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use renderer::Renderer;
use audio::Audio;
use types::{RenderItem, TextItem, Camera, PhysicsType};
use input::Input;
use imgui::Ui;
use nalgebra::Vector3 as nVector3;
use nalgebra::Translation3;
use nphysics3d::world::World;
use nphysics3d::object::{RigidBody, WorldObject};
use ncollide::shape::Cuboid;
use std::boxed::Box;
use std::time::Instant;
const PHYSICS_DIVISOR: f32 = 2f32;
const GLOBAL_REST: f32 = 0.05f32;
pub struct Game {
pub input: Input,
pub renderer: Renderer,
pub physics: World<f32>,
pub audio: Audio,
pub cam: Camera,
render_items: Vec<RenderItem>,
text_items: Vec<TextItem>,
delta: f32,
}
impl Game {
pub fn new() -> Game {
let mut world = World::new();
world.set_gravity(nVector3::new(0.0, -9.81, 0.0));
let cam = Camera {
pos: (0.0f32, 0.0, 0.0),
euler_rot: (0.0f32, 0.0, 0.0),
};
let (renderer, events_loop) = Renderer::new("caper window".to_string());
Game {
input: Input::from_existing(events_loop),
renderer: renderer,
physics: world,
audio: Audio::new(),
cam: cam,
render_items: Vec::new(),
text_items: Vec::new(),
delta: 0.016666667f32,
}
}
pub fn render_items_len(&self) -> usize {
self.render_items.len()
}
pub fn get_render_item(&mut self, index: usize) -> &mut RenderItem {
&mut self.render_items[index]
}
pub fn get_render_item_by_name(&mut self, name: String) -> Option<&mut RenderItem> {
for i in 0..self.render_items.len() {
if self.render_items[i].name == name {
return Some(&mut self.render_items[i]);
}
}
None
}
pub fn add_render_item(&mut self, render_item: RenderItem) {
self.render_items.push(render_item);
let i = self.render_items.len() - 1;
self.add_physics(i);
}
pub fn add_physics(&mut self, i: usize) {
match self.render_items[i].physics_type {
PhysicsType::Static => {
for j in 0..self.render_items[i].instance_transforms.len() {
let ri_trans = self.render_items[i].instance_transforms[j];
let geom = Cuboid::new(nVector3::new(
ri_trans.scale.0,
ri_trans.scale.1,
ri_trans.scale.2,
));
let mut rb = RigidBody::new_static(geom, GLOBAL_REST, 0.6);
rb.append_translation(&Translation3::new(
ri_trans.pos.0 * PHYSICS_DIVISOR,
ri_trans.pos.1 * PHYSICS_DIVISOR,
ri_trans.pos.2 * PHYSICS_DIVISOR,
));
rb.set_user_data(Some(Box::new((i, j))));
rb.set_margin(0f32);
self.physics.add_rigid_body(rb);
}
}
PhysicsType::Dynamic => {
for j in 0..self.render_items[i].instance_transforms.len() {
let ri_trans = self.render_items[i].instance_transforms[j];
let geom = Cuboid::new(nVector3::new(
ri_trans.scale.0,
ri_trans.scale.1,
ri_trans.scale.2,
));
let mut rb = RigidBody::new_dynamic(geom, 5.0, GLOBAL_REST, 0.8);
rb.append_translation(&Translation3::new(
ri_trans.pos.0 * PHYSICS_DIVISOR,
ri_trans.pos.1 * PHYSICS_DIVISOR,
ri_trans.pos.2 * PHYSICS_DIVISOR,
));
rb.set_user_data(Some(Box::new((i, j))));
rb.set_margin(0f32);
if i == 1 && j == 0 {
rb.set_deactivation_threshold(None);
}
self.physics.add_rigid_body(rb);
}
}
PhysicsType::None => {}
}
}
pub fn text_items_len(&self) -> usize {
self.text_items.len()
}
pub fn get_text_item(&mut self, index: usize) -> &mut TextItem {
&mut self.text_items[index]
}
pub fn get_text_item_by_name(&mut self, name: String) -> Option<&mut TextItem> {
for i in 0..self.text_items.len() {
if self.text_items[i].name == name {
return Some(&mut self.text_items[i]);
}
}
None
}
pub fn add_text_item(&mut self, text_item: TextItem) {
self.text_items.push(text_item);
}
pub fn update<F: FnMut(&Ui)>(&mut self, mut render_imgui: F) {
let frame_start = Instant::now();
{
let gl_window = self.renderer.display.gl_window();
let window = gl_window.window();
self.input.update_inputs(window);
}
{
self.renderer.update_imgui_input(&self.input);
}
{
for rbi in self.physics.rigid_bodies() {
let mut wo = WorldObject::RigidBody(rbi.clone());
let (ri_i, ri_it_i) = {
let rb = wo.borrow_rigid_body();
let user_data = rb.user_data().unwrap();
let tup_ref = user_data.downcast_ref::<(usize, usize)>().unwrap();
*tup_ref
};
if self.render_items.len() > ri_i &&
self.render_items[ri_i].instance_transforms.len() > ri_it_i
{
let mut rb = wo.borrow_mut_rigid_body();
let ri_pos = self.render_items[ri_i].instance_transforms[ri_it_i].pos;
rb.set_translation(Translation3::new(
ri_pos.0 * PHYSICS_DIVISOR,
ri_pos.1 * PHYSICS_DIVISOR,
ri_pos.2 * PHYSICS_DIVISOR,
));
}
}
}
{
self.physics.step(self.delta);
for rbi in self.physics.rigid_bodies() {
let wo = WorldObject::RigidBody(rbi.clone());
let rb = wo.borrow_rigid_body();
let trans = rb.position().translation.vector;
let rot = rb.position().rotation.coords.data.as_slice();
let user_data = rb.user_data().unwrap();
let &(ri_i, ri_it_i) = user_data.downcast_ref::<(usize, usize)>().unwrap();
if self.render_items.len() > ri_i &&
self.render_items[ri_i].instance_transforms.len() > ri_it_i
{
self.render_items[ri_i].instance_transforms[ri_it_i].pos =
(
trans.x / PHYSICS_DIVISOR,
trans.y / PHYSICS_DIVISOR,
trans.z / PHYSICS_DIVISOR,
);
self.render_items[ri_i].instance_transforms[ri_it_i].rot =
(rot[0], rot[1], rot[2], rot[3]);
}
}
}
{
self.renderer.draw(
&mut self.cam,
&mut self.render_items,
&mut self.text_items,
&mut render_imgui,
);
}
self.delta = 0.000000001f32 * frame_start.elapsed().subsec_nanos() as f32;
}
}