m_CurrentText = nil
m_sCurrentTurn = nil

function onPlayerTurnStart(player_color_start, player_color_previous)
    m_sCurrentTurn = player_color_start
end

function onSave()
    local sGUID = nil
    if m_CurrentText ~= nil then
        sGUID = m_CurrentText.getGUID()
    end
    return JSON.encode({sGUIDtext = sGUID})
end
function onLoad(save_state)
    --Create buttons
    local button_parameters = {}
    button_parameters.rotation = {0.0, 0.0, 0.0}
    button_parameters.width = 900
    button_parameters.height = 320
    button_parameters.function_owner = self

    --Accept Offer button
    button_parameters.position = {-3.06, 0.1, 0.48}
    button_parameters.label = 'Accept Offer'
    button_parameters.click_function = 'respAccept'
    button_parameters.font_size = 150
    self.createButton( button_parameters )

    local SavedData = JSON.decode(save_state)
    if SavedData ~= nil then
        if SavedData.sGUIDtext ~= nil then
            m_CurrentText = getObjectFromGUID(SavedData.sGUIDtext)
        end
    end
end

function respAccept(Board, sPlayer)       displayResponse('I Accept!', sPlayer)                end

function displayResponse(sText, sPlayer)
    --clear old text
    if m_CurrentText ~= nil then
        m_CurrentText.destruct()
    end

    --spawn new response text
    local vPos = self.getPosition()
    --orient the text according to the orientation of the board
    local vRot = {90.0, 180 + self.getRotation().y, 0.0} --yeah, I think this is weird too
    if vRot[2] > 360.0 then
        vRot[2] = vRot[2] - 360.0
    end

    --rotate the text towards the active player -> see if we have to flip it to make it better readable for the active player
    local bFlip = false
    if m_sCurrentTurn ~= nil then
        local fRotationDiff = Player[m_sCurrentTurn].getPlayerHand().rot_y - self.getRotation()[2]
        if fRotationDiff < 0 then
            fRotationDiff = 360.0 + fRotationDiff
        end
        if fRotationDiff > 270.0 or fRotationDiff < 90.0 then
            bFlip = true
        end
    end

    --position the text above the board
    local fR = math.rad(vRot[2])
    local fSpace = 3.5

    if bFlip then
        vRot[2] = vRot[2] + 180.0
        fSpace = 2.2
    end

    vPos.x = vPos.x + (math.sin(fR) * fSpace)
    vPos.y = vPos.y + 0.2 --lift the text so it will not be covered by anything on the board
    vPos.z = vPos.z + (math.cos(fR) * fSpace)

    local params = {
        type = '3DText',
        position = vPos,
        rotation = vRot, --neither this nor setRotation/setRotationSmooth works ... only .rotate?!
        callback_owner = self,
        callback = 'newTextCallback',
        params = {  sText = sText,
                    sPlayer = sPlayer,
                    iFontSize = 110,
                    vRotation = vRot
                }
    }
    m_CurrentText = spawnObject(params)

end

--[[ This actually is needed because rotating a text is super weird. It only works in the callback of the object with the text tool ]]--
function newTextCallback(TextObj, p)
    TextObj.TextTool.setValue(p.sText)
    TextObj.TextTool.setFontColor(getColor(p.sPlayer))
    TextObj.TextTool.setFontSize(p.iFontSize)
    TextObj.setRotation(p.vRotation)
end

function clearText()
    if m_CurrentText ~= nil then
        m_CurrentText.destruct()
    end
end

function getColor(sPlayer)
    if sPlayer == 'Orange' then
        return {['r']=1.0, ['g']=0.544700563, ['b']=0.188231677}
    elseif sPlayer == 'Red' then
        return {['r']=0.7921569, ['g']=0.0, ['b']=0.0}
    elseif sPlayer == 'White' then
        return {['r']=0.99649936, ['g']=1.0, ['b']=0.996506333}
    elseif sPlayer == 'Purple' then
        return {['r']=0.5528258, ['g']=0.164702222, ['b']=1.0}
    elseif sPlayer == 'Blue' then
        return {['r']=0.149015814, ['g']=0.419941843, ['b']=0.8235495}
    elseif sPlayer == 'Green' then
        return {['r']=0.201173037, ['g']=0.8549019, ['b']=0.188231409}
    elseif sPlayer == 'Black' then
        return {['r']=0.0, ['g']=0.0, ['b']=0.0}
    else
        return {['r']=1.0, ['g']=0.8, ['b']=0.0}
    end
end

--reset the response text when the turn is ended
function onPlayerTurnEnd(player_color_end, player_color_next)
    clearText()
end

--reset the response when the board is moved
function onPickUp(player_color)
    clearText()
end

--reset the response when the board is removed
function onDestroy()
    clearText()
end