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Copy pathsamples_tcod.py
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executable file
·1490 lines (1298 loc) · 54.5 KB
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#!/usr/bin/env python
"""This code demonstrates various usages of python-tcod."""
# To the extent possible under law, the libtcod maintainers have waived all
# copyright and related or neighboring rights to these samples.
# https://creativecommons.org/publicdomain/zero/1.0/
from __future__ import annotations
import copy
import importlib.metadata
import math
import random
import sys
import time
import warnings
from dataclasses import dataclass
from pathlib import Path
from typing import TYPE_CHECKING, Any
import numpy as np
import tcod.bsp
import tcod.cffi
import tcod.console
import tcod.constants
import tcod.context
import tcod.event
import tcod.image
import tcod.los
import tcod.map
import tcod.noise
import tcod.path
import tcod.render
import tcod.sdl.mouse
import tcod.sdl.render
import tcod.tileset
from tcod import libtcodpy
from tcod.event import KeySym
if TYPE_CHECKING:
from numpy.typing import NDArray
DATA_DIR = Path(__file__).parent / "../libtcod/data"
"""Path of the samples data directory."""
assert DATA_DIR.exists(), "Data directory is missing, did you forget to run `git submodule update --init`?"
WHITE = (255, 255, 255)
GREY = (127, 127, 127)
BLACK = (0, 0, 0)
LIGHT_BLUE = (63, 63, 255)
LIGHT_YELLOW = (255, 255, 63)
SAMPLE_SCREEN_WIDTH = 46
SAMPLE_SCREEN_HEIGHT = 20
SAMPLE_SCREEN_X = 20
SAMPLE_SCREEN_Y = 10
FONT = DATA_DIR / "fonts/dejavu10x10_gs_tc.png"
# Mutable global names.
context: tcod.context.Context
tileset: tcod.tileset.Tileset
console_render: tcod.render.SDLConsoleRender # Optional SDL renderer.
sample_minimap: tcod.sdl.render.Texture # Optional minimap texture.
root_console = tcod.console.Console(80, 50)
sample_console = tcod.console.Console(SAMPLE_SCREEN_WIDTH, SAMPLE_SCREEN_HEIGHT)
cur_sample = 0 # Current selected sample.
frame_times = [time.perf_counter()]
frame_length = [0.0]
START_TIME = time.perf_counter()
def _get_elapsed_time() -> float:
"""Return time passed since the start of the program."""
return time.perf_counter() - START_TIME
class Sample:
"""Samples base class."""
name: str = "???"
def on_enter(self) -> None:
"""Called when entering a sample."""
def on_draw(self) -> None:
"""Called every frame."""
def on_event(self, event: tcod.event.Event) -> None:
"""Called for each event."""
global cur_sample
match event:
case tcod.event.Quit() | tcod.event.KeyDown(sym=KeySym.ESCAPE):
raise SystemExit
case tcod.event.KeyDown(sym=KeySym.DOWN):
cur_sample = (cur_sample + 1) % len(SAMPLES)
SAMPLES[cur_sample].on_enter()
draw_samples_menu()
case tcod.event.KeyDown(sym=KeySym.UP):
cur_sample = (cur_sample - 1) % len(SAMPLES)
SAMPLES[cur_sample].on_enter()
draw_samples_menu()
case tcod.event.KeyDown(sym=KeySym.RETURN, mod=mod) if mod & tcod.event.Modifier.ALT:
sdl_window = context.sdl_window
if sdl_window:
sdl_window.fullscreen = not sdl_window.fullscreen
case tcod.event.KeyDown(sym=tcod.event.KeySym.PRINTSCREEN | tcod.event.KeySym.P):
print("screenshot")
if event.mod & tcod.event.Modifier.ALT:
libtcodpy.console_save_apf(root_console, "samples.apf")
print("apf")
else:
libtcodpy.sys_save_screenshot()
print("png")
case tcod.event.KeyDown(sym=sym) if sym in RENDERER_KEYS:
init_context(RENDERER_KEYS[sym]) # Swap the active context for one with a different renderer
class TrueColorSample(Sample):
"""Simple performance benchmark."""
name = "True colors"
def __init__(self) -> None:
"""Initialize random generators."""
self.noise = tcod.noise.Noise(2, tcod.noise.Algorithm.SIMPLEX)
"""Noise for generating color."""
self.generator = np.random.default_rng()
"""Numpy generator for random text."""
def on_draw(self) -> None:
"""Draw this sample."""
self.interpolate_corner_colors()
self.darken_background_characters()
self.randomize_sample_console()
sample_console.print(
x=1,
y=5,
width=sample_console.width - 2,
height=sample_console.height - 1,
text="The Doryen library uses 24 bits colors, for both background and foreground.",
fg=WHITE,
bg=GREY,
bg_blend=libtcodpy.BKGND_MULTIPLY,
alignment=libtcodpy.CENTER,
)
def get_corner_colors(self) -> NDArray[np.uint8]:
"""Return 4 random 8-bit colors, smoothed over time."""
