{"id":2596,"date":"2026-05-12T11:42:07","date_gmt":"2026-05-12T02:42:07","guid":{"rendered":"https:\/\/yukun-unreal.com\/?p=2596"},"modified":"2026-05-12T11:42:09","modified_gmt":"2026-05-12T02:42:09","slug":"%e3%80%90unrealengine%e3%80%91c%e3%81%a7linetrace%e3%82%92%e9%a3%9b%e3%81%b0%e3%81%97%e3%81%a6%e3%81%bf%e3%82%88%e3%81%86%ef%bc%81","status":"publish","type":"post","link":"https:\/\/yukun-unreal.com\/?p=2596","title":{"rendered":"\u3010UnrealEngine\u3011C++\u3067LineTrace\u3092\u98db\u3070\u3057\u3066\u307f\u3088\u3046\uff01"},"content":{"rendered":"\n<p>\u753b\u50cf\u306e\u3088\u3046\u306b\u4eca\u56de\u306fLineTrace\u3092\u30d7\u30ec\u30a4\u30e4\u30fc\u30ad\u30e3\u30e9\u30af\u30bf\u30fc\u304b\u3089\u771f\u3063\u3059\u3050\u98db\u3070\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"519\" src=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-7-1024x519.png\" alt=\"\" class=\"wp-image-2597\" srcset=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-7-1024x519.png 1024w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-7-300x152.png 300w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-7-768x389.png 768w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-7.png 1178w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\u307e\u305a\u306fC++\u306e\u30d5\u30a9\u30eb\u30c0\u76f4\u4e0b\u306b\u3042\u308b\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u540d\u3068\u540c\u3058\u540d\u524d\u306e\u30d5\u30a9\u30eb\u30c0\u306b\u30d7\u30ec\u30a4\u30e4\u30fc\u30ad\u30e3\u30e9\u30af\u30bf\u30fc\u304c\u3042\u308b\u306e\u3067\u3053\u3061\u3089\u3092\u958b\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"428\" src=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-8-1024x428.png\" alt=\"\" class=\"wp-image-2598\" srcset=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-8-1024x428.png 1024w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-8-300x125.png 300w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-8-768x321.png 768w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-8.png 1245w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\u307e\u305a\u306f\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u306b\u30c8\u30ec\u30fc\u30b9\u7528\u306e\u95a2\u6570\u3092\u4f5c\u6210\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u25c6\u30b3\u30fc\u30c9<br>UFUNCTION(BlueprintCallable)<br>virtual void DoTrace();<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"539\" src=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-9-1024x539.png\" alt=\"\" class=\"wp-image-2599\" srcset=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-9-1024x539.png 1024w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-9-300x158.png 300w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-9-768x404.png 768w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-9.png 1210w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\u4f5c\u6210\u3067\u304d\u305f\u3089\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u306b\u79fb\u52d5\u3002<\/p>\n\n\n\n<p>\u3055\u3063\u304d\u4f5c\u6210\u3057\u305fDoTrace\u95a2\u6570\u306e\u4e2d\u306e\u51e6\u7406\u3092\u3053\u3053\u3067\u306f\u8a18\u8ff0\u3057\u3066\u3044\u304f\u3002\u3042\u306a\u305f\u304c\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u3044\u308b\u3068\u304d\u306b\u306f\u304a\u305d\u3089\u304f\u4e00\u756a\u4e0b\u306b\u300c \uff5d\u300d\u2190\u3053\u308c\u304c\u3042\u308b\u3088\u3002<\/p>\n\n\n\n<p>AStudyProjectCharacter\u2192A+\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u540d+Character.h<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div style=\"margin:20px 0;\">\n\n  <!-- \u898b\u51fa\u3057 -->\n  <div style=\"\n    font-weight:bold;\n    margin-bottom:8px;\n  \">\n    \u3053\u306e\u30b3\u30fc\u30c9\u3092\u30d6\u30ed\u30c3\u30af\u5185\u306b\u8ffd\u52a0\u3057\u3066\u307e\u3059\uff01\n  <\/div>\n\n  <!-- \u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af -->\n  <div style=\"\n    position: relative;\n    background:#0d0d0d;\n    border-top:3px solid #ff2b2b;\n    border-bottom:3px solid #ff2b2b;\n    padding:16px;\n    font-family: Consolas, monospace;\n    box-shadow:0 0 12px rgba(255,43,43,0.25);\n    overflow:hidden;\n  \">\n\n    <!-- \u53f3\u5074\u306b\u3060\u3051\u4f38\u3070\u3059\u30ec\u30a4\u30e4\u30fc -->\n    <div style=\"\n      position:absolute;\n      top:0;\n      left:0;\n      width:100vw;\n      height:100%;\n      background:#0d0d0d;\n      z-index:-1;\n    \"><\/div>\n\n    <!