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Star.pde

@@ -0,0 +1,40 @@
+class Star{
+  float x;
+  float y;
+  float z;
+
+  float speed;
+
+  Star(){
+   x = random(-width, width);
+   y = random(-height, height);
+   z = random(width);
+
+  }
+
+  void update(){
+    if(mouseX<width/2)
+    speed = map(mouseX, 0,width/2,0 , 50);
+    else
+    speed = map(mouseX,width/2,width,50,0);
+    z=z-speed;
+
+    if(z<1){
+      x = random(-width, width);
+      y = random(-height, height);
+      z = random(width);
+
+    }
+  }
+
+  void show(){
+   fill(215,204,222);
+   noStroke();
+
+   float sx = map(x/z,0,1,0,width);
+   float sy = map(y/z,0,1,0,height);
+
+   float size = map(z,0,width,8,0);
+   ellipse(sx,sy,size,size);
+  }
+}

Starfield.pde

@@ -0,0 +1,17 @@
+Star[] stars = new Star[1000];
+
+void setup(){
+ size(1720,800);
+ for(int i=0;i<stars.length;i++){
+  stars[i] = new Star(); 
+ }
+}
+
+void draw(){
+ background(0);
+ translate(mouseX,mouseY);
+ for(int i=0;i<stars.length;i++){
+  stars[i].update();
+  stars[i].show();
+ }
+}