// Load functions are performed on initialization
void TextureCorridor::LoadMesh(int corridorType)
{
	for (int i = 0; i < squareList.size(); ++i)
		delete squareList[i];
	squareList.clear();

	Square* square = new Square;

	vector<float> xValues = { corridorWidth,corridorWidth, 2.0f*corridorWidth, 2.0f*corridorWidth, corridorWidth };

	
	square->SetScaling(2.0f*corridorWidth, 60*wallHeight);
	square->SetRotation(-90.0f, 0.0f, 0.0f);
	square->SetPosition(0.0f, 0.0f, -(corridorDepth-wallHeight));
	square->SetTextureID(textureMap["floor"]);
	squareList.push_back(square);

	switch (corridorType)
	{
		// Straight corridor
		case 1:
			for (size_t wallIndex = 1; wallIndex <= 60; ++wallIndex)
			{
				float x1 = corridorWidth;
				float x2 = corridorWidth;
				float y1 = wallHeight ;
				float y2 = 0.0f;
				float z1 = -((wallIndex - 1)*wallHeight);
				float z2 = z1 - wallHeight;

				string texname = "tex" + to_string(((wallIndex - 1) % nTextures) + 1);

				// left wall #1
				square = new Square;
				square->SetTopLeft(x1, y1, z1);;
				square->SetBottomLeft(x1, y2, z1);
				square->SetTopRight(x2, y1, z2);
				square->SetBottomRight(x2, y2, z2);
				square->SetTextureID(textureMap[texname]);
				square->Apply();
				squareList.push_back(square);

				// right wall
				square = new Square;
				square->SetTopLeft(-x1, y1, z1);;
				square->SetBottomLeft(-x1, y2, z1);
				square->SetTopRight(-x2, y1, z2);
				square->SetBottomRight(-x2, y2, z2);
				square->SetTextureID(textureMap[texname]);
				square->Apply();
				squareList.push_back(square);
			}
			break;

		// Corridor with varying geometry
		case 2:
			for (size_t wallIndex = 1; wallIndex <= 60; ++wallIndex)
			{
				float x1 = xValues[(wallIndex - 1) % xValues.size()];
				float x2 = xValues[(wallIndex) % xValues.size()];
				float y1 = wallHeight;
				float y2 = 0.0f;
				float z1 = -((wallIndex - 1)*wallHeight);
				float z2 = z1 - wallHeight;

				string texname = "tex" + to_string(((wallIndex - 1) % nTextures) + 1);

				// left wall #1
				square = new Square;
				square->SetTopLeft(x1, y1, z1);;
				square->SetBottomLeft(x1, y2, z1);
				square->SetTopRight(x2, y1, z2);
				square->SetBottomRight(x2, y2, z2);
				square->SetTextureID(textureMap[texname]);
				square->Apply();
				squareList.push_back(square);

				// right wall
				square = new Square;
				square->SetTopLeft(-x1, y1, z1);;
				square->SetBottomLeft(-x1, y2, z1);
				square->SetTopRight(-x2, y1, z2);
				square->SetBottomRight(-x2, y2, z2);
				square->SetTextureID(textureMap[texname]);
				square->Apply();
				squareList.push_back(square);
			}
			break;
	default:
		break;
	}
}
예제 #2
0
int main()
{
	InitGlfw initGlfw;
	ShaderLoader shaderLoader;
	TextureLoader textureLoader;
	TextRenderer textRenderer;

	// Init
	initGlfw.Init();
	textRenderer.Init();
	glfwSetKeyCallback(initGlfw.window, KeyCallback);
	glfwSetMouseButtonCallback(initGlfw.window, MouseButtonCallback);
	glfwSetCursorPosCallback(initGlfw.window, MouseMoveCallback);

	// Shader loading
	GLuint defaultShaderProgram;
	GLuint textShaderProgram;
	GLuint simpleShaderProgram;
	defaultShaderProgram = shaderLoader.CreateProgram("Shaders\\vertex_shader.glsl", "Shaders\\fragment_shader.glsl");
	textShaderProgram = shaderLoader.CreateProgram("Shaders\\text_vs.glsl", "Shaders\\text_fs.glsl");
	simpleShaderProgram = shaderLoader.CreateProgram("Shaders\\simple_vertex_shader.glsl", "Shaders\\simple_fragment_shader.glsl");
	

