Initial Prey Game integration support.

2026-08-19 12:14:35 +02:00 · 2026-05-05 15:01:01 -07:00
parent a6c6f1ed26
commit 8d5f678b25
552 changed files with 265551 additions and 209 deletions
@@ -0,0 +1,91 @@
+// Copyright (C) 2004 Id Software, Inc.
+//
+
+#ifndef __PUSH_H__
+#define __PUSH_H__
+
+/*
+===============================================================================
+
+  Allows physics objects to be pushed geometrically.
+
+===============================================================================
+*/
+
+#define PUSHFL_ONLYMOVEABLE			1		// only push moveable entities
+#define PUSHFL_NOGROUNDENTITIES		2		// don't push entities the clip model rests upon
+#define PUSHFL_CLIP					4		// also clip against all non-moveable entities
+#define PUSHFL_CRUSH				8		// kill blocking entities
+#define PUSHFL_APPLYIMPULSE			16		// apply impulse to pushed entities
+// HUMANHEAD nla - Used to fix ragdolls colliding with movers when on them.
+#define PUSHFL_UNBLOCKABLE			128		// can not be blocked
+// HUMANHEAD END
+
+//#define NEW_PUSH
+
+class idPush {
+public:
+					// Try to push other entities by moving the given entity.
+					// If results.fraction < 1.0 the move was blocked by results.c.entityNum
+					// Returns total mass of all pushed entities.
+	float			ClipTranslationalPush( trace_t &results, idEntity *pusher, const int flags,
+											const idVec3 &newOrigin, const idVec3 &move );
+
+	float			ClipRotationalPush( trace_t &results, idEntity *pusher, const int flags,
+											const idMat3 &newAxis, const idRotation &rotation );
+
+	float			ClipPush( trace_t &results, idEntity *pusher, const int flags,
+											const idVec3 &oldOrigin, const idMat3 &oldAxis,
+												idVec3 &newOrigin, idMat3 &newAxis );
+
+					// initialize saving the positions of entities being pushed
+	void			InitSavingPushedEntityPositions( void );
+					// move all pushed entities back to their previous position
+	void			RestorePushedEntityPositions( void );
+					// returns the number of pushed entities
+	int				GetNumPushedEntities( void ) const { return numPushed; }
+					// get the ith pushed entity
+	idEntity *		GetPushedEntity( int i ) const { assert( i >= 0 && i < numPushed ); return pushed[i].ent; }
+
+private:
+	struct pushed_s {
+		idEntity *	ent;					// pushed entity
+		idAngles	deltaViewAngles;		// actor delta view angles
+	}				pushed[MAX_GENTITIES];	// pushed entities
+	int				numPushed;				// number of pushed entities
+
+	struct pushedGroup_s {
+		idEntity *	ent;
+		float		fraction;
+		bool		groundContact;
+		bool		test;
+	}				pushedGroup[MAX_GENTITIES];
+	int				pushedGroupSize;
+
+private:
+	void			SaveEntityPosition( idEntity *ent );
+	bool			RotateEntityToAxial( idEntity *ent, idVec3 rotationPoint );
+#ifdef NEW_PUSH
+	bool			CanPushEntity( idEntity *ent, idEntity *pusher, idEntity *initialPusher, const int flags );
+	void			AddEntityToPushedGroup( idEntity *ent, float fraction, bool groundContact );
+	bool			IsFullyPushed( idEntity *ent );
+	bool			ClipTranslationAgainstPusher( trace_t &results, idEntity *ent, idEntity *pusher, const idVec3 &translation );
+	int				GetPushableEntitiesForTranslation( idEntity *pusher, idEntity *initialPusher, const int flags,
+											const idVec3 &translation, idEntity *entityList[], int maxEntities );
+	bool			ClipRotationAgainstPusher( trace_t &results, idEntity *ent, idEntity *pusher, const idRotation &rotation );
+	int				GetPushableEntitiesForRotation( idEntity *pusher, idEntity *initialPusher, const int flags,
+											const idRotation &rotation, idEntity *entityList[], int maxEntities );
+#else
+	void			ClipEntityRotation( trace_t &trace, const idEntity *ent, const idClipModel *clipModel,
+										idClipModel *skip, const idRotation &rotation );
+	void			ClipEntityTranslation( trace_t &trace, const idEntity *ent, const idClipModel *clipModel,
+										idClipModel *skip, const idVec3 &translation );
+	int				TryTranslatePushEntity( trace_t &results, idEntity *check, idClipModel *clipModel, const int flags,
+												const idVec3 &newOrigin, const idVec3 &move );
+	int				TryRotatePushEntity( trace_t &results, idEntity *check, idClipModel *clipModel, const int flags,
+												const idMat3 &newAxis, const idRotation &rotation );
+	int				DiscardEntities( idEntity *entityList[], int numEntities, int flags, idEntity *pusher );
+#endif
+};
+
+#endif /* !__PUSH_H__ */