Kayne Ruse
f2d517df9d
read more I've patched this issue by setting motion's elements to CHARACTER_WALKING_SPEED or negative CHARACTER_WALKING_SPEED if they're above or below zero, respectively.
695 lines
20 KiB
C++
695 lines
20 KiB
C++
/* Copyright: (c) Kayne Ruse 2013, 2014
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any source
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* distribution.
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*/
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#include "in_world.hpp"
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#include "channels.hpp"
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#include "utility.hpp"
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#include "terminal_error.hpp"
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#include <stdexcept>
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#include <algorithm>
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#include <cmath>
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#include <iostream>
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#include <sstream>
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//-------------------------
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//these should've come standard
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//-------------------------
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bool operator==(IPaddress lhs, IPaddress rhs) {
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return lhs.host == rhs.host && lhs.port == rhs.port;
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}
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bool operator!=(IPaddress lhs, IPaddress rhs) {
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return !(lhs == rhs);
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}
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//-------------------------
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//Public access members
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//-------------------------
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InWorld::InWorld(int* const argClientIndex, int* const argAccountIndex):
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clientIndex(*argClientIndex),
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accountIndex(*argAccountIndex)
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{
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//setup the utility objects
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buttonImage.LoadSurface(config["dir.interface"] + "button_menu.bmp");
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buttonImage.SetClipH(buttonImage.GetClipH()/3);
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font.LoadSurface(config["dir.fonts"] + "pk_white_8.bmp");
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//pass the utility objects
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disconnectButton.SetImage(&buttonImage);
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disconnectButton.SetFont(&font);
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shutDownButton.SetImage(&buttonImage);
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shutDownButton.SetFont(&font);
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//set the button positions
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disconnectButton.SetX(50);
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disconnectButton.SetY(50 + buttonImage.GetClipH() * 0);
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shutDownButton.SetX(50);
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shutDownButton.SetY(50 + buttonImage.GetClipH() * 1);
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//set the button texts
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disconnectButton.SetText("Disconnect");
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shutDownButton.SetText("Shut Down");
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//load the tilesheet
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//TODO: add the tilesheet to the map system
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//TODO: Tile size and tile sheet should be loaded elsewhere
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tileSheet.Load(config["dir.tilesets"] + "overworld.bmp", 32, 32);
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//Send the character data
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//TODO: login scene, prompt, etc.
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CharacterPacket newPacket;
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newPacket.type = SerialPacketType::CHARACTER_LOAD;
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strncpy(newPacket.handle, config["client.handle"].c_str(), PACKET_STRING_SIZE);
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strncpy(newPacket.avatar, config["client.avatar"].c_str(), PACKET_STRING_SIZE);
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newPacket.accountIndex = accountIndex;
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network.SendTo(Channels::SERVER, &newPacket);
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//query the world state
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memset(&newPacket, 0, MAX_PACKET_SIZE);
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newPacket.type = SerialPacketType::QUERY_CHARACTER_EXISTS;
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network.SendTo(Channels::SERVER, &newPacket);
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//set the camera's values
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camera.width = GetScreen()->w;
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camera.height = GetScreen()->h;
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//debug
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//
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}
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InWorld::~InWorld() {
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//unload the local data
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characterMap.clear();
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monsterMap.clear();
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}
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//-------------------------
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//Frame loop
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//-------------------------
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void InWorld::FrameStart() {
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//
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}
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void InWorld::Update() {
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//create and zero the buffer
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SerialPacket* packetBuffer = reinterpret_cast<SerialPacket*>(new char[MAX_PACKET_SIZE]);