	// Load texture
	GLuint texture = textureLoader.LoadRGB("Images\\container.jpg");
	GLuint blankTexture = textureLoader.LoadBlank();
	cout << "Blank texture status: " << blankTexture << endl;

	// Define camera component vectors
	float wallDistanceMargin = 0.2f;
	float currentX;
	float currentZ;

	glm::vec3 cameraPos = glm::vec3(0.0f, -0.5f, 6.0f);
	glm::vec3 cameraFront = glm::vec3(0.0f, 0.0f, -1.0f);
	glm::vec3 cameraUp = glm::vec3(0.0f, 1.0f, 0.0f);
	float yaw = -90.0f;
	glm::vec3 front(cos(glm::radians(yaw)), 0.0f, sin(glm::radians(yaw)));
	
	// Define model and view matrices and get shader locations
	GLuint modelLocation = glGetUniformLocation(defaultShaderProgram, "model");
	GLuint viewLocation = glGetUniformLocation(defaultShaderProgram, "view");
	GLuint projectionLocation = glGetUniformLocation(defaultShaderProgram, "projection");

	double currentTime = glfwGetTime();
	double delta;

	glm::mat4 view;
	glm::mat4 proj1;
	glm::mat4 idm  = glm::mat4();
	
	// Hard-coded virtual environment
	Square backWall;
	Square leftWall;
	Square rightWall;
	Square floorSquare;
	Square frontWall;
	Square rewardZone;

	float corridorDepth = 10.0f;
	float corridorWidth = 3.0f;
	float wallHeight = 2.0f;

	float rewardZoneDepth = 2.0f;
	float rewardZonePosition = -3.0f;

	float rewardZoneLowZ = rewardZonePosition - rewardZoneDepth;
	float rewardZoneHighZ = rewardZonePosition + rewardZoneDepth;
	bool inRewardZone = false;

	backWall.SetColor(0.5f, 0.5f, 0.9f);
	backWall.SetScaling(corridorWidth, wallHeight);
	backWall.SetPosition(0.0f, wallHeight/2, -corridorDepth);
	
	frontWall.SetColor(0.5f, 0.5f, 0.9f);
	frontWall.SetScaling(corridorWidth, wallHeight);
	frontWall.SetPosition(0.0f, wallHeight / 2.0f, corridorDepth);

	leftWall.SetColor(0.5f, 0.9f, 0.5f);
	leftWall.SetScaling(corridorDepth, wallHeight);
	leftWall.SetRotation(0.0f, 90.0f, 0.0f);
	leftWall.SetPosition(-corridorWidth, wallHeight/2, 0.0f);
	
	rightWall.SetColor(0.5f, 0.9f, 0.5f);
	rightWall.SetScaling(corridorDepth, wallHeight);
	rightWall.SetRotation(0.0f, 90.0f, 0.0f);
	rightWall.SetPosition(corridorWidth,wallHeight/2, 0.0f);
	
	floorSquare.SetColor(0.1f, 0.1f, 0.1f);
	floorSquare.SetScaling(corridorWidth, corridorDepth);
	floorSquare.SetRotation(-90.0f, 0.0f, 0.0f);
	floorSquare.SetPosition(0.0f, -wallHeight/2.0f, 0.0f);

	rewardZone.SetColor(0.2f, 0.9f, 0.2f);
	rewardZone.SetScaling(corridorWidth, rewardZoneDepth);
	rewardZone.SetRotation(-90.0f, 0.0f, 0.0f);
	rewardZone.SetPosition(0.0f, -wallHeight / 2.0f + 0.01f, rewardZonePosition);

	proj1 = glm::perspective(45.0f, (float)2.0f*initGlfw.windowInfo.width / initGlfw.windowInfo.height, 0.1f, 100.0f);
	glEnable(GL_DEPTH_TEST);

