From: Holger Schemel <info@artsoft.org>
Date: Fri, 19 May 2023 14:05:08 +0000 (+0200)
Subject: added following diagonal side of a slope corner for MM engine
X-Git-Tag: 4.3.6.0~2
X-Git-Url: https://git.artsoft.org/?a=commitdiff_plain;h=1112bbb77ddfd963daae6d48337ed98d578c5835;p=rocksndiamonds.git

added following diagonal side of a slope corner for MM engine
---

diff --git a/src/game_mm/mm_game.c b/src/game_mm/mm_game.c
index d66dbc84..b258e374 100644
--- a/src/game_mm/mm_game.c
+++ b/src/game_mm/mm_game.c
@@ -1702,7 +1702,26 @@ static boolean HitElement(int element, int hit_mask)
 	hit_mask == HIT_MASK_TOP ||
 	hit_mask == HIT_MASK_BOTTOM)
     {
-      return HitReflectingWalls(element, hit_mask);
+      boolean hit_slope_corner_in_laser_direction =
+	((hit_mask == HIT_MASK_LEFT   && (element == EL_DF_SLOPE_01 ||
+					  element == EL_DF_SLOPE_02)) ||
+	 (hit_mask == HIT_MASK_RIGHT  && (element == EL_DF_SLOPE_00 ||
+					  element == EL_DF_SLOPE_03)) ||
+	 (hit_mask == HIT_MASK_TOP    && (element == EL_DF_SLOPE_02 ||
+					  element == EL_DF_SLOPE_03)) ||
+	 (hit_mask == HIT_MASK_BOTTOM && (element == EL_DF_SLOPE_00 ||
+					  element == EL_DF_SLOPE_01)));
+
+      boolean hit_slope_corner_in_laser_direction_double_checked =
+	(cross_x && cross_y &&
+	 laser.current_angle == mirrored_angle &&
+	 hit_slope_corner_in_laser_direction);
+
+      // check special case of laser hitting the corner of a slope and another
+      // element (either wall or another slope), following the diagonal side
+      // of the slope which has the same angle as the direction of the laser
+      if (!hit_slope_corner_in_laser_direction_double_checked)
+	return HitReflectingWalls(element, hit_mask);
     }
 
     // check if an edge was hit while crossing element borders