Rearrenged the directory tree

I just _had_ to get rid of that horrible libs/ directory. Now most of the
graphical stuff is in client/, but I'll create more subdirectories so that
they're not getting in the way.
This commit is contained in:
Kayne Ruse
2013-07-15 14:58:04 +10:00
parent 28b491587c
commit 43dadcdbb8
36 changed files with 51 additions and 132 deletions
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef CLIENTENTRY_HPP_
#define CLIENTENTRY_HPP_
#include "SDL/SDL_net.h"
struct ClientEntry {
int index;
IPaddress address;
};
#endif
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#include "config_utility.hpp"
#include <stdexcept>
#include <fstream>
using namespace std;
void ConfigUtility::Load(string fname) {
ifstream is(fname);
if (!is.is_open()) {
throw(runtime_error("Failed to open config file"));
}
string key, val;
for (;;) { //forever
//eat whitespace
while(isspace(is.peek()))
is.ignore();
//end of file
if (is.eof())
break;
//skip comment lines
if (is.peek() == '#') {
while(is.peek() != '\n' && !is.eof()) {
is.ignore();
}
continue;
}
//read in the pair
getline(is, key,'=');
getline(is, val);
//trim the strings at the start & end
while(key.size() && isspace(*key.begin())) key.erase(0, 1);
while(val.size() && isspace(*val.begin())) val.erase(0, 1);
while(key.size() && isspace(*(key.end()-1))) key.erase(key.end() - 1);
while(val.size() && isspace(*(val.end()-1))) val.erase(val.end() - 1);
//allow empty/wiped values
if (key.size() == 0) {
continue;
}
//save the pair
table[key] = val;
}
is.close();
}
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef CONFIGUTILITY_HPP_
#define CONFIGUTILITY_HPP_
#include <map>
#include <string>
#include <cstdlib>
class ConfigUtility {
public:
ConfigUtility() {}
ConfigUtility(std::string s) { Load(s); }
void Load(std::string fname);
std::string String(std::string s) {
return table[s];
}
const char* CString(std::string s) {
return table[s].c_str();
}
int Integer(std::string s) {
return atoi(table[s].c_str());
}
double Double(std::string s) {
return atof(table[s].c_str());
}
bool Boolean(std::string s) {
return table[s] == "true";
}
std::string& operator[](std::string s) {
return table[s];
}
int Int(std::string s) {
return Integer(s);
}
int Bool(std::string s) {
return Boolean(s);
}
std::map<std::string, std::string>* GetMap() {
return &table;
}
private:
std::map<std::string, std::string> table;
};
#endif
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef DEFINES_HPP_
#define DEFINES_HPP_
#define GAME_CHANNEL 0
#define CHAT_CHANNEL 1
#define WALKING_SPEED 140
enum class CardinalDirection {
NORTH, SOUTH, EAST, WEST
};
#endif
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#config
LOCALLIBS=
LIB=
INCLUDES=
CXXFLAGS+=-std=c++11 -DDEBUG $(addprefix -I,$(INCLUDES))
#source
SRC=$(wildcard *.cpp)
#objects
OBJDIR=obj
OBJ=$(addprefix $(OBJDIR)/,$(SRC:.cpp=.o))
#output
OUTDIR=../lib
OUT=$(addprefix $(OUTDIR)/,libCommon.a)
#targets
all: $(OBJ) $(OUT)
ar -crs $(OUT) $(OBJ)
$(OBJ): | $(OBJDIR)
$(OUT): | $(OUTDIR)
$(OBJDIR):
mkdir $(OBJDIR)
$(OUTDIR):
mkdir $(OUTDIR)
$(OBJDIR)/%.o: %.cpp
$(CXX) $(CXXFLAGS) -c -o $@ $<
clean:
$(RM) *.o *.a *.exe
rebuild: clean all
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#include "network_queue.hpp"
#include "singleton.hpp"
#include "udp_network_utility.hpp"
#include "SDL/SDL_thread.h"
#include <stdexcept>
#include <deque>
static SDL_sem* lock = SDL_CreateSemaphore(1);
