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extern crate gate;

use gate::{App, Audio};
use gate::app_info::AppInfo;
use gate::input::{InputEvent, KeyCode};
use gate::renderer::{Renderer, Affine};

mod asset_id { include!(concat!(env!("OUT_DIR"), "/asset_id.rs")); }
use asset_id::{AssetId, SpriteId, TileId, MusicId, SoundId};

struct BugBasherGame {
    bug_pos: (f64, f64)
}

impl App<AssetId> for BugBasherGame {
    fn start(&mut self, _audio: &mut Audio<AssetId>) {
    }

    fn advance(&mut self, seconds: f64, _audio: &mut Audio<AssetId>) -> bool {
        self.bug_pos.0 = (self.bug_pos.0 + 150. * seconds) % 1000.;
        self.bug_pos.1 = (self.bug_pos.0 / 150.).sin() * 500.;
        
        true
    }

    fn input(&mut self, evt: InputEvent, _audio: &mut Audio<AssetId>) -> bool {
        true
    }

    fn render(&mut self, renderer: &mut Renderer<AssetId>) {
        renderer.clear((255,255,255));
        { // drawing sprites
            let mut renderer = renderer.sprite_mode();
            let camera = &Affine::translate(-500., 0.);
            renderer.draw(
                &camera.pre_translate(self.bug_pos.0, self.bug_pos.1),
                SpriteId::Bug
            );
        }
    }
}

fn main() {
    let info = AppInfo::with_app_height(1000.).title("Bug Basher").build();
    gate::run(info, BugBasherGame {
        bug_pos: (400., 0.)
    });
}