Implement hotloading

* This commit implements dltools.{c,h}: _A simple wrapper around libdl / dlfcn.h_
* Reload states when done initializing engine, if hotloading is enabled.
* Adds general function types for state functions.

1 files changed, 13 insertions, 0 deletions

diff --git a/src/engine.c b/src/engine.c
index fa528c0..36eb349 100644
--- a/src/engine.c
+++ b/src/engine.c
@@ -379,6 +379,19 @@ Platform *engine_init(
 
 	GLOBAL_PLATFORM = p;
 
+
+#ifdef DAW_BUILD_HOTRELOAD
+
+#define State(name)                                                             \
+if (!State_reload(STATE_##name)) {                                              \
+    ERROR("Failed to reload shared object file for state %s", #name );          \
+};
+
+#include <states/list_of_states.h>
+#undef State
+
+#endif
+
 	return p;
 }