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DinkyECS is now controlling the game and can handle multiple enemies easily. Next is to clean this up so it's not just one gross pile of code in the gui.

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Zed A. Shaw 1 month ago
parent 86c98c43c2
commit 33327154ad
9 changed files with 195 additions and 149 deletions
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  1. 8
      dinkyecs.hpp
  2. 37
      entity.cpp
  3. 35
      entity.hpp
  4. 155
      gui.cpp
  5. 7
      gui.hpp
  6. 4
      map.cpp
  7. 4
      map.hpp
  8. 2
      meson.build
  9. 92
      scratchpad/myecstest.cpp

8
dinkyecs.hpp
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@ -87,6 +87,12 @@ namespace DinkyECS {
system<CompA, CompB>(cb); system<CompA, CompB>(cb);
}; };
} }
};
template<typename CompA>
std::function<void()> runner(std::function<void(const Entity&, CompA&)> cb) {
return [&]{
system<CompA>(cb);
};
}
};
} }

37
entity.cpp
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@ -1,37 +0,0 @@
#include "entity.hpp"
void Entity::move(Point loc) {
location = loc;
}
void Entity::event(EntityEvent ev) {
switch($state) {
FSM_STATE(EntityState, START, ev);
FSM_STATE(EntityState, HUNTING, ev);
FSM_STATE(EntityState, DEAD, ev);
}
}
void Entity::START(EntityEvent ev) {
state(EntityState::HUNTING);
}
void Entity::HUNTING(EntityEvent ev) {
switch(ev) {
case EntityEvent::HIT:
hp -= damage;
break;
default:
state(EntityState::HUNTING);
}
if(hp <= 0) {
state(EntityState::DEAD);
} else {
state(EntityState::HUNTING);
}
}
void Entity::DEAD(EntityEvent ev) {
state(EntityState::DEAD);
}

35
entity.hpp
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@ -1,35 +0,0 @@
#pragma once
#include "fsm.hpp"
#include "map.hpp"
enum class EntityState {
START, HUNTING, DEAD
};
enum class EntityEvent {
GO, HIT
};
struct Entity : public DeadSimpleFSM<EntityState, EntityEvent> {
Point location{0,0};
int hp = 20;
int damage = 10;
Entity() {
}
Entity(Point loc) : location(loc) {
}
// disable copy
Entity(Entity &e) = delete;
void move(Point loc);
void event(EntityEvent ev);
// states
void START(EntityEvent ev);
void HUNTING(EntityEvent ev);
void DEAD(EntityEvent ev);
};

