#draw a coin (random number that is either 0 or 1)
if libtcod.random_get_int(0, 0, 1) == 1:
#first move horizontally, then vertically
create_h_tunnel(prev_x, new_x, prev_y)
create_v_tunnel(prev_y, new_y, new_x)
else:
#first move vertically, then horizontally
create_v_tunnel(prev_y, new_y, prev_x)
create_h_tunnel(prev_x, new_x, new_y)
#finally, append the new room to the list
rooms.append(new_room)
num_rooms += 1
def place_objects(room):
#choose random number of monsters
num_monsters = libtcod.random_get_int(0, 0, MAX_ROOM_MONSTERS)
for i in range(num_monsters):
#choose random spot for this monster
x = libtcod.random_get_int(0, room.x1, room.x2)
y = libtcod.random_get_int(0, room.y1, room.y2)
#only place it if the tile is not blocked
if not is_blocked(x, y):
if libtcod.random_get_int(0, 0, 100) < 80: #80% chance of getting an orc
#create an orc
monster = Object(x, y, 'o', 'orc', libtcod.desaturated_green,
blocks=True)
else:
#create a troll
monster = Object(x, y, 'T', 'troll', libtcod.darker_green,
blocks=True)
objects.append(monster)
def get_names_under_mouse():
global mouse
#return a string with the names of all objects under the mouse
(x, y) = (mouse.cx, mouse.cy)
#create a list with the names of all objects at the mouse's coordinates and in FOV
names = [obj.name for obj in objects
if obj.x == x and obj.y == y and libtcod.map_is_in_fov(fov_map, obj.x, obj.y)]
names = ', '.join(names) #join the names, separated by commas
return names.capitalize()
def render_all():
global fov_map, color_dark_wall, color_light_wall
global color_dark_ground, color_light_ground
global fov_recompute
if fov_recompute:
#recompute FOV if needed (the player moved or something)
fov_recompute = False
libtcod.map_compute_fov(fov_map, player.x, player.y, TORCH_RADIUS, FOV_LIGHT_WALLS, FOV_ALGO)
#go through all tiles, and set their background color according to the FOV
for y in range(MAP_HEIGHT):
for x in range(MAP_WIDTH):
visible = libtcod.map_is_in_fov(fov_map, x, y)
wall = map[x][y].block_sight
if not visible:
#if it's not visible right now, the player can only see it if it's explored
if map[x][y].explored:
if wall:
libtcod.console_set_char_background(con, x, y, color_dark_wall, libtcod.BKGND_SET)
else:
libtcod.console_set_char_background(con, x, y, color_dark_ground, libtcod.BKGND_SET)
else:
#it's visible
if wall:
libtcod.console_set_char_background(con, x, y, color_light_wall, libtcod.BKGND_SET )
else:
libtcod.console_set_char_background(con, x, y, color_light_ground, libtcod.BKGND_SET )
#since it's visible, explore it
map[x][y].explored = True
# draw all objects in the list
for obj in objects:
obj.draw()
# blit the contents of "con" to the root console
libtcod.console_blit(con, 0, 0, MAP_WIDTH, MAP_HEIGHT, 0, 0, 0)
#prepare to render the GUI panel
libtcod.console_set_default_background(panel, libtcod.black)
libtcod.console_clear(panel)
#print the game messages, one line at a time
y = 1
for (line, color) in game_msgs:
libtcod.console_set_default_foreground(panel, color)
libtcod.console_print_ex(panel, MSG_X, y, libtcod.BKGND_NONE, libtcod.LEFT, line)
y += 1
#show the player's stats
render_bar(1, 1, BAR_WIDTH, 'HP', 73, 100,
libtcod.light_red, libtcod.darker_red)
#display names of objects under the mouse
libtcod.console_set_default_foreground(panel, libtcod.light_gray)
libtcod.console_print_ex(panel, 1, 0, libtcod.BKGND_NONE, libtcod.LEFT, get_names_under_mouse())
#blit the contents of "panel" to the root console
libtcod.console_blit(panel, 0, 0, SCREEN_WIDTH, PANEL_HEIGHT, 0, 0, PANEL_Y)
def render_bar(x, y, total_width, name, value, maximum, bar_color, back_color):
#render a bar (HP, experience, etc). first calculate the width of the bar
bar_width = int(float(value) / maximum * total_width)
#render the background first
libtcod.console_set_default_background(panel, back_color)
libtcod.console_rect(panel, x, y, total_width, 1, False, libtcod.BKGND_SCREEN)
