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rename 'menu' demo to 'bfr' build out more render helpers

main
Allen Webster 2026-05-18 10:44:41 -07:00
parent c12d877c8d
commit f4fdf28994
6 changed files with 264 additions and 184 deletions
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9
build_bfr.sh Executable file
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@ -0,0 +1,9 @@
#!/bin/bash
code="$PWD"
opts="-g -Wno-switch -I$code/src/mr4th/dependencies"
mkdir -p build
cd build
echo bfr
clang $opts $code/src/bfr.main.c -lncurses -o bfr

9
build_menu.sh
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@ -1,9 +0,0 @@
#!/bin/bash
code="$PWD"
opts="-g -Wno-switch"
mkdir -p build
cd build
echo menu
clang $opts $code/src/menu.main.c -lncurses -o menu

6
project.4coder
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@ -34,8 +34,8 @@ commands = {
.build_resize = { .out = "*compilation*", .footer_panel = true, .save_dirty_files = true,
.win = "build_resize.bat", .linux = "./build_resize.sh", .mac = "./build_resize.sh", },
.build_menu = { .out = "*compilation*", .footer_panel = true, .save_dirty_files = true,
.win = "build_menu.bat", .linux = "./build_menu.sh", .mac = "./build_menu.sh", },
.build_bfr = { .out = "*compilation*", .footer_panel = true, .save_dirty_files = true,
.win = "build_bfr.bat", .linux = "./build_bfr.sh", .mac = "./build_bfr.sh", },
};
fkey_command = {
@ -43,5 +43,5 @@ fkey_command = {
.F2 = "build_animate",
.F3 = "build_colors",
.F4 = "build_resize",
.F5 = "build_menu",
.F5 = "build_bfr",
};

242
src/bfr.main.c Normal file
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@ -0,0 +1,242 @@
#include "mr4th/mr4th_base.h"
#include "mr4th/mr4th_stdio.h"
#include "mr4th/mr4th_prng.h"
#include <ncurses.h>
#include "bfr.main.h"
#include "mr4th/mr4th_base.c"
#include "mr4th/mr4th_stdio.c"
#include "mr4th/mr4th_prng.c"
MR4TH_SYMBOL NCRS_Bfr
ncrs_bfr_alloc(Arena *arena, U32 w, U32 h){
NCRS_Bfr result = { w, h };
result.chr = push_array(arena, U8, w*h);
result.color = push_array(arena, U8, w*h);
result.clip.x1 = w;
result.clip.y1 = h;
return(result);
}
MR4TH_SYMBOL void
ncrs_bfr_clip_clear(NCRS_Bfr *bfr){
bfr->clip.x0 = 0;
bfr->clip.y0 = 0;
bfr->clip.x1 = bfr->w;
bfr->clip.y1 = bfr->h;
}
MR4TH_SYMBOL void
ncrs_bfr_clip(NCRS_Bfr *bfr, RectS32 rect){
bfr->clip.x0 = ClampBot(0, rect.x0);
bfr->clip.y0 = ClampBot(0, rect.y0);
bfr->clip.x1 = ClampTop(rect.x1, bfr->w);
bfr->clip.y1 = ClampTop(rect.y1, bfr->h);
}
MR4TH_SYMBOL void
ncrs_bfr_fill_rect(NCRS_Bfr *bfr, RectS32 rect, U8 chr, U8 color){
S32 x0 = ClampBot(rect.x0, bfr->clip.x0);
S32 x1 = ClampTop(rect.x1, bfr->clip.x1);
S32 y0 = ClampBot(rect.y0, bfr->clip.y0);
S32 y1 = ClampTop(rect.y1, bfr->clip.y1);
for (S32 iy = y0; iy < y1; iy += 1){
S32 iyb = iy*bfr->w;
for (S32 ix = x0; ix < x1; ix += 1){
bfr->chr[iyb + ix] = chr;
bfr->color[iyb + ix] = color;
}
}
}
MR4TH_SYMBOL void
ncrs_bfr_outline_rect(NCRS_Bfr *bfr, RectS32 rect, U8 chr, U8 color){
S32 x0 = ClampBot(rect.x0, bfr->clip.x0);
