remove the broken variable timestep

src/context.h

@@ -40,7 +40,6 @@ typedef struct context {
     int64_t delta_averager_residual; 
     int64_t time_averager[4];
     uint64_t tick_count;
-    uint64_t step_count;
 
     /* set just once on startup */
     uint64_t random_seed;

src/game/game.c

@@ -10,11 +10,6 @@
 #include <stdint.h>
 
 
-void game_step(int64_t delta) {
-    (void)delta;
-}
-
-
 void game_tick(void) {
     if (ctx.tick_count == 0) {
         ctx.udata = ccalloc(1, sizeof (struct state));

src/game/game.h

@@ -7,7 +7,6 @@
 #include <stdint.h>
 
 
-void game_step(int64_t delta);
 void game_tick(void);
 void game_end(void);
 

src/main.c

@@ -120,31 +120,19 @@ void main_loop(void) {
     }
 
     /* finally, let's get to work */
-    poll_events();
-    input_state_update(&ctx.input);
+    while (ctx.frame_accumulator >= ctx.desired_frametime * ctx.update_multiplicity) {
+        for (size_t i = 0; i < ctx.update_multiplicity; ++i) {
+            render_queue_clear();
 
-    /* do we _always_ have to be dry? */
-    if (ctx.frame_accumulator >= ctx.desired_frametime * ctx.update_multiplicity) {
-        while (ctx.frame_accumulator >= ctx.desired_frametime * ctx.update_multiplicity) {
-            for (size_t i = 0; i < ctx.update_multiplicity; ++i) {
-                render_queue_clear();
+            poll_events();
+            input_state_update(&ctx.input);
+            game_tick();
 
-                game_tick();
-
-                ctx.frame_accumulator -= ctx.desired_frametime;
-                ctx.tick_count = (ctx.tick_count % ULLONG_MAX) + 1;
-            }
+            ctx.frame_accumulator -= ctx.desired_frametime;
+            ctx.tick_count = (ctx.tick_count % ULLONG_MAX) + 1;
         }
-    } else {
-        render_queue_clear();
     }
 
-    /* the "step" will always run as long as there is time to spare. */
-    /* without interpolation, this is preferable to fixed ticks if the additional */
-    /* delta time calculations (like in physics code) are acceptable */
-    game_step(delta_time);
-    ctx.step_count = (ctx.step_count % ULLONG_MAX) + 1;
-
     render();
 }
 
@@ -239,7 +227,6 @@ static bool initialize(void) {
     ctx.desired_frametime = ctx.clocks_per_second / TICKS_PER_SECOND;
     ctx.frame_accumulator = 0;
     ctx.tick_count = 0;
-    ctx.step_count = 0;
 
     /* delta time averaging */
     ctx.delta_averager_residual = 0;