#include "scene.hpp"

#include "interpolation.hpp"
#include "bat.hpp"
#include "dragon.hpp"
#include "terrain.hpp"
#include "projectile.hpp"
#include "sapin.hpp"
#include "settings.hpp"

using namespace cgp;

void scene_structure::initialize()
{
	//CAMERA
	camera_control.initialize(inputs, window); // Give access to the inputs and window global state to the camera controler

	
	//First person
	camera_control.camera_model.position_camera = { 0,0,evaluate_terrain_height(0,0)+10};
	camera_control.camera_model.set_rotation_axis({ 0,0,1 });
	global_frame.initialize_data_on_gpu(mesh_primitive_frame());

	
	//SKYBOX
	//skybox_debug.png for debugging
	image_structure image_skybox_template = image_load_file("assets/skybox2.jpg");
	std::vector<image_structure> image_grid = image_split_grid(image_skybox_template, 4, 3);

	image_structure image_skybox_template2 = image_load_file("assets/skyboxNight.jpeg");
	std::vector<image_structure> image_grid2 = image_split_grid(image_skybox_template2, 4, 3);

	skybox.initialize_data_on_gpu();
	//x neg, x pos, y neg, y pos, z neg, z pos
	skybox.texture.initialize_cubemap_on_gpu(image_grid[7].rotate_90_degrees_counterclockwise(), image_grid[1].rotate_90_degrees_clockwise(), image_grid[4].rotate_90_degrees_clockwise().rotate_90_degrees_clockwise(), image_grid[10], image_grid[3], image_grid[5].rotate_90_degrees_clockwise().rotate_90_degrees_clockwise());
	skybox.texture2.initialize_cubemap_on_gpu(image_grid2[7].rotate_90_degrees_counterclockwise(), image_grid2[1].rotate_90_degrees_clockwise(), image_grid2[4].rotate_90_degrees_clockwise().rotate_90_degrees_clockwise(), image_grid2[10], image_grid2[3], image_grid2[5].rotate_90_degrees_clockwise().rotate_90_degrees_clockwise());
	

	//TERRAIN
	int N_terrain_samples = 500;
	mesh const terrain_mesh = create_terrain_mesh(N_terrain_samples);
	terrain.initialize_data_on_gpu(terrain_mesh);
	// terrain.material.color = { 0.6f,0.85f,0.5f }; terrain de couleur de base verte
	terrain.material.color = { 1,1,1 };
	terrain.material.phong.specular = 0.0f; // non-specular terrain material

	terrain.shader.load(project::path + "shaders/mesh_multi_texture/mesh_multi_texture.vert.glsl", project::path + "shaders/mesh_multi_texture/mesh_multi_texture.frag.glsl");
	terrain.texture.load_and_initialize_texture_2d_on_gpu(project::path + "assets/grass.jpg",
		GL_REPEAT,
		GL_MIRRORED_REPEAT);
	terrain.supplementary_texture["image_texture_rock"].load_and_initialize_texture_2d_on_gpu(project::path + "assets/rocks3.jpg",
		GL_REPEAT,
		GL_MIRRORED_REPEAT);
	terrain.supplementary_texture["image_texture_snow"].load_and_initialize_texture_2d_on_gpu(project::path + "assets/snow.jpg",
		GL_REPEAT,
		GL_MIRRORED_REPEAT);

	//OBJECTS

	//GRASS
	grass_position = generate_positions_on_terrain(num_grass());
	mesh quadrangle_mesh;  
	quadrangle_mesh.position = { {0,0,0},{1, 0, 0}, {1,0,1},  {0, 0,1} };
	quadrangle_mesh.uv = { {0,0},{1,0}, {1,1}, {0,1} };
	quadrangle_mesh.connectivity = { {0,1,2}, {0,2,3} };
	quadrangle_mesh.fill_empty_field(); // (fill with some default values the other buffers (colors, normals) that we didn't filled before)
	// Convert the mesh structure into a mesh_drawable structure
	grass.initialize_data_on_gpu(quadrangle_mesh);
	grass.texture.load_and_initialize_texture_2d_on_gpu(project::path + "assets/grass.png",
		GL_CLAMP_TO_BORDER,
		GL_CLAMP_TO_BORDER);

