From bb25dc91d9a83a9f9031ad364f1cbbc1b39a4c7c Mon Sep 17 00:00:00 2001
From: LaG1924 <lag1924@gmail.com>
Date: Mon, 27 Dec 2021 22:49:09 +0500
Subject: Added RegisterLiquid to lua api

---
 cwd/assets/altcraft/scripts/blocks.lua |  6 ++++++
 src/Block.cpp                          | 32 ++++++++++++++++++--------------
 src/Block.hpp                          |  9 +++++++++
 src/Plugin.cpp                         |  8 ++++++++
 4 files changed, 41 insertions(+), 14 deletions(-)

diff --git a/cwd/assets/altcraft/scripts/blocks.lua b/cwd/assets/altcraft/scripts/blocks.lua
index 72a1599..dde4b57 100644
--- a/cwd/assets/altcraft/scripts/blocks.lua
+++ b/cwd/assets/altcraft/scripts/blocks.lua
@@ -33,6 +33,12 @@ local function RegisterBlocks()
 
     AC.RegisterBlock(BlockId.new(7,0), true, "bedrock", "normal")
 
+    AC.RegisterLiquid(BlockId.new(8,0), "blocks/water_flow", "blocks/water_still")
+    AC.RegisterLiquid(BlockId.new(9,0), "blocks/water_flow", "blocks/water_still")
+
+    AC.RegisterLiquid(BlockId.new(10,0), "blocks/lava_flow", "blocks/lava_still")
+    AC.RegisterLiquid(BlockId.new(11,0), "blocks/lava_flow", "blocks/lava_still")
+
     AC.RegisterBlock(BlockId.new(12,0), true, "sand", "normal")
     AC.RegisterBlock(BlockId.new(12,1), true, "red_sand", "normal")
 
diff --git a/src/Block.cpp b/src/Block.cpp
index 85870f6..8af5a4b 100644
--- a/src/Block.cpp
+++ b/src/Block.cpp
@@ -1,25 +1,29 @@
 #include "Block.hpp"
 
 #include <map>
-#include <vector>
 
-#include "Plugin.hpp"
+static std::map<BlockId, BlockInfo> blocks;
+static std::map<BlockId, LiquidInfo> liquids;
 
-static std::vector<BlockInfo> blocks;
-static std::map<BlockId, size_t> staticBlockInfo;
-
-BlockInfo WTFBlock{ true, "", "" };
+static BlockInfo UnknownBlock{ true, "", "" };
+static LiquidInfo UnknownLiquid{ "", "" };
 
 void RegisterStaticBlockInfo(BlockId blockId, BlockInfo blockInfo) {
-	//NOTE: It can be made thread-safe by using atomic incrementer
-	staticBlockInfo[blockId] = blocks.size();
-	blocks.push_back(blockInfo);
+    blocks.emplace(blockId, blockInfo);
+}
+
+void RegisterStaticLiquidInfo(BlockId blockId, LiquidInfo liquidInfo) {
+    liquids[blockId] = liquidInfo;
+    for (uint8_t i = 0; i < 16; i++)
+        blocks.emplace(BlockId{ blockId.id, i }, BlockInfo{ true, "@liquid", liquidInfo.stillTexture });
 }
 
 BlockInfo* GetBlockInfo(BlockId blockId) {
-	auto it = staticBlockInfo.find(blockId);
-	if (it != staticBlockInfo.end())
-		return &blocks.data()[it->second];
-	else
-		return &WTFBlock;
+    auto it = blocks.find(blockId);
+    return it != blocks.end() ? &it->second : &UnknownBlock;
+}
+
+const LiquidInfo& GetBlockLiquidInfo(BlockId blockId) {
+    auto it = liquids.find(blockId);
+    return it != liquids.end() ? it->second : UnknownLiquid;
 }
diff --git a/src/Block.hpp b/src/Block.hpp
index 0fd0e89..535ae68 100644
--- a/src/Block.hpp
+++ b/src/Block.hpp
@@ -47,6 +47,15 @@ struct BlockInfo {
 	std::string variant;	
 };
 
+struct LiquidInfo {
+    std::string flowTexture;
+    std::string stillTexture;
+};
+
 void RegisterStaticBlockInfo(BlockId blockId, BlockInfo blockInfo);
 
+void RegisterStaticLiquidInfo(BlockId blockId, LiquidInfo liquidInfo);
+
 BlockInfo* GetBlockInfo(BlockId blockId);
+
+const LiquidInfo& GetBlockLiquidInfo(BlockId blockId);
diff --git a/src/Plugin.cpp b/src/Plugin.cpp
index 3e06b0c..7a3b716 100644
--- a/src/Plugin.cpp
+++ b/src/Plugin.cpp
@@ -78,6 +78,13 @@ namespace PluginApi {
 			});
 	}
 
+    void RegisterLiquid(BlockId blockId, std::string flowTexture, std::string stillTexture) {
+        RegisterStaticLiquidInfo(blockId, LiquidInfo{
+            flowTexture,
+            stillTexture
+            });
+    }
+
 	void RegisterDimension(int dimId, Dimension dim) {
 		RegisterNewDimension(dimId, dim);
 	}
@@ -286,6 +293,7 @@ void PluginSystem::Init() {
 	apiTable["LogError"] = PluginApi::LogError;
 	apiTable["GetGameState"] = PluginApi::GetGameState;
 	apiTable["RegisterBlock"] = PluginApi::RegisterBlock;
+	apiTable["RegisterLiquid"] = PluginApi::RegisterLiquid;
 	apiTable["RegisterDimension"] = PluginApi::RegisterDimension;
 	apiTable["ConnectToServer"] = PluginApi::ConnectToServer;
 	apiTable["Exit"] = PluginApi::Exit;
-- 
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