From c7849ff44b237bb8b7a8576569ede1f7576086ea Mon Sep 17 00:00:00 2001
From: kdx <kdx@42l.fr>
Date: Fri, 20 Jan 2023 04:30:19 +0100
Subject: layer selection (omg that so cool dog)

---
 Menu.cpp  | 15 ++++++++++++++-
 Menu.hpp  |  5 ++++-
 Table.cpp |  6 ++++++
 Table.hpp |  7 ++++---
 main.cpp  |  3 ++-
 5 files changed, 30 insertions(+), 6 deletions(-)

diff --git a/Menu.cpp b/Menu.cpp
index 7fa2448..688f7e0 100644
--- a/Menu.cpp
+++ b/Menu.cpp
@@ -3,7 +3,7 @@
 #include "cfg.hpp"
 #include <stdlib.h>
 
-Menu::Menu() : _hovered(-1)
+Menu::Menu() : _was_down(false), _hovered(-1), _selected(1)
 {
 }
 
@@ -12,21 +12,34 @@ void Menu::update(const Cursor &cursor)
 	if (cursor.x < 0 || cursor.x >= CFG_DWIDTH ||
 	    cursor.y < _ybegin || cursor.y > _yend) {
 		_hovered = -1;
+		_was_down = cursor.down;
 		return;
 	}
 	int x = cursor.x / _wentry;
 	if (x > _entries)
 		x = _entries;
 	_hovered = x;
+	if (cursor.down && !_was_down)
+		_selected = _hovered;
+	_was_down = cursor.down;
 }
 
 void Menu::draw() const
 {
 	LZR_DrawSetColor(0, 0, 0, 1);
 	LZR_DrawRectangle(true, 0, _ybegin, CFG_DWIDTH, _yend - _ybegin);
+	LZR_DrawSetColor(rand() & 1, rand() & 1, rand() & 1, rand() & 1);
+	if ((rand() & 31) == 0)
+		LZR_DrawRectangle(true, _selected * _wentry, _ybegin,
+		                  _wentry, _yend - _ybegin + 1);
 	if (_hovered > -1) {
 		LZR_DrawSetColor(rand() & 1, rand() & 1, rand() & 1, 1);
 		LZR_DrawRectangle(true, _hovered * _wentry, _ybegin,
 		                  _wentry, _yend - _ybegin + 1);
 	}
 }
+
+int Menu::get_selection() const
+{
+	return _selected;
+}
diff --git a/Menu.hpp b/Menu.hpp
index 957d6c4..47cd533 100644
--- a/Menu.hpp
+++ b/Menu.hpp
@@ -4,13 +4,16 @@
 
 class Menu {
 private:
-	static const int _ybegin = CFG_DHEIGHT - 32;
+	static const int _ybegin = CFG_DHEIGHT - 24;
 	static const int _yend = CFG_DHEIGHT;
 	static const int _entries = 3;
 	static const int _wentry = CFG_DWIDTH / _entries;
+	bool _was_down;
 	int _hovered;
+	int _selected;
 public:
 	Menu();
 	void update(const Cursor& cursor);
 	void draw() const;
+	int get_selection() const;
 };
diff --git a/Table.cpp b/Table.cpp
index be35faa..a209b13 100644
--- a/Table.cpp
+++ b/Table.cpp
@@ -72,3 +72,9 @@ void Table::draw(const Cursor& cursor)
 		LZR_DrawRectangle(true, x - s / 2, y, s, _lane);
 	}
 }
+
+void Table::set_layer(int layer)
+{
+	_layer = layer;
+	_layer %= _depth;
+}
diff --git a/Table.hpp b/Table.hpp
index 0c3b708..339381d 100644
--- a/Table.hpp
+++ b/Table.hpp
@@ -4,9 +4,9 @@
 
 class Table {
 private:
-	static const int _yend = CFG_DHEIGHT - 32;
-	static const int _height = 64;
-	static const int _depth = 2;
+	static const int _yend = CFG_DHEIGHT - 24;
+	static const int _height = 61;
+	static const int _depth = 3;
 	static const int _delay = 8;
 	static const int _lane = _yend / _height;
 	int _notes[_depth][_height];
@@ -16,4 +16,5 @@ public:
 	Table();
 	void update(const Cursor& cursor);
 	void draw(const Cursor& cursor);
+	void set_layer(int layer);
 };
diff --git a/main.cpp b/main.cpp
index 49c2474..3399d04 100644
--- a/main.cpp
+++ b/main.cpp
@@ -17,7 +17,7 @@ int main(int argc, char **argv)
 	LZR_ToggleFullscreen();
 	char snd_path[] = "res/sample_x.wav";
 	char *snd_x = strchr(snd_path, 'x');
-	for (int i = 0; i < 2; i++) {
+	for (int i = 0; i < 3; i++) {
 		*snd_x = '0' + i;
 		if (LZR_SoundLoad(snd_path, 1.0f) < 0) {
 			LZR_Quit();
@@ -33,6 +33,7 @@ int main(int argc, char **argv)
 		cursor.update();
 		table.update(cursor);
 		menu.update(cursor);
+		table.set_layer(menu.get_selection());
 		LZR_DrawBegin();
 		LZR_DrawSetColor(0, 0, 0, 1);
 		LZR_DrawClear();
-- 
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