Added Ball Track V1

In this version the balls bounce of the edges and do not interact with one another.

wled00/FX.cpp

@@ -2528,7 +2528,13 @@ typedef struct Ball {
   float impactVelocity;
   float height;
 } ball;
-
+// modified for balltrack mode
+typedef struct Ballt {
+  unsigned long lastBounceUpdate;
+  float mass; // could fix this to be = 1. if memory is an issue
+  float velocity;
+  float height;
+} ballt;
 /*
 *  Bouncing Balls Effect
 */
@@ -2540,7 +2546,7 @@ uint16_t WS2812FX::mode_bouncing_balls(void) {
 
   Ball* balls = reinterpret_cast<Ball*>(SEGENV.data);
 
-  // number of balls based on intensity setting to max of 7 (cycles colors)
+  // number of balls based on intensity setting to max of 16 (cycles colors)
   // non-chosen color is a random color
   uint8_t numBalls = int(((SEGMENT.intensity * (maxNumBalls - 0.8f)) / 255) + 1);
 
@@ -2585,6 +2591,70 @@ uint16_t WS2812FX::mode_bouncing_balls(void) {
 
   return FRAMETIME;
 }
+/*
+*  bouncing balls on a track track Effect modified from Air Cookie's bouncing balls
+*/
+uint16_t WS2812FX::mode_balltrack(void) {
+  //allocate segment data
+  uint16_t maxNumBalls = 16;
+  uint16_t dataSize = sizeof(ballt) * maxNumBalls;
+  if (!SEGENV.allocateData(dataSize)) return mode_static(); //allocation failed
+
+  Ballt* balls = reinterpret_cast<Ballt*>(SEGENV.data);
+
+  // number of balls based on intensity setting to max of 16 (cycles colors)
+  // non-chosen color is a random color
+  uint8_t numBalls = int(((SEGMENT.intensity * (maxNumBalls - 0.8f)) / 255) + 1);
+
+
+  unsigned long time = millis();
+
+  if (SEGENV.call == 0) {
+    for (uint8_t i = 0; i < maxNumBalls; i++) {
+      balls[i].lastBounceUpdate = time;
+      balls[i].velocity = 0;
+      while(abs(balls[i].velocity)<.5){
+        balls[i].velocity=10.*(-.5-float(random16(0, 10000)) / 10000.0); // from -5. to 5. note that sqt(2*9.8)= 4.4 max speed in bouncing ball mode
+      }
+      balls[i].height=(float(random16(0, 10000)) / 10000.0); // from 0. to 1.
+      balls[i].mass=(float(random16(5000, 10000)) / 10000.0); // from .5 to 1.
+    }
+  }
+
+  bool hasCol2 = SEGCOLOR(2);
+  fill(hasCol2 ? BLACK : SEGCOLOR(1));
+
+  for (uint8_t i = 0; i < numBalls; i++) {
+    if(abs(balls[i].velocity)<.5) { // then I am guessing we have a new ball
+      balls[i].lastBounceUpdate = time;
+      balls[i].velocity = 0;
+      while(abs(balls[i].velocity)<.5){
+        balls[i].velocity=10.*(-.5-float(random16(0, 10000)) / 10000.0); // from -5. to 5. note that sqt(2*9.8)= 4.4 max speed in bouncing ball mode
+      }
+      balls[i].height=(float(random16(0, 10000)) / 10000.0); // from 0. to 1.
+      balls[i].mass=(float(random16(5000, 10000)) / 10000.0); // from .5 to 1.
+    }
+
+    float timeSinceLastUpdate = (time - balls[i].lastBounceUpdate)/((255-SEGMENT.speed)*8/256 +1); //uses Air Cookie conversion
+    balls[i].height += balls[i].velocity * timeSinceLastUpdate/1000/10;
+
+    if (balls[i].height < 0. && balls[i].velocity<0) balls[i].velocity=-balls[i].velocity; //reverse velocity
+    if (balls[i].height > 1. && balls[i].velocity>0) balls[i].velocity=-balls[i].velocity; // reverse velocity
+    balls[i].lastBounceUpdate = time;
+
+    uint32_t color = SEGCOLOR(0);
+    if (SEGMENT.palette) {
+      color = color_wheel(i*(256/MAX(numBalls, 8)));
+    } else if (hasCol2) {
+      color = SEGCOLOR(i % NUM_COLORS);
+    }
+
+    uint16_t pos = round(balls[i].height * (SEGLEN - 1));
+    setPixelColor(pos, color);
+  }
+
+  return FRAMETIME;
+}
 
 
 /*

wled00/FX.h

@@ -98,7 +98,7 @@
 #define IS_REVERSE      ((SEGMENT.options & REVERSE     ) == REVERSE     )
 #define IS_SELECTED     ((SEGMENT.options & SELECTED    ) == SELECTED    )
 
-#define MODE_COUNT  112
+#define MODE_COUNT  113
 
 #define FX_MODE_STATIC                   0
 #define FX_MODE_BLINK                    1
@@ -212,7 +212,7 @@
 #define FX_MODE_PHASEDNOISE            109
 #define FX_MODE_FLOW                   110
 #define FX_MODE_CHUNCHUN               111
-
+#define FX_MODE_BALLTRACK              112
 class WS2812FX {
   typedef uint16_t (WS2812FX::*mode_ptr)(void);
 
@@ -412,7 +412,7 @@ class WS2812FX {
       _mode[FX_MODE_PHASEDNOISE]             = &WS2812FX::mode_phased_noise;
       _mode[FX_MODE_FLOW]                    = &WS2812FX::mode_flow;
       _mode[FX_MODE_CHUNCHUN]                = &WS2812FX::mode_chunchun;
-
+      _mode[FX_MODE_BALLTRACK]               = &WS2812FX::mode_balltrack;
       _brightness = DEFAULT_BRIGHTNESS;
       currentPalette = CRGBPalette16(CRGB::Black);
       targetPalette = CloudColors_p;
@@ -607,7 +607,8 @@ class WS2812FX {
       mode_sinewave(void),
       mode_phased_noise(void),
       mode_flow(void),
-      mode_chunchun(void);
+      mode_chunchun(void),
+      mode_balltrack(void);
 
   private:
     NeoPixelWrapper *bus;
@@ -695,7 +696,7 @@ const char JSON_mode_names[] PROGMEM = R"=====([
 "Twinklefox","Twinklecat","Halloween Eyes","Solid Pattern","Solid Pattern Tri","Spots","Spots Fade","Glitter","Candle","Fireworks Starburst",
 "Fireworks 1D","Bouncing Balls","Sinelon","Sinelon Dual","Sinelon Rainbow","Popcorn","Drip","Plasma","Percent","Ripple Rainbow",
 "Heartbeat","Pacifica","Candle Multi", "Solid Glitter","Sunrise","Phased","Twinkleup","Noise Pal", "Sine","Phased Noise",
-"Flow","Chunchun"
+"Flow","Chunchun","Ball Track"
 ])=====";