client.lua

require 'common'

local client = clientServer.client

if USE_LOCAL_SERVER then
    client.enabled = true
    client.start('127.0.0.1:22122')
else
    client.useCastleConfig()
end

local share = client.share
local home = client.home

function client.connect()
    print('client: connected to server')

    local player = share.players[client.id]
    home.x, home.y = player.x, player.y

    home.me = castle.user.getMe()
end

function client.disconnect()
    print('client: disconnected from server')
end

function client.receive(message, ...)
    if message == 'otherClientPressedKey' then
        local otherClientId, key = ...
        if otherClientId ~= client.id then
            print('client: other client ' .. otherClientId .. " pressed key '" .. key .. "'")
        end
    end
end

local playerImages = {}

function client.draw()
    if client.connected then
        for clientId, player in pairs(share.players) do
            local x, y = player.x, player.y
            if clientId == client.id then
                x, y = home.x, home.y
            end

            if not playerImages[clientId] then
                playerImages[clientId] = {}
            end

            if playerImages[clientId].image then
                -- Image is loaded, draw it
                local image = playerImages[clientId].image
                love.graphics.draw(image, x - 20, y - 20, 0,
                    40 / image:getWidth(), 40 / image:getHeight())
            else
                -- Image isn't loaded, draw a rectangle for now
                love.graphics.rectangle('fill', x - 20, y - 20, 40, 40)

                -- If a photo is available and we haven't fetched it yet,
                -- start fetching it and then save the image
                if player.me and player.me.photoUrl
                    and not playerImages[clientId].fetched then
                    playerImages[clientId].fetched = true
                    network.async(function()
                        local image = love.graphics.newImage(player.me.photoUrl)
                        playerImages[clientId].image = image
                    end)
                end
            end
        end
    else
        love.graphics.print('connecting...', 20, 20)
    end
end

local PLAYER_SPEED = 200

function client.update(dt)
    if client.connected then
        if love.keyboard.isDown('left') then
            home.x = home.x - PLAYER_SPEED * dt
        end
        if love.keyboard.isDown('right') then
            home.x = home.x + PLAYER_SPEED * dt
        end
        if love.keyboard.isDown('up') then
            home.y = home.y - PLAYER_SPEED * dt
        end
        if love.keyboard.isDown('down') then
            home.y = home.y + PLAYER_SPEED * dt
        end
    end
end

function client.keypressed(key)
    if client.connected then
        client.send('pressedKey', key)
    end
end