local buttonCount = 20
local cameraCount = 18

function onLoad(saved_data)
  self.createButton({
    label = "",
    tooltip = "Display full overlay",
    click_function = "displayFull",
    function_owner = self,
    position = { 0.0, 0.1, -0.63 },
    height = 70,
    width = 700,
    scale = { x = 1, y = 1, z = 1 },
    color = { 1, 0, 0, 0 }
  })
  self.createButton({
    label = "",
    tooltip = "Display only play area",
    click_function = "displayPlayArea",
    function_owner = self,
    position = { 0.0, 0.1, -0.39 },
    height = 70,
    width = 700,
    scale = { x = 1, y = 1, z = 1 },
    color = { 1, 0, 0, 0 }
  })
  self.createButton({
    label = "",
    tooltip = "Close overlay",
    click_function = "closeOverlay",
    function_owner = self,
    position = { 0.0, 0.1, -0.16 },
    height = 70,
    width = 700,
    scale = { x = 1, y = 1, z = 1 },
    color = { 1, 0, 0, 0 }
  })
  self.createButton({
    label = "",
    tooltip = "Modify a camera position",
    click_function = "beginSetCamera",
    function_owner = self,
    position = { 0.0, 0.1, 0.19 },
    height = 70,
    width = 700,
    scale = { x = 1, y = 1, z = 1 },
    color = { 1, 0, 0, 0 }
  })
  self.createButton({
    label = "",
    tooltip = "Claim a color (you will switch to this color when clicking in the overlay)",
    click_function = "beginClaimColor",
    function_owner = self,
    position = { -0.22, 0.1, 0.42 },
    height = 70,
    width = 475,
    scale = { x = 1, y = 1, z = 1 },
    color = { 1, 0, 0, 0 }
  })
  self.createButton({
    label = "",
    tooltip = "Reset all color claims",
    click_function = "resetClaimColors",
    function_owner = self,
    position = { 0.48, 0.1, 0.42 },
    height = 70,
    width = 230,
    scale = { x = 1, y = 1, z = 1 },
    color = { 1, 0, 0, 0 }
  })
  self.createButton({
    label = "",
    tooltip = "Reset camera positions to default",
    click_function = "resetCameras",
    function_owner = self,
    position = { 0.0, 0.1, 0.78 },
    height = 70,
    width = 700,
    scale = { x = 1, y = 1, z = 1 },
    color = { 1, 0, 0, 0 }
  })

  defaultCameraParams = {
    { position = { -1.626, -2.5, 0 },         pitch = 74, yaw = 90,  distance = 17.844 }, --  1. ActAgenda
    { position = { -27.822, -2.5, 0.424 },    pitch = 74, yaw = 90,  distance = -1 },     --  2. Map
    { position = { -31.592, -2.5, 26.392 },   pitch = 74, yaw = 180, distance = -1 },     --  3. Green playmat
    { position = { -55.026, -2.5, 12.052 },   pitch = 74, yaw = 90,  distance = -1 },     --  4. White playmat
    { position = { -55.026, -2.5, -11.479 },  pitch = 74, yaw = 90,  distance = -1 },     --  5. Orange playmat
    { position = { -31.592, -2.5, -26.392 },  pitch = 74, yaw = 0,   distance = -1 },     --  6. Red playmat
    { position = { -3.029, 1.652, 24.296 },   pitch = 74, yaw = 90,  distance = 16 },     --  7. Victory / SetAside
    { position = { -2.936, 1.552, -26.757 },  pitch = 74, yaw = 90,  distance = 16 },     --  8. Guide
    { position = { -11.833, 1.491, -0.145 },  pitch = 74, yaw = 90,  distance = 10 },     --  9. Player count
    { position = { -48.352, 1.552, -0.055 },  pitch = 74, yaw = 90,  distance = 10 },     -- 10. Bless/Curse
    { position = { 12.560, 1.912, 0.458 },    pitch = 74, yaw = 90,  distance = 35 },     -- 11. Scenarios
    { position = { 57.835, 1.552, 75.385 },   pitch = 74, yaw = 90,  distance = 22 },     -- 12. Player card panel
    { position = { 60.377, 1.552, 55.941 },   pitch = 74, yaw = 90,  distance = 10 },     -- 13. Card search panel
    { position = { 27.482, 1.480, 71.057 },   pitch = 74, yaw = 90,  distance = 35 },     -- 14. Player card area
    { position = { -19.481, 1.552, 70.880 },  pitch = 74, yaw = 90,  distance = 22 },     -- 15. Deck builder
    { position = { -52.918, 1.478, 70.899 },  pitch = 74, yaw = 90,  distance = 42 },     -- 16. Rules area
    { position = { 24.551, 2.222, -71.284 },  pitch = 60, yaw = 90,  distance = 60 },     -- 17. Cycle area
    { position = { -59.077, 1.462, -85.472 }, pitch = 74, yaw = 90,  distance = 27 }      -- 18. Additions
  }

