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prashantgupta24prashantgupta24
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‎.gitignore‎

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test/*
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*.txt
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.DS_Store

‎README.md‎

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## Multiplayer top down shooter
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- Automatic local network searching for multiplayer
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- Windfield for collision detection
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## Useful links
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### Sockets
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- https://tst2005.github.io/lua-socket/udp.html - Network support for the Lua language documentation
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- https://github.com/diegonehab/luasocket
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- https://love2d.org/wiki/Tutorial:Networking_with_UDP-TheServer
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- https://love2d.org/wiki/Tutorial:Networking_with_UDP-TheClient
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- http://www.love2d.org/forums/viewtopic.php?f=4&t=86979 - [SOLVED] Luasocket UDP broadcast
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- https://en.wikipedia.org/wiki/Multicast_address
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- https://code.activestate.com/recipes/578802-send-messages-between-computers/ (UDP python)
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- http://w3.impa.br/~diego/software/luasocket/introduction.html
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### Windfield
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- https://github.com/a327ex/windfield
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- https://love2d.org/wiki/Body
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- https://box2d.org/documentation/md__d_1__git_hub_box2d_docs_collision.html

‎game/bullet.lua‎

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local function spawn(server, player)
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local bullet = {}
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server.bulletNum = server.bulletNum + 1
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bullet.id = server.bulletNum
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bullet.playerID = player.id
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bullet.speed = 500
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bullet.dead = false
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local bulletAngleIndex = server.angleIndex - 8
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if bulletAngleIndex < 0 then
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bulletAngleIndex = server.anglesMax - 8
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end
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bullet.direction = server.angles[bulletAngleIndex]
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bullet.x = player.x + math.cos(bullet.direction) * 40
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bullet.y = player.y + math.sin(bullet.direction) * 40
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if player.direction == 'left' then
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bullet.x = bullet.x - 10
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elseif player.direction == 'right' then
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bullet.x = bullet.x + 10
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elseif player.direction == 'up' then
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bullet.y = bullet.y - 10
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elseif player.direction == 'down' then
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bullet.y = bullet.y + 10
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end
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return bullet
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end
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local function move(server, bullet, collider, dt)
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collider = collider or false
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bullet.x = bullet.x + (math.cos( bullet.direction ) * bullet.speed * dt)
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bullet.y = bullet.y + (math.sin( bullet.direction ) * bullet.speed * dt)
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if collider then
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if not server.bulletCollider[bullet.id] then
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server.bulletCollider[bullet.id] = server.world:newCircleCollider(bullet.x, bullet.y, 15)
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server.bulletCollider[bullet.id]:setCollisionClass('bullet')
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else
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server.bulletCollider[bullet.id]:setX(bullet.x)
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server.bulletCollider[bullet.id]:setY(bullet.y)
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end
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if server.bulletCollider[bullet.id]:enter('zombie') then
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-- print('collision bz! ' , bullet.id)
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local collision_data = server.bulletCollider[bullet.id]:getEnterCollisionData('zombie')
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local zombieHit = collision_data.collider:getObject()
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-- print('collision with : ', zombieHit.id)
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local playerScore = server.players[bullet.playerID].score
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server.players[bullet.playerID].score = playerScore + 1
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zombieHit.dead = true
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bullet.dead = true
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end
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if server.bulletCollider[bullet.id]:enter('player') then
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-- print('collision bp! ' , bullet.id)
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local collision_data = server.bulletCollider[bullet.id]:getEnterCollisionData('player')
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local playerHit = collision_data.collider:getObject()
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-- print('collision with : ', playerHit.id)
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if playerHit.id ~= bullet.playerID then
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bullet.dead = true
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end
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end
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end
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end
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local function cleanup(server)
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for i=#server.bullets, 1, -1 do
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local b = server.bullets[i]
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if b.x < 0 or b.y < 0 or b.x > love.graphics.getWidth() or b.y > love.graphics.getHeight() then
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b.dead = true
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end
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if b.dead == true then
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table.remove(server.bullets, i)
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if server.bulletCollider[b.id] then server.bulletCollider[b.id]:destroy() end
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server.players[b.playerID].accuracy = (server.players[b.playerID].score/server.players[b.playerID].bulletsFired) * 100
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end
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end
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end
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return {
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spawn = spawn,
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move = move,
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cleanup = cleanup
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}

