X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/7f77ea2439f0c82e537fb0f7dbd4bb7c08bf851a..b0f067190f385284449015d12d592b3f385b6a11:/midend.c

diff --git a/midend.c b/midend.c
index 9d05b44..cafc8ea 100644
--- a/midend.c
+++ b/midend.c
@@ -11,10 +11,19 @@
 #include "puzzles.h"
 
 struct midend_data {
+    frontend *frontend;
     char *seed;
     int nstates, statesize, statepos;
+
+    game_params **presets;
+    char **preset_names;
+    int npresets, presetsize;
+
     game_params *params;
     game_state **states;
+    game_drawstate *drawstate;
+    game_state *oldstate;
+    float anim_time, anim_pos;
 };
 
 #define ensure(me) do { \
@@ -24,14 +33,20 @@ struct midend_data {
     } \
 } while (0)
 
-midend_data *midend_new(void)
+midend_data *midend_new(frontend *frontend)
 {
     midend_data *me = snew(midend_data);
 
+    me->frontend = frontend;
     me->nstates = me->statesize = me->statepos = 0;
     me->states = NULL;
     me->params = default_params();
     me->seed = NULL;
+    me->drawstate = NULL;
+    me->oldstate = NULL;
+    me->presets = NULL;
+    me->preset_names = NULL;
+    me->npresets = me->presetsize = 0;
 
     return me;
 }
@@ -52,7 +67,7 @@ void midend_size(midend_data *me, int *x, int *y)
 void midend_set_params(midend_data *me, game_params *params)
 {
     free_params(me->params);
-    me->params = params;
+    me->params = dup_params(params);
 }
 
 void midend_new_game(midend_data *me, char *seed)
@@ -60,6 +75,9 @@ void midend_new_game(midend_data *me, char *seed)
     while (me->nstates > 0)
 	free_game(me->states[--me->nstates]);
 
+    if (me->drawstate)
+        game_free_drawstate(me->drawstate);
+
     assert(me->nstates == 0);
 
     sfree(me->seed);
@@ -71,6 +89,7 @@ void midend_new_game(midend_data *me, char *seed)
     ensure(me);
     me->states[me->nstates++] = new_game(me->params, me->seed);
     me->statepos = 1;
+    me->drawstate = game_new_drawstate(me->states[0]);
 }
 
 void midend_restart_game(midend_data *me)
@@ -80,48 +99,171 @@ void midend_restart_game(midend_data *me)
     me->statepos = me->nstates;
 }
 
-void midend_undo(midend_data *me)
+static int midend_undo(midend_data *me)
 {
-    if (me->statepos > 1)
+    if (me->statepos > 1) {
 	me->statepos--;
+        return 1;
+    } else
+        return 0;
 }
 
-void midend_redo(midend_data *me)
+static int midend_redo(midend_data *me)
 {
-    if (me->statepos < me->nstates)
+    if (me->statepos < me->nstates) {
 	me->statepos++;
+        return 1;
+    } else
+        return 0;
 }
 
 int midend_process_key(midend_data *me, int x, int y, int button)
 {
-    game_state *s;
+    game_state *oldstate = dup_game(me->states[me->statepos - 1]);
+    float anim_time;
+
+    if (me->oldstate || me->anim_time) {
+        if (me->oldstate)
+            free_game(me->oldstate);
+        me->oldstate = NULL;
+        me->anim_pos = me->anim_time = 0;
+        deactivate_timer(me->frontend);
+        midend_redraw(me);
+    }
 
