Draw grid of boxes in MIPS assembly language
Create the “class” (.struct) box
- create two instances of box
- single line
- double line
- write void box.draw(int x:a0, int y:a1, int width:a2, int height:a3, box * b:s0)
- write a main program to ask the user for the difficulty level , input their answer, clear the screen and draw the boxes (use the double outline).
- write a program (any language) to process the word list in course material, and filter out words that are longer than 3 letters…(you may leave or reject shorter words) Be sure to preserve Capitalization of words as some may be proper nouns or pronouns ( “I” “Jay” “Ron” “Dan”).
Write your harvested word list back to a new file, one word per line. - submit your .asm and your word list file (.txt)
Solution
filter.cpp
#include<iostream>
#include<fstream>
#include<string>
#include<cstdlib>
int main() {
std::cout<<“Enter the words filename: “;
std::string l;
std::cin>>l;
std::ifstream f(l.c_str());
if(!f.is_open())
std::cout<<“File not found!\n”,exit(1);
std::ofstream o(“filtered.txt”);
while(getline(f,l)) {
std::size_t y=l.find_last_not_of(“\r\n”);
(y!=std::string::npos)? l.erase(y+1),((l[0]&&l.length()<=3)? o<<l<<std::endl,1 : 2) : 3;
}
o.close(),f.close();
return 0;
}
boxes.asm
.data
prompt: .asciiz “Enter difficulty level: ”
errmsg: .asciiz “Invalid level, must be between 1 and 6.\n”
sz: .byte 1,2,2,3,3,4
.data
box: .struct
ctl: .byte 0
ctr: .byte 0
cbl: .byte 0
cbr: .byte 0
ch: .byte 0
cv: .byte 0
.data
box1: .byte 218,191,192,217,196,179
box2: .byte 201,187,200,188,205,186
.code
.globl main
main:
la $a0,prompt
syscall $print_string
syscall $read_int
blt $v0,1,error
bgt $v0,6,error
addi $t0,$0,25
addi $a0,$0,10
1: syscall $print_char
addi $t0,$t0,-1
bnez $t0,1b
add $t2,$v0,-1
la $t1,sz
add $t1,$t1,$t2
lb $t2,($t1)
add $v0,$v0,1
sub $t4,$v0,$t2
addi $t0,$0,1
sll $t4,$t0,$t4
addi $t0,$0,1
sll $t3,$t0,$t2
1: add $t5,$0,$t3
2: addi $a2,$0,5
addi $a3,$0,3
addi $a0,$t5,-1
mult $a0,$a2
mflo $a0
addi $a1,$t4,-1
mult $a1,$a3
mflo $a1
la $s0,box2
jalbox_draw
addi $t5,$t5,-1
bnez $t5,2b
addi $t4,$t4,-1
bnez $t4,1b
syscall $exit
error:
la $a0,errmsg
syscall $print_string
b main
# voidbox.draw(int x:a0, int y:a1, int width:a2, int height:a3, box * b:s0)
box_draw:
add $t0,$a0,$0
add $t1,$a1,$0
add $a2,$a2,-1
add $a3,$a3,-1
syscall $xy
lb $a0,box.ctl($s0)
syscall $print_char
add $a0,$t0,$a2
add $a1,$t1,$0
syscall $xy
lb $a0,box.ctr($s0)
syscall $print_char
add $a0,$t0,$0
add $a1,$t1,$a3
syscall $xy
lb $a0,box.cbl($s0)
syscall $print_char
add $a0,$t0,$a2
add $a1,$t1,$a3
syscall $xy
lb $a0,box.cbr($s0)
syscall $print_char
addi $t2,$0,1
forw:
add $a0,$t0,$t2
add $a1,$t1,$0
syscall $xy
lb $a0,box.ch($s0)
syscall $print_char
add $a0,$t0,$t2
add $a1,$t1,$a3
syscall $xy
lb $a0,box.ch($s0)
syscall $print_char
addi $t2,$t2,1
blt $t2,$a2,forw
addi $t2,$0,1
forh:
add $a0,$t0,$0
add $a1,$t1,$t2
syscall $xy
lb $a0,box.cv($s0)
syscall $print_char
add $a0,$t0,$a2
add $a1,$t1,$t2
syscall $xy
lb $a0,box.cv($s0)
syscall $print_char
addi $t2,$t2,1
blt $t2,$a3,forh
jr $ra
