#pragma once

// ============================================================================
// block_interaction.h - 交互系统
// ============================================================================

#include "block_workspace.h"

typedef struct {
    int mouse_x, mouse_y;
    int mouse_down;
    int mouse_button;       // 0=left, 1=right, 2=middle
    int key;
    int key_pressed;
    
    // 拖拽状态
    Block* dragging_block;
    float drag_offset_x, drag_offset_y;
    
    // 连接状态
    BlockSlot* connecting_from;
    float connect_start_x, connect_start_y;
    
    // 选择状态
    Block* selected_block;
    
    // 平移状态
    int panning;
    float pan_start_x, pan_start_y;
    float view_start_x, view_start_y;
} BlockInteraction;

// 初始化
void interaction_init(BlockInteraction* inter);

// 处理输入事件
void interaction_mouse_move(BlockInteraction* inter, BlockWorkspace* ws, int x, int y);
void interaction_mouse_down(BlockInteraction* inter, BlockWorkspace* ws, int button);
void interaction_mouse_up(BlockInteraction* inter, BlockWorkspace* ws, int button);
void interaction_key_down(BlockInteraction* inter, BlockWorkspace* ws, int key);
void interaction_mouse_wheel(BlockInteraction* inter, BlockWorkspace* ws, int delta);

// 更新 (每帧调用)
void interaction_update(BlockInteraction* inter, BlockWorkspace* ws);