Difference between revisions of "Complete Roguelike Tutorial, using python+libtcod, part 8 code"
Jump to navigation
Jump to search
(code bug fix: map_set_properties had switched arguments (would manifest when adding pathfinding)) |
|||
(4 intermediate revisions by 3 users not shown) | |||
Line 1: | Line 1: | ||
<center><table border="0" cellpadding="10" cellspacing="0" style="background:#F0E68C"><tr><td><center> | <center><table border="0" cellpadding="10" cellspacing="0" style="background:#F0E68C"><tr><td><center> | ||
This is part of | This is part of a series of tutorials; the main page can be found [[Complete Roguelike Tutorial, using python+libtcod|here]]. | ||
The tutorial uses libtcod version 1.6.0 and above. | |||
If you choose to use 1.5.1, you can find the old version [http://www.roguebasin.com/index.php?title=Complete_Roguelike_Tutorial,_using_python%2Blibtcod,_part_8_code&oldid=42397 here].<br/> | |||
If you choose to use 1.5.0, you can find the old version [http://roguebasin.roguelikedevelopment.org/index.php?title=Complete_Roguelike_Tutorial,_using_python%2Blibtcod,_part_8_code&oldid=29876 here]. | |||
</center></td></tr></table></center> | </center></td></tr></table></center> | ||
Line 10: | Line 15: | ||
import math | import math | ||
import textwrap | import textwrap | ||
#actual size of the window | #actual size of the window | ||
SCREEN_WIDTH = 80 | SCREEN_WIDTH = 80 | ||
SCREEN_HEIGHT = 50 | SCREEN_HEIGHT = 50 | ||
#size of the map | #size of the map | ||
MAP_WIDTH = 80 | MAP_WIDTH = 80 | ||
MAP_HEIGHT = 43 | MAP_HEIGHT = 43 | ||
#sizes and coordinates relevant for the GUI | #sizes and coordinates relevant for the GUI | ||
BAR_WIDTH = 20 | BAR_WIDTH = 20 | ||
Line 27: | Line 32: | ||
MSG_HEIGHT = PANEL_HEIGHT - 1 | MSG_HEIGHT = PANEL_HEIGHT - 1 | ||
INVENTORY_WIDTH = 50 | INVENTORY_WIDTH = 50 | ||
#parameters for dungeon generator | #parameters for dungeon generator | ||
ROOM_MAX_SIZE = 10 | ROOM_MAX_SIZE = 10 | ||
Line 34: | Line 39: | ||
MAX_ROOM_MONSTERS = 3 | MAX_ROOM_MONSTERS = 3 | ||
MAX_ROOM_ITEMS = 2 | MAX_ROOM_ITEMS = 2 | ||
#spell values | #spell values | ||
HEAL_AMOUNT = 4 | HEAL_AMOUNT = 4 | ||
FOV_ALGO = 0 #default FOV algorithm | FOV_ALGO = 0 #default FOV algorithm | ||
FOV_LIGHT_WALLS = True #light walls or not | FOV_LIGHT_WALLS = True #light walls or not | ||
TORCH_RADIUS = 10 | TORCH_RADIUS = 10 | ||
LIMIT_FPS = 20 #20 frames-per-second maximum | LIMIT_FPS = 20 #20 frames-per-second maximum | ||
color_dark_wall = libtcod.Color(0, 0, 100) | color_dark_wall = libtcod.Color(0, 0, 100) | ||
color_light_wall = libtcod.Color(130, 110, 50) | color_light_wall = libtcod.Color(130, 110, 50) | ||
color_dark_ground = libtcod.Color(50, 50, 150) | color_dark_ground = libtcod.Color(50, 50, 150) | ||
color_light_ground = libtcod.Color(200, 180, 50) | color_light_ground = libtcod.Color(200, 180, 50) | ||
class Tile: | class Tile: | ||
#a tile of the map and its properties | #a tile of the map and its properties | ||
def __init__(self, blocked, block_sight = None): | def __init__(self, blocked, block_sight = None): | ||
self.blocked = blocked | self.blocked = blocked | ||
#all tiles start unexplored | #all tiles start unexplored | ||
self.explored = False | self.explored = False | ||
#by default, if a tile is blocked, it also blocks sight | #by default, if a tile is blocked, it also blocks sight | ||
if block_sight is None: block_sight = blocked | if block_sight is None: block_sight = blocked | ||
self.block_sight = block_sight | self.block_sight = block_sight | ||
class Rect: | class Rect: | ||
#a rectangle on the map. used to characterize a room. | #a rectangle on the map. used to characterize a room. | ||
Line 71: | Line 76: | ||
self.x2 = x + w | self.x2 = x + w | ||
self.y2 = y + h | self.y2 = y + h | ||
def center(self): | def center(self): | ||
center_x = (self.x1 + self.x2) / 2 | center_x = (self.x1 + self.x2) / 2 | ||
center_y = (self.y1 + self.y2) / 2 | center_y = (self.y1 + self.y2) / 2 | ||
return (center_x, center_y) | return (center_x, center_y) | ||
def intersect(self, other): | def intersect(self, other): | ||
#returns true if this rectangle intersects with another one | #returns true if this rectangle intersects with another one | ||
return (self.x1 <= other.x2 and self.x2 >= other.x1 and | return (self.x1 <= other.x2 and self.x2 >= other.x1 and | ||
self.y1 <= other.y2 and self.y2 >= other.y1) | self.y1 <= other.y2 and self.y2 >= other.y1) | ||
class Object: | class Object: | ||
#this is a generic object: the player, a monster, an item, the stairs... | #this is a generic object: the player, a monster, an item, the stairs... | ||
Line 95: | Line 100: | ||
if self.fighter: #let the fighter component know who owns it | if self.fighter: #let the fighter component know who owns it | ||
self.fighter.owner = self | self.fighter.owner = self | ||
self.ai = ai | self.ai = ai | ||
if self.ai: #let the AI component know who owns it | if self.ai: #let the AI component know who owns it | ||
self.ai.owner = self | self.ai.owner = self | ||
self.item = item | self.item = item | ||
if self.item: #let the Item component know who owns it | if self.item: #let the Item component know who owns it | ||
self.item.owner = self | self.item.owner = self | ||
def move(self, dx, dy): | def move(self, dx, dy): | ||
#move by the given amount, if the destination is not blocked | #move by the given amount, if the destination is not blocked | ||
Line 109: | Line 114: | ||
self.x += dx | self.x += dx | ||
self.y += dy | self.y += dy | ||
def move_towards(self, target_x, target_y): | def move_towards(self, target_x, target_y): | ||
#vector from this object to the target, and distance | #vector from this object to the target, and distance | ||
Line 115: | Line 120: | ||
dy = target_y - self.y | dy = target_y - self.y | ||
