Strange connections
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This sketch emerged while I was experimenting how to connect the two players' mouses. I liked the drawings that come out.
// using mqtt protokoll via shiftr.io
// https://docs.shiftr.io/manuals/processing/
import mqtt.*;
MQTTClient client;
/// Connection to other player
String mePlayer = "/playing-together/red/p2/xy";
String otherPlayer = "/playing-together/red/p1/xy";
/// variables for position of others players mouse
int otherMouseX = 0;
int otherMouseY = 0;
int otherPreviousMouseX = 0; //to keep track of last mouse position for drawing line
int otherPreviousMouseY = 0;
//set fix color for players
int p1color, p2color;
// time variables for mqtt
long timeStamp;
int delayTime = 1000/35;
void setup() {
client = new MQTTClient (this);
client.connect("mqtt://YOUR_SHIFTER_IO_Username:YOUR_SHIFTER_IO_Password@broker.shiftr.io", "YOUR_SHIFTER_IO_Username");
size(600,600);
background(255);
p1color = #AD2C2C; // color for player 1
p2color = #230E9D; // color for player 2
}
// RECEIVE messages of other player///
void clientConnected(){
println("client connected");
client.subscribe(otherPlayer);
}
void messageReceived(String topic, byte [] payload){
// the incoming MQTT "message" is a String: "xValue,yValue"
// to unpack it we use the "split" function:
String incomingPayload = new String(payload);
String [] xy = split(incomingPayload, ',');
if (int(xy[0])== 0 && int(xy[1])== 0){
background(255);
} else {
println("new message: " + topic + " x: " + xy[0] + " y: " +xy[1]);
otherMouseX = int(xy[0]);
otherMouseY = int(xy[1]);
}}
//SEND my mouse x, y //
void mouseDragged(){
//the MQTT connection will close if you send more than 25 operations per second!
//so we implement a delay to SEND my coordinates only every xxx milliseconds:
if(millis() - timeStamp > delayTime){
timeStamp = millis();
client.publish(mePlayer,mouseX + "," + mouseY);
}
strokeWeight(5); // set line thickness
// set right color for player //
if (mePlayer == "/playing-together/red/p1/xy"){
stroke(p1color);
} else if (mePlayer == "/playing-together/red/p2/xy") {
stroke(p2color);
}
line (pmouseX,pmouseY,mouseX, mouseY);
//set right color for player //
if (mePlayer == "/playing-together/red/p1/xy"){
stroke(p2color);
} else if (mePlayer == "/playing-together/red/p2/xy") {
stroke(p1color);
}
line (otherMouseX, otherMouseY, mouseX, mouseY);
}
// DRAW
void draw() {
strokeWeight(5); //line thickness
// set right color for player //
if (mePlayer == "/playing-together/red/p1/xy"){
stroke(p2color);
} else if (mePlayer == "/playing-together/red/p2/xy") {
stroke(p1color);
}
line(otherPreviousMouseX, otherPreviousMouseY, otherMouseX, otherMouseY);
otherPreviousMouseX = otherMouseX; //update previous to be current
otherPreviousMouseY = otherMouseY; //update previous to be current
if (mePlayer == "/playing-together/red/p1/xy"){
stroke(p1color);
} else if (mePlayer == "/playing-together/red/p2/xy") {
stroke(p2color);
}
line (mouseX, mouseY, otherMouseX,otherMouseY);
}
// reset canvas //
void keyPressed(){
background(255);
client.publish(mePlayer, 0 + "," + 0);
}
//DEFECT REPORT ///
void connectionList(){
println("connection lost");
}