From b98bc61a027ca69a6b90d6f08821f637a165f0ef Mon Sep 17 00:00:00 2001
From: luckyturtledev <git@lukas1818.de>
Date: Sat, 6 Jul 2024 20:45:05 +0000
Subject: [PATCH] add battery-ui (#6)

Reviewed-on: https://msrd0.dev/spielemarmelade/turtlegame/pulls/6
Co-authored-by: luckyturtledev <git@lukas1818.de>
Co-committed-by: luckyturtledev <git@lukas1818.de>
---
 src/game.rs | 17 +++++++++++++++++
 src/main.rs |  5 ++++-
 src/ui.rs   | 31 +++++++++++++++++++++++++++++++
 3 files changed, 52 insertions(+), 1 deletion(-)
 create mode 100644 src/ui.rs

diff --git a/src/game.rs b/src/game.rs
index fbe5ab7..2a2abf2 100644
--- a/src/game.rs
+++ b/src/game.rs
@@ -5,6 +5,22 @@ use crate::{
 use comfy::EngineContext;
 use std::ops::Sub;
 
+#[derive(Debug)]
+pub struct Ghost {
+	/// current electric charge of the Ghost
+	pub charge: f32,
+	/// max electric charge of the Ghost
+	pub max_charge: f32
+}
+
+impl Default for Ghost {
+	fn default() -> Self {
+		Self {
+			charge: 1000.0,
+			max_charge: 1000.0
+		}
+	}
+}
 #[repr(i32)]
 pub enum ZLayer {
 	MapMax = -1,
@@ -39,4 +55,5 @@ pub fn draw(state: &State, engine: &EngineContext<'_>) {
 		Activity::House => house::draw(state, engine),
 		Activity::Overworld => overworld::draw(state, engine)
 	}
+	crate::ui::draw(state, engine);
 }
diff --git a/src/main.rs b/src/main.rs
index 21b58d5..0f0fe28 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -8,10 +8,12 @@ mod assets {
 
 mod activities;
 mod game;
+mod ui;
 
 use self::{
 	activities::{house::HouseState, overworld::worldgen::Overworld, Activity},
-	assets::Assets
+	assets::Assets,
+	game::Ghost
 };
 use comfy::{
 	init_game_config, pollster, run_comfy_main_async, EngineContext, EngineState,
@@ -24,6 +26,7 @@ const GAME_NAME: &str = "Powercreep";
 struct State {
 	setup_called: bool,
 	activity: Activity,
+	ghost: Ghost,
 	overworld: Overworld,
 	house: HouseState
 }
diff --git a/src/ui.rs b/src/ui.rs
new file mode 100644
index 0000000..7de61ee
--- /dev/null
+++ b/src/ui.rs
@@ -0,0 +1,31 @@
+use crate::State;
+use comfy::{
+	draw_rect, draw_rect_outline, screen_height, screen_to_world, screen_width,
+	EngineContext, Vec2, BLUE, RED
+};
+
+pub fn draw(state: &State, _engine: &EngineContext<'_>) {
+	// seperate fill state into smaller section for better readability
+	let section_count = 5;
+	let mut start_positon = screen_to_world(Vec2::new(screen_width(), screen_height()));
+	// section size in world codinates
+	let section_size = Vec2::new(0.5, 0.25);
+	start_positon.x -= 0.5 * section_size.x + 0.5 * section_size.y;
+	start_positon.y += 0.5 * section_size.y + 0.5 * section_size.y;
+	// draw fill level
+	{
+		let ghost = &state.ghost;
+		let percent = ghost.charge / ghost.max_charge;
+		let mut size = section_size;
+		size.y = section_size.y * section_count as f32 * percent;
+		let mut position = start_positon;
+		position.y += 0.5 * -section_size.y + 0.5 * size.y;
+		draw_rect(position, size, BLUE, 100);
+	}
+	// draw sections
+	for i in 0 .. section_count {
+		let mut position = start_positon;
+		position.y += i as f32 * section_size.y;
+		draw_rect_outline(position, section_size, 0.1, RED, 100);
+	}
+}