From b037d7a0b9212933d3823280407f44709afef58d Mon Sep 17 00:00:00 2001
From: veclavtalica <veclavtalica@tutamail.com>
Date: Tue, 14 Jan 2025 01:35:54 +0300
Subject: [PATCH] /apps/twnlua: ctx uploading

---
 apps/twnlua/bindgen.py | 29 ++++++++++++++++++++++++-----
 apps/twnlua/game.c     |  4 ++++
 2 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/apps/twnlua/bindgen.py b/apps/twnlua/bindgen.py
index 6197329..af61aad 100755
--- a/apps/twnlua/bindgen.py
+++ b/apps/twnlua/bindgen.py
@@ -43,7 +43,22 @@ def to_table(typedesc, variable, indent = 0):
         else:
             raise BaseException("Unhandled return field type '%s'" % (field["type"]))
         binding += ' ' * indent + "lua_setfield(L, -2, \"%s\");\n" % field["name"]
-    # binding += ' ' * indent + "lua_pop(L, 1);\n"
+    return binding
+
+
+def from_table(typedesc, variable, indent = 0):
+    binding = ""
+    for field in typedesc["fields"]:
+        binding += ' ' * indent + "lua_getfield(L, -1, \"%s\");\n" % field["name"]
+        if field["type"] == "float":
+            binding += ' ' * indent + "%s = (float)lua_tonumber(L, -1);\n" % (variable + ".%s" % field["name"])
+        elif field["type"] == "bool":
+            binding += ' ' * indent + "%s = lua_toboolean(L, -1);\n" % (variable + ".%s" % field["name"])
+        elif field["type"] in api["types"]:
+            binding += from_table(api["types"][field["type"]], variable + ".%s" % field["name"], indent + 4)
+        else:
+            raise BaseException("Unhandled return field type '%s'" % (field["type"]))
+        binding += ' ' * indent + "lua_pop(L, 1);\n"
     return binding
 
 
@@ -94,8 +109,6 @@ for procedure, procedure_desc in api["procedures"].items():
             else:
                 raise BaseException("Unhandled parameter type '%s'" % (parameter["type"]))
 
-    # binding += "    lua_pop(L, %i);\n" % (1 + len(procedure_desc["params"]) if "params" in procedure_desc else 0)
-
     if "return" in procedure_desc:
         if procedure_desc["return"] == "bool":
             binding += "    lua_pushboolean(L, (int)(%s(%s)));\n" % (procedure, ", ".join(param["name"] for param in procedure_desc["params"]))
@@ -176,9 +189,9 @@ print(loader)
 
 
 unloader = "extern void bindgen_unload_%s(lua_State *L);\n" % api["name"]
-unloader += "void bindgen_unload_%s(lua_State *L) {\n(void)L;\n" % api["name"]
+unloader += "void bindgen_unload_%s(lua_State *L) {\n    (void)L;\n" % api["name"]
 unloader += '\n'.join(deinitializers)
-unloader += "}\n"
+unloader += "\n}\n"
 print(unloader)
 
 
@@ -188,5 +201,11 @@ if api["name"] == "twn":
     contexter = "extern void bindgen_build_context(lua_State *L);\n"
     contexter += "void bindgen_build_context(lua_State *L) {\n"
     contexter += to_table(api["types"]["Context"], "ctx", 4)
+    contexter += "}\n\n"
+
+    contexter += "extern void bindgen_upload_context(lua_State *L);\n"
+    contexter += "void bindgen_upload_context(lua_State *L) {\n"
+    contexter += from_table(api["types"]["Context"], "ctx", 4)
     contexter += "}"
+
     print(contexter)
diff --git a/apps/twnlua/game.c b/apps/twnlua/game.c
index 5574741..cd9b935 100644
--- a/apps/twnlua/game.c
+++ b/apps/twnlua/game.c
@@ -14,6 +14,7 @@
 void bindgen_load_twn(lua_State *L);
 void bindgen_unload_twn(lua_State *L);
 void bindgen_build_context(lua_State *L);
+void bindgen_upload_context(lua_State *L);
 
 
 /* require will go through physicsfs exclusively so that scripts can be in the data dir */
@@ -170,6 +171,9 @@ void game_tick(void) {
         log_critical("%s", lua_tostring(state->L, -1));
         lua_pop(state->L, 1);
     }
+
+    lua_getglobal(state->L, "ctx");
+    bindgen_upload_context(state->L);
 }