distance = math.sqrt(dx ** 2 + dy ** 2) | distance = math.sqrt(dx ** 2 + dy ** 2) | ||
#normalize it to length 1 (preserving direction), then round it and | #normalize it to length 1 (preserving direction), then round it and | ||
#convert to integer so the movement is restricted to the map grid | #convert to integer so the movement is restricted to the map grid | ||
Line 121: | Line 126: | ||
dy = int(round(dy / distance)) | dy = int(round(dy / distance)) | ||
self.move(dx, dy) | self.move(dx, dy) | ||
def distance_to(self, other): | def distance_to(self, other): | ||
#return the distance to another object | #return the distance to another object | ||
Line 127: | Line 132: | ||
dy = other.y - self.y | dy = other.y - self.y | ||
return math.sqrt(dx ** 2 + dy ** 2) | return math.sqrt(dx ** 2 + dy ** 2) | ||
def send_to_back(self): | def send_to_back(self): | ||
#make this object be drawn first, so all others appear above it if they're in the same tile. | #make this object be drawn first, so all others appear above it if they're in the same tile. | ||
Line 133: | Line 138: | ||
objects.remove(self) | objects.remove(self) | ||
objects.insert(0, self) | objects.insert(0, self) | ||
def draw(self): | def draw(self): | ||
#only show if it's visible to the player | #only show if it's visible to the player | ||
if libtcod.map_is_in_fov(fov_map, self.x, self.y): | 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 | #set the color and then draw the character that represents this object at its position | ||
libtcod. | libtcod.console_set_default_foreground(con, self.color) | ||
libtcod.console_put_char(con, self.x, self.y, self.char, libtcod.BKGND_NONE) | libtcod.console_put_char(con, self.x, self.y, self.char, libtcod.BKGND_NONE) | ||
def clear(self): | def clear(self): | ||
#erase the character that represents this object | #erase the character that represents this object | ||
libtcod.console_put_char(con, self.x, self.y, ' ', libtcod.BKGND_NONE) | libtcod.console_put_char(con, self.x, self.y, ' ', libtcod.BKGND_NONE) | ||
class Fighter: | class Fighter: | ||
#combat-related properties and methods (monster, player, NPC). | #combat-related properties and methods (monster, player, NPC). | ||
Line 154: | Line 159: | ||
self.power = power | self.power = power | ||
self.death_function = death_function | self.death_function = death_function | ||
def attack(self, target): | def attack(self, target): | ||
#a simple formula for attack damage | #a simple formula for attack damage | ||
damage = self.power - target.fighter.defense | damage = self.power - target.fighter.defense | ||
if damage > 0: | if damage > 0: | ||
#make the target take some damage | #make the target take some damage | ||
Line 165: | Line 170: | ||
else: | else: | ||
message(self.owner.name.capitalize() + ' attacks ' + target.name + ' but it has no effect!') | message(self.owner.name.capitalize() + ' attacks ' + target.name + ' but it has no effect!') | ||
def take_damage(self, damage): | def take_damage(self, damage): | ||
#apply damage if possible | #apply damage if possible | ||
if damage > 0: | if damage > 0: | ||
self.hp -= damage | self.hp -= damage | ||
#check for death. if there's a death function, call it | #check for death. if there's a death function, call it | ||
if self.hp <= 0: | if self.hp <= 0: | ||
Line 176: | Line 181: | ||
if function is not None: | if function is not None: | ||
function(self.owner) | function(self.owner) | ||
def heal(self, amount): | def heal(self, amount): | ||
#heal by the given amount, without going over the maximum | #heal by the given amount, without going over the maximum | ||
Line 189: | Line 194: | ||
monster = self.owner | monster = self.owner | ||
if libtcod.map_is_in_fov(fov_map, monster.x, monster.y): | if libtcod.map_is_in_fov(fov_map, monster.x, monster.y): | ||
#move towards player if far away | #move towards player if far away | ||
if monster.distance_to(player) >= 2: | if monster.distance_to(player) >= 2: | ||
monster.move_towards(player.x, player.y) | monster.move_towards(player.x, player.y) | ||
#close enough, attack! (if the player is still alive.) | #close enough, attack! (if the player is still alive.) | ||
elif player.fighter.hp > 0: | elif player.fighter.hp > 0: | ||
Line 203: | Line 208: | ||
def __init__(self, use_function=None): | def __init__(self, use_function=None): | ||
self.use_function = use_function | self.use_function = use_function | ||
def pick_up(self): | def pick_up(self): | ||
#add to the player's inventory and remove from the map | #add to the player's inventory and remove from the map | ||
Line 212: | Line 217: | ||
objects.remove(self.owner) | objects.remove(self.owner) | ||
message('You picked up a ' + self.owner.name + '!', libtcod.green) | message('You picked up a ' + self.owner.name + '!', libtcod.green) | ||
def use(self): | def use(self): | ||
#just call the "use_function" if it is defined | #just call the "use_function" if it is defined | ||
Line 220: | Line 225: | ||
if self.use_function() != 'cancelled': | if self.use_function() != 'cancelled': | ||
inventory.remove(self.owner) #destroy after use, unless it was cancelled for some reason | inventory.remove(self.owner) #destroy after use, unless it was cancelled for some reason | ||
def is_blocked(x, y): | def is_blocked(x, y): | ||
#first test the map tile | #first test the map tile | ||
if map[x][y].blocked: | if map[x][y].blocked: | ||
return True | return True | ||
#now check for any blocking objects | #now check for any blocking objects | ||
for object in objects: | for object in objects: | ||
if object.blocks and object.x == x and object.y == y: | if object.blocks and object.x == x and object.y == y: | ||
return True | return True | ||
return False | return False | ||
def create_room(room): | def create_room(room): | ||
