From b691c43c44ff180d10e7d4a9afc83b98551ff586 Mon Sep 17 00:00:00 2001
From: daoge_cmd <3523206925@qq.com>
Date: Sun, 1 Mar 2026 12:16:08 +0800
Subject: Initial commit

---
 Minecraft.World/BoatItem.cpp | 129 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 Minecraft.World/BoatItem.cpp

(limited to 'Minecraft.World/BoatItem.cpp')

diff --git a/Minecraft.World/BoatItem.cpp b/Minecraft.World/BoatItem.cpp
new file mode 100644
index 00000000..3499bc02
--- /dev/null
+++ b/Minecraft.World/BoatItem.cpp
@@ -0,0 +1,129 @@
+#include "stdafx.h"
+#include "net.minecraft.world.entity.player.h"
+#include "net.minecraft.world.entity.item.h"
+#include "net.minecraft.world.level.h"
+#include "net.minecraft.world.level.tile.h"
+#include "net.minecraft.world.phys.h"
+#include "ItemInstance.h"
+#include "BoatItem.h"
+
+BoatItem::BoatItem(int id) : Item( id )
+{
+	this->maxStackSize = 1;
+}
+
+bool BoatItem::TestUse(Level *level, shared_ptr<Player> player)
+{
+	// 4J-PB - added for tooltips to test use
+	// 4J TODO really we should have the crosshair hitresult telling us if it hit water, and at what distance, so we don't need to do this again
+	// if the player happens to have a boat in their hand
+
+	float xRot = player->xRotO + (player->xRot - player->xRotO);
+	float yRot = player->yRotO + (player->yRot - player->yRotO);
+
+	double x = player->xo + (player->x - player->xo);
+	double y = player->yo + (player->y - player->yo) + 1.62 - player->heightOffset;
+	double z = player->zo + (player->z - player->zo);
+
+	Vec3 *from = Vec3::newTemp(x, y, z);
+
+	float yCos = Mth::cos(-yRot * Mth::RAD_TO_GRAD - PI);
+	float ySin = Mth::sin(-yRot * Mth::RAD_TO_GRAD - PI);
+	float xCos = -Mth::cos(-xRot * Mth::RAD_TO_GRAD);
+	float xSin = Mth::sin(-xRot * Mth::RAD_TO_GRAD);
+
+	float xa = ySin * xCos;
+	float ya = xSin;
+	float za = yCos * xCos;
+
+	double range = 5;
+	Vec3 *to = from->add(xa * range, ya * range, za * range);
+	HitResult *hr = level->clip(from, to, true);
+	if (hr == NULL) return false;
+
+	if (hr->type == HitResult::TILE)
+	{
+		delete hr;
+		return true;
+	}
+	delete hr;
+	return false;
+}
+shared_ptr<ItemInstance> BoatItem::use(shared_ptr<ItemInstance> itemInstance, Level *level, shared_ptr<Player> player)
+{
+	float a = 1;
+
+	float xRot = player->xRotO + (player->xRot - player->xRotO) * a;
+	float yRot = player->yRotO + (player->yRot - player->yRotO) * a;
+
+	double x = player->xo + (player->x - player->xo) * a;
+	double y = player->yo + (player->y - player->yo) * a + 1.62 - player->heightOffset;
+	double z = player->zo + (player->z - player->zo) * a;
+
+	Vec3 *from = Vec3::newTemp(x, y, z);
+
+	float yCos = Mth::cos(-yRot * Mth::RAD_TO_GRAD - PI);
+	float ySin = Mth::sin(-yRot * Mth::RAD_TO_GRAD - PI);
+	float xCos = -Mth::cos(-xRot * Mth::RAD_TO_GRAD);
+	float xSin = Mth::sin(-xRot * Mth::RAD_TO_GRAD);
+
+	float xa = ySin * xCos;
+	float ya = xSin;
+	float za = yCos * xCos;
+
+	double range = 5;
+	Vec3 *to = from->add(xa * range, ya * range, za * range);
+	HitResult *hr = level->clip(from, to, true);
+	if (hr == NULL) return itemInstance;
+
+	// check entity collision
+	Vec3 *b = player->getViewVector(a);
+	bool hitEntity = false;
+	float overlap = 1;
+	vector<shared_ptr<Entity> > *objects = level->getEntities(player, player->bb->expand(b->x * (range), b->y * (range), b->z * (range))->grow(overlap, overlap, overlap));
+	//for (int i = 0; i < objects.size(); i++) {
+	for(AUTO_VAR(it, objects->begin()); it != objects->end(); ++it)
+	{
+		shared_ptr<Entity> e = *it; //objects.get(i);
+		if (!e->isPickable()) continue;
+
+		float rr = e->getPickRadius();
+		AABB *bb = e->bb->grow(rr, rr, rr);
+		if (bb->contains(from))
+		{
+			hitEntity = true;
+		}
+	}
+	if (hitEntity)
+	{
+		return itemInstance;
+	}
+
+	if (hr->type == HitResult::TILE)
+	{
+		int xt = hr->x;
+		int yt = hr->y;
+		int zt = hr->z;
+
+		if (!level->isClientSide) 
+		{
+			if (level->getTile(xt, yt, zt) == Tile::topSnow_Id) yt--;
+			if( level->countInstanceOf(eTYPE_BOAT, true) < Level::MAX_XBOX_BOATS )		// 4J - added limit
+			{
+				level->addEntity( shared_ptr<Boat>( new Boat(level, xt + 0.5f, yt + 1.0f, zt + 0.5f) ) );
+				if (!player->abilities.instabuild)
+				{
+					itemInstance->count--;
+				}
+			}
+			else
+			{
+				// display a message to say max boats has been hit
+				player->displayClientMessage(IDS_MAX_BOATS );
+			}
+		}
+	}
+	delete hr;
+
+	return itemInstance;
+}
\ No newline at end of file
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