	//CROSSHAIR
	mesh crosshair_mesh;
	crosshair_mesh.position = { {-1,-1,-1},{1, -1, -1}, {1,-1,1},  {-1, -1, 1} };
	for (int i = 0; i < 4; i++) crosshair_mesh.position[i] *= 0.05f;
	crosshair_mesh.uv = { {0,0},{1,0}, {1,1}, {0,1} };
	crosshair_mesh.connectivity = { {0,1,2}, {0,2,3} };
	crosshair_mesh.fill_empty_field();
	crosshair.initialize_data_on_gpu(crosshair_mesh);
	crosshair.texture.load_and_initialize_texture_2d_on_gpu(project::path + "assets/crosshair.png", GL_CLAMP_TO_BORDER, GL_CLAMP_TO_BORDER);


	//BATS & DRAGONS
	bats.initialize_bats();
	dragons.initialize_dragons();

	vec3 bat_pos1 = { 0,0,evaluate_terrain_height(0,0) + 20 };
	float bat_size1 = 0.2f;
	numarray<vec3> bat_keypos1 = { {-1,1,0}, {0,1,0}, {1,1,0}, {1,2,0}, {2,2,0}, {2,2,1}, {2,0,1.5}, {1.5,-1,1}, {1.5,-1,0}, {1,-1,0}, {0,-0.5,0}, {-1,1,0} };
	numarray<float> bat_keytimes1 = { 0.0f, 1.0f, 2.0f, 2.5f, 3.0f, 3.5f, 3.75f, 4.5f, 5.0f, 6.0f, 7.0f, 8.0f };
	bats.add_bat(bat_pos1, bat_size1, bat_keypos1, bat_keytimes1);
	
	vec3 dragon_pos = { 5,5,evaluate_terrain_height(0,0) + 10 };
	float dragon_size = 0.5f;
	numarray<vec3> dragon_keypos = { {terrain_length()/2, terrain_length() / 2, evaluate_terrain_height(terrain_length() / 2,terrain_length() / 2)},  {-2,0,0}, {-1.6,1,0}, {-1.3,1.3,0}, {-0.8,1.8,0}, {0,2,0}, {0.8,1.8,0}, {1.3,1.3,0}, {1.6,1,0}, {2,0,0}, {1.3,-1.3,0}, {0,-2,0}, {-1.3,-1.3,0}};
	numarray<float> dragon_keytimes = { 0.0f, 10.0f, 11.0f, 12.0f, 12.5f, 13.0f, 13.5f, 13.75f, 14.5f, 15.0f, 16.0f, 17.0f, 18.0f };
	dragons.add_dragon(dragon_pos, dragon_size, dragon_keypos, dragon_keytimes);
	
	//PROJECTILES
	projectiles.initialize();

	//PROJECTILE MENU
	menu_icons.resize(5);
	image_structure electroball = image_split_grid(image_load_file("assets/electroball.png"), 4, 2)[5];
	std::vector<image_structure> icons = { projectiles.fire_grid[0], projectiles.ice_grid[3], projectiles.rock_grid[0], electroball, projectiles.water_grid[0] };
	mesh menu_icon_mesh;
	menu_icon_mesh.position = { {-1,-1,-1},{1, -1, -1}, {1,-1,1},  {-1, -1, 1} };
	float factor = 0.2f;
	for (int i = 0; i < 4; i++) menu_icon_mesh.position[i] = menu_icon_mesh.position[i] * factor - vec3{ 1 - factor, 0, 1 - 2*factor } + vec3{ 0.04,0,0 };
	menu_icon_mesh.uv = { {0,0},{1,0}, {1,1}, {0,1} };
	menu_icon_mesh.connectivity = { {0,1,2}, {0,2,3} };
	menu_icon_mesh.fill_empty_field();

	menu_frame.initialize_data_on_gpu(menu_icon_mesh);
	menu_frame.texture.load_and_initialize_texture_2d_on_gpu(project::path + "assets/select_rect.png", GL_CLAMP_TO_BORDER, GL_CLAMP_TO_BORDER);

	for (int i = 0; i < 4; i++) menu_icon_mesh.position[i] -= vec3{ 0.04,0,0 };

	for (int icon = 0; icon < 5; icon++) {
		menu_icons[icon].initialize_data_on_gpu(menu_icon_mesh);
		menu_icons[icon].texture.initialize_texture_2d_on_gpu(icons[icon], GL_CLAMP_TO_BORDER, GL_CLAMP_TO_BORDER);
		for (int i = 0; i < 4; i++) menu_icon_mesh.position[i] += vec3{ 2.2 * factor, 0, 0 };
	}

	//SAPIN
	tree_position = generate_positions_on_terrain(num_trees());
	sapin1.initialize_sapin();
	sapin1.sapin["Trunk"].transform_local.rotation = rotation_transform::from_axis_angle({ 1,0,0 }, Pi / 2);

