[modding] Implement Vehicles & Fix Animations (#109)

* Train works

* Fix minimap

* Fix highway

* Fix

* Refactor train and boat

* Update

* Implement Trucks

* Fix tanker

* Finish implementing vehicles

* Fix animations

* Fix spawn players

* Fix spawn players

* Fix loading custom data

---------

Co-authored-by: MegaMech <7255464+MegaMech@users.noreply.github.com>

include/actor_types.h

@@ -4,6 +4,7 @@
 #include <libultraship.h>
 #include <macros.h>
 #include <common_structs.h>
+#include <assert.h>
 
 // #pragma GCC diagnostic push
 // #pragma GCC diagnostic ignored "-Wmicrosoft-extension"
@@ -159,9 +160,8 @@ struct RailroadCrossing {
     /* 0x00 */ s16 type;
     /* 0x02 */ s16 flags;
     /* 0x04 */ s16 someTimer;
-    /* 0x06 */ s16 crossingId;
-    /* 0x08 */ f32 unk_08;
-    /* 0x0C */ f32 unk_0C;
+    /* 0x06 */ s16 crossingId; // unused now
+    /* 0x08 */ void* crossingTrigger; // Crossing Trigger Class
     /* 0x10 */ Vec3s rot;
     /* 0x16 */ s16 unk_16;
     /* 0x18 */ Vec3f pos;
@@ -169,6 +169,9 @@ struct RailroadCrossing {
     /* 0x30 */ Collision unk30;
 }; // size = 0x70
 
+// crossingTrigger might ruin struct size when compiled on 32 bit
+static_assert(sizeof(struct RailroadCrossing) == sizeof(struct Actor), "RailroadCrossing struct size does not match base struct size");
+
 struct FallingRock {
     /* 0x00 */ s16 type;
     /* 0x02 */ s16 flags;