From 027af044ce8eb233e47cd7134da42f0b53cf2784 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Thu, 15 Sep 2022 12:47:58 +0000
Subject: a

---
 .gitmodules              |  3 +++
 fake-json.hpp            |  3 ++-
 imgui                    |  1 +
 shaders/tile-shader.frag |  4 +---
 shaders/tile-shader.vert |  2 --
 tile.hpp                 | 19 ++++++++++++++-----
 6 files changed, 21 insertions(+), 11 deletions(-)
 create mode 160000 imgui

diff --git a/.gitmodules b/.gitmodules
index 115c205a..3cc0904d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -13,3 +13,6 @@
 [submodule "json"]
 	path = json
 	url = https://github.com/nlohmann/json.git
+[submodule "imgui"]
+	path = imgui
+	url = https://github.com/ocornut/imgui.git
diff --git a/fake-json.hpp b/fake-json.hpp
index 5965fbbc..57943d37 100644
--- a/fake-json.hpp
+++ b/fake-json.hpp
@@ -1,5 +1,6 @@
 #pragma once
-#ifndef __CLION_IDE__
+//#define GAME_REAL_JSON
+#if !defined __CLION_IDE__ || defined GAME_REAL_JSON
 #   include <nlohmann/json.hpp>
 #else
 
diff --git a/imgui b/imgui
new file mode 160000
index 00000000..2b1d8e3e
--- /dev/null
+++ b/imgui
@@ -0,0 +1 @@
+Subproject commit 2b1d8e3eafa3204e31aa2de5b42b380d40042930
diff --git a/shaders/tile-shader.frag b/shaders/tile-shader.frag
index 5d40df69..1cd1cf3d 100644
--- a/shaders/tile-shader.frag
+++ b/shaders/tile-shader.frag
@@ -4,12 +4,10 @@ layout(location = 2) uniform sampler2D textureData;
 layout(location = 1) uniform float y_scale;
 
 in vec2 interpolatedTextureCoordinates;
-in float interpolated_frag_depth;
 
 out vec4 fragmentColor;
 
 void main() {
     fragmentColor.rgb = texture(textureData, interpolatedTextureCoordinates).rgb;
-    fragmentColor.a = 1.0;
-    gl_FragDepth = interpolated_frag_depth * y_scale;
+    fragmentColor.a = 1;
 }
diff --git a/shaders/tile-shader.vert b/shaders/tile-shader.vert
index 6241977b..239f4b07 100644
--- a/shaders/tile-shader.vert
+++ b/shaders/tile-shader.vert
@@ -6,7 +6,6 @@ layout(location = 0) uniform vec2 scale;
 layout(location = 3) uniform vec2 offset;
 
 out vec2 interpolatedTextureCoordinates;
-out float interpolated_frag_depth;
 
 void main() {
     interpolatedTextureCoordinates = textureCoordinates;
@@ -14,5 +13,4 @@ void main() {
     float cx = 2/scale.x, cy = 2/scale.y;
     float x = position.y, y = position.x, z = position.z;
     gl_Position = vec4((x-y+offset.x)*cx, (x+y+z*2)*cx*0.75-offset.y*cx, 0, 1);
-    interpolated_frag_depth = -position.z;
 }
diff --git a/tile.hpp b/tile.hpp
index de92ba5e..47876f3c 100644
--- a/tile.hpp
+++ b/tile.hpp
@@ -3,6 +3,7 @@
 #include "hash.hpp"
 #include "defs.hpp"
 
+#include <concepts>
 #include <cstddef>
 #include <tuple>
 #include <array>
@@ -12,10 +13,14 @@
 
 namespace Magnum::Examples {
 
+static constexpr Vector3 TILE_SIZE = { 50, 50, 50 };
+
 struct tile_image final
 {
     std::shared_ptr<texture_atlas> atlas;
     std::uint8_t variant = 0xff;
+
+    explicit operator bool() const noexcept { return !!atlas; }
 };
 
 struct tile final
@@ -26,7 +31,7 @@ struct tile final
     tile_image ground_image_, wall_west_, wall_north_;
     pass_mode passability_ = pass_shoot_through;
 
-    explicit operator bool() const noexcept { return !!ground_image_.atlas; }
+    //explicit operator bool() const noexcept { return !!ground_image_.atlas; }
 };
 
 struct local_coords final {
@@ -67,8 +72,13 @@ struct chunk final
     constexpr tile& operator[](std::size_t i);
     constexpr const tile& operator[](std::size_t i) const;
 
-    template<typename F> constexpr inline void foreach_tile(F&& fun) { foreach_tile_<F, chunk&>(fun); }
-    template<typename F> constexpr inline void foreach_tile(F&& fun) const { foreach_tile_<F, const chunk&>(fun); }
+    template<typename F>
+    requires std::invocable<F, tile&, int, int>
+    constexpr inline void foreach_tile(F&& fun) { foreach_tile_<F, chunk&>(std::forward<F>(fun)); }
+
+    template<typename F>
+    requires std::invocable<F, const tile&, int, int>
+    constexpr inline void foreach_tile(F&& fun) const { foreach_tile_<F, const chunk&>(std::forward<F>(fun)); }
 
 private:
     template<typename F, typename Self> constexpr void foreach_tile_(F&& fun);
@@ -107,8 +117,7 @@ constexpr void chunk::foreach_tile_(F&& fun)
         for (unsigned i = 0; i < N; i++)
         {
             unsigned idx = j*N + i;
-            if (tiles[idx])
-                fun(*static_cast<Self>(*this).tiles[idx]);
+            fun(const_cast<Self>(*this).tiles[idx], i, j);
         }
 }
 
-- 
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