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aliens.c
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aliens.c
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/*------------------------------------------------------------------
aliens.c:
XINVADERS 3D - 3d Shoot'em up
Copyright (C) 2000 Don Llopis
+Copyright(C) 2022 Jose Da Silva
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
------------------------------------------------------------------*/
#include "game.h"
#define ALIEN_RADIUS 20.0f
#define ALIEN_RADIUS_SQUARED 400.0f
#define BOMB_RADIUS 20.0f
#define BOMB_RADIUS_SQUARED 400.0f
#define UFO_RADIUS 20.0f
#define UFO_RADIUS_SQUARED 400.0f
#define UFO_MIN_X_POS -600.0f
#define UFO_MAX_X_POS 600.0f
#define UFO_Z_POS -950.0f
#define FORMATION_X_INC 75.0f
#define FORMATION_Y_INC 100.0f
#define FORMATION_MAX_X_POS 550.0f
#define FORMATION_MIN_X_POS -550.0f
#define FORMATION_MAX_Y_POS 450.0f
#define FORMATION_MIN_Y_POS 50.0f
#define FORMATION_MAX_Z_POS -850.0f
#define FORMATION_MIN_Z_POS 50.0f
enum alien_enum
{
MAX_FORMATIONS = 5,
MAX_ALIENS = 40,
ALIENS_PER_FORMATION = 8,
MAX_BOMBS = 12,
LEFT = 0,
RIGHT = 1,
FORWARD = 2,
DIRECTION_TOGGLE = 1,
ANIMATION_TOGGLE = 1,
MAX_COLUMNS = 8,
START_LEAD_COLUMN = 7,
FORMATION_STEP = 3, /* dist_between_aliens / thrust */
FORWARD_START = 21, /* formation x FORMATION_STEP */
FORWARD_MAX = 45, /* must calc by hand */
FORWARD_MIN = 0,
DROP_BOMB_TIME = 500, /* 0.5 sec */
DROP_BOMB_CHANCE_1 = 50,
DROP_BOMB_CHANCE_2 = 40,
UFO_ZONE = 9,
UFO_LIGHTS_CYCLE = 250,
SPAWN_UFO_TIME = 5000,
SPAWN_UFO_CHANCE_1 = 10,
SPAWN_UFO_CHANCE_2 = 5
};
OBJECT aliens [MAX_ALIENS];
OBJECT bombs [MAX_BOMBS];
OBJECT alien_ufo, *ufo;
OBJECT the_formation;
OBJLIST flist[MAX_FORMATIONS], *af_list;
OBJLIST abomblist, *abombs;
/* formation speed in msec */
static int fspeed[9] = { 1000, 750, 500,
400, 400, 300,
200, 150, 100 };
static VEC fstart_pos =
{
FORMATION_MIN_X_POS,
FORMATION_MIN_Y_POS,
FORMATION_MAX_Z_POS,
1.0f
};
static VEC fstart_dir = { 0.0f, 0.0f, 1.0f, 1.0f };
static VEC fthrust[3] = { { -25.0f, 0.0f, 0.0f, 1.0f },
{ 25.0f, 0.0f, 0.0f, 1.0f },
{ 0.0f, 0.0f, 100.0f, 1.0f } };
static VEC abomb_thrust = { 0.0f, 0.0f, 25.0f, 1.0f };
static VEC ufo_thrust = { 5.0f, 0.0f, 0.0f, 1.0f };
static VEC avert1[48] = {
{ -20.0f, 20.0f, 0.0f, 1.0f }, /* A0: body*/
{ 20.0f, 20.0f, 0.0f, 1.0f },
{ 20.0f, 0.0f, 0.0f, 1.0f },
{ -20.0f, 0.0f, 0.0f, 1.0f },
{ 0.0f, 0.0f, 0.0f, 1.0f }, /* A0: legs*/
{ -20.0f, -10.0f, 0.0f, 1.0f },
{ -15.0f, -15.0f, 0.0f, 1.0f },
{ -20.0f, -25.0f, 0.0f, 1.0f },
{ 20.0f, -10.0f, 0.0f, 1.0f },
{ 15.0f, -15.0f, 0.0f, 1.0f },
{ 20.0f, -25.0f, 0.0f, 1.0f },
{ 0.0f, 10.0f, 0.0f, 1.0f }, /* A0: eyes*/
{ -15.0, 18.0f, 0.0f, 1.0f },
{ -15.0, 2.0f, 0.0f, 1.0f },
{ 15.0, 18.0f, 0.0f, 1.0f },
{ 15.0, 2.0f, 0.0f, 1.0f },
{ -15.0f, 20.0f, 0.0f, 1.0f }, /* A1: body*/
{ 15.0f, 20.0f, 0.0f, 1.0f },
{ 5.0f, 0.0f, 0.0f, 1.0f },
{ -5.0f, 0.0f, 0.0f, 1.0f },
