def get_control_points(interval):
"""
Returns all 4 control points of a bezier interval
Args:
interval (dict) : Holds one interval of the bezier curve that is two waypoints
Returns:
(misc.Vector, misc.Vector, misc.Vector, misc.Vector) If the interval holds position bezier
(float, float, float, float) Else : the interval holds value bezier
"""
# If the interval is for position or vector
if "to" in interval.keys():
st = Vector(interval["s"][0], interval["s"][1])
en = Vector(interval["e"][0], interval["e"][1])
to = Vector(interval["synfig_to"][0], interval["synfig_to"][1])
ti = Vector(interval["synfig_ti"][0], interval["synfig_ti"][1])
# If the interval is for real values
else:
st = interval["s"][0]
en = interval["e"][0]
to = interval["synfig_o"][0]
ti = interval["synfig_i"][0]
return st, to, ti, en
def handle_color():
"""
Default linear tangent values for color interpolations
Args:
(None)
Returns:
(misc.Vector, misc.Vector) : out and in tangents for color parameter
"""
out_val = Vector(0.5, 0.5, "color")
in_val = Vector(0.5, 0.5, "color")
return out_val, in_val
def game_map(player, orc, air, candy):
"""Create a level and place the other objects in it."""
from misc import Vector
from dungeon import Dungeon
from registry import Registry
registry = Registry()
dungeon = Dungeon()
dungeon.initialize(player, registry)
level = dungeon.current_level
# Place player and orc in this level
player.place(level, Vector(0, 0))
orc.place(level, Vector(5, 5))
candy.place(level, Vector(1, 0))
air.place(level, Vector(0, 1))
return level
def _init_room(self, room):
"""Make the tiles in the map that correspond to the room walkable."""
for x in range(room.x1 + 1, room.x2):
for y in range(room.y1 + 1, room.y2):
pos = Vector(x, y)
self.walkable[pos] = True
self.transparent[pos] = True
def compute_path(self, pos1, pos2):
"""
Calculate a path between pos1 and pos2 in the game map.
Args:
pos1 (Vector): Vector representing the starting point.
pos2 (Vector): Vector representing the destination.
Returns:
list(Vector): A list of vectors, where each vector represents the position of the next tile in the path.
The list goes up to the pos2.
"""
# Get current walkable state
pos1_walkable = self.walkable[pos1]
pos2_walkable = self.walkable[pos2]
# Set origin and destination to walkable for the actual computation to work
self.walkable[pos1] = self.walkable[pos2] = True
# Compute path
path = self._map.compute_path(pos1.x, pos1.y, pos2.x, pos2.y)
# Convert path to vectors
path = [Vector(x, y) for x, y in [tile for tile in path]]
# Revert origin and destination walkable state to its original state
self.walkable[pos1] = pos1_walkable
self.walkable[pos2] = pos2_walkable
return path
def clamped_vector(p1, p2, p3, animated, i, lottie, ease):
"""
Function to generate the collective tangents i.e. x tangent and y tangent
when clamped waypoints are used
Args:
p1 (misc.Vector) : First point in Co-ordinate System
p2 (misc.Vector) : Second point in Co-ordinate System
p3 (misc.Vector) : Third point in Co-ordinate System
animated (lxml.etree._Element) : Synfig format animation
i (int) : Iterator over animation
ease (str) : Specifies if it is an ease in animation ease out
Returns:
(misc.Vector) : Clamped Vector is returned
"""
x_tan = clamped_tangent(p1.val1, p2.val1, p3.val1, animated, i)
y_tan = clamped_tangent(p1.val2, p2.val2, p3.val2, animated, i)
if isclose(x_tan, 0.0) or isclose(y_tan, 0.0):
if ease == "in":
ease_in(lottie)
else:
ease_out(lottie)
return Vector(x_tan, y_tan, animated.attrib["type"])
def handle_key_input(cls):
"""
Use tdl's user input features to react to keyborad input.
Returns:
True if an action that consumes a turn was performed by the player, False otherwise.
