Htflags

A per-actor property, this controls special flags for sprites.

htflags is a bitfield, so add together the values you want and then set htflags to the sum.

Flags

The following values are used with gameflags, htflags and spriteflags.

Exposed	Value	Hex	Label	Description
Yes	1	0x00000001	SFLAG_SHADOW	Generates a shadow. See spriteshadow.
Yes	2	0x00000002	SFLAG_NVG	Turns palette 6 whenever night vision goggles are used. See spritenvg.
Yes	4	0x00000004	SFLAG_NOSHADE	The sprite's shade is unaffected by the shade of its sector. See spritenoshade.
No	8	0x00000008	SFLAG_PROJECTILE	Has been defined with defineprojectile.
No	16	0x00000010	SFLAG_DECAL	Prevents teleporting. The sprite is not entered into the decal deletion queue.
Yes	32	0x00000020	SFLAG_BADGUY	Is an enemy. See useractor.
Yes	64	0x00000040	SFLAG_NOPAL	Sprite will be insusceptible to floor palette of sector containing this sprite. See spritenopal.
Yes	128	0x00000080	SFLAG_NOEVENTS	Sprite will not be run through EVENT_GAME or EVENT_PREGAME.
Yes	256	0x00000100	SFLAG_NOLIGHT	Sprite will not emit hardcoded Polymer-based lights.
Yes	512	0x00000200	SFLAG_USEACTIVATOR
Internal	1024	0x00000400	SFLAG_NULL	Null sprite in multiplayer [internal, do not use]
Yes	2048	0x00000800	SFLAG_NOCLIP	Sprite will call "clipmove()" with a clipmask of 0, skipping collision detection with other sprites to increase performance. (Specifically, to prevent runtime behavior that is quadratic with the number of sprites.) Useful for particle effects.
No	4096	0x00001000	SFLAG_NOFLOORSHADOW
Yes	8192	0x00002000	SFLAG_SMOOTHMOVE
Yes	16384	0x00004000	SFLAG_NOTELEPORT
No	32768	0x00008000	SFLAG_BADGUYSTAYPUT	Actor will stay inside its original sector..
No	65536	0x00010000	SFLAG_CACHE
No	131072	0x00020000	SFLAG_ROTFIXED	rotation-fixed with respect to a pivot point to prevent position diverging due to roundoff error accumulation.
No	262144	0x00040000	SFLAG_HARDCODED_BADGUY
No	524288	0x00080000	SFLAG_DIDNOSE7WATER	Used temporarily.
Yes	1048576	0x00100000	SFLAG_NODAMAGEPUSH	Actor should not be pushed back when damaged (by default TANK, RECON, ROTATEGUN, and the bosses).
Yes	2097152	0x00200000	SFLAG_NOWATERDIP	Actor will not appear to sink into the floor in sectors tagged Above Water (lotag 1).
Yes	4194304	0x00400000	SFLAG_HURTSPAWNBLOOD	Actor will spawn blood as hardcoded enemies do when hurt.
Yes	8388608	0x00800000	SFLAG_GREENSLIMEFOOD	Actor can be eaten by GREENSLIME actor (Protozoid Slimer). Can only be set outside of actor and event code whereupon it is applied to all sprites of the same picnum.
Yes	16777216	0x01000000	SFLAG_REALCLIPDIST	Actor will always use its set clipdist instead of one potentially overridden in hardcoded circumstances based on its xrepeat and picnum.
Yes	33554432	0x02000000	SFLAG_WAKEUPBADGUYS	When awoken (changed to an active actor), any sprite with this flag set will wake up any enemy with which it has a line of sight.
Yes	67108864	0x04000000	SFLAG_DAMAGEEVENT	Actor fires EVENT_(POST)DAMAGESPRITE when damaged.
Yes	134217728	0x08000000	SFLAG_NOWATERSECTOR	Will prevent a sprite from moving into water.
Yes	268435456	0x10000000	SFLAG_QUEUEDFORDELETE

Defines

define SFLAG_SHADOW 0x00000001 define SFLAG_NVG 0x00000002 define SFLAG_NOSHADE 0x00000004 define SFLAG_PROJECTILE 0x00000008 define SFLAG_DECAL 0x00000010 define SFLAG_NULL 0x00000400 define SFLAG_NOFLOORSHADOW 0x00001000 define SFLAG_BADGUYSTAYPUT 0x00008000 define SFLAG_CACHE 0x00010000 define SFLAG_ROTFIXED 0x00020000 define SFLAG_HARDCODED_BADGUY 0x00040000 define SFLAG_DIDNOSE7WATER 0x00080000 define SFLAG_HURTSPAWNBLOOD 0x00400000 define SFLAG_GREENSLIMEFOOD 0x00800000 define SFLAG_WAKEUPBADGUYS 0x02000000 define SFLAG_DAMAGEEVENT 0x04000000