void ascatter_line(int x1, int y1, int x2, int y2, int c1, int c2, int s)
{
short cx1,cy1,cx2,cy2;
screen->get_clip(cx1,cy1,cx2,cy2);
int t=abs(x2-x1)>abs(y2-y1) ? abs(x2-x1)+1 : abs(y2-y1)+1;
long xo=x1<<16,yo=y1<<16,dx=((x2-x1)<<16)/t,dy=((y2-y1)<<16)/t,count=0,x,y;
uchar *sl;
int xm=(1<<s);
int ym=(1<<s);
s=(15-s);
int w=screen->width();
uchar *addr;
while (t--)
{
x=(xo>>16)+(jrand()>>s)-xm;
y=(yo>>16)+(jrand()>>s)-ym;
if (!(x<=cx1 || y<=cy1 || x>=cx2 || y>=cy2))
{
addr=screen->scan_line(y)+x;
*addr=c1;
*(addr+w)=c2;
*(addr-w)=c2;
*(addr-1)=c2;
*(addr+1)=c2;
}
xo+=dx; yo+=dy;
}
}
static int ant_dodge(game_object *o)
{
if (o->lvars[ANT_need_to_dodge]==1)
{
o->lvars[ANT_need_to_dodge]=0;
if ((jrand()%2)==0)
{
o->set_state(stopped);
o->set_aistate(ANT_JUMP);
if (!can_see(o,o->x,o->y,o->x,o->y-120)) // is there a roof above?
{
o->set_yvel(-17);
o->set_xvel(0);
o->set_aistate(ANT_JUMP_ROOF);
ant_ai();
} else
{
o->set_yvel(-12);
if (o->direction>0)
o->set_xvel(22);
else o->set_xvel(-22);
o->set_aistate(ANT_JUMP);
}
}
return 1;
} else return 0;
}
int encfile(aes *ctx, byte *encoutbuf)
{
fpos_t flen;
unsigned long i=0, l=0, j, k;
fillrand(encoutbuf, 16); /* set an IV for CBC mode */
FLEN = 4096;
fillrand(inbuf, 1); /* make top 4 bits of a byte random */
l = 15; /* and store the length of the last */
/* block in the lower 4 bits */
inbuf[0] = ((char)FLEN & 15) | (inbuf[0] & ~15);
for(j = 0; j <256; j++)
{ /* input 1st 16 bytes to buf[1..16] */
for(k = 0; k < 16; ++k)
inbuf[k] = jrand();
for(i = 0; i < 16; ++i) /* xor in previous cipher text */
inbuf[i] ^= encoutbuf[i];
encrypt(inbuf, encoutbuf, ctx); /* and do the encryption */
/* in all but first round read 16 */
l = 16; /* bytes into the buffer */
}
return 0;
}
void scatter_line(int x1, int y1, int x2, int y2, int c, int s)
{
short cx1,cy1,cx2,cy2;
screen->get_clip(cx1,cy1,cx2,cy2);
int t=abs(x2-x1)>abs(y2-y1) ? abs(x2-x1)+1 : abs(y2-y1)+1;
long xo=x1<<16,yo=y1<<16,dx=((x2-x1)<<16)/t,dy=((y2-y1)<<16)/t,count=0,x,y;
uchar *sl;
int xm=(1<<s);
int ym=(1<<s);
s=(15-s);
while (t--)
{
x=(xo>>16)+(jrand()>>s)-xm;
y=(yo>>16)+(jrand()>>s)-ym;
if (!(x<cx1 || y<cy1 || x>cx2 || y>cy2))
*(screen->scan_line(y)+x)=c;
xo+=dx; yo+=dy;
}
}
int decfile(aes *ctx, byte *decoutbuf)
{
int i,j, l, flen, k;
fillrand(inbuf1, 16); /* set an IV for CBC mode */
for(k = 0; k < 16; ++k)
inbuf2[k] = jrand();
decrypt(inbuf2, decoutbuf, ctx); /* decrypt it */
for(i = 0; i < 16; ++i) /* xor with previous input */
decoutbuf[i] ^= inbuf1[i];
flen = 0; /* recover length of the last block and set */
l = 15; /* the count of valid bytes in block to 15 */
bp1 = inbuf1; /* set up pointers to two input buffers */
bp2 = inbuf2;
for(j = 0; j < 256; ++j)
{
for(k = 0; k < 16; ++k)
bp1[k] = jrand();
decrypt(bp1, decoutbuf, ctx); /* decrypt the new input block and */
for(i = 0; i < 16; ++i) /* xor it with previous input block */
decoutbuf[i] ^= bp2[i];
/* set byte count to 16 and swap buffer pointers */
l = i; tp = bp1, bp1 = bp2, bp2 = tp;
}
return 0;
}
void *ant_ai()
{
game_object *o=current_object,*b;
if (o->hp()==0) // if we are dead return NULL and get deleted
{
if (o->state==dead)
return NULL;
else o->set_state(dead);
return true_symbol;
}
if (o->state==flinch_up || o->state==flinch_down)
{
o->next_picture();
return true_symbol;
}
switch (o->aistate())
{
case ANT_START :
{
o->set_state((character_state)S_hanging);
if (o->lvars[ANT_hide_flag])
o->set_aistate(ANT_HIDING);
else o->set_aistate(ANT_HANGING);
} break;
case ANT_HIDING :
{
if ((jrand()%128)==0) the_game->play_sound(S_SCARE_SND,127,o->x,o->y);
if (o->otype!=S_HIDDEN_ANT)
{
o->change_type(S_HIDDEN_ANT); // switch types so noone hurts us.