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memset(packetBuffer, 0, MAX_PACKET_SIZE);
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try {
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//suck in and process all waiting packets
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while(network.Receive(packetBuffer)) {
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HandlePacket(packetBuffer);
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}
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}
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catch(terminal_error& e) {
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throw(e);
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}
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catch(std::exception& e) {
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std::cerr << "HandlePacket Error: " << e.what() << std::endl;
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}
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//free the buffer
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delete reinterpret_cast<char*>(packetBuffer);
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//update the map
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UpdateMap();
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//update all entities
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for (auto& it : characterMap) {
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it.second.Update();
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}
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for (auto& it : monsterMap) {
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it.second.Update();
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}
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//update the camera
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if (localCharacter) {
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camera.x = localCharacter->GetOrigin().x - camera.marginX;
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camera.y = localCharacter->GetOrigin().y - camera.marginY;
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}
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//check the connection (heartbeat)
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if (Clock::now() - lastBeat > std::chrono::seconds(3)) {
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if (attemptedBeats > 2) {
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//two-step logout
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SendLogoutRequest();
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SendDisconnectRequest();
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SetNextScene(SceneList::DISCONNECTEDSCREEN);
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ConfigUtility::GetSingleton()["client.disconnectMessage"] = "Error: Lost connection to the server";
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}
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ServerPacket newPacket;
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newPacket.type = SerialPacketType::PING;
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network.SendTo(Channels::SERVER, &newPacket);
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attemptedBeats++;
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lastBeat = Clock::now();
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}
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}
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void InWorld::FrameEnd() {
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//
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}
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void InWorld::RenderFrame() {
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SDL_FillRect(GetScreen(), 0, 0);
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Render(GetScreen());
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SDL_Flip(GetScreen());
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fps.Calculate();
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}
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void InWorld::Render(SDL_Surface* const screen) {
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//draw the map
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for (std::list<Region>::iterator it = regionPager.GetContainer()->begin(); it != regionPager.GetContainer()->end(); it++) {
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tileSheet.DrawRegionTo(screen, &(*it), camera.x, camera.y);
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}
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//draw the entities
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for (auto& it : characterMap) {
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//TODO: depth ordering
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it.second.DrawTo(screen, camera.x, camera.y);
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}
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for (auto& it : monsterMap) {
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//TODO: depth ordering
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it.second.DrawTo(screen, camera.x, camera.y);
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}
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//draw UI
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disconnectButton.DrawTo(screen);
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shutDownButton.DrawTo(screen);
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font.DrawStringTo(to_string_custom(fps.GetFrameRate()), screen, 0, 0);
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}
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//-------------------------
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//Event handlers
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//-------------------------
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void InWorld::QuitEvent() {
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//two-step logout
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SendLogoutRequest();
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SendDisconnectRequest();
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SetNextScene(SceneList::QUIT);
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}
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void InWorld::MouseMotion(SDL_MouseMotionEvent const& motion) {
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disconnectButton.MouseMotion(motion);
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shutDownButton.MouseMotion(motion);
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}
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void InWorld::MouseButtonDown(SDL_MouseButtonEvent const& button) {