155
gui.cpp
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@ -25,6 +25,32 @@ using namespace fmt;
using namespace std::chrono_literals; using namespace std::chrono_literals;
using namespace ftxui; using namespace ftxui;
struct Player {
DinkyECS::Entity entity;
};
struct Position {
Point location;
};
struct Motion {
int dx;
int dy;
};
struct Combat {
int hp;
int damage;
};
struct Treasure {
int amount;
};
struct Tile {
std::string chr = "!";
};
std::array<sf::Color, 10> VALUES{ std::array<sf::Color, 10> VALUES{
sf::Color{1, 4, 2}, // black sf::Color{1, 4, 2}, // black
sf::Color{9, 29, 16}, // dark dark sf::Color{9, 29, 16}, // dark dark
@ -69,22 +95,18 @@ GUI::GUI() : $game_map(GAME_MAP_X, GAME_MAP_Y),
$map_text.setFillColor(color(Value::MID)); $map_text.setFillColor(color(Value::MID));
$game_map.generate(); $game_map.generate();
$player.location = $game_map.place_entity(0);
$enemy.location = $game_map.place_entity(1);
$goal = $game_map.place_entity($game_map.room_count() - 1);
} }
void GUI::create_renderer() { void GUI::create_renderer() {
$map_view = Renderer([&] { auto player = $world.get<Player>();
$map_view = Renderer([&, player] {
const auto& player_position = $world.component<Position>(player.entity);
Matrix &walls = $game_map.walls(); Matrix &walls = $game_map.walls();
$game_map.set_target($player.location); $game_map.set_target(player_position.location);
$game_map.make_paths(); $game_map.make_paths();
Matrix &paths = $game_map.paths(); Matrix &paths = $game_map.paths();
if($player.in_state(EntityState::DEAD)) {
$status_text = "DEAD!";
}
for(size_t x = 0; x < walls[0].size(); ++x) { for(size_t x = 0; x < walls[0].size(); ++x) {
for(size_t y = 0; y < walls.size(); ++y) { for(size_t y = 0; y < walls.size(); ++y) {
string tile = walls[y][x] == 1 ? WALL_TILE : format("{}", paths[y][x]); string tile = walls[y][x] == 1 ? WALL_TILE : format("{}", paths[y][x]);
@ -99,18 +121,19 @@ void GUI::create_renderer() {
} }
} }
$canvas.DrawText($enemy.location.x*2, $enemy.location.y*4, ENEMY_TILE); $world.system<Position, Tile>([&](const auto &ent, auto &pos, auto &tile) {
$canvas.DrawText($player.location.x*2, $player.location.y*4, PLAYER_TILE); $canvas.DrawText(pos.location.x*2, pos.location.y*4, tile.chr);
$canvas.DrawText($goal.x*2, $goal.y*4, "$"); });
return canvas($canvas); return canvas($canvas);
}); });
$document = Renderer([&]{ $document = Renderer([&, player]{
const auto& player_combat = $world.component<Combat>(player.entity);
return hbox({ return hbox({
hflow( hflow(
vbox( vbox(
text(format("HP: {}", $player.hp)) | border, text(format("HP: {}", player_combat.hp)) | border,
text($status_text) | border text($status_text) | border
) | xflex_grow ) | xflex_grow
), ),
@ -122,46 +145,61 @@ void GUI::create_renderer() {
void GUI::handle_events() { void GUI::handle_events() {
sf::Event event; sf::Event event;
auto player = $world.get<Player>();
auto& player_motion = $world.component<Motion>(player.entity);
while($window.pollEvent(event)) { while($window.pollEvent(event)) {
if(event.type == sf::Event::Closed) { if(event.type == sf::Event::Closed) {
$window.close(); $window.close();
} else if(event.type == sf::Event::KeyPressed) { } else if(event.type == sf::Event::KeyPressed) {
size_t x = $player.location.x;
size_t y = $player.location.y;
if(sf::Keyboard::isKeyPressed(sf::Keyboard::Left)) { if(sf::Keyboard::isKeyPressed(sf::Keyboard::Left)) {
x -= 1; player_motion.dx = -1;
} else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Right)) { } else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Right)) {
x += 1; player_motion.dx = 1;
} else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Up)) { } else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Up)) {
y -= 1; player_motion.dy = -1;
} else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Down)) { } else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Down)) {
y += 1; player_motion.dy = 1;
} }
if($game_map.inmap(x,y) && !$game_map.iswall(x,y)) { // COMPOSE system? You create a bunch of callbacks and then combine them into
$game_map.clear_target($player.location); // a single run over the data?
$player.move({x, y});
} else {
$shake_it = true;
$hit_sound.play();
}
// move $enemy here // move enemies system
// BUG: when the enemy has no path it goes through walls, which means $world.system<Position, Motion>([&](const auto &ent, auto &position, auto &motion) {
// this neighbors function is not working right. Probably updating if(ent != player.entity) {
// enemy.location in an out parameter isn't the best idea. Point out = position.location;
bool found = $game_map.neighbors($enemy.location, true); $game_map.neighbors(out, false);
if(!found) { motion = { int(out.x - position.location.x), int(out.y - position.location.y)};
$status_text = "ENEMY STUCK!"; }
} });
if($enemy.location.x == $player.location.x && $enemy.location.y == $player.location.y) { // motion system
$player.event(EntityEvent::HIT); $world.system<Position, Motion>([&](const auto &ent, auto &position, auto &motion) {
$burn_baby_burn = true; Point move_to = {
} else if($goal.x == $player.location.x && $goal.y == $player.location.y) { position.location.x + motion.dx,
$status_text = "YOU WIN!"; position.location.y + motion.dy
} };
motion = {0,0}; // clear it after getting it
if($game_map.inmap(move_to.x, move_to.y) && !$game_map.iswall(move_to.x,move_to.y)) {
$game_map.clear_target(position.location);
position.location = move_to;
}
});
// combat system
auto combatSystem = [&]() {
const auto& player_position = $world.component<Position>(player.entity);
$world.system<Position, Combat>([&](const auto &ent, auto &pos, auto &combat) {
if(ent != player.entity && pos.location.x == player_position.location.x &&
pos.location.y == player_position.location.y) {
$burn_baby_burn = true;
}
});
};
combatSystem();
} }
} }
} }
@ -187,6 +225,7 @@ void GUI::draw_screen(bool clear, float map_off_x, float map_off_y) {
} }
void GUI::shake() { void GUI::shake() {
$hit_sound.play();
for(int i = 0; i < 10; ++i) { for(int i = 0; i < 10; ++i) {
int x = Random::uniform<int>(-10,10); int x = Random::uniform<int>(-10,10);
int y = Random::uniform<int>(-10,10); int y = Random::uniform<int>(-10,10);
@ -196,6 +235,35 @@ void GUI::shake() {
} }
} }
void GUI::configure_world() {
dbc::check($game_map.room_count() > 1, "not enough rooms in map.");
// configure a player as a fact of the world
Player player{$world.entity()};
$world.set<Player>(player);
$world.assign<Position>(player.entity, {$game_map.place_entity(0)});
$world.assign<Motion>(player.entity, {0, 0});
$world.assign<Combat>(player.entity, {100, 10});
$world.assign<Tile>(player.entity, {PLAYER_TILE});
auto enemy = $world.entity();
$world.assign<Position>(enemy, {$game_map.place_entity(1)});
$world.assign<Motion>(enemy, {0,0});
$world.assign<Combat>(enemy, {20, 10});
$world.assign<Tile>(enemy, {ENEMY_TILE});
auto enemy2 = $world.entity();
$world.assign<Position>(enemy2, {$game_map.place_entity(2)});
$world.assign<Motion>(enemy2, {0,0});
$world.assign<Combat>(enemy2, {20, 10});
$world.assign<Tile>(enemy2, {"*"});
auto gold = $world.entity();
$world.assign<Position>(gold, {$game_map.place_entity($game_map.room_count() - 1)});
$world.assign<Treasure>(gold, {100});
$world.assign<Tile>(gold, {"$"});
}
void GUI::render_scene() { void GUI::render_scene() {
Render($map_screen, $map_view->Render()); Render($map_screen, $map_view->Render());
Render($screen, $document->Render()); Render($screen, $document->Render());
@ -222,6 +290,7 @@ void GUI::render_scene() {
} }
int GUI::main() { int GUI::main() {
configure_world();
create_renderer(); create_renderer();
while($window.isOpen()) { while($window.isOpen()) {

