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gzdoom/src/info.cpp
Randy Heit b2ccd0bd28 Use action function return value to make state jumps happen 
- The A_Jump family of action functions now return the state to jump
  to (NULL if no jump is to be taken) instead of jumping directly.
  It is the caller's responsibility to handle the jump. This will
  make it possible to use their results in if statements and
  do something other than jump.
- DECORATE return statements can now return the result of a function
  (but not any random expression--it must be a function call). To
  make a jump happen from inside a multi-action block, you must
  return the value of an A_Jump function. e.g.:
    { return A_Jump(128, "SomeState"); }
- The VMFunction class now contains its prototype instead of storing
  it at a higher level in PFunction. This is so that
  FState::CallAction can easily tell if a function returns a state.
- Removed the FxTailable class because with explicit return
  statements, it's not useful anymore.
2016-02-18 20:39:40 -06:00

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/*
** info.cpp
** Keeps track of available actors and their states
**
**---------------------------------------------------------------------------
** Copyright 1998-2006 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
** This is completely different from Doom's info.c.
**
*/
#include "doomstat.h"
#include "info.h"
#include "m_fixed.h"
#include "c_dispatch.h"
#include "d_net.h"
#include "v_text.h"
#include "gi.h"
#include "vm.h"
#include "actor.h"
#include "r_state.h"
#include "i_system.h"
#include "p_local.h"
#include "templates.h"
#include "cmdlib.h"
#include "g_level.h"
#include "stats.h"
#include "thingdef/thingdef.h"
#include "d_player.h"
extern void LoadActors ();
extern void InitBotStuff();
extern void ClearStrifeTypes();
TArray<PClassActor *> PClassActor::AllActorClasses;
FRandom FState::pr_statetics("StateTics");
cycle_t ActionCycles;
void FState::SetAction(const char *name)
{
ActionFunc = FindGlobalActionFunction(name)->Variants[0].Implementation;
}
bool FState::CallAction(AActor *self, AActor *stateowner, FState **stateret)
{
if (ActionFunc != NULL)
{
ActionCycles.Clock();
static VMFrameStack stack;
VMValue params[3] = { self, stateowner, VMValue(this, ATAG_STATE) };
// If the function returns a state, store it at *stateret.
// If it doesn't return a state but stateret is non-NULL, we need
// to set *stateret to NULL.
if (stateret != NULL)
{
*stateret = NULL;
if (ActionFunc->Proto == NULL ||
ActionFunc->Proto->ReturnTypes.Size() == 0 ||
ActionFunc->Proto->ReturnTypes[0] != TypeState)
{
stateret = NULL;
}
}
if (stateret == NULL)
{
stack.Call(ActionFunc, params, countof(params), NULL, 0, NULL);
}
else
{
VMReturn ret;
ret.PointerAt((void **)stateret);
stack.Call(ActionFunc, params, countof(params), &ret, 1, NULL);
}
ActionCycles.Unclock();
return true;
}
else
{
return false;
}
}
//==========================================================================
//
//
//==========================================================================
int GetSpriteIndex(const char * spritename, bool add)
{
static char lastsprite[5];
static int lastindex;
// Make sure that the string is upper case and 4 characters long
char upper[5]={0,0,0,0,0};
for (int i = 0; spritename[i] != 0 && i < 4; i++)
{
upper[i] = toupper (spritename[i]);
}
// cache the name so if the next one is the same the function doesn't have to perform a search.