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disconnectButton.MouseButtonDown(button);
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shutDownButton.MouseButtonDown(button);
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}
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void InWorld::MouseButtonUp(SDL_MouseButtonEvent const& button) {
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if (disconnectButton.MouseButtonUp(button) == Button::State::HOVER && button.button == SDL_BUTTON_LEFT) {
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SendLogoutRequest();
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}
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if (shutDownButton.MouseButtonUp(button) == Button::State::HOVER && button.button == SDL_BUTTON_LEFT) {
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SendShutdownRequest();
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}
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}
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void InWorld::KeyDown(SDL_KeyboardEvent const& key) {
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//hotkeys
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switch(key.keysym.sym) {
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case SDLK_ESCAPE:
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//the escape key should actually control menus and stuff
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SendLogoutRequest();
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break;
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}
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//character movement
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if (!localCharacter) {
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return;
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}
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Vector2 motion = localCharacter->GetMotion();
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switch(key.keysym.sym) {
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case SDLK_w:
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motion.y -= CHARACTER_WALKING_SPEED;
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break;
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case SDLK_a:
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motion.x -= CHARACTER_WALKING_SPEED;
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break;
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case SDLK_s:
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motion.y += CHARACTER_WALKING_SPEED;
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break;
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case SDLK_d:
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motion.x += CHARACTER_WALKING_SPEED;
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break;
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}
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//handle diagonals
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if (motion.x != 0 && motion.y != 0) {
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motion *= CHARACTER_WALKING_MOD;
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}
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//set the info
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localCharacter->SetMotion(motion);
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localCharacter->CorrectSprite();
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SendLocalCharacterMotion();
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}
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void InWorld::KeyUp(SDL_KeyboardEvent const& key) {
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//character movement
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if (!localCharacter) {
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return;
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}
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Vector2 motion = localCharacter->GetMotion();
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switch(key.keysym.sym) {
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case SDLK_w:
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motion.y = std::min(0.0, motion.y += CHARACTER_WALKING_SPEED);
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break;
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case SDLK_a:
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motion.x = std::min(0.0, motion.x += CHARACTER_WALKING_SPEED);
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break;
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case SDLK_s:
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motion.y = std::max(0.0, motion.y -= CHARACTER_WALKING_SPEED);
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break;
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case SDLK_d:
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motion.x = std::max(0.0, motion.x -= CHARACTER_WALKING_SPEED);
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break;
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}
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//BUGFIX: reset cardinal direction speed on key release
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if (motion.x > 0) {
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motion.x = CHARACTER_WALKING_SPEED;
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}
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else if (motion.x < 0) {
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motion.x = -CHARACTER_WALKING_SPEED;
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}
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if (motion.y > 0) {
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motion.y = CHARACTER_WALKING_SPEED;
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}
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else if (motion.y < 0) {
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motion.y = -CHARACTER_WALKING_SPEED;
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}
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//handle diagonals
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if (motion.x != 0 && motion.y != 0) {
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motion *= CHARACTER_WALKING_MOD;
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}
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//set the info
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localCharacter->SetMotion(motion);
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localCharacter->CorrectSprite();
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SendLocalCharacterMotion();
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}
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//-------------------------
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//Basic connections
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//-------------------------
