1 files changed, 103 insertions, 0 deletions
diff --git a/sources/types.h b/sources/types.h
new file mode 100644
index 0000000..7f8acc4
--- /dev/null
+++ b/sources/types.h
@@ -0,0 +1,103 @@
+#include "raylib.h"
+#include "s7.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+// ======================================
+// Color
+
+static int color_type_tag = 0;
+
+static s7_pointer free_color(s7_scheme *sc, s7_pointer obj)
+{
+  free(s7_c_object_value(obj));
+  return(NULL);
+}
+
+static s7_pointer make_color(s7_scheme *sc, s7_pointer args)
+{
+  Color *c = (Color *)malloc(sizeof(Color));
+
+  c->r = s7_integer(s7_car(args));
+  c->g = s7_integer(s7_cadr(args));
+  c->b = s7_integer(s7_caddr(args));
+  c->a = 255;
+  
+  return(s7_make_c_object(sc, color_type_tag, (void *)c));
+}
+
+static s7_pointer color_to_string(s7_scheme *sc, s7_pointer args)
+{
+  s7_pointer result;
+  Color *c = (Color *)s7_c_object_value(s7_car(args));
+  char *str = (char *)calloc(32, sizeof(char));
+  snprintf(str, 32, "<color %d %d %d>", c->r, c->g, c->b);
+  result = s7_make_string(sc, str);
+  free(str);
+  return(result);
+}
+
+static s7_pointer is_color(s7_scheme *sc, s7_pointer args)
+{
+  return(s7_make_boolean(sc, 
+			 s7_is_c_object(s7_car(args)) &&
+			 s7_c_object_type(s7_car(args)) == color_type_tag));
+}
+
+static s7_pointer color_r(s7_scheme *sc, s7_pointer args)
+{
+  Color *c = (Color *)s7_c_object_value(s7_car(args));
+  return(s7_make_integer(sc, c->r));
+}
+
+static s7_pointer set_color_r(s7_scheme *sc, s7_pointer args)
+{
+  Color *c = (Color *)s7_c_object_value(s7_car(args));
+  c->r = s7_integer(s7_cadr(args));
+  return(s7_cadr(args));
+}
+
+static s7_pointer color_g(s7_scheme *sc, s7_pointer args)
+{
+  Color *c = (Color *)s7_c_object_value(s7_car(args));
+  return(s7_make_integer(sc, c->g));
+}
+
+static s7_pointer set_color_g(s7_scheme *sc, s7_pointer args)
+{
+  Color *c = (Color *)s7_c_object_value(s7_car(args));
+  c->g = s7_integer(s7_cadr(args));
+  return(s7_cadr(args));
+}
+
+static s7_pointer color_b(s7_scheme *sc, s7_pointer args)
+{
+  Color *c = (Color *)s7_c_object_value(s7_car(args));
+  return(s7_make_integer(sc, c->b));
+}
+
+static s7_pointer set_color_b(s7_scheme *sc, s7_pointer args)
+{
+  Color *c = (Color *)s7_c_object_value(s7_car(args));
+  c->b = s7_integer(s7_cadr(args));
+  return(s7_cadr(args));
+}
+
+
+
+// ======================================
+
+static void rl_register_types(s7_scheme *s7) {
+  color_type_tag = s7_make_c_type(s7, "color");
+  s7_c_type_set_gc_free(s7, color_type_tag, free_color);
+  s7_c_type_set_to_string(s7, color_type_tag, color_to_string);
+  
+  s7_define_function(s7, "make-color", make_color, 3, 0, false, "(make-color r g b) makes a new color");
+  
+  s7_define_function(s7, "color?", is_color, 1, 0, false, "(color? anything) returns #t if its argument is a color object");
+
+  s7_define_variable(s7, "color-r", s7_dilambda(s7, "color-r", color_r, 1, 0, set_color_r, 2, 0, "color r field"));
+  s7_define_variable(s7, "color-g", s7_dilambda(s7, "color-g", color_g, 1, 0, set_color_g, 2, 0, "color g field"));
+  s7_define_variable(s7, "color-b", s7_dilambda(s7, "color-b", color_b, 1, 0, set_color_b, 2, 0, "color b field"));
+}
+