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using System.Numerics;
using System.Runtime.InteropServices;
using CounterStrikeSharp.API;
using CounterStrikeSharp.API.Core;
using CounterStrikeSharp.API.Modules.Memory;
using CounterStrikeSharp.API.Modules.Utils;
using Vector = CounterStrikeSharp.API.Modules.Utils.Vector;
namespace RayTrace
{
#region Native Structs (matching C++ layout exactly)
[Flags]
public enum InteractionLayers: ulong
{
Solid = 0x1,
Hitboxes = 0x2,
Trigger = 0x4,
Sky = 0x8,
PlayerClip = 0x10,
NPCClip = 0x20,
BlockLOS = 0x40,
BlockLight = 0x80,
Ladder = 0x100,
Pickup = 0x200,
BlockSound = 0x400,
NoDraw = 0x800,
Window = 0x1000,
PassBullets = 0x2000,
WorldGeometry = 0x4000,
Water = 0x8000,
Slime = 0x10000,
TouchAll = 0x20000,
Player = 0x40000,
NPC = 0x80000,
Debris = 0x100000,
Physics_Prop = 0x200000,
NavIgnore = 0x400000,
NavLocalIgnore = 0x800000,
PostProcessingVolume = 0x1000000,
UnusedLayer3 = 0x2000000,
CarriedObject = 0x4000000,
PushAway = 0x8000000,
ServerEntityOnClient = 0x10000000,
CarriedWeapon = 0x20000000,
StaticLevel = 0x40000000,
csgo_team1 = 0x80000000,
csgo_team2 = 0x100000000,
csgo_grenadeclip = 0x200000000,
csgo_droneclip = 0x400000000,
csgo_moveable = 0x800000000,
csgo_opaque = 0x1000000000,
csgo_monster = 0x2000000000,
csgo_thrown_grenade = 0x8000000000,
MASK_SHOT_PHYSICS = Solid | PlayerClip | Window | PassBullets | Player | NPC | Physics_Prop,
MASK_SHOT_HITBOX = Hitboxes | Player | NPC,
MASK_SHOT_FULL = MASK_SHOT_PHYSICS | Hitboxes,
MASK_WORLD_ONLY = Solid | Window | PassBullets,
MASK_GRENADE = Solid | Window | Physics_Prop | PassBullets,
MASK_BRUSH_ONLY = Solid | Window,
MASK_PLAYER_MOVE = Solid | Window | PlayerClip | PassBullets,
MASK_NPC_MOVE = Solid | Window | NPCClip | PassBullets
}
[StructLayout(LayoutKind.Explicit, Size = 24)]
public struct TraceOptions
{
[FieldOffset(0)] public ulong InteractsWith;
[FieldOffset(8)] public ulong InteractsExclude;
[FieldOffset(16)] public int DrawBeam;
public TraceOptions()
{
InteractsWith = (ulong)InteractionLayers.MASK_SHOT_PHYSICS;
InteractsExclude = 0;
DrawBeam = 0;
}
public TraceOptions(InteractionLayers interactsWith, InteractionLayers interactsExclude = 0, bool drawBeam = false)
{
InteractsWith = (ulong)interactsWith;
InteractsExclude = (ulong)interactsExclude;
DrawBeam = drawBeam ? 1 : 0;
}
}
[StructLayout(LayoutKind.Explicit, Size = 44)]
public struct TraceResult
{
[FieldOffset(0)] public float EndPosX;
[FieldOffset(4)] public float EndPosY;
[FieldOffset(8)] public float EndPosZ;
[FieldOffset(16)] public nint HitEntity;
[FieldOffset(24)] public float Fraction;
[FieldOffset(28)] public int AllSolid;
[FieldOffset(32)] public float NormalX;
[FieldOffset(36)] public float NormalY;
[FieldOffset(40)] public float NormalZ;
public Vector3 EndPos => new(EndPosX, EndPosY, EndPosZ);
public Vector3 Normal => new(NormalX, NormalY, NormalZ);
public bool DidHit => Fraction < 1.0f;
public bool IsAllSolid => AllSolid != 0;
}
#endregion
public static class CRayTrace
{
private static nint g_pRayTraceHandle = nint.Zero;
private static bool g_bRayTraceLoaded = false;
private static Func<nint, nint, nint, nint, nint, nint, bool>? _traceShape;
private static Func<nint, nint, nint, nint, nint, nint, bool>? _traceEndShape;
public static void Init()
{
g_pRayTraceHandle = (nint)Utilities.MetaFactory("CRayTraceInterface001")!;
if (g_pRayTraceHandle == nint.Zero)
throw new Exception("Failed to get Ray-Trace interface handle. Is Ray-Trace MetaMod module loaded?");
Bind();
g_bRayTraceLoaded = true;
}
private static void Bind()
{
_traceShape = VirtualFunction.Create<nint, nint, nint, nint, nint, nint, bool>(g_pRayTraceHandle, 2);
_traceEndShape = VirtualFunction.Create<nint, nint, nint, nint, nint, nint, bool>(g_pRayTraceHandle, 3);
}
public static unsafe bool TraceShape(Vector origin, QAngle angles, CBaseEntity? ignoreEntity, TraceOptions options, out TraceResult result)
{
result = default;
if (!g_bRayTraceLoaded || g_pRayTraceHandle == nint.Zero)
return false;
TraceResult resultBuffer = default;
TraceOptions optionsBuffer = options;
bool success = _traceShape!(g_pRayTraceHandle,
origin.Handle,
angles.Handle,
ignoreEntity?.Handle ?? nint.Zero,
(nint)(&optionsBuffer),
(nint)(&resultBuffer));
result = resultBuffer;
return success;
}
public static unsafe bool TraceEndShape(Vector origin, Vector endOrigin, CBaseEntity? ignoreEntity, TraceOptions options, out TraceResult result)
{
result = default;
if (!g_bRayTraceLoaded || g_pRayTraceHandle == nint.Zero)
return false;
TraceResult resultBuffer = default;
TraceOptions optionsBuffer = options;
bool success = _traceEndShape!(g_pRayTraceHandle,
origin.Handle,
endOrigin.Handle,
ignoreEntity?.Handle ?? nint.Zero,
(nint)(&optionsBuffer),
(nint)(&resultBuffer));
result = resultBuffer;
return success;
}
}
}