global map | global map | ||
Line 240: | Line 245: | ||
map[x][y].blocked = False | map[x][y].blocked = False | ||
map[x][y].block_sight = False | map[x][y].block_sight = False | ||
def create_h_tunnel(x1, x2, y): | def create_h_tunnel(x1, x2, y): | ||
global map | global map | ||
Line 247: | Line 252: | ||
map[x][y].blocked = False | map[x][y].blocked = False | ||
map[x][y].block_sight = False | map[x][y].block_sight = False | ||
def create_v_tunnel(y1, y2, x): | def create_v_tunnel(y1, y2, x): | ||
global map | global map | ||
Line 254: | Line 259: | ||
map[x][y].blocked = False | map[x][y].blocked = False | ||
map[x][y].block_sight = False | map[x][y].block_sight = False | ||
def make_map(): | def make_map(): | ||
global map, player | global map, player | ||
#fill map with "blocked" tiles | #fill map with "blocked" tiles | ||
map = [[ Tile(True) | map = [[ Tile(True) | ||
for y in range(MAP_HEIGHT) ] | for y in range(MAP_HEIGHT) ] | ||
for x in range(MAP_WIDTH) ] | for x in range(MAP_WIDTH) ] | ||
rooms = [] | rooms = [] | ||
num_rooms = 0 | num_rooms = 0 | ||
for r in range(MAX_ROOMS): | for r in range(MAX_ROOMS): | ||
#random width and height | #random width and height | ||
Line 273: | Line 278: | ||
x = libtcod.random_get_int(0, 0, MAP_WIDTH - w - 1) | x = libtcod.random_get_int(0, 0, MAP_WIDTH - w - 1) | ||
y = libtcod.random_get_int(0, 0, MAP_HEIGHT - h - 1) | y = libtcod.random_get_int(0, 0, MAP_HEIGHT - h - 1) | ||
#"Rect" class makes rectangles easier to work with | #"Rect" class makes rectangles easier to work with | ||
new_room = Rect(x, y, w, h) | new_room = Rect(x, y, w, h) | ||
#run through the other rooms and see if they intersect with this one | #run through the other rooms and see if they intersect with this one | ||
failed = False | failed = False | ||
Line 283: | Line 288: | ||
failed = True | failed = True | ||
break | break | ||
if not failed: | if not failed: | ||
#this means there are no intersections, so this room is valid | #this means there are no intersections, so this room is valid | ||
#"paint" it to the map's tiles | #"paint" it to the map's tiles | ||
create_room(new_room) | create_room(new_room) | ||
#center coordinates of new room, will be useful later | #center coordinates of new room, will be useful later | ||
(new_x, new_y) = new_room.center() | (new_x, new_y) = new_room.center() | ||
if num_rooms == 0: | if num_rooms == 0: | ||
#this is the first room, where the player starts at | #this is the first room, where the player starts at | ||
Line 303: | Line 305: | ||
#all rooms after the first: | #all rooms after the first: | ||
#connect it to the previous room with a tunnel | #connect it to the previous room with a tunnel | ||
#center coordinates of previous room | #center coordinates of previous room | ||
(prev_x, prev_y) = rooms[num_rooms-1].center() | (prev_x, prev_y) = rooms[num_rooms-1].center() | ||
#draw a coin (random number that is either 0 or 1) | #draw a coin (random number that is either 0 or 1) | ||
if libtcod.random_get_int(0, 0, 1) == 1: | if libtcod.random_get_int(0, 0, 1) == 1: | ||
Line 316: | Line 318: | ||
create_v_tunnel(prev_y, new_y, prev_x) | create_v_tunnel(prev_y, new_y, prev_x) | ||
create_h_tunnel(prev_x, new_x, new_y) | create_h_tunnel(prev_x, new_x, new_y) | ||
#add some contents to this room, such as monsters | |||
place_objects(new_room) | |||
#finally, append the new room to the list | #finally, append the new room to the list | ||
rooms.append(new_room) | rooms.append(new_room) | ||
num_rooms += 1 | num_rooms += 1 | ||
def place_objects(room): | def place_objects(room): | ||
#choose random number of monsters | #choose random number of monsters | ||
num_monsters = libtcod.random_get_int(0, 0, MAX_ROOM_MONSTERS) | num_monsters = libtcod.random_get_int(0, 0, MAX_ROOM_MONSTERS) | ||
for i in range(num_monsters): | for i in range(num_monsters): | ||
#choose random spot for this monster | #choose random spot for this monster | ||
x = libtcod.random_get_int(0, room.x1+1, room.x2-1) | x = libtcod.random_get_int(0, room.x1+1, room.x2-1) | ||
y = libtcod.random_get_int(0, room.y1+1, room.y2-1) | y = libtcod.random_get_int(0, room.y1+1, room.y2-1) | ||
#only place it if the tile is not blocked | #only place it if the tile is not blocked | ||
if not is_blocked(x, y): | if not is_blocked(x, y): | ||
Line 337: | Line 342: | ||
fighter_component = Fighter(hp=10, defense=0, power=3, death_function=monster_death) | fighter_component = Fighter(hp=10, defense=0, power=3, death_function=monster_death) | ||
ai_component = BasicMonster() | ai_component = BasicMonster() | ||
monster = Object(x, y, 'o', 'orc', libtcod.desaturated_green, | monster = Object(x, y, 'o', 'orc', libtcod.desaturated_green, | ||
blocks=True, fighter=fighter_component, ai=ai_component) | blocks=True, fighter=fighter_component, ai=ai_component) | ||
Line 344: | Line 349: | ||
fighter_component = Fighter(hp=16, defense=1, power=4, death_function=monster_death) | fighter_component = Fighter(hp=16, defense=1, power=4, death_function=monster_death) | ||
ai_component = BasicMonster() | ai_component = BasicMonster() | ||
monster = Object(x, y, 'T', 'troll', libtcod.darker_green, | monster = Object(x, y, 'T', 'troll', libtcod.darker_green, | ||
blocks=True, fighter=fighter_component, ai=ai_component) | blocks=True, fighter=fighter_component, ai=ai_component) | ||
objects.append(monster) | objects.append(monster) | ||
#choose random number of items | #choose random number of items | ||
num_items = libtcod.random_get_int(0, 0, MAX_ROOM_ITEMS) | num_items = libtcod.random_get_int(0, 0, MAX_ROOM_ITEMS) | ||
for i in range(num_items): | for i in range(num_items): | ||
#choose random spot for this item | #choose random spot for this item | ||
x = libtcod.random_get_int(0, room.x1+1, room.x2-1) | x = libtcod.random_get_int(0, room.x1+1, room.x2-1) | ||