static SDL_Thread* queueThread = nullptr;
static std::deque<Packet> queue;
static bool running = false;
static int networkQueue(void*) {
UDPNetworkUtility* netUtil = Singleton<UDPNetworkUtility>::Get();
while(running) {
SDL_SemWait(lock);
while(netUtil->Receive()) {
Packet p;
memcpy(&p, netUtil->GetInData(), sizeof(Packet));
p.meta.address = netUtil->GetInPacket()->address;
queue.push_back(p);
}
SDL_SemPost(lock);
SDL_Delay(10);
}
return 0;
}
void beginQueueThread() {
if (running) {
return;
}
running = true;
if (!(queueThread = SDL_CreateThread(networkQueue, nullptr))) {
throw(std::runtime_error("Failed to create the network thread"));
}
}
void endQueueThread() {
if (!running) {
return;
}
running = false;
SDL_WaitThread(queueThread, nullptr);
queueThread = nullptr;
}
void killQueueThread() {
if (!running) {
return;
}
running = false;
SDL_KillThread(queueThread);
queueThread = nullptr;
}
Packet peekNetworkPacket() {
SDL_SemWait(lock);
Packet p;
if (queue.size() > 0) {
Packet p = queue[0];
}
SDL_SemPost(lock);
return p;
}
Packet popNetworkPacket() {
SDL_SemWait(lock);
Packet p;
if (queue.size() > 0) {
p = queue[0];
queue.pop_front();
}
SDL_SemPost(lock);
return p;
}
void flushNetworkQueue() {
UDPNetworkUtility* netUtil = Singleton<UDPNetworkUtility>::Get();
SDL_SemWait(lock);
while(netUtil->Receive());
queue.clear();
SDL_SemPost(lock);
}
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef NETWORKQUEUE_HPP_
#define NETWORKQUEUE_HPP_
#include "packet.hpp"
void beginQueueThread();
void endQueueThread();
void killQueueThread();
Packet peekNetworkPacket();
Packet popNetworkPacket();
void flushNetworkQueue();
#endif
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef PACKETTYPE_HPP_
#define PACKETTYPE_HPP_
#include "vector2.hpp"
#include "SDL/SDL_net.h"
#define PACKET_STRING_SIZE 100
#pragma pack(push, 0)
union Packet {
//the type of packet being sent
enum class Type {
NONE = 0,
PING = 1,
PONG = 2,
BROADCAST_REQUEST = 3,
BROADCAST_RESPONSE = 4,
JOIN_REQUEST = 5,
JOIN_RESPONSE = 6,
DISCONNECT = 7,
SYNCHRONIZE = 8,
PLAYER_NEW = 9,
PLAYER_DELETE = 10,
PLAYER_UPDATE = 11,
};
//metadata on the packet itself
struct Metadata {
Type type;
IPaddress address;
int clientIndex;
}meta;
//information about the server
struct ServerInformation {
Metadata meta;
//TODO: version info
char name[PACKET_STRING_SIZE];
//TODO: player count
}serverInfo;
//information about a specific player
struct PlayerInformation {
Metadata meta;
int index;
char handle[PACKET_STRING_SIZE];
char avatar[PACKET_STRING_SIZE];
Vector2 position;
Vector2 motion;
//TODO Playerdata
}playerInfo;
//zero the packet
Packet() {
meta.type = Type::NONE;
meta.address.host = 0;
meta.address.port = 0;
meta.clientIndex = -1;
};
};
#pragma pack(pop)
#endif
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef PLAYERENTRY_HPP_
#define PLAYERENTRY_HPP_
#include "vector2.hpp"
#include <string>
struct PlayerEntry {
int index;
int clientIndex;
std::string handle;
std::string avatar;
Vector2 position;
Vector2 motion;
};
#endif
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef SERVERENTRY_HPP_
#define SERVERENTRY_HPP_
#include "SDL/SDL_net.h"
#include <string>
struct ServerEntry {
std::string name;
IPaddress address;
//TODO: player count
};
#endif
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef SINGLETON_HPP_
#define SINGLETON_HPP_
template<typename T>
class Singleton {
public:
static T* Get() {
return &instance;
}