if (!strcmp(upper, lastsprite))
{
return lastindex;
}
strcpy(lastsprite, upper);
for (unsigned i = 0; i < sprites.Size (); ++i)
{
if (strcmp (sprites[i].name, upper) == 0)
{
return (lastindex = (int)i);
}
}
if (!add)
{
return (lastindex = -1);
}
spritedef_t temp;
strcpy (temp.name, upper);
temp.numframes = 0;
temp.spriteframes = 0;
return (lastindex = (int)sprites.Push (temp));
}
IMPLEMENT_POINTY_CLASS(PClassActor)
DECLARE_POINTER(DropItems)
END_POINTERS
//==========================================================================
//
// PClassActor :: StaticInit STATIC
//
//==========================================================================
void PClassActor::StaticInit()
{
sprites.Clear();
if (sprites.Size() == 0)
{
spritedef_t temp;
// Sprite 0 is always TNT1
memcpy (temp.name, "TNT1", 5);
temp.numframes = 0;
temp.spriteframes = 0;
sprites.Push (temp);
// Sprite 1 is always ----
memcpy (temp.name, "----", 5);
sprites.Push (temp);
// Sprite 2 is always ####
memcpy (temp.name, "####", 5);
sprites.Push (temp);
}
if (!batchrun) Printf ("LoadActors: Load actor definitions.\n");
ClearStrifeTypes();
LoadActors ();
InitBotStuff();
}
//==========================================================================
//
// PClassActor :: StaticSetActorNums STATIC
//
// Called after Dehacked patches are applied
//
//==========================================================================
void PClassActor::StaticSetActorNums()
{
for (unsigned int i = 0; i < PClassActor::AllActorClasses.Size(); ++i)
{
static_cast<PClassActor *>(PClassActor::AllActorClasses[i])->RegisterIDs();
}
}
//==========================================================================
//
// PClassActor Constructor
//
//==========================================================================
PClassActor::PClassActor()
{
GameFilter = GAME_Any;
SpawnID = 0;
DoomEdNum = -1;
OwnedStates = NULL;
NumOwnedStates = 0;
Replacement = NULL;
Replacee = NULL;
StateList = NULL;
DamageFactors = NULL;
PainChances = NULL;
DeathHeight = -1;
BurnHeight = -1;
GibHealth = INT_MIN;
WoundHealth = 6;
PoisonDamage = 0;
FastSpeed = FIXED_MIN;
RDFactor = FRACUNIT;
CameraHeight = FIXED_MIN;
DropItems = NULL;
DontHurtShooter = false;
ExplosionRadius = -1;
MeleeDamage = 0;
// Record this in the master list.
AllActorClasses.Push(this);
}
//==========================================================================
//
// PClassActor Destructor
//
//==========================================================================
PClassActor::~PClassActor()
{
if (OwnedStates != NULL)
{
delete[] OwnedStates;
}
if (DamageFactors != NULL)
{
delete DamageFactors;
}
if (PainChances != NULL)
{
delete PainChances;
}
if (StateList != NULL)
{
StateList->Destroy();
M_Free(StateList);
}
}
//==========================================================================
//
// PClassActor :: Derive
//
//==========================================================================
void PClassActor::DeriveData(PClass *newclass)
{
assert(newclass->IsKindOf(RUNTIME_CLASS(PClassActor)));
PClassActor *newa = static_cast<PClassActor *>(newclass);
newa->Obituary = Obituary;
newa->HitObituary = HitObituary;
newa->DeathHeight = DeathHeight;
newa->BurnHeight = BurnHeight;
newa->BloodColor = BloodColor;
newa->GibHealth = GibHealth;
newa->WoundHealth = WoundHealth;
newa->PoisonDamage = PoisonDamage;
newa->FastSpeed = FastSpeed;
newa->RDFactor = RDFactor;
newa->CameraHeight = CameraHeight;
newa->HowlSound = HowlSound;
newa->BloodType = BloodType;
newa->BloodType2 = BloodType2;
newa->BloodType3 = BloodType3;
newa->DropItems = DropItems;
newa->DontHurtShooter = DontHurtShooter;
newa->ExplosionRadius = ExplosionRadius;
newa->ExplosionDamage = ExplosionDamage;
newa->MeleeDamage = MeleeDamage;
newa->MeleeSound = MeleeSound;
newa->MissileName = MissileName;
newa->MissileHeight = MissileHeight;
newa->VisibleToPlayerClass = VisibleToPlayerClass;
if (DamageFactors != NULL)
{
// copy damage factors from parent
newa->DamageFactors = new DmgFactors;
*newa->DamageFactors = *DamageFactors;
}
if (PainChances != NULL)
{
