src/game/level/level_editor/action_picker.c

   1 #include <string.h>
   2
   3 #include "system/stacktrace.h"
   4 #include "action_picker.h"
   5 #include "math/extrema.h"
   6 #include "math/vec.h"
   7
   8 static const char *action_labels[ACTION_N] = {
   9     [ACTION_NONE]        = "None",
  10     [ACTION_HIDE_LABEL]  = "Hide Label",
  11     [ACTION_TOGGLE_GOAL] = "Toggle Goal"
  12 };
  13
  14 #define TEXT_SCALE vec(5.0f, 5.0f)
  15 #define TEXT_COLOR COLOR_WHITE
  16 #define SELECTION_COLOR COLOR_WHITE
  17 #define BACKGROUND_COLOR COLOR_BLACK
  18
  19 void action_picker_render(const ActionPicker *picker,
  20                           const Camera *camera)
  21 {
  22     trace_assert(picker);
  23     trace_assert(camera);
  24     (void) action_labels;
  25
  26     camera_fill_rect_screen(
  27         camera,
  28         picker->widget.boundary,
  29         BACKGROUND_COLOR);
  30
  31     const float element_height = picker->widget.boundary.h / (float)ACTION_N;
  32     for (size_t i = 0; i < ACTION_N; ++i) {
  33         const Vec2f element_position =
  34             vec_sum(
  35                 vec(picker->widget.boundary.x, picker->widget.boundary.y),
  36                 vec(0.0f, (float)i * element_height));
  37         const Rect element_box =
  38             rect_from_vecs(element_position,
  39                            vec(picker->widget.boundary.w, element_height));
  40
  41
  42         camera_render_text_screen(
  43             camera,
  44             action_labels[i],
  45             TEXT_SCALE,
  46             TEXT_COLOR,
  47             element_position);
  48
  49         if (i == picker->action.type) {
  50             camera_draw_thicc_rect_screen(
  51                 camera,
  52                 element_box,
  53                 SELECTION_COLOR,
  54                 5.0f);
  55         }
  56     }
  57 }
  58
  59 void action_picker_event(ActionPicker *picker,
  60                          const SDL_Event *event)
  61 {
  62     trace_assert(picker);
  63     trace_assert(event);
  64
  65     switch (event->type) {
  66     case SDL_MOUSEBUTTONDOWN: {
  67         switch (event->button.button) {
  68         case SDL_BUTTON_LEFT: {
  69             const Vec2f mouse_position =
  70                 vec((float)event->button.x,
  71                     (float)event->button.y);
  72
  73             const float element_height = picker->widget.boundary.h / (float)ACTION_N;
  74
  75             for (ActionType i = 0; i < ACTION_N; ++i) {
  76                 const Vec2f element_position =
  77                     vec_sum(
  78                         vec(picker->widget.boundary.x, picker->widget.boundary.y),
  79                         vec(0.0f, (float)i * element_height));
  80                 const Rect element_box =
  81                     rect_from_vecs(element_position,
  82                                    vec(picker->widget.boundary.w, element_height));
  83
  84                 if (rect_contains_point(element_box, mouse_position)) {
  85                     picker->action.type = i;
  86                     break;
  87                 }
  88             }
  89         } break;
  90         }
  91     } break;
  92
  93     case SDL_KEYDOWN: {
  94         switch (event->key.keysym.sym) {
  95         case SDLK_UP: {
  96             if (picker->action.type > 0) {
  97                 picker->action.type--;
  98             }
  99         } break;
 100
 101         case SDLK_DOWN: {
 102             if (picker->action.type < ACTION_N) {
 103                 picker->action.type++;
 104             }
 105         } break;
 106         }
 107     } break;
 108     }
 109 }