Squares together
Zur Navigation springen
Zur Suche springen
This sketch receives OnMouseClick and MousePosition input. Each position of the mouse is visible on the screen as a little square and sent to the other player, and you receive the other player's keys in a different colour.
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// S&&O SS2020 // course: *From Space to Space*
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import mqtt.*;
MQTTClient client;
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///////////////////// DECLARE GLOBAL VARIABLES /////////////////////
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// !!! CHANGE p1 and p2 depending on which player you are !!! //
String mePlayer = "/typing-together/orange/p2";
String otherPlayer = "/typing-together/orange/p1";
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int otherMouseX = 0; //for incoming values from other player's mouse xy
int otherMouseY = 0;
int otherPreviousMouseX = 0; //to keep track of last mouse position for drawing line
int otherPreviousMouseY = 0;
long timeStamp; //to keep track of time
int delayTime = 2000/35; //for use to publish messages only every 35 milliseconds!
int mouseClick = 1; //used to toggle between background fade and no-fade
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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(100); //set background colour
}
void clientConnected() {
println("client connected");
client.subscribe(otherPlayer);
}
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// RECEIVE //
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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, ',');
println("new message: " + topic + " x: " + xy[0] + " y: " +xy[1]);
otherMouseX = int(xy[0]);
otherMouseY = int(xy[1]);
}
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// SEND & DRAW my line //
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//!only DRAW my line and publish my coordinates when my mouse moves:
void mouseMoved() {
rect(60,60,100,100);
fill(230, 170, 70); //set line colour R,G,B
strokeWeight(5); //line thickness
rect(random(pmouseX, pmouseY),random(pmouseY,pmouseX), random(10, 60), random(10,60));
//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); // ("topic", "message")
}
}
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// DRAW other line //
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void draw() {
//click mouse to turn on/off fade effect:
if (mouseClick % 2 == 0) { //if even number of clicks
noStroke();
fill(10, 10); //fill(grayscale, alpha)
rect(0, 0, width, height); //draw rect full screen
}
rect(60,60,100,100);
fill(70, 230, 160); //set line colour R,G,B
strokeWeight(5); //line thickness
rect(otherPreviousMouseX, otherPreviousMouseY, otherMouseX, otherMouseY);
otherPreviousMouseX = otherMouseX; //update previous to be current
otherPreviousMouseY = otherMouseY; //update previous to be current
}
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void mouseClicked() {
mouseClick++;
println(mouseClick);
}
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void connectionLost() {
println("connection lost");
}