	//Initialise hitbox sphere (PLEASE STORE THE HITBOX_SPHERE IN HITBOX!!!)
	hitbox_sphere.initialize_data_on_gpu(mesh_primitive_sphere(1));

	//HEALTHBAR
	mesh background_mesh = mesh_primitive_quadrangle({ 0,0,0 }, { 1.1, 0, 0 }, { 1.1,0,0.4 }, { 0, 0,0.4 });
	mesh death_mesh = mesh_primitive_quadrangle({ 0.05,-0.005,0.05 }, { 1.05, -0.005, 0.05 }, { 1.05,-0.005,0.35 }, { 0.05, -0.005,0.35 });
	mesh health_mesh = mesh_primitive_quadrangle({ 0.05,-0.01,0.05 }, { 1.05, -0.01, 0.05 }, { 1.05,-0.01,0.35 }, { 0.05, -0.01,0.35 });

	mesh_drawable background;
	background.initialize_data_on_gpu(background_mesh);

	mesh_drawable health;
	health.initialize_data_on_gpu(health_mesh);
	health.material.color = {0,1,0};

	mesh_drawable death;
	death.initialize_data_on_gpu(death_mesh);
	death.material.color = { 1,0,0 };
	
	healthbar.add(background, "Background");
	healthbar.add(health, "Health", "Background");
	healthbar.add(death, "Death", "Background");


	//SMOKE
	image_structure smoke_animation;
	smoke_animation = image_load_file("assets/smoke.png");
	smoke_grid = image_split_grid(smoke_animation, 12, 6);
	cgp::mesh sphere_mesh = mesh_primitive_sphere(15);
	smoke.initialize_data_on_gpu(sphere_mesh);

	//DRAGON FIRE
	mesh fire_mesh = mesh_primitive_cone(3, 15, {0,0,0}, {-1,0,0}, false);
	image_structure fire_breath_animation;
	fire_breath_animation = image_load_file("assets/dragon/fire.png");
	fire_breath_grid = image_split_grid(fire_breath_animation, 6, 5);
	fire_breath.initialize_data_on_gpu(fire_mesh);
	fire_breath.material.color = {1,1,1};

}

void scene_structure::display_frame()
{
	// Update the current time
	timer.update();

	glDepthMask(GL_FALSE);
	draw(skybox, day_time(), environment);
	glDepthMask(GL_TRUE);  

	//Walk or Fly
	if (!gui.fly) {
		vec3 eye_level = camera_control.camera_model.position_camera;
		eye_level[2] = evaluate_terrain_height(eye_level[0], eye_level[1]) + 0.75;
		camera_control.camera_model.position_camera = eye_level;
	}

	// Default light (current position of camera)
	environment.light = camera_control.camera_model.position();

	if (gui.display_frame)
		draw(global_frame, environment);

	draw(terrain, environment);
	if (gui.display_wireframe)
		draw_wireframe(terrain, environment);


	//Trees with render distance
	for (int i = 0; i < num_trees(); i++) {
		if (norm(tree_position[i]-camera_control.camera_model.position_camera) < 75 ) {
			sapin1.sapin["Trunk"].transform_local.translation = tree_position[i];
			sapin1.sapin.update_local_to_global_coordinates();
			draw(sapin1.sapin, environment);
		}
	}

	display_bats();
	display_dragons();
	display_grass(); //Important to draw grass before projectiles (otherwise you see them through projectiles)
	display_projectiles();
	display_crosshair();
	if(camera_control.inputs->keyboard.is_pressed(GLFW_KEY_Q)) projectile_menu();
	
}

void scene_structure::display_bats()
{
	bats.update_mvt();

	for (int i = 0; i < bats.N; i++) {
		if (!bats.bats_prop[i].isdead) {
			//Wing animation
			bats.bat_mesh["Bat wing left1"].transform_local.rotation = rotation_transform::from_axis_angle({ 0,1,0 }, 0.5 * cos(5 * bats.bats_prop[i].timer_mvt.t));
			bats.bat_mesh["Bat wing right1"].transform_local.rotation = rotation_transform::from_axis_angle({ 0,1,0 }, -0.5 * cos(5 * bats.bats_prop[i].timer_mvt.t));
			//Rescale
			bats.bat_mesh["Bat base"].drawable.model.scaling = bats.bats_prop[i].size;
			bats.bat_mesh["Bat wing left1"].drawable.model.scaling = bats.bats_prop[i].size;
			bats.bat_mesh["Bat wing right1"].drawable.model.scaling = bats.bats_prop[i].size;
			//Make sure wings are at the right distance
			bats.bat_mesh["Bat wing left1"].transform_local.translation = { -0.25f * bats.bats_prop[i].size, 0, 0 };
			bats.bat_mesh["Bat wing right1"].transform_local.translation = { 0.25f * bats.bats_prop[i].size, 0, 0 };

