Updated camera class

src/main.cpp

@@ -23,6 +23,9 @@ int height = 800;
 
 bool trapCursor = true;
 
+float movementSpeed = 6.0f;
+float sensitivity = 0.1f;
+
 std::function<void(GLFWwindow*, float, float)> handleMouseCallback;
 
 void LogGlfwError(const char* message)
@@ -64,7 +67,7 @@ void FramebufferSizeCallback(GLFWwindow* window, int w, int h)
 void CursorPosCallback(GLFWwindow* window, double x, double y)
 {
 	if (trapCursor)
-		handleMouseCallback(window, x, y);
+		handleMouseCallback(window, (float)x, (float)y);
 }
 
 void KeyCallback(GLFWwindow* window, int key, int mode, int action, int mods)
@@ -79,13 +82,11 @@ void KeyCallback(GLFWwindow* window, int key, int mode, int action, int mods)
 
 void HandleKeyboard(GLFWwindow* window, Camera& cam, float frametime)
 {
-	static float movementSpeed = 4.5f;
-
 	// Movement
 	if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
-		cam.Move(cam.front * movementSpeed * frametime);
+		cam.Move(glm::normalize(glm::vec3(cam.front.x, 0.0f, cam.front.z)) * movementSpeed * frametime);
 	if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
-		cam.Move(-cam.front * movementSpeed * frametime);
+		cam.Move(-glm::normalize(glm::vec3(cam.front.x, 0.0f, cam.front.z)) * movementSpeed * frametime);
 
 	if (glfwGetKey(window, GLFW_KEY_A) == GLFW_PRESS)
 		cam.Move(-cam.right * movementSpeed * frametime);
@@ -100,20 +101,7 @@ void HandleKeyboard(GLFWwindow* window, Camera& cam, float frametime)
 
 void HandleMouse(GLFWwindow* window, Camera* cam, float x, float y)
 {
-	static const float sensitivity = 0.1f;
-
-	static float pitch = 0.0f;
-	static float yaw = -90.0f;
-
-	pitch += (height / 2 - y) * sensitivity;
-	yaw += (x - width / 2) * sensitivity;
-
-	if (pitch > 89.0f)
-		pitch = 89.0f;
-	else if (pitch < -89.0f)
-		pitch = -89.0f;
-
-	cam->SetRotation(glm::vec2(pitch, yaw));
+	cam->Rotate(sensitivity * glm::vec2((height / 2 - y), (x - width / 2)));
 	
 	glfwSetCursorPos(window, width / 2.0f, height / 2.0f);
 }
@@ -208,26 +196,21 @@ int main(int argc, char** argv)
 	glEnable(GL_DEPTH_TEST);
 
 
-	float lastTime = glfwGetTime();
+	float lastTime = (float)glfwGetTime();
 
 	while (!glfwWindowShouldClose(window))
 	{
 		glfwPollEvents();
 
-		float currentTime = glfwGetTime();
+		float currentTime = (float)glfwGetTime();
 		HandleKeyboard(window, cam, currentTime - lastTime);
 		lastTime = currentTime;
 
-		float t = glfwGetTime();
-
 		static float PI = glm::pi<float>();
 
 		static float fov = glm::radians(45.0f);
 		static float zNear = 0.1f;
 		static float zFar = 100.0f;
-
-		static float orbitSpeed = 1.0f;
-		static float orbitRadius = 10.0f;
 		
 		glClearColor(0.1f, 0.4f, 0.1f, 1.0f);
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -246,6 +229,12 @@ int main(int argc, char** argv)
 			ImGui::SliderFloat("zFar", &zFar, 10.0f, 100.0f);
 		}
 