S32 x1 = ClampTop(rect.x1, bfr->clip.x1);
S32 y0 = ClampBot(rect.y0, bfr->clip.y0);
S32 y1 = ClampTop(rect.y1, bfr->clip.y1);
// top
if (bfr->clip.y0 <= rect.y0 && rect.y0 < bfr->clip.y1){
S32 iyb = rect.y0*bfr->w;
for (S32 ix = x0; ix < x1; ix += 1){
bfr->chr[iyb + ix] = chr;
bfr->color[iyb + ix] = color;
}
}
// bottom
if (bfr->clip.y0 < rect.y1 && rect.y1 <= bfr->clip.y1){
S32 iyb = (rect.y1 - 1)*bfr->w;
for (S32 ix = x0; ix < x1; ix += 1){
bfr->chr[iyb + ix] = chr;
bfr->color[iyb + ix] = color;
}
}
// left
if (bfr->clip.x0 <= rect.x0 && rect.x0 < bfr->clip.x1){
S32 ix = rect.x0;
for (S32 iy = y0; iy < y1; iy += 1){
S32 iyb = iy*bfr->w;
bfr->chr[iyb + ix] = chr;
bfr->color[iyb + ix] = color;
}
}
// right
if (bfr->clip.x0 < rect.x1 && rect.x1 <= bfr->clip.x1){
S32 ix = rect.x1 - 1;
for (S32 iy = y0; iy < y1; iy += 1){
S32 iyb = iy*bfr->w;
bfr->chr[iyb + ix] = chr;
bfr->color[iyb + ix] = color;
}
}
}
MR4TH_SYMBOL void
ncrs_bfr_write(NCRS_Bfr *bfr, S32 x, S32 y, String8 str, U8 color){
if (str.size > 0 &&
bfr->clip.x0 < x + str.size && x < bfr->clip.x1 &&
bfr->clip.y0 <= y && y < bfr->clip.y1){
S32 iyb = y*bfr->w;
S32 x1 = ClampTop(x + str.size, bfr->clip.x1);
S32 xskip = ClampBot(0, bfr->clip.x0 - x);
for (U32 xi = x + xskip, i = xskip; xi < x1; xi += 1, i += 1){
bfr->chr[iyb + xi] = str.str[i];
bfr->color[iyb + xi] = color;
}
}
}
MR4TH_SYMBOL void
ncrs_bfr_point(NCRS_Bfr *bfr, S32 x, S32 y, U8 chr, U8 color){
if (bfr->clip.x0 <= x && x < bfr->clip.x1 &&
bfr->clip.y0 <= y && y < bfr->clip.y1){
bfr->chr[y*bfr->w + x] = chr;
bfr->color[y*bfr->w + x] = color;
}
}
MR4TH_SYMBOL void
ncrs_bfr_to_window(NCRS_Bfr *bfr, WINDOW *window){
S32 w = 0;
S32 h = 0;
getmaxyx(window, h, w);
S32 x1 = ClampTop(bfr->w, w);
S32 y1 = ClampTop(bfr->h, h);
for (U32 iy = 0; iy < y1; iy += 1){
S32 iyb = iy*bfr->w;
wmove(window, iy, 0);
for (U32 ix = 0; ix < x1; ix += 1){
S16 color = (S16)bfr->color[iyb + ix];
if (color != 0){
attron(COLOR_PAIR(color));
}
waddch(window, bfr->chr[iyb + ix]);
attroff(COLOR_PAIR(color));
}
}
wrefresh(window);
}
int main(){
ArenaTemp scratch = arena_get_scratch(0, 0);
// prng
PRNG prng = {0};
{
PRNG_Seed seed;
os_get_entropy(&seed, sizeof(seed));
prng = prng_from_seed(&seed);
}
// initialize ncurses
initscr();
if (!has_colors()){
goto no_color;
}
start_color();
noecho();
cbreak();
curs_set(0);
// initialize ncurses colors
{
#define X(F,B) init_pair(NCRS_ColorPair_##F##_##B, COLOR_##F, COLOR_##B);
NCRS_ColorPair_XList(X)
#undef X
}
// virtual buffer
NCRS_Bfr bfr = ncrs_bfr_alloc(scratch.arena, 160, 40);
// background decorations
static U8 chr_array[] = {
'#', '%', '+', '~',
'*', '|', '-', '$',
'<', '\\', '/', '>',
',', ',', '.', '.',
' ', ' ', ' ', ' ',
' ', ' ', ' ', ' ',
' ', ' ', ' ', ' ',
' ', ' ', ' ', ' ',
' ', ' ', ' ', ' ',
' ', ' ', ' ', ' ',
};
static U8 color_array[] = {
NCRS_ColorPair_RED_BLACK, NCRS_ColorPair_GREEN_BLACK, NCRS_ColorPair_BLUE_BLACK,
NCRS_ColorPair_YELLOW_BLACK, NCRS_ColorPair_MAGENTA_BLACK, NCRS_ColorPair_CYAN_BLACK,
};
// program
for (;;){