{ 0.0f, 0.0f, 0.0f, 1.0f }, /* A1: legs*/
{ -20.0f, -10.0f, 0.0f, 1.0f },
{ -15.0f, -15.0f, 0.0f, 1.0f },
{ -20.0f, -25.0f, 0.0f, 1.0f },
{ 20.0f, -10.0f, 0.0f, 1.0f },
{ 15.0f, -15.0f, 0.0f, 1.0f },
{ 20.0f, -25.0f, 0.0f, 1.0f },
{ 0.0f, 0.0f, 0.0f, 1.0f }, /* A1: eyes*/
{ -20.0, 15.0f, 0.0f, 1.0f },
{ -15.0, 0.0f, 0.0f, 1.0f },
{ 20.0, 15.0f, 0.0f, 1.0f },
{ 15.0, 0.0f, 0.0f, 1.0f },
{ -5.0f, 20.0f, 0.0f, 1.0f }, /* A2: body*/
{ 5.0f, 20.0f, 0.0f, 1.0f },
{ 20.0f, 0.0f, 0.0f, 1.0f },
{ -20.0f, 0.0f, 0.0f, 1.0f },
{ 0.0f, 0.0f, 0.0f, 1.0f }, /* A2: legs*/
{ -20.0f, -10.0f, 0.0f, 1.0f },
{ -15.0f, -15.0f, 0.0f, 1.0f },
{ -20.0f, -25.0f, 0.0f, 1.0f },
{ 20.0f, -10.0f, 0.0f, 1.0f },
{ 15.0f, -15.0f, 0.0f, 1.0f },
{ 20.0f, -25.0f, 0.0f, 1.0f },
{ 0.0f, 20.0f, 0.0f, 1.0f }, /* A2: eyes*/
{ -20.0, 25.0f, 0.0f, 1.0f },
{ -15.0, 15.0f, 0.0f, 1.0f },
{ 20.0, 25.0f, 0.0f, 1.0f },
{ 15.0, 15.0f, 0.0f, 1.0f }
};
static VEC avert2[48] = {
{ -20.0f, 20.0f, 0.0f, 1.0f }, /*A0: body*/
{ 20.0f, 20.0f, 0.0f, 1.0f },
{ 20.0f, 0.0f, 0.0f, 1.0f },
{ -20.0f, 0.0f, 0.0f, 1.0f },
{ 0.0f, 0.0f, 0.0f, 1.0f }, /*A0: legs*/
{ -10.0f, -5.0f, 0.0f, 1.0f },
{ -5.0f, -10.0f, 0.0f, 1.0f },
{ -10.0f, -25.0f, 0.0f, 1.0f },
{ 10.0f, -5.0f, 0.0f, 1.0f },
{ 5.0f, -10.0f, 0.0f, 1.0f },
{ 10.0f, -25.0f, 0.0f, 1.0f },
{ 0.0f, 15.0f, 0.0f, 1.0f }, /* A0: eyes*/
{ -10.0, 25.0f, 0.0f, 1.0f },
{ -15.0, 7.0f, 0.0f, 1.0f },
{ 10.0, 25.0f, 0.0f, 1.0f },
{ 15.0, 7.0f, 0.0f, 1.0f },
{ -15.0f, 20.0f, 0.0f, 1.0f }, /* A1: body*/
{ 15.0f, 20.0f, 0.0f, 1.0f },
{ 5.0f, 0.0f, 0.0f, 1.0f },
{ -5.0f, 0.0f, 0.0f, 1.0f },
{ 0.0f, 0.0f, 0.0f, 1.0f }, /*A1: legs*/
{ -10.0f, -5.0f, 0.0f, 1.0f },
{ -5.0f, -10.0f, 0.0f, 1.0f },
{ -10.0f, -30.0f, 0.0f, 1.0f },
{ 10.0f, -5.0f, 0.0f, 1.0f },
{ 5.0f, -10.0f, 0.0f, 1.0f },
{ 10.0f, -30.0f, 0.0f, 1.0f },
{ 0.0f, 10.0f, 0.0f, 1.0f }, /* A1: eyes*/
{ -20.0, 15.0f, 0.0f, 1.0f },
{ -15.0, 0.0f, 0.0f, 1.0f },
{ 20.0, 15.0f, 0.0f, 1.0f },
{ 15.0, 0.0f, 0.0f, 1.0f },
{ -5.0f, 20.0f, 0.0f, 1.0f }, /* A2: body*/
{ 5.0f, 20.0f, 0.0f, 1.0f },
{ 20.0f, 0.0f, 0.0f, 1.0f },
{ -20.0f, 0.0f, 0.0f, 1.0f },
{ 0.0f, 0.0f, 0.0f, 1.0f }, /*A2: legs*/
{ -10.0f, -5.0f, 0.0f, 1.0f },
{ -5.0f, -10.0f, 0.0f, 1.0f },
{ -10.0f, -30.0f, 0.0f, 1.0f },
{ 10.0f, -5.0f, 0.0f, 1.0f },
{ 5.0f, -10.0f, 0.0f, 1.0f },
{ 10.0f, -30.0f, 0.0f, 1.0f },
{ 0.0f, 5.0f, 0.0f, 1.0f }, /* A2: eyes*/
{ -20.0, 20.0f, 0.0f, 1.0f },
{ -15.0, 0.0f, 0.0f, 1.0f },
{ 20.0, 20.0f, 0.0f, 1.0f },
{ 15.0, 0.0f, 0.0f, 1.0f }
};
static VEC abomb_vert[3] = {
{ -10.0f, 0.0f, -10.0f, 1.0f },
{ 0.0f, 0.0f, 10.0f, 1.0f },
{ 10.0f, 0.0f, -10.0f, 1.0f }
};
static VEC abomb_vert2[3] = {
{ 0.0f, 10.0f, 0.0f, 1.0f },
{ 0.0f, 0.0f, 10.0f, 1.0f },
{ 0.0f, -10.0f, 0.0f, 1.0f }
};
static VEC uvert1[17] = {
{ -20.0f, 0.0f, 0.0f, 1.0f }, /* UFO body */
{ -10.0f, 10.0f, 0.0f, 1.0f },
{ 10.0f, 10.0f, 0.0f, 1.0f },
{ 20.0f, 0.0f, 0.0f, 1.0f },
{ -20.0f, -20.0f, 0.0f, 1.0f }, /* left leg */