noise_samples_ij = (
[ # i coordinates are per color channel per color
[0, 1, 2],
[3, 4, 5],
[6, 7, 8],
[9, 10, 11],
],
time.perf_counter(), # j coordinate is time broadcast to all samples
)
colors = self.noise[noise_samples_ij]
colors = ((colors + 1.0) * (0.5 * 255.0)).clip(min=0, max=255) # Convert -1..1 to 0..255
return colors.astype(np.uint8)
def interpolate_corner_colors(self) -> None:
"""Interpolate corner colors across the sample console."""
colors = self.get_corner_colors()
top = np.linspace(colors[0], colors[1], SAMPLE_SCREEN_WIDTH)
bottom = np.linspace(colors[2], colors[3], SAMPLE_SCREEN_WIDTH)
sample_console.bg[:] = np.linspace(top, bottom, SAMPLE_SCREEN_HEIGHT)
def darken_background_characters(self) -> None:
"""Darken background characters."""
sample_console.fg[:] = sample_console.bg[:]
sample_console.fg[:] //= 2
def randomize_sample_console(self) -> None:
"""Randomize sample console characters."""
sample_console.ch[:] = self.generator.integers(
low=ord("a"),
high=ord("z"),
endpoint=True,
size=sample_console.ch.size,
dtype=np.intc,
).reshape(sample_console.ch.shape)
class OffscreenConsoleSample(Sample):
"""Console blit example."""
name = "Offscreen console"
CONSOLE_MOVE_RATE = 1 / 2
CONSOLE_MOVE_MARGIN = 5
def __init__(self) -> None:
"""Initialize the offscreen console."""
self.secondary = tcod.console.Console(sample_console.width // 2, sample_console.height // 2)
self.screenshot = tcod.console.Console(sample_console.width, sample_console.height)
self.counter = 0.0
self.x = 0
self.y = 0
self.x_dir = 1
self.y_dir = 1
self.secondary.draw_frame(0, 0, self.secondary.width, self.secondary.height, clear=False, fg=WHITE, bg=BLACK)
self.secondary.print(
0,
0,
width=self.secondary.width,
height=self.secondary.height,
text=" Offscreen console ",
fg=BLACK,
bg=WHITE,
alignment=tcod.constants.CENTER,
)
self.secondary.print(
x=1,
y=2,
width=sample_console.width // 2 - 2,
height=sample_console.height // 2,
text="You can render to an offscreen console and blit in on another one, simulating alpha transparency.",
fg=WHITE,
bg=None,
alignment=libtcodpy.CENTER,
)
def on_enter(self) -> None:
"""Capture the previous sample screen as this samples background."""
self.counter = _get_elapsed_time()
sample_console.blit(dest=self.screenshot) # get a "screenshot" of the current sample screen
def on_draw(self) -> None:
"""Draw and animate the offscreen console."""
if _get_elapsed_time() - self.counter >= self.CONSOLE_MOVE_RATE:
self.counter = _get_elapsed_time()
self.x += self.x_dir
self.y += self.y_dir
if self.x == sample_console.width / 2 + self.CONSOLE_MOVE_MARGIN:
self.x_dir = -1
elif self.x == -self.CONSOLE_MOVE_MARGIN:
self.x_dir = 1
if self.y == sample_console.height / 2 + self.CONSOLE_MOVE_MARGIN:
self.y_dir = -1
elif self.y == -self.CONSOLE_MOVE_MARGIN:
self.y_dir = 1
self.screenshot.blit(sample_console)
self.secondary.blit(
sample_console, self.x, self.y, 0, 0, sample_console.width // 2, sample_console.height // 2, 1.0, 0.75
)
class LineDrawingSample(Sample):
name = "Line drawing"
FLAG_NAMES = (
"BKGND_NONE",
"BKGND_SET",
"BKGND_MULTIPLY",
"BKGND_LIGHTEN",
"BKGND_DARKEN",
"BKGND_SCREEN",
"BKGND_COLOR_DODGE",
"BKGND_COLOR_BURN",
"BKGND_ADD",
"BKGND_ADDALPHA",
"BKGND_BURN",
"BKGND_OVERLAY",
"BKGND_ALPHA",
)
def __init__(self) -> None:
self.mk_flag = libtcodpy.BKGND_SET
self.bk_flag = libtcodpy.BKGND_SET
self.background = tcod.console.Console(sample_console.width, sample_console.height)
# initialize the colored background
self.background.bg[:, :, 0] = np.linspace(0, 255, self.background.width)
self.background.bg[:, :, 2] = np.linspace(0, 255, self.background.height)[:, np.newaxis]
self.background.bg[:, :, 1] = (self.background.bg[:, :, 0].astype(int) + self.background.bg[:, :, 2]) / 2
