#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
// Ignore instead??
#define Pixel(Name, x, y) Name.Screen[ \
(assert((x) < Name.Width), assert((x) >= 0), (x)) + \
(assert((y) < Name.Height), assert((y) >= 0), (y)) * (Name.Width+1)+1 ]
typedef struct{
int Width;
int Height;
int Size;
char *Screen;
}screen;
screen ScreenInit(int Width, int Height)
{
screen Result = {Width, Height};
Result.Size = (Result.Width + 1) * Result.Height + 1;
Result.Screen = malloc(Result.Size);
for(int i = 0; i < Result.Size; ++i)
Result.Screen[i] = ' ';
for(int i = 0; i < Result.Height; ++i)
{
Result.Screen[(Result.Width+1) * i] = '\n';
}
Result.Screen[Result.Size-1] = 0;
return Result;
}
void Print(screen Screen, int x, int y, char *String);
void Square(screen Screen, int x, int y, int w, int h);
int main()
{
screen Screen = ScreenInit(80, 40);
#define p(x, y) Pixel(Screen, x, y)
Square(Screen,20,2,9,4);
Print(Screen,20,2,"Apples");
Print(Screen,20,3,"and Pears");
Print(Screen,20,4,"does not");
Print(Screen,20,5,"approve.");
p(0,0) = 'A';
p(2,4) = p(0,0);
p(3,4) = 'P';
p(4,4) = 'P';
p(5,4) = 'L';
p(6,4) = 'E';
p(7,4) = 'J';
p(10,4) = 'K';
for(int i = 0; i < 40; ++i)
{
p(i*2, i) = '0'+(i/10)%10;
p(i*2+1, i) = '0'+i%10;
}
printf(Screen.Screen);
return 0;
}
void Print(screen Screen, int x, int y, char *String)
{
for(int i = 0; String[i] != 0; ++i)
{
p(x+i,y) = String[i];
}
}
void Square(screen Screen, int x, int y, int w, int h)
{
for(int i = 0; i < w; ++i)
{
p(i+x,y-1) = '-';
p(i+x,y+h) = '-';
}
for(int i = 0; i < h; ++i)
{
p(x-1,y+i) = '|';
p(x+w,y+i) = '|';
}
p(x-1,y-1) = '+';
p(x+w,y-1) = '+';
p(x-1,y+h) = '+';
p(x+w,y+h) = '+';
}