y = libtcod.random_get_int(0, room.y1+1, room.y2-1) | y = libtcod.random_get_int(0, room.y1+1, room.y2-1) | ||
#only place it if the tile is not blocked | #only place it if the tile is not blocked | ||
if not is_blocked(x, y): | if not is_blocked(x, y): | ||
#create a healing potion | #create a healing potion | ||
item_component = Item(use_function=cast_heal) | item_component = Item(use_function=cast_heal) | ||
item = Object(x, y, '!', 'healing potion', libtcod.violet, item=item_component) | item = Object(x, y, '!', 'healing potion', libtcod.violet, item=item_component) | ||
objects.append(item) | objects.append(item) | ||
item.send_to_back() #items appear below other objects | item.send_to_back() #items appear below other objects | ||
Line 372: | Line 377: | ||
#render a bar (HP, experience, etc). first calculate the width of the bar | #render a bar (HP, experience, etc). first calculate the width of the bar | ||
bar_width = int(float(value) / maximum * total_width) | bar_width = int(float(value) / maximum * total_width) | ||
#render the background first | #render the background first | ||
libtcod. | libtcod.console_set_default_background(panel, back_color) | ||
libtcod.console_rect(panel, x, y, total_width, 1, False) | libtcod.console_rect(panel, x, y, total_width, 1, False, libtcod.BKGND_SCREEN) | ||
#now render the bar on top | #now render the bar on top | ||
libtcod. | libtcod.console_set_default_background(panel, bar_color) | ||
if bar_width > 0: | if bar_width > 0: | ||
libtcod.console_rect(panel, x, y, bar_width, 1, False) | libtcod.console_rect(panel, x, y, bar_width, 1, False, libtcod.BKGND_SCREEN) | ||
#finally, some centered text with the values | #finally, some centered text with the values | ||
libtcod. | libtcod.console_set_default_foreground(panel, libtcod.white) | ||
libtcod. | libtcod.console_print_ex(panel, x + total_width / 2, y, libtcod.BKGND_NONE, libtcod.CENTER, | ||
name + ': ' + str(value) + '/' + str(maximum)) | name + ': ' + str(value) + '/' + str(maximum)) | ||
def get_names_under_mouse(): | def get_names_under_mouse(): | ||
global mouse | |||
#return a string with the names of all objects under the mouse | #return a string with the names of all objects under the mouse | ||
(x, y) = (mouse.cx, mouse.cy) | (x, y) = (mouse.cx, mouse.cy) | ||
#create a list with the names of all objects at the mouse's coordinates and in FOV | #create a list with the names of all objects at the mouse's coordinates and in FOV | ||
names = [obj.name for obj in objects | 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)] | 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 | names = ', '.join(names) #join the names, separated by commas | ||
return names.capitalize() | return names.capitalize() | ||
def render_all(): | def render_all(): | ||
global fov_map, color_dark_wall, color_light_wall | global fov_map, color_dark_wall, color_light_wall | ||
global color_dark_ground, color_light_ground | global color_dark_ground, color_light_ground | ||
global fov_recompute | global fov_recompute | ||
if fov_recompute: | if fov_recompute: | ||
#recompute FOV if needed (the player moved or something) | #recompute FOV if needed (the player moved or something) | ||
fov_recompute = False | fov_recompute = False | ||
libtcod.map_compute_fov(fov_map, player.x, player.y, TORCH_RADIUS, FOV_LIGHT_WALLS, FOV_ALGO) | 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 | #go through all tiles, and set their background color according to the FOV | ||
for y in range(MAP_HEIGHT): | for y in range(MAP_HEIGHT): | ||
Line 418: | Line 424: | ||
if map[x][y].explored: | if map[x][y].explored: | ||
if wall: | if wall: | ||
libtcod. | libtcod.console_set_char_background(con, x, y, color_dark_wall, libtcod.BKGND_SET) | ||
else: | else: | ||
libtcod. | libtcod.console_set_char_background(con, x, y, color_dark_ground, libtcod.BKGND_SET) | ||
else: | else: | ||
#it's visible | #it's visible | ||
if wall: | if wall: | ||
libtcod. | libtcod.console_set_char_background(con, x, y, color_light_wall, libtcod.BKGND_SET ) | ||
else: | else: | ||
libtcod. | libtcod.console_set_char_background(con, x, y, color_light_ground, libtcod.BKGND_SET ) | ||
#since it's visible, explore it | #since it's visible, explore it | ||
map[x][y].explored = True | map[x][y].explored = True | ||
#draw all objects in the list, except the player. we want it to | #draw all objects in the list, except the player. we want it to | ||
#always appear over all other objects! so it's drawn later. | #always appear over all other objects! so it's drawn later. | ||
Line 436: | Line 442: | ||
object.draw() | object.draw() | ||
player.draw() | player.draw() | ||
#blit the contents of "con" to the root console | #blit the contents of "con" to the root console | ||
libtcod.console_blit(con, 0, 0, MAP_WIDTH, MAP_HEIGHT, 0, 0, 0) | libtcod.console_blit(con, 0, 0, MAP_WIDTH, MAP_HEIGHT, 0, 0, 0) | ||
#prepare to render the GUI panel | #prepare to render the GUI panel | ||
libtcod. | libtcod.console_set_default_background(panel, libtcod.black) | ||
libtcod.console_clear(panel) | libtcod.console_clear(panel) | ||
#print the game messages, one line at a time | #print the game messages, one line at a time | ||
y = 1 | y = 1 | ||
for (line, color) in game_msgs: | for (line, color) in game_msgs: | ||
libtcod. | libtcod.console_set_default_foreground(panel, color) | ||
libtcod. | libtcod.console_print_ex(panel, MSG_X, y, libtcod.BKGND_NONE, libtcod.LEFT, line) | ||
y += 1 | y += 1 | ||
#show the player's stats | #show the player's stats | ||
render_bar(1, 1, BAR_WIDTH, 'HP', player.fighter.hp, player.fighter.max_hp, | render_bar(1, 1, BAR_WIDTH, 'HP', player.fighter.hp, player.fighter.max_hp, | ||
libtcod.light_red, libtcod.darker_red) | libtcod.light_red, libtcod.darker_red) | ||
