Window resizing

src/game.cpp

@@ -54,15 +54,22 @@ void Game::Setup(int w, int h) {
 	m_window = SDL_CreateWindow("Minecraft 1.14.2",
 		SDL_WINDOWPOS_CENTERED,
 		SDL_WINDOWPOS_CENTERED, w, h,
-		SDL_WINDOW_OPENGL);
+		SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE);
 
 	// Create GL context
 	*m_logger << LOGGER_INFO << "Creating OpenGL context" << LOGGER_ENDL;
 	m_glContext = SDL_GL_CreateContext(m_window);
 
-	SDL_WarpMouseInWindow(m_window, w / 2, h / 2);
+	if (IsMouseActive) {
+
 		SDL_SetRelativeMouseMode(SDL_TRUE);
 
+	} else {
+
+		SDL_SetRelativeMouseMode(SDL_FALSE);
+
+	}
+
 	// Set VSYNC swap interval
 	SDL_GL_SetSwapInterval(1);
 
@@ -92,8 +99,8 @@ void Game::Setup(int w, int h) {
 	Texture texture;
 	m_world->TextureID = texture.LoadTextures(BlockDictionary->Textures);
 
-	for (int x = 0; x < 2; x++)
-	for (int y = 0; y < 2; y++) {
+	for (int x = 0; x < 1; x++)
+	for (int y = 0; y < 1; y++) {
 	
 		m_world->Chunks.push_back(std::make_shared<Chunk>(x, y));
 
@@ -111,16 +118,34 @@ void Game::Input(SDL_Event* e) {
 
 	while (SDL_PollEvent(e)) {
 
-		m_activeCamera->HandleMouse(*e);
 
 		switch (e->type) {
 
 			case SDL_KEYDOWN:
 			{
 
-				if (state[SDL_SCANCODE_ESCAPE]) {
+				if (e->key.keysym.sym == SDLK_ESCAPE) {
 					
-					IsDisplayOpen = false;
+					IsMouseActive = !IsMouseActive;
+
+					if (IsMouseActive)
+						SDL_SetRelativeMouseMode(SDL_TRUE);
+					else
+						SDL_SetRelativeMouseMode(SDL_FALSE);
+
+				}
+
+				break;
+
+			}
+
+			case SDL_WINDOWEVENT: 
+			{
+
+				if (e->window.event == SDL_WINDOWEVENT_RESIZED) {
+
+					m_activeCamera->UpdateProjection(e->window.data1, e->window.data2);
+					glViewport(0, 0, e->window.data1, e->window.data2);
 
 				}
 
@@ -139,6 +164,8 @@ void Game::Input(SDL_Event* e) {
 
 		}
 
+		if (IsMouseActive) m_activeCamera->HandleMouse(*e);
+
 	}
 
 	m_activeCamera->MoveCamera(state);

src/game.hpp

@@ -35,6 +35,7 @@ public:
 	void Run();
 
 	bool IsDisplayOpen = false;
+	bool IsMouseActive = true;
 
 private:
 	SDL_Window* m_window = nullptr;

src/renderer/camera.cpp

@@ -10,9 +10,11 @@ Camera::Camera(int w, int h) {
 
 	eyeVector = {};
 	viewMatrix = {};
+
 }
 
 void Camera::UpdateView() {
+
 	// roll can be removed
 	glm::mat4 matRoll = glm::mat4(1.0f); //identity matrix; 
 	glm::mat4 matPitch = glm::mat4(1.0f);//identity matrix
@@ -29,21 +31,35 @@ void Camera::UpdateView() {
 	translate = glm::translate(translate, -eyeVector);
 
 	viewMatrix = rotate * translate;
+
 }
 
 glm::mat4 Camera::GetViewMatrix() {
+
 	return viewMatrix;
+
 }
 
 glm::mat4 Camera::GetProjectionMatrix() {
+
 	return projMatrix;
+
+}
+
+void Camera::UpdateProjection(int width, int height) {
+
+	projMatrix = glm::perspective(glm::radians(45.0f), (float)width / (float)height, 0.1f, 1000.0f);
+
 }
 
 glm::vec3 Camera::GetPos() {
+
 	return eyeVector;
+
 }
 
 void Camera::HandleMouse(SDL_Event e) {
+
 	if (e.type != SDL_MOUSEMOTION)
 		return;
 
@@ -54,9 +70,11 @@ void Camera::HandleMouse(SDL_Event e) {
 	glm::vec2 mouseDelta{ mouseDX, mouseDY };
 
 	MouseMoved(mouseDelta);
+
 }
 
 void Camera::MoveCamera(Uint8* state) {
+
 	float dx = 0;
 	float dz = 0;
 	float dy = 0;
@@ -105,9 +123,11 @@ void Camera::MoveCamera(Uint8* state) {
 	eyeVector.y += dy * CameraSpeed;
 	// update the view matrix
 	UpdateView();
+
 }
 
 void Camera::MouseMoved(glm::vec2 mouseDelta) {
+
 	// note that yaw and pitch must be converted to radians.
 	// this is done in UpdateView() by glm::rotate
 	yaw += MouseSensitivity * (mouseDelta.x/100);
@@ -115,5 +135,6 @@ void Camera::MouseMoved(glm::vec2 mouseDelta) {
 	pitch = glm::clamp<float>(pitch, -M_PI/2, M_PI/2);
 
 	UpdateView();
+
 }
 

src/renderer/camera.hpp

@@ -11,6 +11,8 @@ public:
 
 	glm::mat4 GetViewMatrix();
 	glm::mat4 GetProjectionMatrix();
+	void UpdateProjection(int width, int height);
+
 	glm::vec3 GetPos();
 
 	void HandleMouse(SDL_Event e);