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void InWorld::HandlePacket(SerialPacket* const argPacket) {
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switch(argPacket->type) {
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//heartbeat system
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case SerialPacketType::PING:
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HandlePing(static_cast<ServerPacket*>(argPacket));
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break;
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case SerialPacketType::PONG:
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HandlePong(static_cast<ServerPacket*>(argPacket));
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break;
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//game server connections
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case SerialPacketType::LOGOUT_RESPONSE:
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HandleLogoutResponse(static_cast<ClientPacket*>(argPacket));
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break;
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case SerialPacketType::DISCONNECT_RESPONSE:
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HandleDisconnectResponse(static_cast<ClientPacket*>(argPacket));
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break;
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case SerialPacketType::DISCONNECT_FORCED:
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HandleDisconnectForced(static_cast<ClientPacket*>(argPacket));
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break;
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//map management
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case SerialPacketType::REGION_CONTENT:
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HandleRegionContent(static_cast<RegionPacket*>(argPacket));
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break;
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//character management
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case SerialPacketType::CHARACTER_CREATE:
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HandleCharacterCreate(static_cast<CharacterPacket*>(argPacket));
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break;
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case SerialPacketType::CHARACTER_DELETE:
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HandleCharacterDelete(static_cast<CharacterPacket*>(argPacket));
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break;
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case SerialPacketType::QUERY_CHARACTER_EXISTS:
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HandleCharacterQueryExists(static_cast<CharacterPacket*>(argPacket));
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break;
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//character movement
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case SerialPacketType::CHARACTER_SET_ROOM:
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HandleCharacterSetRoom(static_cast<CharacterPacket*>(argPacket));
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break;
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case SerialPacketType::CHARACTER_SET_ORIGIN:
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HandleCharacterSetOrigin(static_cast<CharacterPacket*>(argPacket));
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break;
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case SerialPacketType::CHARACTER_SET_MOTION:
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HandleCharacterSetMotion(static_cast<CharacterPacket*>(argPacket));
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break;
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//rejection messages
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case SerialPacketType::REGION_REJECTION:
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case SerialPacketType::CHARACTER_REJECTION:
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throw(terminal_error(static_cast<TextPacket*>(argPacket)->text));
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break;
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case SerialPacketType::SHUTDOWN_REJECTION:
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throw(std::runtime_error(static_cast<TextPacket*>(argPacket)->text));
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break;
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//errors
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default: {
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std::ostringstream msg;
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msg << "Unknown SerialPacketType encountered in InWorld: " << static_cast<int>(argPacket->type);
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throw(std::runtime_error(msg.str()));
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}
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break;
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}
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}
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void InWorld::HandlePing(ServerPacket* const argPacket) {
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ServerPacket newPacket;
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newPacket.type = SerialPacketType::PONG;
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network.SendTo(argPacket->srcAddress, &newPacket);
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}
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void InWorld::HandlePong(ServerPacket* const argPacket) {
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if (*network.GetIPAddress(Channels::SERVER) != argPacket->srcAddress) {
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throw(std::runtime_error("Heartbeat message received from an unknown source"));
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}
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attemptedBeats = 0;
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lastBeat = Clock::now();
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}
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//-------------------------
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//Connection control
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//-------------------------
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void InWorld::SendLogoutRequest() {
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ClientPacket newPacket;
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//send a logout request
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newPacket.type = SerialPacketType::LOGOUT_REQUEST;
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newPacket.accountIndex = accountIndex;
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network.SendTo(Channels::SERVER, &newPacket);
