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ezpp-oppai-ap/oppai.c

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/*
* this is free and unencumbered software released into the public domain.
* refer to the attached UNLICENSE or http://unlicense.org/
* -- usage: ---------------------------------------------------------------
* #define OPPAI_IMPLEMENTATION
* #include "../oppai.c"
*
* int main() {
* ezpp_t ez = ezpp_new();
* ezpp_set_mods(ez, MODS_HD | MODS_DT);
* ezpp(ez, "-");
* printf("%gpp\n", ezpp_pp(ez));
* return 0;
* }
* ------------------------------------------------------------------------
* $ gcc test.c
* $ cat /path/to/file.osu | ./a.out
*/
#if defined(_WIN32) && !defined(OPPAI_IMPLEMENTATION)
#ifdef OPPAI_EXPORT
#define OPPAIAPI __declspec(dllexport)
#elif defined(OPPAI_STATIC_HEADER)
#define OPPAIAPI
#else
#define OPPAIAPI __declspec(dllimport)
#endif
#else
#define OPPAIAPI
#endif
typedef struct ezpp* ezpp_t; /* opaque handle */
OPPAIAPI ezpp_t ezpp_new(void);
OPPAIAPI void ezpp_free(ezpp_t ez);
OPPAIAPI int ezpp(ezpp_t ez, char* map);
OPPAIAPI float ezpp_pp(ezpp_t ez);
OPPAIAPI float ezpp_stars(ezpp_t ez);
/*
* the above is all you need for basic usage. below are some advanced api's
* and usage examples
*
* - if map is "-" the map is read from standard input
* - you can use ezpp_data if you already have raw beatmap data in memory
* - if autocalc is set to 1, the results will be automatically refreshed
* when you change parameters. if reparsing is required, the last passed
* map or map data will be used
* - if map is 0 (NULL), difficulty calculation and map parsing are skipped
* and you must set at least mode, aim_stars, speed_stars, nobjects,
* base_ar, base_od, max_combo, nsliders, ncircles
* - if aim_stars or speed_stars are set difficulty calculation is also
* skipped but values are taken from map
* - setting mods or cs resets aim_stars and speed_stars, set those last
* = setting end resets accuracy_percent
* - if mode_override is set, std maps are converted to other modes
* - mode defaults to MODE_STD or the map's mode
* - mods default to MODS_NOMOD
* - combo defaults to full combo
* - nmiss defaults to 0
* - score_version defaults to scorev1
* - if accuracy_percent is set, n300/100/50 are automatically
* calculated and stored
* - if n300/100/50 are set, accuracy_percent is automatically
* calculated and stored
* - if none of the above are set, SS (100%) is assumed
* - if end is set, the map will be cut to this object index
* - if base_ar/od/cs are set, they will override the map's values
* - when you change map and you're reusing the handle, you should reset
* ar/od/cs/hp to -1 otherwise it will override them with the previous
* map's values
* - in autocalc mode, calling ezpp with a non-NULL map always resets
* ar/od/cs/hp overrides to -1 so you don't have to
*/
OPPAIAPI void ezpp_set_autocalc(ezpp_t ez, int autocalc);
OPPAIAPI int ezpp_autocalc(ezpp_t ez);
OPPAIAPI int ezpp_data(ezpp_t ez, char* data, int data_size);
OPPAIAPI float ezpp_aim_stars(ezpp_t ez);
OPPAIAPI float ezpp_speed_stars(ezpp_t ez);
OPPAIAPI float ezpp_aim_pp(ezpp_t ez);
OPPAIAPI float ezpp_speed_pp(ezpp_t ez);
OPPAIAPI float ezpp_acc_pp(ezpp_t ez);
OPPAIAPI float ezpp_accuracy_percent(ezpp_t ez);
OPPAIAPI int ezpp_n300(ezpp_t ez);
OPPAIAPI int ezpp_n100(ezpp_t ez);
OPPAIAPI int ezpp_n50(ezpp_t ez);
OPPAIAPI int ezpp_nmiss(ezpp_t ez);
OPPAIAPI float ezpp_ar(ezpp_t ez);
OPPAIAPI float ezpp_cs(ezpp_t ez);
OPPAIAPI float ezpp_od(ezpp_t ez);
OPPAIAPI float ezpp_hp(ezpp_t ez);
OPPAIAPI char* ezpp_artist(ezpp_t ez);
OPPAIAPI char* ezpp_artist_unicode(ezpp_t ez);
OPPAIAPI char* ezpp_title(ezpp_t ez);
OPPAIAPI char* ezpp_title_unicode(ezpp_t ez);
OPPAIAPI char* ezpp_version(ezpp_t ez);
OPPAIAPI char* ezpp_creator(ezpp_t ez);
OPPAIAPI int ezpp_ncircles(ezpp_t ez);
OPPAIAPI int ezpp_nsliders(ezpp_t ez);
OPPAIAPI int ezpp_nspinners(ezpp_t ez);
OPPAIAPI int ezpp_nobjects(ezpp_t ez);
OPPAIAPI float ezpp_odms(ezpp_t ez);
OPPAIAPI int ezpp_mode(ezpp_t ez);
OPPAIAPI int ezpp_combo(ezpp_t ez);
OPPAIAPI int ezpp_max_combo(ezpp_t ez);
OPPAIAPI int ezpp_mods(ezpp_t ez);
OPPAIAPI int ezpp_score_version(ezpp_t ez);
OPPAIAPI float ezpp_time_at(ezpp_t ez, int i); /* milliseconds */
OPPAIAPI float ezpp_strain_at(ezpp_t ez, int i, int difficulty_type);
OPPAIAPI int ezpp_ntiming_points(ezpp_t ez);
OPPAIAPI float ezpp_timing_time(ezpp_t ez, int i); /* milliseconds */
OPPAIAPI float ezpp_timing_ms_per_beat(ezpp_t ez, int i);
OPPAIAPI int ezpp_timing_change(ezpp_t ez, int i);
OPPAIAPI void ezpp_set_aim_stars(ezpp_t ez, float aim_stars);
OPPAIAPI void ezpp_set_speed_stars(ezpp_t ez, float speed_stars);
OPPAIAPI void ezpp_set_base_ar(ezpp_t ez, float ar);
OPPAIAPI void ezpp_set_base_od(ezpp_t ez, float od);
OPPAIAPI void ezpp_set_base_cs(ezpp_t ez, float cs);
OPPAIAPI void ezpp_set_base_hp(ezpp_t ez, float hp);
OPPAIAPI void ezpp_set_mode_override(ezpp_t ez, int mode_override);
OPPAIAPI void ezpp_set_mode(ezpp_t ez, int mode);
OPPAIAPI void ezpp_set_mods(ezpp_t ez, int mods);
OPPAIAPI void ezpp_set_combo(ezpp_t ez, int combo);
OPPAIAPI void ezpp_set_nmiss(ezpp_t ez, int nmiss);
OPPAIAPI void ezpp_set_score_version(ezpp_t ez, int score_version);
OPPAIAPI void ezpp_set_accuracy_percent(ezpp_t ez, float accuracy_percent);
OPPAIAPI void ezpp_set_accuracy(ezpp_t ez, int n100, int n50);
OPPAIAPI void ezpp_set_end(ezpp_t ez, int end);
OPPAIAPI void ezpp_set_end_time(ezpp_t ez, float end);
/*
* these will make a copy of mapfile/data and free it automatically. this
* is slow but useful when working with bindings in other langs where
* pointers to strings aren't guaranteed to persist like python3
*/
OPPAIAPI int ezpp_dup(ezpp_t ez, char* mapfile);
OPPAIAPI int ezpp_data_dup(ezpp_t ez, char* data, int data_size);
/* errors -------------------------------------------------------------- */
/*
* all functions that return int can return errors in the form
* of a negative value. check if the return value is < 0 and call
* errstr to get the error message
*/
#define ERR_MORE (-1)
#define ERR_SYNTAX (-2)
#define ERR_TRUNCATED (-3)
#define ERR_NOTIMPLEMENTED (-4)
#define ERR_IO (-5)
#define ERR_FORMAT (-6)
#define ERR_OOM (-7)
OPPAIAPI char* errstr(int err);
/* version info -------------------------------------------------------- */
OPPAIAPI void oppai_version(int* major, int* minor, int* patch);
OPPAIAPI char* oppai_version_str(void);
/* --------------------------------------------------------------------- */
#define MODE_STD 0
#define MODE_TAIKO 1
#define DIFF_SPEED 0
#define DIFF_AIM 1
#define MODS_NOMOD 0
#define MODS_NF (1<<0)
#define MODS_EZ (1<<1)
#define MODS_TD (1<<2)
#define MODS_HD (1<<3)
#define MODS_HR (1<<4)
#define MODS_SD (1<<5)
#define MODS_DT (1<<6)
#define MODS_RX (1<<7)
#define MODS_HT (1<<8)
#define MODS_NC (1<<9)
#define MODS_FL (1<<10)
#define MODS_AT (1<<11)
#define MODS_SO (1<<12)
#define MODS_AP (1<<13)
#define MODS_PF (1<<14)
#define MODS_KEY4 (1<<15) /* TODO: what are these abbreviated to? */
#define MODS_KEY5 (1<<16)
#define MODS_KEY6 (1<<17)
#define MODS_KEY7 (1<<18)
#define MODS_KEY8 (1<<19)
#define MODS_FADEIN (1<<20)
#define MODS_RANDOM (1<<21)
#define MODS_CINEMA (1<<22)
#define MODS_TARGET (1<<23)
#define MODS_KEY9 (1<<24)
#define MODS_KEYCOOP (1<<25)
#define MODS_KEY1 (1<<26)
#define MODS_KEY3 (1<<27)
#define MODS_KEY2 (1<<28)
#define MODS_SCOREV2 (1<<29)
#define MODS_TOUCH_DEVICE MODS_TD
#define MODS_NOVIDEO MODS_TD /* never forget */
#define MODS_SPEED_CHANGING (MODS_DT | MODS_HT | MODS_NC)
#define MODS_MAP_CHANGING (MODS_HR | MODS_EZ | MODS_SPEED_CHANGING)
/* this is all you need to know for normal usage. internals below */
/* ##################################################################### */
/* ##################################################################### */
/* ##################################################################### */
#ifdef OPPAI_EXPORT
#define OPPAI_IMPLEMENTATION
#endif
#ifdef OPPAI_IMPLEMENTATION
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#define OPPAI_VERSION_MAJOR 3
#define OPPAI_VERSION_MINOR 3
#define OPPAI_VERSION_PATCH 0
#define STRINGIFY_(x) #x
#define STRINGIFY(x) STRINGIFY_(x)
#define OPPAI_VERSION_STRING \
STRINGIFY(OPPAI_VERSION_MAJOR) "." \
STRINGIFY(OPPAI_VERSION_MINOR) "." \
STRINGIFY(OPPAI_VERSION_PATCH)
OPPAIAPI
void oppai_version(int* major, int* minor, int* patch) {
*major = OPPAI_VERSION_MAJOR;
*minor = OPPAI_VERSION_MINOR;
*patch = OPPAI_VERSION_PATCH;
}
OPPAIAPI
