无人机代码修改

src/Client/database/update_enemy_locations_50m.sql

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+-- 更新敌人位置到50米范围内
+-- Update Enemy Locations within 50 meters range
+-- 地图中心：(113.045134, 28.262212)
+-- Map Center: (113.045134, 28.262212)
+
+USE Client;
+
+-- 计算50米对应的经纬度偏移量
+-- 在纬度28.26度附近：
+-- 1度经度 ≈ 98,500米
+-- 1度纬度 ≈ 111,000米
+-- 50米经度偏移 ≈ 50/98500 ≈ 0.0005度
+-- 50米纬度偏移 ≈ 50/111000 ≈ 0.00045度
+
+-- 更新所有敌人位置到50米范围内，分布更紧密
+UPDATE enemy_records SET 
+    longitude = 113.045134 + (RAND() - 0.5) * 0.001,  -- ±0.0005度 ≈ ±50米
+    latitude = 28.262212 + (RAND() - 0.5) * 0.0009,   -- ±0.00045度 ≈ ±50米
+    update_time = NOW()
+WHERE id LIKE 'ENEMY%';
+
+-- 手动设置几个关键敌人位置，确保分布均匀且在50米内
+UPDATE enemy_records SET 
+    longitude = 113.045134, latitude = 28.262212,  -- 正中心
+    update_time = NOW() 
+WHERE id = 'ENEMY001';
+
+UPDATE enemy_records SET 
+    longitude = 113.045134 + 0.0003, latitude = 28.262212 + 0.0003,  -- 东北30米
+    update_time = NOW() 
+WHERE id = 'ENEMY002';
+
+UPDATE enemy_records SET 
+    longitude = 113.045134 - 0.0003, latitude = 28.262212 - 0.0003,  -- 西南30米
+    update_time = NOW() 
+WHERE id = 'ENEMY003';
+
+UPDATE enemy_records SET 
+    longitude = 113.045134 + 0.0003, latitude = 28.262212 - 0.0003,  -- 东南30米
+    update_time = NOW() 
+WHERE id = 'ENEMY004';
+
+UPDATE enemy_records SET 
+    longitude = 113.045134 - 0.0003, latitude = 28.262212 + 0.0003,  -- 西北30米
+    update_time = NOW() 
+WHERE id = 'ENEMY005';
+
+UPDATE enemy_records SET 
+    longitude = 113.045134 + 0.0005, latitude = 28.262212,  -- 正东50米
+    update_time = NOW() 
+WHERE id = 'ENEMY006';
+
+UPDATE enemy_records SET 
+    longitude = 113.045134 - 0.0005, latitude = 28.262212,  -- 正西50米
+    update_time = NOW() 
+WHERE id = 'ENEMY007';
+
+UPDATE enemy_records SET 
+    longitude = 113.045134, latitude = 28.262212 + 0.00045,  -- 正北50米
+    update_time = NOW() 
+WHERE id = 'ENEMY008';
+
+UPDATE enemy_records SET 
+    longitude = 113.045134, latitude = 28.262212 - 0.00045,  -- 正南50米
+    update_time = NOW() 
+WHERE id = 'ENEMY009';
+
+-- 验证更新结果，计算距离中心点的实际距离
+SELECT 
+    id,
+    ROUND(longitude, 7) as longitude,
+    ROUND(latitude, 7) as latitude,
+    threat_level,
+    status,
+    -- 计算距离中心点的距离（米）
+    ROUND(
+        6371000 * 2 * ASIN(
+            SQRT(
+                POW(SIN(RADIANS(28.262212 - latitude) / 2), 2) +
+                COS(RADIANS(latitude)) * COS(RADIANS(28.262212)) *
+                POW(SIN(RADIANS(113.045134 - longitude) / 2), 2)
+            )
+        ), 1
+    ) as distance_meters,
+    update_time
+FROM enemy_records 
+ORDER BY distance_meters, threat_level DESC, id;
+
+-- 显示统计信息
+SELECT 
+    '地图中心坐标' as location_type,
+    113.045134 as longitude,
+    28.262212 as latitude,
+    0 as distance_meters
+UNION ALL
+SELECT 
+    '敌人位置范围',
+    CONCAT(ROUND(MIN(longitude), 7), ' ~ ', ROUND(MAX(longitude), 7)),
+    CONCAT(ROUND(MIN(latitude), 7), ' ~ ', ROUND(MAX(latitude), 7)),
+    ROUND(MAX(
+        6371000 * 2 * ASIN(
+            SQRT(
+                POW(SIN(RADIANS(28.262212 - latitude) / 2), 2) +
+                COS(RADIANS(latitude)) * COS(RADIANS(28.262212)) *
+                POW(SIN(RADIANS(113.045134 - longitude) / 2), 2)
+            )
+        )
+    ), 1)
+FROM enemy_records;
+
+-- 验证所有敌人都在50米范围内
+SELECT 
+    COUNT(*) as total_enemies,
+    COUNT(CASE WHEN 
+        6371000 * 2 * ASIN(
+            SQRT(
+                POW(SIN(RADIANS(28.262212 - latitude) / 2), 2) +
+                COS(RADIANS(latitude)) * COS(RADIANS(28.262212)) *
+                POW(SIN(RADIANS(113.045134 - longitude) / 2), 2)
+            )
+        ) <= 50 
+    THEN 1 END) as enemies_within_50m,
+    ROUND(AVG(
+        6371000 * 2 * ASIN(
+            SQRT(
+                POW(SIN(RADIANS(28.262212 - latitude) / 2), 2) +
+                COS(RADIANS(latitude)) * COS(RADIANS(28.262212)) *
+                POW(SIN(RADIANS(113.045134 - longitude) / 2), 2)
+            )
+        )
+    ), 1) as avg_distance_meters
+FROM enemy_records;