Lua code to read player data from StreetFighter II Turbo for SNES via BizHawk's Lua environment. Contains some bugs!

buggy_sf2.lua

json = require "json"

function get_framecount()
  return emu.framecount()
end

function get_p1_health()
  return mainmemory.read_u8(0x000530)
end

function get_p2_health()
  return mainmemory.read_u8(0x000730)
end

function get_p1_character()
  return mainmemory.read_u8(0x0005D1)
end

function get_p2_character()
  return mainmemory.read_u8(0x0007D1)
end

function get_p1_x()
  return mainmemory.read_u16_le(0x000022)
end

function get_p2_x()
  return mainmemory.read_u16_le(0x000026)
end

function get_p1_y()
  return mainmemory.read_u8(0x00050A)
end

function get_p2_y()
  return mainmemory.read_u8(0x00070A)
end

function is_p1_jumping()
  return mainmemory.read_u8(0x0005EA) == 1
end

function is_p2_jumping()
  return mainmemory.read_u8(0x0007EA) == 1
end

function p_height_delta()
  return mainmemory.read_u8(0x0005ED)
end

function is_p1_crouching()
  return mainmemory.read_u8(0x000544) == 1
end

function is_p2_crouching()
  return mainmemory.read_u8(0x00744) == 1
end

function get_timer()
  return mainmemory.read_u8(0x0018F3)
end

function is_round_started()
  return get_timer() > 0 and get_timer() <= 152
end

function is_round_over()
  return get_p1_health()==255 or get_p2_health()==255 or get_timer() <= 0
end

function get_round_result()
  if get_p1_health()==255 then
    return "P2"
  elseif get_p2_health()==255 then
    return "P1"
  else
    return "NOT_OVER"
  end
end

function get_p1_buttons()
  return joypad.get(1)
end

function get_p2_buttons()
  return joypad.get(2)
end

function get_json_state()
  return json.encode({frame = get_framecount(), timer = get_timer(), result = get_round_result(), round_started = is_round_started(), round_over = is_round_over(),
         p1 = {
           character = get_p1_character(),
           health = get_p1_health(),
           x = get_p1_x(),
           y = get_p1_y(),
           jumping = is_p1_jumping(),
           crouching = is_p1_crouching(),
           buttons = get_p1_buttons()
          },
         p2 = {
           character = get_p2_character(),
           health = get_p2_health(),
           x = get_p2_x(),
           y = get_p2_y(),
           jumping = is_p2_jumping(),
           crouching = is_p2_crouching(),
           buttons = get_p2_buttons()
          },
        height_delta = p_height_delta()
       })
 end