char* oppai_version_str() {
return OPPAI_VERSION_STRING;
}
/* error utils --------------------------------------------------------- */
int info(char* fmt, ...) {
int res;
va_list va;
va_start(va, fmt);
res = vfprintf(stderr, fmt, va);
va_end(va);
return res;
}
OPPAIAPI
char* errstr(int err) {
switch (err) {
case ERR_MORE: return "call me again with more data";
case ERR_SYNTAX: return "syntax error";
case ERR_TRUNCATED:
return "data was truncated, possibly because it was too big";
case ERR_NOTIMPLEMENTED:
return "requested a feature that isn't implemented";
case ERR_IO: return "i/o error";
case ERR_FORMAT: return "invalid input format";
case ERR_OOM: return "out of memory";
}
info("W: got unknown error %d\n", err);
return "unknown error";
}
/* math ---------------------------------------------------------------- */
#define log10f (float)log10
#define al_round(x) (float)floor((x) + 0.5f)
#define al_min(a, b) ((a) < (b) ? (a) : (b))
#define al_max(a, b) ((a) > (b) ? (a) : (b))
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
float get_inf(void) {
static unsigned raw = 0x7F800000;
float* p = (float*)&raw;
return *p;
}
float get_nan(void) {
static unsigned raw = 0x7FFFFFFF;
float* p = (float*)&raw;
return *p;
}
/* dst = a - b */
void v2f_sub(float* dst, float* a, float* b) {
dst[0] = a[0] - b[0];
dst[1] = a[1] - b[1];
}
float v2f_len(float* v) {
return (float)sqrt(v[0] * v[0] + v[1] * v[1]);
}
float v2f_dot(float* a, float* b) {
return a[0] * b[0] + a[1] * b[1];
}
/* https://www.doc.ic.ac.uk/%7Eeedwards/compsys/float/nan.html */
int is_nan(float b) {
unsigned* p = (void*)&b;
return (
(*p > 0x7F800000 && *p < 0x80000000) ||
(*p > 0x7FBFFFFF && *p <= 0xFFFFFFFF)
);
}
/* https://www.doc.ic.ac.uk/%7Eeedwards/compsys/float/nan.html */
int is_inf(float b) {
int* p = (int*)&b;
return *p == 0x7F800000 || *p == 0xFF800000;
}
/* string utils -------------------------------------------------------- */
int whitespace(char c) {
switch (c) {
case '\r':
case '\n':
case '\t':
case ' ':
return 1;
}
return 0;
}
/* non-null terminated string, used internally for parsing */
typedef struct slice {
char* start;
char* end; /* *(end - 1) is the last character */
} slice_t;
int slice_write(slice_t* s, FILE* f) {
return (int)fwrite(s->start, 1, s->end - s->start, f);
}
int slice_whitespace(slice_t* s) {
char* p = s->start;
for (; p < s->end; ++p) {
if (!whitespace(*p)) {
return 0;
}
}
return 1;
}
/* trims leading and trailing whitespace */
void slice_trim(slice_t* s) {
for (; s->start < s->end && whitespace(*s->start); ++s->start);
for (; s->end > s->start && whitespace(*(s->end-1)); --s->end);
}
int slice_cmp(slice_t* s, char* str) {
int len = (int)strlen(str);
int s_len = (int)(s->end - s->start);
if (len < s_len) {
return -1;
}
if (len > s_len) {
return 1;
}
return strncmp(s->start, str, len);
}
int slice_len(slice_t* s) {
return (int)(s->end - s->start);
}
/*
* splits s at any of the separators in separator_list and stores
* pointers to the strings in arr.
* returns the number of elements written to arr.
* if more elements than nmax are found, err is set to
* ERR_TRUNCATED
*/
int slice_split(slice_t* s, char* separator_list, slice_t* arr,
int nmax, int* err)
{
int res = 0;
char* p = s->start;
char* pprev = p;
if (!nmax) {
return 0;
}
if (!*separator_list) {
*arr = *s;
return 1;
}
for (; p <= s->end; ++p) {
char* sep = separator_list;
for (; *sep; ++sep) {
if (p >= s->end || *sep == *p) {
if (res >= nmax) {
*err = ERR_TRUNCATED;
goto exit;
}
arr[res].start = pprev;
arr[res].end = p;
pprev = p + 1;
++res;
break;
}
}
}
exit:
return res;
}
/* array --------------------------------------------------------------- */
#define array_t(type) \
struct { \
int cap; \
int len; \
type* data; \
}
#define array_reserve(arr, n) \
array_reserve_i(n, array_unpack(arr))
#define array_free(arr) \
array_free_i(array_unpack(arr))
#define array_alloc(arr) \
(array_reserve((arr), (arr)->len + 1) \
? &(arr)->data[(arr)->len++] \
: 0)
#define array_append(arr, x) \
(array_reserve((arr), (arr)->len + 1) \
? ((arr)->data[(arr)->len++] = (x), 1) \
: 0)
/* internal helpers, not to be used directly */
#define array_unpack(arr) \
&(arr)->cap, \
&(arr)->len, \
(void**)&(arr)->data, \
(int)sizeof((arr)->data[0])
int array_reserve_i(int n, int* cap, int* len, void** data, int esize) {
(void)len;
if (*cap <= n) {
void* newdata;
int newcap = *cap ? *cap * 2 : 16;
newdata = realloc(*data, esize * newcap);
if (!newdata) {
return 0;
}
*data = newdata;
*cap = newcap;
}
return 1;
}
void array_free_i(int* cap, int* len, void** data, int esize) {
(void)esize;
free(*data);
*cap = 0;
*len = 0;
*data = 0;
}
/* --------------------------------------------------------------------- */
#define OBJ_CIRCLE (1<<0)
#define OBJ_SLIDER (1<<1)
#define OBJ_SPINNER (1<<3)
#define SOUND_NONE 0
#define SOUND_NORMAL (1<<0)
#define SOUND_WHISTLE (1<<1)
#define SOUND_FINISH (1<<2)
#define SOUND_CLAP (1<<3)
typedef struct timing {
float time; /* milliseconds */
float ms_per_beat;
int change; /* if 0, ms_per_beat is -100.0f * sv_multiplier */
float px_per_beat;
/* taiko stuff */
float beat_len;
float velocity;
} timing_t;
typedef struct object {
float time; /* milliseconds */
int type;
/* only for taiko maps */
int nsound_types;
int* sound_types;
/* only used by d_calc */
float normpos[2];
float angle;
float strains[2];
int is_single; /* 1 if diff calc sees this as a singletap */
float delta_time;
float d_distance;
int timing_point;
float pos[2];
float distance; /* only for sliders */
int repetitions;
/* taiko stuff */
float duration;
float tick_spacing;
int slider_is_drum_roll;
} object_t;
/*
* exposing the struct would cut down lines of code but makes it harder
* to use from langs that aren't c/c++ or don't have the same memory
* alignment etc
*/
#define AUTOCALC_BIT (1<<0)
#define OWNS_MAP_BIT (1<<1) /* map/data freed on ezpp{,_data}, ezpp_free */
struct ezpp {
char* map;
char* data;
int data_size;
int flags;
int format_version;
int mode, mode_override, original_mode;
int score_version;
int mods, combo;
float accuracy_percent;
int n300, n100, n50, nmiss;
int end;
float end_time;
float base_ar, base_cs, base_od, base_hp;
int max_combo;
char* title;
char* title_unicode;
char* artist;
char* artist_unicode;
char* creator;
char* version;
int ncircles, nsliders, nspinners, nobjects;
float ar, od, cs, hp, odms, sv, tick_rate, speed_mul;
float stars;
float aim_stars, aim_difficulty, aim_length_bonus;
float speed_stars, speed_difficulty, speed_length_bonus;
float pp, aim_pp, speed_pp, acc_pp;
/* parser */
char section[64];
char buf[0xFFFF];
int p_flags;
array_t(object_t) objects;
array_t(timing_t) timing_points;
/* diffcalc */
float interval_end;
float max_strain;
array_t(float) highest_strains;
/* allocator */
char* block;
char* end_of_block;
array_t(char*) blocks;
};
/* memory arena (allocator) -------------------------------------------- */
#define M_ALIGN sizeof(void*)
#define M_BLOCK_SIZE 4096
/* aligns x down to a power-of-two value a */
#define bit_align_down(x, a) \
((x) & ~((a) - 1))
/* aligns x up to a power-of-two value a */
#define bit_align_up(x, a) \
bit_align_down((x) + (a) - 1, a)
int m_reserve(ezpp_t ez, int min_size) {
int size;
char* new_block;
if (ez->end_of_block - ez->block >= min_size) {
return 1;
}
size = bit_align_up(al_max(min_size, M_BLOCK_SIZE), M_ALIGN);
new_block = malloc(size);
if (!new_block) {
return 0;
}
ez->block = new_block;
ez->end_of_block = new_block + size;
array_append(&ez->blocks, ez->block);
return 1;
}
void* m_alloc(ezpp_t ez, int size) {
void* res;
if (!m_reserve(ez, size)) {
return 0;
}
size = bit_align_up(size, M_ALIGN);
res = ez->block;
ez->block += size;
return res;
}
char* m_strndup(ezpp_t ez, char* s, int n) {
char* res = m_alloc(ez, n + 1);
if (res) {
memcpy(res, s, n);
res[n] = 0;
}
return res;
}
void m_free(ezpp_t ez) {
int i;
for (i = 0; i < ez->blocks.len; ++i) {
free(ez->blocks.data[i]);
}
array_free(&ez->blocks);
ez->block = 0;
ez->end_of_block = 0;
}
/* mods ---------------------------------------------------------------- */
float od10_ms[] = { 20, 20 }; /* std, taiko */
float od0_ms[] = { 80, 50 };
#define AR0_MS 1800.0f
#define AR5_MS 1200.0f
#define AR10_MS 450.0f
float od_ms_step[] = { 6.0f, 3.0f };
#define AR_MS_STEP1 120.f /* ar0-5 */
#define AR_MS_STEP2 150.f /* ar5-10 */
/*
* stats must be capped to 0-10 before HT/DT which brings them to a range
* of -4.42f to 11.08f for OD and -5 to 11 for AR
*/
int mods_apply(ezpp_t ez) {
