mirror of https://github.com/OpenTTD/OpenTTD
116 lines
2.8 KiB
C++
116 lines
2.8 KiB
C++
/* see copyright notice in squirrel.h */
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#include "../../../stdafx.h"
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#include <squirrel.h>
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#include <math.h>
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#include <sqstdmath.h>
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#include "../../../safeguards.h"
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#define SINGLE_ARG_FUNC(_funcname, num_ops) static SQInteger math_##_funcname(HSQUIRRELVM v){ \
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SQFloat f; \
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sq_decreaseops(v,num_ops); \
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sq_getfloat(v,2,&f); \
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sq_pushfloat(v,(SQFloat)_funcname(f)); \
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return 1; \
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}
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#define TWO_ARGS_FUNC(_funcname, num_ops) static SQInteger math_##_funcname(HSQUIRRELVM v){ \
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SQFloat p1,p2; \
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sq_decreaseops(v,num_ops); \
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sq_getfloat(v,2,&p1); \
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sq_getfloat(v,3,&p2); \
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sq_pushfloat(v,(SQFloat)_funcname(p1,p2)); \
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return 1; \
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}
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#ifdef EXPORT_DEFAULT_SQUIRREL_FUNCTIONS
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static SQInteger math_srand(HSQUIRRELVM v)
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{
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SQInteger i;
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if(SQ_FAILED(sq_getinteger(v,2,&i)))
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return sq_throwerror(v,"invalid param");
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srand((unsigned int)i);
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return 0;
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}
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static SQInteger math_rand(HSQUIRRELVM v)
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{
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sq_pushinteger(v,rand());
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return 1;
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}
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#endif /* EXPORT_DEFAULT_SQUIRREL_FUNCTIONS */
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static SQInteger math_abs(HSQUIRRELVM v)
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{
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SQInteger n;
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sq_getinteger(v,2,&n);
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sq_pushinteger(v,(SQInteger)abs((int)n));
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return 1;
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}
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SINGLE_ARG_FUNC(sqrt, 100)
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SINGLE_ARG_FUNC(fabs, 1)
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SINGLE_ARG_FUNC(sin, 100)
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SINGLE_ARG_FUNC(cos, 100)
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SINGLE_ARG_FUNC(asin, 100)
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SINGLE_ARG_FUNC(acos, 100)
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SINGLE_ARG_FUNC(log, 100)
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SINGLE_ARG_FUNC(log10, 100)
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SINGLE_ARG_FUNC(tan, 100)
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SINGLE_ARG_FUNC(atan, 100)
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TWO_ARGS_FUNC(atan2, 100)
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TWO_ARGS_FUNC(pow, 100)
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SINGLE_ARG_FUNC(floor, 1)
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SINGLE_ARG_FUNC(ceil, 1)
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SINGLE_ARG_FUNC(exp, 100)
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#define _DECL_FUNC(name,nparams,tycheck) {#name,math_##name,nparams,tycheck}
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static const std::initializer_list<SQRegFunction> mathlib_funcs = {
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_DECL_FUNC(sqrt,2,".n"),
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_DECL_FUNC(sin,2,".n"),
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_DECL_FUNC(cos,2,".n"),
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_DECL_FUNC(asin,2,".n"),
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_DECL_FUNC(acos,2,".n"),
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_DECL_FUNC(log,2,".n"),
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_DECL_FUNC(log10,2,".n"),
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_DECL_FUNC(tan,2,".n"),
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_DECL_FUNC(atan,2,".n"),
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_DECL_FUNC(atan2,3,".nn"),
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_DECL_FUNC(pow,3,".nn"),
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_DECL_FUNC(floor,2,".n"),
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_DECL_FUNC(ceil,2,".n"),
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_DECL_FUNC(exp,2,".n"),
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#ifdef EXPORT_DEFAULT_SQUIRREL_FUNCTIONS
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_DECL_FUNC(srand,2,".n"),
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_DECL_FUNC(rand,1,std::nullopt),
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#endif /* EXPORT_DEFAULT_SQUIRREL_FUNCTIONS */
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_DECL_FUNC(fabs,2,".n"),
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_DECL_FUNC(abs,2,".n"),
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};
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#ifndef M_PI
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#define M_PI (3.14159265358979323846)
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#endif
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SQRESULT sqstd_register_mathlib(HSQUIRRELVM v)
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{
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for(auto &func : mathlib_funcs) {
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sq_pushstring(v,func.name);
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sq_newclosure(v,func.f,0);
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sq_setparamscheck(v,func.nparamscheck,func.typemask);
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sq_setnativeclosurename(v,-1,func.name);
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sq_createslot(v,-3);
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}
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#ifdef EXPORT_DEFAULT_SQUIRREL_FUNCTIONS
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sq_pushstring(v,"RAND_MAX");
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sq_pushinteger(v,RAND_MAX);
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sq_createslot(v,-3);
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#endif /* EXPORT_DEFAULT_SQUIRREL_FUNCTIONS */
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sq_pushstring(v,"PI");
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sq_pushfloat(v,(SQFloat)M_PI);
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sq_createslot(v,-3);
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return SQ_OK;
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}
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