self.background.ch[:] = ord(" ")
def on_event(self, event: tcod.event.Event) -> None:
match event:
case tcod.event.KeyDown(sym=KeySym.RETURN | KeySym.KP_ENTER):
self.bk_flag += 1
if (self.bk_flag & 0xFF) > libtcodpy.BKGND_ALPH:
self.bk_flag = libtcodpy.BKGND_NONE
case _:
super().on_event(event)
def on_draw(self) -> None:
alpha = 0.0
if (self.bk_flag & 0xFF) == libtcodpy.BKGND_ALPH:
# for the alpha mode, update alpha every frame
alpha = (1.0 + math.cos(time.time() * 2)) / 2.0
self.bk_flag = libtcodpy.BKGND_ALPHA(int(alpha))
elif (self.bk_flag & 0xFF) == libtcodpy.BKGND_ADDA:
# for the add alpha mode, update alpha every frame
alpha = (1.0 + math.cos(time.time() * 2)) / 2.0
self.bk_flag = libtcodpy.BKGND_ADDALPHA(int(alpha))
self.background.blit(sample_console)
rect_y = int((sample_console.height - 2) * ((1.0 + math.cos(time.time())) / 2.0))
for x in range(sample_console.width):
value = x * 255 // sample_console.width
col = (value, value, value)
sample_console.draw_rect(x=x, y=rect_y, width=1, height=3, ch=0, fg=None, bg=col, bg_blend=self.bk_flag)
angle = time.time() * 2.0
cos_angle = math.cos(angle)
sin_angle = math.sin(angle)
xo = int(sample_console.width // 2 * (1 + cos_angle))
yo = int(sample_console.height // 2 + sin_angle * sample_console.width // 2)
xd = int(sample_console.width // 2 * (1 - cos_angle))
yd = int(sample_console.height // 2 - sin_angle * sample_console.width // 2)
# draw the line
# in python the easiest way is to use the line iterator
for x, y in tcod.los.bresenham((xo, yo), (xd, yd)).tolist():
if 0 <= x < sample_console.width and 0 <= y < sample_console.height:
sample_console.draw_rect(x, y, width=1, height=1, ch=0, fg=None, bg=LIGHT_BLUE, bg_blend=self.bk_flag)
sample_console.print(2, 2, f"{self.FLAG_NAMES[self.bk_flag & 0xFF]} (ENTER to change)", fg=WHITE, bg=None)
class NoiseSample(Sample):
name = "Noise"
NOISE_OPTIONS = ( # (name, algorithm, implementation)
(
"perlin noise",
tcod.noise.Algorithm.PERLIN,
tcod.noise.Implementation.SIMPLE,
),
(
"simplex noise",
tcod.noise.Algorithm.SIMPLEX,
tcod.noise.Implementation.SIMPLE,
),
(
"wavelet noise",
tcod.noise.Algorithm.WAVELET,
tcod.noise.Implementation.SIMPLE,
),
(
"perlin fbm",
tcod.noise.Algorithm.PERLIN,
tcod.noise.Implementation.FBM,
),
(
"perlin turbulence",
tcod.noise.Algorithm.PERLIN,
tcod.noise.Implementation.TURBULENCE,
),
(
"simplex fbm",
tcod.noise.Algorithm.SIMPLEX,
tcod.noise.Implementation.FBM,
),
(
"simplex turbulence",
tcod.noise.Algorithm.SIMPLEX,
tcod.noise.Implementation.TURBULENCE,
),
(
"wavelet fbm",
tcod.noise.Algorithm.WAVELET,
tcod.noise.Implementation.FBM,
),
(
"wavelet turbulence",
tcod.noise.Algorithm.WAVELET,
tcod.noise.Implementation.TURBULENCE,
),
)
def __init__(self) -> None:
self.func = 0
self.dx = 0.0
self.dy = 0.0
self.octaves = 4.0
self.zoom = 3.0
self.hurst = libtcodpy.NOISE_DEFAULT_HURST
self.lacunarity = libtcodpy.NOISE_DEFAULT_LACUNARITY
self.noise = self.get_noise()
self.img = tcod.image.Image(SAMPLE_SCREEN_WIDTH * 2, SAMPLE_SCREEN_HEIGHT * 2)
@property
def algorithm(self) -> int:
return self.NOISE_OPTIONS[self.func][1]
@property
def implementation(self) -> int:
return self.NOISE_OPTIONS[self.func][2]
def get_noise(self) -> tcod.noise.Noise:
return tcod.noise.Noise(
2,
self.algorithm,
self.implementation,
self.hurst,
self.lacunarity,
self.octaves,
seed=None,
)
def on_draw(self) -> None:
self.dx = _get_elapsed_time() * 0.25
self.dy = _get_elapsed_time() * 0.25
for y in range(2 * sample_console.height):
for x in range(2 * sample_console.width):
f = [
self.zoom * x / (2 * sample_console.width) + self.dx,
self.zoom * y / (2 * sample_console.height) + self.dy,
]
value = self.noise.get_point(*f)