			//Orientation and position of the bat along the path
			bats.bats_prop[i].rot = rotation_transform::from_vector_transform({ 0,-1,0 }, normalize(bats.bats_prop[i].pos_futur - bats.bats_prop[i].pos));
			bats.bat_mesh["Bat base"].transform_local.rotation = bats.bats_prop[i].rot;
			bats.bat_mesh["Bat base"].transform_local.translation = bats.bats_prop[i].pos;

			bats.bat_mesh.update_local_to_global_coordinates();
			draw(bats.bat_mesh, environment);
			display_healthbar(bats.bats_prop[i].hp, bats.bats_prop[i].max_hp, bats.bats_prop[i].pos);
			if (gui.display_wireframe) {
				draw_wireframe(bats.bat_mesh, environment);
			}

			if (gui.display_hitbox) {
				display_hitbox(bats.bats_prop[i].bat_hitbox, bats.bats_prop[i].pos, bats.bats_prop[i].rot);
			}
		}

		else{
			if (bats.bats_prop[i].death_time == -1) bats.bats_prop[i].death_time = timer.t;
			float since_death = timer.t - bats.bats_prop[i].death_time;
			if (since_death < 3) {
				display_death(bats.bats_prop[i].pos, bats.bats_prop[i].size * double(10+ since_death)/15, since_death*9);

				glEnable(GL_BLEND);
				glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
				glDepthMask(false);
				bats.bat_mesh["Bat base"].drawable.material.alpha = double(3 - since_death) / 4;
				bats.bat_mesh["Bat wing left1"].drawable.material.alpha = double(3 - since_death) / 4;
				bats.bat_mesh["Bat wing right1"].drawable.material.alpha = double(3 - since_death) / 4;
				bats.bat_mesh["Bat base"].transform_local.rotation = bats.bats_prop[i].rot;
				bats.bat_mesh["Bat base"].transform_local.translation = bats.bats_prop[i].pos;
				bats.bat_mesh.update_local_to_global_coordinates();
				draw(bats.bat_mesh, environment);
				// Don't forget to re-activate the depth-buffer write
				glDepthMask(true);
				glDisable(GL_BLEND);
			}
		}
	}
}

void scene_structure::display_dragons()
{
	dragons.update_mvt();

	for (int i = 0; i < dragons.N; i++) {
		if (!dragons.dragons_prop[i].isdead) {
			//Wing animation
			dragons.dragon_mesh["Dragon wing left"].transform_local.rotation = rotation_transform::from_axis_angle({ 1,0,0.5 }, 0.5 * cos(5 * dragons.dragons_prop[i].timer_mvt.t));
			dragons.dragon_mesh["Dragon wing right"].transform_local.rotation = rotation_transform::from_axis_angle({ 1,0,0.5 }, -0.5 * cos(5 * dragons.dragons_prop[i].timer_mvt.t));
			//Mouth animation
			dragons.dragon_mesh["Dragon mouth"].transform_local.rotation = rotation_transform::from_axis_angle({ 0,1,0 }, 0.05 * cos(dragons.dragons_prop[i].timer_mvt.t));
			
			//Start shooting fire at random if mouth open with proba 1/10 because it's calculated in every frame
			if (!dragons.dragons_prop[i].isfiring && cos(dragons.dragons_prop[i].timer_mvt.t) < -0.8) {
				if (rand_interval(0, 1) < 1.0/10) {
					dragons.dragons_prop[i].isfiring = true;
					dragons.dragons_prop[i].time_fire = 0;
				}
			}
			
