diff --git a/src/logic/scripting/api_lua.h b/src/logic/scripting/api_lua.h
index 7ea0d477..f8a50a7d 100644
--- a/src/logic/scripting/api_lua.h
+++ b/src/logic/scripting/api_lua.h
@@ -218,23 +218,28 @@ static const luaL_Reg playerlib [] = {
 
 /* == blocks-related functions == */
 static int l_block_name(lua_State* L) {
-    int id = lua_tointeger(L, 1);
-    auto def = scripting::content->getIndices()->getBlockDef(id);
+    auto indices = scripting::content->getIndices();
+    lua::luaint id = lua_tointeger(L, 1);
+    if (id < 0 || size_t(id) >= indices->countBlockDefs()) {
+        lua_pushnil(L);
+        return 1;
+    }
+    auto def = indices->getBlockDef(id);
     lua_pushstring(L, def->name.c_str());
     return 1;
 }
 
 static int l_is_solid_at(lua_State* L) {
-    int x = lua_tointeger(L, 1);
-    int y = lua_tointeger(L, 2);
-    int z = lua_tointeger(L, 3);
+    lua::luaint x = lua_tointeger(L, 1);
+    lua::luaint y = lua_tointeger(L, 2);
+    lua::luaint z = lua_tointeger(L, 3);
 
     lua_pushboolean(L, scripting::level->chunks->isSolidBlock(x, y, z));
     return 1;
 }
 
 static int l_blocks_count(lua_State* L) {
-    lua_pushinteger(L, scripting::content->getIndices()->countBlockDefs());
+    lua_pushinteger(L, scripting::indices->countBlockDefs());
     return 1;
 }
 
@@ -245,12 +250,15 @@ static int l_block_index(lua_State* L) {
 }
 
 static int l_set_block(lua_State* L) {
-    int x = lua_tointeger(L, 1);
-    int y = lua_tointeger(L, 2);
-    int z = lua_tointeger(L, 3);
-    int id = lua_tointeger(L, 4);    
-    int states = lua_tointeger(L, 5);
+    lua::luaint x = lua_tointeger(L, 1);
+    lua::luaint y = lua_tointeger(L, 2);
+    lua::luaint z = lua_tointeger(L, 3);
+    lua::luaint id = lua_tointeger(L, 4);    
+    lua::luaint states = lua_tointeger(L, 5);
     bool noupdate = lua_toboolean(L, 6);
+    if (id < 0 || size_t(id) >= scripting::indices->countBlockDefs()) {
+        return 0;
+    }
     scripting::level->chunks->set(x, y, z, id, states);
     scripting::level->lighting->onBlockSet(x,y,z, id);
     if (!noupdate)
@@ -259,9 +267,9 @@ static int l_set_block(lua_State* L) {
 }
 
 static int l_get_block(lua_State* L) {
-    int x = lua_tointeger(L, 1);
-    int y = lua_tointeger(L, 2);
-    int z = lua_tointeger(L, 3);
+    lua::luaint x = lua_tointeger(L, 1);
+    lua::luaint y = lua_tointeger(L, 2);
+    lua::luaint z = lua_tointeger(L, 3);
     voxel* vox = scripting::level->chunks->get(x, y, z);
     int id = vox == nullptr ? -1 : vox->id;
     lua_pushinteger(L, id);
@@ -269,9 +277,9 @@ static int l_get_block(lua_State* L) {
 }
 
 static int l_get_block_x(lua_State* L) {
-    int x = lua_tointeger(L, 1);
-    int y = lua_tointeger(L, 2);
-    int z = lua_tointeger(L, 3);
+    lua::luaint x = lua_tointeger(L, 1);
+    lua::luaint y = lua_tointeger(L, 2);
+    lua::luaint z = lua_tointeger(L, 3);
     voxel* vox = scripting::level->chunks->get(x, y, z);
     if (vox == nullptr) {
         return lua::pushivec3(L, 1, 0, 0);
@@ -286,9 +294,9 @@ static int l_get_block_x(lua_State* L) {
 }
 
 static int l_get_block_y(lua_State* L) {
-    int x = lua_tointeger(L, 1);
-    int y = lua_tointeger(L, 2);
-    int z = lua_tointeger(L, 3);
+    lua::luaint x = lua_tointeger(L, 1);
+    lua::luaint y = lua_tointeger(L, 2);
+    lua::luaint z = lua_tointeger(L, 3);
     voxel* vox = scripting::level->chunks->get(x, y, z);
     if (vox == nullptr) {
         return lua::pushivec3(L, 0, 1, 0);
@@ -303,9 +311,9 @@ static int l_get_block_y(lua_State* L) {
 }
 