// copy pain chances from parent
newa->PainChances = new PainChanceList;
*newa->PainChances = *PainChances;
}
}
//==========================================================================
//
// PClassActor :: PropagateMark
//
//==========================================================================
size_t PClassActor::PropagateMark()
{
// Mark state functions
for (int i = 0; i < NumOwnedStates; ++i)
{
if (OwnedStates[i].ActionFunc != NULL)
{
GC::Mark(OwnedStates[i].ActionFunc);
}
}
// Mark damage function
if (Defaults != NULL)
{
GC::Mark(((AActor *)Defaults)->Damage);
}
// marked += ActorInfo->NumOwnedStates * sizeof(FState);
return Super::PropagateMark();
}
//==========================================================================
//
// PClassActor :: InitializeNativeDefaults
//
// This is used by DECORATE to assign ActorInfos to internal classes
//
//==========================================================================
void PClassActor::InitializeNativeDefaults()
{
Symbols.SetParentTable(&ParentClass->Symbols);
assert(Defaults == NULL);
Defaults = (BYTE *)M_Malloc(Size);
if (ParentClass->Defaults != NULL)
{
memcpy(Defaults, ParentClass->Defaults, ParentClass->Size);
if (Size > ParentClass->Size)
{
memset(Defaults + ParentClass->Size, 0, Size - ParentClass->Size);
}
}
else
{
memset (Defaults, 0, Size);
}
}
//==========================================================================
//
// PClassActor :: RegisterIDs
//
// Registers this class's SpawnID and DoomEdNum in the appropriate tables.
//
//==========================================================================
void PClassActor::RegisterIDs()
{
PClassActor *cls = PClass::FindActor(TypeName);
if (cls == NULL)
{
Printf(TEXTCOLOR_RED"The actor '%s' has been hidden by a non-actor of the same name\n", TypeName.GetChars());
return;
}
// Conversation IDs have never been filtered by game so we cannot start doing that.
if (ConversationID > 0)
{
StrifeTypes[ConversationID] = cls;
if (cls != this)
{
Printf(TEXTCOLOR_RED"Conversation ID %d refers to hidden class type '%s'\n", SpawnID, cls->TypeName.GetChars());
}
}
if (GameFilter == GAME_Any || (GameFilter & gameinfo.gametype))
{
if (SpawnID > 0)
{
SpawnableThings[SpawnID] = cls;
if (cls != this)
{
Printf(TEXTCOLOR_RED"Spawn ID %d refers to hidden class type '%s'\n", SpawnID, cls->TypeName.GetChars());
}
}
if (DoomEdNum != -1)
{
FDoomEdEntry *oldent = DoomEdMap.CheckKey(DoomEdNum);
if (oldent != NULL && oldent->Special == -2)
{
Printf(TEXTCOLOR_RED"Editor number %d defined twice for classes '%s' and '%s'\n", DoomEdNum, cls->TypeName.GetChars(), oldent->Type->TypeName.GetChars());
}
FDoomEdEntry ent;
memset(&ent, 0, sizeof(ent));
ent.Type = cls;
ent.Special = -2; // use -2 instead of -1 so that we can recognize DECORATE defined entries and print a warning message if duplicates occur.
DoomEdMap.Insert(DoomEdNum, ent);
if (cls != this)
{
Printf(TEXTCOLOR_RED"Editor number %d refers to hidden class type '%s'\n", DoomEdNum, cls->TypeName.GetChars());
}
}
}
}
//==========================================================================
//
// PClassActor :: GetReplacement
//
//==========================================================================
PClassActor *PClassActor::GetReplacement(bool lookskill)
{
FName skillrepname;
if (lookskill && AllSkills.Size() > (unsigned)gameskill)
{
skillrepname = AllSkills[gameskill].GetReplacement(TypeName);
if (skillrepname != NAME_None && PClass::FindClass(skillrepname) == NULL)
{
Printf("Warning: incorrect actor name in definition of skill %s: \n"
"class %s is replaced by non-existent class %s\n"
"Skill replacement will be ignored for this actor.\n",
AllSkills[gameskill].Name.GetChars(),
TypeName.GetChars(), skillrepname.GetChars());
AllSkills[gameskill].SetReplacement(TypeName, NAME_None);
AllSkills[gameskill].SetReplacedBy(skillrepname, NAME_None);
lookskill = false; skillrepname = NAME_None;
}
}
if (Replacement == NULL && (!lookskill || skillrepname == NAME_None))
{
return this;
}
// The Replacement field is temporarily NULLed to prevent
// potential infinite recursion.