  fullButtonData = {
    { id = "1",  width = "84",  height = "33",  offsetX = "1",    offsetY = "2" },    -- Act/Agenda
    { id = "2",  width = "78",  height = "69",  offsetX = "1",    offsetY = "-62" },  -- Map
    { id = "3",  width = "36",  height = "70",  offsetX = "-62",  offsetY = "-66" },  -- Green
    { id = "4",  width = "70",  height = "36",  offsetX = "-36",  offsetY = "-126" }, -- White
    { id = "5",  width = "70",  height = "36",  offsetX = "39",   offsetY = "-126" }, -- Orange
    { id = "6",  width = "36",  height = "70",  offsetX = "64",   offsetY = "-66" },  -- Red
    { id = "7",  width = "38",  height = "38",  offsetX = "-64",  offsetY = "-3" },   -- Victory
    { id = "8",  width = "40",  height = "40",  offsetX = "66",   offsetY = "-3" },   -- Guide
    { id = "9",  width = "56",  height = "16",  offsetX = "1",    offsetY = "-20" },  -- Player count
    { id = "10", width = "36",  height = "16",  offsetX = "1",    offsetY = "-102" }, -- Bless/Curse
    { id = "11", width = "168", height = "56",  offsetX = "1",    offsetY = "47" },   -- Scenarios
    { id = "12", width = "52",  height = "53",  offsetX = "-154", offsetY = "134" },  -- Player card panel
    { id = "13", width = "22",  height = "22",  offsetX = "-116", offsetY = "132" },  -- Search card panel
    { id = "14", width = "120", height = "75",  offsetX = "-152", offsetY = "70" },   -- Player card display
    { id = "15", width = "40",  height = "54",  offsetX = "-150", offsetY = "-38" },  -- Deck builder
    { id = "16", width = "104", height = "84",  offsetX = "-154", offsetY = "-114" }, -- Rules area
    { id = "17", width = "100", height = "170", offsetX = "152",  offsetY = "72" },   -- Cycle area
    { id = "18", width = "56",  height = "60",  offsetX = "182",  offsetY = "-124" }, -- Additions
    { id = "19", width = "20",  height = "20",  offsetX = "-8",   offsetY = "150" },  -- Shrink
    { id = "20", width = "20",  height = "20",  offsetX = "12",   offsetY = "150" }   -- Close
  }

  playButtonData = {
    { id = "1",  width = "80", height = "33", offsetX = "0",   offsetY = "55" },
    { id = "2",  width = "78", height = "70", offsetX = "0",   offsetY = "-8" },
    { id = "3",  width = "35", height = "66", offsetX = "-65", offsetY = "-10" },
    { id = "4",  width = "68", height = "32", offsetX = "-36", offsetY = "-71" },
    { id = "5",  width = "68", height = "32", offsetX = "36",  offsetY = "-71" },
    { id = "6",  width = "35", height = "66", offsetX = "65",  offsetY = "-10" },
    { id = "7",  width = "38", height = "38", offsetX = "-66", offsetY = "52" },
    { id = "8",  width = "38", height = "38", offsetX = "66",  offsetY = "52" },
    { id = "9",  width = "50", height = "12", offsetX = "0",   offsetY = "33" },
    { id = "10", width = "32", height = "12", offsetX = "0",   offsetY = "-48" },
    { id = "19", width = "20", height = "20", offsetX = "-10", offsetY = "80" },
    { id = "20", width = "20", height = "20", offsetX = "10",  offsetY = "80" }
  }