private:
static T instance;
};
template<typename T>
T Singleton<T>::instance;
#endif
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#include "udp_network_utility.hpp"
#include <stdexcept>
void UDPNetworkUtility::Open(int port, int packSize) {
if (!(socket = SDLNet_UDP_Open(port))) {
Close();
throw(std::runtime_error("Failed to open a UDP socket"));
}
if (!(packOut = SDLNet_AllocPacket(packSize))) {
Close();
throw(std::runtime_error("Failed to allocate the out packet"));
}
if (!(packIn = SDLNet_AllocPacket(packSize))) {
Close();
throw(std::runtime_error("Failed to allocate the in packet"));
}
}
void UDPNetworkUtility::Close() {
SDLNet_UDP_Close(socket);
SDLNet_FreePacket(packOut);
SDLNet_FreePacket(packIn);
socket = nullptr;
packOut = nullptr;
packIn = nullptr;
}
int UDPNetworkUtility::Bind(const char* ip, int port, int channel) {
IPaddress add;
if (SDLNet_ResolveHost(&add, ip, port) == -1) {
throw(std::runtime_error("Failed to resolve a host"));
}
return Bind(&add, channel);
}
int UDPNetworkUtility::Bind(IPaddress* add, int channel) {
int ret = SDLNet_UDP_Bind(socket, channel, add);
if (ret == -1) {
throw(std::runtime_error("Failed to bind to a channel"));
}
return ret;
}
void UDPNetworkUtility::Unbind(int channel) {
SDLNet_UDP_Unbind(socket, channel);
}
int UDPNetworkUtility::Send(const char* ip, int port, void* data, int len) {
IPaddress add;
if (SDLNet_ResolveHost(&add, ip, port) == -1) {
throw(std::runtime_error("Failed to resolve a host"));
}
Send(&add, data, len);
}
int UDPNetworkUtility::Send(IPaddress* add, void* data, int len) {
if (len > packOut->maxlen) {
throw(std::runtime_error("Failed to copy the data into the packet"));
}
memset(packOut->data, 0, packOut->maxlen);
memcpy(packOut->data, data, len);
packOut->len = len;
packOut->address = *add;
int ret = SDLNet_UDP_Send(socket, -1, packOut);
if (ret <= 0) {
throw(std::runtime_error("Failed to send a packet"));
}
return ret;
}
int UDPNetworkUtility::Send(int channel, void* data, int len) {
if (len > packOut->maxlen) {
throw(std::runtime_error("Failed to copy the data into the packet"));
}
memset(packOut->data, 0, packOut->maxlen);
memcpy(packOut->data, data, len);
packOut->len = len;
int ret = SDLNet_UDP_Send(socket, channel, packOut);
if (ret <= 0) {
throw(std::runtime_error("Failed to send a packet"));
}
return ret;
}
int UDPNetworkUtility::SendAll(void* data, int len) {
if (len > packOut->maxlen) {
throw(std::runtime_error("Failed to copy the data into the packet"));
}
memset(packOut->data, 0, packOut->maxlen);
memcpy(packOut->data, data, len);
packOut->len = len;
int sent = 0;
//send to all bound channels
for (int i = 0; i < SDLNET_MAX_UDPCHANNELS; i++) {
if (SDLNet_UDP_GetPeerAddress(socket, i)) {
sent += SDLNet_UDP_Send(socket, i, packOut);
}
}
return sent;
}
int UDPNetworkUtility::Receive() {
memset(packIn->data, 0, packIn->maxlen);
int ret = SDLNet_UDP_Recv(socket, packIn);
if (ret < 0) {
throw(std::runtime_error("Unknown network error occured"));
}
return ret;
}
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef UDPNETWORKUTILITY_HPP_
#define UDPNETWORKUTILITY_HPP_
#include "SDL/SDL_net.h"
class UDPNetworkUtility {
public:
UDPNetworkUtility() = default;
~UDPNetworkUtility() = default;
void Open(int port, int packSize);
void Close();
//bind to an available channel
int Bind(const char* ip, int port) {
Bind(ip, port, -1);
}
int Bind(IPaddress* add) {
Bind(add, -1);
}
//bind to certain channel