			//Tail animation
			dragons.dragon_mesh["Dragon tailmiddle"].transform_local.rotation = rotation_transform::from_axis_angle({ 0,1,0.5 }, 0.05 * cos(2 * dragons.dragons_prop[i].timer_mvt.t));
			dragons.dragon_mesh["Dragon tailend"].transform_local.rotation = rotation_transform::from_axis_angle({ 0.5,1,0.5 }, -0.01 * cos(2 * dragons.dragons_prop[i].timer_mvt.t));
			//Rescale
			dragons.dragon_mesh["Dragon base"].drawable.model.scaling = dragons.dragons_prop[i].size;
			dragons.dragon_mesh["Dragon wing left"].drawable.model.scaling = dragons.dragons_prop[i].size;
			dragons.dragon_mesh["Dragon wing right"].drawable.model.scaling = dragons.dragons_prop[i].size;
			dragons.dragon_mesh["Dragon mouth"].drawable.model.scaling = dragons.dragons_prop[i].size;
			dragons.dragon_mesh["Dragon tailmiddle"].drawable.model.scaling = dragons.dragons_prop[i].size;
			dragons.dragon_mesh["Dragon tailend"].drawable.model.scaling = dragons.dragons_prop[i].size;
			//Make sure wings are at the right distance
			dragons.dragon_mesh["Dragon wing left"].transform_local.translation = { 0, -0.3f * dragons.dragons_prop[i].size, 0 };
			dragons.dragon_mesh["Dragon wing right"].transform_local.translation = { 0, 0.3f * dragons.dragons_prop[i].size, 0 };

			//Orientation and position of the bat along the path
			dragons.dragons_prop[i].rot = rotation_transform::from_vector_transform({ 1,0,0 }, normalize(dragons.dragons_prop[i].pos_futur - dragons.dragons_prop[i].pos));
			dragons.dragon_mesh["Dragon base"].transform_local.rotation = dragons.dragons_prop[i].rot;
			dragons.dragon_mesh["Dragon base"].transform_local.translation = dragons.dragons_prop[i].pos;

			dragons.dragon_mesh.update_local_to_global_coordinates();
			draw(dragons.dragon_mesh, environment);
			display_healthbar(dragons.dragons_prop[i].hp, dragons.dragons_prop[i].max_hp, dragons.dragons_prop[i].pos);
			if (gui.display_wireframe) {
				draw_wireframe(dragons.dragon_mesh, environment);
			}

			if (gui.display_hitbox) {
				display_hitbox(dragons.dragons_prop[i].dragon_hitbox, dragons.dragons_prop[i].pos, dragons.dragons_prop[i].rot);
			}

			//Shoot fire
			if (dragons.dragons_prop[i].isfiring) {
				if (dragons.dragons_prop[i].time_fire < dragons.dragons_prop[i].duration_fire) {
					display_fire_breath(dragons.dragons_prop[i].pos, dragons.dragons_prop[i].rot, dragons.dragons_prop[i].time_fire, dragons.dragons_prop[i].duration_fire);
					dragons.dragons_prop[i].time_fire++;
				}
				else dragons.dragons_prop[i].isfiring = false;
			}
		}

		else {
			if (dragons.dragons_prop[i].death_time == -1) dragons.dragons_prop[i].death_time = timer.t;
			float since_death = timer.t - dragons.dragons_prop[i].death_time;
			if (since_death < 3) {
				display_death(dragons.dragons_prop[i].pos, dragons.dragons_prop[i].size * 0.5 * double(10+ since_death)/15, since_death*9);
				glEnable(GL_BLEND);
				glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
				glDepthMask(false);
				dragons.dragon_mesh["Dragon base"].drawable.material.alpha = double(3 - since_death)/4;
				dragons.dragon_mesh["Dragon mouth"].drawable.material.alpha = double(3 - since_death)/4;
				dragons.dragon_mesh["Dragon wing left"].drawable.material.alpha = double(3 - since_death)/4;
				dragons.dragon_mesh["Dragon wing right"].drawable.material.alpha = double(3 - since_death)/4;
				dragons.dragon_mesh["Dragon tailmiddle"].drawable.material.alpha = double(3 - since_death)/4;
				dragons.dragon_mesh["Dragon tailend"].drawable.material.alpha = double(3 - since_death)/4;
				dragons.dragon_mesh["Dragon base"].transform_local.rotation = dragons.dragons_prop[i].rot;
				dragons.dragon_mesh["Dragon base"].transform_local.translation = dragons.dragons_prop[i].pos;
				dragons.dragon_mesh.update_local_to_global_coordinates();
				draw(dragons.dragon_mesh, environment);
				// Don't forget to re-activate the depth-buffer write
				glDepthMask(true);
				glDisable(GL_BLEND);
			}
		}
	}
}

void scene_structure::display_fire_breath(vec3 pos, rotation_transform rot, int t, int duration) {
	
