Complete Roguelike Tutorial, using python3+libtcod, part 1 code

Showing the @ on screen

#!/usr/bin/env python
import libtcodpy as tcod

# Size of the terminal window in characters
SCREEN_WIDTH = 80  # characters wide
SCREEN_HEIGHT = 50  # characters tall

LIMIT_FPS = 20  # 20 frames-per-second maximum

# Setup displayed font
font_filename = 'arial10x10.png'
font_flags = tcod.FONT_TYPE_GREYSCALE | tcod.FONT_LAYOUT_TCOD
tcod.console_set_custom_font(font_filename, font_flags)

# Setup window
window_title = 'python/libtcod tutorial'
fullscreen = False
tcod.console_init_root(SCREEN_WIDTH, SCREEN_HEIGHT, window_title, fullscreen)

# Limit frames per second
tcod.sys_set_fps(LIMIT_FPS)

# Game loop
while not tcod.console_is_window_closed():
    tcod.console_set_default_foreground(0, tcod.white)
    tcod.console_put_char(0, 1, 1, '@', tcod.BKGND_NONE)
    tcod.console_flush()

Moving around

import libtcodpy as libtcod

#actual size of the window
SCREEN_WIDTH = 80
SCREEN_HEIGHT = 50

LIMIT_FPS = 20  #20 frames-per-second maximum


def handle_keys():
    global playerx, playery
    
    #key = libtcod.console_check_for_keypress()  #real-time
    key = libtcod.console_wait_for_keypress(True)  #turn-based
    
    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 True  #exit game
    
    #movement keys
    if libtcod.console_is_key_pressed(libtcod.KEY_UP):
        playery -= 1
        
    elif libtcod.console_is_key_pressed(libtcod.KEY_DOWN):
        playery += 1
        
    elif libtcod.console_is_key_pressed(libtcod.KEY_LEFT):
        playerx -= 1
        
    elif libtcod.console_is_key_pressed(libtcod.KEY_RIGHT):
        playerx += 1


#############################################
# 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)

playerx = SCREEN_WIDTH/2
playery = SCREEN_HEIGHT/2

while not libtcod.console_is_window_closed():
    
    libtcod.console_set_default_foreground(0, libtcod.white)
    libtcod.console_put_char(0, playerx, playery, '@', libtcod.BKGND_NONE)
    
    libtcod.console_flush()
    
    libtcod.console_put_char(0, playerx, playery, ' ', libtcod.BKGND_NONE)
    
    #handle keys and exit game if needed
    exit = handle_keys()
    if exit:
        break