  playermatData = {
    {
      guid = '383d8b',
      origin = { x = -25.00, y = 0, z = 26.20 },
      scale = { x = 31.5, y = 5.10, z = 14.59 },
      orientation = { x = 0, y = 0, z = 0 },
      minX = -44.43,
      maxX = -17.44,
      minZ = 20.17,
      maxZ = 32.97,
      xOffset = -0.07,
      zOffset = 0.00,
      claims = { true, false, false, false }
    },
    {
      guid = '8b081b',
      origin = { x = -54.42, y = 0, z = 20.96 },
      scale = { x = 36.63, y = 5.10, z = 14.59 },
      orientation = { x = 0, y = 270, z = 0 },
      minX = -61.4,
      maxX = -48.6,
      minZ = -2.39,
      maxZ = 24.53,
      xOffset = 0.07,
      zOffset = 0.03,
      claims = { false, true, false, false }
    },
    {
      guid = 'bd0ff4',
      origin = { x = -54.42, y = 0, z = -20.96 },
      scale = { x = 36.63, y = 5.10, z = 14.59 },
      orientation = { x = 0, y = 270, z = 0 },
      minX = -61.4,
      maxX = -48.6,
      minZ = -24.53,
      maxZ = 2.39,
      xOffset = 0.07,
      zOffset = 0.02,
      claims = { false, false, true, false }
    },
    {
      guid = '0840d5',
      origin = { x = -25.00, y = 0, z = -26.60 },
      scale = { x = 31.5, y = 5.10, z = 14.59 },
      orientation = { x = 0, y = 180, z = 0 },
      minX = -44.43,
      maxX = -17.44,
      minZ = -32.97,
      maxZ = -20.17,
      xOffset = 0.07,
      zOffset = -0.06,
      claims = { false, false, false, true }
    }
  }

  editing = false
  claiming = false
  selectedEditButton = -1
  editPos = { 0, 0, 0 }
  editPitch = 0
  editYaw = 0
  editDistance = 0

  if saved_data ~= "" then
    local loaded_data = JSON.decode(saved_data)
    cameraParams = loaded_data.cameras
    fullVisibility = loaded_data.fullVis
    playVisibility = loaded_data.playVis

    local allclaims = loaded_data.claims
    for i = 1, 4 do
      playermatData[i].claims = allclaims[i]
    end

    resetOverlay()
  else
    cameraParams = { {}, {}, {}, {} }

    for cam = 1, 4 do
      cameraParams[cam] = {}

      for i = 1, cameraCount do
        cameraParams[cam][i] = {}
        cameraParams[cam][i].position = defaultCameraParams[i].position
        cameraParams[cam][i].pitch = defaultCameraParams[i].pitch
        cameraParams[cam][i].yaw = defaultCameraParams[i].yaw
        cameraParams[cam][i].distance = defaultCameraParams[i].distance
      end
    end

    fullVisibility = { false, false, false, false }
    playVisibility = { false, false, false, false }
  end
end

function onSave()
  local allclaims = {}

  for i = 1, 4 do
    table.insert(allclaims, playermatData[i].claims)
  end

  return JSON.encode({
    cameras = cameraParams,
    fullVis = fullVisibility,
    playVis = playVisibility,
    claims = allclaims
  })
end

function displayFull(object, color)
  local playerCount = getPlayerCount()
  local colors

  if playerCount == 0 then
    return
  elseif playerCount == 1 then
    colors = { 1, 2, 3, 4 }
  else
    colors = { getIndexForPlayerColor(color) }
  end

  for i, v in ipairs(colors) do
    if v > 0 then
      fullVisibility[v] = true
      playVisibility[v] = false
    end
  end

  resetOverlay()
end

function displayPlayArea(object, color)
  local playerCount = getPlayerCount()
  local colors

  if playerCount == 0 then
    return
  elseif playerCount == 1 then
    colors = { 1, 2, 3, 4 }
  else
    colors = { getIndexForPlayerColor(color) }
  end

