added simple command line

[blank.git] / src / shared / cli.cpp

diff --git a/src/shared/cli.cpp b/src/shared/cli.cpp
new file mode 100644 (file)
index 0000000..aa6629f
--- /dev/null
+++ b/src/shared/cli.cpp
@@ -0,0 +1,84 @@
+#include "CLI.hpp"
+#include "commands.hpp"
+
+#include "../io/TokenStreamReader.hpp"
+#include "../world/Entity.hpp"
+#include "../world/Player.hpp"
+
+#include <iostream>
+#include <sstream>
+
+using namespace std;
+
+
+namespace blank {
+
+CLI::CLI(World &world)
+: world(world)
+, commands() {
+       AddCommand("tp", new TeleportCommand);
+}
+
+CLI::~CLI() {
+       for (auto &entry : commands) {
+               delete entry.second;
+       }
+}
+
+void CLI::AddCommand(const string &name, Command *cmd) {
+       commands[name] = cmd;
+}
+
+void CLI::Execute(Player &player, const string &line) {
+       stringstream s(line);
+       TokenStreamReader args(s);
+       if (!args.HasMore()) {
+               // ignore empty command line
+               return;
+       }
+       if (args.Peek().type != Token::IDENTIFIER) {
+               Error("I don't understand");
+               return;
+       }
+       string name;
+       args.ReadIdentifier(name);
+       auto entry = commands.find(name);
+       if (entry == commands.end()) {
+               Error(name + ": command not found");
+               return;
+       }
+       try {
+               entry->second->Execute(*this, player, args);
+       } catch (exception &e) {
+               Error(name + ": " + e.what());
+       } catch (...) {
+               Error(name + ": unknown execution error");
+       }
+}
+
+void CLI::Message(const string &msg) {
+       // TODO: display message to player
+       cout << msg << endl;
+}
+
+void CLI::Error(const string &msg) {
+       Message("CLI error: " + msg);
+}
+
+CLI::Command::~Command() {
+
+}
+
+
+void TeleportCommand::Execute(CLI &cli, Player &player, TokenStreamReader &args) {
+       glm::vec3 pos(args.GetFloat(), args.GetFloat(), args.GetFloat());
+       glm::ivec3 chunk(pos);
+       chunk /= Chunk::Extent();
+       pos -= chunk;
+       EntityState state = player.GetEntity().GetState();
+       state.chunk_pos = chunk;
+       state.block_pos = pos;
+       player.GetEntity().SetState(state);
+}
+
+}