Merge pull request 'add a function to disconnect all input listeners, call this function every time a scene is loaded exclusively' (#15) from input-reset into main

Reviewed-on: #15

src/corelib/input.c

@@ -189,3 +189,7 @@ int input_get_mousedown(int mousebtn) {
 	uint32_t mask = SDL_BUTTON(mousebtn);
 	return (SDL_GetMouseState(NULL, NULL) & mask) != 0;
 }
+
+void input_disconnect_all() {
+	g_key_listeners_endptr = g_key_listeners;
+}

src/corelib/input.h

@@ -30,6 +30,8 @@ extern void input_init();
 extern void update_input();
 extern void input_notify_event(SDL_Event event);
 
+extern void input_disconnect_all();
+
 #ifdef __cplusplus
 }
 #endif

src/corelib/scene.c

@@ -1,6 +1,7 @@
 #include "scene.h"
 
 #include "ctype.h"
+#include "input.h"
 #include "stdint.h"
 #include "stddef.h"
 #include "stdlib.h"
@@ -200,6 +201,7 @@ int _validate_scene(FILE* file) {
 void load_scene(const char* filename) {
 	FILE* file = fopen(filename, "r");
 	if(_validate_scene(file)) {
+		input_disconnect_all();
 		world_clear();
 		_parse_scene(file);
 		fclose(file);