{ -10.0f, 0.0f, 0.0f, 1.0f },
{ -5.0f, 0.0f, 0.0f, 1.0f },
{ 20.0f, -20.0f, 0.0f, 1.0f }, /* right leg */
{ 10.0f, 0.0f, 0.0f, 1.0f },
{ 5.0f, 0.0f, 0.0f, 1.0f },
{ -10.0f, 10.0f, 0.0f, 1.0f }, /* top */
{ 0.0f, 20.0f, 0.0f, 1.0f },
{ 10.0f, 10.0f, 1.0f, 1.0f },
{ -15.0f, 5.0f, 0.0f, 1.0f }, /* windows */
{ -5.0f, 5.0f, 0.0f, 1.0f },
{ 5.0f, 5.0f, 0.0f, 1.0f },
{ 15.0f, 5.0f, 0.0f, 1.0f }
};
static int fmove; /* FORMATION move sideways timer */
static int fforward; /* FORMATION move forward counter */
static int fforward_max; /* FORMATION move forward max */
static int fleadcol; /* FORMATION lead column */
static int fanim; /* FORMATION animation counter */
static int fdir; /* FORMATION movement direction */
static int fscur; /* FORMATION speed variable */
static int drop_bomb; /* drop bomb timer */
static
int fcolumn[MAX_COLUMNS]; /* FORMATION column count */
static int spawn_ufo; /* spawn ufo timer */
static int ucolor; /* ufo lights cycle timer */
static void Add_bomb ( OBJECT * );
/*================================================================*/
void Aliens_init ( void )
{
int i, j;
VEC tmp_pos;
OBJECT *alien;
OBJLIST *f_ptr;
/* initialize formations */
/*
* the formation is a dummy-object used for
* object-sorting purposes
*/
Object_init ( &the_formation );
Object_set_drawfn ( &the_formation, Aliens_draw );
Vector_copy ( fstart_pos, the_formation.pos );
the_formation.zone = ZONE_8;
gv->formation_zone = ZONE_8;
gv->alien_count = MAX_ALIENS;
fmove = 0;
fforward = FORWARD_START;
fforward_max = FORWARD_MAX;
fleadcol = START_LEAD_COLUMN;
fdir = RIGHT;
fanim = 0;
fscur = 0;
drop_bomb = 0;
/* place aliens into their appropriate formations */
/* 8 aliens per formation -- total of 5 formations */
af_list = &flist[0];
f_ptr = &flist[0];
alien = &aliens[0];
Vector_init ( tmp_pos );
for ( i = 0; i < MAX_COLUMNS; i++ )
fcolumn[i] = 0;
for ( i = 0; i < MAX_FORMATIONS; i++ )
{
Objlist_clear ( f_ptr );
Vector_copy ( fstart_pos, tmp_pos );
tmp_pos[YPOS] += (FORMATION_Y_INC * i);
for ( j = 0; j < ALIENS_PER_FORMATION; j++ )
{
Object_init ( alien );
Object_set_pos ( alien, tmp_pos );
Object_set_dir ( alien, fstart_dir );
alien->zone = gv->formation_zone;
alien->zheight = i;
alien->vpos = j;
alien->radius = ALIEN_RADIUS;
alien->radius_squared = ALIEN_RADIUS_SQUARED;
Objlist_add ( f_ptr, alien );
tmp_pos[XPOS] += FORMATION_X_INC;
fcolumn[j] +=1;
alien++;
}
f_ptr++;
}
/* initialize alien bombs */
for ( i = 0; i < MAX_BOMBS; i++ )
{
Object_init ( &bombs[i] );
bombs[i].radius = BOMB_RADIUS;
bombs[i].radius_squared = BOMB_RADIUS_SQUARED;
Object_set_drawfn ( &bombs[i], Alien_missile_draw );
}
abombs = &abomblist;
Objlist_clear ( abombs );
/* initialize the UFO */
spawn_ufo = 0;
gv->ufo_zone = ZONE_9;
ufo = &alien_ufo;
Object_init ( ufo );
Object_set_drawfn ( ufo, Ufo_draw );
ufo->radius = UFO_RADIUS;
ufo->radius_squared = UFO_RADIUS_SQUARED;
ufo->delay = 0;
ucolor = 0;
}
