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game/server/physics_impact_damage.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#ifndef PHYSICS_IMPACT_DAMAGE_H
+#define PHYSICS_IMPACT_DAMAGE_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+struct impactentry_t
+{
+	float	impulse;
+	float	damage;
+};
+
+// UNDONE: Add a flag to turn off aggregation of mass in object systems (e.g. ragdolls, vehicles)?
+struct impactdamagetable_t
+{
+	impactentry_t	*linearTable;
+	impactentry_t	*angularTable;
+	int			linearCount;	// array size of linearTable
+	int			angularCount;	// array size of angularTable
+
+	float		minSpeedSqr;	// minimum squared impact speed for damage
+	float		minRotSpeedSqr;
+	float		minMass;		// minimum mass to do damage
+
+	// filter out reall small objects, set all to zero to disable
+	float		smallMassMax;
+	float		smallMassCap;
+	float		smallMassMinSpeedSqr;
+
+	// exaggerate the effects of really large objects, set all to 1 to disable
+	float		largeMassMin;
+	float		largeMassScale;
+	float		largeMassFallingScale;	// emphasize downward impacts so that this will kill instead of stress (we have more information here than there)
+	float		myMinVelocity;			// filter out any energy lost by me unless my velocity is greater than this
+};
+
+
+
+extern impactdamagetable_t gDefaultNPCImpactDamageTable;
+extern impactdamagetable_t gDefaultPlayerImpactDamageTable;
+extern impactdamagetable_t gDefaultPlayerVehicleImpactDamageTable;
+
+// NOTE Default uses default NPC table
+float CalculateDefaultPhysicsDamage( int index, gamevcollisionevent_t *pEvent, float energyScale, bool allowStaticDamage, int &damageTypeOut, string_t iszDamageTableName = NULL_STRING, bool bDamageFromHeldObjects = false );
+
+// use passes in the table
+float CalculatePhysicsImpactDamage( int index, gamevcollisionevent_t *pEvent, const impactdamagetable_t &table, float energyScale, bool allowStaticDamage, int &damageTypeOut, bool bDamageFromHeldObjects = false );
+
+struct vphysics_objectstress_t
+{
+	float		exertedStress;
+	float		receivedStress;
+	bool		hasNonStaticStress;
+	bool		hasLargeObjectContact;
+};
+
+float CalculateObjectStress( IPhysicsObject *pObject, CBaseEntity *pOwnerEntity, vphysics_objectstress_t *pOutput );
+
+#endif // PHYSICS_IMPACT_DAMAGE_H