pirate/server.js

var PORT = 8080;
var gameMode = true;

var allSockets = {};
var allPlayers = {};
var userCnt = 0;

var express = require('express');
var app = express();
app.use(express.static(__dirname + '/'));
var server = require('http').Server(app);
var io = require('socket.io')(server);
var map = require("./s_map.js");
var mapWidth = 500;
var mapHeight = 500;
var maxX = mapWidth * 32;
var maxY = mapHeight * 32;
var newmap = map.generateMap(mapWidth,mapHeight);
var cssMap = newmap["cssMap"];
var map = newmap["map"];
var utilMap = newmap["utilMap"];
var defaultMvnt = 2;

server.listen(PORT);

console.log("Pirate running on port:"+PORT);
io.on('connection', function(socket){
	userCnt++;
	console.log("New user", socket.id);
	allSockets[socket.id] = socket;
	allPlayers[socket.id] = {
		keys : {},
		x : 10,
		y : 10,
		mvnt : defaultMvnt,
		special : {},
		mode : 0 //0 = ship //1 foot
	};
	var player = allPlayers[socket.id];
	io.sockets.emit("newPlayer", { player : allPlayers[socket.id], id : socket.id });

	socket.on('disconnect', function () {
		userCnt--;
		delete allSockets[socket.id];
		delete allPlayers[socket.id];
		console.log("User Disconnected:", socket.id);
		io.sockets.emit("playerDisc", socket.id);
	});

	socket.on('getmap', function () {
		
		newmap["allPlayers"] = allPlayers;
		socket.emit("getmap", newmap);
	});

	socket.on('keyUp', function (key) {
		allPlayers[socket.id]["keys"][key] = false;
	});

	socket.on('keyDown', function (key) {
		allPlayers[socket.id]["keys"][key] = true;
	});

	socket.on('actionKey', function (key) {
		var groundUnder = getGroundUnderPlayer(player["x"], player["y"]);
		if(player["mode"] == 0) { //ship
			if(groundUnder>=1) { //its nearly land
				player["mode"] = 1;
				player["special"]["modechange"] = true;
			}
		} else {
			if(groundUnder<=1) { //its water land
				player["mode"] = 0;
				player["special"]["modechange"] = true;
			}
		};
		console.log(player["mode"],groundUnder)
	});
	
});


setInterval(function() {
	for(var id in allPlayers) {
		var player = allPlayers[id];
		for(var key in player["keys"]) {
			if(player["keys"][key]) { //if key is pressed
				var tx = 0;
				var ty = 0;
				
				var mvnt = player["mvnt"];
				if(key==37) { //left
					tx = -1 * mvnt;
				} else if(key==38) { //top
					ty = -1 * mvnt;
				} else if(key==39) { //right
					tx = mvnt;
				} else if(key==40) { //bottom
					ty = mvnt;
				}

				var newX = player["x"]+tx;
				var newY = player["y"]+ty;
				
				var groundUnderPlayer = getGroundUnderPlayer(newX, newY);
				if(checkPlayerPosition(newX, newY, groundUnderPlayer, player)) {
					player["x"] = newX;
					player["y"] = newY;
					player["mvnt"] = getPlayerMvnt(player, groundUnderPlayer);
				}
			}
		}
	}
	io.sockets.emit("setpos", allPlayers);
	for(var id in allPlayers) {
		allPlayers[id]["special"] = {};
	}
},20);

function checkPlayerPosition(newX, newY, groundUnderPlayer, player) {
	if(newX <0 || newY<0 || newX > maxX || newY > maxY) {
		return false;
	}
	if(player["mode"]==0) { //ship
		if(groundUnderPlayer < 0 || groundUnderPlayer > 2) { //dont move with ship on land
			return false;
		}
	} else {

	}
	
	return true;
}

function getGroundUnderPlayer(newX, newY) { //0 = water; 10 = hard ground
	if(newX <0 || newY<0 || newX > maxX || newY > maxY) {
		return 0;
	}
	var mapX = Math.floor(newX/32);
	var mapY = Math.floor(newY/32);
	var ground = cssMap[mapY][mapX];
	var groundSplit = ground.split("_");
	if(groundSplit.length != 2) {
		if(ground == "water") {
			return 0;
		}
		return 10; //Ground
	}
	return parseFloat(groundSplit[1]);
}

function getPlayerMvnt(player, groundUnderPlayer) { 
	if(player["mode"]==0) { //ship
		if(groundUnderPlayer===1) { 
			return 0.5;
		} else if(groundUnderPlayer===2) { 
			return 0.1;
		}
	} else {
		if(groundUnderPlayer===0) { 
			return 0.1;
		} else if(groundUnderPlayer===1) {
			return 0.5;
		} else if(groundUnderPlayer===2) {
			return 0.8;
		}
		return 1.5;
	}
	return defaultMvnt;
}