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

	glDepthMask(false);
	fire_breath.texture.initialize_texture_2d_on_gpu(fire_breath_grid[5 * (t/15) + (t/3)%5], GL_REPEAT, GL_REPEAT);
	fire_breath.model.scaling_xyz = { double(t + 20) / (duration + 20),1,1 };
	fire_breath.model.rotation = rot;
	fire_breath.model.translation = pos + 20 * double(t + 20) / (duration + 20) * rot * vec3(1, 0, 0);
	draw(fire_breath, environment);

	glDepthMask(true);
	glDisable(GL_BLEND);
}

void scene_structure::display_hitbox(hitbox H, vec3 shift, rotation_transform rot) {
	for (int i = 0; i < H.N; i++) {
		hitbox_sphere.model.scaling = H.r[i];
		hitbox_sphere.model.translation = rot * H.center[i] + shift;
		draw_wireframe(hitbox_sphere, environment);
	}
}

void scene_structure::display_healthbar(int hp, int max_hp, vec3 pos) {
	auto const& camera = camera_control.camera_model;
	// Placement : towards camera
	healthbar["Background"].transform_local.translation = pos + (1 / norm(camera.position() - pos)) * (camera.position() - pos) + vec3(0,0,-0.5);
	// Health levels
	healthbar["Health"].drawable.model.scaling_xyz = { double(hp)/max_hp, 1, 1};
	// Healthbar facing camera
	rotation_transform R = rotation_transform::from_frame_transform({ 1,0,0 }, { 0,0,1 }, camera.right(), camera.up());
	healthbar["Background"].transform_local.rotation = R;

	healthbar.update_local_to_global_coordinates();
	draw(healthbar, environment);
}


void scene_structure::display_grass()
{
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glDepthMask(false);

	auto const& camera = camera_control.camera_model;

	vec3 const right = camera.right();
	
	for (int i = 0; i < num_grass(); i++) {
		grass.model.translation = grass_position[i];
		rotation_transform R = rotation_transform::from_frame_transform({ 1,0,0 }, { 0,0,1}, right, {0,0,1});
		grass.model.rotation = R;
		draw(grass, environment);
	}

	glDepthMask(true);
	glDisable(GL_BLEND);
}

void scene_structure::display_crosshair()
{
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glDepthMask(false);

	auto const& camera = camera_control.camera_model;
	
	crosshair.model.translation = camera.position_camera + camera.front();
	rotation_transform R = rotation_transform::from_frame_transform({ 1,0,0 }, { 0,0,1 }, camera.right(), camera.up());
	crosshair.model.rotation = R;
	draw(crosshair, environment);

	glDepthMask(true);
	glDisable(GL_BLEND);
}

void scene_structure::display_gui()
{
	ImGui::Checkbox("Frame", &gui.display_frame);
	ImGui::Checkbox("Wireframe", &gui.display_wireframe);
	ImGui::Checkbox("Hitbox", &gui.display_hitbox);
	ImGui::Checkbox("Fly", &gui.fly);

	ImGui::SliderFloat("K", &gui.k, 0.0f, 10.0f);
	ImGui::SliderFloat("Speed", &gui.speed, 0.0f, 10.0f);
}

void scene_structure::display_projectiles() {

	vec3 const right = camera_control.camera_model.right();
	rotation_transform R = rotation_transform::from_frame_transform({ cos(ball_turn_speed * timer.t + 90),sin(ball_turn_speed * timer.t + 90),0 }, { 0,0,1 }, right, { 0,0,1 });
	rotation_transform R2 = rotation_transform::from_frame_transform({ cos(ball_turn_speed * timer.t -90), sin(ball_turn_speed * timer.t - 90),0 }, { 0,0,1 }, right, { 0,0,1 });

	//Permet d'avoir une vitesse de jeu ind�pendante des fps, contrairement � timer.scale
	delta_sim_time = timer.t - prev_sim_time;
	prev_sim_time = timer.t;
	//Plus de pr�cision pour la collision
	int iter_num = 40;
	for(int iter=0; iter<iter_num; iter++){
		projectiles.simulate(delta_sim_time / iter_num);
		for (int i = 0; i < projectiles.N; i++) {
			if (projectiles.projectiles_prop[i].is_active) {
				for (int j = 0; j < bats.N; j++) {
					if (bats.bats_prop[j].bat_hitbox.is_in_hitbox(projectiles.projectiles_prop[i].pos, bats.bats_prop[j].pos, bats.bats_prop[j].rot)) {
						projectiles.projectiles_prop[i].is_active = false;
						bats.bats_prop[j].hp--;
						if (bats.bats_prop[j].hp == 0) bats.bats_prop[j].isdead = true;
					}
				}
				for (int j = 0; j < dragons.N; j++) {
					if (dragons.dragons_prop[j].dragon_hitbox.is_in_hitbox(projectiles.projectiles_prop[i].pos, dragons.dragons_prop[j].pos, dragons.dragons_prop[j].rot)) {
						projectiles.projectiles_prop[i].is_active = false;
						dragons.dragons_prop[j].hp--;
						if (dragons.dragons_prop[j].hp == 0) dragons.dragons_prop[j].isdead = true;
					}
				}
			}
		}
	}

