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JavaScript (ES6), 180 bytes

Expects an array of characters and returns a matrix of characters.

a=>a.map(c=>~C?1/c?m[y][x]=" ░▒▓█"[c]||C:c>"s"?y-=!!y:c>"d"?y+=y<24:c>"a"?x+=x<79:c>{}?x-=!!x:C=c>"!"?-1:m[y][x]:C=c,m=[...Array(25)].map(_=>[..."".padEnd(80)]),x=y=C=0)&&m

Try it online!