gzdoom-gles/src/g_hexen/a_bats.cpp

89 lines
2.2 KiB
C++

/*
#include "actor.h"
#include "info.h"
#include "m_random.h"
#include "p_local.h"
#include "s_sound.h"
#include "thingdef/thingdef.h"
*/
static FRandom pr_batspawn ("BatSpawn");
static FRandom pr_batmove ("BatMove");
//===========================================================================
// Bat Spawner Variables
// special1 frequency counter
// special2
// args[0] frequency of spawn (1=fastest, 10=slowest)
// args[1] spread angle (0..255)
// args[2]
// args[3] duration of bats (in octics)
// args[4] turn amount per move (in degrees)
//
// Bat Variables
// special2 lifetime counter
// args[4] turn amount per move (in degrees)
//===========================================================================
DEFINE_ACTION_FUNCTION(AActor, A_BatSpawnInit)
{
self->special1 = 0; // Frequency count
}
DEFINE_ACTION_FUNCTION(AActor, A_BatSpawn)
{
AActor *mo;
int delta;
angle_t angle;
// Countdown until next spawn
if (self->special1-- > 0) return;
self->special1 = self->args[0]; // Reset frequency count
delta = self->args[1];
if (delta==0) delta=1;
angle = self->angle + (((pr_batspawn()%delta)-(delta>>1))<<24);
mo = P_SpawnMissileAngle (self, PClass::FindClass ("Bat"), angle, 0);
if (mo)
{
mo->args[0] = pr_batspawn()&63; // floatbob index
mo->args[4] = self->args[4]; // turn degrees
mo->special2 = self->args[3]<<3; // Set lifetime
mo->target = self;
}
}
DEFINE_ACTION_FUNCTION(AActor, A_BatMove)
{
angle_t newangle;
if (self->special2 < 0)
{
self->SetState (self->FindState(NAME_Death));
}
self->special2 -= 2; // Called every 2 tics
if (pr_batmove()<128)
{
newangle = self->angle + ANGLE_1*self->args[4];
}
else
{
newangle = self->angle - ANGLE_1*self->args[4];
}
// Adjust velocity vector to new direction
newangle >>= ANGLETOFINESHIFT;
self->velx = FixedMul (self->Speed, finecosine[newangle]);
self->vely = FixedMul (self->Speed, finesine[newangle]);
if (pr_batmove()<15)
{
S_Sound (self, CHAN_VOICE, "BatScream", 1, ATTN_IDLE);
}
// Handle Z movement
self->z = self->target->z + 16*finesine[self->args[0] << BOBTOFINESHIFT];
self->args[0] = (self->args[0]+3)&63;
}