From c9e803216ff08d82050bd5c6cfca8a5d2f9cc4ca Mon Sep 17 00:00:00 2001
From: Tangent <rose@tangentfox.com>
Date: Thu, 27 Nov 2025 23:11:14 -0700
Subject: [PATCH] tried toy flightmodel and that does not work either

---
 flightmodel/main.lua | 144 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 flightmodel/main.lua

diff --git a/flightmodel/main.lua b/flightmodel/main.lua
new file mode 100644
index 0000000..d857fe4
--- /dev/null
+++ b/flightmodel/main.lua
@@ -0,0 +1,144 @@
+local screen_width, screen_height = love.graphics.getDimensions()
+
+local function distance(x1, y1, x2, y2)
+  delta_x = x1 - x2
+  delta_y = y1 - y2
+  return math.sqrt(delta_x^2 + delta_y^2)
+end
+
+orbital_speed = 0.0625 * 2500 -- I have no idea what the fuck this means
+local function new_body(orbital_radius, body_radius)
+  local body = {
+    orbital_radius = orbital_radius,
+    body_radius = body_radius,
+    rotation_offset = math.pi * 2 * love.math.random(),
+    color = { love.math.random(), love.math.random(), love.math.random(), 1 },
+  }
+  return body
+end
+
+local function get_body_position(body, time)
+  local argument = time * orbital_speed / body.orbital_radius^1.337 + body.rotation_offset
+  if (argument == math.huge) or (argument ~= argument) then
+    argument = 0
+  end
+  return body.orbital_radius * math.cos(argument), body.orbital_radius * math.sin(argument)
+end
+
+local function draw_body(body, time)
+  local x, y = get_body_position(body, time)
+  love.graphics.setColor(body.color)
+  love.graphics.circle("fill", x, y, body.body_radius)
+  love.graphics.setColor(1, 1, 1, 1) -- TEMP delete this if it works without it
+end
+
+local function new_ship()
+  local ship = {
+    orbital_radius = 0,
+    rotation_offset = 0,
+    x = 30, y = 30,
+    orbiting = false,
+    time_offset = 0,
+    parent = nil,
+  }
+  return ship
+end
+
+local function get_ship_position(ship, time)
+  if ship.orbiting then
+    local x, y
+    if ship.parent then
+      x, y = get_body_position(ship.parent, time) -- WARNING this should work the same for all objects or things will suck
+    else
+      x, y = 0, 0
+    end
+    local argument = (time - ship.time_offset) * orbital_speed / ship.orbital_radius^1.337 + ship.rotation_offset
+    if (argument == math.huge) or (argument ~= argument) then
+      argument = 0
+    end
+    return x + ship.orbital_radius * math.cos(argument), y + ship.orbital_radius * math.sin(argument)
+  else
+    return ship.x, ship.y
+  end
+end
+
+local function draw_ship(ship, time)
+  local x, y = get_ship_position(ship, time)
+  love.graphics.rectangle("line", x - 3, y - 3, 6, 6)
+end
+
+local time = os.time()
+love.math.setRandomSeed(time)
+local speed = 1
+
+local bodies = {}
+table.insert(bodies, new_body(0, 25))
+for i = 1, 1 do -- TEMP only adding 1 secondary body
+  table.insert(bodies, new_body(love.math.random() * 200 + 100, love.math.random() * 4 + 1))
+end
+
+local ship = new_ship()
+-- ship was in bodies table; not currently possible here
+
+local camera = { x = 0, y = 0, }
+function love.update(dt)
+  time = time + dt * speed
+  -- NOTE camera controls 200 * dt
+
+  if not ship.orbiting then
+    if love.keyboard.isDown("w") then
+      ship.y = ship.y - 100 * dt
+    end
+    if love.keyboard.isDown("s") then
+      ship.y = ship.y + 100 * dt
+    end
+    if love.keyboard.isDown("a") then
+      ship.x = ship.x - 100 * dt
+    end
+    if love.keyboard.isDown("d") then
+      ship.x = ship.x + 100 * dt
+    end
+  end
+end
+
+local font_size = love.graphics.getFont():getHeight()
+function love.draw()
+  love.graphics.print("wasd: Move. o: Toggle orbit.", 1, screen_height - (font_size + 1))
+
+  love.graphics.translate(screen_width / 2 - camera.x, screen_height / 2 - camera.y)
+
+  for i = 1, #bodies do
+    local body = bodies[i]
+    draw_body(body, time)
+  end
+  draw_ship(ship, time)
+end
+
+-- TEMP ship is always orbiting body 2
+ship.parent = bodies[2]
+
+function love.keypressed(key)
+  if key == "escape" then
+    love.event.quit()
+  -- NOTE ignoring speed control
+  elseif key == "o" then
+    if ship.orbiting then
+      local x, y = get_ship_position(ship, time)
+      ship.x = x
+      ship.y = y
+      ship.orbiting = false
+    else
+      -- only works with center (fuck)
+      -- ship.orbital_radius = math.sqrt(ship.x^2 + ship.y^2)
+      -- ship.rotation_offset = math.atan2(ship.y, ship.x)
+      -- ship.time_offset = time
+      -- ship.orbiting = true
+
+      local x, y = get_body_position(ship.parent, time)
+      ship.orbital_radius = distance(x, ship.x, y, ship.y)
+      ship.rotation_offset = math.atan2(ship.y - y, ship.x - x)
+      ship.time_offset = time
+      ship.orbiting = true
+    end
+  end
+end