+		if (ImGui::CollapsingHeader("Movement"))
+		{
+			ImGui::SliderFloat("Speed", &movementSpeed, 0.01f, 10.0f);
+			ImGui::SliderFloat("Sensitivity", &sensitivity, 0.01, 10.0f);
+		}
+
 		ImGui::End();
 
 		perspective = glm::perspective(fov, (float)width/(float)height, zNear, zFar);

src/objects/Camera.cpp

@@ -2,20 +2,8 @@
 
 #include <glm/gtc/matrix_transform.hpp>
 
-Camera::Camera(glm::vec3 position, glm::vec3 direction) :
-	position(position), direction(direction)
-{
-	CalculateCamera();
-}
-
 Camera::Camera(glm::vec3 position, glm::vec2 pitchYaw) :
-	position(position), direction(
-		glm::vec3(
-			cos(glm::radians(pitchYaw.y)) * cos(glm::radians(pitchYaw.x)),
-			sin(glm::radians(pitchYaw.x)),
-			sin(glm::radians(pitchYaw.y)) * cos(glm::radians(pitchYaw.x))
-		)
-	)
+	position(position), rotation(pitchYaw)
 {
 	CalculateCamera();
 }
@@ -34,24 +22,25 @@ void Camera::Move(glm::vec3 movement)
 
 void Camera::SetRotation(glm::vec2 pitchYaw)
 {
-	direction = glm::vec3(
-		cos(glm::radians(pitchYaw.y)) * cos(glm::radians(pitchYaw.x)),
-		sin(glm::radians(pitchYaw.x)),
-		sin(glm::radians(pitchYaw.y)) * cos(glm::radians(pitchYaw.x))
-	);
+	rotation = pitchYaw;
 	CalculateCamera();
 }
 
 void Camera::Rotate(glm::vec2 pitchYaw)
 {
-	direction += glm::vec3(
-		cos(glm::radians(pitchYaw.y)) * cos(glm::radians(pitchYaw.x)),
-		sin(glm::radians(pitchYaw.x)),
-		sin(glm::radians(pitchYaw.y)) * cos(glm::radians(pitchYaw.x))
-	);
+	rotation += pitchYaw;
+	if (rotation.x > 89.0f)
+		rotation.x = 89.0f;
+	else if (rotation.x < -89.0f)
+		rotation.x = -89.0f;
 	CalculateCamera();
 }
 
+void Camera::Constrain(glm::vec4 constraints)
+{
+	rotationConstraints = constraints;
+}
+
 void Camera::Use(const Shader& program)
 {
 	program.SetUniformMat4("view", &viewMatrix[0][0]);
@@ -59,9 +48,12 @@ void Camera::Use(const Shader& program)
 
 void Camera::CalculateCamera()
 {
-	front = glm::normalize(direction);
+	front = glm::normalize(glm::vec3(
+		cos(glm::radians(rotation.y)) * cos(glm::radians(rotation.x)),
+		sin(glm::radians(rotation.x)),
+		sin(glm::radians(rotation.y)) * cos(glm::radians(rotation.x))
+	));
 	right = glm::normalize(glm::cross(front, glm::vec3(0.0f, 1.0f, 0.0f)));
-	// right = glm::normalize(glm::cross(glm::vec3(0.0f, 1.0f, 0.0f), front));
 	up = glm::cross(right, front);
 
 	viewMatrix = glm::lookAt(position, position + front, up);

src/objects/Camera.hpp

@@ -4,11 +4,11 @@
 
 #include "Shader.hpp"
 
+// TODO: reimplement, make it better
 class Camera
 {
 public:
 	Camera() = default;
-	Camera(glm::vec3 position, glm::vec3 direction);
 	Camera(glm::vec3 position, glm::vec2 pitchYaw);
 
 	void SetPosition(glm::vec3 newPos);
@@ -17,6 +17,8 @@ public:
 	void SetRotation(glm::vec2 pitchYaw);
 	void Rotate(glm::vec2 pitchYaw);
 
+	void Constrain(glm::vec4 constraints);
+
 	void Use(const Shader& program);
 
 public:
@@ -25,7 +27,9 @@ public:
 private:
 	void CalculateCamera();
 
-	glm::vec3 position, direction;
+	glm::vec3 position;
+	glm::vec2 rotation;
+	glm::vec4 rotationConstraints;
 
 	glm::mat4 viewMatrix;
 };