shithub: m8c

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add a timer to cube update, force clear renderer on cube destroy

--- a/src/fx_cube.c

+++ b/src/fx_cube.c

@@ -1,5 +1,6 @@

 #include "SDL2_inprint.h"

 #include <SDL3/SDL.h>

+#include <SDL3/SDL_timer.h>

 #include <time.h>

 #include <math.h>

@@ -60,8 +61,10 @@

   SDL_Texture *og_target = SDL_GetRenderTarget(fx_renderer);

-  texture_size.x = (int)SDL_GetNumberProperty(SDL_GetTextureProperties(og_target),SDL_PROP_TEXTURE_WIDTH_NUMBER, 0);

-  texture_size.y = (int)SDL_GetNumberProperty(SDL_GetTextureProperties(og_target),SDL_PROP_TEXTURE_HEIGHT_NUMBER, 0);

+  texture_size.x = (int)SDL_GetNumberProperty(SDL_GetTextureProperties(og_target),

+                                              SDL_PROP_TEXTURE_WIDTH_NUMBER, 0);

+  texture_size.y = (int)SDL_GetNumberProperty(SDL_GetTextureProperties(og_target),

+                                              SDL_PROP_TEXTURE_HEIGHT_NUMBER, 0);

   texture_cube = SDL_CreateTexture(fx_renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_TARGET,

                                    texture_size.x, texture_size.y);

@@ -92,36 +95,50 @@

 }

 void fx_cube_destroy() {

+  // Free resources

   SDL_DestroyTexture(texture_cube);

   SDL_DestroyTexture(texture_text);

-}

-void fx_cube_update() {

-  SDL_FPoint points[24];

-  int points_counter = 0;

-  SDL_Texture *og_texture = SDL_GetRenderTarget(fx_renderer);

-

-  SDL_SetRenderTarget(fx_renderer, texture_cube);

+  // Force clear renderer

+  SDL_SetRenderTarget(fx_renderer, NULL);

   SDL_SetRenderDrawColor(fx_renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);

   SDL_RenderClear(fx_renderer);

+}

-  const unsigned int seconds = SDL_GetTicks() / 1000;

-  const float scale_factor = 1 + SDL_sinf((float)seconds) * (float)0.005;

+// Update the cube texture every 16ms>. Returns 1 if cube was updated, 0 if no changes were made.

+int fx_cube_update() {

+  static Uint64 ticks_last_update = 0;

-  scale(scale_factor, scale_factor, scale_factor);

-  rotate_cube(M_PI / 180, M_PI / 270);

+  if (SDL_GetTicks() - ticks_last_update >= 16) {

+    ticks_last_update = SDL_GetTicks();

+    SDL_FPoint points[24];

+    int points_counter = 0;

+    SDL_Texture *og_texture = SDL_GetRenderTarget(fx_renderer);

-  for (int i = 0; i < 12; i++) {

-    const float *p1 = nodes[edges[i][0]];

-    const float *p2 = nodes[edges[i][1]];

-    points[points_counter++] = (SDL_FPoint){p1[0] + center_x, nodes[edges[i][0]][1] + center_y};

-    points[points_counter++] = (SDL_FPoint){p2[0] + center_x, p2[1] + center_y};

-  }

+    SDL_SetRenderTarget(fx_renderer, texture_cube);

+    SDL_SetRenderDrawColor(fx_renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);

+    SDL_RenderClear(fx_renderer);

-  SDL_RenderTexture(fx_renderer, texture_text, NULL, NULL);

-  SDL_SetRenderDrawColor(fx_renderer, line_color.r, line_color.g, line_color.b, line_color.a);

-  SDL_RenderLines(fx_renderer, points, 24);

+    const unsigned int seconds = SDL_GetTicks() / 1000;

+    const float scale_factor = 1 + SDL_sinf((float)seconds) * (float)0.005;

-  SDL_SetRenderTarget(fx_renderer, og_texture);

-  SDL_RenderTexture(fx_renderer, texture_cube, NULL, NULL);

+    scale(scale_factor, scale_factor, scale_factor);

+    rotate_cube(M_PI / 180, M_PI / 270);

+

+    for (int i = 0; i < 12; i++) {

+      const float *p1 = nodes[edges[i][0]];

+      const float *p2 = nodes[edges[i][1]];

+      points[points_counter++] = (SDL_FPoint){p1[0] + center_x, nodes[edges[i][0]][1] + center_y};

+      points[points_counter++] = (SDL_FPoint){p2[0] + center_x, p2[1] + center_y};

+    }

+

+    SDL_RenderTexture(fx_renderer, texture_text, NULL, NULL);

+    SDL_SetRenderDrawColor(fx_renderer, line_color.r, line_color.g, line_color.b, line_color.a);

+    SDL_RenderLines(fx_renderer, points, 24);

+

+    SDL_SetRenderTarget(fx_renderer, og_texture);

+    SDL_RenderTexture(fx_renderer, texture_cube, NULL, NULL);

+    return 1;

+  }

+  return 0;

 }

--- a/src/fx_cube.h

+++ b/src/fx_cube.h

@@ -6,5 +6,5 @@

                   unsigned int texture_width, unsigned int texture_height,

                   unsigned int font_glyph_width);

 void fx_cube_destroy();

-void fx_cube_update();

+int fx_cube_update();

 #endif

\ No newline at end of file

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