7
gui.hpp
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@ -10,8 +10,8 @@
#include <ftxui/dom/canvas.hpp> #include <ftxui/dom/canvas.hpp>
#include <locale> #include <locale>
#include <string> #include <string>
#include "entity.hpp"
#include "map.hpp" #include "map.hpp"
#include "dinkyecs.hpp"
using std::string; using std::string;
using ftxui::Canvas, ftxui::Component, ftxui::Screen; using ftxui::Canvas, ftxui::Component, ftxui::Screen;
@ -42,9 +42,6 @@ class GUI {
sf::Sound $hit_sound; sf::Sound $hit_sound;
bool $show_paths = false; bool $show_paths = false;
string $status_text = "NOT DEAD"; string $status_text = "NOT DEAD";
Entity $player;
Entity $enemy;
Point $goal;
Component $document; Component $document;
Component $map_view; Component $map_view;
Canvas $canvas; Canvas $canvas;
@ -57,6 +54,7 @@ class GUI {
sf::RenderWindow $window; sf::RenderWindow $window;
Screen $screen; Screen $screen;
Screen $map_screen; Screen $map_screen;
DinkyECS::World $world;
public: public:
GUI(); GUI();
@ -71,6 +69,7 @@ public:
void draw_screen(bool clear=true, float map_off_x=0.0f, float map_off_y=0.0f); void draw_screen(bool clear=true, float map_off_x=0.0f, float map_off_y=0.0f);
void shake(); void shake();
void burn(); void burn();
void configure_world();
int main(); int main();
}; };