  for _, v in ipairs(colors) do
    if v > 0 then
      fullVisibility[v] = false
      playVisibility[v] = true
    end
  end

  resetOverlay()
end

function resetCameras(object, color)
  local playerCount = getPlayerCount()
  local colors

  if playerCount == 0 then
    return
  elseif playerCount == 1 then
    colors = { 1, 2, 3, 4 }
  else
    colors = { getIndexForPlayerColor(color) }
  end

  for iv, v in ipairs(colors) do
    if v > 0 then
      for i = 1, cameraCount do
        cameraParams[v][i].position = defaultCameraParams[i].position
        cameraParams[v][i].pitch = defaultCameraParams[i].pitch
        cameraParams[v][i].yaw = defaultCameraParams[i].yaw
        cameraParams[v][i].distance = defaultCameraParams[i].distance
      end
    end
  end
end

function closeOverlay(object, color)
  local playerCount = getPlayerCount()
  local colors

  editing = false
  claiming = false

  if playerCount == 0 then
    return
  elseif playerCount == 1 then
    colors = { 1, 2, 3, 4 }
  else
    colors = { getIndexForPlayerColor(color) }
  end

  for _, v in ipairs(colors) do
    if v > 0 then
      fullVisibility[v] = false
      playVisibility[v] = false
    end
  end

  resetOverlay()
end

function resizeOverlay(object, color)
  local playerCount = getPlayerCount()
  local colors

  if playerCount == 0 then
    return
  elseif playerCount == 1 then
    colors = { 1, 2, 3, 4 }
  else
    colors = { getIndexForPlayerColor(color) }
  end

  for _, v in ipairs(colors) do
    if v > 0 then
      local full = fullVisibility[v]
      fullVisibility[v] = not full
      playVisibility[v] = full
    end
  end

  resetOverlay()
end

function resetOverlay()
  local guid = self.getGUID()
  local color
  local panel
  local existingXml = UI.getXml()
  local openingXml = ''

  -- try to only remove our panels
  for p = 1, 2 do
    i, j = string.find(existingXml, '<Panel id="navPanel')

    if i and i > 1 and string.len(openingXml) == 0 then
      openingXml = string.sub(existingXml, 1, i - 1)
    end

    if i then
      local panelXml = string.sub(existingXml, i)
      k, m = string.find(panelXml, '</Panel>')

      existingXml = string.sub(panelXml, m + 1)
    else
      break
    end
  end

  local xml = openingXml .. [[
    ]] .. existingXml

  local fullColors = ''
  local playColors = ''

  for i, v in pairs(fullVisibility) do
    if v == true then
      local matColor = getPlayerColorForIndex(i)
      if string.len(fullColors) > 0 and matColor ~= nil then
        fullColors = fullColors .. '|' .. matColor
      elseif matColor ~= nil then
        fullColors = matColor
      end
    end
  end

  for i, v in pairs(playVisibility) do
    if v == true then
      local matColor = getPlayerColorForIndex(i)
      if string.len(playColors) > 0 and matColor ~= nil then
        playColors = playColors .. '|' .. matColor
      elseif matColor ~= nil then
        playColors = matColor
      end
    end
  end

  if string.len(fullColors) > 0 then
    data = fullButtonData

    xml = xml ..
        [[<Panel id="navPanelFull" height="358" width="455" visibility="]] ..
        fullColors ..
        [[" allowDragging="true" returnToOriginalPositionWhenReleased="false" rectAlignment="LowerRight" offsetXY="-40 0">
            <image id="backgroundImage" image="OverlayLarge" />]]

    for _, d in ipairs(data) do
      local buttonID = tonumber(d.id)

      if editing and buttonID < 19 then
        if selectedEditButton < 0 then
          color = "rgba(1,1,1,1)"
        elseif buttonID == selectedEditButton then
          color = "rgba(0,1,0,1)"
        else
          color = "rgba(1,0,0,1)"
        end
      elseif claiming and buttonID < 19 then
        if buttonID >= 3 and buttonID <= 6 then
          color = "rgba(1,1,1,1)"
        else
          color = "rgba(1,0,0,1)"
        end
      else
        color = "rgba(0,1,0,0)"
      end

