src/ui/wiggly_text.c

   1 #include <SDL.h>
   2
   3 #include "math/point.h"
   4
   5 #include "./wiggly_text.h"
   6 #include "system/lt.h"
   7 #include "system/stacktrace.h"
   8 #include "system/nth_alloc.h"
   9 #include "system/str.h"
  10 #include "game/camera.h"
  11
  12 int wiggly_text_render(const WigglyText *wiggly_text,
  13                       Camera *camera)
  14 {
  15     trace_assert(wiggly_text);
  16     trace_assert(camera);
  17
  18     const size_t n = strlen(wiggly_text->text);
  19     char buf[2] = {0, 0};
  20
  21     for (size_t i = 0; i < n; ++i) {
  22         buf[0] = wiggly_text->text[i];
  23
  24         if (camera_render_text_screen(
  25                 camera,
  26                 buf,
  27                 wiggly_text->scale,
  28                 wiggly_text->color,
  29                 vec_sum(
  30                     wiggly_text->position,
  31                     vec(
  32                         (float) (i * FONT_CHAR_WIDTH) * wiggly_text->scale.x,
  33                         sinf(wiggly_text->angle + (float) i / (float) n * 10.0f) * 20.0f))) < 0) {
  34             return -1;
  35         }
  36     }
  37
  38     return 0;
  39 }
  40
  41 int wiggly_text_update(WigglyText *wiggly_text, float delta_time)
  42 {
  43     trace_assert(wiggly_text);
  44     wiggly_text->angle = fmodf(wiggly_text->angle + 10.0f * delta_time, 2 * PI);
  45     return 0;
  46 }
  47
  48 Vec wiggly_text_size(const WigglyText *wiggly_text, const Camera *camera)
  49 {
  50     trace_assert(wiggly_text);
  51
  52     const Rect boundary = camera_text_boundary_box(
  53         camera,
  54         vec(0.0f, 0.0f),
  55         wiggly_text->scale,
  56         wiggly_text->text);
  57
  58     return vec(boundary.w, boundary.h);
  59 }
  60
  61 int fading_wiggly_text_render(const FadingWigglyText *fading_wiggle_text,
  62                               Camera *camera)
  63 {
  64     trace_assert(fading_wiggle_text);
  65     trace_assert(camera);
  66     return 0;
  67 }
  68
  69 int fading_wiggly_text_update(FadingWigglyText *fading_wiggle_text,
  70                               float delta_time)
  71 {
  72     trace_assert(fading_wiggle_text);
  73     (void) delta_time;
  74     return 0;
  75 }