float od_ar_hp_multiplier, cs_multiplier, arms;
switch (ez->mode) {
case MODE_STD:
case MODE_TAIKO:
break;
default:
info("this gamemode is not yet supported for mods calc\n");
return ERR_NOTIMPLEMENTED;
}
ez->speed_mul = 1;
if (!(ez->mods & MODS_MAP_CHANGING)) {
ez->odms = od0_ms[ez->mode] - (float)ceil(od_ms_step[ez->mode] * ez->od);
return 0;
}
if (ez->mods & (MODS_DT | MODS_NC)) {
ez->speed_mul *= 1.5f;
}
if (ez->mods & MODS_HT) {
ez->speed_mul *= 0.75f;
}
/* global multipliers */
od_ar_hp_multiplier = 1;
if (ez->mods & MODS_HR) od_ar_hp_multiplier *= 1.4f;
if (ez->mods & MODS_EZ) od_ar_hp_multiplier *= 0.5f;
ez->od *= od_ar_hp_multiplier;
ez->odms = od0_ms[ez->mode] - (float)ceil(od_ms_step[ez->mode] * ez->od);
ez->odms = al_min(od0_ms[ez->mode], al_max(od10_ms[ez->mode], ez->odms));
ez->odms /= ez->speed_mul;
ez->od = (od0_ms[ez->mode] - ez->odms) / od_ms_step[ez->mode];
ez->ar *= od_ar_hp_multiplier;
arms = ez->ar <= 5
? (AR0_MS - AR_MS_STEP1 * (ez->ar - 0))
: (AR5_MS - AR_MS_STEP2 * (ez->ar - 5));
arms = al_min(AR0_MS, al_max(AR10_MS, arms));
arms /= ez->speed_mul;
ez->ar = arms > AR5_MS
? (0 + (AR0_MS - arms) / AR_MS_STEP1)
: (5 + (AR5_MS - arms) / AR_MS_STEP2);
cs_multiplier = 1;
if (ez->mods & MODS_HR) cs_multiplier = 1.3f;
if (ez->mods & MODS_EZ) cs_multiplier = 0.5f;
ez->cs *= cs_multiplier;
ez->cs = al_max(0.0f, al_min(10.0f, ez->cs));
ez->hp = al_min(ez->hp * od_ar_hp_multiplier, 10);
return 0;
}
/* beatmap parser ------------------------------------------------------ */
/*
* comments in beatmaps can only be an entire line because
* some properties such as author can contain //
*
* all p_* functions expect s to be a single line and trimmed
* on errors, p_* functions return < 0 error codes otherwise they
* return n bytes consumed
*/
#define P_OVERRIDE_MODE (1<<0) /* mode_override */
#define P_FOUND_AR (1<<1)
#define CIRCLESIZE_BUFF_TRESHOLD 30.0f /* non-normalized diameter */
#define PLAYFIELD_WIDTH 512.0f /* in osu!pixels */
#define PLAYFIELD_HEIGHT 384.0f
float playfield_center[] = {
PLAYFIELD_WIDTH / 2.0f, PLAYFIELD_HEIGHT / 2.0f
};
void print_line(slice_t* line) {
info("in line: ");
slice_write(line, stderr);
info("\n");
}
int p_warn(char* e, slice_t* line) {
info(e);
info("\n");
print_line(line);
return 0;
}
/* consume until any of the characters in separators is found */
int p_consume_til(slice_t* s, char* separators, slice_t* dst) {
char* p = s->start;
dst->start = s->start;
for (; p < s->end; ++p) {
char* sep;
for (sep = separators; *sep; ++sep) {
if (*p == *sep) {
dst->start = s->start;
dst->end = p;
return (int)(p - s->start);
}
}
}
dst->end = p;
return ERR_MORE;
}
float p_float(slice_t* value) {
float res;
char* p = value->start;
if (*p == '-') {
res = -1;
++p;
} else {
res = 1;
}
/* infinity symbol */
if (!strncmp(p, "\xe2\x88\x9e", 3)) {
res *= get_inf();
} else {
if (sscanf(value->start, "%f", &res) != 1) {
info("W: failed to parse float ");
slice_write(value, stderr);
info("\n");
res = 0;
}
}
return res;
}
/* [name] */
int p_section_name(slice_t* s, slice_t* name) {
int n;
slice_t p = *s;
if (*p.start++ != '[') {
return ERR_SYNTAX;
}
n = p_consume_til(&p, "]", name);
if (n < 0) {
return n;
}
p.start += n;
if (p.start != p.end - 1) { /* must end in ] */
return ERR_SYNTAX;
}
return (int)(p.start - s->start);
}
/* name: value (results are trimmed) */
int p_property(slice_t* s, slice_t* name, slice_t* value) {
int n;
char* p = s->start;
n = p_consume_til(s, ":", name);
if (n < 0) {
return n;
}
p += n;
++p; /* skip : */
value->start = p;
value->end = s->end;
slice_trim(name);
slice_trim(value);
return (int)(s->end - s->start);
}
char* p_slicedup(ezpp_t ez, slice_t* s) {
return m_strndup(ez, s->start, slice_len(s));
}
int p_metadata(ezpp_t ez, slice_t* line) {
slice_t name, value;
int n = p_property(line, &name, &value);
if (n < 0) {
return p_warn("W: malformed metadata line", line);
}
if (!slice_cmp(&name, "Title")) {
ez->title = p_slicedup(ez, &value);
} else if (!slice_cmp(&name, "TitleUnicode")) {
ez->title_unicode = p_slicedup(ez, &value);
} else if (!slice_cmp(&name, "Artist")) {
ez->artist = p_slicedup(ez, &value);
} else if (!slice_cmp(&name, "ArtistUnicode")) {
ez->artist_unicode = p_slicedup(ez, &value);
} else if (!slice_cmp(&name, "Creator")) {
ez->creator = p_slicedup(ez, &value);
} else if (!slice_cmp(&name, "Version")) {
ez->version = p_slicedup(ez, &value);
}
return n;
}
int p_general(ezpp_t ez, slice_t* line) {
slice_t name, value;
int n;
n = p_property(line, &name, &value);
if (n < 0) {
return p_warn("W: malformed general line", line);
}
if (!slice_cmp(&name, "Mode")) {
if (sscanf(value.start, "%d", &ez->original_mode) != 1){
return ERR_SYNTAX;
}
if (ez->p_flags & P_OVERRIDE_MODE) {
ez->mode = ez->mode_override;
} else {
ez->mode = ez->original_mode;
}
switch (ez->mode) {
case MODE_STD:
case MODE_TAIKO:
break;
default:
return ERR_NOTIMPLEMENTED;
}
}
return n;
}
int p_difficulty(ezpp_t ez, slice_t* line) {
slice_t name, value;
int n = p_property(line, &name, &value);
if (n < 0) {
return p_warn("W: malformed difficulty line", line);
}
if (!slice_cmp(&name, "CircleSize")) {
ez->cs = p_float(&value);
} else if (!slice_cmp(&name, "OverallDifficulty")) {
ez->od = p_float(&value);
} else if (!slice_cmp(&name, "ApproachRate")) {
ez->ar = p_float(&value);
ez->p_flags |= P_FOUND_AR;
} else if (!slice_cmp(&name, "HPDrainRate")) {
ez->hp = p_float(&value);
} else if (!slice_cmp(&name, "SliderMultiplier")) {
ez->sv = p_float(&value);
} else if (!slice_cmp(&name, "SliderTickRate")) {
ez->tick_rate = p_float(&value);
}
return n;
}
/*
* time, ms_per_beat, time_signature_id, sample_set_id,
* sample_bank_id, sample_volume, is_timing_change, effect_flags
*
* everything after ms_per_beat is optional
*/
int p_timing(ezpp_t ez, slice_t* line) {
int res = 0;
int n, i;
int err = 0;
slice_t split[8];
timing_t* t = array_alloc(&ez->timing_points);
if (!t) {
return ERR_OOM;
}
t->change = 1;
n = slice_split(line, ",", split, 8, &err);
if (err < 0) {
if (err == ERR_TRUNCATED) {
info("W: timing point with trailing values");
print_line(line);
} else {
return err;
}
}
if (n < 2) {
return p_warn("W: malformed timing point", line);
}
res = (int)(split[n - 1].end - line->start);
for (i = 0; i < n; ++i) {
slice_trim(&split[i]);
}
t->time = p_float(&split[0]);
t->ms_per_beat = p_float(&split[1]);
if (n >= 7) {
if (slice_len(&split[6]) < 1) {
t->change = 1;
} else {
t->change = *split[6].start != '0';
}
}
return res;
}
int p_objects(ezpp_t ez, slice_t* line) {
object_t* o;
int err = 0;
int ne;
slice_t e[11];
if (ez->end > 0 && ez->objects.len >= ez->end) {
return 0;
}
o = array_alloc(&ez->objects);
if (o) {
memset(o, 0, sizeof(*o));
} else {
return ERR_OOM;
}
ne = slice_split(line, ",", e, 11, &err);
if (err < 0) {
if (err == ERR_TRUNCATED) {
info("W: object with trailing values\n");
print_line(line);
} else {
return err;
}
}
if (ne < 5) {
return p_warn("W: malformed hitobject", line);
}
o->time = p_float(&e[2]);
if (is_inf(o->time)) {
o->time = 0.0f;
info("W: object with infinite time\n");
print_line(line);
}
if (ez->end_time > 0 && o->time >= ez->end_time) {
--ez->objects.len;
return 0;
}
if (sscanf(e[3].start, "%d", &o->type) != 1) {
p_warn("W: malformed hitobject type", line);
o->type = OBJ_CIRCLE;
}
if (ez->mode == MODE_TAIKO) {
int* sound_type = m_alloc(ez, sizeof(int));
if (!sound_type) {
return ERR_OOM;
}
if (sscanf(e[4].start, "%d", sound_type) != 1) {
p_warn("W: malformed hitobject sound type", line);
*sound_type = SOUND_NORMAL;
}
o->nsound_types = 1;
o->sound_types = sound_type;
/* wastes 4 bytes when you have per-node sounds but w/e */
}
if (o->type & OBJ_CIRCLE) {
++ez->ncircles;
o->pos[0] = p_float(&e[0]);
o->pos[1] = p_float(&e[1]);
}
/* ?,?,?,?,?,end_time,custom_sample_banks */
else if (o->type & OBJ_SPINNER) {
++ez->nspinners;
}
/*
* x,y,time,type,sound_type,points,repetitions,distance,
* per_node_sounds,per_node_samples,custom_sample_banks
*/
else if (o->type & OBJ_SLIDER) {
++ez->nsliders;
if (ne < 7) {
return p_warn("W: malformed slider", line);
}
o->pos[0] = p_float(&e[0]);
o->pos[1] = p_float(&e[1]);
if (sscanf(e[6].start, "%d", &o->repetitions) != 1) {
o->repetitions = 1;
p_warn("W: malformed slider repetitions", line);
}
if (ne > 7) {
o->distance = p_float(&e[7]);
} else {
o->distance = 0;
}
/* per-node sound types */
if (ez->mode == MODE_TAIKO && ne > 8 && slice_len(&e[8]) > 0) {
slice_t p = e[8];
int i, nodes;
int sound_type = o->sound_types[0];
/*
* TODO: there's probably something subtly wrong with this.