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}
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void InWorld::SendDisconnectRequest() {
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ClientPacket newPacket;
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//send a disconnect request
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newPacket.type = SerialPacketType::DISCONNECT_REQUEST;
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newPacket.clientIndex = clientIndex;
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network.SendTo(Channels::SERVER, &newPacket);
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}
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void InWorld::SendShutdownRequest() {
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ClientPacket newPacket;
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//send a shutdown request
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newPacket.type = SerialPacketType::SHUTDOWN_REQUEST;
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newPacket.accountIndex = accountIndex;
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network.SendTo(Channels::SERVER, &newPacket);
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}
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void InWorld::HandleLogoutResponse(ClientPacket* const argPacket) {
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accountIndex = -1;
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characterIndex = -1;
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//reset the camera
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camera.x = camera.y = 0;
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camera.marginX = camera.marginY = 0;
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SendDisconnectRequest();
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}
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void InWorld::HandleDisconnectResponse(ClientPacket* const argPacket) {
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SetNextScene(SceneList::DISCONNECTEDSCREEN);
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ConfigUtility::GetSingleton()["client.disconnectMessage"] = "You have successfully logged out";
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}
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void InWorld::HandleDisconnectForced(ClientPacket* const argPacket) {
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//clear the local data
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accountIndex = -1;
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characterIndex = -1;
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//reset the camera
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camera.x = camera .y = 0;
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camera.marginX = camera.marginY = 0;
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SetNextScene(SceneList::DISCONNECTEDSCREEN);
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ConfigUtility::GetSingleton()["client.disconnectMessage"] = "You have been forcibly disconnected by the server";
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}
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//-------------------------
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//map management
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//-------------------------
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void InWorld::SendRegionRequest(int roomIndex, int x, int y) {
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RegionPacket packet;
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//pack the region's data
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packet.type = SerialPacketType::REGION_REQUEST;
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packet.roomIndex = roomIndex;
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packet.x = x;
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packet.y = y;
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network.SendTo(Channels::SERVER, &packet);
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}
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void InWorld::HandleRegionContent(RegionPacket* const argPacket) {
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//replace existing regions
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regionPager.UnloadRegion(argPacket->x, argPacket->y);
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regionPager.PushRegion(argPacket->region);
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//clean up after the serial code
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delete argPacket->region;
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argPacket->region = nullptr;
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}
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void InWorld::UpdateMap() {
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if (roomIndex == -1) {
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return;
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}
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//these represent the zone of regions that the client needs loaded, including the mandatory buffers (+1/-1)
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int xStart = snapToBase(REGION_WIDTH, camera.x/tileSheet.GetTileW()) - REGION_WIDTH;
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int xEnd = snapToBase(REGION_WIDTH, (camera.x+camera.width)/tileSheet.GetTileW()) + REGION_WIDTH;
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int yStart = snapToBase(REGION_HEIGHT, camera.y/tileSheet.GetTileH()) - REGION_HEIGHT;
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int yEnd = snapToBase(REGION_HEIGHT, (camera.y+camera.height)/tileSheet.GetTileH()) + REGION_HEIGHT;
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//prune distant regions
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regionPager.GetContainer()->remove_if([&](Region const& region) -> bool {
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return region.GetX() < xStart || region.GetX() > xEnd || region.GetY() < yStart || region.GetY() > yEnd;
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});
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//request empty regions within this zone
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for (int i = xStart; i <= xEnd; i += REGION_WIDTH) {
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for (int j = yStart; j <= yEnd; j += REGION_HEIGHT) {
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if (!regionPager.FindRegion(i, j)) {
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SendRegionRequest(roomIndex, i, j);
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}
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}
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}
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}