// render to bfr
ncrs_bfr_fill_rect(&bfr, (RectS32){0, 0, 160, 40}, ' ', 0);
ncrs_bfr_outline_rect(&bfr, (RectS32){0, 0, 160, 40},
'#', NCRS_ColorPair_WHITE_BLACK);
ncrs_bfr_clip(&bfr, (RectS32){1, 1, 159, 39});
for (S32 iy = 0; iy < bfr.h; iy += 1){
for (S32 ix = 0; ix < bfr.w; ix += 1){
U8 chr = chr_array[prng_u32_bounded(&prng, ArrayCount(chr_array))];
U8 color = color_array[prng_u32_bounded(&prng, ArrayCount(color_array))];
ncrs_bfr_point(&bfr, ix, iy, chr, color);
}
}
ncrs_bfr_clip_clear(&bfr);
ncrs_bfr_fill_rect(&bfr, (RectS32){58, 8, 88, 19}, ' ', NCRS_ColorPair_WHITE_BLACK);
ncrs_bfr_outline_rect(&bfr, (RectS32){58, 8, 88, 19}, '#', NCRS_ColorPair_WHITE_BLACK);
ncrs_bfr_write(&bfr, 60, 10, str8_lit("Continue"), NCRS_ColorPair_BLACK_WHITE);
ncrs_bfr_write(&bfr, 60, 12, str8_lit("New Game (Abandon Current)"), NCRS_ColorPair_WHITE_BLACK);
ncrs_bfr_write(&bfr, 60, 14, str8_lit("Journal"), NCRS_ColorPair_WHITE_BLACK);
ncrs_bfr_write(&bfr, 60, 16, str8_lit("Quit"), NCRS_ColorPair_WHITE_BLACK);
// bfr -> screen
ncrs_bfr_to_window(&bfr, stdscr);
int c = getch();
}
// end ncurses
endwin();
if (0){ no_color:
endwin();
printf("no ncurses color support\n");
}
arena_release_scratch(&scratch);
return(0);
}

14
src/menu.main.h → src/bfr.main.h
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@ -1,5 +1,5 @@
#ifndef MENU_MAIN_H
#define MENU_MAIN_H
#ifndef BFR_MAIN_H
#define BFR_MAIN_H
/******************************************************************************
* NCRS Types *
@ -36,6 +36,8 @@ typedef struct NCRS_Bfr{
U32 h;
U8 *chr;
U8 *color;
RectS32 clip;
} NCRS_Bfr;
/******************************************************************************
@ -44,10 +46,14 @@ typedef struct NCRS_Bfr{
MR4TH_SYMBOL NCRS_Bfr ncrs_bfr_alloc(Arena *arena, U32 w, U32 h);
MR4TH_SYMBOL void ncrs_bfr_clip_clear(NCRS_Bfr *bfr);
MR4TH_SYMBOL void ncrs_bfr_clip(NCRS_Bfr *bfr, RectS32 rect);
MR4TH_SYMBOL void ncrs_bfr_fill_rect(NCRS_Bfr *bfr, RectS32 rect, U8 chr, U8 color);
MR4TH_SYMBOL void ncrs_bfr_outline_rect(NCRS_Bfr *bfr, RectS32 rect, U8 chr, U8 color);
MR4TH_SYMBOL void ncrs_bfr_write(NCRS_Bfr *bfr, S32 x, S32 y, S32 xmax, String8 str, U8 color);
MR4TH_SYMBOL void ncrs_bfr_write(NCRS_Bfr *bfr, S32 x, S32 y, String8 str, U8 color);
MR4TH_SYMBOL void ncrs_bfr_point(NCRS_Bfr *bfr, S32 x, S32 y, U8 chr, U8 color);
MR4TH_SYMBOL void ncrs_bfr_to_window(NCRS_Bfr *bfr, WINDOW *w);
#endif //MENU_MAIN_H
#endif //BFR_MAIN_H

168
src/menu.main.c
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@ -1,168 +0,0 @@
#include "mr4th/mr4th_base.h"
#include <ncurses.h>
#include "menu.main.h"
#include "mr4th/mr4th_base.c"
MR4TH_SYMBOL NCRS_Bfr
ncrs_bfr_alloc(Arena *arena, U32 w, U32 h){
NCRS_Bfr result = { w, h };
result.chr = push_array(arena, U8, w*h);
result.color = push_array(arena, U8, w*h);
return(result);
}
MR4TH_SYMBOL void
ncrs_bfr_fill_rect(NCRS_Bfr *bfr, RectS32 rect, U8 chr, U8 color){
S32 x0 = ClampBot(rect.x0, 0);
S32 x1 = ClampTop(rect.x1, bfr->w);
S32 y0 = ClampBot(rect.y0, 0);