* sometimes we get less sound types than nodes
* also I don't know if I'm supposed to include the previous
* sound type from the single sound_type field
*/
/* repeats + head and tail. no repeats is 0 repetition */
nodes = o->repetitions + 1;
if (nodes < 0 || nodes > 1000) {
/* TODO: not sure if 1000 limit is enough */
p_warn("W: malformed node count", line);
return ERR_SYNTAX;
}
o->sound_types = m_alloc(ez, sizeof(int) * nodes);
if (!o->sound_types) {
return ERR_OOM;
}
o->nsound_types = nodes;
for (i = 0; i < nodes; ++i) {
o->sound_types[i] = sound_type;
}
for (i = 0; i < nodes; ++i) {
slice_t node;
int n;
int type;
node.start = node.end = 0;
n = p_consume_til(&p, "|", &node);
if (n < 0 && n != ERR_MORE) {
return n;
}
if (node.start >= node.end || !node.start) {
break;
}
p.start += n + 1;
if (sscanf(node.start, "%d", &type) != 1) {
p_warn("W: malformed sound type", line);
break;
}
o->sound_types[i] = type;
if (p.start >= p.end) {
break;
}
}
}
}
return (int)(e[ne - 1].end - line->start);
}
int p_line(ezpp_t ez, slice_t* line) {
int n = 0;
if (line->start >= line->end) {
/* empty line */
return 0;
}
if (slice_whitespace(line)) {
return (int)(line->end - line->start);
}
/* comments (according to lazer) */
switch (*line->start) {
case ' ':
case '_':
return (int)(line->end - line->start);
}
/* from here on we don't care about leading or trailing whitespace */
slice_trim(line);
/* C++ style comments */
if (!strncmp(line->start, "//", 2)) {
return 0;
}
/* new section */
if (*line->start == '[') {
slice_t section;
int len;
n = p_section_name(line, &section);
if (n < 0) {
return n;
}
if ((int)(section.end - section.start) >= (int)sizeof(ez->section)) {
p_warn("W: truncated long section name", line);
}
len = al_min((int)sizeof(ez->section) - 1,
(int)(section.end - section.start));
memcpy(ez->section, section.start, len);
ez->section[len] = 0;
return n;
}
if (!strcmp(ez->section, "Metadata")) {
n = p_metadata(ez, line);
} else if (!strcmp(ez->section, "General")) {
n = p_general(ez, line);
} else if (!strcmp(ez->section, "Difficulty")) {
n = p_difficulty(ez, line);
} else if (!strcmp(ez->section, "TimingPoints")) {
n = p_timing(ez, line);
} else if (!strcmp(ez->section, "HitObjects")) {
n = p_objects(ez, line);
} else {
char* p = line->start;
char* fmt_str = "file format v";
for (; p < line->end && strncmp(p, fmt_str, 13); ++p);
p += 13;
if (p < line->end) {
if (sscanf(p, "%d", &ez->format_version) == 1) {
return (int)(line->end - line->start);
}
}
}
return n;
}
void p_end(ezpp_t ez) {
int i;
float infinity = get_inf();
float tnext = -infinity;
int tindex = -1;
float ms_per_beat = infinity;
float radius, scaling_factor;
float legacy_multiplier = 1;
if (!(ez->p_flags & P_FOUND_AR)) {
/* in old maps ar = od */
ez->ar = ez->od;
}
if (!ez->title_unicode) {
ez->title_unicode = ez->title;
}
if (!ez->artist_unicode) {
ez->artist_unicode = ez->artist;
}
#define s(x) ez->x = ez->x ? ez->x : "(null)"
s(title);
s(title_unicode);
s(artist);
s(artist_unicode);
s(creator);
s(version);
#undef s
if (ez->base_ar < 0) ez->base_ar = ez->ar;
else ez->ar = ez->base_ar;
if (ez->base_cs < 0) ez->base_cs = ez->cs;
else ez->cs = ez->base_cs;
if (ez->base_od < 0) ez->base_od = ez->od;
else ez->od = ez->base_od;
if (ez->base_hp < 0) ez->base_hp = ez->hp;
else ez->hp = ez->base_hp;
mods_apply(ez);
if (ez->mode == MODE_TAIKO && ez->mode != ez->original_mode) {
legacy_multiplier = 1.4f;
ez->sv *= legacy_multiplier;
}
for (i = 0; i < ez->timing_points.len; ++i) {
timing_t* t = &ez->timing_points.data[i];
float sv_multiplier = 1.0f;
if (t->change) {
ms_per_beat = t->ms_per_beat;
}
if (!t->change && t->ms_per_beat < 0) {
sv_multiplier = -100.0f / t->ms_per_beat;
}
t->beat_len = ms_per_beat / sv_multiplier;
t->px_per_beat = ez->sv * 100.0f;
t->velocity = 100.0f * ez->sv / t->beat_len;
if (ez->format_version >= 8) {
t->beat_len *= sv_multiplier;
t->px_per_beat *= sv_multiplier;
}
}
/*
* sliders get 2 + ticks combo (head, tail and ticks) each repetition adds
* an extra combo and an extra set of ticks
*
* calculate the number of slider ticks for one repetition
* ---
* example: a 3.75f beats slider at 1x tick rate will go:
* beat0 (head), beat1 (tick), beat2(tick), beat3(tick),
* beat3.75f(tail)
* so all we have to do is ceil the number of beats and subtract 1 to take
* out the tail
* ---
* the -0.1f is there to prevent ceil from ceiling whole values like 1.0f to
* 2.0f randomly
*/
ez->nobjects = ez->objects.len;
ez->max_combo = ez->nobjects;
/* spinners don't give combo in taiko */
if (ez->mode == MODE_TAIKO) {
ez->max_combo -= ez->nspinners + ez->nsliders;
}
/*
* positions are normalized on circle radius so that we
* can calc as if everything was the same circlesize
* this should really be in diffcalc functions but putting it here
* makes it so that i only traverse the hitobjects twice in total
*/
radius = (
(PLAYFIELD_WIDTH / 16.0f) *
(1.0f - 0.7f * ((float)ez->cs - 5.0f) / 5.0f)
);
scaling_factor = 52.0f / radius;
/* cs buff (originally from osuElements) */
if (radius < CIRCLESIZE_BUFF_TRESHOLD) {
scaling_factor *=
1.0f + al_min((CIRCLESIZE_BUFF_TRESHOLD - radius), 5.0f) / 50.0f;
}
for (i = 0; i < ez->objects.len; ++i) {
object_t* o = &ez->objects.data[i];
timing_t* t;
int ticks;
float num_beats;
float* pos;
float dot, det;
if (o->type & OBJ_SPINNER) {
pos = playfield_center;
} else {
/* sliders also begin with pos so it's fine */
pos = o->pos;
}
o->normpos[0] = pos[0] * scaling_factor;
o->normpos[1] = pos[1] * scaling_factor;
/* angle data */
if (i >= 2) {
object_t* prev1 = &ez->objects.data[i - 1];
object_t* prev2 = &ez->objects.data[i - 2];
float v1[2], v2[2];
v2f_sub(v1, prev2->normpos, prev1->normpos);
v2f_sub(v2, o->normpos, prev1->normpos);
dot = v2f_dot(v1, v2);
det = v1[0] * v2[1] - v1[1] * v2[0];
o->angle = (float)fabs(atan2(det, dot));
} else {
o->angle = get_nan();
}
/* keep track of the current timing point */
while (o->time >= tnext) {
++tindex;
if (tindex + 1 < ez->timing_points.len) {
tnext = ez->timing_points.data[tindex + 1].time;
} else {
tnext = infinity;
}
}
o->timing_point = tindex;
t = &ez->timing_points.data[tindex];
if (!(o->type & OBJ_SLIDER)) {
continue;
}
o->duration = o->distance * o->repetitions / t->velocity;
o->duration *= legacy_multiplier;
o->tick_spacing = al_min(t->beat_len / ez->tick_rate,
o->duration / o->repetitions);
o->slider_is_drum_roll = (
o->tick_spacing > 0 && o->duration < 2 * t->beat_len
);
/* slider ticks for max_combo */
switch (ez->mode) {
case MODE_TAIKO: {
if (o->slider_is_drum_roll && ez->mode != ez->original_mode) {
ez->max_combo += (int)(
ceil((o->duration + o->tick_spacing / 8) / o->tick_spacing)
);
}
break;
}
case MODE_STD:
/* std slider ticks */
num_beats = (o->distance * o->repetitions) / t->px_per_beat;
ticks = (int)ceil(
(num_beats - 0.1f) / o->repetitions * ez->tick_rate
);
--ticks;
ticks *= o->repetitions; /* account for repetitions */
ticks += o->repetitions + 1; /* add heads and tails */
/*
* actually doesn't include first head because we already
* added it by setting res = nobjects
*/
ez->max_combo += al_max(0, ticks - 1);
break;
}
}
}
void p_reset(ezpp_t ez) {