-- \u30bf\u30a4\u30c8\u30eb -->\n    <div style=\"\n      color:#ff2b2b;\n      font-size:13px;\n      margin-bottom:6px;\n    \">\n      C++ Example\n    <\/div>\n\n    <!-- \u30b3\u30fc\u30c9 -->\n    <pre style=\"margin:0;\">\n<code style=\"\n  color:#e6e6e6;\n  font-size:14px;\n  line-height:1.6;\n\">\nvoid AStudyProjectCharacter::DoTrace()\n{\n\tFVector Start = GetActorLocation();\n\n\tFVector End = Start + GetActorForwardVector() * 10000.f;\n\n\tFHitResult Hit;\n\n\tbool bHit = GetWorld()->LineTraceSingleByChannel(\n\t\tHit,\n\t\tStart,\n\t\tEnd,\n\t\tECC_Visibility\n\t);\n\t\n<\/code>\n    <\/pre>\n\n  <\/div>\n\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"509\" src=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-10-1024x509.png\" alt=\"\" class=\"wp-image-2600\" srcset=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-10-1024x509.png 1024w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-10-300x149.png 300w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-10-768x382.png 768w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-10.png 1319w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\u3053\u308c\u3067\u30c8\u30ec\u30fc\u30b9\u306e\u51e6\u7406\u305d\u306e\u3082\u306e\u306f\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3066\u306f\u3044\u308b\u3002\u3057\u304b\u3057\u3001\u7dda\u304c\u53ef\u8996\u5316\u3055\u308c\u3066\u304a\u3089\u305a\u78ba\u8a8d\u3057\u305a\u3089\u3044\u306e\u3067\u3001\u98db\u3070\u3057\u3066\u3044\u308b\u30e9\u30a4\u30f3\u3092\u898b\u3048\u308b\u3088\u3046\u306b\u3057\u3088\u3046\uff01<\/p>\n\n\n\n<p>\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u306e\u4e00\u756a\u4e0a\u306b\u79fb\u52d5\u3057\u3066\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n\n\n\n<p>\u25c6\u30b3\u30fc\u30c9<br>#include &#8220;DrawDebugHelpers.h&#8221;<\/p>\n\n\n\n<p>\u3053\u308c\u306f\u5404\u7a2e\u30c7\u30d0\u30c3\u30b0\u7cfb\u95a2\u6570\u3092\u4f7f\u3048\u308b\u3088\u3046\u306b\u3059\u308b\u30b3\u30fc\u30c9\u3002\u3053\u308c\u304c\u306a\u3044\u3068\u30c7\u30d0\u30c3\u30b0\u7528\u306e\u95a2\u6570\u3092\u8a18\u8ff0\u3057\u305f\u3068\u3053\u308d\u3067\u3001\u305d\u3093\u306a\u95a2\u6570\u306f\u5b58\u5728\u3057\u306a\u3044\u3088\uff01\u3068\u3046\u3044\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u306e\u3067\u5fd8\u308c\u305a\u306b\u8a18\u8ff0\u3057\u3088\u3046\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"427\" src=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-11-1024x427.png\" alt=\"\" class=\"wp-image-2601\" srcset=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-11-1024x427.png 1024w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-11-300x125.png 300w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-11-768x320.png 768w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-11.png 1112w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\u30e9\u30a4\u30f3\u30c8\u30ec\u30fc\u30b9\u306e\u95a2\u6570\u304c\u3042\u308b\u5834\u6240\u306b\u623b\u308a\u3001\u95a2\u6570\u5185\u306b\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n\n\n\n<div style=\"margin:20px 0;\">\n\n  <!-- \u898b\u51fa\u3057 -->\n  <div style=\"\n    font-weight:bold;\n    margin-bottom:8px;\n  \">\n    \u3053\u306e\u30b3\u30fc\u30c9\u3092\u30d6\u30ed\u30c3\u30af\u5185\u306b\u8ffd\u52a0\u3057\u3066\u307e\u3059\uff01\n  <\/div>\n\n  <!-- \u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af -->\n  <div style=\"\n    position: relative;\n    background:#0d0d0d;\n    border-top:3px solid #ff2b2b;\n    border-bottom:3px solid #ff2b2b;\n    padding:16px;\n    font-family: Consolas, monospace;\n    box-shadow:0 0 12px rgba(255,43,43,0.25);\n    overflow:hidden;\n  \">\n\n    <!-- \u53f3\u5074\u306b\u3060\u3051\u4f38\u3070\u3059\u30ec\u30a4\u30e4\u30fc -->\n    <div style=\"\n      position:absolute;\n      top:0;\n      left:0;\n      width:100vw;\n      height:100%;\n      background:#0d0d0d;\n      z-index:-1;\n    \"><\/div>\n\n    <!-- \u30bf\u30a4\u30c8\u30eb -->\n    <div style=\"\n      color:#ff2b2b;\n      font-size:13px;\n      margin-bottom:6px;\n    \">\n      C++ Example\n    <\/div>\n\n    <!