S32 y1 = ClampTop(rect.y1, bfr->h);
for (S32 iy = y0; iy < y1; iy += 1){
S32 iyb = iy*bfr->w;
for (S32 ix = x0; ix < x1; ix += 1){
bfr->chr[iyb + ix] = chr;
bfr->color[iyb + ix] = color;
}
}
}
MR4TH_SYMBOL void
ncrs_bfr_outline_rect(NCRS_Bfr *bfr, RectS32 rect, U8 chr, U8 color){
S32 x0 = ClampBot(rect.x0, 0);
S32 x1 = ClampTop(rect.x1, bfr->w);
S32 y0 = ClampBot(rect.y0, 0);
S32 y1 = ClampTop(rect.y1, bfr->h);
// top
if (0 <= rect.y0 && rect.y0 < bfr->h){
S32 iyb = rect.y0*bfr->w;
for (S32 ix = x0; ix < x1; ix += 1){
bfr->chr[iyb + ix] = chr;
bfr->color[iyb + ix] = color;
}
}
// bottom
if (0 < rect.y1 && rect.y1 <= bfr->h){
S32 iyb = (rect.y1 - 1)*bfr->w;
for (S32 ix = x0; ix < x1; ix += 1){
bfr->chr[iyb + ix] = chr;
bfr->color[iyb + ix] = color;
}
}
// left
if (0 <= rect.x0 && rect.x0 < bfr->w){
S32 ix = rect.x0;
for (S32 iy = y0; iy < y1; iy += 1){
S32 iyb = iy*bfr->w;
bfr->chr[iyb + ix] = chr;
bfr->color[iyb + ix] = color;
}
}
// right
if (0 < rect.x1 && rect.x1 <= bfr->w){
S32 ix = rect.x1 - 1;
for (S32 iy = y0; iy < y1; iy += 1){
S32 iyb = iy*bfr->w;
bfr->chr[iyb + ix] = chr;
bfr->color[iyb + ix] = color;
}
}
}
MR4TH_SYMBOL void
ncrs_bfr_write(NCRS_Bfr *bfr, S32 x, S32 y, S32 xmax, String8 str, U8 color){
if (0 <= x && x < bfr->w && x < xmax &&
0 <= y && y < bfr->h){
S32 iyb = y*bfr->w;
S32 x1 = ClampTop(x + str.size, xmax);
for (U32 xi = x, i = 0; xi < x1; xi += 1, i += 1){
bfr->chr[iyb + xi] = str.str[i];
bfr->color[iyb + xi] = color;
}
}
}
MR4TH_SYMBOL void
ncrs_bfr_to_window(NCRS_Bfr *bfr, WINDOW *window){
S32 w = 0;
S32 h = 0;
getmaxyx(window, h, w);
S32 x1 = ClampTop(bfr->w, w);
S32 y1 = ClampTop(bfr->h, h);
for (U32 iy = 0; iy < y1; iy += 1){
S32 iyb = iy*bfr->w;
wmove(window, iy, 0);
for (U32 ix = 0; ix < x1; ix += 1){
S16 color = (S16)bfr->color[iyb + ix];
if (color != 0){
attron(COLOR_PAIR(color));
}
waddch(window, bfr->chr[iyb + ix]);
attroff(COLOR_PAIR(color));
}
}
wrefresh(window);
}
int main(){
ArenaTemp scratch = arena_get_scratch(0, 0);
// initializes ncurses
initscr();
if (!has_colors()){
goto no_color;
}
start_color();
noecho();
cbreak();
curs_set(0);
// colors
{
#define X(F,B) init_pair(NCRS_ColorPair_##F##_##B, COLOR_##F, COLOR_##B);
NCRS_ColorPair_XList(X)
#undef X
}
// virtual buffer
NCRS_Bfr bfr = ncrs_bfr_alloc(scratch.arena, 160, 40);
ncrs_bfr_fill_rect(&bfr, (RectS32){0, 0, 160, 40}, ' ', 0);
ncrs_bfr_outline_rect(&bfr, (RectS32){0, 0, 160, 40},
'#', NCRS_ColorPair_WHITE_BLACK);
ncrs_bfr_write(&bfr, 2, 2, 30, str8_lit("Continue"), NCRS_ColorPair_BLACK_WHITE);
ncrs_bfr_write(&bfr, 2, 4, 30, str8_lit("New Game (Abandon Current)"), NCRS_ColorPair_WHITE_BLACK);
ncrs_bfr_write(&bfr, 2, 6, 30, str8_lit("Custom Game Mode"), NCRS_ColorPair_WHITE_BLACK);
ncrs_bfr_write(&bfr, 2, 8, 30, str8_lit("Quite"), NCRS_ColorPair_WHITE_BLACK);
// program
for (;;){
// bfr -> screen
ncrs_bfr_to_window(&bfr, stdscr);
int c = getch();
}
// end ncurses
endwin();
if (0){ no_color:
endwin();
printf("no ncurses color support\n");
}
arena_release_scratch(&scratch);
return(0);
}