1 files changed, 109 insertions, 0 deletions
diff --git a/game/enemy/EnemyScript.cpp b/game/enemy/EnemyScript.cpp
new file mode 100644
index 0000000..2bdab2c
--- /dev/null
+++ b/game/enemy/EnemyScript.cpp
@@ -0,0 +1,109 @@
+#include "../Config.h"
+#include "EnemyScript.h"
+#include <crepe/api/Animator.h>
+#include <crepe/api/ParticleEmitter.h>
+#include <crepe/api/BoxCollider.h>
+#include <crepe/api/AI.h>
+#include <crepe/api/Rigidbody.h>
+#include <crepe/api/Transform.h>
+#include <crepe/types.h>
+#include <random>
+#include "../Random.h"
+using namespace crepe;
+using namespace std;
+EnemyScript::EnemyScript(){
+	engine.seed(rd());
+	this->last_fired = std::chrono::steady_clock::now();
+	this->shot_delay = std::chrono::duration<float>(2.5 + Random::f(0,1));
+}
+void EnemyScript::init(){
+	Metadata& meta = this->get_component<Metadata>();
+	this->subscribe<SpawnEnemyEvent>([this](const SpawnEnemyEvent& e) -> bool{
+		return this->spawn_enemy(e);
+	},meta.game_object_id);
+	this->subscribe<CollisionEvent>([this](const CollisionEvent& e) -> bool {
+		return this->on_collide(e);
+	});
+};
+void EnemyScript::fixed_update(duration_t dt) {
+	if(this->alive){
+		return;
+	}
+    Transform& transform = this->get_component<Transform>();
+    Transform& player_transform = this->get_components_by_name<Transform>("player").front();
+	Rigidbody& enemy_body = this->get_component<Rigidbody>();
+    AI& ai_component = this->get_component<AI>();
+	
+	//transform.position += enemy_body.data.linear_velocity * dt.count();
+    float direction_to_player_y = player_transform.position.y - transform.position.y;
+	float distance_to_player_y = std::abs(direction_to_player_y);
+
+	float adjustment_speed = speed * (distance_to_player_y / MAX_DISTANCE);
+
+	adjustment_speed = std::clamp(adjustment_speed, MIN_SPEED, MAX_SPEED);
+	// Move the path nodes on the Y-axis
+	for (vec2& path_node : ai_component.path) {
+		path_node.y += (direction_to_player_y > 0 ? 1 : -1) * adjustment_speed * dt.count();
+	}
+	//bullet fire logic:
+	auto now = std::chrono::steady_clock::now();
+    std::chrono::duration<float> elapsed = now - last_fired;
+	if (elapsed > shot_delay) {
+    	this->shoot(transform.position,0);
+		last_fired = now;
+		this->shot_delay = std::chrono::duration<float>(Random::f(0.8,4));
+	}
+
+}
+bool EnemyScript::spawn_enemy(const SpawnEnemyEvent& e){
+	this->speed = e.speed;
+	AI& ai_component = this->get_component<AI>();
+	Transform& transform = this->get_component<Transform>();
+	Camera& camera = this->get_components_by_name<Camera>("camera").front();
+	Transform& cam_transform = this->get_components_by_name<Transform>("camera").front();
+
+	vec2 half_screen = camera.viewport_size / 2;
+	float x_value = cam_transform.position.x + half_screen.x - 50 * (1 + e.column);  
+		uniform_real_distribution<float> dist(
+		cam_transform.position.y - half_screen.y + 100,
+		cam_transform.position.y + half_screen.y - 100
+		);
+	float random_height = dist(engine);
+	vec2 spawn_location = {cam_transform.position.x + camera.viewport_size.x / 2 + 100,random_height};
+	transform.position = spawn_location;
+	// transform.position = vec2{cam_transform}
+	ai_component.path.clear();
+	ai_component.make_oval_path(10, 10, vec2{x_value,random_height}, 1.5708, true);
+	ai_component.active = true;
+	return true;
+}
+
+bool EnemyScript::on_collide(const CollisionEvent & e){
+	if(e.info.other.metadata.tag == "player_bullet"){
+		this->despawn_enemy();
+	}
+	return false;
+}
+void EnemyScript::despawn_enemy(){
+	Transform& transform = this->get_component<Transform>();
+	transform.position = vec2{0,-650};
+	AI& ai_component = this->get_component<AI>();
+	// Rigidbody& enemy_body
+	ai_component.active = false;
+}
+void EnemyScript::shoot(const vec2& location,float angle){
+	RefVector<Transform> bullet_transforms = this->get_components_by_tag<Transform>("enemy_bullet");
+
+	for(Transform& bullet_pos : bullet_transforms){
+		if(bullet_pos.position.x == 0 && bullet_pos.position.y == -750){
+
+			bullet_pos.position = location;
+			bullet_pos.position.x -= 20;
+			Rigidbody& bullet_body = this->get_components_by_id<Rigidbody>(bullet_pos.game_object_id).front();
+			BoxCollider bullet_collider = this->get_components_by_id<BoxCollider>(bullet_pos.game_object_id).front();
+			bullet_collider.active = true;
+			bullet_body.active = true;
+			return;
+		}
+	}
+}