c = int((value + 1.0) / 2.0 * 255)
c = max(0, min(c, 255))
self.img.put_pixel(x, y, (c // 2, c // 2, c))
rect_w = 24
rect_h = 13
if self.implementation == tcod.noise.Implementation.SIMPLE:
rect_h = 10
sample_console.draw_semigraphics(np.asarray(self.img))
sample_console.draw_rect(
2,
2,
rect_w,
rect_h,
ch=0,
fg=None,
bg=GREY,
bg_blend=libtcodpy.BKGND_MULTIPLY,
)
sample_console.fg[2 : 2 + rect_h, 2 : 2 + rect_w] = (
sample_console.fg[2 : 2 + rect_h, 2 : 2 + rect_w] * GREY / 255
)
for cur_func in range(len(self.NOISE_OPTIONS)):
text = f"{cur_func + 1} : {self.NOISE_OPTIONS[cur_func][0]}"
if cur_func == self.func:
sample_console.print(2, 2 + cur_func, text, fg=WHITE, bg=LIGHT_BLUE)
else:
sample_console.print(2, 2 + cur_func, text, fg=GREY, bg=None)
sample_console.print(2, 11, f"Y/H : zoom ({self.zoom:2.1f})", fg=WHITE, bg=None)
if self.implementation != tcod.noise.Implementation.SIMPLE:
sample_console.print(
2,
12,
f"E/D : hurst ({self.hurst:2.1f})",
fg=WHITE,
bg=None,
)
sample_console.print(
2,
13,
f"R/F : lacunarity ({self.lacunarity:2.1f})",
fg=WHITE,
bg=None,
)
sample_console.print(
2,
14,
f"T/G : octaves ({self.octaves:2.1f})",
fg=WHITE,
bg=None,
)
def on_event(self, event: tcod.event.Event) -> None:
match event:
case tcod.event.KeyDown(sym=sym) if KeySym.N9 >= sym >= KeySym.N1:
self.func = sym - tcod.event.KeySym.N1
self.noise = self.get_noise()
case tcod.event.KeyDown(sym=KeySym.E):
self.hurst += 0.1
self.noise = self.get_noise()
case tcod.event.KeyDown(sym=KeySym.D):
self.hurst -= 0.1
self.noise = self.get_noise()
case tcod.event.KeyDown(sym=KeySym.R):
self.lacunarity += 0.5
self.noise = self.get_noise()
case tcod.event.KeyDown(sym=KeySym.F):
self.lacunarity -= 0.5
self.noise = self.get_noise()
case tcod.event.KeyDown(sym=KeySym.T):
self.octaves += 0.5
self.noise.octaves = self.octaves
case tcod.event.KeyDown(sym=KeySym.G):
self.octaves -= 0.5
self.noise.octaves = self.octaves
case tcod.event.KeyDown(sym=KeySym.Y):
self.zoom += 0.2
case tcod.event.KeyDown(sym=KeySym.H):
self.zoom -= 0.2
case _:
super().on_event(event)
#############################################
# field of view sample
#############################################
DARK_WALL = (0, 0, 100)
LIGHT_WALL = (130, 110, 50)
DARK_GROUND = (50, 50, 150)
LIGHT_GROUND = (200, 180, 50)
SAMPLE_MAP_ = (
"##############################################",
"####################### #################",
"##################### # ###############",
"###################### ### ###########",
"################## ##### ####",
"################ ######## ###### ####",
"############### #################### ####",
"################ ###### ##",
"######## ####### ###### # # # ##",
"######## ###### ### ##",
"######## ##",
"#### ###### ### # # # ##",
"#### ### ########## #### ##",
"#### ### ########## ###########=##########",
"#### ################## ##### #####",
"#### ### #### ##### #####",
"#### # #### #####",
"######## # #### ##### #####",
"######## ##### ####################",
"##############################################",
)
SAMPLE_MAP: NDArray[Any] = np.array([[ord(c) for c in line] for line in SAMPLE_MAP_])
FOV_ALGO_NAMES = (
"BASIC ",
"DIAMOND ",
"SHADOW ",
"PERMISSIVE0",
"PERMISSIVE1",
"PERMISSIVE2",
"PERMISSIVE3",
"PERMISSIVE4",
"PERMISSIVE5",
"PERMISSIVE6",
"PERMISSIVE7",
"PERMISSIVE8",
"RESTRICTIVE",
"SYMMETRIC_SHADOWCAST",
)
TORCH_RADIUS = 10
SQUARED_TORCH_RADIUS = TORCH_RADIUS * TORCH_RADIUS
class FOVSample(Sample):
name = "Field of view"
def __init__(self) -> None:
self.player_x = 20
self.player_y = 10
self.torch = False
self.light_walls = True
self.algo_num = libtcodpy.FOV_SYMMETRIC_SHADOWCAST
self.noise = tcod.noise.Noise(1) # 1D noise for the torch flickering.