4
map.cpp
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@ -271,11 +271,11 @@ bool Map::walk(Point &src, Point &target) {
return false; return false;
} }
void Map::set_target(Point &at, int value) { void Map::set_target(const Point &at, int value) {
$input_map[at.y][at.x] = 0; $input_map[at.y][at.x] = 0;
} }
void Map::clear_target(Point &at) { void Map::clear_target(const Point &at) {
$input_map[at.y][at.x] = 1; $input_map[at.y][at.x] = 1;
} }

4
map.hpp
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@ -75,8 +75,8 @@ public:
void place_rooms(Room &root); void place_rooms(Room &root);
void make_paths(); void make_paths();
void partition_map(Room &cur, int depth); void partition_map(Room &cur, int depth);
void set_target(Point &at, int value=0); void set_target(const Point &at, int value=0);
void clear_target(Point &at); void clear_target(const Point &at);
bool walk(Point &src, Point &target); bool walk(Point &src, Point &target);
void set_door(Room &room, int value); void set_door(Room &room, int value);
void dump(); void dump();

2
meson.build
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@ -17,7 +17,6 @@ dependencies = [catch2, fmt,
runtests = executable('runtests', [ runtests = executable('runtests', [
'dbc.cpp', 'dbc.cpp',
'map.cpp', 'map.cpp',
'entity.cpp',
'rand.cpp', 'rand.cpp',
'tests/fsm.cpp', 'tests/fsm.cpp',
'tests/dbc.cpp', 'tests/dbc.cpp',
@ -31,7 +30,6 @@ roguish = executable('roguish', [
'map.cpp', 'map.cpp',
'gui.cpp', 'gui.cpp',
'rand.cpp', 'rand.cpp',
'entity.cpp',
], ],
dependencies: dependencies) dependencies: dependencies)

92
scratchpad/myecstest.cpp
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@ -4,7 +4,12 @@
#include <fmt/core.h> #include <fmt/core.h>
using namespace fmt; using namespace fmt;
using DinkyECS::Entity, DinkyECS::World; using DinkyECS::Entity;
struct Player {
std::string name;
Entity eid;
};
struct Position { struct Position {
double x, y; double x, y;
@ -18,63 +23,104 @@ struct Gravity {
double level; double level;
}; };
int main() { /*
World me; * Using a function catches instances where I'm not copying
* the data into the world.
*/
void configure(DinkyECS::World &world, Entity &test) {
println("---Configuring the base system.");
Entity test2 = world.entity();
world.assign<Position>(test, {10,20});
world.assign<Velocity>(test, {1,2});
world.assign<Position>(test2, {1,1});
world.assign<Velocity>(test2, {10,20});
println("---- Setting up the player as a fact in the system.");
auto player_eid = world.entity();
Player player_info{"Zed", player_eid};
// just set some player info as a fact with the entity id
world.set<Player>(player_info);
world.assign<Velocity>(player_eid, {0,0});
world.assign<Position>(player_eid, {0,0});
auto enemy = world.entity();
world.assign<Velocity>(enemy, {0,0});
world.assign<Position>(enemy, {0,0});
Entity test = me.entity(); println("--- Creating facts (singletons)");
Entity test2 = me.entity(); world.set<Gravity>({0.9});
}
me.assign<Position>(test, {10,20}); int main() {
me.assign<Velocity>(test, {1,2}); DinkyECS::World world;
Entity test = world.entity();
me.assign<Position>(test2, {1,1}); configure(world, test);
me.assign<Velocity>(test2, {10,20});
Position &pos = me.component<Position>(test); Position &pos = world.component<Position>(test);
println("GOT POS x={}, y={}", pos.x, pos.y); println("GOT POS x={}, y={}", pos.x, pos.y);
Velocity &vel = me.component<Velocity>(test); Velocity &vel = world.component<Velocity>(test);
println("GOT VELOCITY x={}, y={}", vel.x, vel.y); println("GOT VELOCITY x={}, y={}", vel.x, vel.y);
println("--- Position only system:"); println("--- Position only system:");
me.system<Position>([](const auto &ent, auto &pos) { world.system<Position>([](const auto &ent, auto &pos) {
println("entity={}, pos.x={}, pos.y={}", ent, pos.x, pos.y); println("entity={}, pos.x={}, pos.y={}", ent, pos.x, pos.y);
}); });
println("--- Velocity only system:"); println("--- Velocity only system:");
me.system<Velocity>([](const auto &, auto &vel) { world.system<Velocity>([](const auto &, auto &vel) {
println("vel.x={}, vel.y={}", vel.x, vel.y); println("vel.x={}, vel.y={}", vel.x, vel.y);
}); });
println("--- Manually get the velocity in position system:"); println("--- Manually get the velocity in position system:");
me.system<Position>([&](const auto &ent, auto &pos) { world.system<Position>([&](const auto &ent, auto &pos) {
Velocity &vel = me.component<Velocity>(ent); Velocity &vel = world.component<Velocity>(ent);
println("entity={}, vel.x, vel.y, pos.x={}, pos.y={}", ent, vel.x, vel.y, pos.x, pos.y); println("entity={}, vel.x, vel.y, pos.x={}, pos.y={}", ent, vel.x, vel.y, pos.x, pos.y);
}); });
println("--- Creating facts (singletons)");
me.set<Gravity>({0.9});
println("--- Query only entities with Position and Velocity:"); println("--- Query only entities with Position and Velocity:");
me.system<Position, Velocity>([&](const auto &ent, auto &pos, auto &vel) { world.system<Position, Velocity>([&](const auto &ent, auto &pos, auto &vel) {
Gravity &grav = me.get<Gravity>(); Gravity &grav = world.get<Gravity>();
println("grav={}, entity={}, vel.x, vel.y, pos.x={}, pos.y={}", grav.level, ent, vel.x, vel.y, pos.x, pos.y); println("grav={}, entity={}, vel.x, vel.y, pos.x={}, pos.y={}", grav.level, ent, vel.x, vel.y, pos.x, pos.y);
}); });
// now remove Velocity // now remove Velocity
me.remove<Velocity>(test); world.remove<Velocity>(test);
println("--- After remove test, should only result in test2:"); println("--- After remove test, should only result in test2:");
me.system<Position, Velocity>([&](const auto &ent, auto &pos, auto &vel) { world.system<Position, Velocity>([&](const auto &ent, auto &pos, auto &vel) {
println("entity={}, vel.x, vel.y, pos.x={}, pos.y={}", ent, vel.x, vel.y, pos.x, pos.y); println("entity={}, vel.x, vel.y, pos.x={}, pos.y={}", ent, vel.x, vel.y, pos.x, pos.y);
}); });
println("--- Create a stored system you can save for later."); println("--- Create a stored system you can save for later.");
auto movementSystem = me.runner<Position, Velocity>([&](const auto &ent, auto &pos, auto &vel) { auto movementSystem = world.runner<Position, Velocity>([&](const auto &ent, auto &pos, auto &vel) {
println("entity={}, vel.x, vel.y, pos.x={}, pos.y={}", ent, vel.x, vel.y, pos.x, pos.y); println("entity={}, vel.x, vel.y, pos.x={}, pos.y={}", ent, vel.x, vel.y, pos.x, pos.y);
}); });
movementSystem(); movementSystem();
// how to create an identified entity like the player
// to avoid repeatedly getting the player just make a closure with it
// QUESTION: could I just capture it and not have the double function wrapping?
auto playerVsEnemies = [&]() {
auto& player = world.get<Player>(); // grabbed it
world.system<Position>([&](const auto &ent, auto &pos) {
if(player.eid != ent) {
println("{} is enemy attacking player {}", ent, player.name);
} else {
println("{} is player", player.name);
}
});
};
playerVsEnemies();
return 0; return 0;
} }

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