ConsoleGameEngine

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#define CGE_IMPL
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#include "ConsoleGameEngine.hpp"
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using namespace std;
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constexpr int aGlyphs[4] = { PIXEL_SOLID, PIXEL_QUARTER, PIXEL_HALF, PIXEL_THREEQUARTERS };
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class Example : public ConsoleGameEngine
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{
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public:
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	Example() {}
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	inline static wstring s_sFileName;
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	static int s_nWidth;
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	static int s_nHeight;
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	Sprite* sprCanvas = nullptr;
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	int nGlyph = 0;
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	int nColour = FG_WHITE;
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protected:
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	bool OnUserCreate() override
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	{
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		if (s_nWidth == 0 || s_nHeight == 0)
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		{
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			if (s_sFileName.empty())
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			{
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				// Create a canvas without a size
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				sprCanvas = new Sprite();
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				// Set a default filename
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				s_sFileName = L"untitled.spr";
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			}
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			else
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			{
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				// Create the canvas and set load its content from a file
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				sprCanvas = new Sprite(s_sFileName);
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			}
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		}
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		else
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		{
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			// Create the canvas with a size
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			sprCanvas = new Sprite(s_nWidth, s_nHeight);
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		}
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		sAppName = s_sFileName;
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		return true;
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	}
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	bool OnUserUpdate(float fDeltaTime) override
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	{
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		if (GetKey(VK_ESCAPE).bPressed)
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			return false;
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		if (GetKey(L'S').bPressed)
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			sprCanvas->Save(s_sFileName);
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		if (GetKey(VK_UP).bPressed) nColour--;
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		if (GetKey(VK_DOWN).bPressed) nColour++;
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		if (GetKey(VK_LEFT).bPressed) nGlyph--;
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		if (GetKey(VK_RIGHT).bPressed) nGlyph++;
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		if (nColour < 0x0) nColour = 0xF;
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		if (nColour > 0xF) nColour = 0x0;
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		if (nGlyph < 0) nGlyph = 3;
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		if (nGlyph > 3) nGlyph = 0;
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		int nCanvasStartX = ScreenWidth() * 0.3f;
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		int nCanvasStartY = ScreenHeight() * 0.3f;
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		int nCanvasEndX = nCanvasStartX + sprCanvas->nWidth;
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		int nCanvasEndY = nCanvasStartY + sprCanvas->nHeight;
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		int nMouseX = MouseX();
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		int nMouseY = MouseY();
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		int nNormalisedX = nMouseX - nCanvasStartX;
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		int nNormalisedY = nMouseY - nCanvasStartY;
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		if (nNormalisedX >= 0 && nNormalisedY >= 0 && nNormalisedX < sprCanvas->nWidth && nNormalisedY < sprCanvas->nHeight)
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		{
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			if (GetMouse(0).bHeld)
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			{
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				sprCanvas->SetGlyph(nNormalisedX, nNormalisedY, aGlyphs[nGlyph]);
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				sprCanvas->SetColour(nNormalisedX, nNormalisedY, nColour);
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			}
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			if (GetMouse(1).bHeld)
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			{
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				sprCanvas->SetGlyph(nNormalisedX, nNormalisedY, PIXEL_SOLID);
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				sprCanvas->SetColour(nNormalisedX, nNormalisedY, FG_BLACK);
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			}
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		}
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		Clear(PIXEL_SOLID, FG_BLACK);
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		// Draw an outline
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		DrawLine(nCanvasStartX - 1, nCanvasStartY - 1, nCanvasEndX, nCanvasStartY - 1, PIXEL_SOLID, FG_RED | BG_RED);
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		DrawLine(nCanvasStartX - 1, nCanvasEndY, nCanvasEndX, nCanvasEndY, PIXEL_SOLID, FG_RED | BG_RED);
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		DrawLine(nCanvasStartX - 1, nCanvasStartY - 1, nCanvasStartX - 1, nCanvasEndY, PIXEL_SOLID, FG_RED | BG_RED);
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		DrawLine(nCanvasEndX, nCanvasStartY - 1, nCanvasEndX, nCanvasEndY, PIXEL_SOLID, FG_RED | BG_RED);
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		// Draw the canvas
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		DrawSprite(nCanvasStartX, nCanvasStartY, sprCanvas);
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		int y = 0;
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		// Display info about a current state of the program
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		DrawString(0, y++, L"Brush: ", FG_WHITE); Draw(8, y - 1, aGlyphs[nGlyph], nColour);
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		DrawString(0, y++, L"Mouse: " + to_wstring(nNormalisedX) + L", " + to_wstring(nNormalisedY), FG_WHITE);
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		y++;
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		// Display controls
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		DrawString(0, y++, L"Change brush glyph: ←, →", FG_WHITE);
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		DrawString(0, y++, L"Change brush colour: ↑, ↓", FG_WHITE);
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		DrawString(0, y++, L"Save: S", FG_WHITE);
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		DrawString(0, y++, L"Exit: ESC", FG_WHITE);
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		y++;
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		// Display a glyph table
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		DrawString(0, y++, L"Glyphs:");
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		DrawString(0, y++, L"PIXEL_SOLID = 9608");
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		DrawString(0, y++, L"PIXEL_QUARTER = 9617");
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		DrawString(0, y++, L"PIXEL_HALF = 9618");
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		DrawString(0, y++, L"PIXEL_THREEQUARTERS = 9619");
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		y++;
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		// Display a colour table
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		DrawString(0, y++, L"Colours:");
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		DrawString(0, y++, L"FG_BLACK = 0");
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		DrawString(0, y++, L"FG_DARK_BLUE = 1");
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		DrawString(0, y++, L"FG_DARK_GREEN = 2");
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		DrawString(0, y++, L"FG_DARK_CYAN = 3");
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		DrawString(0, y++, L"FG_DARK_RED = 4");
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		DrawString(0, y++, L"FG_DARK_MAGENTA = 5");
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		DrawString(0, y++, L"FG_DARK_YELLOW = 6");
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		DrawString(0, y++, L"FG_GREY = 7");
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		DrawString(0, y++, L"FG_DARK_GREY = 8");
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		DrawString(0, y++, L"FG_BLUE = 9");
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		DrawString(0, y++, L"FG_GREEN = 10");
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		DrawString(0, y++, L"FG_CYAN = 11");
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		DrawString(0, y++, L"FG_RED = 12");
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		DrawString(0, y++, L"FG_MAGENTA = 13");
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		DrawString(0, y++, L"FG_YELLOW = 14");
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		DrawString(0, y++, L"FG_WHITE = 15");
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		return true;
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	}
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};
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int Example::s_nWidth = 0;
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int Example::s_nHeight = 0;
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int main(int argc, char** argv)
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{
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	Example demo;
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	if (argc >= 2)
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	{
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		Example::s_sFileName.resize(strlen(argv[1]));
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		mbstowcs(Example::s_sFileName.data(), argv[1], Example::s_sFileName.size());
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		if (argc == 3)
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		{
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			int nWidth = atoi(argv[2]);
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			Example::s_nWidth = Example::s_nHeight = nWidth;
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		}
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		if (argc == 4)
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		{
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			Example::s_nWidth = atoi(argv[2]);
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			Example::s_nHeight = atoi(argv[3]);
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		}
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	}
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	if (demo.ConstructConsole(80, 80, 10, 10) == rcode::OK)
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		demo.Run();
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	return 0;
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}
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