squirrel-battle/dungeonbattle/display/mapdisplay.py

#!/usr/bin/env python
import curses

from dungeonbattle.display.texturepack import TexturePack
from dungeonbattle.interfaces import Map


class MapDisplay:

    def __init__(self, m: Map, pack: TexturePack, height: int, width: int,
                 init_pad: bool = True):
        self.width = width
        self.height = height
        self.pack = pack
        self.map = m
        if init_pad:
            self.pad = curses.newpad(m.height, m.width + 1)

    def update_pad(self):
        self.pad.addstr(0, 0, self.map.draw_string(self.pack))
        for e in self.map.entities:
            self.pad.addstr(e.y, e.x, self.pack.PLAYER)

    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)