	// Create frame buffer for offscreen rendering, configured to draw to a texture buffer from which we sample
	// to draw on each window. 
	GLuint frameBufferObject;
	GLuint frameBufferTexture;
	GLuint renderBufferObject;
	
	int fullWidth =  2*initGlfw.windowInfo.width;
	glGenTextures(1, &frameBufferTexture);
	glBindTexture(GL_TEXTURE_2D, frameBufferTexture);
		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, fullWidth, initGlfw.windowInfo.height, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	glBindTexture(GL_TEXTURE_2D, 0);
	
	glGenRenderbuffers(1, &renderBufferObject);
	glBindRenderbuffer(GL_RENDERBUFFER, renderBufferObject);
		glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, fullWidth, initGlfw.windowInfo.height);
	glBindRenderbuffer(GL_RENDERBUFFER, 0);

	glGenFramebuffers(1, &frameBufferObject);
	glBindFramebuffer(GL_FRAMEBUFFER, frameBufferObject);
		glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, frameBufferTexture, 0);
		glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, renderBufferObject);
	glBindFramebuffer(GL_FRAMEBUFFER, 0);
	
	if (glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE)
		cout << "Framebuffer completed" << endl;

	// Generate quads for left and right window
	GLfloat leftScreenVertices[] = {
		// Positions   // TexCoords
		-1.0f,  1.0f,  0.0f, 1.0f,
		-1.0f, -1.0f,  0.0f, 0.0f,
		1.0f, -1.0f,  0.5f, 0.0f,

		-1.0f,  1.0f,  0.0f, 1.0f,
		1.0f, -1.0f,  0.5f, 0.0f,
		1.0f,  1.0f,  0.5f, 1.0f
	};
	GLfloat rightScreenVertices[] = {
		// Positions   // TexCoords
		-1.0f,  1.0f,  0.5f, 1.0f,
		-1.0f, -1.0f,  0.5f, 0.0f,
		1.0f, -1.0f,  1.0f, 0.0f,

		-1.0f,  1.0f,  0.5f, 1.0f,
		1.0f, -1.0f,  1.0f, 0.0f,
		1.0f,  1.0f,  1.0f, 1.0f
	};
	GLuint leftScreenVBO;
	GLuint rightScreenVBO;
	glGenBuffers(1, &leftScreenVBO);
	glBindBuffer(GL_ARRAY_BUFFER, leftScreenVBO);
		glBufferData(GL_ARRAY_BUFFER, sizeof(leftScreenVertices), leftScreenVertices, GL_STATIC_DRAW);
	glBindBuffer(GL_ARRAY_BUFFER, 0);
	
	glGenBuffers(1, &rightScreenVBO);
	glBindBuffer(GL_ARRAY_BUFFER, rightScreenVBO);
		glBufferData(GL_ARRAY_BUFFER, sizeof(rightScreenVertices), rightScreenVertices, GL_STATIC_DRAW);
	glBindBuffer(GL_ARRAY_BUFFER, 0);


	
	// Game loop
	int updateTick = 0;

	while (!glfwWindowShouldClose(initGlfw.window))
	{
		// Get time
		delta = glfwGetTime() - currentTime;
		currentTime = glfwGetTime();
		std::string fpsString = "FPS: " + std::to_string(delta);

		// Update view matrix
		// sensor readings need to be plugged in here
		front = glm::vec3(cos(glm::radians(yaw)), 0.0f, sin(glm::radians(yaw)));
		currentX = cameraPos.x;
		currentZ = cameraPos.z;

		cameraPos += yVelocity * front;
		cameraPos -= glm::normalize(glm::cross(cameraFront, cameraUp)) * xVelocity;

		// Collision detection, reset to previous position if wall boundary is crossed
		if ( (cameraPos.x-wallDistanceMargin) < -corridorWidth | (cameraPos.x + wallDistanceMargin)> corridorWidth)
			cameraPos.x = currentX;
		if ((cameraPos.z-wallDistanceMargin) < -corridorDepth | (cameraPos.z + wallDistanceMargin) > corridorDepth)
			cameraPos.z = currentZ;

