Red-exe-Engineer/minecraft-pi-reborn
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Add Minecraft::handleBack Safety Check

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This commit is contained in:
TheBrokenRail 2022-10-20 23:58:40 -04:00
parent 9b4a9994ba
commit f506b10051
1 changed files with 6 additions and 0 deletions
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6
mods/src/input/misc.c
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@ -22,6 +22,12 @@ int input_back() {
// Handle Back Button Presses
static void _handle_back(unsigned char *minecraft) {
// If Minecraft's Level property is initialized, but Minecraft's Player property is NULL, then Minecraft::handleBack may crash.
if ((*(unsigned char **) (minecraft + Minecraft_level_property_offset)) != NULL && (*(unsigned char **) (minecraft + Minecraft_player_property_offset)) == NULL) {
// Unable to safely run Minecraft::handleBack, deferring until safe.
return;
}
// Send Event
unsigned char *minecraft_vtable = *(unsigned char **) minecraft;
Minecraft_handleBack_t Minecraft_handleBack = *(Minecraft_handleBack_t *) (minecraft_vtable + Minecraft_handleBack_vtable_offset);
for (int i = 0; i < back_button_presses; i++) {