#display names of objects under the mouse | #display names of objects under the mouse | ||
libtcod. | libtcod.console_set_default_foreground(panel, libtcod.light_gray) | ||
libtcod. | 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 | #blit the contents of "panel" to the root console | ||
libtcod.console_blit(panel, 0, 0, SCREEN_WIDTH, PANEL_HEIGHT, 0, 0, PANEL_Y) | libtcod.console_blit(panel, 0, 0, SCREEN_WIDTH, PANEL_HEIGHT, 0, 0, PANEL_Y) | ||
def message(new_msg, color = libtcod.white): | def message(new_msg, color = libtcod.white): | ||
#split the message if necessary, among multiple lines | #split the message if necessary, among multiple lines | ||
new_msg_lines = textwrap.wrap(new_msg, MSG_WIDTH) | new_msg_lines = textwrap.wrap(new_msg, MSG_WIDTH) | ||
for line in new_msg_lines: | for line in new_msg_lines: | ||
#if the buffer is full, remove the first line to make room for the new one | #if the buffer is full, remove the first line to make room for the new one | ||
if len(game_msgs) == MSG_HEIGHT: | if len(game_msgs) == MSG_HEIGHT: | ||
del game_msgs[0] | del game_msgs[0] | ||
#add the new line as a tuple, with the text and the color | #add the new line as a tuple, with the text and the color | ||
game_msgs.append( (line, color) ) | game_msgs.append( (line, color) ) | ||
def player_move_or_attack(dx, dy): | def player_move_or_attack(dx, dy): | ||
global fov_recompute | global fov_recompute | ||
#the coordinates the player is moving to/attacking | #the coordinates the player is moving to/attacking | ||
x = player.x + dx | x = player.x + dx | ||
y = player.y + dy | y = player.y + dy | ||
#try to find an attackable object there | #try to find an attackable object there | ||
target = None | target = None | ||
Line 490: | Line 496: | ||
target = object | target = object | ||
break | break | ||
#attack if target found, move otherwise | #attack if target found, move otherwise | ||
if target is not None: | if target is not None: | ||
Line 497: | Line 503: | ||
player.move(dx, dy) | player.move(dx, dy) | ||
fov_recompute = True | fov_recompute = True | ||
def menu(header, options, width): | def menu(header, options, width): | ||
if len(options) > 26: raise ValueError('Cannot have a menu with more than 26 options.') | if len(options) > 26: raise ValueError('Cannot have a menu with more than 26 options.') | ||
#calculate total height for the header (after auto-wrap) and one line per option | #calculate total height for the header (after auto-wrap) and one line per option | ||
header_height = libtcod. | header_height = libtcod.console_get_height_rect(con, 0, 0, width, SCREEN_HEIGHT, header) | ||
height = len(options) + header_height | height = len(options) + header_height | ||
#create an off-screen console that represents the menu's window | #create an off-screen console that represents the menu's window | ||
window = libtcod.console_new(width, height) | window = libtcod.console_new(width, height) | ||
#print the header, with auto-wrap | #print the header, with auto-wrap | ||
libtcod. | libtcod.console_set_default_foreground(window, libtcod.white) | ||
libtcod. | libtcod.console_print_rect_ex(window, 0, 0, width, height, libtcod.BKGND_NONE, libtcod.LEFT, header) | ||
#print all the options | #print all the options | ||
y = header_height | y = header_height | ||
Line 518: | Line 524: | ||
for option_text in options: | for option_text in options: | ||
text = '(' + chr(letter_index) + ') ' + option_text | text = '(' + chr(letter_index) + ') ' + option_text | ||
libtcod. | libtcod.console_print_ex(window, 0, y, libtcod.BKGND_NONE, libtcod.LEFT, text) | ||
y += 1 | y += 1 | ||
letter_index += 1 | letter_index += 1 | ||
#blit the contents of "window" to the root console | #blit the contents of "window" to the root console | ||
x = SCREEN_WIDTH/2 - width/2 | x = SCREEN_WIDTH/2 - width/2 | ||
y = SCREEN_HEIGHT/2 - height/2 | y = SCREEN_HEIGHT/2 - height/2 | ||
libtcod.console_blit(window, 0, 0, width, height, 0, x, y, 1.0, 0.7) | libtcod.console_blit(window, 0, 0, width, height, 0, x, y, 1.0, 0.7) | ||
#present the root console to the player and wait for a key-press | #present the root console to the player and wait for a key-press | ||
libtcod.console_flush() | libtcod.console_flush() | ||
key = libtcod.console_wait_for_keypress(True) | key = libtcod.console_wait_for_keypress(True) | ||
#convert the ASCII code to an index; if it corresponds to an option, return it | #convert the ASCII code to an index; if it corresponds to an option, return it | ||
index = key.c - ord('a') | index = key.c - ord('a') | ||
if index >= 0 and index < len(options): return index | if index >= 0 and index < len(options): return index | ||
return None | return None | ||
def inventory_menu(header): | def inventory_menu(header): | ||
#show a menu with each item of the inventory as an option | #show a menu with each item of the inventory as an option | ||
Line 542: | Line 548: | ||
else: | else: | ||
options = [item.name for item in inventory] | options = [item.name for item in inventory] | ||
index = menu(header, options, INVENTORY_WIDTH) | index = menu(header, options, INVENTORY_WIDTH) | ||
#if an item was chosen, return it | #if an item was chosen, return it | ||
if index is None or len(inventory) == 0: return None | if index is None or len(inventory) == 0: return None | ||
return inventory[index].item | return inventory[index].item | ||
def handle_keys(): | def handle_keys(): | ||
key | global key; | ||
if key.vk == libtcod.KEY_ENTER and key.lalt: | if key.vk == libtcod.KEY_ENTER and key.lalt: | ||
#Alt+Enter: toggle fullscreen | #Alt+Enter: toggle fullscreen | ||
libtcod.console_set_fullscreen(not libtcod.console_is_fullscreen()) | libtcod.console_set_fullscreen(not libtcod.console_is_fullscreen()) | ||
