ModuleInput.cpp

#include "Globals.h"
#include "Application.h"
#include "ModuleInput.h"

#define MAX_KEYS 300

ModuleInput::ModuleInput(Application* app, bool start_enabled) : Module(app, start_enabled)
{
	keyboard = new KEY_STATE[MAX_KEYS];
	memset(keyboard, KEY_IDLE, sizeof(KEY_STATE) * MAX_KEYS);
}

// Destructor
ModuleInput::~ModuleInput()
{
	delete[] keyboard;
}

// Called before render is available
bool ModuleInput::Init()
{
	LOG("Init SDL input event system");
	LOGC("Starting I/O module");
	bool ret = true;
	quit = false;
	SDL_Init(0);

	if (SDL_InitSubSystem(SDL_INIT_EVENTS) < 0)
	{
		LOG("SDL_EVENTS could not initialize! SDL_Error: %s\n", SDL_GetError());

		ret = false;
	}

	return ret;
}

// Called every draw update
update_status ModuleInput::PreUpdate(float dt)
{
	SDL_PumpEvents();

	const Uint8* keys = SDL_GetKeyboardState(NULL);

	for (int i = 0; i < MAX_KEYS; ++i)
	{
		if (keys[i] == 1)
		{
			if (keyboard[i] == KEY_IDLE)
				keyboard[i] = KEY_DOWN;
			else
				keyboard[i] = KEY_REPEAT;
		}
		else
		{
			if (keyboard[i] == KEY_REPEAT || keyboard[i] == KEY_DOWN)
				keyboard[i] = KEY_UP;
			else
				keyboard[i] = KEY_IDLE;
		}
	}

	Uint32 buttons = SDL_GetMouseState(&mouse_x, &mouse_y);

	mouse_x /= SCREEN_SIZE;
	mouse_y /= SCREEN_SIZE;
	mouse_z = 0;

	for (int i = 0; i < 5; ++i)
	{
		if (buttons & SDL_BUTTON(i))
		{
			if (mouse_buttons[i] == KEY_IDLE)
				mouse_buttons[i] = KEY_DOWN;
			else
				mouse_buttons[i] = KEY_REPEAT;
		}
		else
		{
			if (mouse_buttons[i] == KEY_REPEAT || mouse_buttons[i] == KEY_DOWN)
				mouse_buttons[i] = KEY_UP;
			else
				mouse_buttons[i] = KEY_IDLE;
		}
	}

	mouse_x_motion = mouse_y_motion = 0;

	SDL_Event e;
	while (SDL_PollEvent(&e))
	{
		switch (e.type)
		{
			case SDL_QUIT:
				quit = true;
				break;
			case SDL_DROPFILE:
				if (App->gui->game->mouseHover()) {
					char* dropped_filedir;

					dropped_filedir = e.drop.file;
					if (dropped_filedir != nullptr) {
						// Shows directory of dropped file

						App->resources->ImportFile(dropped_filedir,true);
						App->gui->filesystem->UpdateAssets();

						SDL_free(dropped_filedir);    // Free dropped_filedir memory
					}
				}
				break;
			case SDL_MOUSEWHEEL:
				mouse_z = e.wheel.y;
				break;

			case SDL_MOUSEMOTION:
				mouse_x = e.motion.x / SCREEN_SIZE;
				mouse_y = e.motion.y / SCREEN_SIZE;

				mouse_x_motion = e.motion.xrel / SCREEN_SIZE;
				mouse_y_motion = e.motion.yrel / SCREEN_SIZE;
				break;


			case SDL_WINDOWEVENT:
				if (e.window.event == SDL_WINDOWEVENT_RESIZED) {
					App->renderer3D->OnResize(e.window.data1, e.window.data2);
					App->gui->game->fbo->CleanUp();
					App->gui->game->fbo->Start(e.window.data1, e.window.data2);
				}
				break;
		}

		ImGui_ImplSDL2_ProcessEvent(&e);
	}

	if (quit == true)
		return UPDATE_STOP;

	return UPDATE_CONTINUE;
}

// Called before quitting
bool ModuleInput::CleanUp()
{
	LOG("Quitting SDL input event subsystem");
	SDL_QuitSubSystem(SDL_INIT_EVENTS);
	return true;
}