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random-stuff/computercraft/retina-scan-door.lua

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Lua
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2023-11-13 19:37:05 +00:00
local other_monitor
repeat
other_monitor = peripheral.wrap "monitor_5213"
until other_monitor
local integrators = {}
for i = 937, 942 do
table.insert(integrators, peripheral.wrap("redstone_integrator_" .. i))
end
local big_screen = peripheral.wrap "left"
local sensor = peripheral.wrap "right"
local screen_center = vector.new(1, 0, 0.5)
local trusted = {
gollark = true,
heav_ = true,
["6_4"] = true
}
local targets = {}
local function center(text)
local w, h = term.getSize()
local x, y = term.getCursorPos()
local start = (w-#text)/2
term.setCursorPos(start, y)
term.write(text)
end
local function redraw()
big_screen.setTextScale(0.5)
local orig = term.redirect(big_screen)
term.setCursorPos(1, 4)
term.setTextColor(colors.white)
term.setBackgroundColor(colors.black)
term.clear()
center "Initiative Sigma Conference Room"
term.setCursorPos(1, 5)
center "Restricted Area"
term.setCursorPos(1, 6)
center "Retina Scan Required"
term.setCursorPos(1, 1)
term.redirect(orig)
end
redraw()
local function set_state(state)
for _, i in pairs(integrators) do
i.setOutput("west", state)
i.setOutput("east", state)
end
end
local function scan()
local nearby = sensor.sense()
local ret = {}
for k, v in pairs(nearby) do
v.s = vector.new(v.x, v.y, v.z)
v.v = vector.new(v.motionX, v.motionY, v.motionZ)
v.distance = v.s:length()
if v.displayName == v.name then ret[v.name] = v end
end
return ret
end
local function angles_to_axis(yaw, pitch)
return vector.new(
-math.sin(math.rad(yaw)) * math.cos(math.rad(pitch)),
-math.sin(math.rad(pitch)),
math.cos(math.rad(yaw)) * math.cos(math.rad(pitch))
)
end
local function vector_sqlength(self)
return self.x * self.x + self.y * self.y + self.z * self.z
end
local function project(line_start, line_dir, point)
local t = (point - line_start):dot(line_dir) / vector_sqlength(line_dir)
return line_start + line_dir * t, t
end
set_state(false)
local function display_animation()
local orig = term.redirect(big_screen)
for y = 1, select(2, term.getSize()) do
term.setBackgroundColor(colors.black)
term.clear()
term.setCursorPos(1, y)
term.setBackgroundColor(colors.red)
term.clearLine()
sleep(0.1)
end
term.redirect(orig)
end
local function is_looking_at_screen(p)
local closest_point, t = project(p.s, angles_to_axis(p.yaw, p.pitch), screen_center)
local dist = (closest_point - screen_center):length()
return p.distance < 5 and dist < 0.6
end
local function retina_scan()
while true do
local nearby = scan()
for _, p in pairs(nearby) do
if is_looking_at_screen(p) then
display_animation()
print(p.name)
local new_scan = scan()
if trusted[p.name] and new_scan[p.name] and is_looking_at_screen(new_scan[p.name]) then
print "opening"
set_state(true)
end
redraw()
sleep(2)
set_state(false)
end
end
sleep(0.1)
end
end
local function inner_door()
local orig = term.redirect(other_monitor)
term.setTextColor(colors.white)
term.setBackgroundColor(colors.black)
term.clear()
term.setCursorPos(1, 3)
center " Press to exit"
term.redirect(orig)
while true do
local ev, side = os.pullEvent "monitor_touch"
if side == peripheral.getName(other_monitor) then
print "opening from inside"
set_state(true)
sleep(2)
set_state(false)
end
end
end
parallel.waitForAll(inner_door, retina_scan)