elif key.vk == libtcod.KEY_ESCAPE: | elif key.vk == libtcod.KEY_ESCAPE: | ||
return 'exit' #exit game | return 'exit' #exit game | ||
if game_state == 'playing': | if game_state == 'playing': | ||
#movement keys | #movement keys | ||
if key.vk == libtcod.KEY_UP: | if key.vk == libtcod.KEY_UP: | ||
player_move_or_attack(0, -1) | player_move_or_attack(0, -1) | ||
elif key.vk == libtcod.KEY_DOWN: | elif key.vk == libtcod.KEY_DOWN: | ||
player_move_or_attack(0, 1) | player_move_or_attack(0, 1) | ||
elif key.vk == libtcod.KEY_LEFT: | elif key.vk == libtcod.KEY_LEFT: | ||
player_move_or_attack(-1, 0) | player_move_or_attack(-1, 0) | ||
elif key.vk == libtcod.KEY_RIGHT: | elif key.vk == libtcod.KEY_RIGHT: | ||
player_move_or_attack(1, 0) | player_move_or_attack(1, 0) | ||
Line 575: | Line 581: | ||
#test for other keys | #test for other keys | ||
key_char = chr(key.c) | key_char = chr(key.c) | ||
if key_char == 'g': | if key_char == 'g': | ||
#pick up an item | #pick up an item | ||
Line 582: | Line 588: | ||
object.item.pick_up() | object.item.pick_up() | ||
break | break | ||
if key_char == 'i': | if key_char == 'i': | ||
#show the inventory; if an item is selected, use it | #show the inventory; if an item is selected, use it | ||
Line 588: | Line 594: | ||
if chosen_item is not None: | if chosen_item is not None: | ||
chosen_item.use() | chosen_item.use() | ||
return 'didnt-take-turn' | return 'didnt-take-turn' | ||
def player_death(player): | def player_death(player): | ||
#the game ended! | #the game ended! | ||
Line 596: | Line 602: | ||
message('You died!', libtcod.red) | message('You died!', libtcod.red) | ||
game_state = 'dead' | game_state = 'dead' | ||
#for added effect, transform the player into a corpse! | #for added effect, transform the player into a corpse! | ||
player.char = '%' | player.char = '%' | ||
player.color = libtcod.dark_red | player.color = libtcod.dark_red | ||
def monster_death(monster): | def monster_death(monster): | ||
#transform it into a nasty corpse! it doesn't block, can't be | #transform it into a nasty corpse! it doesn't block, can't be | ||
Line 612: | Line 618: | ||
monster.name = 'remains of ' + monster.name | monster.name = 'remains of ' + monster.name | ||
monster.send_to_back() | monster.send_to_back() | ||
def cast_heal(): | def cast_heal(): | ||
#heal the player | #heal the player | ||
Line 618: | Line 624: | ||
message('You are already at full health.', libtcod.red) | message('You are already at full health.', libtcod.red) | ||
return 'cancelled' | return 'cancelled' | ||
message('Your wounds start to feel better!', libtcod.light_violet) | message('Your wounds start to feel better!', libtcod.light_violet) | ||
player.fighter.heal(HEAL_AMOUNT) | player.fighter.heal(HEAL_AMOUNT) | ||
############################################# | ############################################# | ||
# Initialization & Main Loop | # Initialization & Main Loop | ||
############################################# | ############################################# | ||
libtcod.console_set_custom_font('arial10x10.png', libtcod.FONT_TYPE_GREYSCALE | libtcod.FONT_LAYOUT_TCOD) | libtcod.console_set_custom_font('arial10x10.png', libtcod.FONT_TYPE_GREYSCALE | libtcod.FONT_LAYOUT_TCOD) | ||
libtcod.console_init_root(SCREEN_WIDTH, SCREEN_HEIGHT, 'python/libtcod tutorial', False) | libtcod.console_init_root(SCREEN_WIDTH, SCREEN_HEIGHT, 'python/libtcod tutorial', False) | ||
Line 632: | Line 637: | ||
con = libtcod.console_new(MAP_WIDTH, MAP_HEIGHT) | con = libtcod.console_new(MAP_WIDTH, MAP_HEIGHT) | ||
panel = libtcod.console_new(SCREEN_WIDTH, PANEL_HEIGHT) | panel = libtcod.console_new(SCREEN_WIDTH, PANEL_HEIGHT) | ||
#create object representing the player | #create object representing the player | ||
fighter_component = Fighter(hp=30, defense=2, power=5, death_function=player_death) | fighter_component = Fighter(hp=30, defense=2, power=5, death_function=player_death) | ||
player = Object(0, 0, '@', 'player', libtcod.white, blocks=True, fighter=fighter_component) | player = Object(0, 0, '@', 'player', libtcod.white, blocks=True, fighter=fighter_component) | ||
#the list of objects with just the player | #the list of objects with just the player | ||
objects = [player] | objects = [player] | ||
#generate map (at this point it's not drawn to the screen) | #generate map (at this point it's not drawn to the screen) | ||
make_map() | make_map() | ||
#create the FOV map, according to the generated map | #create the FOV map, according to the generated map | ||
fov_map = libtcod.map_new(MAP_WIDTH, MAP_HEIGHT) | fov_map = libtcod.map_new(MAP_WIDTH, MAP_HEIGHT) | ||
Line 648: | Line 653: | ||
for x in range(MAP_WIDTH): | 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) | libtcod.map_set_properties(fov_map, x, y, not map[x][y].block_sight, not map[x][y].blocked) | ||
fov_recompute = True | fov_recompute = True | ||
game_state = 'playing' | game_state = 'playing' | ||
player_action = None | player_action = None | ||
inventory = [] | inventory = [] | ||
#create the list of game messages and their colors, starts empty | #create the list of game messages and their colors, starts empty | ||
game_msgs = [] | game_msgs = [] | ||
#a warm welcoming message! | #a warm welcoming message! | ||
message('Welcome stranger! Prepare to perish in the Tombs of the Ancient Kings.', libtcod.red) | message('Welcome stranger! Prepare to perish in the Tombs of the Ancient Kings.', libtcod.red) | ||
mouse = libtcod.Mouse() | |||
key = libtcod.Key() | |||
while not libtcod.console_is_window_closed(): | while not libtcod.console_is_window_closed(): | ||
#render the screen | #render the screen | ||
libtcod.sys_check_for_event(libtcod.EVENT_KEY_PRESS|libtcod.EVENT_MOUSE,key,mouse) | |||
render_all() | render_all() | ||
libtcod.console_flush() | libtcod.console_flush() | ||
