src/game/level_script.c

   1 #include <assert.h>
   2
   3 #include "ebisp/gc.h"
   4 #include "ebisp/interpreter.h"
   5 #include "ebisp/scope.h"
   6 #include "game/level/player/rigid_rect.h"
   7 #include "level.h"
   8 #include "level_script.h"
   9 #include "system/log.h"
  10
  11 struct EvalResult
  12 hide_goal(void *param, Gc *gc, struct Scope *scope, struct Expr args)
  13 {
  14     assert(param);
  15     assert(gc);
  16     assert(scope);
  17
  18     /* TODO(#507): Manually parsing args of native functions is tedious. */
  19     if (!list_p(args)) {
  20         return wrong_argument_type(gc, "listp", args);
  21     }
  22
  23     if (length_of_list(args) != 1) {
  24         return eval_failure(
  25             CONS(gc,
  26                  SYMBOL(gc, "wrong-number-of-arguments"),
  27                  NUMBER(gc, length_of_list(args))));
  28     }
  29
  30     if (!string_p(CAR(args))) {
  31         return wrong_argument_type(gc, "stringp", args);
  32     }
  33
  34     const char * const goal_id = CAR(args).atom->str;
  35     Level * const level = (Level*)param;
  36
  37     level_hide_goal(level, goal_id);
  38
  39     return eval_success(NIL(gc));
  40 }
  41
  42 struct EvalResult
  43 show_goal(void *param, Gc *gc, struct Scope *scope, struct Expr args)
  44 {
  45     assert(param);
  46     assert(gc);
  47     assert(scope);
  48
  49     if (!list_p(args)) {
  50         return wrong_argument_type(gc, "listp", args);
  51     }
  52
  53     if (length_of_list(args) != 1) {
  54         return wrong_number_of_arguments(gc, length_of_list(args));
  55     }
  56
  57     if (!string_p(CAR(args))) {
  58         return wrong_argument_type(gc, "stringp", args);
  59     }
  60
  61     const char * const goal_id = CAR(args).atom->str;
  62     Level * const level = (Level*)param;
  63
  64     level_show_goal(level, goal_id);
  65
  66     return eval_success(NIL(gc));
  67 }
  68
  69 struct EvalResult rect_apply_force(void *param, Gc *gc, struct Scope *scope, struct Expr args)
  70 {
  71     assert(gc);
  72     assert(scope);
  73     assert(param);
  74
  75     /* TODO(#401): rect_apply_force doesn't sanitize it's input */
  76
  77     Level *level = (Level*) param;
  78     const char *rect_id = CAR(args).atom->str;
  79     struct Expr vector_force_expr = CAR(CDR(args));
  80     const float force_x = (float) CAR(vector_force_expr).atom->num;
  81     const float force_y = (float) CDR(vector_force_expr).atom->num;
  82
  83     print_expr_as_sexpr(stdout, args); printf("\n");
  84
  85     Rigid_rect *rigid_rect = level_rigid_rect(level, rect_id);
  86     if (rigid_rect != NULL) {
  87         log_info("Found rect `%s`\n", rect_id);
  88         log_info("Applying force (%f, %f)\n", force_x, force_y);
  89         rigid_rect_apply_force(rigid_rect, vec(force_x, force_y));
  90     } else {
  91         log_fail("Couldn't find rigid_rect `%s`\n", rect_id);
  92     }
  93
  94     return eval_success(NIL(gc));
  95 }
  96
  97 void load_level_library(Gc *gc, struct Scope *scope, Level *level)
  98 {
  99     set_scope_value(
 100         gc,
 101         scope,
 102         SYMBOL(gc, "rect-apply-force"),
 103         NATIVE(gc, rect_apply_force, level));
 104     set_scope_value(
 105         gc,
 106         scope,
 107         SYMBOL(gc, "hide-goal"),
 108         NATIVE(gc, hide_goal, level));
 109     set_scope_value(
 110         gc,
 111         scope,
 112         SYMBOL(gc, "show-goal"),
 113         NATIVE(gc, show_goal, level));
 114 }