/*
Salty Dave's Drawing Machine
An engine designed to allow the user to several
pylons on the screen. Once the pre-set number of
pylons is created a pre-set number of balls appear
in the upper left corner and begin moving about.
When a ball collides with a pylon it bounces off
and the pylon generates a colored ring that
expands and fades away. While the balls are bouncing
around the user can click on a pylon and drag it to
change its position.
*/
boolean release = true; //Used to prevent multiple pylons being placed with one click.
boolean ontarget = false; //Used to determine if the cursor is ontop of a pylon for the click and drag interface.
int pylonTarget; //Stores the ID number of the pylon the cursor is ontop of.
int pylonTotal = 10; //Sets the total number of pylons.
int ballTotal = 10; //Sets the total number of balls.
int[] pylonX = new int[pylonTotal]; //Stores the X coordinates for the pylons.
int[] pylonY = new int[pylonTotal]; //Stores the Y coordinates for the pylons.
int[] ringX = new int[50]; //Stores the X coordinates for the rings.
int[] ringY = new int[50]; //Stores the Y coordinates for the rings.
int[] ringD = new int[50]; //Stores the duration coutners for the rings. This is used to control the ring's size and alpha.
int[] ringR = new int[50]; //Stores the red value for the rings' colors.
int[] ringG = new int[50]; //Stores the green value for the rings' colors.
int[] ringB = new int[50]; //Stores the blue value for the rings' colors.
int ringC = 0; //Ring Counter, used to keep track of how many rings exist and to limit the overlapping of ring data.
float[] ballX = new float[ballTotal]; //Stores the X coordinates for the balls.
float[] ballY = new float[ballTotal]; //Stores the Y coordinates for the balls.
float[] PballX = new float[ballTotal]; //Stores the previous significant X coordinates for the balls.
float[] PballY = new float[ballTotal]; //Stores the previous significant Y coordinates for the balls.
float[] dX = new float[ballTotal]; //Stores the X direction vectors for the balls.
float[] dY = new float[ballTotal]; //Stores the Y direction vectors for the balls.
float speed = 8; //Simple speed multiplier.
int pylonCounter = 0; //Counts the number of pylons currently created during the set up phase of the program.
void setup(){
frameRate(20); //Limiting the framerate to try and reduce the slow-down.
size(400,400);
noStroke();
background(255);
smooth();
//Initialize the position and direction of all the balls.
for(int i=0; i<ballTotal; i++){
PballX[i]=6;
PballY[i]=6;
ballX[i]=6;
ballY[i]=6;
dX[i]=random(0,1);
dY[i]=1-dX[i];
}
}
void draw(){
if(pylonCounter < pylonTotal){ //When there are fewer than 10 pylons on the screen.
if(mousePressed){
if(release==true){
release=false;
pylonX[pylonCounter] = mouseX;
pylonY[pylonCounter] = mouseY;
for(int i=0; i<30; i++){
fill(0+i*2);
ellipse(pylonX[pylonCounter]-i/4,pylonY[pylonCounter]-i/4,30-i,30-i);
}
pylonCounter++;
}
}
if(mousePressed){
}
else {
release = true;
}
}
else{
//This section is for when all the pylons are on the screen.
//Erase the screen.
fill(255);
rect(0,0,width,height);
//Draw the rings.
for(int i=0; i<50; i++){
if(ringD[i] != 0 && ringD[i]<100){
strokeWeight(10-ringD[i]/10);
stroke(ringR[i],ringG[i],ringB[i]);
noFill();
ellipse(ringX[i],ringY[i],ringD[i]*4,ringD[i]*4);
ringD[i] = ringD[i]+1;
}
else {
ringD[i] = 0;
}
}
//Draw the pylons.
noStroke();
for(int c=0; c<pylonTotal; c++){
for(int i=0; i<30; i++){
fill(0+i*2);
ellipse(pylonX[c]-i/4,pylonY[c]-i/4,30-i,30-i);
}
}
//Drawing the balls.
for(int c=0; c<ballTotal; c++){
for(int i=0; i<10; i++){
fill(40+i*10);
ellipse(ballX[c]-i/4,ballY[c]-i/4,10-i,10-i);
}
}
//Moving the ball.
for(int i=0; i<ballTotal; i++){
ballX[i] += dX[i]*speed;
ballY[i] += dY[i]*speed;
}
//Constrain the ball to the window.
for(int i=0; i<ballTotal; i++){
if (ballX[i] <= 5){
dX[i] = dX[i]*-1;
ballX[i] = 6;
}
if(ballX[i] >= width-5){
dX[i] = dX[i]*-1;
ballX[i] = width-6;
}
if (ballY[i] <= 5){
dY[i] = dY[i]*-1;
ballY[i] = 6;
}
if(ballY[i] >= height-5){
dY[i] = dY[i]*-1;
ballY[i] = height-6;
}
}
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Salty Dave's Drawing Machine (Read 870 times)