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//-------------------------
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//entity management
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//-------------------------
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//NOTE: preexisting characters will result in query responses
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//NOTE: new characters will result in create messages
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//NOTE: this client's character will exist in both (skipped)
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void InWorld::HandleCharacterCreate(CharacterPacket* const argPacket) {
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//prevent double message
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if (characterMap.find(argPacket->characterIndex) != characterMap.end()) {
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std::ostringstream msg;
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msg << "Double character creation event; ";
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msg << "Index: " << argPacket->characterIndex << "; ";
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msg << "Handle: " << argPacket->handle;
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throw(std::runtime_error(msg.str()));
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}
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//implicity create and retrieve the entity
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BaseCharacter* character = &characterMap[argPacket->characterIndex];
|
|
|
|
//fill the character's info
|
|
character->SetOrigin(argPacket->origin);
|
|
character->SetMotion(argPacket->motion);
|
|
character->SetBounds({CHARACTER_BOUNDS_X, CHARACTER_BOUNDS_Y, CHARACTER_BOUNDS_WIDTH, CHARACTER_BOUNDS_HEIGHT});
|
|
character->SetHandle(argPacket->handle);
|
|
character->SetAvatar(argPacket->avatar);
|
|
character->SetOwner(argPacket->accountIndex);
|
|
character->CorrectSprite();
|
|
|
|
//check for this player's character
|
|
if (character->GetOwner() == accountIndex) {
|
|
localCharacter = static_cast<LocalCharacter*>(character);
|
|
|
|
//focus the camera on this character
|
|
camera.marginX = (camera.width / 2 - localCharacter->GetSprite()->GetImage()->GetClipW() / 2);
|
|
camera.marginY = (camera.height/ 2 - localCharacter->GetSprite()->GetImage()->GetClipH() / 2);
|
|
|
|
//focus on this character's info
|
|
characterIndex = argPacket->characterIndex;
|
|
roomIndex = argPacket->roomIndex;
|
|
}
|
|
|
|
//debug
|
|
std::cout << "Create, total: " << characterMap.size() << std::endl;
|
|
}
|
|
|
|
void InWorld::HandleCharacterDelete(CharacterPacket* const argPacket) {
|
|
//ignore if this character doesn't exist
|
|
std::map<int, BaseCharacter>::iterator characterIt = characterMap.find(argPacket->characterIndex);
|
|
if (characterIt == characterMap.end()) {
|
|
//debug
|
|
std::cout << "Ignoring character deletion" << std::endl;
|
|
return;
|
|
}
|
|
|
|
//check for this player's character
|
|
if ((*characterIt).second.GetOwner() == accountIndex) {
|
|
localCharacter = nullptr;
|
|
|
|
//clear the camera
|
|
camera.marginX = 0;
|
|
camera.marginY = 0;
|
|
|
|
//clear the room
|
|
roomIndex = -1;
|
|
}
|
|
|
|
//remove this character
|
|
characterMap.erase(characterIt);
|
|
|
|
//debug
|
|
std::cout << "Delete, total: " << characterMap.size() << std::endl;
|
|
}
|
|
|
|
void InWorld::HandleCharacterQueryExists(CharacterPacket* const argPacket) {
|
|
//prevent a double message about this player's character
|
|
if (argPacket->accountIndex == accountIndex) {
|
|
return;
|
|
}
|
|
|
|
//ignore characters in a different room (sub-optimal)
|
|
if (argPacket->roomIndex != roomIndex) {
|
|
return;
|
|
}
|
|
|
|
//implicitly construct the character if it doesn't exist
|
|
BaseCharacter* character = &characterMap[argPacket->characterIndex];
|
|
|
|
//set/update the character's info
|
|
character->SetOrigin(argPacket->origin);
|
|
character->SetMotion(argPacket->motion);
|
|
character->SetBounds({CHARACTER_BOUNDS_X, CHARACTER_BOUNDS_Y, CHARACTER_BOUNDS_WIDTH, CHARACTER_BOUNDS_HEIGHT});
|
|
character->SetHandle(argPacket->handle);
|
|
character->SetAvatar(argPacket->avatar);
|
|
character->SetOwner(argPacket->accountIndex);
|
|
character->CorrectSprite();
|
|
|
|
//debug
|
|
std::cout << "Query, total: " << characterMap.size() << std::endl;
|
|
}
|
|
|
|
void InWorld::HandleCharacterSetRoom(CharacterPacket* const argPacket) {
|
|
//someone else's character
|
|
if (argPacket->characterIndex != characterIndex) {
|
|
characterMap.erase(argPacket->characterIndex);
|
|
return;
|
|
}
|
|
|
|
//this character is moving between rooms
|
|
roomIndex = argPacket->roomIndex;
|
|
|
|
//set the character's info
|
|
localCharacter->SetOrigin(argPacket->origin);
|
|
localCharacter->SetMotion(argPacket->motion);
|
|
localCharacter->CorrectSprite();
|
|
|
|
//clear the old room's data
|
|
regionPager.UnloadAll();
|
|
monsterMap.clear();
|
|
|
|
//use the jenky pattern for std::map to skip this player's character
|
|
for (std::map<int, BaseCharacter>::iterator it = characterMap.begin(); it != characterMap.end(); /* EMPTY */ ) {
|
|
if (it->first != characterIndex) {
|
|
it = characterMap.erase(it);
|
|
}
|
|
else {
|
|
++it;
|
|
}
|
|
}
|
|
|
|
//request the info on characters in this room
|
|
CharacterPacket newPacket;
|
|
newPacket.type = SerialPacketType::QUERY_CHARACTER_EXISTS;
|
|
newPacket.roomIndex = roomIndex;
|
|
network.SendTo(Channels::SERVER, &newPacket);
|
|
}
|
|
|
|
void InWorld::HandleCharacterSetOrigin(CharacterPacket* const argPacket) {
|
|
//check that this character exists
|
|
std::map<int, BaseCharacter>::iterator characterIt = characterMap.find(argPacket->characterIndex);
|
|
if (characterIt != characterMap.end()) {
|
|
//set the origin and motion
|
|
characterIt->second.SetOrigin(argPacket->origin);
|
|
characterIt->second.SetMotion(argPacket->motion);
|
|
characterIt->second.CorrectSprite();
|
|
}
|
|
}
|
|
|
|
void InWorld::HandleCharacterSetMotion(CharacterPacket* const argPacket) {
|
|
//check that this character exists
|
|
std::map<int, BaseCharacter>::iterator characterIt = characterMap.find(argPacket->characterIndex);
|
|
if (characterIt != characterMap.end()) {
|
|
//set the origin and motion
|
|
characterIt->second.SetOrigin(argPacket->origin);
|
|
characterIt->second.SetMotion(argPacket->motion);
|
|
characterIt->second.CorrectSprite();
|
|
}
|
|
}
|
|
|
|
//-------------------------
|
|
//player movement
|
|
//-------------------------
|
|
|
|
//TODO: add a "movement" packet type
|
|
void InWorld::SendLocalCharacterMotion() {
|
|
CharacterPacket newPacket;
|
|
newPacket.type = SerialPacketType::CHARACTER_SET_MOTION;
|
|
|
|
newPacket.accountIndex = accountIndex;
|
|
newPacket.characterIndex = characterIndex;
|
|
newPacket.roomIndex = roomIndex;
|
|
newPacket.origin = localCharacter->GetOrigin();
|
|
newPacket.motion = localCharacter->GetMotion();
|
|
|
|
network.SendTo(Channels::SERVER, &newPacket);
|
|
} |