ez->ncircles = ez->nsliders = ez->nspinners = ez->nobjects = 0;
ez->objects.len = 0;
ez->timing_points.len = 0;
m_free(ez);
memset(ez->section, 0, sizeof(ez->section));
}
int p_map(ezpp_t ez, FILE* f) {
char* p;
char* bufend;
int c, n;
slice_t line;
if (!f) {
return ERR_IO;
}
p_reset(ez);
/* reading loop */
bufend = ez->buf + sizeof(ez->buf) - 1;
do {
p = ez->buf;
for (;;) {
if (p >= bufend) {
return ERR_TRUNCATED;
}
c = fgetc(f);
if (c == '\n' || c == EOF) {
break;
}
*p++ = (char)c;
}
*p = 0;
line.start = ez->buf;
line.end = p;
n = p_line(ez, &line);
if (n < 0) {
return n;
}
} while (c != EOF);
p_end(ez);
ez->nobjects = ez->objects.len;
return (int)(p - ez->buf);
}
/* TODO: see if i can shrink this function */
int p_map_mem(ezpp_t ez, char* data, int data_size) {
int res = 0;
int n;
int nlines = 0; /* complete lines in the current chunk */
slice_t s; /* points to the remaining data in buf */
if (!data || data_size == 0) {
return ERR_IO;
}
p_reset(ez);
s.start = data;
s.end = data + data_size;
/* parsing loop */
for (; s.start < s.end; ) {
slice_t line;
n = p_consume_til(&s, "\n", &line);
if (n < 0) {
if (n != ERR_MORE) {
return n;
}
if (!nlines) {
/* line doesn't fit the entire buffer */
return ERR_TRUNCATED;
}
/* EOF, so we must process the remaining data as a line */
line = s;
n = (int)(s.end - s.start);
} else {
++n; /* also skip the \n */
}
res += n;
s.start += n;
++nlines;
n = p_line(ez, &line);
if (n < 0) {
return n;
}
res += n;
}
p_end(ez);
return res;
}
/* diff calc ----------------------------------------------------------- */
/* based on tom94's osu!tp aimod and osuElements */
#define SINGLE_SPACING 125.0f
#define STAR_SCALING_FACTOR 0.0675f /* star rating multiplier */
#define EXTREME_SCALING_FACTOR 0.5f /* used to mix aim/speed stars */
#define STRAIN_STEP 400.0f /* diffcalc uses peak strains of 400ms chunks */
#define DECAY_WEIGHT 0.9f /* peak strains are added in a weighed sum */
#define MAX_SPEED_BONUS 45.0f /* ~330BPM 1/4 streams */
#define MIN_SPEED_BONUS 75.0f /* ~200BPM 1/4 streams */
#define ANGLE_BONUS_SCALE 90
#define AIM_TIMING_THRESHOLD 107
#define SPEED_ANGLE_BONUS_BEGIN (5 * M_PI / 6)
#define AIM_ANGLE_BONUS_BEGIN (M_PI / 3)
float decay_base[] = { 0.3f, 0.15f }; /* strains decay per interval */
float weight_scaling[] = { 1400.0f, 26.25f }; /* balances aim/speed */
/*
* TODO: unbloat these params
* this function has become a mess with the latest changes, I should split
* it into separate funcs for speed and im
*/
float d_spacing_weight(float distance, float delta_time,
float prev_distance, float prev_delta_time,
float angle, int type, int* is_single)
{
float angle_bonus;
float strain_time = al_max(delta_time, 50.0f);
switch (type) {
case DIFF_SPEED: {
float speed_bonus;
*is_single = distance > SINGLE_SPACING;
distance = al_min(distance, SINGLE_SPACING);
delta_time = al_max(delta_time, MAX_SPEED_BONUS);
speed_bonus = 1.0f;
if (delta_time < MIN_SPEED_BONUS) {
speed_bonus += (float)
pow((MIN_SPEED_BONUS - delta_time) / 40.0f, 2);
}
angle_bonus = 1.0f;
if (!is_nan(angle) && angle < SPEED_ANGLE_BONUS_BEGIN) {
float s = (float)sin(1.5 * (SPEED_ANGLE_BONUS_BEGIN - angle));
angle_bonus += (float)pow(s, 2) / 3.57f;
if (angle < M_PI / 2) {
angle_bonus = 1.28f;
if (distance < ANGLE_BONUS_SCALE && angle < M_PI / 4) {
angle_bonus += (1 - angle_bonus)
* al_min((ANGLE_BONUS_SCALE - distance) / 10, 1);
}
else if (distance < ANGLE_BONUS_SCALE) {
angle_bonus += (1 - angle_bonus)
* al_min((ANGLE_BONUS_SCALE - distance) / 10, 1)
* (float)sin((M_PI / 2 - angle) * 4 / M_PI);
}
}
}
return (
(1 + (speed_bonus - 1) * 0.75f) *
angle_bonus *
(0.95f + speed_bonus * (float)pow(distance / SINGLE_SPACING, 3.5))
) / strain_time;
}
case DIFF_AIM: {
float result = 0;
float weighted_distance;
float prev_strain_time = al_max(prev_delta_time, 50.0f);
if (!is_nan(angle) && angle > AIM_ANGLE_BONUS_BEGIN) {
angle_bonus = (float)sqrt(
al_max(prev_distance - ANGLE_BONUS_SCALE, 0)
* pow(sin(angle - AIM_ANGLE_BONUS_BEGIN), 2)
* al_max(distance - ANGLE_BONUS_SCALE, 0)
);
result = 1.5f * (float)pow(al_max(0, angle_bonus), 0.99)
/ al_max(AIM_TIMING_THRESHOLD, prev_strain_time);
}
weighted_distance = (float)pow(distance, 0.99);
return al_max(
result + weighted_distance /
al_max(AIM_TIMING_THRESHOLD, strain_time),
weighted_distance / strain_time
);
}
}
return 0.0f;
}
void d_calc_strain(int type, object_t* o, object_t* prev, float speedmul) {
float res = 0;
float time_elapsed = (o->time - prev->time) / speedmul;
float decay = (float)pow(decay_base[type], time_elapsed / 1000.0f);
float scaling = weight_scaling[type];
o->delta_time = time_elapsed;
/* this implementation doesn't account for sliders */
if (o->type & (OBJ_SLIDER | OBJ_CIRCLE)) {
float diff[2];
v2f_sub(diff, o->normpos, prev->normpos);
o->d_distance = v2f_len(diff);
res = d_spacing_weight(o->d_distance, time_elapsed, prev->d_distance,
prev->delta_time, o->angle, type, &o->is_single);
res *= scaling;
}
o->strains[type] = prev->strains[type] * decay + res;
}
#if defined(_WIN32)
#define FORCECDECL __cdecl
#else
#define FORCECDECL
#endif
int FORCECDECL dbl_desc(void const* a, void const* b) {
float x = *(float const*)a;
float y = *(float const*)b;
if (x < y) return 1;
if (x == y) return 0;
return -1;
}
int d_update_max_strains(ezpp_t ez, float decay_factor,
float cur_time, float prev_time, float cur_strain, float prev_strain,
int first_obj)
{
/* make previous peak strain decay until the current obj */
while (cur_time > ez->interval_end) {
if (!array_append(&ez->highest_strains, ez->max_strain)) {
return ERR_OOM;
}
if (first_obj) {
ez->max_strain = 0;
} else {
float decay;
decay = (float)pow(decay_factor,
(ez->interval_end - prev_time) / 1000.0f);
ez->max_strain = prev_strain * decay;
}
ez->interval_end += STRAIN_STEP * ez->speed_mul;
}
ez->max_strain = al_max(ez->max_strain, cur_strain);
return 0;
}
void d_weigh_strains(ezpp_t ez, float* pdiff, float* ptotal) {
int i;
int nstrains = 0;
float* strains;
float total = 0;
float difficulty = 0;
float weight = 1.0f;
strains = (float*)ez->highest_strains.data;
nstrains = ez->highest_strains.len;
/* sort strains from highest to lowest */
qsort(strains, nstrains, sizeof(float), dbl_desc);
for (i = 0; i < nstrains; ++i) {
total += (float)pow(strains[i], 1.2);
difficulty += strains[i] * weight;
weight *= DECAY_WEIGHT;
}
*pdiff = difficulty;
if (ptotal) {
*ptotal = total;
}
}
int d_calc_individual(ezpp_t ez, int type) {
int i;
/*
* the first object doesn't generate a strain,
* so we begin with an incremented interval end
*/
ez->max_strain = 0.0f;
ez->interval_end = (
(float)ceil(ez->objects.data[0].time / (STRAIN_STEP * ez->speed_mul))
* STRAIN_STEP * ez->speed_mul
);
ez->highest_strains.len = 0;
for (i = 0; i < ez->objects.len; ++i) {
int err;
object_t* o = &ez->objects.data[i];
object_t* prev = 0;
float prev_time = 0, prev_strain = 0;
if (i > 0) {
prev = &ez->objects.data[i - 1];
d_calc_strain(type, o, prev, ez->speed_mul);
prev_time = prev->time;
prev_strain = prev->strains[type];
}
err = d_update_max_strains(ez, decay_base[type], o->time, prev_time,
o->strains[type], prev_strain, i == 0);
if (err < 0) {
return err;
