handle raindrops as structs

nametag/src/main.cpp

@@ -41,15 +41,30 @@ int line_length[PANEL_WIDTH]; // how long a line is for a given x coord
 int line_speed[PANEL_WIDTH]; // how fast each line moves
 unsigned long line_last_moved[PANEL_WIDTH];
 
+typedef struct {
+    int y;
+    int length;
+    int speed;
+    unsigned long last_moved;
+} Raindrop;
+
+Raindrop raindrops[PANEL_WIDTH];
+
 void setup(){
   Serial.begin(BAUD_RATE);
   pinMode(ONBOARD_LED, OUTPUT);
 
   for (int i = 0; i<PANEL_WIDTH; i++) {
-    line_pos[i] = 0 - random(24);
-    line_length[i] = random(20, 28);
-    line_speed[i] = random(25, 100);
-    line_last_moved[i] = millis();
+    raindrops[i].y = 0 - random(24);
+    raindrops[i].length = random(20, 28);
+    raindrops[i].speed = random(25, 100);
+    raindrops[i].last_moved = millis();
+    //raindrops[i] = rd;
+
+    //line_pos[i] = 0 - random(24);
+    //line_length[i] = random(20, 28);
+    //line_speed[i] = random(25, 100);
+    //line_last_moved[i] = millis();
   }
   // redefine pins if required
   HUB75_I2S_CFG::i2s_pins _pins={R1, G1, BL1, R2, G2, BL2, CH_A, CH_B, CH_C, CH_D, CH_E, LAT, OE, CLK};
@@ -72,36 +87,32 @@ void setup(){
 }
 
 void loop() {
-
   matrix ->flipDMABuffer();
   matrix->clearScreen();
   delay(25);
   //matrix ->drawBitmap(0, 0, overlay, 64, 32, matrix->color565(64, 0, 0));
   unsigned long timestamp = millis();
   for (int x = 0; x < PANEL_WIDTH; x++) {
-    if ((timestamp - line_last_moved[x]) > line_speed[x]) {
+    if ((timestamp - raindrops[x].last_moved) > raindrops[x].speed) {
       // step down a pixel
-      line_pos[x]++;
-      line_last_moved[x] = timestamp;
+      raindrops[x].y++;
+      raindrops[x].last_moved = timestamp;
     }
-    if (line_pos[x] > PANEL_HEIGHT) {
-      line_pos[x] = 0;
+    if (raindrops[x].y > PANEL_HEIGHT) {
+      raindrops[x].y = 0;
     }
-    if (line_pos[x] >= 0) {
+    if (raindrops[x].y >= 0) {
       //draw our pixel
-      matrix->drawPixel(x, line_pos[x], matrix->color565(128, 255, 128));
+      matrix->drawPixel(x, raindrops[x].y, matrix->color565(128, 255, 128));
       // draw our trail
-      for (int trail_offset = 1; trail_offset < line_length[x]; trail_offset++) {
-        //if (random(10) > 8) {
-        //  trail_offset++;
-        //}
-        int trail_y = line_pos[x] - trail_offset;
+      for (int trail_offset = 1; trail_offset < raindrops[x].length; trail_offset++) {
+        int trail_y = raindrops[x].y - trail_offset;
         if (trail_y >= 0) {
           int pixel_num = (trail_y * PANEL_WIDTH) + x;
           if (overlay[ pixel_num / 8 ] & (1 << (7 - (pixel_num % 8)) )) {
             matrix->drawPixel(x, trail_y, matrix->color565(128, 255, 128));
           } else {
-            matrix->drawPixel(x, trail_y, matrix->color565(0, (255 / line_length[x]) * (line_length[x] - trail_offset), 0));
+            matrix->drawPixel(x, trail_y, matrix->color565(0, (255 / raindrops[x].length) * (raindrops[x].length - trail_offset), 0));
           }
         } else {
           int pixel_num = ((PANEL_HEIGHT + trail_y) * PANEL_WIDTH) + x;
@@ -109,7 +120,7 @@ void loop() {
             if (overlay[ pixel_num / 8 ] & (1 << (7 - (pixel_num % 8)) )) {
               matrix->drawPixel(x, PANEL_HEIGHT + trail_y, matrix->color565(128, 255, 128));
             } else {
-              matrix->drawPixel(x, PANEL_HEIGHT + trail_y, matrix->color565(0,(255 / line_length[x]) * (line_length[x] - trail_offset), 0));
+              matrix->drawPixel(x, PANEL_HEIGHT + trail_y, matrix->color565(0,(255 / raindrops[x].length) * (raindrops[x].length - trail_offset), 0));
             }
           } else {
             break;
@@ -118,6 +129,5 @@ void loop() {
       }
     }
   }
-  //delay(25);
 }