Fix UI: maneuver status updates, ZII initialization, helper functions for cache checks

AGENTS.md

@@ -20,6 +20,7 @@
 - No trailing whitespace in any files (including markdown)
   - Pre-commit hook automatically strips it
   - For markdown line breaks, use <br> tag instead of two trailing spaces
+- ZII (Zero Is Initialization) pattern: Initialize structs using `= {0}` or `= {NULL}` instead of individual field assignments. This guarantees all fields (including padding) are zeroed out. Example: `MyStruct s = {0};`
 
 ## File Reading Policy
 - Ask before reading files unless immediately necessary for current task

src/ui_renderer.cpp

@@ -21,6 +21,25 @@
 #define MANEUVER_LIST_HEIGHT 450
 #define MANEUVER_LIST_Y_OFFSET 320
 
+static inline bool needs_body_list_rebuild(UIState* ui_state, SimulationState* sim) {
+    return (ui_state->cached_body_count != sim->body_count ||
+            ui_state->cached_craft_count != sim->craft_count ||
+            ui_state->body_list_buffer == NULL);
+}
+
+static inline bool needs_maneuver_list_rebuild(UIState* ui_state, SimulationState* sim, int current_executed_count) {
+    return (ui_state->cached_maneuver_count != sim->maneuver_count ||
+            ui_state->cached_executed_count != current_executed_count ||
+            ui_state->maneuver_list_buffer == NULL);
+}
+
+static inline bool needs_hohmann_rebuild(UIState* ui_state, SimulationState* sim) {
+    return (ui_state->cached_body_count != sim->body_count ||
+            ui_state->cached_craft_count != sim->craft_count ||
+            ui_state->craft_list_buffer == NULL ||
+            ui_state->body_dropdown_buffer == NULL);
+}
+
 void gui_init() {
     GuiLoadStyleAmber();
 }
@@ -96,9 +115,7 @@ void render_body_list_ui(SimulationState* sim, RenderState* render_state, UIStat
     int total_items = sim->body_count + sim->craft_count;
 
     // Check if buffer needs rebuilding
-    bool needs_rebuild = (ui_state->cached_body_count != sim->body_count ||
-                         ui_state->cached_craft_count != sim->craft_count ||
-                         ui_state->body_list_buffer == NULL);
+    bool needs_rebuild = needs_body_list_rebuild(ui_state, sim);
 
     if (needs_rebuild) {
         int buffer_size = total_items * (64 + 3 + 1) + 1;
@@ -362,9 +379,13 @@ void render_maneuver_list_ui(SimulationState* sim, RenderState* render_state, UI
     GuiWindowBox(panel_bounds, title);
 
     int craft_maneuver_count = 0;
+    int current_executed_count = 0;
     for (int i = 0; i < sim->maneuver_count; i++) {
         if (sim->maneuvers[i].craft_index == ui_state->selected_craft_index) {
             craft_maneuver_count++;
+            if (sim->maneuvers[i].executed) {
+                current_executed_count++;
+            }
         }
     }
 
@@ -407,8 +428,7 @@ void render_maneuver_list_ui(SimulationState* sim, RenderState* render_state, UI
     }
 
     // Check if buffer needs rebuilding
-    bool needs_rebuild = (ui_state->cached_maneuver_count != sim->maneuver_count ||
-                         ui_state->maneuver_list_buffer == NULL);
+    bool needs_rebuild = needs_maneuver_list_rebuild(ui_state, sim, current_executed_count);
 
     if (needs_rebuild) {
         int buffer_size = craft_maneuver_count * (64 + 10 + 1) + 1;
@@ -437,6 +457,7 @@ void render_maneuver_list_ui(SimulationState* sim, RenderState* render_state, UI
         }
 
         ui_state->cached_maneuver_count = sim->maneuver_count;
+        ui_state->cached_executed_count = current_executed_count;
     }
 
     Rectangle list_bounds = {
@@ -748,10 +769,7 @@ void render_maneuver_hohmann_tab(SimulationState* sim, UIState* ui_state, int x,
         }
     }
 
-    bool needs_rebuild = (ui_state->cached_body_count != sim->body_count ||
-                         ui_state->cached_craft_count != sim->craft_count ||
-                         ui_state->craft_list_buffer == NULL ||
-                         ui_state->body_dropdown_buffer == NULL);
+    bool needs_rebuild = needs_hohmann_rebuild(ui_state, sim);
 
     if (needs_rebuild) {
         int craft_buffer_size = sim->craft_count * 64 + 1;
@@ -1440,17 +1458,7 @@ void delete_maneuver_from_dialog(SimulationState* sim, UIState* ui_state) {
 }
 
 void ui_state_init_buffers(UIState* ui_state) {
-    ui_state->cached_body_count = 0;
-    ui_state->cached_craft_count = 0;
-    ui_state->cached_maneuver_count = 0;
-    ui_state->body_list_buffer_size = 0;
-    ui_state->body_list_buffer = NULL;
-    ui_state->craft_list_buffer_size = 0;
-    ui_state->craft_list_buffer = NULL;
-    ui_state->body_dropdown_buffer_size = 0;
-    ui_state->body_dropdown_buffer = NULL;
-    ui_state->maneuver_list_buffer_size = 0;
-    ui_state->maneuver_list_buffer = NULL;
+    *ui_state = (UIState){0};
 }
 
 void ui_state_free_buffers(UIState* ui_state) {

src/ui_renderer.h

@@ -54,6 +54,7 @@ struct UIState {
     int cached_body_count;
     int cached_craft_count;
     int cached_maneuver_count;
+    int cached_executed_count;
     int body_list_buffer_size;
     char* body_list_buffer;
     int craft_list_buffer_size;