Very basic collision and combat to work out the idea and a logging system on the left.

components.hpp

@@ -1,5 +1,6 @@
 #pragma once
 #include "dinkyecs.hpp"
+#include <deque>
 
 namespace Components {
   struct Player {
@@ -27,4 +28,15 @@ namespace Components {
   struct Tile {
     std::string chr = "!";
   };
+
+  struct ActionLog {
+    std::deque<std::string> messages;
+
+    void log(std::string msg) {
+      messages.push_front(msg);
+      if(messages.size() > 20) {
+        messages.pop_back();
+      }
+    }
+  };
 }

gui.cpp

@@ -83,12 +83,24 @@ void GUI::create_renderer() {
 
   $document = Renderer([&, player]{
     const auto& player_combat = $world.component<Combat>(player.entity);
+    const auto& log = $world.get<ActionLog>();
+
+    $status_text = player_combat.hp > 0 ? "NOT DEAD" : "DEAD!!!!!!";
+
+    std::vector<Element> log_list;
+    for(auto msg : log.messages) {
+      log_list.push_back(text(msg));
+    }
+    auto log_box = vbox(log_list) | yflex_grow | border;
+
     return hbox({
         hflow(
           vbox(
-              text(format("HP: {}", player_combat.hp)) | border,
-              text($status_text) | border
-              )  | xflex_grow
+              text(format("HP: {: >3}", player_combat.hp)) | border,
+              text($status_text) | border,
+              separator(),
+              log_box
+              )  | flex_grow
         ),
         separator(),
         hbox(),
@@ -262,6 +274,9 @@ void GUI::configure_world() {
   Player player{$world.entity()};
   $world.set<Player>(player);
 
+  ActionLog log{{"Welcome to the game!"}};
+  $world.set<ActionLog>(log);
+
   $world.assign<Position>(player.entity, {$game_map.place_entity(0)});
   $world.assign<Motion>(player.entity, {0, 0});
   $world.assign<Combat>(player.entity, {100, 10});
@@ -286,6 +301,8 @@ void GUI::configure_world() {
 }
 
 void GUI::render_scene() {
+  $screen.Clear();
+  $map_screen.Clear();
   Render($map_screen, $map_view->Render());
   Render($screen, $document->Render());
 

scratchpad/collider.cpp

@@ -58,6 +58,8 @@ class SpatialHashTable {
     std::unordered_map<Point, std::vector<Object*>, PointHash> table;
 };
 
+
+
 int main() {
   SpatialHashTable hashTable;
   Object obj1 = {{5, 5}};

status.txt

@@ -1,8 +1,8 @@
 TODO:
 
-* Figure out how to render color fonts from FTUI.
-* Dynamically determine the font vs. screensize to get an exact FTXUI screen size.
 * Write a test that generates a ton of maps then confirms there's a path from one room to every other room?
-* If the player is trapped in a room the enemy just travles through walls.
-* Add FLECS.
 * Lua integration?
+* Text is not actually cleared when rendered either in FTXUI or SFML.
+
+* Work on collision detection with either a coordinate map or morton codes.
+* Bring back sounds, check out SoLoud.

systems.cpp

@@ -1,6 +1,8 @@
 #include "systems.hpp"
 #include <fmt/core.h>
 #include <string>
+#include <cmath>
+#include "rand.hpp"
 
 using std::string;
 using namespace fmt;
@@ -33,8 +35,9 @@ void System::motion(DinkyECS::World &world, Map &game_map) {
       };
       motion = {0,0}; // clear it after getting it
 
-      // avoid colision, but could this be a different system?
-      if(game_map.inmap(move_to.x, move_to.y) && !game_map.iswall(move_to.x,move_to.y)) {
+      if(game_map.inmap(move_to.x, move_to.y) &&
+          !game_map.iswall(move_to.x,move_to.y))
+      {
         position.location = move_to;
       }
     }
@@ -44,12 +47,22 @@ void System::motion(DinkyECS::World &world, Map &game_map) {
 
 void System::combat(DinkyECS::World &world, Player &player) {
   const auto& player_position = world.component<Position>(player.entity);
+  auto& player_combat = world.component<Combat>(player.entity);
+  auto& log = world.get<ActionLog>();
 
   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)
-      {
-        // need to sort out combat here
+      if(ent != player.entity) {
+        int dx = std::abs(int(pos.location.x) - int(player_position.location.x));
+        int dy = std::abs(int(pos.location.y) - int(player_position.location.y));
+
+        if(dx <= 1 && dy <= 1) {
+          if(player_combat.hp > -1) {
+            int dmg = Random::uniform<int>(1, combat.damage);
+            player_combat.hp -= dmg;
+
+            log.log(format("HIT! You took {} damage.", dmg));
+          }
+        }
       }
   });
 };