}
}
/*
* the peak strain will not be saved for
* the last section in the above loop
*/
if (!array_append(&ez->highest_strains, ez->max_strain)) {
return ERR_OOM;
}
switch (type) {
case DIFF_SPEED:
d_weigh_strains(ez, &ez->speed_stars, &ez->speed_difficulty);
break;
case DIFF_AIM:
d_weigh_strains(ez, &ez->aim_stars, &ez->aim_difficulty);
break;
}
return 0;
}
float d_length_bonus(float stars, float difficulty) {
return 0.32f + 0.5f * (log10f(difficulty + stars) - log10f(stars));
}
int d_std(ezpp_t ez) {
int res;
res = d_calc_individual(ez, DIFF_SPEED);
if (res < 0) {
return res;
}
res = d_calc_individual(ez, DIFF_AIM);
if (res < 0) {
return res;
}
ez->aim_length_bonus = d_length_bonus(ez->aim_stars, ez->aim_difficulty);
ez->speed_length_bonus = d_length_bonus(ez->speed_stars, ez->speed_difficulty);
ez->aim_stars = (float)sqrt(ez->aim_stars) * STAR_SCALING_FACTOR;
ez->speed_stars = (float)sqrt(ez->speed_stars) * STAR_SCALING_FACTOR;
if (ez->mods & MODS_TOUCH_DEVICE) {
ez->aim_stars = (float)pow(ez->aim_stars, 0.8f);
}
/* calculate total star rating */
ez->stars = ez->aim_stars + ez->speed_stars +
(float)fabs(ez->speed_stars - ez->aim_stars) * EXTREME_SCALING_FACTOR;
return 0;
}
/* taiko diff calc ----------------------------------------------------- */
#define TAIKO_STAR_SCALING_FACTOR 0.04125f
#define TAIKO_TYPE_CHANGE_BONUS 0.75f /* object type change bonus */
#define TAIKO_RHYTHM_CHANGE_BONUS 1.0f
#define TAIKO_RHYTHM_CHANGE_BASE_THRESHOLD 0.2f
#define TAIKO_RHYTHM_CHANGE_BASE 2.0f
typedef struct taiko_object {
int hit;
float strain;
float time;
float time_elapsed;
int rim;
int same_since; /* streak of hits of the same type (rim/center) */
/*
* was the last hit type change at an even same_since count?
* -1 if there is no previous switch (for example if the
* previous object was not a hit
*/
int last_switch_even;
} taiko_object_t;
/* object type change bonus */
float taiko_change_bonus(taiko_object_t* cur, taiko_object_t* prev) {
if (prev->rim != cur->rim) {
cur->last_switch_even = prev->same_since % 2 == 0;
if (prev->last_switch_even != cur->last_switch_even &&
prev->last_switch_even != -1) {
return TAIKO_TYPE_CHANGE_BONUS;
}
} else {
cur->last_switch_even = prev->last_switch_even;
cur->same_since = prev->same_since + 1;
}
return 0;
}
/* rhythm change bonus */
float taiko_rhythm_bonus(taiko_object_t* cur, taiko_object_t* prev) {
float ratio;
float diff;
if (cur->time_elapsed == 0 || prev->time_elapsed == 0) {
return 0;
}
ratio = al_max(prev->time_elapsed / cur->time_elapsed,
cur->time_elapsed / prev->time_elapsed);
if (ratio >= 8) {
return 0;
}
/* this is log base TAIKO_RHYTHM_CHANGE_BASE of ratio */
diff = (float)fmod(log(ratio) / log(TAIKO_RHYTHM_CHANGE_BASE), 1.0f);
/*
* threshold that determines whether the rhythm changed enough
* to be worthy of the bonus
*/
if (diff > TAIKO_RHYTHM_CHANGE_BASE_THRESHOLD &&
diff < 1 - TAIKO_RHYTHM_CHANGE_BASE_THRESHOLD)
{
return TAIKO_RHYTHM_CHANGE_BONUS;
}
return 0;
}
void taiko_strain(taiko_object_t* cur, taiko_object_t* prev) {
float decay;
float addition = 1.0f;
float factor = 1.0f;
decay = (float)pow(decay_base[0], cur->time_elapsed / 1000.0f);
/*
* we only have strains for hits, also ignore objects that are
* more than 1 second apart
*/
if (prev->hit && cur->hit && cur->time - prev->time < 1000.0f) {
addition += taiko_change_bonus(cur, prev);
addition += taiko_rhythm_bonus(cur, prev);
}
/* 300+bpm streams nerf? */
if (cur->time_elapsed < 50.0f) {
factor = 0.4f + 0.6f * cur->time_elapsed / 50.0f;
}
cur->strain = prev->strain * decay + addition * factor;
}
void swap_ptrs(void** a, void** b) {
void* tmp;
tmp = *a;
*a = *b;
*b = tmp;
}
int d_taiko(ezpp_t ez) {
int i, result;
/* this way we can swap cur and prev without copying */
taiko_object_t curprev[2];
taiko_object_t* cur = &curprev[0];
taiko_object_t* prev = &curprev[1];
ez->highest_strains.len = 0;
ez->max_strain = 0.0f;
ez->interval_end = STRAIN_STEP * ez->speed_mul;
/*
* TODO: separate taiko conversion into its own function
* so that it can be reused? probably slower, but cleaner,
* more modular and more readable
*/
for (i = 0; i < ez->nobjects; ++i) {
object_t* o = &ez->objects.data[i];
cur->hit = (o->type & OBJ_CIRCLE) != 0;
cur->time = o->time;
if (i > 0) {
cur->time_elapsed = (cur->time - prev->time) / ez->speed_mul;
} else {
cur->time_elapsed = 0;
}
if (!o->sound_types) {
return ERR_SYNTAX;
}
cur->strain = 1;
cur->same_since = 1;
cur->last_switch_even = -1;
cur->rim = (o->sound_types[0] & (SOUND_CLAP|SOUND_WHISTLE)) != 0;
if (ez->original_mode == MODE_TAIKO) {
goto continue_loop;
}
if (o->type & OBJ_SLIDER) {
/* TODO: too much indentation, pull this out */
int isound = 0;
float j;
/* drum roll, ignore */
if (!o->slider_is_drum_roll || i == 0) {
goto continue_loop;
}
/*
* sliders that meet the requirements will
* become streams of the slider's tick rate
*/
for (j = o->time;
j < o->time + o->duration + o->tick_spacing / 8;
j += o->tick_spacing)
{
int sound_type = o->sound_types[isound];
cur->rim = (sound_type & (SOUND_CLAP | SOUND_WHISTLE)) != 0;
cur->hit = 1;
cur->time = j;
cur->time_elapsed = (cur->time - prev->time) / ez->speed_mul;
cur->strain = 1;
cur->same_since = 1;
cur->last_switch_even = -1;
/* update strains for this hit */
if (i > 0 || j > o->time) {
taiko_strain(cur, prev);
}
result = d_update_max_strains(ez, decay_base[0], cur->time,
prev->time, cur->strain, prev->strain, i == 0 && j == o->time);
/* warning: j check might fail, floatcheck this */
if (result < 0) {
return result;
}
/* loop through the slider's sounds */
++isound;
isound %= o->nsound_types;
swap_ptrs((void**)&prev, (void**)&cur);
}
/*
* since we processed the slider as multiple hits,
* we must skip the prev/cur swap which we already did
* in the above loop
*/
continue;
}
continue_loop:
/* update strains for hits and other object types */
if (i > 0) {
taiko_strain(cur, prev);
}
result = d_update_max_strains(ez, decay_base[0], cur->time, prev->time,
cur->strain, prev->strain, i == 0);
if (result < 0) {
return result;
}
swap_ptrs((void**)&prev, (void**)&cur);
}
d_weigh_strains(ez, &ez->speed_stars, 0);
ez->speed_stars *= TAIKO_STAR_SCALING_FACTOR;
ez->stars = ez->speed_stars;
return 0;
}
int d_calc(ezpp_t ez) {
switch (ez->mode) {
case MODE_STD: return d_std(ez);
case MODE_TAIKO: return d_taiko(ez);
}
info("this gamemode is not yet supported\n");
return ERR_NOTIMPLEMENTED;
}
/* acc calc ------------------------------------------------------------ */
float acc_calc(int n300, int n100, int n50, int misses) {
int total_hits = n300 + n100 + n50 + misses;
float acc = 0;
if (total_hits > 0) {
acc = (n50 * 50.0f + n100 * 100.0f + n300 * 300.0f)
/ (total_hits * 300.0f);
}
return acc;
}
void acc_round(float acc_percent, int nobjects, int misses, int* n300,
int* n100, int* n50)
{
int max300;
float maxacc;
misses = al_min(nobjects, misses);
max300 = nobjects - misses;
maxacc = acc_calc(max300, 0, 0, misses) * 100.0f;
acc_percent = al_max(0.0f, al_min(maxacc, acc_percent));
*n50 = 0;
/* just some black magic maths from wolfram alpha */
*n100 = (int)al_round(
-3.0f * ((acc_percent * 0.01f - 1.0f) * nobjects + misses) * 0.5f
