use floats for ctx.frame_number and ctx.random_seed

include/twn_context.h

@@ -16,10 +16,10 @@ typedef struct Context {
     void *udata;
 
     /* which frame is it, starting from 0 at startup */
-    uint64_t frame_number;
+    float frame_number;
 
     /* real time spent on one frame (in seconds) */
-    /* townengine is fixed step based, so you don't have */
+    /* townengine is fixed step based, so you don't have to use delta */
     /* TODO: actually set it */
     float frame_duration;
 
@@ -30,7 +30,7 @@ typedef struct Context {
     Vec2 mouse_movement;
 
     /* is set on startup, should be used as source of randomness */
-    uint64_t random_seed;
+    float random_seed;
 
     /* whether debugging logic should be enabled in user code */
     bool debug;

src/game_object/twn_linux_game_object.c

@@ -19,7 +19,7 @@ static void (*game_end_callback)(void);
 static x_watcher *watcher;
 static void *handle = NULL;
 
-static uint64_t last_tick_modified;
+static float last_tick_modified;
 static bool loaded_after_modification = true;
 static SDL_mutex *lock;
 
@@ -59,7 +59,7 @@ static void load_game_object(void) {
 
     handle = new_handle;
 
-    if (ctx.game.frame_number != 0)
+    if (fabsf(0.0f - ctx.game.frame_number) > 0.00001f)
         log_info("Game object was reloaded\n");
 
     return;

src/rendering/twn_gl_15_rendering.c

@@ -20,7 +20,7 @@ void start_render_frame(void) {
 
 
 void end_render_frame(void) {
-    if (!ctx.render_double_buffered || ctx.game.frame_number == 1) {
+    if (!ctx.render_double_buffered || (fabsf(1.0f - ctx.game.frame_number) < 0.00001f)) {
         issue_deferred_draw_commands();
         SDL_GL_SwapWindow(ctx.window);
         arrsetlen(deferred_commands, 0);

src/twn_loop.c

@@ -236,7 +236,7 @@ static void main_loop(void) {
             preserve_persistent_ctx_fields();
 
             ctx.frame_accumulator -= ctx.desired_frametime;
-            ctx.game.frame_number = (ctx.game.frame_number % ULLONG_MAX) + 1;
+            ctx.game.frame_number++;
             ctx.game.initialization_needed = false;
         }
     }
@@ -584,9 +584,9 @@ static bool initialize(void) {
     /* random seeding */
     /* SDL_GetPerformanceCounter returns some platform-dependent number. */
     /* it should vary between game instances. i checked! random enough for me. */
-    ctx.game.random_seed = SDL_GetPerformanceCounter();
+    ctx.game.random_seed = (float)(SDL_GetPerformanceCounter() % 16777216);
     srand((unsigned int)ctx.game.random_seed);
-    stbds_rand_seed(ctx.game.random_seed);
+    stbds_rand_seed((size_t)ctx.game.random_seed);
 
     /* main loop machinery */
     toml_datum_t datum_ticks_per_second = toml_int_in(engine, "ticks_per_second");