/*
Copyright (C) 2018-2019 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 "entityFactory.h"

static void addEntityDef(char *name, Entity *(*initFunc)(void));
static Entity *initGenericEvilBlob(void);
static Entity *initGenericEyeDroid(void);

static EntityDef head;
static EntityDef *tail;

void initEntityFactory(void)
{
	memset(&head, 0, sizeof(EntityDef));
	tail = &head;

	addEntityDef("AquaBlob", initAquaBlob);
	addEntityDef("PistolBlob", initPistolBlob);
	addEntityDef("PistolEyeDroid", initPistolDroid);
	addEntityDef("GenericEvilBlob", initGenericEvilBlob);
	addEntityDef("GenericEyeDroid", initGenericEyeDroid);
	addEntityDef("MachineGunBlob", initMachineGunBlob);
	addEntityDef("MachineGunEyeDroid", initMachineGunDroid);
	addEntityDef("GrenadeBlob", initGrenadeBlob);
	addEntityDef("GrenadeEyeDroid", initGrenadeDroid);
	addEntityDef("ShotgunBlob", initShotgunBlob);
	addEntityDef("ShotgunEyeDroid", initShotgunDroid);
	addEntityDef("LaserBlob", initLaserBlob);
	addEntityDef("LaserEyeDroid", initLaserDroid);
	addEntityDef("SpreadGunBlob", initSpreadGunBlob);
	addEntityDef("SpreadGunEyeDroid", initSpreadGunDroid);
	addEntityDef("PlasmaEyeDroid", initPlasmaDroid);
	addEntityDef("PlasmaBlob", initPlasmaBlob);
	addEntityDef("Cannon", initCannon);
	addEntityDef("Blaze", initBlaze);
	addEntityDef("Frost", initFrost);
	addEntityDef("EyeDroidCommander", initEyeDroidCommander);
	addEntityDef("TankCommander", initTankCommander);

	addEntityDef("Bob", initBob);
	addEntityDef("MIA", initMIA);
	addEntityDef("Teeka", initTeeka);

	addEntityDef("Item", initItem);
	addEntityDef("BronzeKey", initBronzeKey);
	addEntityDef("SilverKey", initSilverKey);
	addEntityDef("GoldKey", initGoldKey);
	addEntityDef("GreenKeycard", initGreenKeycard);
	addEntityDef("BlueKeycard", initBlueKeycard);
	addEntityDef("RedKeycard", initRedKeycard);
	addEntityDef("YellowKeycard", initYellowKeycard);
	addEntityDef("WhiteKeycard", initWhiteKeycard);
	addEntityDef("WeaponPickup", initWeaponPickup);

	addEntityDef("Cell", initCell);
	addEntityDef("Heart", initHeart);

	addEntityDef("Exit", initExit);
	addEntityDef("PowerPool", initPowerPool);
	addEntityDef("Teleporter", initTeleporter);
	addEntityDef("PressurePlate", initPressurePlate);
	addEntityDef("InfoPoint", initInfoPoint);
	addEntityDef("PowerPoint", initPowerPoint);
	addEntityDef("PushBlock", initPushBlock);
	addEntityDef("Lift", initLift);
	addEntityDef("Door", initDoor);
	addEntityDef("BronzeDoor", initBronzeDoor);
	addEntityDef("SilverDoor", initSilverDoor);
	addEntityDef("GoldDoor", initGoldDoor);
	addEntityDef("HorizontalDoor", initHorizontalDoor);
	addEntityDef("CardReader", initCardReader);
	addEntityDef("LaserTrap", initLaserTrap);
	addEntityDef("HorizontalLaserTrap", initHorizontalLaserTrap);
	addEntityDef("Exit", initExit);
	addEntityDef("Destructable", initDestructable);
	addEntityDef("ItemPad", initItemPad);
}

Entity *createEntity(char *name)
{
	EntityDef *def;

	for (def = head.next ; def != NULL ; def = def->next)
	{
		if (strcmp(def->name, name) == 0)
		{
			SDL_LogMessage(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_DEBUG, "Creating '%s'", name);
			return def->initFunc();
		}
	}

	SDL_LogMessage(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_ERROR, "No such entity definition '%s'", name);
	exit(1);

	return NULL;
}

static void addEntityDef(char *name, Entity *(*initFunc)(void))
{
	EntityDef *def;

	def = malloc(sizeof(EntityDef));
	memset(def, 0, sizeof(EntityDef));
	tail->next = def;
	tail = def;

	STRNCPY(def->name, name, MAX_NAME_LENGTH);
	def->initFunc = initFunc;
}

static Entity *initGenericEvilBlob(void)
{
	int r;
	char name[MAX_NAME_LENGTH];
	strcpy(name, "");

	r = rand() % world.numEnemyTypes;

	sprintf(name, "%sBlob", world.enemyTypes[r]);

	return createEntity(name);
}

static Entity *initGenericEyeDroid(void)
{
	int r;
	char name[MAX_NAME_LENGTH];
	strcpy(name, "");

	r = rand() % world.numEnemyTypes;

	sprintf(name, "%sEyeDroid", world.enemyTypes[r]);

	return createEntity(name);
}