-- \u30b3\u30fc\u30c9 -->\n    <pre style=\"margin:0;\">\n<code style=\"\n  color:#e6e6e6;\n  font-size:14px;\n  line-height:1.6;\n\">\nDrawDebugLine(\n\tGetWorld(),\n\tStart,\n\tEnd,\n\tFColor::Red,\n\tfalse,\n\t10.f\n);\n\nif (bHit)\n{\n\tAActor* HitActor = Hit.GetActor();\n\n\tif (HitActor)\n\t{\n\t\tUE_LOG(LogTemp, Warning, TEXT(\"HitActor\"));\n\t}\n}\n\t\n<\/code>\n    <\/pre>\n\n  <\/div>\n\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"542\" src=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-12-1024x542.png\" alt=\"\" class=\"wp-image-2602\" srcset=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-12-1024x542.png 1024w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-12-300x159.png 300w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-12-768x406.png 768w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-12.png 1208w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\u3053\u308c\u3067\u7dda\u306e\u53ef\u8996\u5316\u3068\u30c7\u30d0\u30c3\u30b0\u306e\u4e21\u65b9\u304c\u5b8c\u4e86\u3057\u307e\u3057\u305f\u3002\u3042\u3068\u306f\u3053\u306e\u95a2\u6570\u3092\u547c\u3076\u30a2\u30af\u30bf\u3092\u4f5c\u6210\u3057\u3066\u30b2\u30fc\u30e0\u5185\u306b\u914d\u7f6e\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u65b0\u898fC++\u3092\u4f5c\u6210\u3067\u4f5c\u3063\u305f\u30a2\u30af\u30bf\u3092\u958b\u3044\u3066\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u25c6\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u306f\u3053\u3061\u3089\u306e\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0<br>#include &#8220;Kismet\/GameplayStatics.h&#8221;<br>#include &#8220;StudyProjectCharacter.h&#8221;\uff08\u81ea\u5206\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u540d+Character.h\uff09<\/p>\n\n\n\n<div style=\"margin:20px 0;\">\n\n  <!-- \u898b\u51fa\u3057 -->\n  <div style=\"\n    font-weight:bold;\n    margin-bottom:8px;\n  \">\n    \u3053\u306e\u30b3\u30fc\u30c9\u3092\u30d6\u30ed\u30c3\u30af\u5185\u306b\u8ffd\u52a0\u3057\u3066\u307e\u3059\uff01\n  <\/div>\n\n  <!-- \u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af -->\n  <div style=\"\n    position: relative;\n    background:#0d0d0d;\n    border-top:3px solid #ff2b2b;\n    border-bottom:3px solid #ff2b2b;\n    padding:16px;\n    font-family: Consolas, monospace;\n    box-shadow:0 0 12px rgba(255,43,43,0.25);\n    overflow:hidden;\n  \">\n\n    <!-- \u53f3\u5074\u306b\u3060\u3051\u4f38\u3070\u3059\u30ec\u30a4\u30e4\u30fc -->\n    <div style=\"\n      position:absolute;\n      top:0;\n      left:0;\n      width:100vw;\n      height:100%;\n      background:#0d0d0d;\n      z-index:-1;\n    \"><\/div>\n\n    <!-- \u30bf\u30a4\u30c8\u30eb -->\n    <div style=\"\n      color:#ff2b2b;\n      font-size:13px;\n      margin-bottom:6px;\n    \">\n      C++ Example\n    <\/div>\n\n    <!-- \u30b3\u30fc\u30c9 -->\n    <pre style=\"margin:0;\">\n<code style=\"\n  color:#e6e6e6;\n  font-size:14px;\n  line-height:1.6;\n\">\nAStudyProjectCharacter* Player =\n\tCast<AStudyProjectCharacter>(\n\t\tUGameplayStatics::GetPlayerCharacter(this, 0)\n\t);\n\nif (Player)\n{\n\tPlayer->DoTrace();\n}\n\t\n<\/code>\n    <\/pre>\n\n  <\/div>\n\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"573\" src=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-13-1024x573.png\" alt=\"\" class=\"wp-image-2603\" srcset=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-13-1024x573.png 1024w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-13-300x168.png 300w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-13-768x430.png 768w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-13.png 1117w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"534\" src=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-14-1024x534.png\" alt=\"\" class=\"wp-image-2604\" srcset=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-14-1024x534.png 1024w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-14-300x156.png 300w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-14-768x401.png 768w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-14.png 1254w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\u30b3\u30fc\u30c9\u304c\u3067\u304d\u305f\u3089\u30a2\u30af\u30bf\u3092\u30ef\u30fc\u30eb\u30c9\u5185\u306b\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7\u3057\u3066\u30b2\u30fc\u30e0\u3092\u30d7\u30ec\u30a4\u3057\u3066\u307f\u308b\u3068\u30d7\u30ec\u30a4\u30e4\u30fc\u30ad\u30e3\u30e9\u30af\u30bf\u30fc\u304b\u3089\u30c8\u30ec\u30fc\u30b9\u304c\u98db\u3093\u3067\u308b\u3068\u601d\u3046\u3088\uff01<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"492\" src=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-15-1024x492.png\" alt=\"\" class=\"wp-image-2605\" srcset=\"https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-15-1024x492.png 1024w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-15-300x144.png 300w, https:\/\/yukun-unreal.com\/wp-content\/uploads\/2026\/05\/image-15-768x369.png 768w, 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