183 lines
3.1 KiB
C
183 lines
3.1 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 "entities.h"
|
|
|
|
void animateEntity(void);
|
|
static void applyDamage(int damage);
|
|
|
|
Entity *createEntity(void)
|
|
{
|
|
Entity *e;
|
|
|
|
e = malloc(sizeof(Entity));
|
|
memset(e, 0, sizeof(Entity));
|
|
world.entityTail->next = e;
|
|
world.entityTail = e;
|
|
|
|
e->uniqueId = game.entityCounter++;
|
|
|
|
return e;
|
|
}
|
|
|
|
void initEntity(Entity *e)
|
|
{
|
|
e->sprite[0] = e->sprite[1] = e->sprite[2] = -1;
|
|
|
|
e->environment = ENV_AIR;
|
|
e->alive = ALIVE_ALIVE;
|
|
|
|
e->isOnGround = 0;
|
|
e->isSolid = 0;
|
|
e->isStatic = 0;
|
|
e->isMissionTarget = 0;
|
|
|
|
e->health = e->healthMax = 1;
|
|
|
|
e->facing = FACING_LEFT;
|
|
|
|
e->spriteFrame = -1;
|
|
e->spriteTime = 0;
|
|
|
|
e->dx = e->dy = 0;
|
|
|
|
e->flags = 0;
|
|
|
|
e->owner = NULL;
|
|
|
|
e->thinkTime = 0;
|
|
|
|
e->plane = PLANE_BACKGROUND;
|
|
|
|
e->animate = animateEntity;
|
|
e->applyDamage = applyDamage;
|
|
}
|
|
|
|
SDL_Rect *getEntityBounds(Entity *e)
|
|
{
|
|
e->bounds.x = e->x;
|
|
e->bounds.y = e->y;
|
|
e->bounds.w = e->w;
|
|
e->bounds.h = e->h;
|
|
|
|
return &e->bounds;
|
|
}
|
|
|
|
int getCurrentEntitySprite(Entity *e)
|
|
{
|
|
if (e->alive == ALIVE_ALIVE)
|
|
{
|
|
return e->sprite[e->facing];
|
|
}
|
|
|
|
return e->sprite[FACING_DIE];
|
|
}
|
|
|
|
void animateEntity(void)
|
|
{
|
|
Sprite *spr;
|
|
|
|
if (self->spriteTime != -1)
|
|
{
|
|
self->spriteTime--;
|
|
|
|
if (self->spriteTime <= 0)
|
|
{
|
|
spr = getSpriteByIndex(getCurrentEntitySprite(self));
|
|
self->spriteFrame = wrap(self->spriteFrame + 1, 0, 1);
|
|
self->spriteTime = 0;
|
|
self->w = spr->w;
|
|
self->h = spr->h;
|
|
}
|
|
}
|
|
}
|
|
|
|
void setEntitySize(Entity *e)
|
|
{
|
|
Sprite *spr;
|
|
|
|
spr = getSpriteByIndex(getCurrentEntitySprite(e));
|
|
e->w = spr->w;
|
|
e->h = spr->h;
|
|
}
|
|
|
|
float bounce(Entity *e, float x)
|
|
{
|
|
if (!(e->flags & EF_BOUNCES))
|
|
{
|
|
return 0;
|
|
}
|
|
else if (e->flags & EF_FRICTIONLESS)
|
|
{
|
|
return -x;
|
|
}
|
|
|
|
x = -x * FRICTION;
|
|
|
|
if (x > -1 && x < 1)
|
|
{
|
|
e->flags &= ~EF_BOUNCES;
|
|
x = 0;
|
|
}
|
|
|
|
return x;
|
|
}
|
|
|
|
void teleport(Entity *e, float tx, float ty)
|
|
{
|
|
e->tx = tx;
|
|
e->ty = ty;
|
|
|
|
e->flags |= EF_TELEPORTING;
|
|
|
|
addTeleportStars(e);
|
|
}
|
|
|
|
void activateEntities(char *names, int activate)
|
|
{
|
|
}
|
|
|
|
static void applyDamage(int damage)
|
|
{
|
|
if (self->health < 0)
|
|
{
|
|
self->health = 0;
|
|
self->alive = ALIVE_ALIVE;
|
|
}
|
|
|
|
self->health -= damage;
|
|
|
|
if (self->health > 0)
|
|
{
|
|
self->thinkTime = 0;
|
|
|
|
self->facing = self->x < world.bob->x ? FACING_RIGHT : FACING_LEFT;
|
|
|
|
if (self->isMissionTarget && rand() % 10 == 0)
|
|
{
|
|
self->action = unitReappear;
|
|
self->flags |= EF_GONE;
|
|
self->thinkTime = rand() % FPS;
|
|
addTeleportStars(self);
|
|
playSound(SND_APPEAR, CH_ANY);
|
|
}
|
|
}
|
|
}
|