      xml = xml .. [[<button
                onClick="]] .. guid .. [[/buttonClicked"
                id="]] .. d.id .. [["
                height="]] .. d.height .. [["
                width="]] .. d.width .. [["
                offsetXY="]] .. d.offsetX .. " " .. d.offsetY .. [["
                color="]] .. color .. [["
            >
            </button>
            ]]
    end

    xml = xml .. [[    </Panel>]]
  end

  if string.len(playColors) > 0 then
    data = playButtonData

    xml = xml .. [[
        <Panel id="navPanelPlay" height="208" width="205" visibility="]] ..
        playColors ..
        [[" allowDragging="true" returnToOriginalPositionWhenReleased="false" rectAlignment="LowerRight" offsetXY="-40 0">
            <image id="backgroundImage" image="OverlaySmall" />]]

    for _, d in ipairs(data) do
      local buttonID = tonumber(d.id)

      if editing and buttonID < 19 then
        if selectedEditButton < 0 then
          color = "rgba(1,1,1,1)"
        elseif buttonID == selectedEditButton then
          color = "rgba(0,1,0,1)"
        else
          color = "rgba(1,0,0,1)"
        end
      elseif claiming and buttonID < 19 then
        if buttonID >= 3 and buttonID <= 6 then
          color = "rgba(1,1,1,1)"
        else
          color = "rgba(1,0,0,1)"
        end
      else
        color = "rgba(0,1,0,0)"
      end

      xml = xml .. [[<button
                onClick="]] .. guid .. [[/buttonClicked"
                id="]] .. d.id .. [["
                height="]] .. d.height .. [["
                width="]] .. d.width .. [["
                offsetXY="]] .. d.offsetX .. " " .. d.offsetY .. [["
                color="]] .. color .. [["
            >
            </button>
            ]]
    end

    xml = xml .. [[    </Panel>]]
  end

  local existingAssets = UI.getCustomAssets()
  local largeOverlay = nil
  local smallOverlay = nil

  for _, v in pairs(existingAssets) do
    for _, vv in pairs(v) do
      if vv == 'OverlayLarge' then
        largeOverlay = v
      end
      if vv == 'OverlaySmall' then
        smallOverlay = v
      end
    end
  end

  local largeURL = 'http://cloud-3.steamusercontent.com/ugc/2021591230441678995/7B413A821136969D8723687A2AD66773B3F8FEED/'
  local smallURL = 'http://cloud-3.steamusercontent.com/ugc/2021591230447630077/18C86248B9BDAF1DE01B67791439A39EE4F97B60/'

  if largeOverlay == nil then
    largeOverlay = { name = 'OverlayLarge', url = largeURL }
    table.insert(existingAssets, largeOverlay)
  else
    largeOverlay.url = largeURL
  end

  if smallOverlay == nil then
    smallOverlay = { name = 'OverlaySmall', url = smallURL }
    table.insert(existingAssets, smallOverlay)
  else
    smallOverlay.url = smallURL
  end

  UI.setXml(xml, existingAssets)
end

function buttonClicked(player, _, idValue)
  local buttonID = tonumber(idValue)

  if buttonID == 19 then
    resizeOverlay(nil, player.color)
    return
  elseif buttonID == 20 then
    closeOverlay(nil, player.color)
    return
  end

  if editing then
    if selectedEditButton < 0 then
      selectedEditButton = buttonID
    else
      if buttonID == selectedEditButton and editDistance > 0 then
        local playerCount = getPlayerCount()
        local colors

        if playerCount == 1 then
          colors = { 1, 2, 3, 4 }
        else
          colors = { getIndexForPlayerColor(player.color) }
        end

        for i, v in ipairs(colors) do
          cameraParams[v][selectedEditButton].position = editPos
          cameraParams[v][selectedEditButton].pitch = editPitch
          cameraParams[v][selectedEditButton].yaw = editYaw
          cameraParams[v][selectedEditButton].distance = editDistance
        end
      end

      editing = false
      selectedEditButton = -1
    end

    resetOverlay()
  elseif claiming then
    if buttonID >= 3 and buttonID <= 6 then
      local colorID = buttonID - 2
      local playerIndex = getIndexForPlayerColor(player.color)