"""
# TODO: Have key mapping in config file and use enums (or something similar) instead
if not cls.user_input:
return False
key_char = cls.user_input.char
move_direction = None
# Vertical and horizontal movement
if cls.user_input.key == 'UP' or key_char == 'k':
move_direction = Vector(0, -1)
elif cls.user_input.key == 'DOWN' or key_char == 'j':
move_direction = Vector(0, 1)
elif cls.user_input.key == 'LEFT' or key_char == 'h':
move_direction = Vector(-1, 0)
elif cls.user_input.key == 'RIGHT' or key_char == 'l':
move_direction = Vector(1, 0)
# Diagonal movement
elif key_char == 'y':
move_direction = Vector(-1, -1)
elif key_char == 'u':
move_direction = Vector(1, -1)
elif key_char == 'b':
move_direction = Vector(-1, 1)
elif key_char == 'n':
move_direction = Vector(1, 1)
# Check if the action is a movement action
if move_direction is not None:
return cls.movement_action(move_direction)
if cls.user_input.key == 'ENTER' and cls.user_input.alt:
# Alt+Enter: toggle fullscreen
tdl.set_fullscreen(not tdl.get_fullscreen())
return False
elif cls.user_input.key == 'ESCAPE':
# Exit game
# TODO: Find more elegant way to terminate the program
exit()
elif cls.user_input.char == 'g':
return cls.pickup_action()
elif cls.user_input.char == 'e':
return cls.interact_action()
else:
return False
def center(self):
"""
Get the center of this room object as a Vector.
Returns:
Vector: The center of this room object.
"""
center_x = int((self.x1 + self.x2) / 2)
center_y = int((self.y1 + self.y2) / 2)
return Vector(center_x, center_y)
def generate(self):
"""
Generate the level's layout.
"""
# Initialize map
for x in range(self.width):
for y in range(self.height):
pos = Vector(x, y)
self.walkable[pos] = False
self.transparent[pos] = False
for r in range(self.room_max_count):
# Random width and height
w = randint(self.room_min_size, self.room_max_size)
h = randint(self.room_min_size, self.room_max_size)
# Random position without going out of the boundaries of the map
x = randint(0, self.width - w - 1)
y = randint(0, self.height - h - 1)
new_room = Room(x, y, w, h)
# If it intersects with an existent room, start over
for room in self.rooms:
if new_room.intersect(room):
break
else:
# Room is valid
self._init_room(new_room)
center = new_room.center()
if not self.rooms:
# First room, place up stairs
self.up_stairs.place(self, center)
else:
# Connect room to previous room
previous = self.rooms[-1].center()
# Flip a coin
if randint(0, 1) == 1:
# First move horizontally, then vertically
self._create_h_tunnel(previous.x, center.x, previous.y)
self._create_v_tunnel(previous.y, center.y, center.x)
else:
# First move vertically, then horizontally
self._create_v_tunnel(previous.y, center.y, previous.x)
self._create_h_tunnel(previous.x, center.x, center.y)
self.rooms.append(new_room)
# Place down stairs
random_room = choice(self.rooms)
self.place_entity_randomly(self.down_stairs, random_room)
def _render_map(cls):
"""
Renders the current game map if necessary.
"""
cur_map = cls.dungeon.current_level
if cls.dungeon.fov_recomputed:
cls.dungeon.fov_recomputed = False
# First clear the old console before re-draw
cls.console.clear(fg=Colors.WHITE, bg=Colors.BLACK)
for x in range(cur_map.width):
for y in range(cur_map.height):
pos = Vector(x, y)
wall = not cur_map.transparent[pos]
# If position is visible, draw a bright tile
if cur_map.fov[pos]:
if wall:
cls.console.draw_char(x,
y,
None,
fg=None,
bg=Colors.WALL_VISIBLE)
else:
cls.console.draw_char(x,
y,
None,
fg=None,
bg=Colors.GROUND_VISIBLE)
# Tiles in FOV will be remembered after they get out
# of sight, out of mind :^)
cur_map.explored[pos] = True
# Position is not visible, but has been explored before
elif cur_map.explored[pos]:
if wall:
cls.console.draw_char(x,
y,
None,
fg=None,
bg=Colors.WALL_DARK)
else:
cls.console.draw_char(x,
y,
None,
fg=None,
bg=Colors.GROUND_DARK)
def get_last_control_point(interval):
"""
Returns the last control point of a bezier interval
Args:
interval (dict) : Holds one interval of the bezier curve that is two waypoints
Returns:
(misc.Vector) If the interval holds position bezier
(float) Else : the interval holds value bezier
"""
if len(interval["e"]) >= 2:
en = Vector(interval["e"][0], interval["e"][1])
else:
en = interval["e"][0]
return en
def place_entity_randomly(self, entity, room, allow_overlap=False):
"""
Places the given entity randomly in a given room.
