add feature to register multiple "modules"

Author: Sreyas-Sreelal

omp-codegen/src/callbacks.rs

@@ -104,14 +104,27 @@ pub fn create_callback(input: TokenStream) -> TokenStream {
         quote!(
             #[no_mangle]
             pub unsafe extern "C" fn #orig_callback_name(#(#orig_callback_params)*) -> #return_type {
-                crate::runtime::Runtime.as_mut().unwrap().#user_func_name(#(#user_func_args)*)
+                let scripts = crate::runtime::Runtime.as_mut().unwrap();
+                let mut ret = false;
+                for script in scripts.iter_mut() {
+                    ret = script.#user_func_name(#(#user_func_args)*);
+                    if crate::runtime::__terminate_event_chain {
+                        crate::runtime::__terminate_event_chain = false;
+                        return ret;
+                    }
+                }
+                ret
+
             }
         )
     } else {
         quote!(
             #[no_mangle]
             pub unsafe extern "C" fn #orig_callback_name(#(#orig_callback_params)*) {
-                crate::runtime::Runtime.as_mut().unwrap().#user_func_name(#(#user_func_args)*);
+                let scripts = crate::runtime::Runtime.as_mut().unwrap();
+                for script in scripts.iter_mut() {
+                    script.#user_func_name(#(#user_func_args)*);
+                }
             }
         )
     };

omp-gdk/src/lib.rs

@@ -15,7 +15,7 @@ mod runtime;
 
 pub use events::Events;
 pub use omp_codegen::main;
-pub use runtime::Runtime;
+pub use runtime::{Runtime, __terminate_event_chain};
 pub use scripting::actors;
 pub use scripting::checkpoints;
 pub use scripting::classes;

omp-gdk/src/runtime.rs

@@ -1,4 +1,7 @@
 use crate::events::Events;
 
 /// Runtime global object that implements all the callbacks and gamemode data
-pub static mut Runtime: Option<Box<dyn Events + 'static>> = None;
+pub static mut Runtime: Option<Vec<Box<dyn Events + 'static>>> = None;
+
+#[doc(hidden)]
+pub static mut __terminate_event_chain: bool = false;

omp/src/runtime.rs

@@ -1,10 +1,26 @@
-pub use omp_gdk::Runtime;
+pub use omp_gdk::{Runtime, __terminate_event_chain};
 /// Registers the gamemode object and it's events
 #[macro_export]
 macro_rules! register {
     ($name:expr) => {
         unsafe {
-            omp::runtime::Runtime = Some(Box::new($name));
+            if omp::runtime::Runtime.is_none() {
+                omp::runtime::Runtime = Some(Vec::new());
+            }
+            omp::runtime::Runtime
+                .as_mut()
+                .unwrap()
+                .push(Box::new($name));
         }
     };
 }
+
+#[macro_export]
+macro_rules! terminate_event {
+    ($name:expr) => {
+        unsafe {
+            omp::runtime::__terminate_event_chain = true;
+        }
+        return $name
+    };
+}