      -- if we haven't claimed it, break all earlier claims
      if playermatData[playerIndex].claims[colorID] == false then
        for i = 1, 4 do
          if i ~= colorID then
            playermatData[i].claims[colorID] = false
            playermatData[colorID].claims[i] = false
          end
        end
      end

      for i = 1, 4 do
        if playermatData[playerIndex].claims[i] then
          playermatData[i].claims[colorID] = true
          playermatData[colorID].claims[i] = true
        end
      end

      fullVisibility[colorID] = fullVisibility[playerIndex]
      playVisibility[colorID] = playVisibility[playerIndex]
    end

    claiming = false
    resetOverlay()
  else
    loadCamera(player, _, idValue)
  end
end

function loadCamera(player, _, idValue)
  local index = tonumber(idValue)
  local playerColor = player.color
  local playerIndex = getIndexForPlayerColor(playerColor)

  -- only do map zooming if the camera hasn't been specially set by user
  if index == 2 and cameraParams[playerIndex][index].distance <= 0.0 then
    local mapObjects = Physics.cast({
      origin = { x = -29.2, y = 0, z = 0.0 },
      direction = { x = 0, y = 1, z = 0 },
      type = 3,
      size = { x = 36, y = 5, z = 31.4 },
      orientation = { x = 0, y = 90, z = 0 }
    })

    local minX = 100
    local maxX = -100
    local minZ = 100
    local maxZ = -100

    for _, v in pairs(mapObjects) do
      local obj = v.hit_object

      if obj.type == 'Card' or obj.type == 'Infinite' then
        local bounds = obj.getBounds()
        local x1 = bounds['center'][1] - bounds['size'][1] / 2
        local x2 = bounds['center'][1] + bounds['size'][1] / 2
        local z1 = bounds['center'][3] - bounds['size'][3] / 2
        local z2 = bounds['center'][3] + bounds['size'][3] / 2

        minX = math.min(x1, minX)
        maxX = math.max(x2, maxX)
        minZ = math.min(z1, minZ)
        maxZ = math.max(z2, maxZ)
      end
    end

    if minX < 100 then
      local dx = maxX - minX
      local dz = (maxZ - minZ) / (1.6)  -- screen ratio * 1.2 (for my macbook pro, no idea how to generalize this)
      local centerX = (minX + maxX) / 2 -- offset is to move it a bit up, so the cards don't block anything
      local centerZ = (minZ + maxZ) / 2
      local scale = math.max(dx, dz)

      -- regression line from the following data points, seems linear
      -- rows 1 scale 4.5   d 12
      -- rows 2 scale 11    d 16
      -- rows 3 scale 14.5  d 19.6
      -- rows 4 scale 19.6  d 25
      -- rows 5 scale 23.25 d 28
      -- rows 6 scale 30.8  d 34

      -- modified by testing
      local d = 0.96 * scale + 5
      player.lookAt({ position = { centerX, 0, centerZ }, pitch = 74, yaw = 90, distance = d })
    else
      player.lookAt({ position = { -30.667, 0, 0 }, pitch = 74, yaw = 90, distance = 32 })
    end
  elseif index >= 3 and index <= 6 then
    local newMatIndex = index - 2 -- mat index 1 - 4
    local newMatColor = getPlayerColorForIndex(newMatIndex)

    if newMatColor ~= nil then
      local playerCount = getPlayerCount()

      if playerCount <= 1 or playermatData[playerIndex].claims[newMatIndex] then
        player.changeColor(newMatColor)
      end
    end

    if cameraParams[newMatIndex][index].distance <= 0.0 then
      local matObjects = Physics.cast({
        origin = playermatData[newMatIndex].origin,
        direction = { x = 0, y = 1, z = 0 },
        type = 3,
        size = playermatData[newMatIndex].scale,
        orientation = playermatData[newMatIndex].orientation
      })

      local minX = playermatData[newMatIndex].minX
      local maxX = playermatData[newMatIndex].maxX
      local minZ = playermatData[newMatIndex].minZ
      local maxZ = playermatData[newMatIndex].maxZ

