From 31ae39ab155244d134f8a093eacd447e0ba6533c Mon Sep 17 00:00:00 2001
From: Nicolas Margulies <nicomarg@crans.org>
Date: Fri, 6 Nov 2020 15:34:24 +0100
Subject: [PATCH] basic display wrapper

---
 dungeonbattle/display/__init__.py   |  0
 dungeonbattle/display/display.py    | 11 ++++++++++
 dungeonbattle/display/mapdisplay.py | 31 +++++++++++++++++++++++++++++
 3 files changed, 42 insertions(+)
 create mode 100644 dungeonbattle/display/__init__.py
 create mode 100644 dungeonbattle/display/display.py
 create mode 100644 dungeonbattle/display/mapdisplay.py

diff --git a/dungeonbattle/display/__init__.py b/dungeonbattle/display/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/dungeonbattle/display/display.py b/dungeonbattle/display/display.py
new file mode 100644
index 0000000..86c76b1
--- /dev/null
+++ b/dungeonbattle/display/display.py
@@ -0,0 +1,11 @@
+import curses
+from .mapdisplay import MapDisplay
+
+class Display:
+    def __init__(self, game, screen):
+        self.screen = screen
+        self.game = game
+        self.mapDisplay = MapDisplay(game.m, curses.LINES, curses.COLS * 4/5)
+    
+    def refresh(self):
+        self.mapDisplay.refresh()
\ No newline at end of file
diff --git a/dungeonbattle/display/mapdisplay.py b/dungeonbattle/display/mapdisplay.py
new file mode 100644
index 0000000..471aa91
--- /dev/null
+++ b/dungeonbattle/display/mapdisplay.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+import curses
+from dungeonbattle.interfaces import Map
+
+class MapDisplay:
+
+    def __init__(self, m: Map, height: int, width: int):
+        self.width = width
+        self.height = height
+        self.map = m
+        self.pad = curses.newpad(m.height, m.width+1)
+
+    def update_pad(self):
+        self.pad.addstr(0, 0, self.map.draw_string())
+        for e in self.map.entities:
+            self.pad.addch(e.y, e.x, e.img)
+
+    def display(self, y, x):
+        deltay, deltax = (self.height // 2) + 1, (self.width //2) + 1
+        pminrow, pmincol = y-deltay, x-deltax
+        sminrow, smincol = max(-pminrow, 0), max(-pmincol, 0)
+        deltay, deltax = self.height - deltay, self.width - deltax
+        smaxrow = self.map.height - (y + deltay) + self.height -1
+        smaxrow = min(smaxrow, self.height-1)
+        smaxcol = self.map.width - (x + deltax) + self.width -1
+        smaxcol = min(smaxcol, self.width-1)
+        pminrow = max(0, min(self.map.height, pminrow)) 
+        pmincol = max(0, min(self.map.width, pmincol))
+        self.pad.clear()
+        self.update_pad()
+        self.pad.refresh(pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol)