1 files changed, 44 insertions, 0 deletions
diff --git a/quantum/rgb_matrix_animations/splash_anim.h b/quantum/rgb_matrix_animations/splash_anim.h
new file mode 100644
index 000000000..829d30eef
--- /dev/null
+++ b/quantum/rgb_matrix_animations/splash_anim.h
@@ -0,0 +1,44 @@
+#pragma once
+#ifdef RGB_MATRIX_KEYREACTIVE_ENABLED
+#if !defined(DISABLE_RGB_MATRIX_SPLASH) || !defined(DISABLE_RGB_MATRIX_MULTISPLASH)
+
+extern const rgb_led g_rgb_leds[DRIVER_LED_TOTAL];
+extern rgb_config_t rgb_matrix_config;
+extern last_hit_t g_last_hit_tracker;
+
+static bool rgb_matrix_multisplash_range(uint8_t start, effect_params_t* params) {
+  RGB_MATRIX_USE_LIMITS(led_min, led_max);
+
+  HSV hsv = { 0, rgb_matrix_config.sat, 0 };
+  uint8_t count = g_last_hit_tracker.count;
+  for (uint8_t i = led_min; i < led_max; i++) {
+    hsv.h = rgb_matrix_config.hue;
+    hsv.v = 0;
+    point_t point = g_rgb_leds[i].point;
+    for (uint8_t j = start; j < count; j++) {
+      int16_t dx = point.x - g_last_hit_tracker.x[j];
+      int16_t dy = point.y - g_last_hit_tracker.y[j];
+      uint8_t dist = sqrt16(dx * dx + dy * dy);
+      uint16_t effect = scale16by8(g_last_hit_tracker.tick[j], rgb_matrix_config.speed) - dist;
+      if (effect > 255)
+        effect = 255;
+      hsv.h += effect;
+      hsv.v = qadd8(hsv.v, 255 - effect);
+    }
+    hsv.v = scale8(hsv.v, 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;
+}
+
+bool rgb_matrix_multisplash(effect_params_t* params) {
+  return rgb_matrix_multisplash_range(0, params);
+}
+
+bool rgb_matrix_splash(effect_params_t* params) {
+  return rgb_matrix_multisplash_range(qsub8(g_last_hit_tracker.count, 1), params);
+}
+
+#endif // !defined(DISABLE_RGB_MATRIX_SPLASH) || !defined(DISABLE_RGB_MATRIX_MULTISPLASH)
+#endif // RGB_MATRIX_KEYREACTIVE_ENABLED