comparison: test/snake.c
test/snake.c
- changeset 46
- d3285aed65b3
- parent 45
- 18de2af03531
- child 47
- 44457f6cb0a2
equal
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replaced
| 45:18de2af03531 | 46:d3285aed65b3 |
|---|---|
| 27 | 27 |
| 28 #include <ascension/ascension.h> | 28 #include <ascension/ascension.h> |
| 29 #include <cx/printf.h> | 29 #include <cx/printf.h> |
| 30 | 30 |
| 31 static void update_fps_counter(AscSceneNode *node) { | 31 static void update_fps_counter(AscSceneNode *node) { |
| 32 // addition and multiplication is more efficient testing for zero | 32 static uint64_t last_fps = 0; |
| 33 // at an unnoticeable cost of imprecision | 33 static uint64_t debounce = ASC_NANOS_SECOND - 1; |
| 34 static unsigned last_fps = 0u; | 34 debounce += asc_context.frame_nanos; |
| 35 static unsigned debounce = 999u; | 35 // only update text every seconds |
| 36 unsigned fps = 1000u; | 36 if (debounce >= ASC_NANOS_SECOND) { |
| 37 debounce += asc_context.elapsed_millis; | |
| 38 if (debounce >= 1000u) { | |
| 39 debounce = 0; | 37 debounce = 0; |
| 40 fps /= asc_context.elapsed_millis; | 38 uint64_t fps = ASC_NANOS_SECOND; |
| 39 fps /= asc_context.frame_nanos; | |
| 41 if (fps != last_fps) { | 40 if (fps != last_fps) { |
| 42 last_fps = fps; | 41 last_fps = fps; |
| 43 snprintf(asc_text_data(node)->text, 9, "%u FPS", fps); | 42 snprintf(asc_text_data(node)->text, 11, "%"PRIu64" FPS", fps); |
| 44 asc_node_update(node); | 43 asc_node_update(node); |
| 45 } | 44 } |
| 46 } | 45 } |
| 47 } | 46 } |
| 48 | 47 |
| 49 static void create_fps_counter(void) { | 48 static void create_fps_counter(void) { |
| 50 asc_set_font(asc_font(ASC_FONT_REGULAR, 24)); | 49 asc_set_font(asc_font(ASC_FONT_REGULAR, 24)); |
| 51 asc_ink_rgb(255, 0, 0); | 50 asc_ink_rgb(255, 0, 0); |
| 52 AscSceneNode* node = asc_text(10, 10, "XXXXX FPS"); | 51 AscSceneNode* node = asc_text(10, 10, "XXXXXXX FPS"); |
| 53 asc_scene_add_behavior(node, update_fps_counter); | 52 asc_scene_add_behavior(node, update_fps_counter); |
| 54 asc_scene_add(&asc_window_active->ui, node); | 53 asc_scene_add(&asc_window_active->ui, node); |
| 55 } | 54 } |
| 56 | 55 |
| 57 static void update_score_counter(AscSceneNode *node) { | 56 static void update_score_counter(AscSceneNode *node) { |