      for i, v in pairs(matObjects) do
        local obj = v.hit_object
        if obj.type == 'Card' or obj.type == 'Infinite' then
          local bounds = obj.getBounds()
          local x1 = bounds['center'][1] - bounds['size'][1] / 2
          local x2 = bounds['center'][1] + bounds['size'][1] / 2
          local z1 = bounds['center'][3] - bounds['size'][3] / 2
          local z2 = bounds['center'][3] + bounds['size'][3] / 2

          minX = math.min(x1, minX)
          maxX = math.max(x2, maxX)
          minZ = math.min(z1, minZ)
          maxZ = math.max(z2, maxZ)
        end
      end

      local dx, dz, centerX, centerZ, yaw

      -- White/Orange
      if index > 3 and index < 6 then
        dx = maxX - minX
        dz = (maxZ - minZ) / 1.6 -- screen ratio * 1.2 (for my macbook pro, no idea how to generalize this)
        yaw = 90

        -- offset is to move it a bit up and right, so the cards/toolbar don't block anything
        centerX = (minX + maxX) / 2 - dx * playermatData[newMatIndex].xOffset
        centerZ = (minZ + maxZ) / 2 + dz * playermatData[newMatIndex].zOffset
      -- Green/Red
      else                       
        dx = (maxX - minX) / 1.6
        dz = maxZ - minZ
        yaw = playermatData[newMatIndex].orientation.y + 180
        centerX = (minX + maxX) / 2 + dx * playermatData[newMatIndex].zOffset
        centerZ = (minZ + maxZ) / 2 - dz * playermatData[newMatIndex].xOffset
      end

      local scale = math.max(dx, dz)
      local d = 0.64 * scale + 7

      -- need to wait if the player color changed
      Wait.frames(function()
        player.lookAt({ position = { centerX, 0, centerZ }, pitch = 75.823, yaw = yaw, distance = d })
      end, 2)
    else
      Wait.frames(function()
        player.lookAt(cameraParams[newMatIndex][index])
      end, 2)
    end
  else
    player.lookAt(cameraParams[playerIndex][index])
  end
end

function beginSetCamera(object, color)
  if getPlayerCount() == 0 then
    return
  elseif getIndexForPlayerColor(color) < 0 then
    return
  end

  editing = true
  resetOverlay()
end

function updateEditCamera(params)
  editPos = params[1]
  editPitch = params[2]
  editYaw = params[3]
  editDistance = params[4]
end

function beginClaimColor(object, color)
  if getPlayerCount() == 0 then
    return
  elseif getIndexForPlayerColor(color) < 0 then
    return
  end

  claiming = true
  resetOverlay()
end

function resetClaimColors(object, color)
  if getPlayerCount() == 0 then
    return
  elseif getIndexForPlayerColor(color) < 0 then
    return
  end

  for c1 = 1, 4 do
    for c2 = 1, 4 do
      if c1 == c2 then
        playermatData[c1].claims[c2] = true
      else
        playermatData[c1].claims[c2] = false
      end
    end
  end
end

function getPlayerCount()
  local playerCount = 0
  local playerColors = {}

  for i = 1, 4 do
    local guid = playermatData[i].guid
    local mat = getObjectFromGUID(guid)
    local color = mat.getVar('playerColor')
    playerColors[i] = color
  end

  local playerList = getSeatedPlayers()

  for i, v in ipairs(playerList) do
    for ii, vv in ipairs(playerColors) do
      if v == vv then
        playerCount = playerCount + 1
      end
    end
  end

  return playerCount
end

function getPlayerColorForIndex(index)
  if index < 0 or index > 4 then
    return nil
  end

  local guid = playermatData[index]['guid']
  if guid ~= nil then
    local mat = getObjectFromGUID(guid)
    return mat.getVar("playerColor")
  end
end

function getIndexForPlayerColor(color)
  for i = 1, 4 do
    local mat = getObjectFromGUID(playermatData[i].guid)
    if mat ~= nil then
      if mat.getVar('playerColor') == color then
        return i
      end
    end
  end

  return -1
end