ref: fe5d1976a0b4376c955ca8423eb9005f5d035403
dir: /sys/src/games/doom/p_mobj.h/
// Emacs style mode select -*- C++ -*- //----------------------------------------------------------------------------- // // $Id:$ // // Copyright (C) 1993-1996 by id Software, Inc. // // This source is available for distribution and/or modification // only under the terms of the DOOM Source Code License as // published by id Software. All rights reserved. // // The source is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License // for more details. // // DESCRIPTION: // Map Objects, MObj, definition and handling. // //----------------------------------------------------------------------------- #ifndef __P_MOBJ__ #define __P_MOBJ__ // Basics. #include "tables.h" #include "m_fixed.h" // We need the thinker_t stuff. #include "d_think.h" // We need the WAD data structure for Map things, // from the THINGS lump. #include "doomdata.h" // States are tied to finite states are // tied to animation frames. // Needs precompiled tables/data structures. #include "info.h" #ifdef __GNUG__ #pragma interface #endif // // NOTES: mobj_t // // mobj_ts are used to tell the refresh where to draw an image, // tell the world simulation when objects are contacted, // and tell the sound driver how to position a sound. // // The refresh uses the next and prev links to follow // lists of things in sectors as they are being drawn. // The sprite, frame, and angle elements determine which patch_t // is used to draw the sprite if it is visible. // The sprite and frame values are allmost allways set // from state_t structures. // The statescr.exe utility generates the states.h and states.c // files that contain the sprite/frame numbers from the // statescr.txt source file. // The xyz origin point represents a point at the bottom middle // of the sprite (between the feet of a biped). // This is the default origin position for patch_ts grabbed // with lumpy.exe. // A walking creature will have its z equal to the floor // it is standing on. // // The sound code uses the x,y, and subsector fields // to do stereo positioning of any sound effited by the mobj_t. // // The play simulation uses the blocklinks, x,y,z, radius, height // to determine when mobj_ts are touching each other, // touching lines in the map, or hit by trace lines (gunshots, // lines of sight, etc). // The mobj_t->flags element has various bit flags // used by the simulation. // // Every mobj_t is linked into a single sector // based on its origin coordinates. // The subsector_t is found with R_PointInSubsector(x,y), // and the sector_t can be found with subsector->sector. // The sector links are only used by the rendering code, // the play simulation does not care about them at all. // // Any mobj_t that needs to be acted upon by something else // in the play world (block movement, be shot, etc) will also // need to be linked into the blockmap. // If the thing has the MF_NOBLOCK flag set, it will not use // the block links. It can still interact with other things, // but only as the instigator (missiles will run into other // things, but nothing can run into a missile). // Each block in the grid is 128*128 units, and knows about // every line_t that it contains a piece of, and every // interactable mobj_t that has its origin contained. // // A valid mobj_t is a mobj_t that has the proper subsector_t // filled in for its xy coordinates and is linked into the // sector from which the subsector was made, or has the // MF_NOSECTOR flag set (the subsector_t needs to be valid // even if MF_NOSECTOR is set), and is linked into a blockmap // block or has the MF_NOBLOCKMAP flag set. // Links should only be modified by the P_[Un]SetThingPosition() // functions. // Do not change the MF_NO? flags while a thing is valid. // // Any questions? // // // Misc. mobj flags // typedef enum { // Call P_SpecialThing when touched. MF_SPECIAL = 1, // Blocks. MF_SOLID = 2, // Can be hit. MF_SHOOTABLE = 4, // Don't use the sector links (invisible but touchable). MF_NOSECTOR = 8, // Don't use the blocklinks (inert but displayable) MF_NOBLOCKMAP = 16, // Not to be activated by sound, deaf monster. MF_AMBUSH = 32, // Will try to attack right back. MF_JUSTHIT = 64, // Will take at least one step before attacking. MF_JUSTATTACKED = 128, // On level spawning (initial position), // hang from ceiling instead of stand on floor. MF_SPAWNCEILING = 256, // Don't apply gravity (every tic), // that is, object will float, keeping current height // or changing it actively. MF_NOGRAVITY = 512, // Movement flags. // This allows jumps from high places. MF_DROPOFF = 0x400, // For players, will pick up items. MF_PICKUP = 0x800, // Player cheat. ??? MF_NOCLIP = 0x1000, // Player: keep info about sliding along walls. MF_SLIDE = 0x2000, // Allow moves to any height, no gravity. // For active floaters, e.g. cacodemons, pain elementals. MF_FLOAT = 0x4000, // Don't cross lines // ??? or look at heights on teleport. MF_TELEPORT = 0x8000, // Don't hit same species, explode on block. // Player missiles as well as fireballs of various kinds. MF_MISSILE = 0x10000, // Dropped by a demon, not level spawned. // E.g. ammo clips dropped by dying former humans. MF_DROPPED = 0x20000, // Use fuzzy draw (shadow demons or spectres), // temporary player invisibility powerup. MF_SHADOW = 0x40000, // Flag: don't bleed when shot (use puff), // barrels and shootable furniture shall not bleed. MF_NOBLOOD = 0x80000, // Don't stop moving halfway off a step, // that is, have dead bodies slide down all the way. MF_CORPSE = 0x100000, // Floating to a height for a move, ??? // don't auto float to target's height. MF_INFLOAT = 0x200000, // On kill, count this enemy object // towards intermission kill total. // Happy gathering. MF_COUNTKILL = 0x400000, // On picking up, count this item object // towards intermission item total. MF_COUNTITEM = 0x800000, // Special handling: skull in flight. // Neither a cacodemon nor a missile. MF_SKULLFLY = 0x1000000, // Don't spawn this object // in death match mode (e.g. key cards). MF_NOTDMATCH = 0x2000000, // Player sprites in multiplayer modes are modified // using an internal color lookup table for re-indexing. // If 0x4 0x8 or 0xc, // use a translation table for player colormaps MF_TRANSLATION = 0xc000000, // Hmm ???. MF_TRANSSHIFT = 26 } mobjflag_t; // Map Object definition. typedef struct mobj_s { // List: thinker links. thinker_t thinker; // Info for drawing: position. fixed_t x; fixed_t y; fixed_t z; // More list: links in sector (if needed) struct mobj_s* snext; struct mobj_s* sprev; //More drawing info: to determine current sprite. angle_t angle; // orientation spritenum_t sprite; // used to find patch_t and flip value int frame; // might be ORed with FF_FULLBRIGHT // Interaction info, by BLOCKMAP. // Links in blocks (if needed). struct mobj_s* bnext; struct mobj_s* bprev; struct subsector_s* subsector; // The closest interval over all contacted Sectors. fixed_t floorz; fixed_t ceilingz; // For movement checking. fixed_t radius; fixed_t height; // Momentums, used to update position. fixed_t momx; fixed_t momy; fixed_t momz; // If == validcount, already checked. int validcount; mobjtype_t type; mobjinfo_t* info; // &mobjinfo[mobj->type] int tics; // state tic counter state_t* state; int flags; int health; // Movement direction, movement generation (zig-zagging). int movedir; // 0-7 int movecount; // when 0, select a new dir // Thing being chased/attacked (or NULL), // also the originator for missiles. struct mobj_s* target; // Reaction time: if non 0, don't attack yet. // Used by player to freeze a bit after teleporting. int reactiontime; // If >0, the target will be chased // no matter what (even if shot) int threshold; // Additional info record for player avatars only. // Only valid if type == MT_PLAYER struct player_s* player; // Player number last looked for. int lastlook; // For nightmare respawn. mapthing_t spawnpoint; // Thing being chased/attacked for tracers. struct mobj_s* tracer; } mobj_t; #endif //----------------------------------------------------------------------------- // // $Log:$ // //-----------------------------------------------------------------------------