/*================================================================*/
void Update_fcolumn ( OBJECT *obj )
{
int i, j, tmp;
if ( gv->alien_count == 0 ) return;
i = obj->vpos;
fcolumn[i] -= 1;
/* select new lead-column if current lead-column is empty */
if ( fleadcol == i && fcolumn[i] == 0 )
{
j = fleadcol;
if ( fdir == LEFT )
{
while ( j < MAX_COLUMNS )
{
if ( fcolumn[j] > 0 )
break;
j++;
}
tmp = (j-fleadcol) * 3;
}
else
{
while ( j > -1 )
{
if ( fcolumn[j] > 0 )
break;
j--;
}
tmp = (fleadcol-j) * 3;
}
fforward -= tmp;
fleadcol = j;
}
/* update alien movement speed */
if ( ( gv->alien_count % 5 ) == 0 )
fscur++;
}
void Aliens_update ( void )
{
int i, j, fdir_save, chance;
OBJECT *alien, *abomb, *tmp;
/* move alien bombs */
drop_bomb += gv->msec;
abomb = abombs->head;
while ( abomb )
{
Vector_copy ( abomb->pos, abomb->old_pos );
abomb->pos[ZPOS] += abomb_thrust[ZPOS] * gv->fadjust;
if ( abomb->pos[ZPOS] > 0.0 )
{
abomb->active = FALSE;
tmp = abomb->next;
Objlist_del ( abombs, abomb );
abomb = tmp;
}
else
{
Object_update_zone ( abomb );
abomb = abomb->next;
}
}
/* update alien formation */
if ( gv->alien_count > 0 && \
( player1->active || ( gv->pduel && player2->active ) ) )
{
fmove += gv->msec;
if ( fmove > fspeed[fscur] )
{
while ( fmove > fspeed[fscur] )
fmove -= fspeed[fscur];
fforward++;
fanim ^= ANIMATION_TOGGLE;
fdir_save = fdir;
/* is it time to move the formation forward?? */
if ( fforward == fforward_max )
{
fforward = 0;
gv->formation_zone--;
the_formation.zone--;
Vector_addd ( the_formation.pos, fthrust[FORWARD] );
/* choose new lead column */
if ( fdir == LEFT )
{
i = MAX_COLUMNS - 1;
while ( i > -1 )
{
if ( fcolumn[i] > 0 )
break;
i--;
}
fforward = ( ( i - fleadcol ) * FORMATION_STEP );
fdir_save = RIGHT;
}
else
{
i = 0;
while ( i < MAX_COLUMNS )
{
if ( fcolumn[i] > 0 )
break;
i++;
}
fforward = ( ( fleadcol - i ) * FORMATION_STEP );
fdir_save = LEFT;
}
fleadcol = i;
fdir = FORWARD;
}
for ( i = 0; i < MAX_FORMATIONS; i++ )
{
alien = (af_list+i)->head;
while ( alien )
{
Vector_addd ( alien->pos, fthrust[fdir] );
Object_update_zone ( alien );
alien = alien->next;
}
}
fdir = fdir_save;
}
}
/* move ufo */
if ( ufo->active )
{
/* adjust velocity according to frame time */
/* set new position */
ufo->pos[XPOS] += ufo_thrust[XPOS] * gv->fadjust;
ufo->pos[YPOS] += ufo_thrust[YPOS] * gv->fadjust;
ufo->pos[ZPOS] += ufo_thrust[ZPOS] * gv->fadjust;
Object_update_zone ( ufo );
if ( ufo->pos[XPOS] > UFO_MAX_X_POS )
{
Jumpgate_open ( ufo->pos, RIGHT );
ufo->active = FALSE;
}
}
else
{
spawn_ufo += gv->msec;
if ( spawn_ufo > SPAWN_UFO_TIME )
{
spawn_ufo -= SPAWN_UFO_TIME;
Ufo_spawn ();
}
}
/* drop a bomb or two */
if ( drop_bomb > DROP_BOMB_TIME )
{
drop_bomb -= DROP_BOMB_TIME;
chance = rand() % DROP_BOMB_CHANCE_1;
if ( chance < DROP_BOMB_CHANCE_2 )
{
/* pick formation in front of highest score player */
if ( gv->pduel && gv->pscore2 > gv->pscore1 )
i = pm2->zheight;
else
i = pm1->zheight;
if ( i >= 0 && i < ZONE_HEIGHT_MAX )