);
if (*n100 > nobjects - misses) {
/* acc lower than all 100s, use 50s */
*n100 = 0;
*n50 = (int)al_round(
-6.0f * ((acc_percent * 0.01f - 1.0f) * nobjects + misses) * 0.2f
);
*n50 = al_min(max300, *n50);
} else {
*n100 = al_min(max300, *n100);
}
*n300 = nobjects - *n100 - *n50 - misses;
}
float taiko_acc_calc(int n300, int n150, int nmiss) {
int total_hits = n300 + n150 + nmiss;
float acc = 0;
if (total_hits > 0) {
acc = (n150 * 150.0f + n300 * 300.0f) / (total_hits * 300.0f);
}
return acc;
}
void taiko_acc_round(float acc_percent, int nobjects, int nmisses,
int* n300, int* n150)
{
int max300;
float maxacc;
nmisses = al_min(nobjects, nmisses);
max300 = nobjects - nmisses;
maxacc = acc_calc(max300, 0, 0, nmisses) * 100.0f;
acc_percent = al_max(0.0f, al_min(maxacc, acc_percent));
/* just some black magic maths from wolfram alpha */
*n150 = (int)al_round(
-2.0f * ((acc_percent * 0.01f - 1.0f) * nobjects + nmisses)
);
*n150 = al_min(max300, *n150);
*n300 = nobjects - *n150 - nmisses;
}
/* std pp calc --------------------------------------------------------- */
/* some kind of formula to get a base pp value from stars */
float base_pp(float stars) {
return (float)pow(5.0f * al_max(1.0f, stars / 0.0675f) - 4.0f, 3.0f)
/ 100000.0f;
}
int pp_std(ezpp_t ez) {
int ncircles = ez->ncircles;
float nobjects_over_2k = ez->nobjects / 2000.0f;
float length_bonus = (
0.95f +
0.4f * al_min(1.0f, nobjects_over_2k) +
(ez->nobjects > 2000 ? (float)log10(nobjects_over_2k) * 0.5f : 0.0f)
);
float miss_penality = (float)pow(0.97f, ez->nmiss + (ez->n50 * 0.35f));
float combo_break = (
(float)pow(ez->combo, 0.8f) / (float)pow(ez->max_combo, 0.8f)
);
float ar_bonus;
float final_multiplier;
float acc_bonus, od_bonus;
float od_squared;
float hd_bonus;
/* acc used for pp is different in scorev1 because it ignores sliders */
float real_acc;
float accuracy;
ez->nspinners = ez->nobjects - ez->nsliders - ez->ncircles;
if (ez->max_combo <= 0) {
info("W: max_combo <= 0, changing to 1\n");
ez->max_combo = 1;
}
accuracy = acc_calc(ez->n300, ez->n100, ez->n50, ez->nmiss);
/*
* scorev1 ignores sliders and spinners since they are free 300s
* can go negative if we miss everything so we must clamp it
*/
switch (ez->score_version) {
case 1:
real_acc = acc_calc(
al_max(0, ez->n300 - ez->nsliders - ez->nspinners),
ez->n100, ez->n50, ez->nmiss);
break;
case 2:
real_acc = accuracy;
ncircles = ez->nobjects;
break;
default:
info("unsupported scorev%d\n", ez->score_version);
return ERR_NOTIMPLEMENTED;
}
/* ar bonus -------------------------------------------------------- */
ar_bonus = 1.0f;
/* high ar bonus */
if (ez->ar > 10.7f) {
ar_bonus += 0.45f * (ez->ar - 10.7f);
}
/* low ar bonus */
else if (ez->ar < 8.5f) {
ar_bonus += 0.025f * (8.5f - ez->ar);
}
/* aim pp ---------------------------------------------------------- */
ez->aim_pp = base_pp(ez->aim_stars);
ez->aim_pp *= length_bonus;
ez->aim_pp *= miss_penality;
ez->aim_pp *= combo_break;
ez->aim_pp *= ar_bonus;
/* hidden */
hd_bonus = 1.0f;
if (ez->mods & MODS_HD) {
hd_bonus += 0.04f * (12.0f - ez->ar);
}
ez->aim_pp *= hd_bonus;
/* flashlight */
if (ez->mods & MODS_FL) {
float fl_bonus = 1.0f + 0.35f * al_min(1.0f, ez->nobjects / 200.0f);
if (ez->nobjects > 200) {
fl_bonus += 0.3f * al_min(1, (ez->nobjects - 200) / 300.0f);
}
if (ez->nobjects > 500) {
fl_bonus += (ez->nobjects - 500) / 1200.0f;
}
ez->aim_pp *= fl_bonus;
}
/* acc bonus (bad aim can lead to bad acc) */
acc_bonus = 0.5f + accuracy / 2.0f;
/* od bonus (high od requires better aim timing to acc) */
od_squared = (float)pow(ez->od, 2);
od_bonus = 0.98f + od_squared / 2500.0f;
ez->aim_pp *= acc_bonus;
ez->aim_pp *= od_bonus;
/* speed pp -------------------------------------------------------- */
ez->speed_pp = base_pp(ez->speed_stars);
ez->speed_pp *= length_bonus;
ez->speed_pp *= miss_penality;
ez->speed_pp *= combo_break;
if (ez->ar > 10.33f) {
ez->speed_pp *= ar_bonus;
}
ez->speed_pp *= hd_bonus;
/* scale the speed value with accuracy slightly */
ez->speed_pp *= 0.02f + accuracy;
/* it's important to also consider accuracy difficulty when doing that */
ez->speed_pp *= 0.96f + (od_squared / 1600.0f);
/* acc pp ---------------------------------------------------------- */
/* arbitrary values tom crafted out of trial and error */
ez->acc_pp = (float)pow(1.52163f, 3.3f + ez->od / 2.0f) *
(float)pow(real_acc, 18.0f) * 2.83f;
/* length bonus (not the same as speed/aim length bonus) */
ez->acc_pp *= al_min(1.15f, (float)pow(ncircles / 1000.0f, 0.3f));
if (ez->mods & MODS_HD) ez->acc_pp *= 1.08f;
if (ez->mods & MODS_FL) ez->acc_pp *= 1.02f;
/* total pp -------------------------------------------------------- */
final_multiplier = 1.2f;
if (ez->mods & MODS_NF) final_multiplier *= 0.90f;
if (ez->mods & MODS_SO) final_multiplier *= 0.95f;
ez->pp = (float)(
pow(
pow(ez->speed_pp, 0.97f) +
pow(ez->acc_pp, 0.99f),
1.15f
) * final_multiplier);
ez->accuracy_percent = accuracy * 100.0f;
return 0;
}
/* taiko pp calc ------------------------------------------------------- */
int pp_taiko(ezpp_t ez) {
float length_bonus;
float final_multiplier;
float accuracy;
ez->n300 = al_max(0, ez->max_combo - ez->n100 - ez->nmiss);
accuracy = taiko_acc_calc(ez->n300, ez->n100, ez->nmiss);
/* base acc pp */
ez->acc_pp = (float)pow(150.0f / ez->odms, 1.1f);
ez->acc_pp *= (float)pow(accuracy, 15.0f) * 22.0f;
/* length bonus */
ez->acc_pp *= al_min(1.15f, (float)pow(ez->max_combo / 1500.0f, 0.3f));
/* base speed pp */
ez->speed_pp = (
(float)pow(5.0f * al_max(1.0f, ez->stars / 0.0075f) - 4.0f, 2.0f)
) / 100000.0f;
/* length bonus (not the same as acc length bonus) */
length_bonus = 1.0f + 0.1f * al_min(1.0f, ez->max_combo / 1500.0f);
ez->speed_pp *= length_bonus;
/* miss penality */
ez->speed_pp *= (float)pow(0.985f, ez->nmiss);
if (ez->max_combo > 0) {
ez->speed_pp *= (
al_min((float)pow(ez->combo - ez->nmiss, 0.5f)
/ (float)pow(ez->max_combo, 0.5f), 1.0f)
);
}
/* speed mod bonuses */
if (ez->mods & MODS_HD) {
ez->speed_pp *= 1.025f;
}
if (ez->mods & MODS_FL) {
ez->speed_pp *= 1.05f * length_bonus;
}
/* acc scaling */
ez->speed_pp *= accuracy;
/* overall multipliers */
final_multiplier = 1.1f;
if (ez->mods & MODS_NF) final_multiplier *= 0.90f;
if (ez->mods & MODS_HD) final_multiplier *= 1.10f;
ez->pp = (
(float)pow(
pow(ez->speed_pp, 1.1f) +
pow(ez->acc_pp, 1.1f),
1.0f / 1.1f
) * final_multiplier
);
ez->accuracy_percent = accuracy * 100.0f;
return 0;
}
/* main interface ------------------------------------------------------ */
int params_from_map(ezpp_t ez) {
int res;
ez->ar = ez->cs = ez->hp = ez->od = 5.0f;
ez->sv = ez->tick_rate = 1.0f;
ez->p_flags = 0;
if (ez->mode_override) {
ez->p_flags |= P_OVERRIDE_MODE;
}
if (ez->data) {
res = p_map_mem(ez, ez->data, ez->data_size);
} else if (!strcmp(ez->map, "-")) {
res = p_map(ez, stdin);
} else {
FILE* f = fopen(ez->map, "rb");
if (!f) {
perror("fopen");
res = ERR_IO;
} else {
res = p_map(ez, f);
fclose(f);
}
}
if (res < 0) {
goto cleanup;
}
if (!ez->aim_stars && !ez->speed_stars) {
res = d_calc(ez);
if (res < 0) {
goto cleanup;
}
}
cleanup:
return res;
}
int calc(ezpp_t ez) {
int res;