 static int l_get_block_z(lua_State* L) {
-    int x = lua_tointeger(L, 1);
-    int y = lua_tointeger(L, 2);
-    int z = lua_tointeger(L, 3);
+    lua::luaint x = lua_tointeger(L, 1);
+    lua::luaint y = lua_tointeger(L, 2);
+    lua::luaint z = lua_tointeger(L, 3);
     voxel* vox = scripting::level->chunks->get(x, y, z);
     if (vox == nullptr) {
         return lua::pushivec3(L, 0, 0, 1);
@@ -320,9 +328,9 @@ static int l_get_block_z(lua_State* L) {
 }
 
 static int l_get_block_states(lua_State* L) {
-    int x = lua_tointeger(L, 1);
-    int y = lua_tointeger(L, 2);
-    int z = lua_tointeger(L, 3);
+    lua::luaint x = lua_tointeger(L, 1);
+    lua::luaint y = lua_tointeger(L, 2);
+    lua::luaint z = lua_tointeger(L, 3);
     voxel* vox = scripting::level->chunks->get(x, y, z);
     int states = vox == nullptr ? 0 : vox->states;
     lua_pushinteger(L, states);
@@ -330,11 +338,11 @@ static int l_get_block_states(lua_State* L) {
 }
 
 static int l_get_block_user_bits(lua_State* L) {
-    int x = lua_tointeger(L, 1);
-    int y = lua_tointeger(L, 2);
-    int z = lua_tointeger(L, 3);
-    int offset = lua_tointeger(L, 4) + VOXEL_USER_BITS_OFFSET;
-    int bits = lua_tointeger(L, 5);
+    lua::luaint x = lua_tointeger(L, 1);
+    lua::luaint y = lua_tointeger(L, 2);
+    lua::luaint z = lua_tointeger(L, 3);
+    lua::luaint offset = lua_tointeger(L, 4) + VOXEL_USER_BITS_OFFSET;
+    lua::luaint bits = lua_tointeger(L, 5);
 
     voxel* vox = scripting::level->chunks->get(x, y, z);
     if (vox == nullptr) {
@@ -348,14 +356,14 @@ static int l_get_block_user_bits(lua_State* L) {
 }
 
 static int l_set_block_user_bits(lua_State* L) {
-    int x = lua_tointeger(L, 1);
-    int y = lua_tointeger(L, 2);
-    int z = lua_tointeger(L, 3);
-    int offset = lua_tointeger(L, 4) + VOXEL_USER_BITS_OFFSET;
-    int bits = lua_tointeger(L, 5);
+    lua::luaint x = lua_tointeger(L, 1);
+    lua::luaint y = lua_tointeger(L, 2);
+    lua::luaint z = lua_tointeger(L, 3);
+    lua::luaint offset = lua_tointeger(L, 4) + VOXEL_USER_BITS_OFFSET;
+    lua::luaint bits = lua_tointeger(L, 5);
 
     uint mask = ((1 << bits) - 1) << offset;
-    int value = (lua_tointeger(L, 6) << offset) & mask;
+    lua::luaint value = (lua_tointeger(L, 6) << offset) & mask;
     
     voxel* vox = scripting::level->chunks->get(x, y, z);
     if (vox == nullptr) {
diff --git a/src/logic/scripting/scripting.cpp b/src/logic/scripting/scripting.cpp
index 4d50f9fc..edd11c5b 100644
--- a/src/logic/scripting/scripting.cpp
+++ b/src/logic/scripting/scripting.cpp
@@ -25,6 +25,7 @@ Engine* scripting::engine = nullptr;
 lua::LuaState* scripting::state = nullptr;
 Level* scripting::level = nullptr;
 const Content* scripting::content = nullptr;
+const ContentIndices* scripting::indices = nullptr;
 BlocksController* scripting::blocks = nullptr;
 
 void load_script(fs::path name) {
@@ -77,6 +78,7 @@ wstringconsumer scripting::create_wstring_consumer(
 void scripting::on_world_load(Level* level, BlocksController* blocks) {
     scripting::level = level;
     scripting::content = level->content;
+    scripting::indices = level->content->getIndices();
     scripting::blocks = blocks;
     load_script("world.lua");
 
@@ -103,6 +105,7 @@ void scripting::on_world_quit() {
     }
     scripting::level = nullptr;
     scripting::content = nullptr;
+    scripting::indices = nullptr;
 }
 
 void scripting::on_blocks_tick(const Block* block, int tps) {
@@ -224,5 +227,6 @@ void scripting::close() {
 
     state = nullptr;
     content = nullptr;
+    indices = nullptr;
     level = nullptr;
 }
diff --git a/src/logic/scripting/scripting.h b/src/logic/scripting/scripting.h
index 5cf2636c..dde825ff 100644
--- a/src/logic/scripting/scripting.h
+++ b/src/logic/scripting/scripting.h
@@ -9,6 +9,7 @@ class LuaState;
 
 class Engine;
 class Content;
+class ContentIndices;
 class Level;
 class Block;
 class Player;
@@ -20,6 +21,7 @@ class BlocksController;
 namespace scripting {
     extern Engine* engine;
     extern const Content* content;
+    extern const ContentIndices* indices;
     extern Level* level;
     extern BlocksController* blocks;