1.6

js/weather_system.js

@@ -37,9 +37,29 @@
     );
   }
 
-  function createRainWaterItem(worldRef) {
-    const drop = new Item("water", rand(58, worldRef.w - 58), rand(58, worldRef.h - 58));
-    drop.amount = rand(24, 58);
+  function createRainWaterItem(worldRef, opts = {}) {
+    const px = Number(opts?.x);
+    const py = Number(opts?.y);
+    const hasX = Number.isFinite(px);
+    const hasY = Number.isFinite(py);
+    const x = hasX ? px : rand(58, worldRef.w - 58);
+    const y = hasY ? py : rand(58, worldRef.h - 58);
+    const drop = new Item("water", x, y);
+    const amount = Number(opts?.amount);
+    drop.amount = Number.isFinite(amount) ? amount : rand(24, 58);
+    // Rain drops, placed water drops, and water-balloon splashes all use the
+    // same Item("water") object.  Optional velocity only gives that same water
+    // item a short ballistic motion; it is not a separate splash item type.
+    const vx = Number(opts?.vx);
+    const vy = Number(opts?.vy);
+    if (Number.isFinite(vx) || Number.isFinite(vy)) {
+      drop.prevX = drop.x;
+      drop.prevY = drop.y;
+      drop.vx = Number.isFinite(vx) ? vx : 0;
+      drop.vy = Number.isFinite(vy) ? vy : 0;
+    }
+    const flight = Number(opts?.splashFlightTimer ?? opts?.flightTimer);
+    if (Number.isFinite(flight) && flight > 0) drop.splashFlightTimer = flight;
     return drop;
   }