//
//  main.c
//  Super Polarity
//
//  Created by Ruben Beltran del Rio on 8/13/13.
//  Copyright (c) 2013 Abuguet. All rights reserved.
//

#include <stdio.h>
#include <time.h>
#include <math.h>

#include "SDL2/SDL.h"
#include "SDL2_image/SDL_image.h"

#include "actor.h"
#include "actor_manager.h"

// TODO: Move these guys to a config header file
#define SCREEN_WIDTH 640
#define SCREEN_HEIGHT 480
#define FPS 30

SDL_Window *window;
SDL_Renderer *renderer;
SDL_Texture *benHead;
SDL_Rect benRect;
bool focus;

ActorManager *actorManager;

void init () {
    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
        printf("Could not initialize SDL");
        exit(1);
    }
    
    // Load the window and renderer
    window = SDL_CreateWindow("Super Polarity", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 0, 0, SDL_WINDOW_OPENGL | SDL_WINDOW_FULLSCREEN_DESKTOP);
    
    renderer = SDL_CreateRenderer(window, -1, 0);
    
    // Set linear quality for scaling, and the "logical" window size.
    SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
    SDL_RenderSetLogicalSize(renderer, SCREEN_WIDTH, SCREEN_HEIGHT);
}

void close () {
    SDL_DestroyTexture(benHead);
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();
}


void initActorManager () {
    Actor *actor;
    Actor *otherActor;
    
    //test the Actor Manager.
    actorManager = createActorManager();
    
    actor = createActor();
    actor->pos.x = 55;
    actor->pos.y = 24;
    actorManager->addActor(actorManager, actor);
    
    otherActor = createActor();
    otherActor->pos.x=100;
    otherActor->pos.y=100;
    actorManager->addActor(actorManager, otherActor);
    
}

void loadAssets() {
    initActorManager();
}

void draw (SDL_Renderer *renderer) {
    SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
    SDL_RenderClear(renderer);
    
    actorManager->draw(actorManager);
    
    SDL_RenderPresent(renderer);
}

void update (Uint32 dt) {
    actorManager->update(actorManager, dt);
}

int main(int argc, const char * argv[])
{
    
    // SDL Initialization. TODO: Should have an initializer.
    Uint32 startFrame = 0;
    Uint32 endFrame = 0;
    Uint32 lastTime = 0;
    Uint32 dt;
    Uint32 delay;
    int done;
    
    init();
    loadAssets();
   
    
    done = 0;
    focus = true;
    
    // Event Loop.
    while (!done) {
        startFrame = SDL_GetTicks();
        dt = startFrame - lastTime;
        lastTime = startFrame;
        
        SDL_Event event;
        while (SDL_PollEvent(&event)) {
            if (event.type == SDL_QUIT) {
                done = 1;
            }
            if (event.type == SDL_WINDOWEVENT) {
                if (event.window.event == SDL_WINDOWEVENT_FOCUS_LOST) {
                    focus = false;
                }
                if (event.window.event == SDL_WINDOWEVENT_FOCUS_GAINED) {
                    focus = true;
                }
            }
        }
        
        if (focus) {
            update(dt);
            draw(renderer);
        }
        
        endFrame = SDL_GetTicks();
        
        /* see if we have time to sleep */
        delay = 1000 / FPS - (endFrame - startFrame);
        if (delay > 1000 / FPS) {
            delay = 1000 / FPS;
        }
        SDL_Delay(delay);
    }
    
    close();

    return 0;
}