OneLoneCoder_Frogger.cpp

/*
OneLoneCoder.com - Code-It-Yourself! Frogger at the command prompt (quick and simple c++)
"Ribbet" - @Javidx9

Disclaimer
~~~~~~~~~~
I don't care what you use this for. It's intended to be educational, and perhaps
to the oddly minded - a little bit of fun. Please hack this, change it and use it
in any way you see fit. BUT, you acknowledge that I am not responsible for anything
bad that happens as a result of your actions. However, if good stuff happens, I
would appreciate a shout out, or at least give the blog some publicity for me.
Cheers!

Background
~~~~~~~~~~
This is a bit of an unusual one. The games mechanics are very simple, but as soon
as you add graphics the code almost doubles in size! By standardising how the
lanes work and interact with the frog, the game pretty much controls itself, meaning
the game code is really really short. Everything else is eye candy.

Controls
~~~~~~~~
Arrow keys move frog. Cross the road, then the river, to get frog to safety.

Author
~~~~~~
Twitter: @javidx9
Blog: www.onelonecoder.com

Video:
~~~~~~
https://youtu.be/QJnZ5QmpXOE

Last Updated: 20/08/2017
*/

#include <iostream>
#include <string>
using namespace std;

#include "olcConsoleGameEngine.h"


class OneLoneCoder_Frogger : public olcConsoleGameEngine
{
public:
	OneLoneCoder_Frogger()
	{
		m_sAppName = L"Frogger";
	}

private:
	vector<pair<float, wstring>> vecLanes = 
	{ 
		{0.0f,  L"wwwhhwwwhhwwwhhwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww"}, // 64 elements per lane
		{-3.0f, L",,,jllk,,jllllk,,,,,,,jllk,,,,,jk,,,jlllk,,,,jllllk,,,,jlllk,,,,"}, 
		{3.0f,  L",,,,jllk,,,,,jllk,,,,jllk,,,,,,,,,jllk,,,,,jk,,,,,,jllllk,,,,,,,"},
		{2.0f,  L",,jlk,,,,,jlk,,,,,jk,,,,,jlk,,,jlk,,,,jk,,,,jllk,,,,jk,,,,,,jk,,"},
		{0.0f,  L"pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp"},
		{-3.0f, L"....asdf.......asdf....asdf..........asdf........asdf....asdf..."},
		{ 3.0f, L".....ty..ty....ty....ty.....ty........ty..ty.ty......ty.......ty"},
		{-4.0f, L"..zx.....zx.........zx..zx........zx...zx...zx....zx...zx...zx.."},		
		{2.0f,  L"..ty.....ty.......ty.....ty......ty..ty.ty.......ty....ty......."},
		{0.0f,  L"pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp"}
	};

	float fTimeSinceStart = 0.0f;
	float fFrogX = 8.0f;
	float fFrogY = 9.0f;
	int nLaneWidth = 18;
	int nCellSize = 8;

	bool *bufDanger = nullptr;

	olcSprite *spriteBus = nullptr;
	olcSprite *spriteLog = nullptr;
	olcSprite *spriteWater = nullptr;
	olcSprite *spriteFrog = nullptr;
	olcSprite *spritePavement = nullptr;
	olcSprite *spriteCar1 = nullptr;
	olcSprite *spriteCar2 = nullptr;
	olcSprite *spriteWall = nullptr;
	olcSprite *spriteHome = nullptr;

protected:
	// Called by olcConsoleGameEngine
	virtual bool OnUserCreate()
	{
		bufDanger = new bool[ScreenWidth() * ScreenHeight()];
		memset(bufDanger, 0, ScreenWidth() * ScreenHeight() * sizeof(bool));
		
		// You'll need these sprites!

		spriteBus = new olcSprite(L"FroggerSprites/bus.spr");
		spriteLog = new olcSprite(L"FroggerSprites/log.spr");
		spriteWater = new olcSprite(L"FroggerSprites/water.spr");
		spriteFrog = new olcSprite(L"FroggerSprites/frog.spr");
		spritePavement = new olcSprite(L"FroggerSprites/pavement.spr");
		spriteWall = new olcSprite(L"FroggerSprites/wall.spr");
		spriteHome = new olcSprite(L"FroggerSprites/home.spr");
		spriteCar1 = new olcSprite(L"FroggerSprites/car1.spr");
		spriteCar2 = new olcSprite(L"FroggerSprites/car2.spr");
		return true;
	}

	// Called by olcConsoleGameEngine
	virtual bool OnUserUpdate(float fElapsedTime)
	{
		fTimeSinceStart += fElapsedTime;

		// Handle Input
		if (m_keys[VK_UP].bReleased)	fFrogY -= 1.0f;
		if (m_keys[VK_DOWN].bReleased)	fFrogY += 1.0f;
		if (m_keys[VK_LEFT].bReleased)	fFrogX -= 1.0f;
		if (m_keys[VK_RIGHT].bReleased)	fFrogX += 1.0f;

		// Frog is moved by platforms
