#ifndef UTIL_PRE_H
#define UTIL_PRE_H

#ifndef NOCOMPAT
    #define COMPAT_NO_MOD_IS_XONOTIC
#endif

#ifndef QCC_SUPPORT_ACCUMULATE
    #ifdef GMQCC
        #define QCC_SUPPORT_ACCUMULATE
    #endif
#endif

#ifndef QCC_SUPPORT_NIL
    #ifdef GMQCC
        #define QCC_SUPPORT_NIL 1
    #endif
#endif

#ifndef QCC_SUPPORT_INT
    #define int float

    #define stoi(s) stof(s)
    #define stob(s) stof(s)
    #define itos(i) ftos(i)
#else
    #define stoi(s) ((int) stof(s))
    #define stob(s) ((bool) stof(s))
    #define itos(i) ftos(i)
#endif

#define FOREACH_ARRAY(arr, start, end, cond, body) do { \
    for (int i = start; i < end; ++i) {                 \
        const noref entity it = arr[i];                 \
        if (cond) { body }                              \
    }                                                   \
} while(0)

#define FOREACH_LIST(list, next, cond, body) do {               \
    noref int i = 0;                                            \
    for (entity it = list##_first; it; (it = it.next, ++i)) {   \
        if (cond) { body }                                      \
    }                                                           \
} while(0)

#define FOREACH(list, cond, body) FOREACH_LIST(list, enemy, cond, body)

#ifdef GMQCC
    #define EVAL(...)           __VA_ARGS__

    #define OVERLOAD_(F, ...)   F##_##__VA_COUNT__(__VA_ARGS__)
    #define OVERLOAD(F, ...)    F##_##__VA_COUNT__(__VA_ARGS__)
#else
    #define EMPTY()
    #define DEFER(id) id EMPTY()

    #define EVAL(...)  EVAL1(EVAL1(EVAL1(__VA_ARGS__)))
    #define EVAL1(...) EVAL2(EVAL2(EVAL2(__VA_ARGS__)))
    #define EVAL2(...) EVAL3(EVAL3(EVAL3(__VA_ARGS__)))
    #define EVAL3(...) EVAL4(EVAL4(EVAL4(__VA_ARGS__)))
    #define EVAL4(...) EVAL5(EVAL5(EVAL5(__VA_ARGS__)))
    #define EVAL5(...) __VA_ARGS__

    #define OVERLOAD___(F,_16,_15,_14,_13,_12,_11,_10,_9,_8,_7,_6,_5,_4,_3,_2,_1,n,...) F##_##n
    #define OVERLOAD__(F, ...)  OVERLOAD___(F,##__VA_ARGS__,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)
    #define OVERLOAD_(...)      DEFER(OVERLOAD__(__VA_ARGS__))
    #define OVERLOAD(F, ...)    OVERLOAD_(F,##__VA_ARGS__)(__VA_ARGS__)
#endif

#define LAMBDA(...) { __VA_ARGS__ ; }

#define MAP(f, ...) EVAL(OVERLOAD(MAP, f, __VA_ARGS__))
#define MAP_2(f, it) f(it)
#define MAP_3(f, it, ...) f(it)MAP_2(f, __VA_ARGS__)
#define MAP_4(f, it, ...) f(it)MAP_3(f, __VA_ARGS__)
#define MAP_5(f, it, ...) f(it)MAP_4(f, __VA_ARGS__)
#define MAP_6(f, it, ...) f(it)MAP_5(f, __VA_ARGS__)
#define MAP_7(f, it, ...) f(it)MAP_6(f, __VA_ARGS__)
#define MAP_8(f, it, ...) f(it)MAP_7(f, __VA_ARGS__)
#define MAP_9(f, it, ...) f(it)MAP_8(f, __VA_ARGS__)
#define MAP_10(f, it, ...) f(it)MAP_9(f, __VA_ARGS__)
#define MAP_11(f, it, ...) f(it)MAP_10(f, __VA_ARGS__)
#define MAP_12(f, it, ...) f(it)MAP_11(f, __VA_ARGS__)
#define MAP_13(f, it, ...) f(it)MAP_12(f, __VA_ARGS__)
#define MAP_14(f, it, ...) f(it)MAP_13(f, __VA_ARGS__)
#define MAP_15(f, it, ...) f(it)MAP_14(f, __VA_ARGS__)
#define MAP_16(f, it, ...) f(it)MAP_15(f, __VA_ARGS__)
#define MAP_17(f, it, ...) f(it)MAP_16(f, __VA_ARGS__)
#define MAP_18(f, it, ...) f(it)MAP_17(f, __VA_ARGS__)
#define MAP_19(f, it, ...) f(it)MAP_18(f, __VA_ARGS__)
#define MAP_20(f, it, ...) f(it)MAP_19(f, __VA_ARGS__)

#define IDENTITY(it) it

#define UNWORDS(...) MAP(IDENTITY, __VA_ARGS__)

#define APPLY(f, ...) f(__VA_ARGS__)

#ifdef SVQC
    #define SV(f, ...) f(__VA_ARGS__)
#else
    #define SV(f, ...)
#endif

#ifdef CSQC
    #define CL(f, ...) f(__VA_ARGS__)
#else
    #define CL(f, ...)
#endif

#define IF(cond, f, ...) cond(f, __VA_ARGS__)

#define GET(name) name##get
#define GETTER(type, name) type GET(name)() { return name; }

#define BIT(n) (1 << (n))
#ifndef BRANCHLESS_BITSET
    #define BITSET(var, mask, flag) (flag ? (var) | (mask) : (var) &~ (mask))
#else
    #define BITSET(var, mask, flag) ((var) ^ (-(flag) ^ (var)) & (mask))
#endif

#endif