/*
* Set a shimmering cloud effect. Return false if it could not be set.
*/
bool set_effect_shimmering_cloud(int f_idx, byte y, byte x, byte repeats, u16b power, s16b source, u16b flag)
{
feature_type *f_ptr = &f_info[f_idx];
int x_idx = x_pop();
int countdown;
int effect_power;
/*All full*/
if (!x_idx) return (FALSE);
/* Determine how powerful this should be. */
effect_power = (f_ptr->x_damage * power) / 100;
/* These are hidden, and displayed as bursts. */
flag |= (EF1_HIDDEN);
/* Get the countdown */
countdown = f_ptr->x_timeout_set + randint(f_ptr->x_timeout_rand);
/* Keep it in bounds */
if (countdown >= MAX_UCHAR) countdown = MAX_UCHAR - 1;
/* Create the effect */
effect_prep(x_idx, EFFECT_SHIMMERING_CLOUD, f_idx, y, x, (byte)countdown, repeats, effect_power, source, flag);
return (TRUE);
}
/*
* Set a smart trap effect. Return false if it could not be set.
*/
bool set_effect_trap_smart(int f_idx, byte y, byte x, u16b flags)
{
int x_idx = x_pop();
int countdown;
int trap_power;
feature_type *f_ptr = &f_info[f_idx];
/*All full*/
if (!x_idx) return (FALSE);
trap_power = (f_ptr->x_damage * (MAX(1, effective_depth(p_ptr->depth))) / 100);
/*
* Avoid unfair instadeaths for the player by creating the trap only partially charged.
*/
countdown = (f_ptr->x_timeout_set + rand_int(f_ptr->x_timeout_rand)) /2;
if (countdown <=3) countdown = 4;
/*Keep it in bounds*/
if (countdown >= MAX_UCHAR) countdown = MAX_UCHAR - 1;
flags |= (EF1_TRAP_SMART | EF1_PERMANENT | EF1_HIDDEN | EF1_HURT_PLAY);
effect_prep(x_idx, EFFECT_TRAP_SMART, f_idx, y, x, (byte)countdown, 1, trap_power, SOURCE_TRAP, flags);
return (TRUE);
}
/*
* Set an inscription effect. Return TRUE on success
*/
bool set_effect_inscription(int f_idx, byte y, byte x, s16b source, u16b flag)
{
/* Get the first effect on that grid */
int x_idx = cave_x_idx[y][x];
/* Scan the effects */
while (x_idx)
{
/* Get the effect */
effect_type *x_ptr = &x_list[x_idx];
/* Ignore locations already inscribed */
if (x_ptr->x_type == EFFECT_INSCRIPTION) return (FALSE);
/* Get the next effect */
x_idx = x_ptr->next_x_idx;
}
/* Get an empty entry */
x_idx = x_pop();
/* All full */
if (!x_idx) return (FALSE);
/* Dumb effect */
flag |= (EF1_SKIP);
/* Create the effect */
effect_prep(x_idx, EFFECT_INSCRIPTION, f_idx, y, x, 0, 0, 0, source, flag);
return (TRUE);
}
/*
* Set a lingering cloud effect. Return false if it could not be set.
*/
bool set_effect_lingering_cloud(int f_idx, byte y, byte x, u16b power, s16b source, u16b flag)
{
int x_idx = x_pop();
int countdown;
int effect_power;
feature_type *f_ptr = &f_info[f_idx];
/*All full*/
if (!x_idx) return (FALSE);
/* Determine how powerful this should be. */
effect_power = (f_ptr->x_damage * power) / 100;
/* Calculate countdown */
countdown = (effect_power / 1000) + f_ptr->x_timeout_set + randint(f_ptr->x_timeout_rand);
/* Keep it in bounds */
if (countdown >= MAX_UCHAR) countdown = MAX_UCHAR - 1;
/* Create the effect */
effect_prep(x_idx, EFFECT_LINGERING_CLOUD, f_idx, y, x, (byte)countdown, 0, effect_power, source, flag);
return (TRUE);
}
/*
* Read an object
*
* This function attempts to "repair" old savefiles, and to extract
* the most up to date values for various object fields.