     if (button == 'n' || button == 'N' || button == '\x0E') {
 	midend_new_game(me, NULL);
-	return 1;
+        midend_redraw(me);
+        return 1;                      /* never animate */
     } else if (button == 'r' || button == 'R') {
 	midend_restart_game(me);
-	return 1;
+        midend_redraw(me);
+        return 1;                      /* never animate */
     } else if (button == 'u' || button == 'u' ||
-	       button == '\x1A' || button == '\x1F') {
-	midend_undo(me);
-	return 1;
+               button == '\x1A' || button == '\x1F') {
+	if (!midend_undo(me))
+            return 1;
     } else if (button == '\x12') {
-	midend_redo(me);
-	return 1;
+	if (!midend_redo(me))
+            return 1;
     } else if (button == 'q' || button == 'Q' || button == '\x11') {
-	return 0;
+	free_game(oldstate);
+        return 0;
+    } else {
+        game_state *s = make_move(me->states[me->statepos-1], x, y, button);
+
+        if (s) {
+            while (me->nstates > me->statepos)
+                free_game(me->states[--me->nstates]);
+            ensure(me);
+            me->states[me->nstates] = s;
+            me->statepos = ++me->nstates;
+        } else {
+            free_game(oldstate);
+            return 1;
+        }
     }
 
-    s = make_move(me->states[me->statepos-1], x, y, button);
+    /*
+     * See if this move requires an animation.
+     */
+    anim_time = game_anim_length(oldstate, me->states[me->statepos-1]);
 
-    if (s) {
-	while (me->nstates > me->statepos)
-	    free_game(me->states[--me->nstates]);
-	ensure(me);
-	me->states[me->nstates] = s;
-	me->statepos = ++me->nstates;
+    if (anim_time > 0) {
+        me->oldstate = oldstate;
+        me->anim_time = anim_time;
+    } else {
+        free_game(oldstate);
+        me->oldstate = NULL;
+        me->anim_time = 0.0;
     }
+    me->anim_pos = 0.0;
+
+    midend_redraw(me);
+
+    activate_timer(me->frontend);
 
     return 1;
 }
+
+void midend_redraw(midend_data *me)
+{
+    if (me->statepos > 0 && me->drawstate) {
+        start_draw(me->frontend);
+        if (me->oldstate && me->anim_time > 0 &&
+            me->anim_pos < me->anim_time) {
+            game_redraw(me->frontend, me->drawstate, me->oldstate,
+                        me->states[me->statepos-1], me->anim_pos);
+        } else {
+            game_redraw(me->frontend, me->drawstate, NULL,
+                        me->states[me->statepos-1], 0.0);
+        }
+        end_draw(me->frontend);
+    }
+}
+
+void midend_timer(midend_data *me, float tplus)
+{
+    me->anim_pos += tplus;
+    if (me->anim_pos >= me->anim_time ||
+        me->anim_time == 0 || !me->oldstate) {
+        if (me->oldstate)
+            free_game(me->oldstate);
+        me->oldstate = NULL;
+        me->anim_pos = me->anim_time = 0;
+        deactivate_timer(me->frontend);
+    }
+    midend_redraw(me);
+}
+
+float *midend_colours(midend_data *me, int *ncolours)
+{
+    game_state *state = NULL;
+    float *ret;
+
+    if (me->nstates == 0) {
+        char *seed = new_game_seed(me->params);
+        state = new_game(me->params, seed);
+        sfree(seed);
+    } else
+        state = me->states[0];
+
+    ret = game_colours(me->frontend, state, ncolours);
+
+    if (me->nstates == 0)
+        free_game(state);
+
+    return ret;
+}
+
+int midend_num_presets(midend_data *me)
+{
+    if (!me->npresets) {
+        char *name;
+        game_params *preset;
+
+        while (game_fetch_preset(me->npresets, &name, &preset)) {
+            if (me->presetsize <= me->npresets) {
+                me->presetsize = me->npresets + 10;
+                me->presets = sresize(me->presets, me->presetsize,
+                                      game_params *);
+                me->preset_names = sresize(me->preset_names, me->presetsize,
+                                           char *);
+            }
+
+            me->presets[me->npresets] = preset;
+            me->preset_names[me->npresets] = name;
+            me->npresets++;
+        }
+    }
+
+    return me->npresets;
+}
+
+void midend_fetch_preset(midend_data *me, int n,
+                         char **name, game_params **params)
+{
+    assert(n >= 0 && n < me->npresets);
+    *name = me->preset_names[n];
+    *params = me->presets[n];
+}