#include "tree234.h"
const char *const game_name = "Net";
+const int game_can_configure = TRUE;
#define PI 3.141592653589793238462643383279502884197169399
return ret;
}
+config_item *game_configure(game_params *params)
+{
+ config_item *ret;
+ char buf[80];
+
+ ret = snewn(5, config_item);
+
+ ret[0].name = "Width";
+ ret[0].type = C_STRING;
+ sprintf(buf, "%d", params->width);
+ ret[0].sval = dupstr(buf);
+ ret[0].ival = 0;
+
+ ret[1].name = "Height";
+ ret[1].type = C_STRING;
+ sprintf(buf, "%d", params->height);
+ ret[1].sval = dupstr(buf);
+ ret[1].ival = 0;
+
+ ret[2].name = "Walls wrap around";
+ ret[2].type = C_BOOLEAN;
+ ret[2].sval = NULL;
+ ret[2].ival = params->wrapping;
+
+ ret[3].name = "Barrier probability";
+ ret[3].type = C_STRING;
+ sprintf(buf, "%g", params->barrier_probability);
+ ret[3].sval = dupstr(buf);
+ ret[3].ival = 0;
+
+ ret[4].name = NULL;
+ ret[4].type = C_END;
+ ret[4].sval = NULL;
+ ret[4].ival = 0;
+
+ return ret;
+}
+
+game_params *custom_params(config_item *cfg)
+{
+ game_params *ret = snew(game_params);
+
+ ret->width = atoi(cfg[0].sval);
+ ret->height = atoi(cfg[1].sval);
+ ret->wrapping = cfg[2].ival;
+ ret->barrier_probability = (float)atof(cfg[3].sval);
+
+ return ret;
+}
+
+char *validate_params(game_params *params)
+{
+ if (params->width <= 0 && params->height <= 0)
+ return "Width and height must both be greater than zero";
+ if (params->width <= 0)
+ return "Width must be greater than zero";
+ if (params->height <= 0)
+ return "Height must be greater than zero";
+ if (params->width <= 1 && params->height <= 1)
+ return "At least one of width and height must be greater than one";
+ if (params->barrier_probability < 0)
+ return "Barrier probability may not be negative";
+ if (params->barrier_probability > 1)
+ return "Barrier probability may not be greater than 1";
+ return NULL;
+}
+
/* ----------------------------------------------------------------------
* Randomly select a new game seed.
*/
tree234 *possibilities, *barriers;
int w, h, x, y, nbarriers;
- assert(params->width > 2);
- assert(params->height > 2);
+ assert(params->width > 0 && params->height > 0);
+ assert(params->width > 1 || params->height > 1);
/*
* Create a blank game state.
* closed loops. []
*/
possibilities = newtree234(xyd_cmp);
-
- add234(possibilities, new_xyd(state->cx, state->cy, R));
- add234(possibilities, new_xyd(state->cx, state->cy, U));
- add234(possibilities, new_xyd(state->cx, state->cy, L));
- add234(possibilities, new_xyd(state->cx, state->cy, D));
+
+ if (state->cx+1 < state->width)
+ add234(possibilities, new_xyd(state->cx, state->cy, R));
+ if (state->cy-1 >= 0)
+ add234(possibilities, new_xyd(state->cx, state->cy, U));
+ if (state->cx-1 >= 0)
+ add234(possibilities, new_xyd(state->cx, state->cy, L));
+ if (state->cy+1 < state->height)
+ add234(possibilities, new_xyd(state->cx, state->cy, D));
while (count234(possibilities) > 0) {
int i;