From 2fd61deb042e1f73841b24b098fb4a5aa5d6e86e Mon Sep 17 00:00:00 2001
From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Sun, 16 Nov 2008 15:47:55 +0000
Subject: [PATCH] Patch from Lee Dowling to implement mouse control in Sokoban,
 along pretty much the same lines as Cube and Inertia.

git-svn-id: svn://svn.tartarus.org/sgt/puzzles@8301 cda61777-01e9-0310-a592-d414129be87e
---
 unfinished/sokoban.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/unfinished/sokoban.c b/unfinished/sokoban.c
index 91f02a6..c9cf2de 100644
--- a/unfinished/sokoban.c
+++ b/unfinished/sokoban.c
@@ -1044,7 +1044,7 @@ int move_type(game_state *state, int dx, int dy)
 static char *interpret_move(game_state *state, game_ui *ui, game_drawstate *ds,
 			    int x, int y, int button)
 {
-    int dx, dy;
+    int dx=0, dy=0;
     char *move;
 
     /*
@@ -1071,9 +1071,23 @@ static char *interpret_move(game_state *state, game_ui *ui, game_drawstate *ds,
         dx = -1, dy = +1;
     else if (button == (MOD_NUM_KEYPAD | '3'))
         dx = +1, dy = +1;
+    else if (button == LEFT_BUTTON)
+    {
+        if(x < COORD(state->px))
+            dx = -1;
+        else if (x > COORD(state->px + 1))
+            dx = 1;
+        if(y < COORD(state->py))
+            dy = -1;
+        else if (y > COORD(state->py + 1))
+            dy = 1;
+    }
     else
         return NULL;
 
+    if((dx == 0) && (dy == 0))
+        return(NULL);
+
     if (move_type(state, dx, dy) < 0)
         return NULL;
 
-- 
2.11.0