#erase all objects at their old locations, before they move | #erase all objects at their old locations, before they move | ||
for object in objects: | for object in objects: | ||
object.clear() | object.clear() | ||
#handle keys and exit game if needed | #handle keys and exit game if needed | ||
player_action = handle_keys() | player_action = handle_keys() | ||
if player_action == 'exit': | if player_action == 'exit': | ||
break | break | ||
#let monsters take their turn | #let monsters take their turn | ||
if game_state == 'playing' and player_action != 'didnt-take-turn': | if game_state == 'playing' and player_action != 'didnt-take-turn': | ||
Line 683: | Line 692: | ||
object.ai.take_turn() | object.ai.take_turn() | ||
</syntaxhighlight></div> | </syntaxhighlight></div> | ||
[[Category:Developing]] |
Latest revision as of 02:55, 23 September 2016
This is part of a series of tutorials; the main page can be found here. The tutorial uses libtcod version 1.6.0 and above. If you choose to use 1.5.1, you can find the old version here. |
Items and inventory
import libtcodpy as libtcod
import math
import textwrap
#actual size of the window
SCREEN_WIDTH = 80
SCREEN_HEIGHT = 50
#size of the map
MAP_WIDTH = 80
MAP_HEIGHT = 43
#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
INVENTORY_WIDTH = 50
#parameters for dungeon generator
ROOM_MAX_SIZE = 10
ROOM_MIN_SIZE = 6
MAX_ROOMS = 30
MAX_ROOM_MONSTERS = 3
MAX_ROOM_ITEMS = 2
#spell values
HEAL_AMOUNT = 4
FOV_ALGO = 0 #default FOV algorithm
FOV_LIGHT_WALLS = True #light walls or not
TORCH_RADIUS = 10
LIMIT_FPS = 20 #20 frames-per-second maximum
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:
#a tile of the map and its properties
def __init__(self, blocked, block_sight = None):
self.blocked = blocked
#all tiles start unexplored
self.explored = False
#by default, if a tile is blocked, it also blocks sight
if block_sight is None: block_sight = blocked
self.block_sight = block_sight
class Rect:
#a rectangle on the map. used to characterize 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:
#this is a generic object: the player, a monster, an item, the stairs...
#it's always represented by a character on screen.
def __init__(self, x, y, char, name, color, blocks=False, fighter=None, ai=None, item=None):
self.x = x
self.y = y
self.char = char
self.name = name
self.color = color
self.blocks = blocks
self.fighter = fighter
if self.fighter: #let the fighter component know who owns it
self.fighter.owner = self
self.ai = ai
if self.ai: #let the AI component know who owns it
self.ai.owner = self
self.item = item
if self.item: #let the Item component know who owns it
self.item.owner = self
def move(self, dx, dy):
#move by the given amount, if the destination is not blocked
if not is_blocked(self.x + dx, self.y + dy):
self.x += dx
self.y += dy
def move_towards(self, target_x, target_y):
#vector from this object to the target, and distance
dx = target_x - self.x
dy = target_y - self.y
distance = math.sqrt(dx ** 2 + dy ** 2)
#normalize it to length 1 (preserving direction), then round it and
#convert to integer so the movement is restricted to the map grid
dx = int(round(dx / distance))
dy = int(round(dy / distance))
self.move(dx, dy)
def distance_to(self, other):
#return the distance to another object
dx = other.x - self.x
dy = other.y - self.y
return math.sqrt(dx ** 2 + dy ** 2)
def send_to_back(self):
#make this object be drawn first, so all others appear above it if they're in the same tile.
global objects
objects.remove(self)
objects.insert(0, self)
def draw(self):
#only show if it's visible to the player
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):
#erase the character that represents this object
libtcod.console_put_char(con, self.x, self.y, ' ', libtcod.BKGND_NONE)
class Fighter:
#combat-related properties and methods (monster, player, NPC).
def __init__(self, hp, defense, power, death_function=None):
self.max_hp = hp
self.hp = hp
self.defense = defense
self.power = power
self.death_function = death_function
def attack(self, target):
#a simple formula for attack damage
damage = self.power - target.fighter.defense
if damage > 0:
#make the target take some damage
message(self.owner.name.capitalize() + ' attacks ' + target.name + ' for ' + str(damage) + ' hit points.')
target.fighter.take_damage(damage)
else:
message(self.owner.name.capitalize() + ' attacks ' + target.name + ' but it has no effect!')
def take_damage(self, damage):
#apply damage if possible
if damage > 0:
self.hp -= damage
#check for death. if there's a death function, call it
if self.hp <= 0:
function = self.death_function
if function is not None:
function(self.owner)
def heal(self, amount):
#heal by the given amount, without going over the maximum
self.hp += amount
if self.hp > self.max_hp:
self.hp = self.max_hp
class BasicMonster:
#AI for a basic monster.
def take_turn(self):
#a basic monster takes its turn. if you can see it, it can see you
monster = self.owner
if libtcod.map_is_in_fov(fov_map, monster.x, monster.y):
#move towards player if far away
if monster.distance_to(player) >= 2:
monster.move_towards(player.x, player.y)
#close enough, attack! (if the player is still alive.)
elif player.fighter.hp > 0:
monster.fighter.attack(player)
class Item:
#an item that can be picked up and used.
def __init__(self, use_function=None):
self.use_function = use_function
def pick_up(self):
#add to the player's inventory and remove from the map
if len(inventory) >= 26:
message('Your inventory is full, cannot pick up ' + self.owner.name + '.', libtcod.red)
else:
inventory.append(self.owner)
objects.remove(self.owner)
message('You picked up a ' + self.owner.name + '!', libtcod.green)
def use(self):
#just call the "use_function" if it is defined
if self.use_function is None:
message('The ' + self.owner.name + ' cannot be used.')