map_shape = (SAMPLE_SCREEN_HEIGHT, SAMPLE_SCREEN_WIDTH)
self.walkable: NDArray[np.bool_] = np.zeros(map_shape, dtype=bool)
self.walkable[:] = SAMPLE_MAP[:] == ord(" ")
self.transparent: NDArray[np.bool_] = np.zeros(map_shape, dtype=bool)
self.transparent[:] = self.walkable[:] | (SAMPLE_MAP[:] == ord("="))
# Lit background colors for the map.
self.light_map_bg: NDArray[np.uint8] = np.full(SAMPLE_MAP.shape, LIGHT_GROUND, dtype="3B")
self.light_map_bg[SAMPLE_MAP[:] == ord("#")] = LIGHT_WALL
# Dark background colors for the map.
self.dark_map_bg: NDArray[np.uint8] = np.full(SAMPLE_MAP.shape, DARK_GROUND, dtype="3B")
self.dark_map_bg[SAMPLE_MAP[:] == ord("#")] = DARK_WALL
def draw_ui(self) -> None:
sample_console.print(
1,
1,
"IJKL : move around\nT : torch fx {}\nW : light walls {}\n+-: algo {}".format(
"on " if self.torch else "off",
"on " if self.light_walls else "off",
FOV_ALGO_NAMES[self.algo_num],
),
fg=WHITE,
bg=None,
)
def on_draw(self) -> None:
sample_console.clear()
# Draw the help text & player @.
self.draw_ui()
sample_console.print(self.player_x, self.player_y, "@")
# Draw windows.
sample_console.rgb["ch"][SAMPLE_MAP[:] == ord("=")] = 0x2550 # BOX DRAWINGS DOUBLE HORIZONTAL
sample_console.rgb["fg"][SAMPLE_MAP[:] == ord("=")] = BLACK
# Get a 2D boolean array of visible cells.
fov = tcod.map.compute_fov(
transparency=self.transparent,
pov=(self.player_y, self.player_x),
radius=TORCH_RADIUS if self.torch else 0,
light_walls=self.light_walls,
algorithm=self.algo_num,
)
if self.torch:
# Derive the touch from noise based on the current time.
torch_t = _get_elapsed_time() * 5
# Randomize the light position between -1.5 and 1.5
torch_x = self.player_x + self.noise.get_point(torch_t) * 1.5
torch_y = self.player_y + self.noise.get_point(torch_t + 11) * 1.5
# Extra light brightness.
brightness = 0.2 * self.noise.get_point(torch_t + 17)
# Get the squared distance using a mesh grid.
y, x = np.mgrid[:SAMPLE_SCREEN_HEIGHT, :SAMPLE_SCREEN_WIDTH]
# Center the mesh grid on the torch position.
x = x.astype(np.float32) - torch_x
y = y.astype(np.float32) - torch_y
distance_squared = x**2 + y**2 # 2D squared distance array.
# Get the currently visible cells.
visible = (distance_squared < SQUARED_TORCH_RADIUS) & fov
# Invert the values, so that the center is the 'brightest' point.
light = SQUARED_TORCH_RADIUS - distance_squared
light /= SQUARED_TORCH_RADIUS # Convert into non-squared distance.
light += brightness # Add random brightness.
light.clip(0, 1, out=light) # Clamp values in-place.
light[~visible] = 0 # Set non-visible areas to darkness.
# Setup background colors for floating point math.
light_bg: NDArray[np.float16] = self.light_map_bg.astype(np.float16)
dark_bg: NDArray[np.float16] = self.dark_map_bg.astype(np.float16)
