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require "curses"
curses.initscr();
curses.start_color();
curses.setup_term{nl = false, cbreak = true, echo = false, keypad = true}
local colors = {"black", "green", "red", "cyan", "white", "magenta", "blue", "yellow"}
for _, color in ipairs(colors) do
curses.init_pair(color, color)
end
local x, y = 0, 0
local maxy, maxx = curses.getmaxyx()
while true do
local c = curses.getch()
if c == "left" and x > 0 then
x = x - 1
elseif c == "right" and x < maxx - 1 then
x = x + 1
elseif c == "up" and y > 0 then
y = y - 1
elseif c == "down" and y < maxy - 1 then
y = y + 1
elseif #c == 1 then
curses.addch(c, {color = colors[math.random(#colors)]})
end
curses.move(y, x)
end
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