"""
# For now, naively assume that there's a free spot
while True:
# Get a random position inside the room
x = randint(room.x1 + 1, room.x2 - 1)
y = randint(room.y1 + 1, room.y2 - 1)
position = Vector(x, y)
# Check if there's already an entity in this spot
if not allow_overlap and [
entity
for entity in self.entities if entity.pos == position
]:
continue
# We found a valid spot, place the entity
entity.place(self, position)
return
class Entity(ABC):
"""
An entity is any object that can be visually represented in the game map.
Entities are represented by a character that is displayed to the screen,
and a color that is applied to said character.
Note:
This is an abstract class and cannot be instanciated directly, it must be
sub-classed in order for it to be usable.
Examples:
* A chest containing items, traps, etc.
* The player character.
* Enemies.
Args:
key (Enum): An identifier for the entity in the registry.
name (str): A name for the entity, doesn't have to be unique.
type (str): Pseudo-type of this entity, can be one of 'player', 'npc',
'enemy', 'item', ...
char (str): How the entity will be visually displayed.
color (Colors): Color of the character that visually represents this entity.
blocks (bool): Whether this entity is blocking or not.
render_priority (RenderPriority): At what layer should this entity be
rendered.
"""
pos = Vector(0, 0)
game_map = None
@abstractmethod
def __init__(self, key, name, type, char, color, blocks, render_priority):
self.key = key
self.name = name
self.type = type
self.char = char
self.color = color
self.blocks = blocks
self.render_priority = render_priority
self.behavior = None
def __repr__(self):
return f"{self.key.name} '{self.name}' <{self.type}>@{self.pos}"
def move(self, direction):
"""
Move this entity in the specified direction in the given map.
Args:
direction (Vector): Direction towards which to move this entity.
"""
old_pos = self.pos
self.pos += direction
if self.blocks:
# Update blocked tile in the map
self.game_map.walkable[old_pos] = True
self.game_map.walkable[self.pos] = False
def distance_to(self, dest):
"""
Calculate the distance between this entity and the destination position.
Args:
dest (Vector): Vector to calculate the distance to.
Returns:
float: The relative distance between this entity and the destination
position.
"""
return (self.pos - dest).norm
def move_towards(self, dest):
"""
Move towards the destination if there's a clear path.
Args:
dest (Vector): Position to move to.
"""
path = self.game_map.compute_path(self.pos, dest)
if not path:
# Don't do anything
return
next_tile = path[0]
direction = next_tile - self.pos
if self.game_map.walkable[
next_tile] and not self.game_map.get_blocking_entity_at_location(
next_tile):
self.move(direction)
def place(self, game_map, position):
"""
Place the entity at a certain position in the given map.
Args:
game_map (Level): Level in which to place the entity.
position (Vector): Position in the level where the entity should be placed.
"""
# If the entity was on another map, first remove it from there
if self.game_map:
self.game_map.entities.remove(self)
self.game_map.walkable[self.pos] = True
self.game_map = game_map
self.pos = position
game_map.entities.append(self)
if self.blocks:
game_map.walkable[position] = False
def take_turn(self, target):
"""
The entity takes a turn, using the logic defined by its behavior.
If the actor doesn't have a behavior, do nothing.
Args:
target (Entity): Target entity used by the behavior logic.
"""
if self.behavior is not None:
self.behavior(self, target)
def _create_v_tunnel(self, y1, y2, x):
"""Create a vertical tunnel from y1 to y2 at a fixed x."""
for y in range(min(y1, y2), max(y1, y2) + 1):
pos = Vector(x, y)
self.walkable[pos] = True
self.transparent[pos] = True
def _create_h_tunnel(self, x1, x2, y):
"""Create an horizontal tunnel from x1 to x2 at a fixed y."""
for x in range(min(x1, x2), max(x1, x2) + 1):
pos = Vector(x, y)
self.walkable[pos] = True
self.transparent[pos] = True
def test_vector_operations(self):
u = Vector(0.3, 2)
v = Vector(3, -2.5)
assert u + v == Vector(3.3, -0.5)
assert u - v == Vector(-2.7, 4.5)
def test_vector_norm(self, x, y, result):
tol = 1e-5
norm = Vector(x, y).norm
assert abs(norm - result) < tol
def test_vector_normalized(self):
tol = 1e-5
assert Vector(1, 0).normalized() == Vector(1, 0)
assert Vector(0, -0.5).normalized() == Vector(0, -1)
assert (Vector(-1, 1).normalized() -
Vector(-sqrt(2), sqrt(2))).norm - 1. < tol
def test_vector_repr(self):
assert repr(Vector(-0.5, 2)) == "(-0.5, 2)"