mirror of
https://github.com/ZDoom/qzdoom-gpl.git
synced 2024-12-13 05:30:54 +00:00
87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
|
#include "actor.h"
|
||
|
|
#include "info.h"
|
||
|
|
#include "m_random.h"
|
||
|
|
#include "p_local.h"
|
||
|
|
#include "p_enemy.h"
|
||
|
|
#include "s_sound.h"
|
||
|
|
#include "a_doomglobal.h"
|
||
|
|
#include "statnums.h"
|
||
|
|
#include "gstrings.h"
|
||
|
|
#include "a_action.h"
|
||
|
|
#include "thingdef/thingdef.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
- in the decorate definition define multiple drop items
|
||
|
|
- use the function GetDropItems to get the first drop item, then iterate over them and count how many dropitems are defined.
|
||
|
|
- with M_Random( ) % NUMBEROFDROPITEMS you get a random drop item number (let's call it n)
|
||
|
|
- use GetDropItems again to get the first drop item, then iterate to the n-th drop item
|
||
|
|
*/
|
||
|
|
static FRandom pr_randomspawn("RandomSpawn");
|
||
|
|
|
||
|
|
class ARandomSpawner : public AActor
|
||
|
|
{
|
||
|
|
DECLARE_STATELESS_ACTOR (ARandomSpawner, AActor)
|
||
|
|
|
||
|
|
void PostBeginPlay()
|
||
|
|
{
|
||
|
|
AActor *newmobj;
|
||
|
|
FDropItem *di; // di will be our drop item list iterator
|
||
|
|
FDropItem *drop; // while drop stays as the reference point.
|
||
|
|
int n=0;
|
||
|
|
|
||
|
|
Super::PostBeginPlay();
|
||
|
|
|
||
|
|
drop = di = GetDropItems(RUNTIME_TYPE(this));
|
||
|
|
// Always make sure it actually exists.
|
||
|
|
if (di != NULL)
|
||
|
|
{
|
||
|
|
// First, we get the size of the array...
|
||
|
|
while (di != NULL)
|
||
|
|
{
|
||
|
|
if (di->Name != NAME_None)
|
||
|
|
{
|
||
|
|
if (di->amount < 0) di->amount = 1; // default value is -1, we need a positive value.
|
||
|
|
n += di->amount; // this is how we can weight the list.
|
||
|
|
di = di->Next;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Then we reset the iterator to the start position...
|
||
|
|
di = drop;
|
||
|
|
// Take a random number...
|
||
|
|
n = pr_randomspawn(n);
|
||
|
|
// And iterate in the array up to the random number chosen.
|
||
|
|
while (n > 0)
|
||
|
|
{
|
||
|
|
if (di->Name != NAME_None)
|
||
|
|
{
|
||
|
|
n -= di->amount;
|
||
|
|
di = di->Next;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// So now we can spawn the dropped item.
|
||
|
|
if (pr_randomspawn() <= di->probability) // prob 255 = always spawn, prob 0 = never spawn.
|
||
|
|
{
|
||
|
|
newmobj = Spawn(di->Name, x, y, z, ALLOW_REPLACE);
|
||
|
|
// copy everything relevant
|
||
|
|
newmobj->SpawnAngle = newmobj->angle = angle;
|
||
|
|
newmobj->special = special;
|
||
|
|
newmobj->args[0] = args[0];
|
||
|
|
newmobj->args[1] = args[1];
|
||
|
|
newmobj->args[2] = args[2];
|
||
|
|
newmobj->args[3] = args[3];
|
||
|
|
newmobj->args[4] = args[4];
|
||
|
|
newmobj->SpawnFlags = SpawnFlags;
|
||
|
|
newmobj->HandleSpawnFlags();
|
||
|
|
newmobj->momx = momx;
|
||
|
|
newmobj->momy = momy;
|
||
|
|
newmobj->momz = momz;
|
||
|
|
newmobj->CopyFriendliness(this, false);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
IMPLEMENT_STATELESS_ACTOR (ARandomSpawner, Any, -1, 0)
|
||
|
|
END_DEFAULTS
|
||
|
|
|