		// Check reward zone entries
		if (!inRewardZone && (cameraPos.z > rewardZoneLowZ && cameraPos.z < rewardZoneHighZ))
		{
			inRewardZone = true;
			cout << "Reward zone ENTRY detected." << endl;
		}
		if (inRewardZone && (cameraPos.z < rewardZoneLowZ || cameraPos.z > rewardZoneHighZ))
		{
			inRewardZone = false;
			cout << "Reward zone EXIT detected." << endl;
		}

		view = glm::lookAt(cameraPos, cameraPos + cameraFront, cameraUp);


		// Draw the complete screen to the offscreen framebuffer
		glfwMakeContextCurrent(initGlfw.window);
		glBindFramebuffer(GL_FRAMEBUFFER, frameBufferObject);
		glViewport(0, 0, fullWidth, initGlfw.windowInfo.height);
			glEnable(GL_DEPTH_TEST);
			glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
			
			if (showFPS)
				textRenderer.RenderText(textShaderProgram, fpsString, 0.0f, GLfloat(initGlfw.windowInfo.height - 20), 1.0, glm::vec3(0.8, 0.6, 0.6));

			glUseProgram(defaultShaderProgram);
			glUniformMatrix4fv(viewLocation, 1, GL_FALSE, glm::value_ptr(view));
			glUniformMatrix4fv(projectionLocation, 1, GL_FALSE, glm::value_ptr(proj1));
			glUniformMatrix4fv(modelLocation, 1, GL_FALSE, glm::value_ptr(idm));
			glBindTexture(GL_TEXTURE_2D, texture);
			frontWall.Draw();
			backWall.Draw();
			leftWall.Draw();
			rightWall.Draw();
			floorSquare.Draw();
			glBindTexture(GL_TEXTURE_2D, blankTexture);
			rewardZone.Draw();
			glBindTexture(GL_TEXTURE_2D, 0);
		glBindFramebuffer(GL_FRAMEBUFFER, 0);


		// First monitor drawing calls
		//glfwMakeContextCurrent(initGlfw.window);
		glClear(GL_COLOR_BUFFER_BIT);
		glDisable(GL_DEPTH_TEST);
		glViewport(0, 0, initGlfw.windowInfo.width, initGlfw.windowInfo.height);
		glUseProgram(simpleShaderProgram);
		glBindTexture(GL_TEXTURE_2D, frameBufferTexture);
		glBindBuffer(GL_ARRAY_BUFFER, rightScreenVBO);
			glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (GLvoid*)0);
			glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (GLvoid*)(2 * sizeof(GLfloat)));
			glEnableVertexAttribArray(0);
			glEnableVertexAttribArray(1);
			glDrawArrays(GL_TRIANGLES, 0, 6);
		glBindBuffer(GL_ARRAY_BUFFER, 0);
		glfwSwapBuffers(initGlfw.window);

		// Second monitor drawing calls
		glfwMakeContextCurrent(initGlfw.window2);
		glClear(GL_COLOR_BUFFER_BIT);
		glDisable(GL_DEPTH_TEST);
		glUseProgram(simpleShaderProgram);
		glBindTexture(GL_TEXTURE_2D, frameBufferTexture);
		glBindBuffer(GL_ARRAY_BUFFER, leftScreenVBO);
			glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (GLvoid*)0);
			glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (GLvoid*)(2 * sizeof(GLfloat)));
			glEnableVertexAttribArray(0);
			glEnableVertexAttribArray(1);
			glDrawArrays(GL_TRIANGLES, 0, 6);
		glBindBuffer(GL_ARRAY_BUFFER, 0);
		glfwSwapBuffers(initGlfw.window2);

		// Check events
		glfwPollEvents();

		// Output information
		++updateTick;
		if (updateTick % 60 == 0)
		{
			cout << "Camera position: (" << cameraPos.x << ", " << cameraPos.y << ", " << cameraPos.z << ")" << endl;
			updateTick = 0;
		}
	}
	glfwTerminate();

	// Clean up after exiting
	glDeleteFramebuffers(1, &frameBufferObject);
	return 0;
}