From: Holger Schemel <info@artsoft.org>
Date: Fri, 24 Nov 2023 16:25:50 +0000 (+0100)
Subject: added random push delay for rocks, nuts and bombs to EM game engine
X-Git-Tag: 4.3.8.0~33
X-Git-Url: https://git.artsoft.org/?p=rocksndiamonds.git;a=commitdiff_plain;h=8517e5eb6d3a4d17920a6705546d14593d3158e2

added random push delay for rocks, nuts and bombs to EM game engine

Just like in the original Emerald Mine game, there is now a random
delay when trying to push a rock, a nut or a bomb. While the chance
for rocks being successfully pushed at first attempt will be around
50 %, the chance for nuts will be a bit lower than that for rocks,
and the chance for bombs will be a bit lower than that for nuts,
with a roughly similar overall delay as in the original game.
---

diff --git a/src/game.c b/src/game.c
index a7e05b85..dc1e2442 100644
--- a/src/game.c
+++ b/src/game.c
@@ -3095,6 +3095,9 @@ static void InitGameEngine(void)
   game_em.use_single_button =
     (game.engine_version > VERSION_IDENT(4,0,0,2));
 
+  game_em.use_push_delay =
+    (game.engine_version > VERSION_IDENT(4,3,7,1));
+
   game_em.use_snap_key_bug =
     (game.engine_version < VERSION_IDENT(4,0,1,0));
 
diff --git a/src/game_em/convert.c b/src/game_em/convert.c
index 4c34fd16..f8059b53 100644
--- a/src/game_em/convert.c
+++ b/src/game_em/convert.c
@@ -472,6 +472,10 @@ void prepare_em_level(void)
   // - game_em.use_old_push_elements (default: FALSE)
   // - game_em.use_old_push_into_acid (default: FALSE)
   // - game_em.use_wrap_around (default: TRUE)
+  // - game_em.use_push_delay (default: TRUE)
+
+  if (native_em_level.file_version > FILE_VERSION_EM_V5)
+    game_em.use_push_delay = FALSE;
 
   game_em.level_solved = FALSE;
   game_em.game_over = FALSE;
diff --git a/src/game_em/export.h b/src/game_em/export.h
index 409a04e4..a2bbdef9 100644
--- a/src/game_em/export.h
+++ b/src/game_em/export.h
@@ -51,6 +51,7 @@ struct GameInfo_EM
   boolean use_old_push_elements;
   boolean use_old_push_into_acid;
   boolean use_wrap_around;
+  boolean use_push_delay;
 };
 
 struct LevelInfo_EM
diff --git a/src/game_em/logic.c b/src/game_em/logic.c
index 61f3237c..b73edab2 100644
--- a/src/game_em/logic.c
+++ b/src/game_em/logic.c
@@ -777,6 +777,9 @@ static boolean player_digfield(struct PLAYER *ply, int dx, int dy)
 	if (dy)
 	  break;
 
+	if (game_em.use_push_delay && RANDOM(32) < 16)
+	  goto stone_push_anim;
+
 	switch (cave[x+dx][y])
 	{
           case Xblank:
@@ -817,6 +820,8 @@ static boolean player_digfield(struct PLAYER *ply, int dx, int dy)
 	    break;
 	}
 
+      stone_push_anim:
+
 	ply->anim = PLY_push_n + anim;
 	break;
 
@@ -824,6 +829,9 @@ static boolean player_digfield(struct PLAYER *ply, int dx, int dy)
 	if (dy)
 	  break;
 
+	if (game_em.use_push_delay && RANDOM(32) < 22)
+	  goto bomb_push_anim;
+
 	switch (cave[x+dx][y])
 	{
 	  case Xblank:
@@ -864,6 +872,8 @@ static boolean player_digfield(struct PLAYER *ply, int dx, int dy)
 	    break;
 	}
 
+      bomb_push_anim:
+
 	ply->anim = PLY_push_n + anim;
 	break;
 
@@ -871,6 +881,9 @@ static boolean player_digfield(struct PLAYER *ply, int dx, int dy)
 	if (dy)
 	  break;
 
+	if (game_em.use_push_delay && RANDOM(32) < 19)
+	  goto nut_push_anim;
+
 	switch (cave[x+dx][y])
 	{
           case Xblank:
@@ -911,6 +924,8 @@ static boolean player_digfield(struct PLAYER *ply, int dx, int dy)
 	    break;
 	}
 
+      nut_push_anim:
+
 	ply->anim = PLY_push_n + anim;
 	break;
 
@@ -1469,6 +1484,8 @@ static void check_player(struct PLAYER *ply)
 
   ply->dynamite_cnt = 0;	/* reset dynamite timer if we move */
 
+  seed = game_em.random;
+
   if (!ply->joy_snap)		/* player wants to move */
   {
     boolean moved = FALSE;
@@ -1500,6 +1517,8 @@ static void check_player(struct PLAYER *ply)
   {
     game_em.any_player_snapping = player_digfield(ply, dx, dy);
   }
+
+  game_em.random = seed;
 }
 
 static void set_nearest_player_xy(int x, int y, int *dx, int *dy)