PClassActor *savedrep = Replacement;
Replacement = NULL;
PClassActor *rep = savedrep;
// Handle skill-based replacement here. It has precedence on DECORATE replacement
// in that the skill replacement is applied first, followed by DECORATE replacement
// on the actor indicated by the skill replacement.
if (lookskill && (skillrepname != NAME_None))
{
rep = PClass::FindActor(skillrepname);
}
// Now handle DECORATE replacement chain
// Skill replacements are not recursive, contrarily to DECORATE replacements
rep = rep->GetReplacement(false);
// Reset the temporarily NULLed field
Replacement = savedrep;
return rep;
}
//==========================================================================
//
// PClassActor :: GetReplacee
//
//==========================================================================
PClassActor *PClassActor::GetReplacee(bool lookskill)
{
FName skillrepname;
if (lookskill && AllSkills.Size() > (unsigned)gameskill)
{
skillrepname = AllSkills[gameskill].GetReplacedBy(TypeName);
if (skillrepname != NAME_None && PClass::FindClass(skillrepname) == NULL)
{
Printf("Warning: incorrect actor name in definition of skill %s: \n"
"non-existent class %s is replaced by class %s\n"
"Skill replacement will be ignored for this actor.\n",
AllSkills[gameskill].Name.GetChars(),
skillrepname.GetChars(), TypeName.GetChars());
AllSkills[gameskill].SetReplacedBy(TypeName, NAME_None);
AllSkills[gameskill].SetReplacement(skillrepname, NAME_None);
lookskill = false;
}
}
if (Replacee == NULL && (!lookskill || skillrepname == NAME_None))
{
return this;
}
// The Replacee field is temporarily NULLed to prevent
// potential infinite recursion.
PClassActor *savedrep = Replacee;
Replacee = NULL;
PClassActor *rep = savedrep;
if (lookskill && (skillrepname != NAME_None) && (PClass::FindClass(skillrepname) != NULL))
{
rep = PClass::FindActor(skillrepname);
}
rep = rep->GetReplacee(false);
Replacee = savedrep;
return rep;
}
//==========================================================================
//
// PClassActor :: SetDamageFactor
//
//==========================================================================
void PClassActor::SetDamageFactor(FName type, fixed_t factor)
{
if (DamageFactors == NULL)
{
DamageFactors = new DmgFactors;
}
DamageFactors->Insert(type, factor);
}
//==========================================================================
//
// PClassActor :: SetPainChance
//
//==========================================================================
void PClassActor::SetPainChance(FName type, int chance)
{
if (chance >= 0)
{
if (PainChances == NULL)
{
PainChances = new PainChanceList;
}
PainChances->Insert(type, MIN(chance, 256));
}
else if (PainChances != NULL)
{
PainChances->Remove(type);
}
}
//==========================================================================
//
// PClassActor :: ReplaceClassRef
//
//==========================================================================
void PClassActor::ReplaceClassRef(PClass *oldclass, PClass *newclass)
{
for (unsigned i = 0; i < VisibleToPlayerClass.Size(); i++)
{
if (VisibleToPlayerClass[i] == oldclass)
VisibleToPlayerClass[i] = static_cast<PClassPlayerPawn*>(newclass);
}
AActor *def = (AActor*)Defaults;
if (def != NULL)
{
if (def->TeleFogSourceType == oldclass) def->TeleFogSourceType = static_cast<PClassActor *>(newclass);
if (def->TeleFogDestType == oldclass) def->TeleFogDestType = static_cast<PClassActor *>(newclass);
}
}
//==========================================================================
//
// DmgFactors :: CheckFactor
//
// Checks for the existance of a certain damage type. If that type does not
// exist, the damage factor for type 'None' will be returned, if present.
