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/* File: help.c */
/* Purpose: ingame help */
/*
* Copyright (c) 2001 DarkGod
* Copyright (c) 2012 Bardur Arantsson
*
* This software may be copied and distributed for educational, research, and
* not for profit purposes provided that this copyright and statement are
* included in all such copies.
*/
#include "angband.h"
#define DESC_MAX 10
#define TRIGGERED_HELP_MAX 8
#define HELP_VOID_JUMPGATE 0
#define HELP_FOUNTAIN 1
#define HELP_FOUND_OBJECT 2
#define HELP_FOUND_ALTAR 3
#define HELP_FOUND_STAIR 4
#define HELP_GET_ESSENCE 5
#define HELP_GET_RUNE 6
#define HELP_GET_ROD 7
/**
* Struct for help triggered by a boolean condition
*/
typedef struct triggered_help_type triggered_help_type;
struct triggered_help_type
{
/* Help item index; see HELP_* constants above */
int help_index;
/* Hook type */
int hook_type;
/* Trigger function */
bool_ (*trigger_func)(void *in, void *out);
/* Description; NULL terminated */
cptr desc[DESC_MAX];
};
/**
* Trigger functions
*/
static bool_ trigger_void_jumpgate(void *in, void *out) {
hook_move_in *p = (hook_move_in *) in;
return cave[p->y][p->x].feat == FEAT_BETWEEN;
}
static bool_ trigger_fountain(void *in, void *out) {
hook_move_in *p = (hook_move_in *) in;
return cave[p->y][p->x].feat == FEAT_FOUNTAIN;
}
static bool_ trigger_found_object(void *in, void *out) {
hook_move_in *p = (hook_move_in *) in;
return cave[p->y][p->x].o_idx != 0;
}
static bool_ trigger_found_altar(void *in, void *out) {
hook_move_in *p = (hook_move_in *) in;
return ((cave[p->y][p->x].feat >= FEAT_ALTAR_HEAD) &&
(cave[p->y][p->x].feat <= FEAT_ALTAR_TAIL));
}
static bool_ trigger_found_stairs(void *in, void *out) {
hook_move_in *p = (hook_move_in *) in;
return (cave[p->y][p->x].feat == FEAT_MORE);
}
static bool_ trigger_get_essence(void *in, void *out) {
hook_get_in *g = (hook_get_in *) in;
return (g->o_ptr->tval == TV_BATERIE);
}
static bool_ trigger_get_rune(void *in, void *out) {
hook_get_in *g = (hook_get_in *) in;
return ((g->o_ptr->tval == TV_RUNE1) ||
(g->o_ptr->tval == TV_RUNE2));
}
static bool_ trigger_get_rod(void *in, void *out) {
hook_get_in *g = (hook_get_in *) in;
return (g->o_ptr->tval == TV_ROD_MAIN);
}
/**
* Trigger-based help items
*/
static triggered_help_type triggered_help[TRIGGERED_HELP_MAX] =
{
{ HELP_VOID_JUMPGATE,
HOOK_MOVE,
trigger_void_jumpgate,
{ "Void Jumpgates can be entered by pressing the > key. They will transport",
"you to another jumpgate, but beware of the cold damage that might kill you.",
NULL }
},
{ HELP_FOUNTAIN,
HOOK_MOVE,
trigger_fountain,
{ "Fountains are always magical. You can quaff from them by pressing H.",
"Beware that unlike potions they cannot be identified.",
NULL }
},
{ HELP_FOUND_OBJECT,
HOOK_MOVE,
trigger_found_object,
{ "So you found your first item! Nice, eh? Now when you stumble across",
"objects, you can pick them up by pressing g, and if you are wondering",
"what they do, press I (then *, then the letter for the item) to get",
"some basic information. You may also want to identify them with scrolls,",
"staves, rods or spells.",
NULL }
},
{ HELP_FOUND_ALTAR,
HOOK_MOVE,
trigger_found_altar,
{ "Altars are the way to reach the Valar, powers of the world,",
"usualy called Gods. You can press O to become a follower.",
"Beware that once you follow a god, you are not allowed to change.",
"For an exact description of what gods do and want, read the documentation.",
NULL }
},
{ HELP_FOUND_STAIR,
HOOK_MOVE,
trigger_found_stairs,
{ "Ah, this is a stair, or a way into something. Press > to enter it.",
"But be ready to fight what lies within, for it might not be too friendly.",
NULL }
},
{ HELP_GET_ESSENCE,
HOOK_GET,
trigger_get_essence,
{ "Ah, an essence! Those magical containers stores energies. They are used",
"with the Alchemy skill to create or modify the powers of items.",
NULL }
},
{ HELP_GET_RUNE,
HOOK_GET,
trigger_get_rune,
{ "Ah, a rune! Runes are used with the Runecraft skill to allow you to",
"create spells on your own.",
NULL
}
},
{ HELP_GET_ROD,
HOOK_GET,
trigger_get_rod,
{ "This is a rod. You will need to attach a rod tip to it before you",
"can use it. This main part of the rod may give the rod bonuses",
"like quicker charging time, or a larger capacity for charges.",
NULL
}
}
};
static bool_ triggered_help_hook(void *data, void *in, void *out)
{
triggered_help_type *triggered_help = (triggered_help_type *) data;
/* Not triggered before and trigger now? */
if ((option_ingame_help) &&
(!p_ptr->help.activated[triggered_help->help_index]) &&
triggered_help->trigger_func(in,out))
{
int i;
/* Triggered */
p_ptr->help.activated[triggered_help->help_index] = TRUE;
/* Show the description */
for (i = 0; (i < DESC_MAX) && (triggered_help->desc[i] != NULL); i++)
{
cmsg_print(TERM_YELLOW, triggered_help->desc[i]);
}
}
/* Don't stop processing */
return FALSE;
}
static void setup_triggered_help_hook(int i)
{
static int counter = 0;
char name[40];
triggered_help_type *h = &triggered_help[i];
/* Build name */
sprintf(name, "help_trigger_%d", counter);
counter++;
/* Add the hook */
add_hook_new(h->hook_type,
triggered_help_hook,
name,
h);
}
static void setup_triggered_help_hooks()
{
int i;
for (i = 0; i < TRIGGERED_HELP_MAX; i++)
{
setup_triggered_help_hook(i);
}
}
/*
* Driver for the context-sensitive help system
*/
void init_hooks_help()
{
setup_triggered_help_hooks();
}
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