		if (fFrogY <= 3)	fFrogX -= fElapsedTime * vecLanes[(int)fFrogY].first;

		// Collision detection - check four corners of frog against danger buffer
		bool tl = bufDanger[(int)(fFrogY*nCellSize + 1) * ScreenWidth() + (int)(fFrogX*nCellSize + 1)];
		bool tr = bufDanger[(int)(fFrogY*nCellSize + 1) * ScreenWidth() + (int)((fFrogX+1)*nCellSize - 1)];
		bool bl = bufDanger[(int)((fFrogY+1)*nCellSize - 1) * ScreenWidth() + (int)(fFrogX*nCellSize + 1)];
		bool br = bufDanger[(int)((fFrogY+1)*nCellSize - 1) * ScreenWidth() + (int)((fFrogX+1)*nCellSize - 1)];

		if (tl || tr || bl || br)
		{
			// Frogs been hit :-(
			fFrogX = 8.0f;
			fFrogY = 9.0f;
		}

		// Draw Lanes
		int x=-1, y=0;
		for (auto lane : vecLanes)
		{
			// Find lane offset start
			int nStartPos = (int)(fTimeSinceStart * lane.first) % 64;
			int nCellOffset = (int)((float)nCellSize* fTimeSinceStart * lane.first) % nCellSize;
			if (nStartPos < 0)	nStartPos = 64 - (abs(nStartPos) % 64);

			for (int i = 0; i < nLaneWidth; i++)
			{			
				// Draw Graphics
				wchar_t graphic = lane.second[(nStartPos + i) % 64];
				//Fill((x + i)*nCellSize - nCellOffset, y*nCellSize, (x + i + 1)*nCellSize - nCellOffset, (y + 1)*nCellSize, graphic);

			

				switch (graphic) // Graphics always make code verbose and less clear
				{					
					case L'a':	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteBus, 0, 0, 8, 8);		break; // Bus 1
					case L's':	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteBus, 8, 0, 8, 8);		break; // Bus 2
					case L'd':	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteBus, 16, 0, 8, 8);	break; // Bus 3
					case L'f':	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteBus, 24, 0, 8, 8);	break; // Bus 4

					case L'j':	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteLog, 0, 0, 8, 8);		break; // Log Start
					case L'l':	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteLog, 8, 0, 8, 8);		break; // Log Middle
					case L'k':	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteLog, 16, 0, 8, 8);	break; // Log End
											
					case L'z': 	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteCar1, 0, 0, 8, 8);	break; // Car1 Back
					case L'x':	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteCar1, 8, 0, 8, 8);	break; // Car1 Front

					case L't': 	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteCar2, 0, 0, 8, 8);	break; // Car2 Back
					case L'y': 	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteCar2, 8, 0, 8, 8);	break; // Car2 Front

					case L'w': 	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteWall, 0, 0, 8, 8);	break; // Wall
					case L'h':	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteHome, 0, 0, 8, 8);	break; // Home
					case L',': 	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spriteWater, 0, 0, 8, 8);	break; // Water
					case L'p': 	DrawPartialSprite((x + i)*nCellSize - nCellOffset, y*nCellSize, spritePavement, 0, 0, 8, 8); break; // Pavement
					case L'.': 	Fill((x + i)*nCellSize - nCellOffset, y*nCellSize, (x + i + 1)*nCellSize - nCellOffset, (y + 1)*nCellSize, L' ');	break; // Road
				}

				// Fill Danger buffer
				for (int j = (x + i)*nCellSize - nCellOffset; j < (x + i + 1)*nCellSize - nCellOffset; j++)
					for (int k = y*nCellSize; k < (y + 1)*nCellSize; k++)
						if (j >= 0 && j < ScreenWidth() && k >= 0 && k < ScreenHeight())
							bufDanger[k*ScreenWidth() + j] = 
								!(graphic == L'.' ||
								graphic == L'j' || graphic == L'k' || graphic == L'l' ||
								graphic == L'p' ||
								graphic == L'h');
			}						
			y++;
		}

		// Draw Frog
		DrawSprite(fFrogX*nCellSize, fFrogY*nCellSize, spriteFrog);
		return true;
	}
};


int main()
{
	// Use olcConsoleGameEngine derived app
	OneLoneCoder_Frogger game;
	game.ConstructConsole(128, 80, 12, 12);
	game.Start();
	return 0;
}