162 lines
3.0 KiB
C
162 lines
3.0 KiB
C
/*
|
|
Copyright (C) 2018 Parallel Realities
|
|
|
|
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 "teeka.h"
|
|
|
|
static void tick(void);
|
|
static void lookForEnemies(void);
|
|
static void preFire(void);
|
|
static void attack(void);
|
|
|
|
static Entity *target;
|
|
static int aimedSprite;
|
|
static int exitMission;
|
|
|
|
void initTeeka(Entity *e)
|
|
{
|
|
e->type = ET_TEEKA;
|
|
|
|
aimedSprite = getSpriteIndex("AimedShot");
|
|
|
|
e->flags |= EF_IMMUNE;
|
|
|
|
e->action = lookForEnemies;
|
|
|
|
e->weaponType = WPN_AIMED_PISTOL;
|
|
|
|
e->sprite[FACING_LEFT] = getSpriteIndex("TeekaLeft");
|
|
e->sprite[FACING_RIGHT] = getSpriteIndex("TeekaRight");
|
|
e->sprite[FACING_DIE] = getSpriteIndex("TeekaLeft");
|
|
|
|
e->health = e->healthMax = 9999;
|
|
|
|
e->tick = tick;
|
|
}
|
|
|
|
static void tick(void)
|
|
{
|
|
self->health = self->healthMax = 9999;
|
|
|
|
if (target != NULL)
|
|
{
|
|
self->facing = (target->x < self->x) ? FACING_LEFT : FACING_RIGHT;
|
|
|
|
if (target->alive == ALIVE_DEAD)
|
|
{
|
|
target = NULL;
|
|
|
|
self->action = lookForEnemies;
|
|
}
|
|
}
|
|
|
|
unitTick();
|
|
}
|
|
|
|
static void lookForEnemies(void)
|
|
{
|
|
Entity *e;
|
|
float distance, range;
|
|
|
|
self->thinkTime = rrnd(FPS / 2, FPS);
|
|
|
|
target = NULL;
|
|
|
|
distance = 800;
|
|
|
|
for (e = world.entityHead.next ; e != NULL ; e = e->next)
|
|
{
|
|
if (e->type == ET_ENEMY)
|
|
{
|
|
range = getDistance(self->x, self->y, e->x, e->y);
|
|
|
|
if (range < distance)
|
|
{
|
|
if (hasLineOfSight(self, e))
|
|
{
|
|
target = e;
|
|
distance = range;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (target != NULL)
|
|
{
|
|
self->shotsToFire = rrnd(3, 5);
|
|
|
|
self->action = preFire;
|
|
}
|
|
else if (exitMission)
|
|
{
|
|
addTeleportStars(self);
|
|
self->alive = ALIVE_DEAD;
|
|
playSound(SND_APPEAR, CH_ANY);
|
|
}
|
|
else
|
|
{
|
|
self->facing = rand() % 2 == 0 ? FACING_LEFT : FACING_RIGHT;
|
|
}
|
|
}
|
|
|
|
static void preFire(void)
|
|
{
|
|
if (self->reload > 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (target->y < self->y && self->isOnGround && rand() % 10 == 0)
|
|
{
|
|
self->dy = JUMP_POWER;
|
|
}
|
|
|
|
attack();
|
|
|
|
self->shotsToFire--;
|
|
|
|
if (self->shotsToFire == 0)
|
|
{
|
|
self->thinkTime = FPS;
|
|
}
|
|
}
|
|
|
|
static void attack(void)
|
|
{
|
|
Entity *bullet;
|
|
float dx, dy;
|
|
|
|
getSlope(target->x, target->y, self->x, self->y, &dx, &dy);
|
|
|
|
bullet = createBaseBullet(self);
|
|
bullet->x = self->x;
|
|
bullet->y = (self->y + self->h / 2) - 3;
|
|
bullet->facing = self->facing;
|
|
bullet->damage = 1;
|
|
bullet->owner = self;
|
|
bullet->health = FPS * 3;
|
|
bullet->weaponType = WPN_AIMED_PISTOL;
|
|
bullet->dx = dx * 9;
|
|
bullet->dy = dy * 9;
|
|
bullet->sprite[0] = bullet->sprite[1] = aimedSprite;
|
|
bullet->health *= 2;
|
|
|
|
self->reload = 5;
|
|
}
|