118 lines
3.8 KiB
C++
118 lines
3.8 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: A stationary gun that players can man
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//
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// $NoKeywords: $
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//=============================================================================//
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#include "cbase.h"
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#include "tf_obj_manned_plasmagun_shared.h"
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#include "tf_movedata.h"
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ConVar mannedgun_usethirdperson( "mannedgun_usethirdperson", "1", FCVAR_REPLICATED, "Use third person view while in manned guns built on vehicles." );
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#define MANNED_PLASMAGUN_AIMING_CONE_ANGLE 45.0f // total angle of aiming
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#define MANNED_PLASMAGUN_YAW_SPEED 1000.0f
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#define MANNED_PLASMAGUN_MAX_PITCH 50.0f
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#define MANNED_PLASMAGUN_BARREL_MAX_PITCH 30.0f
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float CObjectMannedPlasmagunMovement::GetMaxYaw() const
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{
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return MANNED_PLASMAGUN_AIMING_CONE_ANGLE;
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}
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float CObjectMannedPlasmagunMovement::GetMinYaw() const
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{
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return -MANNED_PLASMAGUN_AIMING_CONE_ANGLE;
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}
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float CObjectMannedPlasmagunMovement::GetMaxPitch() const
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{
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return MANNED_PLASMAGUN_MAX_PITCH;
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}
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void CObjectMannedPlasmagunMovement::ProcessMovement( CBasePlayer *pPlayer, CMoveData *pMove )
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{
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CTFMoveData *pMoveData = (CTFMoveData*)pMove;
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Assert( sizeof(MannedPlasmagunData_t) <= pMoveData->VehicleDataMaxSize() );
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MannedPlasmagunData_t *pVehicleData = (MannedPlasmagunData_t*)pMoveData->VehicleData();
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bool bSimple = (pVehicleData->m_nMoveStyle == MOVEMENT_STYLE_SIMPLE);
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CBaseTFVehicle *pVehicle = pVehicleData->m_pVehicle;
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// Flush caches since bone controllers might be wrong since they are not in the cache yet
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pVehicle->InvalidateBoneCache();
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// Get the view direction *in world coordinates*
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Vector vPlayerEye = pPlayer->EyePosition();
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QAngle angEyeAngles = pPlayer->LocalEyeAngles();
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Vector vPlayerForward;
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AngleVectors( angEyeAngles, &vPlayerForward, NULL, NULL );
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// Now figure out the pitch. This is done by casting a ray to see where the player's aiming reticle is pointing.
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// Then we do some trig to find out what angle the turret should point so it can see the target.
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// NOTE: this is done in the tank's local space so it works when the tank is banked.
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VMatrix mGunToWorld = SetupMatrixTranslation(pVehicle->GetAbsOrigin()) * SetupMatrixAngles(pVehicle->GetAbsAngles());
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VMatrix mWorldToGun = mGunToWorld.InverseTR();
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// First trace only on the world..
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Vector start = vPlayerEye;
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Vector end = start + vPlayerForward * 5000.0f;
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Vector vTarget;
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if ( bSimple )
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{
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vTarget = end;
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}
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else
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{
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trace_t trace;
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UTIL_TraceLine(start, end, MASK_SOLID_BRUSHONLY, pVehicle, COLLISION_GROUP_NONE, &trace);
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vTarget = trace.endpos;
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if(trace.fraction == 1)
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{
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// It didn't hit the world, so trace on ents.
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UTIL_TraceLine(start, end, MASK_PLAYERSOLID|MASK_NPCSOLID, pVehicle, COLLISION_GROUP_NONE, &trace);
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vTarget = trace.endpos;
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if(trace.fraction == 1)
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{
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// Didn't hit any ents.. just assume it's way out in front of the player's view.
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vTarget = end;
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}
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}
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}
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// Transform the world position into gun space.
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vTarget = mWorldToGun * vTarget;
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// Compute the position of the barrel pivot point as measured in the coordinate system of the gun
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Vector vTurretBase;
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QAngle vTurretBaseAngles;
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pVehicle->GetAttachment(pVehicleData->m_nBarrelPivotAttachment, vTurretBase, vTurretBaseAngles);
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vTurretBase = mWorldToGun * vTurretBase;
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// Make everything be relative to the pivot...
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vTarget -= vTurretBase;
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// Now we've got the target vector in local space. Now just figure out what
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// the gun angles need to be to hit the target.
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QAngle vWantedAngles;
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VectorAngles( vTarget, vWantedAngles );
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pVehicleData->m_flGunPitch = vWantedAngles[PITCH];
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pVehicleData->m_flGunYaw = vWantedAngles[YAW];
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// Place the player at the feet of the vehicle
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Vector vStandAngles;
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pVehicle->GetAttachmentLocal(pVehicleData->m_nStandAttachment, pMove->m_vecAbsOrigin, pMove->m_vecAngles);
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}
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