IdentifyVersion Checks availability of IWAD files by name, to determine whether registered/commercial features should be executed (notably loading PWA

Toggle messages on/off

M_Init

Selected from DOOM menu

User wants to load this game

M_ReadFile

M_Responder

M_SaveDefaults

Selected from DOOM menu

M_ScreenShot

Find string height from hu_font chars

Restart a ceiling that's in-stasis

P_ArchivePlayers

Things to handle: T_MoveCeiling, (ceiling_t: sector_t * swizzle), - active list T_VerticalDoor, (vldoor_t: sector_t * swizzle), T_MoveFloor, (floormo

P_ArchiveThinkers

P_ArchiveWorld

P_BoxOnLineSide Considers the line to be infinite Returns side 0 or 1, -1 if box crosses the line.

P_CheckMissileRange

P_CrossBSPNode Returns true if strace crosses the given node successfully.

P_CrossSpecialLine - TRIGGER Called every time a thing origin is about to cross a line with a non 0 special.

P_DropWeapon Player died, so put the weapon away.

FIND HIGHEST CEILING IN THE SURROUNDING SECTORS

Return index into "slideFrames" array for which door type to use

P_GroupLines Builds sector line lists and subsector sector numbers. Finds block bounding boxes for sectors.

P_HitSlideLine Adjusts the xmove / ymove so that the next move will slide along the wall.

P_Init

P_InitSwitchList Only called at game initialization.

P_InterceptVector2 Returns the fractional intercept point along the first divline. This is only called by the addthings and addlines traversers.

KillMobj

P_LoadBlockMap

P_LoadLineDefs Also counts secret lines for intermissions.

P_LoadNodes

P_LoadSectors

P_LoadSegs

P_LoadSideDefs

P_LoadSubsectors

P_LoadThings

P_LoadVertexes

P_MakeDivline

P_MovePlayer

P_NightmareRespawn

P_NoiseAlert If a monster yells at a player, it will alert other monsters to the player.

P_PlayerInSpecialSector Called every tic frame that the player origin is in a special sector

P_PlayerThink

P_RespawnSpecials

P_RunThinkers

P_SetupLevel

P_SetupPsprites Called at start of level for each player.

P_ShootSpecialLine - IMPACT SPECIALS Called when a thing shoots a special line.

P_SlideMove The momx / momy move is bad, so try to slide along a wall. Find the first line hit, move flush to it, and slide along it This is a kludgy

P_SpawnBlood

Spawn a door that closes after 30 seconds

Spawn a door that opens after 5 minutes

P_SpawnFireFlicker

P_SpawnLightFlash After the map has been loaded, scan each sector for specials that spawn thinkers

P_SpawnMapThing The fields of the mapthing should already be in host byte order.

Parses command line parameters.

P_ThingHeightClip Takes a valid thing and adjusts the thing->floorz, thing->ceilingz, and possibly thing->z. This is called for all nearby monsters wh

P_TouchSpecialThing

P_TraverseIntercepts Returns true if the traverser function returns true for all lines.

P_UnArchivePlayers

P_UnArchiveSpecials

P_UnArchiveThinkers

P_UnArchiveWorld

P_UseLines Looks for special lines in front of the player to activate.

P_ZMovement

R_AddLine Clips the given segment and adds any visible pieces to the line list.

R_AddSprites During BSP traversal, this adds sprites by sector.

R_ClearClipSegs

R_ClearDrawSegs

R_ClearPlanes At begining of frame.

R_ClearSprites Called at frame start.

R_ClipPassWallSegment Clips the given range of columns, but does not includes it in the clip list. Does handle windows, e.g. LineDefs with upper and l

R_ClipSolidWallSegment Does handle solid walls, e.g. single sided LineDefs (middle texture) that entirely block the view.

R_DrawColumnInCache Clip and draw a column from a patch into a cached post.

R_DrawMasked