	//Animation des projectiles en fonction du type
	for (int i = 0; i < projectiles.N; i++) {
		projectiles.mesh.model.translation = projectiles.projectiles_prop[i].pos;
		projectiles.mesh.material.color = projectiles.projectiles_prop[i].color;
		draw(projectiles.mesh, environment);


		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
		glDepthMask(false);
		
		if (projectiles.projectiles_prop[i].elemental_type == projectile::projectile_type::fire) {

			if (fmod(timer.t, ball_reset_speed) > 0.1) projectiles.projectiles_prop[i].change_animation = true;
			if (fmod(timer.t, ball_reset_speed) < 0.1 && projectiles.projectiles_prop[i].change_animation) {
				projectiles.projectiles_prop[i].change_animation = false;
				projectiles.fireball.texture.update(projectiles.fire_grid[std::rand()%12]);
			}

			projectiles.fireball.model.translation = projectiles.projectiles_prop[i].pos;
			draw(projectiles.fireball, environment);
			projectiles.fireball.model.rotation = R;
			draw(projectiles.fireball, environment);
			projectiles.fireball.model.rotation = R2;
			draw(projectiles.fireball, environment);

		}
		else if (projectiles.projectiles_prop[i].elemental_type == projectile::projectile_type::water) {

			if (fmod(timer.t, ball_reset_speed) > 0.1) projectiles.projectiles_prop[i].change_animation = true;
			if (fmod(timer.t, ball_reset_speed) < 0.1 && projectiles.projectiles_prop[i].change_animation) {
				projectiles.projectiles_prop[i].change_animation = false;
				projectiles.waterball.texture.update(projectiles.water_grid[std::rand() % 6]);
			}

			projectiles.waterball.model.translation = projectiles.projectiles_prop[i].pos;
			draw(projectiles.waterball, environment);
			projectiles.waterball.model.rotation = R;
			draw(projectiles.waterball, environment);
			projectiles.waterball.model.rotation = R2;
			draw(projectiles.waterball, environment);

		}
		else if (projectiles.projectiles_prop[i].elemental_type == projectile::projectile_type::ice) {

			if (fmod(timer.t, ball_reset_speed) > 0.1) projectiles.projectiles_prop[i].change_animation = true;
			if (fmod(timer.t, ball_reset_speed) < 0.1 && projectiles.projectiles_prop[i].change_animation) {
				projectiles.projectiles_prop[i].change_animation = false;
				projectiles.iceball.texture.update(projectiles.ice_grid[std::rand() % 6]);
			}

			projectiles.iceball.model.translation = projectiles.projectiles_prop[i].pos;
			draw(projectiles.iceball, environment);
			projectiles.iceball.model.rotation = R;
			draw(projectiles.iceball, environment);
			projectiles.iceball.model.rotation = R2;
			draw(projectiles.iceball, environment);

		}
		else if (projectiles.projectiles_prop[i].elemental_type == projectile::projectile_type::electric) {

			projectiles.electroball.model.translation = projectiles.projectiles_prop[i].pos;
			draw(projectiles.electroball, environment);
			projectiles.electroball.model.rotation = R;
			draw(projectiles.electroball, environment);
			projectiles.electroball.model.rotation = R2;
			draw(projectiles.electroball, environment);

		}
		else if (projectiles.projectiles_prop[i].elemental_type == projectile::projectile_type::rock) {

			projectiles.rockball.model.translation = projectiles.projectiles_prop[i].pos;
			draw(projectiles.rockball, environment);
			projectiles.rockball.model.rotation = R;
			draw(projectiles.rockball, environment);
			projectiles.rockball.model.rotation = R2;
			draw(projectiles.rockball, environment);

		}

		glDepthMask(true);
		glDisable(GL_BLEND);
		

