#define OLC_PGE_APPLICATION
#include "pixelGameEngine.h"
#include "Meteos.h"
#include <random>

Meteos*game;

bool Meteos::OnUserCreate()
{
	game=this;

	std::random_device rd;  //Will be used to obtain a seed for the random number engine
    gen=std::mt19937(rd()); //Standard mersenne_twister_engine seeded with rd()
    randBlockPos=std::uniform_int_distribution<>(0, 9);

	gameBoard=Board({10,14},6.f);
	return true;
}

bool Meteos::OnUserUpdate(float fElapsedTime)
{
	lastBlockSpawn+=fElapsedTime;
	if (lastBlockSpawn>=5.0f){
		lastBlockSpawn-=5.0f;
		blocks.push_back(Block({(float)randBlockPos(gen)*12,0}));
	}
	Clear(Pixel(32,32,255));
	for (int x=-1;x<=gameBoard.boardSize.x;x++) {
		for (int y=0;y<=gameBoard.boardSize.y;y++) {
			if (x==-1||x==10||y==14) {
				FillRectDecal({(float)(gameBoard.drawOffset.x+x*12),(float)(gameBoard.drawOffset.y+y*12)},{12,12},Pixel(0,0,0,255));
			} else {
				DrawRectDecal({(float)(gameBoard.drawOffset.x+x*12),(float)(gameBoard.drawOffset.y+y*12)},{12,12},Pixel(255,255,255,64));
			}
		}
	}
	for (Block&b:blocks) {
		if (b.pos.y<gameBoard.yBottom) {
			b.vspeed+=gameBoard.gravity*fElapsedTime;
			b.pos.y+=b.vspeed*fElapsedTime;
		} else {
			b.vspeed=0;
			b.pos.y=gameBoard.yBottom;
		}
		FillRectDecal(b.pos+gameBoard.drawOffset,{12,12},GREEN);
	}
	return true;
}

int main()
{
	Meteos instance;
	if (instance.Construct(256, 240, 4, 4))
		instance.Start();
	return 0;
}