# Linear interpolation between colors.
sample_console.rgb["bg"] = dark_bg + (light_bg - dark_bg) * light[..., np.newaxis]
else:
sample_console.bg[...] = np.select(
condlist=[fov[:, :, np.newaxis]],
choicelist=[self.light_map_bg],
default=self.dark_map_bg,
)
def on_event(self, event: tcod.event.Event) -> None:
MOVE_KEYS = { # noqa: N806
tcod.event.KeySym.I: (0, -1),
tcod.event.KeySym.J: (-1, 0),
tcod.event.KeySym.K: (0, 1),
tcod.event.KeySym.L: (1, 0),
}
FOV_SELECT_KEYS = { # noqa: N806
tcod.event.KeySym.MINUS: -1,
tcod.event.KeySym.EQUALS: 1,
tcod.event.KeySym.KP_MINUS: -1,
tcod.event.KeySym.KP_PLUS: 1,
}
match event:
case tcod.event.KeyDown(sym=sym) if sym in MOVE_KEYS:
x, y = MOVE_KEYS[sym]
if self.walkable[self.player_y + y, self.player_x + x]:
self.player_x += x
self.player_y += y
case tcod.event.KeyDown(sym=KeySym.T):
self.torch = not self.torch
case tcod.event.KeyDown(sym=KeySym.W):
self.light_walls = not self.light_walls
case tcod.event.KeyDown(sym=sym) if sym in FOV_SELECT_KEYS:
self.algo_num += FOV_SELECT_KEYS[sym]
self.algo_num %= len(FOV_ALGO_NAMES)
case _:
super().on_event(event)
class PathfindingSample(Sample):
name = "Path finding"
def __init__(self) -> None:
"""Initialize this sample."""
self.player_x = 20
self.player_y = 10
self.dest_x = 24
self.dest_y = 1
self.using_astar = True
self.busy = 0.0
self.cost = SAMPLE_MAP[:] == ord(" ")
self.graph = tcod.path.SimpleGraph(cost=self.cost, cardinal=70, diagonal=99)
self.pathfinder = tcod.path.Pathfinder(graph=self.graph)
self.background_console = tcod.console.Console(SAMPLE_SCREEN_WIDTH, SAMPLE_SCREEN_HEIGHT)
# draw the dungeon
self.background_console.rgb["fg"] = BLACK
self.background_console.rgb["bg"] = DARK_GROUND
self.background_console.rgb["bg"][SAMPLE_MAP[:] == ord("#")] = DARK_WALL
self.background_console.rgb["ch"][SAMPLE_MAP[:] == ord("=")] = ord("═")
def on_enter(self) -> None:
"""Do nothing."""
def on_draw(self) -> None:
"""Recompute and render pathfinding."""
self.pathfinder = tcod.path.Pathfinder(graph=self.graph)
# self.pathfinder.clear() # Known issues, needs fixing # noqa: ERA001
self.pathfinder.add_root((self.player_y, self.player_x))
# draw the dungeon
self.background_console.blit(dest=sample_console)
sample_console.print(self.dest_x, self.dest_y, "+", fg=WHITE)
sample_console.print(self.player_x, self.player_y, "@", fg=WHITE)
sample_console.print(1, 1, "IJKL / mouse :\nmove destination\nTAB : A*/dijkstra", fg=WHITE, bg=None)
sample_console.print(1, 4, "Using : A*", fg=WHITE, bg=None)
if not self.using_astar:
self.pathfinder.resolve(goal=None)
reachable = self.pathfinder.distance != np.iinfo(self.pathfinder.distance.dtype).max
# draw distance from player
dijkstra_max_dist = float(self.pathfinder.distance[reachable].max())
np.array(self.pathfinder.distance, copy=True, dtype=np.float32)
interpolate = self.pathfinder.distance[reachable] * 0.9 / dijkstra_max_dist
color_delta = (np.array(DARK_GROUND) - np.array(LIGHT_GROUND)).astype(np.float32)
sample_console.rgb["bg"][reachable] = np.array(LIGHT_GROUND) + interpolate[:, np.newaxis] * color_delta
# draw the path
path = self.pathfinder.path_to((self.dest_y, self.dest_x))[1:]
sample_console.rgb["bg"][tuple(path.T)] = LIGHT_GROUND
# move the creature
self.busy -= frame_length[-1]
if self.busy <= 0.0:
self.busy = 0.2
if len(path):
self.player_y = int(path.item(0, 0))
self.player_x = int(path.item(0, 1))
def on_event(self, event: tcod.event.Event) -> None:
"""Handle movement and UI."""