{
alien = (af_list+i)->head;
if ( alien )
{
/* pick an alien who will drop a bomb */
j = (rand() % (af_list+i)->obj_count );
while ( j )
{
alien = alien->next;
j--;
}
/* find an inactive bomb and use it */
Add_bomb ( alien );
}
}
/* pick a random formation */
i = rand () % MAX_FORMATIONS;
alien = (af_list+i)->head;
if ( alien )
{
/* pick an alien who will drop a bomb */
j = (rand() % (af_list+i)->obj_count );
while ( j )
{
alien = alien->next;
j--;
}
/* find an inactive bomb and use it */
Add_bomb ( alien );
}
}
}
}
/*================================================================*/
static void Add_bomb ( OBJECT *alien )
{
int i;
OBJECT *abomb;
for ( i = 0; i < MAX_BOMBS; i++ )
{
abomb = &bombs[i];
if ( abomb->active == FALSE )
{
abomb->active = TRUE;
Vector_copy ( alien->pos, abomb->pos );
Vector_copy ( alien->pos, abomb->old_pos );
Objlist_add ( abombs, abomb );
break;
}
}
}
/*================================================================*/
void Aliens_draw ( OBJECT *obj, MAT r1, MAT r2 )
{
OBJECT *alien;
VEC tmp[16];
MAT tmp_mat;
int p1[32], p2[32], fmodel;
int i, j, x1R, y1B, x2L, y2T;
x1R = gv->x1r;
y1B = gv->y1b;
x2L = gv->x2l;
y2T = gv->y2t;
for ( i = 0; i < MAX_FORMATIONS; i++ )
{
if ( i == MAX_FORMATIONS-1 )
fmodel = 2;
else if ( i > 1 )
fmodel = 1;
else
fmodel = 0;
alien = (af_list+i)->head;
while ( alien )
{
Matrix_vec_mult ( r1, alien->pos, tmp[0] );
Camera_project_points ( tmp, p1, 1 );
Matrix_copy ( r1, tmp_mat );
Matrix_set_trans ( tmp_mat, tmp[0] );
if ( fanim )
Matrix_vec_multn ( tmp_mat, &avert2[fmodel*16], tmp, 16 );
else
Matrix_vec_multn ( tmp_mat, &avert1[fmodel*16], tmp, 16 );
Camera_project_points ( tmp, p1, 16 );
if ( gv->pduel )
{
Matrix_vec_mult ( r2, alien->pos, tmp[0] );
Camera_project_points ( tmp, p2, 1 );
Matrix_copy ( r2, tmp_mat );
Matrix_set_trans ( tmp_mat, tmp[0] );
if ( fanim )
Matrix_vec_multn ( tmp_mat, &avert2[fmodel*16], tmp, 16 );
else
Matrix_vec_multn ( tmp_mat, &avert1[fmodel*16], tmp, 16 );
Camera_project_points ( tmp, p2, 16 );
if ( gv->phorizontal )
{
for ( j = 1; j < 32; j += 2 )
{
p1[j] /= 2;
p2[j] = p2[j] / 2 + y2T;
}
}
else if ( gv->pvertical )
{
for ( j = 0; j < 32; j += 2 )
{
p1[j] /= 2;
p2[j] = p2[j] / 2 + x2L;
}
}
else
{
for ( j = 0; j < 32; j += 2 )
{
p1[j] /= 2;
p2[j] = p2[j] / 2 + x2L;
}
for ( j = 1; j < 32; j += 2 )
{
p1[j] /= 2;
p2[j] = p2[j] / 2 + y2T;
}
}
/* body */
if ( p2[0] >= x2L && p2[2] >= x2L && \
p2[1] >= y2T && p2[3] >= y2T )
Draw_line ( p2[0], p2[1], p2[2], p2[3], GREEN );
if ( p2[2] >= x2L && p2[4] >= x2L && \
p2[3] >= y2T && p2[5] >= y2T )
Draw_line ( p2[2], p2[3], p2[4], p2[5], GREEN );
if ( p2[4] >= x2L && p2[6] >= x2L && \
p2[5] >= y2T && p2[7] >= y2T )
Draw_line ( p2[4], p2[5], p2[6], p2[7], GREEN );
if ( p2[6] >= x2L && p2[0] >= x2L && \
p2[7] >= y2T && p2[1] >= y2T )
Draw_line ( p2[6], p2[7], p2[0], p2[1], GREEN );
/* left leg */
if ( p2[8] >= x2L && p2[10] >= x2L && \
p2[9] >= y2T && p2[11] >= y2T )