if (!ez->max_combo && (ez->map || ez->data)) {
if (ez->flags & AUTOCALC_BIT) {
ez->base_ar = ez->base_od = ez->base_cs = ez->base_hp = -1;
}
res = params_from_map(ez);
if (res < 0) {
return res;
}
} else {
if (ez->base_ar >= 0) ez->ar = ez->base_ar;
if (ez->base_od >= 0) ez->od = ez->base_od;
if (ez->base_cs >= 0) ez->cs = ez->base_cs;
if (ez->base_hp >= 0) ez->hp = ez->base_hp;
mods_apply(ez);
}
if (ez->mode == MODE_TAIKO) {
ez->stars = ez->speed_stars;
}
if (ez->accuracy_percent >= 0) {
switch (ez->mode) {
case MODE_STD:
acc_round(ez->accuracy_percent, ez->nobjects, ez->nmiss,
&ez->n300, &ez->n100, &ez->n50);
break;
case MODE_TAIKO:
taiko_acc_round(ez->accuracy_percent, ez->max_combo,
ez->nmiss, &ez->n300, &ez->n100);
break;
}
}
if (ez->combo < 0) {
ez->combo = ez->max_combo - ez->nmiss;
}
ez->n300 = ez->nobjects - ez->n100 - ez->n50 - ez->nmiss;
switch (ez->mode) {
case MODE_STD: res = pp_std(ez); break;
case MODE_TAIKO: res = pp_taiko(ez); break;
default:
info("pp calc for this mode is not yet supported\n");
return ERR_NOTIMPLEMENTED;
}
if (res < 0) {
return res;
}
return 0;
}
OPPAIAPI
ezpp_t ezpp_new(void) {
ezpp_t ez = calloc(sizeof(struct ezpp), 1);
if (ez) {
ez->mode = MODE_STD;
ez->mods = MODS_NOMOD;
ez->combo = -1;
ez->score_version = 1;
ez->accuracy_percent = -1;
ez->base_ar = ez->base_od = ez->base_cs = ez->base_hp = -1;
array_reserve(&ez->objects, 600);
array_reserve(&ez->timing_points, 16);
array_reserve(&ez->highest_strains, 600);
}
return ez;
}
void free_owned_map(ezpp_t ez) {
if (ez->flags & OWNS_MAP_BIT) {
free(ez->map);
free(ez->data);
ez->flags &= ~OWNS_MAP_BIT;
}
ez->map = 0;
ez->data = 0;
ez->data_size = 0;
if (ez->flags & AUTOCALC_BIT) {
ez->max_combo = 0; /* force re-parse */
}
}
OPPAIAPI
void ezpp_free(ezpp_t ez) {
free_owned_map(ez);
array_free(&ez->objects);
array_free(&ez->timing_points);
array_free(&ez->highest_strains);
m_free(ez);
free(ez);
}
OPPAIAPI
int ezpp(ezpp_t ez, char* mapfile) {
free_owned_map(ez);
ez->map = mapfile;
return calc(ez);
}
OPPAIAPI
int ezpp_data(ezpp_t ez, char* data, int data_size) {
free_owned_map(ez);
ez->data = data;
ez->data_size = data_size;
return calc(ez);
}
void* memclone(void* p, int size) {
void* res = malloc(size);
if (res) memcpy(res, p, size);
return res;
}
char* strclone(char* s) {
int len = (int)strlen(s) + 1;
return memclone(s, len);
}
OPPAIAPI
int ezpp_dup(ezpp_t ez, char* mapfile) {
free_owned_map(ez);
ez->flags |= OWNS_MAP_BIT;
ez->map = strclone(mapfile);
return calc(ez);
}
OPPAIAPI
int ezpp_data_dup(ezpp_t ez, char* data, int data_size) {
free_owned_map(ez);
ez->flags |= OWNS_MAP_BIT;
ez->data = memclone(data, data_size);
ez->data_size = data_size;
return calc(ez);
}
OPPAIAPI float ezpp_pp(ezpp_t ez) { return ez->pp; }
OPPAIAPI float ezpp_stars(ezpp_t ez) { return ez->stars; }
OPPAIAPI int ezpp_mode(ezpp_t ez) { return ez->mode; }
OPPAIAPI int ezpp_combo(ezpp_t ez) { return ez->combo; }
OPPAIAPI int ezpp_max_combo(ezpp_t ez) { return ez->max_combo; }
OPPAIAPI int ezpp_mods(ezpp_t ez) { return ez->mods; }
OPPAIAPI int ezpp_score_version(ezpp_t ez) { return ez->score_version; }
OPPAIAPI float ezpp_aim_stars(ezpp_t ez) { return ez->aim_stars; }
OPPAIAPI float ezpp_speed_stars(ezpp_t ez) { return ez->speed_stars; }
OPPAIAPI float ezpp_aim_pp(ezpp_t ez) { return ez->aim_pp; }
OPPAIAPI float ezpp_speed_pp(ezpp_t ez) { return ez->speed_pp; }
OPPAIAPI float ezpp_acc_pp(ezpp_t ez) { return ez->acc_pp; }
OPPAIAPI float ezpp_accuracy_percent(ezpp_t ez) { return ez->accuracy_percent; }
OPPAIAPI int ezpp_n300(ezpp_t ez) { return ez->n300; }
OPPAIAPI int ezpp_n100(ezpp_t ez) { return ez->n100; }
OPPAIAPI int ezpp_n50(ezpp_t ez) { return ez->n50; }
OPPAIAPI int ezpp_nmiss(ezpp_t ez) { return ez->nmiss; }
OPPAIAPI char* ezpp_title(ezpp_t ez) { return ez->title; }
OPPAIAPI char* ezpp_title_unicode(ezpp_t ez) { return ez->title_unicode; }
OPPAIAPI char* ezpp_artist(ezpp_t ez) { return ez->artist; }
OPPAIAPI char* ezpp_artist_unicode(ezpp_t ez) { return ez->artist_unicode; }
OPPAIAPI char* ezpp_creator(ezpp_t ez) { return ez->creator; }
OPPAIAPI char* ezpp_version(ezpp_t ez) { return ez->version; }
OPPAIAPI int ezpp_ncircles(ezpp_t ez) { return ez->ncircles; }
OPPAIAPI int ezpp_nsliders(ezpp_t ez) { return ez->nsliders; }
OPPAIAPI int ezpp_nspinners(ezpp_t ez) { return ez->nspinners; }
OPPAIAPI int ezpp_nobjects(ezpp_t ez) { return ez->nobjects; }
OPPAIAPI float ezpp_ar(ezpp_t ez) { return ez->ar; }
OPPAIAPI float ezpp_cs(ezpp_t ez) { return ez->cs; }
OPPAIAPI float ezpp_od(ezpp_t ez) { return ez->od; }
OPPAIAPI float ezpp_hp(ezpp_t ez) { return ez->hp; }
OPPAIAPI float ezpp_odms(ezpp_t ez) { return ez->odms; }
OPPAIAPI int ezpp_autocalc(ezpp_t ez) { return ez->flags & AUTOCALC_BIT; }
OPPAIAPI float ezpp_time_at(ezpp_t ez, int i) {
return ez->objects.len ? ez->objects.data[i].time : 0;
}
OPPAIAPI float ezpp_strain_at(ezpp_t ez, int i, int difficulty_type) {
return ez->objects.len ? ez->objects.data[i].strains[difficulty_type] : 0;
}
OPPAIAPI int ezpp_ntiming_points(ezpp_t ez) {
return ez->timing_points.len;
}
OPPAIAPI float ezpp_timing_time(ezpp_t ez, int i) {
return ez->timing_points.len ? ez->timing_points.data[i].time : 0;
}
OPPAIAPI float ezpp_timing_ms_per_beat(ezpp_t ez, int i) {
return ez->timing_points.len ? ez->timing_points.data[i].ms_per_beat : 0;
}
OPPAIAPI int ezpp_timing_change(ezpp_t ez, int i) {
return ez->timing_points.len ? ez->timing_points.data[i].change : 0;
}
#define setter(t, x) \
OPPAIAPI void ezpp_set_##x(ezpp_t ez, t x) { \
ez->x = x; \
if (ez->flags & AUTOCALC_BIT) { \
calc(ez); \
} \
}
setter(float, aim_stars)
setter(float, speed_stars)
setter(float, base_ar)
setter(float, base_od)
setter(float, base_hp)
setter(int, mode)
setter(int, combo)
setter(int, score_version)
setter(float, accuracy_percent)
#undef setter
OPPAIAPI
void ezpp_set_autocalc(ezpp_t ez, int autocalc) {
if (autocalc) {
ez->flags |= AUTOCALC_BIT;
} else {
ez->flags &= ~AUTOCALC_BIT;
}
}
OPPAIAPI
void ezpp_set_mods(ezpp_t ez, int mods) {
if ((mods ^ ez->mods) & (MODS_MAP_CHANGING | MODS_SPEED_CHANGING)) {
/* force map reparse */
ez->aim_stars = ez->speed_stars = ez->stars = 0;
ez->max_combo = 0;
}
ez->mods = mods;
if (ez->flags & AUTOCALC_BIT) {
calc(ez);
}
}
#define clobber_setter(t, x) \
OPPAIAPI \
void ezpp_set_##x(ezpp_t ez, t x) { \
ez->aim_stars = ez->speed_stars = ez->stars = 0; \
ez->max_combo = 0; \
ez->x = x; \
if (ez->flags & AUTOCALC_BIT) { \
calc(ez); \
} \
}
clobber_setter(float, base_cs)
clobber_setter(int, mode_override)
#undef clobber_setter
#define acc_clobber_setter(t, x) \
OPPAIAPI \
void ezpp_set_##x(ezpp_t ez, t x) { \
ez->accuracy_percent = -1; \
ez->aim_stars = ez->speed_stars = ez->stars = 0; \
ez->max_combo = 0; \
ez->x = x; \
if (ez->flags & AUTOCALC_BIT) { \
calc(ez); \
} \
}
acc_clobber_setter(int, nmiss)
acc_clobber_setter(int, end)
acc_clobber_setter(float, end_time)
OPPAIAPI
void ezpp_set_accuracy(ezpp_t ez, int n100, int n50) {
ez->accuracy_percent = -1;
ez->n100 = n100;
ez->n50 = n50;
if (ez->flags & AUTOCALC_BIT) {
calc(ez);
}
}
#endif /* OPPAI_IMPLEMENTATION */
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