	}

}

void scene_structure::display_death(vec3 pos, double size, int t) {
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glDepthMask(false);

	smoke.texture.initialize_texture_2d_on_gpu(smoke_grid[t], GL_REPEAT, GL_REPEAT);
	smoke.model.translation = pos;
	smoke.model.scaling = size;
	smoke.model.rotation = rotation_transform::from_frame_transform({ cos(smoke_turn_speed * timer.t + 90),sin(smoke_turn_speed * timer.t + 90),0 }, { 0,0,1 }, camera_control.camera_model.right(), {0,0,1});
	draw(smoke, environment);
	smoke.model.scaling = size/3;
	smoke.model.translation = pos + vec3(-1, -1, 0.5);
	draw(smoke, environment);
	smoke.model.translation = pos + vec3(0.5, -0.5, 1);
	draw(smoke, environment);
	smoke.model.translation = pos + vec3(-0.5, 0.5, 0.5);
	draw(smoke, environment);
	smoke.model.translation = pos + vec3(1, 0.5, -0.5);
	draw(smoke, environment);

	glDepthMask(true);
	glDisable(GL_BLEND);
}

void scene_structure::projectile_menu() {

	//Moves icon and changes projectile type, menu_change makes sure one click corresponds to one change
	if (camera_control.inputs->mouse.click.right) {
		if (!menu_change) {
			current_menu = (current_menu + 1) % 5;
			std::cout << current_menu;
			menu_change = true;
		}
	}
	else {
		menu_change = false;
	}

	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glDepthMask(false);

	auto const& camera = camera_control.camera_model;

	for (int icon = 0; icon < 5; icon++) {
		menu_icons[icon].model.translation = camera.position_camera + 2*camera.front();
		rotation_transform R = rotation_transform::from_frame_transform({ 1,0,0 }, { 0,0,1 }, camera.right(), camera.up());
		menu_icons[icon].model.rotation = R;
		draw(menu_icons[icon], environment);
	}

	std::vector<float> shifts = { 0.08f, 0.44f, 0.83f, 1.23f, 1.65f };
	menu_frame.model.translation = camera.position_camera + 1.8f*camera.front() + shifts[current_menu] * camera.right() + 0.06f * camera.up();
	rotation_transform R = rotation_transform::from_frame_transform({ 1,0,0 }, { 0,0,1 }, camera.right(), camera.up());
	menu_frame.model.rotation = R;
	draw(menu_frame, environment);

	glDepthMask(true);
	glDisable(GL_BLEND);
}

void scene_structure::mouse_move_event()
{
	if (!inputs.keyboard.shift)
		camera_control.action_mouse_move(environment.camera_view);
}
void scene_structure::mouse_click_event()
{
	if (camera_control.inputs->mouse.click.left){
		projectiles.add_ball(camera_control.camera_model.position_camera + 2*camera_control.camera_model.front(), 20*camera_control.camera_model.front(), current_menu);
	}
	camera_control.action_mouse_click(environment.camera_view);
}
void scene_structure::keyboard_event()
{
	camera_control.action_keyboard(environment.camera_view);
	if(camera_control.inputs->keyboard.shift) {
		projectiles.reset();
	}
}
void scene_structure::idle_frame()
{
	//parameters to make sure the player doesn't walk outside the map
	vec4 dir_h = {
		evaluate_terrain_height(camera_control.camera_model.position_camera.x - camera_control.camera_model.front().y * 0.1, camera_control.camera_model.position_camera.y + camera_control.camera_model.front().x * 0.1),
		evaluate_terrain_height(camera_control.camera_model.position_camera.x + camera_control.camera_model.front().y * 0.1, camera_control.camera_model.position_camera.y - camera_control.camera_model.front().x * 0.1),
		evaluate_terrain_height(camera_control.camera_model.position_camera.x - camera_control.camera_model.front().x * 0.1, camera_control.camera_model.position_camera.y - camera_control.camera_model.front().y * 0.1),
		evaluate_terrain_height(camera_control.camera_model.position_camera.x + camera_control.camera_model.front().x * 0.1, camera_control.camera_model.position_camera.y + camera_control.camera_model.front().y * 0.1)
			};
	if (camera_control.inputs->keyboard.ctrl) {
		camera_control.idle_frame(environment.camera_view, 10, gui.fly, dir_h);
	}
	else {
		camera_control.idle_frame(environment.camera_view, gui.speed, gui.fly, dir_h);
	}
}
float scene_structure::day_time() {
	return fmod(13+0.3*timer.t, 24); // Sends the time back in hours, starts at day (13pm)
}