//
//==========================================================================
fixed_t *DmgFactors::CheckFactor(FName type)
{
fixed_t *pdf = CheckKey(type);
if (pdf == NULL && type != NAME_None)
{
pdf = CheckKey(NAME_None);
}
return pdf;
}
static void SummonActor (int command, int command2, FCommandLine argv)
{
if (CheckCheatmode ())
return;
if (argv.argc() > 1)
{
PClassActor *type = PClass::FindActor(argv[1]);
if (type == NULL)
{
Printf ("Unknown actor '%s'\n", argv[1]);
return;
}
Net_WriteByte (argv.argc() > 2 ? command2 : command);
Net_WriteString (type->TypeName.GetChars());
if (argv.argc () > 2)
{
Net_WriteWord (atoi (argv[2])); // angle
Net_WriteWord ((argv.argc() > 3) ? atoi(argv[3]) : 0); // TID
Net_WriteByte ((argv.argc() > 4) ? atoi(argv[4]) : 0); // special
for (int i = 5; i < 10; i++)
{ // args[5]
Net_WriteLong((i < argv.argc()) ? atoi(argv[i]) : 0);
}
}
}
}
CCMD (summon)
{
SummonActor (DEM_SUMMON, DEM_SUMMON2, argv);
}
CCMD (summonfriend)
{
SummonActor (DEM_SUMMONFRIEND, DEM_SUMMONFRIEND2, argv);
}
CCMD (summonmbf)
{
SummonActor (DEM_SUMMONMBF, DEM_SUMMONFRIEND2, argv);
}
CCMD (summonfoe)
{
SummonActor (DEM_SUMMONFOE, DEM_SUMMONFOE2, argv);
}
// Damage type defaults / global settings
TMap<FName, DamageTypeDefinition> GlobalDamageDefinitions;
void DamageTypeDefinition::Apply(FName type)
{
GlobalDamageDefinitions[type] = *this;
}
DamageTypeDefinition *DamageTypeDefinition::Get(FName type)
{
return GlobalDamageDefinitions.CheckKey(type);
}
bool DamageTypeDefinition::IgnoreArmor(FName type)
{
DamageTypeDefinition *dtd = Get(type);
if (dtd) return dtd->NoArmor;
return false;
}
//==========================================================================
//
// DamageTypeDefinition :: ApplyMobjDamageFactor
//
// Calculates mobj damage based on original damage, defined damage factors
// and damage type.
//
// If the specific damage type is not defined, the damage factor for
// type 'None' will be used (with 1.0 as a default value).
//
// Globally declared damage types may override or multiply the damage
// factor when 'None' is used as a fallback in this function.
//
//==========================================================================
int DamageTypeDefinition::ApplyMobjDamageFactor(int damage, FName type, DmgFactors const * const factors)
{
if (factors)
{
// If the actor has named damage factors, look for a specific factor
fixed_t const *pdf = factors->CheckKey(type);
if (pdf) return FixedMul(damage, *pdf); // type specific damage type
// If this was nonspecific damage, don't fall back to nonspecific search
if (type == NAME_None) return damage;
}
// If this was nonspecific damage, don't fall back to nonspecific search
else if (type == NAME_None)
{
return damage;
}
else
{
// Normal is unsupplied / 1.0, so there's no difference between modifying and overriding
DamageTypeDefinition *dtd = Get(type);
return dtd ? FixedMul(damage, dtd->DefaultFactor) : damage;
}
{
fixed_t const *pdf = factors->CheckKey(NAME_None);
DamageTypeDefinition *dtd = Get(type);
// Here we are looking for modifications to untyped damage
// If the calling actor defines untyped damage factor, that is contained in "pdf".
if (pdf) // normal damage available
{
if (dtd)
{
if (dtd->ReplaceFactor) return FixedMul(damage, dtd->DefaultFactor); // use default instead of untyped factor
return FixedMul(damage, FixedMul(*pdf, dtd->DefaultFactor)); // use default as modification of untyped factor
}
return FixedMul(damage, *pdf); // there was no default, so actor default is used
}
else if (dtd)
{
return FixedMul(damage, dtd->DefaultFactor); // implicit untyped factor 1.0 does not need to be applied/replaced explicitly
}
}
return damage;
}
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