Initial Prey Game integration support.

2026-08-20 04:30:12 +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 +1,165 @@
+// Copyright (C) 2004 Id Software, Inc.
+//
+
+#ifndef __GAME_IK_H__
+#define __GAME_IK_H__
+
+/*
+===============================================================================
+
+  IK base class with a simple fast two bone solver.
+
+===============================================================================
+*/
+
+#define IK_ANIM				"ik_pose"
+
+class idIK {
+public:
+							idIK( void );
+	virtual					~idIK( void );
+
+	void					Save( idSaveGame *savefile ) const;
+	void					Restore( idRestoreGame *savefile );
+
+	bool					IsInitialized( void ) const;
+
+	virtual bool			Init( idEntity *self, const char *anim, const idVec3 &modelOffset );
+	virtual void			Evaluate( void );
+	virtual void			ClearJointMods( void );
+
+	bool					SolveTwoBones( const idVec3 &startPos, const idVec3 &endPos, const idVec3 &dir, float len0, float len1, idVec3 &jointPos );
+	float					GetBoneAxis( const idVec3 &startPos, const idVec3 &endPos, const idVec3 &dir, idMat3 &axis );
+
+protected:
+	bool					initialized;
+	bool					ik_activate;
+	idEntity *				self;				// entity using the animated model
+	idAnimator *			animator;			// animator on entity
+	int						modifiedAnim;		// animation modified by the IK
+	idVec3					modelOffset;
+	// HUMANHEAD nla - Fixes IK big with changing normals
+	idVec3					normalPrev;
+	// HUMANHEAD END
+};
+
+
+/*
+===============================================================================
+
+  IK controller for a walking character with an arbitrary number of legs.	
+
+===============================================================================
+*/
+
+class idIK_Walk : public idIK {
+public:
+
+							idIK_Walk( void );
+	virtual					~idIK_Walk( void );
+
+	void					Save( idSaveGame *savefile ) const;
+	void					Restore( idRestoreGame *savefile );
+
+	virtual bool			Init( idEntity *self, const char *anim, const idVec3 &modelOffset );
+	virtual void			Evaluate( void );
+	virtual void			ClearJointMods( void );
+
+	void					EnableAll( void );
+	void					DisableAll( void );
+	void					EnableLeg( int num );
+	void					DisableLeg( int num );
+
+	void					InvalidateHeights(void) { oldHeightsValid = false; } //HUMANHEAD rww
+
+	virtual bool			IsActivated() { return ( enabledLegs != 0 ) ? true : false; } //HUMANHEAD jsh
+private:
+	static const int		MAX_LEGS		= 8;
+
+	idClipModel *			footModel;
+
+	int						numLegs;
+	int						enabledLegs;
+	jointHandle_t			footJoints[MAX_LEGS];
+	jointHandle_t			ankleJoints[MAX_LEGS];
+	jointHandle_t			kneeJoints[MAX_LEGS];
+	jointHandle_t			hipJoints[MAX_LEGS];
+	jointHandle_t			dirJoints[MAX_LEGS];
+	jointHandle_t			waistJoint;
+
+	idVec3					hipForward[MAX_LEGS];
+	idVec3					kneeForward[MAX_LEGS];
+
+	float					upperLegLength[MAX_LEGS];
+	float					lowerLegLength[MAX_LEGS];
+
+	idMat3					upperLegToHipJoint[MAX_LEGS];
+	idMat3					lowerLegToKneeJoint[MAX_LEGS];
+
+	float					smoothing;
+	float					waistSmoothing;
+	float					footShift;
+	float					waistShift;
+	float					minWaistFloorDist;
+	float					minWaistAnkleDist;
+	float					footUpTrace;
+	float					footDownTrace;
+	bool					tiltWaist;
+	bool					usePivot;
+
+	// state
+	int						pivotFoot;
+	float					pivotYaw;
+	idVec3					pivotPos;
+	bool					oldHeightsValid;
+	float					oldWaistHeight;
+	float					oldAnkleHeights[MAX_LEGS];
+	idVec3					waistOffset;
+
+	int						lastFrame; // HUMANHEAD mdl:  Last frame Evaluate() was called
+};
+
+
+/*
+===============================================================================
+
+  IK controller for reaching a position with an arm or leg.
+
+===============================================================================
+*/
+
+class idIK_Reach : public idIK {
+public:
+
+							idIK_Reach( void );
+	virtual					~idIK_Reach( void );
+
+	void					Save( idSaveGame *savefile ) const;
+	void					Restore( idRestoreGame *savefile );
+
+	virtual bool			Init( idEntity *self, const char *anim, const idVec3 &modelOffset );
+	virtual void			Evaluate( void );
+	virtual void			ClearJointMods( void );
+
+private:
+
+	static const int		MAX_ARMS	= 2;
+
+	int						numArms;
+	int						enabledArms;
+	jointHandle_t			handJoints[MAX_ARMS];
+	jointHandle_t			elbowJoints[MAX_ARMS];
+	jointHandle_t			shoulderJoints[MAX_ARMS];
+	jointHandle_t			dirJoints[MAX_ARMS];
+
+	idVec3					shoulderForward[MAX_ARMS];
+	idVec3					elbowForward[MAX_ARMS];
+
+	float					upperArmLength[MAX_ARMS];
+	float					lowerArmLength[MAX_ARMS];
+
+	idMat3					upperArmToShoulderJoint[MAX_ARMS];
+	idMat3					lowerArmToElbowJoint[MAX_ARMS];
+};
+
+#endif /* !__GAME_IK_H__ */