tbftss/src/battle/entities.c

/*
Copyright (C) 2015 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"

static void drawEntity(Entity *e);
static void doEntity(Entity *e, Entity *prev);

void doEntities(void)
{
	Entity *e, *prev;
	
	prev = &battle.entityHead;
	
	battle.numAllies = battle.numEnemies = 0;
	
	for (e = battle.entityHead.next ; e != NULL ; e = e->next)
	{
		self = e;
		
		switch (e->type)
		{
			case ET_FIGHTER:
				doFighter(e, prev);
				break;
				
			default:
				doEntity(e, prev);
				break;
		}
	}
}

static void doEntity(Entity *e, Entity *prev)
{
	e->x += e->dx;
	e->y += e->dy;
	
	e->x -= battle.ssx;
	e->y -= battle.ssy;
	
	if (e->action != NULL)
	{
		if (--e->thinkTime <= 0)
		{
			e->action();
		}
	}
	
	if (e->health <= 0)
	{
		if (e == battle.entityTail)
		{
			battle.entityTail = prev;
		}
		
		prev->next = e->next;
		free(e);
		e = prev;
	}
	
	prev = e;
}

void drawEntities(void)
{
	Entity *e;
	
	for (e = battle.entityHead.next ; e != NULL ; e = e->next)
	{
		switch (e->type)
		{
			case ET_FIGHTER:
				drawFighter(e);
				break;
				
			default:
				drawEntity(e);
				break;
		}
	}
}

static void drawEntity(Entity *e)
{
	blitRotated(e->texture, e->x, e->y, e->angle);
}