#include "ModelWorld.h"
#include <RenderingSystem.h>

ModelWorld::ModelWorld()
{
	light.lightDirection = glm::normalize(glm::vec3((cos(lightPitch) * cos(lightYaw)), (sin(lightPitch)), (cos(lightPitch) * sin(lightYaw))));
	light.radiance = 3.f * lightColor;
	RenderingSystem::instance().exposure = 0.45f;

	model = std::make_shared<Actor>("Models/David_Brown_25D_tractor_SF/David_Brown_25D_tractor_SF.obj");
	model->setPosition({ 0,0,0 });
	addActor(model);

	camera.Position = { 0,10,20 };
}

void ModelWorld::cursorPosCallback(GLFWwindow* window, double xpos, double ypos)
{
	static bool firstMouse = true;
	static float lastX;
	static float lastY;

	float xoffset = xpos - lastX;
	float yoffset = lastY - ypos;

	lastX = xpos;
	lastY = ypos;

	if (firstMouse)
	{
		firstMouse = false;
		return;
	}

	if (glfwGetMouseButton(window, GLFW_MOUSE_BUTTON_RIGHT) == GLFW_PRESS)
		camera.processMouseMovement(xoffset, yoffset);
}

void ModelWorld::scrollCallback(GLFWwindow* window, double xoffset, double yoffset)
{
	camera.processMouseScroll(yoffset);
}

void ModelWorld::processInput(GLFWwindow* window, float deltaTime)
{
	if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
		camera.processKeyboard(FORWARD, deltaTime);
	if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
		camera.processKeyboard(BACKWARD, deltaTime);
	if (glfwGetKey(window, GLFW_KEY_A) == GLFW_PRESS)
		camera.processKeyboard(LEFT, deltaTime);
	if (glfwGetKey(window, GLFW_KEY_D) == GLFW_PRESS)
		camera.processKeyboard(RIGHT, deltaTime);
	if (glfwGetKey(window, GLFW_KEY_SPACE) == GLFW_PRESS)
		camera.processKeyboard(UP, deltaTime);
	if (glfwGetKey(window, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS)
		camera.processKeyboard(DOWN, deltaTime);
}