match event:
case tcod.event.KeyDown(sym=KeySym.I) if self.dest_y > 0: # destination move north
self.dest_y -= 1
case tcod.event.KeyDown(sym=KeySym.K) if self.dest_y < SAMPLE_SCREEN_HEIGHT - 1: # destination move south
self.dest_y += 1
case tcod.event.KeyDown(sym=KeySym.J) if self.dest_x > 0: # destination move west
self.dest_x -= 1
case tcod.event.KeyDown(sym=KeySym.L) if self.dest_x < SAMPLE_SCREEN_WIDTH - 1: # destination move east
self.dest_x += 1
case tcod.event.KeyDown(sym=KeySym.TAB):
self.using_astar = not self.using_astar
case tcod.event.MouseMotion(): # Move destination via mouseover
mx = event.tile.x - SAMPLE_SCREEN_X
my = event.tile.y - SAMPLE_SCREEN_Y
if 0 <= mx < SAMPLE_SCREEN_WIDTH and 0 <= my < SAMPLE_SCREEN_HEIGHT:
self.dest_x = int(mx)
self.dest_y = int(my)
case _:
super().on_event(event)
#############################################
# bsp sample
#############################################
# draw a vertical line
def vline(map_: NDArray[np.bool_], x: int, y1: int, y2: int) -> None:
if y1 > y2:
y1, y2 = y2, y1
for y in range(y1, y2 + 1):
map_[y, x] = True
# draw a vertical line up until we reach an empty space
def vline_up(map_: NDArray[np.bool_], x: int, y: int) -> None:
while y >= 0 and not map_[y, x]:
map_[y, x] = True
y -= 1
# draw a vertical line down until we reach an empty space
def vline_down(map_: NDArray[np.bool_], x: int, y: int) -> None:
while y < SAMPLE_SCREEN_HEIGHT and not map_[y, x]:
map_[y, x] = True
y += 1
# draw a horizontal line
def hline(map_: NDArray[np.bool_], x1: int, y: int, x2: int) -> None:
if x1 > x2:
x1, x2 = x2, x1
for x in range(x1, x2 + 1):
map_[y, x] = True
# draw a horizontal line left until we reach an empty space
def hline_left(map_: NDArray[np.bool_], x: int, y: int) -> None:
while x >= 0 and not map_[y, x]:
map_[y, x] = True
x -= 1
# draw a horizontal line right until we reach an empty space
def hline_right(map_: NDArray[np.bool_], x: int, y: int) -> None:
while x < SAMPLE_SCREEN_WIDTH and not map_[y, x]:
map_[y, x] = True
x += 1
# the class building the dungeon from the bsp nodes
def traverse_node(
bsp_map: NDArray[np.bool_],
node: tcod.bsp.BSP,
*,
bsp_min_room_size: int,
bsp_random_room: bool,
bsp_room_walls: bool,
) -> None:
if not node.children:
# calculate the room size
if bsp_room_walls:
node.width -= 1
node.height -= 1
if bsp_random_room:
new_width = random.randint(min(node.width, bsp_min_room_size), node.width)
new_height = random.randint(min(node.height, bsp_min_room_size), node.height)
node.x += random.randint(0, node.width - new_width)
node.y += random.randint(0, node.height - new_height)
node.width, node.height = new_width, new_height
# dig the room
bsp_map[node.y : node.y + node.height, node.x : node.x + node.width] = True
else:
# resize the node to fit its sons
left, right = node.children
node.x = min(left.x, right.x)
node.y = min(left.y, right.y)
node.width = max(left.x + left.width, right.x + right.width) - node.x
node.height = max(left.y + left.height, right.y + right.height) - node.y
# create a corridor between the two lower nodes
if node.horizontal:
# vertical corridor
if left.x + left.width - 1 < right.x or right.x + right.width - 1 < left.x:
# no overlapping zone. we need a Z shaped corridor
x1 = random.randint(left.x, left.x + left.width - 1)
x2 = random.randint(right.x, right.x + right.width - 1)
y = random.randint(left.y + left.height, right.y)
vline_up(bsp_map, x1, y - 1)
hline(bsp_map, x1, y, x2)
vline_down(bsp_map, x2, y + 1)
else:
# straight vertical corridor
min_x = max(left.x, right.x)
max_x = min(left.x + left.width - 1, right.x + right.width - 1)
x = random.randint(min_x, max_x)
vline_down(bsp_map, x, right.y)
vline_up(bsp_map, x, right.y - 1)
elif left.y + left.height - 1 < right.y or right.y + right.height - 1 < left.y: # horizontal corridor
# no overlapping zone. we need a Z shaped corridor
y1 = random.randint(left.y, left.y + left.height - 1)
y2 = random.randint(right.y, right.y + right.height - 1)
x = random.randint(left.x + left.width, right.x)
hline_left(bsp_map, x - 1, y1)
vline(bsp_map, x, y1, y2)
hline_right(bsp_map, x + 1, y2)
else:
# straight horizontal corridor
min_y = max(left.y, right.y)
max_y = min(left.y + left.height - 1, right.y + right.height - 1)
y = random.randint(min_y, max_y)
hline_left(bsp_map, right.x - 1, y)
hline_right(bsp_map, right.x, y)
class BSPSample(Sample):
name = "Bsp toolkit"
def __init__(self) -> None:
self.bsp = tcod.bsp.BSP(1, 1, SAMPLE_SCREEN_WIDTH - 1, SAMPLE_SCREEN_HEIGHT - 1)
self.bsp_map: NDArray[np.bool_] = np.zeros((SAMPLE_SCREEN_HEIGHT, SAMPLE_SCREEN_WIDTH), dtype=bool)
self.bsp_depth = 8
self.bsp_min_room_size = 4
self.bsp_random_room = False # a room fills a random part of the node or the maximum available space ?
