54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
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#include "script.h"
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#include "gameobject.h"
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#include <s7.h>
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s7_scheme *s7 = NULL;
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s7_pointer s7square(s7_scheme * sc, s7_pointer args)
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{
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if (s7_is_integer(s7_car(args)))
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return (s7_make_integer
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(sc, s7_integer(s7_car(args)) * s7_integer(s7_car(args))));
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return (s7_wrong_type_arg_error
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(sc, "square", 1, s7_car(args), "an integer"));
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}
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s7_pointer s7move(s7_scheme * sc, s7_pointer args)
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{
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if (s7_is_number(s7_car(args)) && s7_is_number(s7_cadr(args))) {
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gameobject_move(updateGO, s7_real(s7_car(args)),
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s7_real(s7_cadr(args)));
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return args;
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}
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return args;
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}
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s7_pointer s7rotate(s7_scheme * sc, s7_pointer args)
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{
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if (s7_is_number(s7_car(args))) {
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gameobject_rotate(updateGO, s7_real(s7_car(args)));
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return (s7_make_real(sc, cpBodyGetAngle(updateGO->body)));
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}
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return (s7_wrong_type_arg_error
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(sc, "rotate", 1, s7_car(args), "a number"));
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}
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void script_init()
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{
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s7 = s7_init();
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s7_define_function(s7, "square", s7square, 1, 0, 0,
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"(square int) squares int");
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s7_define_function(s7, "move", s7move, 1, 0, 0,
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"(move (xs ys)) moves at xs and ys pixels per second");
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s7_define_function(s7, "rotate", s7rotate, 1, 0, 0,
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"(rotate ms) rotates at ms meters per second");
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}
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void script_run(const char *script)
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{
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s7_eval_c_string(s7, script);
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}
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