From 8bbafc4d100325c58bb7c6d69358cee4536ebe0d Mon Sep 17 00:00:00 2001
From: "Zed A. Shaw" <zed.shaw@gmail.com>
Date: Mon, 30 Jun 2025 12:36:00 -0400
Subject: [PATCH] Raycaster now keeps track of the square we are aimed but
 _does not_ know what is there, that's the job of other things like MainUI.
 Closes #50.

---
 constants.hpp   |  1 +
 gui/main_ui.cpp |  6 ++----
 raycaster.cpp   | 16 ++++++++++------
 raycaster.hpp   |  4 ++--
 4 files changed, 15 insertions(+), 12 deletions(-)

diff --git a/constants.hpp b/constants.hpp
index d78c94e..aff596c 100644
--- a/constants.hpp
+++ b/constants.hpp
@@ -14,6 +14,7 @@ constexpr const int RAY_VIEW_X=(SCREEN_WIDTH - RAY_VIEW_WIDTH);
 constexpr const int RAY_VIEW_Y=0;
 constexpr const int GLOW_LIMIT=220;
 constexpr const int LIGHT_MULTIPLIER=2.5;
+constexpr const float AIMED_AT_BRIGHTNESS=0.2f;
 
 constexpr const int BOSS_VIEW_WIDTH=1080;
 constexpr const int BOSS_VIEW_HEIGHT=SCREEN_HEIGHT;
diff --git a/gui/main_ui.cpp b/gui/main_ui.cpp
index 96c5800..36a80a5 100644
--- a/gui/main_ui.cpp
+++ b/gui/main_ui.cpp
@@ -31,10 +31,8 @@ namespace gui {
   }
 
   DinkyECS::Entity MainUI::camera_aim() {
-    auto aimed_at = $rayview.aimed_at();
-
-    if($level.collision->occupied(aimed_at)) {
-      return $level.collision->get(aimed_at);
+    if($level.collision->occupied($rayview.aiming_at)) {
+      return $level.collision->get($rayview.aiming_at);
     } else {
       return 0;
     }
diff --git a/raycaster.cpp b/raycaster.cpp
index 860b2a4..a3a7884 100644
--- a/raycaster.cpp
+++ b/raycaster.cpp
@@ -204,7 +204,7 @@ void Raycaster::sprite_casting(sf::RenderTarget &target) {
         apply_sprite_effect(effect, sprite_width, sprite_height);
       } else {
         effect = $brightness;
-        level += (aiming_at == rec.second) * 0.1;
+        level += (aiming_at == sprite_pos.location) * AIMED_AT_BRIGHTNESS;
         effect->setUniform("darkness", level);
       }
 
@@ -475,6 +475,8 @@ bool Raycaster::play_rotate() {
   $plane_x = std::lerp($plane_x, $camera.target_plane_x, $camera.t);
   $plane_y = std::lerp($plane_y, $camera.target_plane_y, $camera.t);
 
+  aiming_at = { size_t($pos_x + $dir_x), size_t($pos_y + $dir_y) };
+
   return $camera.t >= 1.0;
 }
 
@@ -482,19 +484,21 @@ bool Raycaster::play_move() {
   $camera.t += $camera.move_speed;
   $pos_x = std::lerp($pos_x, $camera.target_x, $camera.t);
   $pos_y = std::lerp($pos_y, $camera.target_y, $camera.t);
+
+  aiming_at = { size_t($pos_x + $dir_x), size_t($pos_y + $dir_y) };
+
   return $camera.t >= 1.0;
 }
 
 void Raycaster::abort_plan() {
   $camera.target_x = $pos_x;
   $camera.target_y = $pos_y;
+  aiming_at = { size_t($pos_x + $dir_x), size_t($pos_y + $dir_y) };
 }
 
-Point Raycaster::aimed_at() {
-  return {
-    size_t($pos_x + $dir_x),
-    size_t($pos_y + $dir_y)
-  };
+bool Raycaster::is_target(DinkyECS::Entity entity) {
+  (void)entity;
+  return false;
 }
 
 Point Raycaster::camera_target() {
diff --git a/raycaster.hpp b/raycaster.hpp
index b7d132a..9c82023 100644
--- a/raycaster.hpp
+++ b/raycaster.hpp
@@ -26,7 +26,7 @@ struct Raycaster {
   double $plane_y = 0.66;
   sf::Texture $view_texture;
   sf::Sprite $view_sprite;
-  DinkyECS::Entity aiming_at = 0;
+  Point aiming_at{0,0};
   CameraLOL $camera;
 
   std::unique_ptr<RGBA[]> $pixels = nullptr;
@@ -72,6 +72,6 @@ struct Raycaster {
   bool play_move();
 
   void abort_plan();
-  Point aimed_at();
+  bool is_target(DinkyECS::Entity entity);
   Point camera_target();
 };