/**
* Gives the known effects of using the given item.
*
* Fills in:
* - the effect
* - whether the effect can be aimed
* - the minimum and maximum time in game turns for the item to recharge
* (or zero if it does not recharge)
* - the percentage chance of the effect failing when used
*
* Return false if the object has no effect.
*/
static bool obj_known_effect(const struct object *obj, struct effect **effect,
bool *aimed, int *min_recharge,
int *max_recharge, int *failure_chance)
{
random_value timeout = {0, 0, 0, 0};
*effect = 0;
*min_recharge = 0;
*max_recharge = 0;
*failure_chance = 0;
*aimed = false;
if (object_effect_is_known(obj)) {
*effect = object_effect(obj);
timeout = obj->time;
if (effect_aim(*effect))
*aimed = true;;
} else if (object_effect(obj)) {
/* Don't know much - be vague */
*effect = NULL;
if (!obj->artifact && effect_aim(object_effect(obj)))
*aimed = true;
return true;
} else {
/* No effect - no info */
return false;
}
if (randcalc(timeout, 0, MAXIMISE) > 0) {
*min_recharge = randcalc(timeout, 0, MINIMISE);
*max_recharge = randcalc(timeout, 0, MAXIMISE);
}
if (tval_is_edible(obj) || tval_is_potion(obj) || tval_is_scroll(obj)) {
*failure_chance = 0;
} else {
*failure_chance = get_use_device_chance(obj);
}
return true;
}
/**
* Gives the known effects of using the given item.
*
* Fills in:
* - the effect id, or OBJ_KNOWN_PRESENT if there is an effect but details
* are unknown
* - whether the effect can be aimed
* - the minimum and maximum time in game turns for the item to recharge
* (or zero if it does not recharge)
* - the percentage chance of the effect failing when used
*
* Return FALSE if the object has no effect.
*/
static bool obj_known_effect(const struct object *obj, int *effect, bool *aimed, int *min_recharge, int *max_recharge, int *failure_chance)
{
random_value timeout = {0, 0, 0, 0};
*effect = 0;
*min_recharge = 0;
*max_recharge = 0;
*failure_chance = 0;
*aimed = FALSE;
if (object_effect_is_known(obj)) {
*effect = object_effect(obj);
timeout = obj->time;
} else if (object_effect(obj)) {
/* Don't know much - be vague */
*effect = OBJ_KNOWN_PRESENT;
if (!obj->artifact && effect_aim(obj->effect))
*aimed = TRUE;
return TRUE;
} else {
/* No effect - no info */
return FALSE;
}
if (randcalc(timeout, 0, MAXIMISE) > 0) {
*min_recharge = randcalc(timeout, 0, MINIMISE);
*max_recharge = randcalc(timeout, 0, MAXIMISE);
}
if (tval_is_food(obj) || tval_is_potion(obj) || tval_is_scroll(obj)) {
*failure_chance = 0;
} else {
*failure_chance = get_use_device_chance(obj);
}
return TRUE;
}
/*
* Describe an object's effect, if any.
*/
static bool describe_effect(textblock *tb, const object_type *o_ptr, bool full,
bool only_artifacts, bool subjective)
{
const char *desc;
random_value timeout = {0, 0, 0, 0};
int effect = 0, fail;
if (o_ptr->artifact)
{
if (object_effect_is_known(o_ptr) || full)
{
effect = o_ptr->artifact->effect;
timeout = o_ptr->artifact->time;
}
else if (object_effect(o_ptr))
{
textblock_append(tb, "It can be activated.\n");
return TRUE;
}
}
else
{
/* Sometimes only print artifact activation info */
if (only_artifacts == TRUE) return FALSE;
if (object_effect_is_known(o_ptr) || full)
{
effect = o_ptr->kind->effect;
timeout = o_ptr->kind->time;
}
else if (object_effect(o_ptr) != 0)
{
if (effect_aim(o_ptr->kind->effect))
textblock_append(tb, "It can be aimed.\n");
else if (o_ptr->tval == TV_FOOD)
textblock_append(tb, "It can be eaten.\n");
else if (o_ptr->tval == TV_POTION)
textblock_append(tb, "It can be drunk.\n");
else if (o_ptr->tval == TV_SCROLL)
textblock_append(tb, "It can be read.\n");
else textblock_append(tb, "It can be activated.\n");
return TRUE;
}
}
/* Forget it without an effect */
if (!effect) return FALSE;
/* Obtain the description */
desc = effect_desc(effect);
if (!desc) return FALSE;
if (effect_aim(effect))
textblock_append(tb, "When aimed, it ");
else if (o_ptr->tval == TV_FOOD)
textblock_append(tb, "When eaten, it ");
else if (o_ptr->tval == TV_POTION)
textblock_append(tb, "When drunk, it ");
else if (o_ptr->tval == TV_SCROLL)
textblock_append(tb, "When read, it ");
else
textblock_append(tb, "When activated, it ");
/* Print a colourised description */
do
{
if (isdigit((unsigned char) *desc))
textblock_append_c(tb, TERM_L_GREEN, "%c", *desc);
else
textblock_append(tb, "%c", *desc);
} while (*desc++);
textblock_append(tb, ".\n");
if (randcalc(timeout, 0, MAXIMISE) > 0)
{
int min_time, max_time;
/* Sometimes adjust for player speed */
int multiplier = extract_energy[p_ptr->state.speed];
if (!subjective) multiplier = 10;
textblock_append(tb, "Takes ");
/* Correct for player speed */
min_time = randcalc(timeout, 0, MINIMISE) * multiplier / 10;
max_time = randcalc(timeout, 0, MAXIMISE) * multiplier / 10;
textblock_append_c(tb, TERM_L_GREEN, "%d", min_time);
if (min_time != max_time)
{
textblock_append(tb, " to ");
textblock_append_c(tb, TERM_L_GREEN, "%d", max_time);
}
textblock_append(tb, " turns to recharge");
if (subjective && p_ptr->state.speed != 110)
textblock_append(tb, " at your current speed");
textblock_append(tb, ".\n");
}
if (!subjective || o_ptr->tval == TV_FOOD || o_ptr->tval == TV_POTION ||
o_ptr->tval == TV_SCROLL)
{
return TRUE;
}
else
{
fail = get_use_device_chance(o_ptr);
textblock_append(tb, "Your chance of success is %d.%d%%\n", (1000 - fail) /
10, (1000 - fail) % 10);
}
return TRUE;
}
/*
* Describe an object's effect, if any.
