Just a patch to chocolate doom I did a long time ago that adds in doom+ limits. I had this working on older chocolate doom but I updated it for version 2.0.0. Enjoy the patch file. How to use is patch -p0 -i <file_name> while you are in the root directory of chocolate_doom.

gistfile1.txt

--- src/doom/p_spec.c	Mon Jan 19 16:26:36 1970
+++ src/doom/p_spec.c	Mon Jan 19 16:26:36 1970
@@ -144 +144 @@
-#define MAXLINEANIMS            64
+#define MAXLINEANIMS            16384
--- src/doom/p_spec.h	Mon Jan 19 16:26:36 1970
+++ src/doom/p_spec.h	Mon Jan 19 16:26:36 1970
@@ -311 +311 @@
-#define MAXPLATS		30
+#define MAXPLATS		7680
--- src/doom/r_defs.h	Mon Jan 19 16:26:36 1970
+++ src/doom/r_defs.h	Mon Jan 19 16:26:36 1970
@@ -57 +57 @@
-#define MAXDRAWSEGS		256
+#define MAXDRAWSEGS		2048
--- src/doom/r_plane.c	Mon Jan 19 16:26:36 1970
+++ src/doom/r_plane.c	Mon Jan 19 16:26:36 1970
@@ -53 +53 @@
-#define MAXVISPLANES	128
+#define MAXVISPLANES	1024
@@ -60 +60 @@
-#define MAXOPENINGS	SCREENWIDTH*64
+#define MAXOPENINGS	SCREENWIDTH*256
--- src/doom/r_things.h	Mon Jan 19 16:26:36 1970
+++ src/doom/r_things.h	Mon Jan 19 16:26:36 1970
@@ -33 +33 @@
-#define MAXVISSPRITES  	128
+#define MAXVISSPRITES  	1024