Add a function to every game backend which indicates whether a game

state is in a solved position, and a midend function wrapping it.

(Or, at least, a situation in which further play is pointless. The
point is, given that game state, would it be a good idea for a front
end that does that sort of thing to proactively provide the option to
start a fresh game?)

[originally from svn r9140]

5 files changed, 30 insertions, 0 deletions

diff --git a/unfinished/group.c b/unfinished/group.c
index 7f7e0a2..869ff04 100644
--- a/unfinished/group.c
+++ b/unfinished/group.c
@@ -1813,6 +1813,11 @@ static float game_flash_length(game_state *oldstate, game_state *newstate,
     return 0.0F;
 }
 
+static int game_is_solved(game_state *state)
+{
+    return state->completed;
+}
+
 static int game_timing_state(game_state *state, game_ui *ui)
 {
     if (state->completed)
@@ -1931,6 +1936,7 @@ const struct game thegame = {
     game_redraw,
     game_anim_length,
     game_flash_length,
+    game_is_solved,
     TRUE, FALSE, game_print_size, game_print,
     FALSE,			       /* wants_statusbar */
     FALSE, game_timing_state,
diff --git a/unfinished/pearl.c b/unfinished/pearl.c
index bd40dba..843d99e 100644
--- a/unfinished/pearl.c
+++ b/unfinished/pearl.c
@@ -1349,6 +1349,11 @@ static float game_flash_length(game_state *oldstate, game_state *newstate,
     return 0.0F;
 }
 
+static int game_is_solved(game_state *state)
+{
+    return FALSE;
+}
+
 static int game_timing_state(game_state *state, game_ui *ui)
 {
     return TRUE;
@@ -1397,6 +1402,7 @@ const struct game thegame = {
     game_redraw,
     game_anim_length,
     game_flash_length,
+    game_is_solved,
     FALSE, FALSE, game_print_size, game_print,
     FALSE,			       /* wants_statusbar */
     FALSE, game_timing_state,
diff --git a/unfinished/separate.c b/unfinished/separate.c
index 75f0f43..b11f604 100644
--- a/unfinished/separate.c
+++ b/unfinished/separate.c
@@ -795,6 +795,11 @@ static float game_flash_length(game_state *oldstate, game_state *newstate,
     return 0.0F;
 }
 
+static int game_is_solved(game_state *state)
+{
+    return FALSE;
+}
+
 static int game_timing_state(game_state *state, game_ui *ui)
 {
     return TRUE;
@@ -843,6 +848,7 @@ const struct game thegame = {
     game_redraw,
     game_anim_length,
     game_flash_length,
+    game_is_solved,
     FALSE, FALSE, game_print_size, game_print,
     FALSE,			       /* wants_statusbar */
     FALSE, game_timing_state,
diff --git a/unfinished/slide.c b/unfinished/slide.c
index 634c5de..3ea3c95 100644
--- a/unfinished/slide.c
+++ b/unfinished/slide.c
@@ -2293,6 +2293,11 @@ static float game_flash_length(game_state *oldstate, game_state *newstate,
     return 0.0F;
 }
 
+static int game_is_solved(game_state *state)
+{
+    return state->completed;
+}
+
 static int game_timing_state(game_state *state, game_ui *ui)
 {
     return TRUE;
@@ -2341,6 +2346,7 @@ const struct game thegame = {
     game_redraw,
     game_anim_length,
     game_flash_length,
+    game_is_solved,
     FALSE, FALSE, game_print_size, game_print,
     TRUE,			       /* wants_statusbar */
     FALSE, game_timing_state,
diff --git a/unfinished/sokoban.c b/unfinished/sokoban.c
index c9cf2de..b389eb5 100644
--- a/unfinished/sokoban.c
+++ b/unfinished/sokoban.c
@@ -1415,6 +1415,11 @@ static float game_flash_length(game_state *oldstate, game_state *newstate,
         return 0.0F;
 }
 
+static int game_is_solved(game_state *state)
+{
+    return state->completed;
+}
+
 static int game_timing_state(game_state *state, game_ui *ui)
 {
     return TRUE;
@@ -1463,6 +1468,7 @@ const struct game thegame = {
     game_redraw,
     game_anim_length,
     game_flash_length,
+    game_is_solved,
     FALSE, FALSE, game_print_size, game_print,
     FALSE,			       /* wants_statusbar */
     FALSE, game_timing_state,