From 5131f9e651b6221589252400ac8036fe4abb1d0b Mon Sep 17 00:00:00 2001
From: Holger Schemel <info@artsoft.org>
Date: Sat, 18 Mar 2006 16:07:22 +0100
Subject: [PATCH] rnd-20060318-1-src * fixed bug in multi-player movement with
 focus on both players

---
 ChangeLog               |  3 +++
 src/conftime.h          |  2 +-
 src/game_em/graphics.c  | 40 ++++++++++++++++++++++++++++++++++++++++
 src/game_em/synchro_1.c |  2 ++
 4 files changed, 46 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 817ca24a..8c7cf639 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+2006-03-18
+	* fixed bug in multi-player movement with focus on both players
+
 2006-03-14
 	* added player focus switching to level tape recording and re-playing
 
diff --git a/src/conftime.h b/src/conftime.h
index 46e25f2b..ec52e6ca 100644
--- a/src/conftime.h
+++ b/src/conftime.h
@@ -1 +1 @@
-#define COMPILE_DATE_STRING "[2006-03-14 01:37]"
+#define COMPILE_DATE_STRING "[2006-03-18 15:44]"
diff --git a/src/game_em/graphics.c b/src/game_em/graphics.c
index 3b18584c..fbddeb2b 100644
--- a/src/game_em/graphics.c
+++ b/src/game_em/graphics.c
@@ -578,6 +578,34 @@ void DrawRelocatePlayer(struct PlayerInfo *player, boolean quick_relocation)
 }
 #endif
 
+static int getMaxCenterDistancePlayerNr(int center_x, int center_y)
+{
+  int max_dx = 0, max_dy = 0;
+  int player_nr = game_em.last_moving_player;
+  int i;
+
+  for (i = 0; i < MAX_PLAYERS; i++)
+  {
+    if (ply[i].alive)
+    {
+      int sx = PLAYER_SCREEN_X(i);
+      int sy = PLAYER_SCREEN_Y(i);
+
+      if (game_em.last_player_direction[i] != MV_NONE &&
+	  (ABS(sx - center_x) > max_dx ||
+	   ABS(sy - center_y) > max_dy))
+      {
+	max_dx = MAX(max_dx, ABS(sx - center_x));
+	max_dy = MAX(max_dy, ABS(sy - center_y));
+
+	player_nr = i;
+      }
+    }
+  }
+
+  return player_nr;
+}
+
 static void setMinimalPlayerBoundaries(int *sx1, int *sy1, int *sx2, int *sy2)
 {
   boolean num_checked_players = 0;
@@ -662,6 +690,11 @@ void RedrawPlayfield_EM(boolean force_redraw)
 #if 0
   boolean game.set_centered_player = getSetCenteredPlayer_EM();
   int game.centered_player_nr_next = getCenteredPlayerNr_EM();
+#endif
+#if 1
+  int player_nr = getMaxCenterDistancePlayerNr(screen_x, screen_y);
+#else
+  int player_nr = game_em.last_moving_player;
 #endif
   int offset = (setup.scroll_delay ? 3 : 0) * TILEX;
   int offset_x = offset;
@@ -720,8 +753,13 @@ void RedrawPlayfield_EM(boolean force_redraw)
     }
     else
     {
+#if 1
+      sx = PLAYER_SCREEN_X(player_nr);
+      sy = PLAYER_SCREEN_Y(player_nr);
+#else
       sx = PLAYER_SCREEN_X(game_em.last_moving_player);
       sy = PLAYER_SCREEN_Y(game_em.last_moving_player);
+#endif
     }
   }
   else
@@ -918,7 +956,9 @@ void RedrawPlayfield_EM(boolean force_redraw)
   else
   {
     /* prevent scrolling against the players move direction */
+#if 0
     int player_nr = game_em.last_moving_player;
+#endif
     int player_move_dir = game_em.last_player_direction[player_nr];
     int dx = SIGN(screen_x - screen_x_old);
     int dy = SIGN(screen_y - screen_y_old);
diff --git a/src/game_em/synchro_1.c b/src/game_em/synchro_1.c
index c6f00674..48bccb9b 100644
--- a/src/game_em/synchro_1.c
+++ b/src/game_em/synchro_1.c
@@ -452,6 +452,8 @@ static void check_player(struct PLAYER *ply)
   int anim = 0;
   int dx = 0, dy = 0;
 
+  game_em.last_player_direction[ply->num] = MV_NONE;
+
 #if 0
   printf("::: up == %d, down == %d, left == %d, right == %d, fire == %d [spin == %d, stick == %d]\n",
 	 ply->joy_n, ply->joy_s, ply->joy_w, ply->joy_e, ply->joy_fire,
-- 
2.34.1