1 files changed, 32 insertions, 0 deletions

diff --git a/quantum/rgb_matrix_animations/solid_reactive_simple_anim.h b/quantum/rgb_matrix_animations/solid_reactive_simple_anim.h
new file mode 100644
index 000000000..e84cd6939
--- /dev/null
+++ b/quantum/rgb_matrix_animations/solid_reactive_simple_anim.h
@@ -0,0 +1,32 @@
+#pragma once
+#ifdef RGB_MATRIX_KEYREACTIVE_ENABLED
+#ifndef DISABLE_RGB_MATRIX_SOLID_REACTIVE_SIMPLE
+
+extern rgb_config_t rgb_matrix_config;
+extern last_hit_t g_last_hit_tracker;
+
+bool rgb_matrix_solid_reactive_simple(effect_params_t* params) {
+  RGB_MATRIX_USE_LIMITS(led_min, led_max);
+
+  HSV hsv = { rgb_matrix_config.hue, rgb_matrix_config.sat, 0 };
+  // Max tick based on speed scale ensures results from scale16by8 with rgb_matrix_config.speed are no greater than 255
+  uint16_t max_tick = 65535 / rgb_matrix_config.speed;
+  for (uint8_t i = led_min; i < led_max; i++) {
+    uint16_t tick = max_tick;
+    for(uint8_t j = 0; j < g_last_hit_tracker.count; j++) {
+      if (g_last_hit_tracker.index[j] == i && g_last_hit_tracker.tick[j] < tick) {
+        tick = g_last_hit_tracker.tick[j];
+        break;
+      }
+    }
+
+    uint16_t  offset = scale16by8(tick, rgb_matrix_config.speed);
+    hsv.v = scale8(255 - offset, rgb_matrix_config.val);
+    RGB rgb = hsv_to_rgb(hsv);
+    rgb_matrix_set_color(i, rgb.r, rgb.g, rgb.b);
+  }
+  return led_max < DRIVER_LED_TOTAL;
+}
+
+#endif // DISABLE_RGB_MATRIX_SOLID_REACTIVE_SIMPLE
+#endif // RGB_MATRIX_KEYREACTIVE_ENABLED