grafika_komputerowa/grk/project/Enemy.h

#include "glm.hpp"
#include "ext.hpp"
#include "src/Render_Utils.h"
#include "Bullet.h"
#include "Spaceship.h"

#pragma once
class Enemy
{	
private:
    std::list<Bullet*> bullets;
    float lastShootTime = 0.f;
    float shootInterval = 0.3f;

public:
	glm::mat4 modelMatrix;
	int hp;
	int initialHp;
	int dmg;
	float aggroRange;

	Enemy(int currHp,int initialHp, glm::mat4 initialModelMatrix, int initialDmg, float initialAggroRange)
		: hp(currHp), initialHp(initialHp), modelMatrix(initialModelMatrix), dmg(initialDmg), aggroRange(initialAggroRange)
	{}

	
	virtual ~Enemy() = default;

    virtual void attack(const glm::vec3& shipPos, float time) {
 
		if (isInAggroRange(shipPos)) {
			requestShoot(time);
		}
    }

    virtual bool isAlive() const {
        if (this->hp < 0) {
            return false;
        }
        return true;
    }

    virtual bool isInAggroRange(const glm::vec3& shipPos) const {
		float distanceFromShip = glm::length(shipPos - glm::vec3(this->modelMatrix[3]));
		if (distanceFromShip > this->aggroRange) {
			return false;
		}
		return true;
    }

	void renderBullets(float time, GLuint program) {
		for (auto it = bullets.begin(); it != bullets.end();) {
			Bullet* bullet = *it;

			if (bullet->shouldBeDestroyed(time, program)) {
				delete bullet;
				it = bullets.erase(it);
			}
			else {
				it++;
			}
		}
	}
private:
	void requestShoot(float time) {
		if (canShoot(time)) {
			shoot(time);
		}
	}

	bool canShoot(float time) {
		return this->lastShootTime == 0 || time - this->lastShootTime > this->shootInterval;
	}

	void shoot(float time) {
		Spaceship* spaceship = Spaceship::getInstance();
		glm::vec3 bulletDirection = glm::normalize(spaceship->spaceshipPos - glm::vec3(modelMatrix[3]));
		this->bullets.push_back(Bullet::createSimpleBullet(bulletDirection, this->modelMatrix[3], time));
		this->lastShootTime = time;
	}
};