*/
static bool describe_effect(textblock * tb, const object_type * o_ptr,
oinfo_detail_t mode)
{
const object_kind *k_ptr = &k_info[o_ptr->k_idx];
const char *desc;
random_value timeout = { 0, 0, 0, 0 };
bool full = mode & OINFO_FULL;
bool subjective = mode & OINFO_SUBJ;
bool terse = mode & OINFO_TERSE;
int effect = 0, fail;
if (wearable_p(o_ptr)) {
/* Wearable + effect <=> activates */
if ((o_ptr->ident & IDENT_WORN) || full) {
effect = o_ptr->effect;
timeout = o_ptr->time;
} else if (object_effect(o_ptr)) {
textblock_append(tb, "It can be activated.\n");
return TRUE;
}
} else {
/* Sometimes only print activation info */
if (terse)
return FALSE;
if ((object_aware_p(o_ptr)
&& kf_has(k_ptr->flags_kind, KF_EASY_KNOW))
|| full) {
effect = o_ptr->effect;
timeout = o_ptr->time;
} else if (object_effect(o_ptr)) {
if (effect_aim(k_ptr->effect))
textblock_append(tb, "It can be aimed.\n");
else if (o_ptr->tval == TV_FOOD)
textblock_append(tb, "It can be eaten.\n");
else if (o_ptr->tval == TV_POTION)
textblock_append(tb, "It can be drunk.\n");
else if (o_ptr->tval == TV_SCROLL)
textblock_append(tb, "It can be read.\n");
else
textblock_append(tb, "It can be activated.\n");
return TRUE;
}
}
/* Forget it without an effect */
if (!effect)
return FALSE;
/* Obtain the description */
desc = effect_desc(effect);
if (!desc)
return FALSE;
if (effect_aim(effect))
textblock_append(tb, "When aimed, it ");
else if (o_ptr->tval == TV_FOOD)
textblock_append(tb, "When eaten, it ");
else if (o_ptr->tval == TV_POTION)
textblock_append(tb, "When drunk, it ");
else if (o_ptr->tval == TV_SCROLL)
textblock_append(tb, "When read, it ");
else
textblock_append(tb, "When activated, it ");
/* Print a colourised description */
do {
if (isdigit((unsigned char) *desc))
textblock_append_c(tb, TERM_L_GREEN, "%c", *desc);
else
textblock_append(tb, "%c", *desc);
} while (*desc++);
textblock_append(tb, ".\n");
if (randcalc(timeout, 0, MAXIMISE) > 0) {
int min_time, max_time;
/* Sometimes adjust for player speed */
int multiplier = extract_energy[p_ptr->state.pspeed];
if (!subjective)
multiplier = 10;
textblock_append(tb, "Takes ");
/* Correct for player speed */
min_time = randcalc(timeout, 0, MINIMISE) * multiplier / 10;
max_time = randcalc(timeout, 0, MAXIMISE) * multiplier / 10;
textblock_append_c(tb, TERM_L_GREEN, "%d", min_time);
if (min_time != max_time) {
textblock_append(tb, " to ");
textblock_append_c(tb, TERM_L_GREEN, "%d", max_time);
}
textblock_append(tb, " turns to recharge");
if (subjective && p_ptr->state.pspeed != 110)
textblock_append(tb, " at your current speed");
textblock_append(tb, ".\n");
}
if (!subjective || o_ptr->tval == TV_FOOD || o_ptr->tval == TV_POTION
|| o_ptr->tval == TV_SCROLL) {
return TRUE;
} else {
fail = get_use_device_chance(o_ptr);
textblock_append(tb, "Your chance of success is %d.%d%%\n",
(1000 - fail) / 10, (1000 - fail) % 10);
}
return TRUE;
}