int Bind(const char* ip, int port, int channel);
int Bind(IPaddress* add, int channel);
void Unbind(int channel);
IPaddress* GetIPAddress(int channel) {
return SDLNet_UDP_GetPeerAddress(socket, channel);
}
int Send(const char* ip, int port, void* data, int len);
int Send(IPaddress* add, void* data, int len);
int Send(int channel, void* data, int len);
int SendAll(void* data, int len);
int Receive();
void* GetOutData() const {
return reinterpret_cast<void*>(packOut->data);
};
void* GetInData() const {
return reinterpret_cast<void*>(packIn->data);
};
UDPpacket* GetOutPacket() const {
return packOut;
}
UDPpacket* GetInPacket() const {
return packIn;
}
UDPsocket GetSocket() const {
return socket;
}
private:
UDPsocket socket = nullptr;
UDPpacket* packOut = nullptr;
UDPpacket* packIn = nullptr;
};
#endif
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#include "utilities.hpp"
#include <cstdio>
std::string itos(int i) {
char buffer[20];
snprintf(buffer, 20, "%d", i);
return std::string(buffer);
}
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef UTILITIES_HPP_
#define UTILITIES_HPP_
#include <string>
std::string itos(int i);
#endif
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/* Copyright: (c) Kayne Ruse 2013
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source
* distribution.
*/
#ifndef VECTOR2_HPP_
#define VECTOR2_HPP_
#include <stdexcept>
#include <cmath>
class Vector2 {
public:
double x = 0, y = 0;
Vector2() = default;
double Length() const {
return sqrt(x*x+y*y);
}
double SquaredLength() const {
return x*x+y*y;
}
double operator[](size_t i) {
if (i >= 2)
throw(std::domain_error("Out of range"));
return *(&x+i);
}
//Arithmetic operators
Vector2 operator+(Vector2 v) const {
Vector2 ret;
ret.x = x + v.x;
ret.y = y + v.y;
return ret;
}
Vector2 operator-(Vector2 v) const {
Vector2 ret;
ret.x = x - v.x;
ret.y = y - v.y;
return ret;
}
Vector2 operator*(Vector2 v) const {
Vector2 ret;
ret.x = x * v.x;
ret.y = y * v.y;
return ret;
}
Vector2 operator*(double d) const {
Vector2 ret;
ret.x = x * d;
ret.y = y * d;
return ret;
}
Vector2 operator/(Vector2 v) {
if (!v.x || !v.y)
throw(std::domain_error("Divide by zero"));
Vector2 ret;
ret.x = x / v.x;
ret.y = y / v.y;
return ret;
}
Vector2 operator/(double d) {
if (!d)
throw(std::domain_error("Divide by zero"));
Vector2 ret;
ret.x = x / d;
ret.y = y / d;
return ret;
}
bool operator==(Vector2 v) { return (x == v.x && y == v.y); }
bool operator!=(Vector2 v) { return (x != v.x || y != v.y); }
//member templates
template<typename T> Vector2 operator+=(T t) { return *this = *this + t; }
template<typename T> Vector2 operator-=(T t) { return *this = *this - t; }
template<typename T> Vector2 operator*=(T t) { return *this = *this * t; }
template<typename T> Vector2 operator/=(T t) { return *this = *this / t; }
template<typename T> bool operator==(T t) { return (x == t && y == t); }
template<typename T> bool operator!=(T t) { return (x != t || y != t); }
};
//non-member templates
template<typename T> Vector2 operator+(T t, Vector2 v) { return v + t; }
template<typename T> Vector2 operator-(T t, Vector2 v) { return v - t; }
template<typename T> Vector2 operator*(T t, Vector2 v) { return v * t; }
template<typename T> Vector2 operator/(T t, Vector2 v) { return v / t; }
template<typename T> bool operator==(T t, Vector2 v) { return v == t; }
template<typename T> bool operator!=(T t, Vector2 v) { return v != t; }
#endif