*/
static errr rd_effect(void)
{
int x_idx;
byte type;
u16b f_idx;
byte y;
byte x;
byte countdown;
byte repeats;
u16b power;
s16b source;
u16b flags;
x_idx = x_pop();
/*something is wrong*/
if (!x_idx) return (-1);
/*Read the effect*/
rd_byte(&type);
rd_u16b(&f_idx);
rd_byte(&y);
rd_byte(&x);
rd_byte(&countdown);
rd_byte(&repeats);
rd_u16b(&power);
rd_s16b(&source);
rd_u16b(&flags);
/*Write it, unless it is an empty effect*/
if (type) effect_prep(x_idx, type, f_idx, y, x, countdown, repeats, power, source, flags);
/* Read a new field, a monster race for inscriptions */
if (!older_than(0,4,8))
{
s16b r_idx;
rd_s16b(&r_idx);
x_list[x_idx].x_r_idx = (type ? r_idx: 0);
}
/* Success */
return (0);
}
/*
* Set a passive trap effect. Return false if it could not be set.
*/
bool set_effect_trap_passive(int f_idx, byte y, byte x)
{
int x_idx = x_pop();
u16b flags = 0L;
/*All full*/
if (!x_idx) return (FALSE);
flags |= (EF1_TRAP_DUMB | EF1_PERMANENT | EF1_SKIP | EF1_HIDDEN | EF1_HURT_PLAY);
effect_prep(x_idx, EFFECT_TRAP_DUMB, f_idx, y, x, 1, 1, 0, SOURCE_TRAP, flags);
return (TRUE);
}
/*
* Set a permanent cloud effect. Return false if it could not be set.
* Currently assumes neither players nor monsters can set permanent effects (use of SOURCE_EFFECT)
*/
bool set_effect_permanent_cloud(int f_idx, byte y, byte x, u16b power, u16b flag)
{
int x_idx = x_pop();
/*All full*/
if (!x_idx) return (FALSE);
flag |= (EF1_PERMANENT | EF1_HURT_PLAY);
effect_prep(x_idx, EFFECT_PERMANENT_CLOUD, f_idx, y, x, 1, 1, power, SOURCE_EFFECT, flag);
return (TRUE);
}
/*
* Set a glyph. Return false if it could not be set.
*/
bool set_effect_glyph(byte y, byte x)
{
int x_idx = x_pop();
u16b flags = 0L;
/*All full*/
if (!x_idx) return (FALSE);
flags |= (EF1_GLYPH | EF1_PERMANENT | EF1_SKIP);
effect_prep(x_idx, EFFECT_GLYPH, FEAT_GLYPH, y, x, 1, 1, 0, SOURCE_TRAP, flags);
/* RE-do the flow */
p_ptr->update |= (PU_FLOW_DOORS | PU_FLOW_NO_DOORS);
return (TRUE);
}
/*
* Set a monster trap effect. Return false if it could not be set.
*/
bool set_effect_trap_player(int f_idx, byte y, byte x)
{
int x_idx = x_pop();
u16b flags = 0L;
/*All full*/
if (!x_idx) return (FALSE);
flags |= (EF1_TRAP_PLAYER | EF1_PERMANENT | EF1_SKIP);
effect_prep(x_idx, EFFECT_TRAP_PLAYER, f_idx, y, x, 1, 1, 0, SOURCE_TRAP, flags);
/* RE-do the flow */
p_ptr->update |= (PU_FLOW_DOORS | PU_FLOW_NO_DOORS);
return (TRUE);
}
/*
* Set a glacier effect. Return false if it could not be set.
*/
bool set_effect_glacier(int f_idx, byte y, byte x, s16b source, u16b flag)
{
int x_idx = x_pop();
int countdown;
/* Get the feature */
feature_type *f_ptr = &f_info[f_idx];
/* All full */
if (!x_idx) return (FALSE);
/* Calculate countdown */
countdown = f_ptr->x_timeout_set + randint(f_ptr->x_timeout_rand);
/* Keep it in bounds */
if (countdown >= MAX_UCHAR) countdown = MAX_UCHAR - 1;
/* Create the effect */
effect_prep(x_idx, EFFECT_GLACIER, f_idx, y, x, (byte)countdown, 0, 0, source, flag);
return (TRUE);
}