From 2a8dd6b9555e9387f8e5b6a3c3276efad86ad34a Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@users.noreply.github.com>
Date: Tue, 11 Oct 2022 22:09:15 +0200
Subject: [PATCH] - improved RANDOM_P2F interface.

---
 source/games/sw/src/game.h     | 2 +-
 source/games/sw/src/sector.cpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/source/games/sw/src/game.h b/source/games/sw/src/game.h
index 4426bb6db..431eb5e62 100644
--- a/source/games/sw/src/game.h
+++ b/source/games/sw/src/game.h
@@ -115,7 +115,7 @@ inline int RANDOM(void)
     return randomseed;
 }
 int RANDOM_P2(int pwr_of_2) { return (RANDOM() & (pwr_of_2 - 1)); }
-double RANDOM_P2F(int pwr_of_2) { return (RANDOM() & (pwr_of_2 - 1)) * maptoworld; }
+double RANDOM_P2F(int pwr_of_2, int shift) { return (RANDOM() & ((pwr_of_2 << shift) - 1)) * (1./(1 << shift)); }
 DAngle RANDOM_ANGLE() { return DAngle::fromBuild(RANDOM_P2(2048)); }
 
 //
diff --git a/source/games/sw/src/sector.cpp b/source/games/sw/src/sector.cpp
index 8e192e3e8..6b1f96699 100644
--- a/source/games/sw/src/sector.cpp
+++ b/source/games/sw/src/sector.cpp
@@ -844,7 +844,7 @@ void SectorExp(DSWActor* actor, sectortype* sectp, double zh)
     auto mid = SectorMidPoint(sectp);
     // randomize the explosions
     actor->spr.angle = DAngle::fromBuild(RANDOM_P2(256) - 128);
-    actor->spr.pos = { mid.X + RANDOM_P2F(256) - 16, mid.Y + RANDOM_P2F(1024) - 64, zh };
+    actor->spr.pos = { mid.X + RANDOM_P2F(16, 4) - 16, mid.Y + RANDOM_P2F(64, 4) - 64, zh };
     
     // setup vars needed by SectorExp
     ChangeActorSect(actor, sectp);