Fix djui interactable crash when they get destroyed

src/pc/djui/djui_base.c

@@ -1,5 +1,6 @@
 #include <string.h>
 #include "djui.h"
+#include "djui_interactable.h"
 
   ////////////////
  // properties //
@@ -389,6 +390,13 @@ void djui_base_destroy(struct DjuiBase* base) {
         base->interactable = NULL;
     }
 
+    // remove from interactable variable
+    if (base == gDjuiHovered)           { gDjuiHovered = NULL; }
+    if (base == gDjuiCursorDownOn)      { gDjuiCursorDownOn = NULL; }
+    if (base == gInteractableFocus)     { gInteractableFocus = NULL; }
+    if (base == gInteractableBinding)   { gInteractableBinding = NULL; }
+    if (base == gInteractableMouseDown) { gInteractableMouseDown = NULL; }
+
     // destroy this
     base->destroy(base);
 }

src/pc/djui/djui_checkbox.c

@@ -2,6 +2,7 @@
 
 static void djui_checkbox_update_style(struct DjuiBase* base) {
     struct DjuiCheckbox* checkbox = (struct DjuiCheckbox*)base;
+    if (!checkbox) { return; }
     if (!checkbox->base.enabled) {
         djui_base_set_border_color(&checkbox->rect->base, 93, 93, 93, 255);
         djui_base_set_color(&checkbox->rect->base, 0, 0, 0, 0);

src/pc/djui/djui_interactable.c

@@ -27,7 +27,7 @@ struct DjuiBase* gDjuiHovered = NULL;
 struct DjuiBase* gDjuiCursorDownOn = NULL;
 struct DjuiBase* gInteractableFocus = NULL;
 struct DjuiBase* gInteractableBinding = NULL;
-static struct DjuiBase* sMouseDown    = NULL;
+struct DjuiBase* gInteractableMouseDown    = NULL;
 bool gInteractableOverridePad         = false;
 OSContPad gInteractablePad            = { 0 };
 static OSContPad sLastInteractablePad = { 0 };
@@ -399,17 +399,17 @@ void djui_interactable_update(void) {
     } else if ((padButtons & PAD_BUTTON_A) || (mouseButtons & MOUSE_BUTTON_1)) {
         // cursor down events
         if (gDjuiHovered != NULL) {
-            sMouseDown = gDjuiHovered;
+            gInteractableMouseDown = gDjuiHovered;
             gDjuiHovered = NULL;
-            djui_interactable_on_cursor_down_begin(sMouseDown, !mouseButtons);
+            djui_interactable_on_cursor_down_begin(gInteractableMouseDown, !mouseButtons);
         } else {
-            djui_interactable_on_cursor_down(sMouseDown);
+            djui_interactable_on_cursor_down(gInteractableMouseDown);
         }
     } else {
         // cursor up event
-        if (sMouseDown != NULL) {
-            djui_interactable_on_cursor_down_end(sMouseDown);
-            sMouseDown = NULL;
+        if (gInteractableMouseDown != NULL) {
+            djui_interactable_on_cursor_down_end(gInteractableMouseDown);
+            gInteractableMouseDown = NULL;
         }
         struct DjuiBase* lastHovered = gDjuiHovered;
         gDjuiHovered = NULL;

src/pc/djui/djui_interactable.h

@@ -46,6 +46,7 @@ extern struct DjuiBase* gDjuiHovered;
 extern struct DjuiBase* gDjuiCursorDownOn;
 extern struct DjuiBase* gInteractableFocus;
 extern struct DjuiBase* gInteractableBinding;
+extern struct DjuiBase* gInteractableMouseDown;
 
 bool djui_interactable_is_binding(void);
 void djui_interactable_set_binding(struct DjuiBase* base);

src/pc/gfx/gfx_pc.c

@@ -314,7 +314,7 @@ static bool gfx_texture_cache_lookup(int tile, struct TextureHashmapNode **n, co
     hash = (hash >> HASH_SHIFT) & HASH_MASK;
 
     struct TextureHashmapNode **node = &gfx_texture_cache.hashmap[hash];
-    while (*node != NULL && *node - gfx_texture_cache.pool < (int)gfx_texture_cache.pool_pos) {
+    while (node != NULL && *node != NULL && *node - gfx_texture_cache.pool < (int)gfx_texture_cache.pool_pos) {
         if (CMPADDR((*node)->texture_addr, orig_addr) && (*node)->fmt == fmt && (*node)->siz == siz) {
             gfx_rapi->select_texture(tile, (*node)->texture_id);
             *n = *node;