From ad9677a14fb8ad1b4048e83a779e5ad36a99f2d0 Mon Sep 17 00:00:00 2001
From: rubenwardy <rubenwardy@gmail.com>
Date: Sat, 26 Aug 2017 07:11:59 +0100
Subject: [PATCH] Check item_drop amount clientside (#6242)

---
 builtin/game/item.lua | 19 ++++++++-----------
 src/game.cpp          |  8 ++++----
 2 files changed, 12 insertions(+), 15 deletions(-)

diff --git a/builtin/game/item.lua b/builtin/game/item.lua
index b416a34b0..2c7200524 100644
--- a/builtin/game/item.lua
+++ b/builtin/game/item.lua
@@ -420,19 +420,16 @@ end
 
 function core.item_drop(itemstack, dropper, pos)
 	if dropper and dropper:is_player() then
-		local v = dropper:get_look_dir()
-		local p = {x=pos.x, y=pos.y+1.2, z=pos.z}
-		local cs = itemstack:get_count()
-		if dropper:get_player_control().sneak then
-			cs = 1
-		end
-		local item = itemstack:take_item(cs)
+		local dir = dropper:get_look_dir()
+		local p = {x = pos.x, y = pos.y + 1.2, z = pos.z}
+		local cnt = itemstack:get_count()
+		local item = itemstack:take_item(cnt)
 		local obj = core.add_item(p, item)
 		if obj then
-			v.x = v.x*2
-			v.y = v.y*2 + 2
-			v.z = v.z*2
-			obj:setvelocity(v)
+			dir.x = dir.x * 2
+			dir.y = dir.y * 2 + 2
+			dir.z = dir.z * 2
+			obj:set_velocity(dir)
 			obj:get_luaentity().dropped_by = dropper:get_player_name()
 			return itemstack
 		end
diff --git a/src/game.cpp b/src/game.cpp
index 4a26bc844..43495e8a6 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -1251,7 +1251,7 @@ protected:
 	void processKeyInput();
 	void processItemSelection(u16 *new_playeritem);
 
-	void dropSelectedItem();
+	void dropSelectedItem(bool single_item = false);
 	void openInventory();
 	void openConsole(float scale, const wchar_t *line=NULL);
 	void toggleFreeMove();
@@ -2499,7 +2499,7 @@ void Game::processUserInput(f32 dtime)
 void Game::processKeyInput()
 {
 	if (wasKeyDown(KeyType::DROP)) {
-		dropSelectedItem();
+		dropSelectedItem(isKeyDown(KeyType::SNEAK));
 	} else if (wasKeyDown(KeyType::AUTOFORWARD)) {
 		toggleAutoforward();
 	} else if (wasKeyDown(KeyType::INVENTORY)) {
@@ -2645,10 +2645,10 @@ void Game::processItemSelection(u16 *new_playeritem)
 }
 
 
-void Game::dropSelectedItem()
+void Game::dropSelectedItem(bool single_item)
 {
 	IDropAction *a = new IDropAction();
-	a->count = 0;
+	a->count = single_item ? 1 : 0;
 	a->from_inv.setCurrentPlayer();
 	a->from_list = "main";
 	a->from_i = client->getPlayerItem();