self.bsp_room_walls = True # if true, there is always a wall on north & west side of a room
self.bsp_generate()
def bsp_generate(self) -> None:
self.bsp.children = ()
if self.bsp_room_walls:
self.bsp.split_recursive(
self.bsp_depth,
self.bsp_min_room_size + 1,
self.bsp_min_room_size + 1,
1.5,
1.5,
)
else:
self.bsp.split_recursive(self.bsp_depth, self.bsp_min_room_size, self.bsp_min_room_size, 1.5, 1.5)
self.bsp_refresh()
def bsp_refresh(self) -> None:
self.bsp_map[...] = False
for node in copy.deepcopy(self.bsp).inverted_level_order():
traverse_node(
self.bsp_map,
node,
bsp_min_room_size=self.bsp_min_room_size,
bsp_random_room=self.bsp_random_room,
bsp_room_walls=self.bsp_room_walls,
)
def on_draw(self) -> None:
sample_console.clear()
rooms = "OFF"
if self.bsp_random_room:
rooms = "ON"
sample_console.print(
1,
1,
"ENTER : rebuild bsp\n"
"SPACE : rebuild dungeon\n"
f"+-: bsp depth {self.bsp_depth}\n"
f"*/: room size {self.bsp_min_room_size}\n"
f"1 : random room size {rooms}",
fg=WHITE,
bg=None,
)
if self.bsp_random_room:
walls = "OFF"
if self.bsp_room_walls:
walls = "ON"
sample_console.print(1, 6, f"2 : room walls {walls}", fg=WHITE, bg=None)
# render the level
for y in range(SAMPLE_SCREEN_HEIGHT):
for x in range(SAMPLE_SCREEN_WIDTH):
color = DARK_GROUND if self.bsp_map[y, x] else DARK_WALL
libtcodpy.console_set_char_background(sample_console, x, y, color, libtcodpy.BKGND_SET)
def on_event(self, event: tcod.event.Event) -> None:
match event:
case tcod.event.KeyDown(sym=KeySym.RETURN | KeySym.KP_ENTER):
self.bsp_generate()
case tcod.event.KeyDown(sym=KeySym.SPACE):
self.bsp_refresh()
case tcod.event.KeyDown(sym=KeySym.EQUALS | KeySym.KP_PLUS):
self.bsp_depth += 1
self.bsp_generate()
case tcod.event.KeyDown(sym=KeySym.MINUS | KeySym.KP_MINUS):
self.bsp_depth = max(1, self.bsp_depth - 1)
self.bsp_generate()
case tcod.event.KeyDown(sym=KeySym.N8 | KeySym.KP_MULTIPLY):
self.bsp_min_room_size += 1
self.bsp_generate()
case tcod.event.KeyDown(sym=KeySym.SLASH | KeySym.KP_DIVIDE):
self.bsp_min_room_size = max(2, self.bsp_min_room_size - 1)
self.bsp_generate()
case tcod.event.KeyDown(sym=KeySym.N1 | KeySym.KP_1):
self.bsp_random_room = not self.bsp_random_room
if not self.bsp_random_room:
self.bsp_room_walls = True
self.bsp_refresh()
case tcod.event.KeyDown(sym=KeySym.N2 | KeySym.KP_2):
self.bsp_room_walls = not self.bsp_room_walls
self.bsp_refresh()
case _:
super().on_event(event)
class ImageSample(Sample):
name = "Image toolkit"
def __init__(self) -> None:
self.img = tcod.image.Image.from_file(DATA_DIR / "img/skull.png")
self.img.set_key_color(BLACK)
self.circle = tcod.image.Image.from_file(DATA_DIR / "img/circle.png")
def on_draw(self) -> None:
sample_console.clear()
x = sample_console.width / 2 + math.cos(time.time()) * 10.0
y = sample_console.height / 2
scalex = 0.2 + 1.8 * (1.0 + math.cos(time.time() / 2)) / 2.0
scaley = scalex
angle = _get_elapsed_time()
if int(time.time()) % 2:
# split the color channels of circle.png
# the red channel
sample_console.draw_rect(0, 3, 15, 15, 0, None, (255, 0, 0))
self.circle.blit_rect(sample_console, 0, 3, -1, -1, libtcodpy.BKGND_MULTIPLY)
# the green channel
sample_console.draw_rect(15, 3, 15, 15, 0, None, (0, 255, 0))
self.circle.blit_rect(sample_console, 15, 3, -1, -1, libtcodpy.BKGND_MULTIPLY)
# the blue channel
sample_console.draw_rect(30, 3, 15, 15, 0, None, (0, 0, 255))
self.circle.blit_rect(sample_console, 30, 3, -1, -1, libtcodpy.BKGND_MULTIPLY)
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