From 1d8539ee82032a1d938806704fd5e3228d40b9f7 Mon Sep 17 00:00:00 2001
From: Timothy Warren <twarren@nabancard.com>
Date: Mon, 10 Jan 2022 14:49:59 -0500
Subject: [PATCH] Render health bar

---
 color.py            | 14 ++++++++++++++
 engine.py           | 10 ++++++----
 render_functions.py | 36 ++++++++++++++++++++++++++++++++++++
 3 files changed, 56 insertions(+), 4 deletions(-)
 create mode 100644 color.py
 create mode 100644 render_functions.py

diff --git a/color.py b/color.py
new file mode 100644
index 0000000..a31803d
--- /dev/null
+++ b/color.py
@@ -0,0 +1,14 @@
+white = (0xFF, 0xFF, 0xFF)
+black = (0x0, 0x0, 0x0)
+
+player_atk = (0xE0, 0xE0, 0xE0)
+enemy_atk = (0xFF, 0xC0, 0xC0)
+
+player_die = (0xFF, 0x30, 0x30)
+enemy_die = (0xFF, 0xA0, 0x30)
+
+welcome_text = (0x20, 0xA0, 0xFF)
+
+bar_text = white
+bar_filled = (0x0, 0x60, 0x0)
+bar_empty = (0x40, 0x10, 0x10)
diff --git a/engine.py b/engine.py
index 7d2c0b0..8f8a2c9 100644
--- a/engine.py
+++ b/engine.py
@@ -7,6 +7,7 @@ from tcod.console import Console
 from tcod.map import compute_fov
 
 from input_handlers import MainGameEventHandler
+from render_functions import render_bar
 
 if TYPE_CHECKING:
     from entity import Actor
@@ -39,10 +40,11 @@ class Engine:
     def render(self, console: Console, context: Context) -> None:
         self.game_map.render(console)
 
-        console.print(
-            x=1,
-            y=47,
-            string=f"HP: {self.player.fighter.hp}/{self.player.fighter.max_hp}",
+        render_bar(
+            console,
+            current_value=self.player.fighter.hp,
+            maximum_value=self.player.fighter.max_hp,
+            total_width=20,
         )
 
         # Actually output to screen
diff --git a/render_functions.py b/render_functions.py
new file mode 100644
index 0000000..0651e5a
--- /dev/null
+++ b/render_functions.py
@@ -0,0 +1,36 @@
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+import color
+
+if TYPE_CHECKING:
+    from tcod import Console
+
+
+def render_bar(
+        console: Console,
+        current_value: int,
+        maximum_value: int,
+        total_width: int,
+) -> None:
+    bar_width = int(float(current_value) / maximum_value * total_width)
+
+    console.draw_rect(x=0, y=45, width=20, height=1, ch=1, bg=color.bar_empty)
+
+    if bar_width > 0:
+        console.draw_rect(
+            x=0,
+            y=45,
+            width=bar_width,
+            height=1,
+            ch=1,
+            bg=color.bar_filled
+        )
+
+    console.print(
+        x=1,
+        y=45,
+        string=f"HP: {current_value}/{maximum_value}",
+        fg=color.bar_text,
+    )