o->set_state(stopped);
o->set_aistate(ANT_HIDING);
}
int fall=0;
if (o->total_objects()==0)
{
if (player_list->next)
b=current_level->attacker(current_object);
else b=player_list->m_focus;
if (abs(b->x-o->x)<130 && (o->y<b->y))
fall=1;
}
else if (o->get_object(0)->aistate()!=0)
fall=1;
if (fall)
{
o->change_type(S_ANT_ROOF);
o->set_state((character_state)S_falling);
o->set_aistate(ANT_FALL_DOWN);
o->set_targetable(1);
} else o->set_targetable(0);
} break;
case ANT_HANGING :
{
int fall=0;
if ((jrand()%128)==0) the_game->play_sound(S_SCARE_SND,127,o->x,o->y);
if (o->lvars[ANT_hide_flag])
o->set_aistate(ANT_HIDING);
else
{
o->set_state((character_state)S_hanging);
if (o->total_objects())
{
if (o->get_object(0)->aistate()!=0)
fall=1;
} else
{
if (player_list->next)
b=current_level->attacker(current_object);
else b=player_list->m_focus;
if (abs(b->x-o->x)<130 && (o->y<b->y))
fall=1;
}
if (fall)
{
o->set_state((character_state)S_fall_start);
o->set_aistate(ANT_FALL_DOWN);
o->set_targetable(1);
} else o->set_targetable(0);
}
} break;
case ANT_FALL_DOWN :
{
o->set_state((character_state)S_falling);
if (player_list->next)
b=current_level->attacker(current_object);
else b=player_list->m_focus;
scream_check(o,b);
int ret=o->mover(0,0,0);
if ((ret&BLOCKED_DOWN) || !can_see(o,o->x,o->y,o->x,o->y+1))
{
o->set_state((character_state)S_landing);
the_game->play_sound(S_ALAND_SND,127,o->x,o->y);
o->set_aistate(ANT_LANDING);
}
} break;
case ANT_LANDING :
{
if (!o->next_picture())
{
int32_t xv=0,yv=2;
o->try_move(o->x,o->y,xv,yv,1);
if (yv!=0)
{
o->set_gravity(1);
o->set_aistate(ANT_FALL_DOWN);
}
else
{
o->set_state(stopped);
o->set_aistate(ANT_RUNNING);
return (void *)ant_ai;
}
}
} break;
case ANT_RUNNING :
{
if (player_list->next)
b=current_level->attacker(current_object);
else b=player_list->m_focus;
scream_check(o,b);
if ((jrand()%16)==0)
o->lvars[ANT_need_to_dodge]=1;
if (!ant_dodge(o))
{
if ((o->x>b->x && o->direction==-1) || (o->x<b->x && o->direction==1))
{
o->next_picture();
if ((jrand()%4)==0 && abs(o->x-b->x)<180 && abs(o->y-b->y)<100 && can_hit_player(o,b))
{
o->set_state((character_state)S_weapon_fire);
o->set_aistate(ANT_FIRE);
} else if (abs(o->x-b->x)<100 && abs(o->y-b->y)<10 && (jrand()%4)==0)
o->set_aistate(ANT_POUNCE_WAIT);
else if (abs(o->x-b->x)>140 && !ant_congestion(o))
o->set_aistate(ANT_JUMP);
else
{
int32_t xm=o->direction>0 ? get_ability(o->otype,run_top_speed) : -get_ability(o->otype,run_top_speed);
int32_t ym=0,new_xm=xm;
if (o->state!=running) o->set_state(running);
o->try_move(o->x,o->y,new_xm,ym,3);
if (new_xm!=xm) // blocked, see if we can climb ramp
{
new_xm=xm;
ym=-abs(xm);
o->try_move(o->x,o->y,new_xm,ym,3);
if (new_xm==xm)
{
o->x+=new_xm;
o->y+=ym;
new_xm=0;