#now render the bar on top
libtcod.console_set_default_background(panel, bar_color)
if bar_width > 0:
libtcod.console_rect(panel, x, y, bar_width, 1, False, libtcod.BKGND_SCREEN)
#finally, some centered text with the values
libtcod.console_set_default_foreground(panel, libtcod.white)
libtcod.console_print_ex(panel, x + total_width / 2, y, libtcod.BKGND_NONE, libtcod.CENTER,
name + ': ' + str(value) + '/' + str(maximum))
def message(new_msg, color = libtcod.white):
#split the message if necessary, among multiple lines
new_msg_lines = textwrap.wrap(new_msg, MSG_WIDTH)
for line in new_msg_lines:
#if the buffer is full, remove the first line to make room for the new one
if len(game_msgs) == MSG_HEIGHT:
del game_msgs[0]
#add the new line as a tuple, with the text and the color
game_msgs.append( (line, color) )
def player_move_or_attack(dx, dy):
global fov_recompute
#the coordinates the player is moving to/attacking
x = player.x + dx
y = player.y + dy
#try to find an attackable object there
target = None
for object in objects:
if object.x == x and object.y == y:
target = object
break
#attack if target found, move otherwise
if target is not None:
message('The ' + target.name + ' laughs at your puny efforts to attack him!', libtcod.orange)
else:
player.move(dx, dy)
fov_recompute = True
def handle_keys():
global playerx, playery, fov_recompute
#key = libtcod.console_wait_for_keypress(True)
if key.vk == libtcod.KEY_ENTER and key.lalt:
libtcod.console_set_fullscreen(not libtcod.console_is_fullscreen())
elif key.vk == libtcod.KEY_ESCAPE:
return "exit"
if game_state == 'playing':
#movement keys
if key.vk == libtcod.KEY_UP:
player_move_or_attack(0, -1)
elif key.vk == libtcod.KEY_DOWN:
player_move_or_attack(0, 1)
elif key.vk == libtcod.KEY_LEFT:
player_move_or_attack(-1, 0)
elif key.vk == libtcod.KEY_RIGHT:
player_move_or_attack(1, 0)
else:
return 'didnt-take-turn'
#############################################
# Initialization & Main Loop
#############################################
libtcod.console_set_custom_font('fonts/arial12x12.png', libtcod.FONT_TYPE_GREYSCALE | libtcod.FONT_LAYOUT_TCOD)
libtcod.console_init_root(SCREEN_WIDTH, SCREEN_HEIGHT, 'python/libtcod tutorial', False)
con = libtcod.console_new(MAP_WIDTH, MAP_HEIGHT)
panel = libtcod.console_new(SCREEN_WIDTH, PANEL_HEIGHT)
libtcod.sys_set_fps(LIMIT_FPS)
#create object representing the player
player = Object(0, 0, '@', 'player', libtcod.white, blocks=True)
#the list of objects starting with the player
objects = [player]
make_map()
#create the FOV map, according to the generated map
fov_map = libtcod.map_new(MAP_WIDTH, MAP_HEIGHT)
for y in range(MAP_HEIGHT):
for x in range(MAP_WIDTH):
libtcod.map_set_properties(fov_map, x, y, not map[x][y].block_sight, not map[x][y].blocked)
fov_recompute = True
game_state = 'playing'
player_action = None
#create the list of game messages and their colors, starts empty
game_msgs = []
#a warm welcoming message!
message('Welcome stranger! Prepare to perish in the Tombs of the Ancient Kings.', libtcod.red)
mouse = libtcod.Mouse()
key = libtcod.Key()
# Keeps running as long as the window is not closed
# This is effectively the main loop
while not libtcod.console_is_window_closed():
libtcod.sys_check_for_event(libtcod.EVENT_KEY_PRESS|libtcod.EVENT_MOUSE,key,mouse)
# Render to the offscreen console
render_all()
libtcod.console_flush() # draw the console
# Clear objects from their old locations before we move them next time
for obj in objects:
obj.clear()
if key.vk == libtcod.KEY_SPACE:
fps = libtcod.sys_get_fps()
print "FPS: " + str(fps)
player_action = handle_keys()
if player_action == "exit":
break
#let monsters take their turn
# if game_state == 'playing' and player_action != 'didnt-take-turn':
# for object in objects:
# if object != player:
# print 'The ' + object.name + ' growls!'