From 37cbaa4a3ceba493057c764cfe5d283b2b23a63d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dominik=20Madar=C3=A1sz?= <zaklaus@outlook.com>
Date: Wed, 3 Nov 2021 16:41:42 +0100
Subject: [PATCH] Restrict item overdraw placement

---
 code/game/src/items.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/code/game/src/items.c b/code/game/src/items.c
index e54e88b..3c6380a 100644
--- a/code/game/src/items.c
+++ b/code/game/src/items.c
@@ -54,7 +54,13 @@ void item_use(ecs_world_t *ecs, ItemDrop *it, Position p, uint64_t udata) {
         case UKIND_HOLD: /* NOOP */ break;
         case UKIND_PLACE:{
             world_block_lookup l = world_block_from_realpos(p.x, p.y);
-            if (l.block_id > 0) {
+            if (l.is_outer && l.block_id > 0) {
+                // NOTE(zaklaus): Check if block is a placeable item, cancel the placement if not met
+                asset_id item_asset = blocks_get_asset(l.block_id);
+                uint16_t item_asset_id = item_find(item_asset);
+                if (item_asset_id == ASSET_INVALID) return;
+                if (item_get_usage(item_asset_id) > UKIND_END_PLACE) return;
+                
                 world_chunk_destroy_block(p.x, p.y, true);
             }
             world_chunk_replace_block(l.chunk_id, l.id, blocks_find(desc->place.kind + (asset_id)udata));