Draw_line ( p2[8], p2[9], p2[10], p2[11], GREEN );
if ( p2[10] >= x2L && p2[12] >= x2L && \
p2[11] >= y2T && p2[13] >= y2T )
Draw_line ( p2[10], p2[11], p2[12], p2[13], GREEN );
if ( p2[12] >= x2L && p2[8] >= x2L && \
p2[13] >= y2T && p2[9] >= y2T )
Draw_line ( p2[12], p2[13], p2[8], p2[9], GREEN );
if ( p2[10] >= x2L && p2[14] >= x2L && \
p2[11] >= y2T && p2[15] >= y2T )
Draw_line ( p2[10], p2[11], p2[14], p2[15], GREEN );
if ( p2[14] >= x2L && p2[12] >= x2L && \
p2[15] >= y2T && p2[13] >= y2T )
Draw_line ( p2[14], p2[15], p2[12], p2[13], GREEN );
/* right leg */
if ( p2[8] >= x2L && p2[16] >= x2L && \
p2[9] >= y2T && p2[17] >= y2T )
Draw_line ( p2[8], p2[9], p2[16], p2[17], GREEN );
if ( p2[16] >= x2L && p2[18] >= x2L && \
p2[17] >= y2T && p2[19] >= y2T )
Draw_line ( p2[16], p2[17], p2[18], p2[19], GREEN );
if ( p2[18] >= x2L && p2[8] >= x2L && \
p2[19] >= y2T && p2[9] >= y2T )
Draw_line ( p2[18], p2[19], p2[8], p2[9], GREEN );
if ( p2[16] >= x2L && p2[20] >= x2L && \
p2[17] >= y2T && p2[21] >= y2T )
Draw_line ( p2[16], p2[17], p2[20], p2[21], GREEN );
if ( p2[20] >= x2L && p2[18] >= x2L && \
p2[21] >= y2T && p2[19] >= y2T )
Draw_line ( p2[20], p2[21], p2[18], p2[19], GREEN );
/* left eye */
if ( p2[22] >= x2L && p2[24] >= x2L && \
p2[23] >= y2T && p2[25] >= y2T )
Draw_line ( p2[22], p2[23], p2[24], p2[25], RED );
if ( p2[24] >= x2L && p2[26] >= x2L && \
p2[25] >= y2T && p2[27] >= y2T )
Draw_line ( p2[24], p2[25], p2[26], p2[27], RED );
if ( p2[26] >= x2L && p2[22] >= x2L && \
p2[27] >= y2T && p2[23] >= y2T )
Draw_line ( p2[26], p2[27], p2[22], p2[23], RED );
/* right eye */
if ( p2[22] >= x2L && p2[28] >= x2L && \
p2[23] >= y2T && p2[29] >= y2T )
Draw_line ( p2[22], p2[23], p2[28], p2[29], RED );
if ( p2[28] >= x2L && p2[30] >= x2L && \
p2[29] >= y2T && p2[31] >= y2T )
Draw_line ( p2[28], p2[29], p2[30], p2[31], RED );
if ( p2[30] >= x2L && p2[22] >= x2L && \
p2[31] >= y2T && p2[23] >= y2T )
Draw_line ( p2[30], p2[31], p2[22], p2[23], RED );
}
/* body */
if ( p1[0] < x1R && p1[2] < x1R && \
p1[1] < y1B && p1[3] < y1B )
Draw_line ( p1[0], p1[1], p1[2], p1[3], GREEN );
if ( p1[2] < x1R && p1[4] < x1R && \
p1[3] < y1B && p1[5] < y1B )
Draw_line ( p1[2], p1[3], p1[4], p1[5], GREEN );
if ( p1[4] < x1R && p1[6] < x1R && \
p1[5] < y1B && p1[7] < y1B )
Draw_line ( p1[4], p1[5], p1[6], p1[7], GREEN );
if ( p1[6] < x1R && p1[0] < x1R && \
p1[7] < y1B && p1[1] < y1B )
Draw_line ( p1[6], p1[7], p1[0], p1[1], GREEN );
/* left leg */
if ( p1[8] < x1R && p1[10] < x1R && \
p1[9] < y1B && p1[11] < y1B )
Draw_line ( p1[8], p1[9], p1[10], p1[11], GREEN );
if ( p1[10] < x1R && p1[12] < x1R && \
p1[11] < y1B && p1[13] < y1B )
Draw_line ( p1[10], p1[11], p1[12], p1[13], GREEN );
if ( p1[12] < x1R && p1[8] < x1R && \
p1[13] < y1B && p1[9] < y1B )
Draw_line ( p1[12], p1[13], p1[8], p1[9], GREEN );
if ( p1[10] < x1R && p1[14] < x1R && \
p1[11] < y1B && p1[15] < y1B )
Draw_line ( p1[10], p1[11], p1[14], p1[15], GREEN );
