fix resetting, add comments

src/ServerScriptService/ecs/systems/server/customReset.ts

@@ -0,0 +1,23 @@
+import { World, useEvent } from "@rbxts/matter"
+import { Health, Model, PlayerCharacter } from "ReplicatedStorage/ecs/components"
+import { getEvent } from "ReplicatedStorage/remotes"
+
+getEvent("resetButton")
+
+function customReset(world: World): void {
+	const resetButtonEvent = getEvent("resetButton")
+    for (const [, player] of useEvent(resetButtonEvent, "OnServerEvent")) {
+        for (const [id, playerCharacter, _model, health] of world.query(PlayerCharacter, Model, Health)) {
+            if (playerCharacter.player !== player) continue
+            world.insert(
+                id,
+                health.patch({
+                    health: 0,
+                    regeneration: 0
+                })
+            )
+        }
+    }
+}
+
+export = customReset