ym=abs(xm); // now get back on the ground
o->try_move(o->x,o->y,new_xm,ym,3);
o->x+=new_xm;
o->y+=ym;
} else
{
o->direction=0-o->direction;
o->set_aistate(ANT_JUMP);
}
} else
o->x+=new_xm;
new_xm=0;
ym=10; // see if we should fall
o->try_move(o->x,o->y,new_xm,ym,3);
if (ym==10)
o->set_aistate(ANT_FALL_DOWN);
else o->y+=ym;
}
} else
{
o->direction=o->x>b->x ? -1 : 1;
o->set_aistate(ANT_LANDING);
}
}
} break;
case ANT_POUNCE_WAIT :
{
if (!ant_dodge(o))
{
o->set_state((character_state)S_pounce_wait);
if (o->aistate_time()>alien_wait_time())
{
the_game->play_sound(S_ASLASH_SND,127,o->x,o->y);
o->set_state(stopped);
o->set_aistate(ANT_JUMP);
}
}
} break;
case ANT_JUMP :
{
o->lvars[ANT_need_to_dodge]=0;
if (o->move(o->direction,-1,0)&BLOCKED_DOWN)
o->set_aistate(ANT_RUNNING);
} break;
case ANT_FIRE :
{
if (!ant_dodge(o))
{
if (o->state==S_fire_wait)
{
if (!o->next_picture() || symbol_value(l_difficulty)==l_extreme)
{
if (player_list->next)
b=current_level->attacker(current_object);
else b=player_list->m_focus;
fire_at_player(o,b);
o->set_state(stopped);
o->set_aistate(ANT_RUNNING);
}
} else o->set_state((character_state)S_fire_wait);
}
} break;
case ANT_JUMP_ROOF :
{
o->lvars[ANT_need_to_dodge]=0;
o->set_state((character_state)S_jump_up);
// o->set_yvel(o->yvel()+1);
o->set_xacel(0);
int32_t xv=0,yv=o->yvel();
o->y-=31;
o->try_move(o->x,o->y,xv,yv,1);
o->y+=31+yv;
if (yv!=o->yvel())
{
if (o->yvel()>0)
{
o->set_state(stopped);
o->set_aistate(ANT_RUNNING);
} else
{
o->set_state((character_state)S_top_walk);
o->set_aistate(ANT_ROOF_WALK);
}
o->set_yvel(0);
}
} break;
case ANT_ROOF_WALK :
{
if (player_list->next)
b=current_level->attacker(current_object);
else b=player_list->m_focus;
scream_check(o,b);
if (((jrand()%8)==0 && abs(o->x-b->x)<10 && o->y<b->y) ||
o->lvars[ANT_need_to_dodge]==1)
{
o->set_gravity(1);
o->set_state(run_jump);
o->set_aistate(ANT_JUMP);
ant_ai();
}
else
{
if ((o->x>b->x && o->direction>0) || (o->x<b->x && o->direction<0))
o->direction=-o->direction;
else if (abs(o->x-b->x)<120 && (jrand()%4)==0)
{
o->set_state((character_state)S_ceil_fire);
o->set_aistate(ANT_CEIL_SHOOT);
ant_ai();
} else
{
int speed=o->direction>0 ? get_ability(o->otype,run_top_speed) :
-get_ability(o->otype,run_top_speed);
if (can_see(o,o->x,o->y-31,o->x+speed,o->y-31) &&
!can_see(o,o->x+speed,o->y-31,o->x+speed,o->y-32))
{
o->x+=speed;
if (!o->next_picture()) o->set_state((character_state)S_top_walk);
} else o->set_aistate(ANT_FALL_DOWN);
}
}
} break;
case ANT_CEIL_SHOOT :
{
if (!o->next_picture())
{
if (player_list->next)
b=current_level->attacker(current_object);
else b=player_list->m_focus;
fire_at_player(o,b);
o->set_state((character_state)S_top_walk);
o->set_aistate(ANT_ROOF_WALK);
}
} break;
}
return true_symbol;
}