if ( p1[14] < x1R && p1[12] < x1R && \
p1[15] < y1B && p1[13] < y1B )
Draw_line ( p1[14], p1[15], p1[12], p1[13], GREEN );
/* right leg */
if ( p1[8] < x1R && p1[16] < x1R && \
p1[9] < y1B && p1[17] < y1B )
Draw_line ( p1[8], p1[9], p1[16], p1[17], GREEN );
if ( p1[16] < x1R && p1[18] < x1R && \
p1[17] < y1B && p1[19] < y1B )
Draw_line ( p1[16], p1[17], p1[18], p1[19], GREEN );
if ( p1[18] < x1R && p1[8] < x1R && \
p1[19] < y1B && p1[9] < y1B )
Draw_line ( p1[18], p1[19], p1[8], p1[9], GREEN );
if ( p1[16] < x1R && p1[20] < x1R && \
p1[17] < y1B && p1[21] < y1B )
Draw_line ( p1[16], p1[17], p1[20], p1[21], GREEN );
if ( p1[20] < x1R && p1[18] < x1R && \
p1[21] < y1B && p1[19] < y1B )
Draw_line ( p1[20], p1[21], p1[18], p1[19], GREEN );
/* left eye */
if ( p1[22] < x1R && p1[24] < x1R && \
p1[23] < y1B && p1[25] < y1B )
Draw_line ( p1[22], p1[23], p1[24], p1[25], RED );
if ( p1[24] < x1R && p1[26] < x1R && \
p1[25] < y1B && p1[27] < y1B )
Draw_line ( p1[24], p1[25], p1[26], p1[27], RED );
if ( p1[26] < x1R && p1[22] < x1R && \
p1[27] < y1B && p1[23] < y1B )
Draw_line ( p1[26], p1[27], p1[22], p1[23], RED );
/* right eye */
if ( p1[22] < x1R && p1[28] < x1R && \
p1[23] < y1B && p1[29] < y1B )
Draw_line ( p1[22], p1[23], p1[28], p1[29], RED );
if ( p1[28] < x1R && p1[30] < x1R && \
p1[29] < y1B && p1[31] < y1B )
Draw_line ( p1[28], p1[29], p1[30], p1[31], RED );
if ( p1[30] < x1R && p1[22] < x1R && \
p1[31] < y1B && p1[23] < y1B )
Draw_line ( p1[30], p1[31], p1[22], p1[23], RED );
alien = alien->next;
}
}
}
void Alien_missile_draw ( OBJECT *obj, MAT r1, MAT r2 )
{
MAT tmp_mat1, tmp_mat2;
VEC tmp[3];
int x1R, y1B, x2L, y2T;
int p1[6], p2[6], p3[6], p4[6];
x1R = gv->x1r;
y1B = gv->y1b;
Matrix_vec_mult ( r1, obj->pos, tmp[0] );
Matrix_copy ( r1, tmp_mat1 );
Matrix_set_trans ( tmp_mat1, tmp[0] );
Matrix_vec_multn ( tmp_mat1, abomb_vert, tmp, 3 );
Camera_project_points ( tmp, p1, 3 );
Matrix_vec_multn ( tmp_mat1, abomb_vert2, tmp, 3 );
Camera_project_points ( tmp, p3, 3 );
if ( gv->pduel )
{
x2L = gv->x2l;
y2T = gv->y2t;
Matrix_vec_mult ( r2, obj->pos, tmp[0] );
Matrix_copy ( r2, tmp_mat2 );
Matrix_set_trans ( tmp_mat2, tmp[0] );
Matrix_vec_multn ( tmp_mat2, abomb_vert, tmp, 3 );
Camera_project_points ( tmp, p2, 3 );
Matrix_vec_multn ( tmp_mat2, abomb_vert2, tmp, 3 );
Camera_project_points ( tmp, p4, 3 );
if ( gv->phorizontal )
{
p1[1] /= 2;
p1[3] /= 2;
p1[5] /= 2;
p3[1] /= 2;
p3[3] /= 2;
p3[5] /= 2;
p2[1] = p2[1] / 2 + y2T;
p2[3] = p2[3] / 2 + y2T;
p2[5] = p2[5] / 2 + y2T;
p4[1] = p4[1] / 2 + y2T;
p4[3] = p4[3] / 2 + y2T;
p4[5] = p4[5] / 2 + y2T;
}
else if ( gv->pvertical )
{
p1[0] /= 2;
p1[2] /= 2;
p1[4] /= 2;
p3[0] /= 2;
p3[2] /= 2;
p3[4] /= 2;
p2[0] = p2[0] / 2 + x2L;
p2[2] = p2[2] / 2 + x2L;
p2[4] = p2[4] / 2 + x2L;
p4[0] = p4[0] / 2 + x2L;
p4[2] = p4[2] / 2 + x2L;
p4[4] = p4[4] / 2 + x2L;
}
else
{
p1[0] /= 2;
p1[2] /= 2;
p1[4] /= 2;
p3[0] /= 2;
p3[2] /= 2;