else:
if self.use_function() != 'cancelled':
inventory.remove(self.owner) #destroy after use, unless it was cancelled for some reason
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
#horizontal tunnel. min() and max() are used in case x1>x2
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, player
#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)
#center coordinates of new room, will be useful later
(new_x, new_y) = new_room.center()
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)
#add some contents to this room, such as monsters
place_objects(new_room)
#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+1, room.x2-1)
y = libtcod.random_get_int(0, room.y1+1, room.y2-1)
#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
fighter_component = Fighter(hp=10, defense=0, power=3, death_function=monster_death)
ai_component = BasicMonster()
monster = Object(x, y, 'o', 'orc', libtcod.desaturated_green,
blocks=True, fighter=fighter_component, ai=ai_component)
else:
#create a troll
fighter_component = Fighter(hp=16, defense=1, power=4, death_function=monster_death)
ai_component = BasicMonster()
monster = Object(x, y, 'T', 'troll', libtcod.darker_green,
blocks=True, fighter=fighter_component, ai=ai_component)
objects.append(monster)
#choose random number of items
num_items = libtcod.random_get_int(0, 0, MAX_ROOM_ITEMS)
for i in range(num_items):
#choose random spot for this item
x = libtcod.random_get_int(0, room.x1+1, room.x2-1)
y = libtcod.random_get_int(0, room.y1+1, room.y2-1)
#only place it if the tile is not blocked
if not is_blocked(x, y):
#create a healing potion
item_component = Item(use_function=cast_heal)
item = Object(x, y, '!', 'healing potion', libtcod.violet, item=item_component)
objects.append(item)
item.send_to_back() #items appear below other objects
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 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, except the player. we want it to
#always appear over all other objects! so it's drawn later.
for object in objects:
if object != player:
object.draw()
player.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', player.fighter.hp, player.fighter.max_hp,
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 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.fighter and object.x == x and object.y == y:
target = object
break
#attack if target found, move otherwise
if target is not None:
player.fighter.attack(target)
else:
player.move(dx, dy)
fov_recompute = True
def menu(header, options, width):
if len(options) > 26: raise ValueError('Cannot have a menu with more than 26 options.')
#calculate total height for the header (after auto-wrap) and one line per option
header_height = libtcod.console_get_height_rect(con, 0, 0, width, SCREEN_HEIGHT, header)
height = len(options) + header_height
#create an off-screen console that represents the menu's window
window = libtcod.console_new(width, height)
#print the header, with auto-wrap
libtcod.console_set_default_foreground(window, libtcod.white)
libtcod.console_print_rect_ex(window, 0, 0, width, height, libtcod.BKGND_NONE, libtcod.LEFT, header)
#print all the options
y = header_height
letter_index = ord('a')
for option_text in options:
text = '(' + chr(letter_index) + ') ' + option_text
libtcod.console_print_ex(window, 0, y, libtcod.BKGND_NONE, libtcod.LEFT, text)
y += 1
letter_index += 1
#blit the contents of "window" to the root console
x = SCREEN_WIDTH/2 - width/2
y = SCREEN_HEIGHT/2 - height/2
libtcod.console_blit(window, 0, 0, width, height, 0, x, y, 1.0, 0.7)
#present the root console to the player and wait for a key-press
libtcod.console_flush()
key = libtcod.console_wait_for_keypress(True)
#convert the ASCII code to an index; if it corresponds to an option, return it
index = key.c - ord('a')
if index >= 0 and index < len(options): return index
return None
def inventory_menu(header):
#show a menu with each item of the inventory as an option
if len(inventory) == 0:
options = ['Inventory is empty.']
else:
options = [item.name for item in inventory]
index = menu(header, options, INVENTORY_WIDTH)
#if an item was chosen, return it
if index is None or len(inventory) == 0: return None
return inventory[index].item
def handle_keys():
global key;
if key.vk == libtcod.KEY_ENTER and key.lalt:
#Alt+Enter: toggle fullscreen
libtcod.console_set_fullscreen(not libtcod.console_is_fullscreen())
elif key.vk == libtcod.KEY_ESCAPE:
return 'exit' #exit game
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:
#test for other keys
key_char = chr(key.c)
if key_char == 'g':
#pick up an item
for object in objects: #look for an item in the player's tile
if object.x == player.x and object.y == player.y and object.item:
object.item.pick_up()
break
if key_char == 'i':
#show the inventory; if an item is selected, use it
chosen_item = inventory_menu('Press the key next to an item to use it, or any other to cancel.\n')
if chosen_item is not None:
chosen_item.use()
return 'didnt-take-turn'
def player_death(player):
#the game ended!
global game_state
message('You died!', libtcod.red)
game_state = 'dead'
#for added effect, transform the player into a corpse!
player.char = '%'
player.color = libtcod.dark_red
def monster_death(monster):
#transform it into a nasty corpse! it doesn't block, can't be
#attacked and doesn't move
message(monster.name.capitalize() + ' is dead!', libtcod.orange)
monster.char = '%'
monster.color = libtcod.dark_red
monster.blocks = False
monster.fighter = None
monster.ai = None
monster.name = 'remains of ' + monster.name
monster.send_to_back()
def cast_heal():
#heal the player
if player.fighter.hp == player.fighter.max_hp:
message('You are already at full health.', libtcod.red)
return 'cancelled'
message('Your wounds start to feel better!', libtcod.light_violet)
player.fighter.heal(HEAL_AMOUNT)
#############################################
# Initialization & Main Loop
#############################################
libtcod.console_set_custom_font('arial10x10.png', libtcod.FONT_TYPE_GREYSCALE | libtcod.FONT_LAYOUT_TCOD)
libtcod.console_init_root(SCREEN_WIDTH, SCREEN_HEIGHT, 'python/libtcod tutorial', False)
libtcod.sys_set_fps(LIMIT_FPS)
con = libtcod.console_new(MAP_WIDTH, MAP_HEIGHT)
panel = libtcod.console_new(SCREEN_WIDTH, PANEL_HEIGHT)
#create object representing the player
fighter_component = Fighter(hp=30, defense=2, power=5, death_function=player_death)
player = Object(0, 0, '@', 'player', libtcod.white, blocks=True, fighter=fighter_component)
#the list of objects with just the player
objects = [player]
#generate map (at this point it's not drawn to the screen)
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
inventory = []
#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()
while not libtcod.console_is_window_closed():
#render the screen
libtcod.sys_check_for_event(libtcod.EVENT_KEY_PRESS|libtcod.EVENT_MOUSE,key,mouse)
render_all()
libtcod.console_flush()
#erase all objects at their old locations, before they move
for object in objects:
object.clear()
#handle keys and exit game if needed
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.ai:
object.ai.take_turn()