‎game/client/bullet.lua‎

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../bullet.lua

‎game/client/game.lua‎

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../game.lua

‎game/client/libraries‎

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../libraries

‎game/client/main.lua‎

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-- package.path = package.path .. ";../?.lua"
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-- package.path = package.path .. ";../?/init.lua"
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local game = require "game"
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local zombie = require "zombie"
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local player = require "player"
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function love.load()
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love.window.setMode(800, 600)
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GameClient = game.newClient(22122)
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love.window.setTitle( "Client")
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Sprites = {}
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Sprites.background = love.graphics.newImage('sprites/background.png')
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Sprites.bullet = love.graphics.newImage('sprites/bullet.png')
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Sprites.player = love.graphics.newImage('sprites/player1.png')
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Sprites.extra = love.graphics.newImage('sprites/ext.png')
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Sprites.zombie = love.graphics.newImage('sprites/zombie.png')
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Fonts = {}
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Fonts.xs = love.graphics.newFont(15)
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Fonts.s = love.graphics.newFont(20)
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Fonts.m = love.graphics.newFont(25)
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Fonts.l = love.graphics.newFont(30)
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-- setup a local player for offline play
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player.reset(GameClient.player)
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GameClient.player.name = 'Player_1'
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GameClient.player.id = 'id'
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GameClient.players['id'] = GameClient.player
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end
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function love.update(dt)
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GameClient:update(dt)
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end
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function love.draw()
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-- uncomment for debug, also comment background then
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-- GameClient.world:draw()
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-- drawing shapes first
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love.graphics.setColor(1, 1, 1, 1) -- white
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-- background
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love.graphics.draw(Sprites.background, 0, 0)
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-- all players
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if GameClient.currentGameState ~= GameClient.states.GAME_END then
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for id, playerObj in pairs(GameClient.players) do
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local spriteObj = Sprites.extra
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local angle = playerObj.angle
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local x = playerObj.x
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local y = playerObj.y
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if playerObj.id == GameClient.player.id then
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spriteObj = Sprites.player
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angle = GameClient.player.angle
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x = GameClient.player.x
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y = GameClient.player.y
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end
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love.graphics.draw(spriteObj,x, y, angle, 2, 2, spriteObj:getWidth()/2, spriteObj:getHeight()/2)
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end
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end
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-- extra
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for i,z in ipairs(GameClient.zombies) do
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love.graphics.draw(Sprites.zombie, z.x, z.y, zombie.playerAngle(z), nil, nil, Sprites.zombie:getWidth()/2, Sprites.zombie:getHeight()/2)
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end
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for i,b in ipairs(GameClient.bullets) do
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love.graphics.draw(Sprites.bullet, b.x, b.y, nil, 0.5, 0.5, Sprites.bullet:getWidth()/2, Sprites.bullet:getHeight()/2)
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end
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------------------------------------------------------------------------
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-- drawing text now
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love.graphics.setColor(0, 0, 0, 1) -- black
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-- player information
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if GameClient.client then
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love.graphics.printf("Name: " .. GameClient.player.name, Fonts.xs, 10, 10, love.graphics.getWidth(), "left")
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love.graphics.printf("RTT: " .. GameClient.client:getRoundTripTime(), Fonts.xs, -10, 10, love.graphics.getWidth(), "right")
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love.graphics.printf("Server: " .. GameClient.client:getAddress(), Fonts.xs, -10, 30, love.graphics.getWidth(), "right")
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end
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-- text according to game states
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if GameClient.currentGameState == GameClient.states.CLIENT_PLAY then
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love.graphics.printf("Finding server ...", Fonts.l, 0, 50, love.graphics.getWidth(), "center")
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end
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if GameClient.currentGameState == GameClient.states.INIT then
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love.graphics.printf("Press spacebar to begin!", Fonts.l, 0, 50, love.graphics.getWidth(), "center")
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end
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if GameClient.currentGameState == GameClient.states.WAITING then
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love.graphics.printf("Ready! Waiting for other players", Fonts.l, 0, 50, love.graphics.getWidth(), "center")
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end
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if GameClient.player.score and
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(GameClient.currentGameState == GameClient.states.READY
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or GameClient.currentGameState == GameClient.states.CLIENT_PLAY) then
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love.graphics.printf("Score: " .. GameClient.player.score, Fonts.l, 10, love.graphics.getHeight()-100, love.graphics.getWidth(), "center")
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love.graphics.printf("Bullets: " .. GameClient.player.bulletsFired, Fonts.xs, 10, love.graphics.getHeight()-50, love.graphics.getWidth(), "left")
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love.graphics.printf("Accuracy: " .. string.format("%.2f %%", GameClient.player.accuracy), Fonts.xs, 10, love.graphics.getHeight()-30, love.graphics.getWidth(), "left")
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end
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if GameClient.player.score and GameClient.currentGameState == GameClient.states.GAME_END then
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love.graphics.printf("Game over! Press spacebar to restart!", Fonts.l, 0, 50, love.graphics.getWidth(), "center")
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love.graphics.printf("Scores: ", Fonts.m, 20, love.graphics.getHeight()-250, love.graphics.getWidth(), "left")
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local height = 200
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local zombiesKilled = 0
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local sortedByScore = {}
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for id, playerObj in pairs(GameClient.playersClientCopy) do
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zombiesKilled = zombiesKilled + playerObj.score
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table.insert(sortedByScore, {id, playerObj})
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end
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table.sort(sortedByScore, function(a, b) return a[2].score > b[2].score end)
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for _, v in pairs(sortedByScore) do
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local playerObj = v[2]
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if playerObj.id == GameClient.player.id then love.graphics.setColor(1, 0, 0, 1) end
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love.graphics.printf(playerObj.name .. " :: Zombies killed: " .. playerObj.score .. ", Accuracy: " .. string.format("%.2f %%", playerObj.accuracy), Fonts.s ,20, love.graphics.getHeight()-height, love.graphics.getWidth(), "left")
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love.graphics.setColor(0, 0, 0, 1)
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height = height - 30
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end
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love.graphics.printf("Total zombies killed : " .. zombiesKilled, Fonts.m, 0, 100, love.graphics.getWidth(), "center")
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end
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if GameClient.currentGameState == GameClient.states.SERVER_DISCONNECT then
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love.graphics.printf("Disconnected from server.. Game will close soon!", Fonts.l, 0, 50, love.graphics.getWidth(), "center")
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end
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end
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function love.keypressed(key)
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if key == "space" then
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if GameClient.client then
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GameClient.client:send("input", {
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timestamp = love.timer.getTime(),
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})
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else
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GameClient:resetGame()
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GameClient.currentGameState = GameClient.states.CLIENT_PLAY
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end
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end
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end
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function love.keyreleased(key)
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if key == "w" or key == "a" or key == "s" or key == "d" then
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GameClient.player.direction = 'neutral'
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end
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end
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function love.quit()
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print("Thanks for playing!")
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if GameClient.client then
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GameClient.client:disconnectNow()
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end
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end

‎game/client/player.lua‎

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../player.lua

‎game/client/sprites/background.png‎

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‎game/client/sprites/background_1.png‎

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