p3[4] /= 2;
p2[0] = p2[0] / 2 + x2L;
p2[2] = p2[2] / 2 + x2L;
p2[4] = p2[4] / 2 + x2L;
p4[0] = p4[0] / 2 + x2L;
p4[2] = p4[2] / 2 + x2L;
p4[4] = p4[4] / 2 + x2L;
p1[1] /= 2;
p1[3] /= 2;
p1[5] /= 2;
p3[1] /= 2;
p3[3] /= 2;
p3[5] /= 2;
p2[1] = p2[1] / 2 + y2T;
p2[3] = p2[3] / 2 + y2T;
p2[5] = p2[5] / 2 + y2T;
p4[1] = p4[1] / 2 + y2T;
p4[3] = p4[3] / 2 + y2T;
p4[5] = p4[5] / 2 + y2T;
}
if ( p2[0] >= x2L && p2[2] >= x2L && \
p2[1] >= y2T && p2[3] >= y2T )
Draw_line ( p2[0], p2[1], p2[2], p2[3], YELLOW );
if ( p2[2] >= x2L && p2[4] >= x2L && \
p2[3] >= y2T && p2[5] >= y2T )
Draw_line ( p2[2], p2[3], p2[4], p2[5], YELLOW );
if ( p2[4] >= x2L && p2[0] >= x2L && \
p2[5] >= y2T && p2[1] >= y2T )
Draw_line ( p2[4], p2[5], p2[0], p2[1], YELLOW );
if ( p4[0] >= x2L && p4[2] >= x2L && \
p4[1] >= y2T && p4[3] >= y2T )
Draw_line ( p4[0], p4[1], p4[2], p4[3], YELLOW );
if ( p2[2] >= x2L && p4[4] >= x2L && \
p2[3] >= y2T && p4[5] >= y2T )
Draw_line ( p4[2], p4[3], p4[4], p4[5], YELLOW );
if ( p4[4] >= x2L && p4[0] >= x2L && \
p4[5] >= y2T && p4[1] >= y2T )
Draw_line ( p4[4], p4[5], p4[0], p4[1], YELLOW );
}
if ( p1[0] < x1R && p1[2] < x1R && \
p1[1] < y1B && p1[3] < y1B )
Draw_line ( p1[0], p1[1], p1[2], p1[3], YELLOW );
if ( p1[2] < x1R && p1[4] < x1R && \
p1[3] < y1B && p1[5] < y1B )
Draw_line ( p1[2], p1[3], p1[4], p1[5], YELLOW );
if ( p1[4] < x1R && p1[0] < x1R && \
p1[5] < y1B && p1[1] < y1B )
Draw_line ( p1[4], p1[5], p1[0], p1[1], YELLOW );
if ( p3[0] < x1R && p3[2] < x1R && \
p3[1] < y1B && p3[3] < y1B )
Draw_line ( p3[0], p3[1], p3[2], p3[3], YELLOW );
if ( p3[2] < x1R && p3[4] < x1R && \
p3[3] < y1B && p3[5] < y1B )
Draw_line ( p3[2], p3[3], p3[4], p3[5], YELLOW );
if ( p3[4] < x1R && p3[0] < x1R && \
p3[5] < y1B && p3[1] < y1B )
Draw_line ( p3[4], p3[5], p3[0], p3[1], YELLOW );
}
/*================================================================*/
void Ufo_spawn ( void )
{
int height;
float y, z;
height = rand() % MAX_FORMATIONS;
y = ( (float)(height) * 100.0f ) + 50.0f;
z = UFO_Z_POS;
ufo->zone = UFO_ZONE;
ufo->zheight = height;
Vector_set ( ufo->pos, UFO_MIN_X_POS, y, z );
Jumpgate_open ( ufo->pos, LEFT );
ufo->active = TRUE;
}
void Ufo_draw ( OBJECT *obj, MAT r1, MAT r2 )
{
MAT tmp_mat;
VEC tmp[17];
int p1[34], p2[34];
int i, x1R, y1B, x2L, y2T;
unsigned int color;
x1R = gv->x1r;
y1B = gv->y1b;
ufo->delay += gv->msec;
if ( ufo->delay > UFO_LIGHTS_CYCLE )
{
ufo->delay -= UFO_LIGHTS_CYCLE;
ucolor++;
if ( ucolor >= 4 )
ucolor = 0;
}
color = RED - ( ucolor * 15 );
Matrix_vec_mult ( r1, obj->pos, tmp[0] );
Matrix_copy ( r1, tmp_mat );
Matrix_set_trans ( tmp_mat, tmp[0] );
Matrix_vec_multn ( tmp_mat, uvert1, tmp, 17 );
Camera_project_points ( tmp, p1, 17 );
if ( gv->pduel )
{
x2L = gv->x2l;
y2T = gv->y2t;
Matrix_vec_mult ( r2, obj->pos, tmp[0] );
Matrix_copy ( r2, tmp_mat );
Matrix_set_trans ( tmp_mat, tmp[0] );
Matrix_vec_multn ( tmp_mat, uvert1, tmp, 17 );
Camera_project_points ( tmp, p2, 17 );