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/* kc3
 * Copyright from 2022 to 2025 kmx.io <contact@kmx.io>
 *
 * Permission is hereby granted to use this software granted the above
 * copyright notice and this permission paragraph are included in all
 * copies and substantial portions of this software.
 *
 * THIS SOFTWARE IS PROVIDED "AS-IS" WITHOUT ANY GUARANTEE OF
 * PURPOSE AND PERFORMANCE. IN NO EVENT WHATSOEVER SHALL THE
 * AUTHOR BE CONSIDERED LIABLE FOR THE USE AND PERFORMANCE OF
 * THIS SOFTWARE.
 */
#include <stdlib.h>
#include <libkc3/kc3.h>
#include "../../window.h"
#include "../gl_font.h"
#include "../gl_lines.h"
#include "../mat4.h"
#include "../gl_ortho.h"
#include "../gl_square.h"
#include "../gl_text.h"
#include "../gl_sprite.h"
#include "../window_sdl2.h"
#include "console.h"
#include "game.h"
#include "help.h"
#include "info.h"
#include "intro.h"
#include "menu.h"
#include "kubz.h"

#define KUBZ_SEQUENCE_COUNT 2

s_gl_font   g_font_courier_new = {0};
s_gl_ortho  g_ortho = {0};
s_gl_square g_square = {0};
s_gl_text   g_text_fps = {0};
s_gl_text   g_text_seq_title = {0};

static bool g_help_show = false;
static bool g_info_show = false;
static bool g_menu_show = false;

static bool kubz_button (s_window_sdl2 *window, u8 button,
                         s64 x, s64 y);
static bool kubz_key (s_window_sdl2 *window, SDL_Keysym *keysym);
static bool kubz_load (s_window_sdl2 *window);
static bool kubz_render (s_window_sdl2 *window);
static bool kubz_resize (s_window_sdl2 *window, u64 w, u64 h);
static void kubz_unload (s_window_sdl2 *window);

bool kubz_button (s_window_sdl2 *window, u8 button, s64 x, s64 y)
{
  assert(window);
  (void) window;
  err_write_1("kc3_kubz_button: ");
  err_inspect_u8(&button);
  err_write_1(" (");
  err_inspect_s64(&x);
  err_write_1(", ");
  err_inspect_s64(&y);
  err_puts(")");
  if (window->seq && window->seq->button &&
      ! window->seq->button(window->seq, button, x, y))
    return false;
  return true;
}

bool kubz_key (s_window_sdl2 *window, SDL_Keysym *keysym)
{
  s32 k;
  assert(window);
  assert(keysym);
  (void) window;
  switch (keysym->sym) {
  case SDLK_ESCAPE:
    if (window->sequence_pos == 0) {
      g_kc3_exit_code = 0;
      return false;
    }
    else if (window->sequence_pos == 1 &&
             (g_menu_show = ! g_menu_show)) {
      g_help_show = false;
      g_info_show = false;
    }
    break;
  case SDLK_F1:
    if (window->sequence_pos == 1 &&
        (g_help_show = ! g_help_show)) {
      g_info_show = false;
      g_menu_show = false;
    }
    break;
  case SDLK_F3:
    if (window->sequence_pos == 1 &&
        (g_info_show = ! g_info_show)) {
      g_help_show = false;
      g_menu_show = false;
    }
    break;
  case SDLK_F4:
    if (window->sequence_pos == 1)
      console_toggle();
    break;
  case SDLK_F11:
    if (! window->fullscreen) {
      if (SDL_SetWindowFullscreen(window->sdl_window,
                                  SDL_WINDOW_FULLSCREEN_DESKTOP)) {
        err_write_1("kubz_key:"
                    " SDL_SetWindowFullscreen(:desktop): ");
        err_puts(SDL_GetError());
        SDL_MaximizeWindow(window->sdl_window);
      }
    }
    else {
      if (SDL_SetWindowFullscreen(window->sdl_window, 0)) {
        err_write_1("kubz_key:"
                    " SDL_SetWindowFullscreen(0): ");
        err_puts(SDL_GetError());
        SDL_RestoreWindow(window->sdl_window);
      }
    }
    window->fullscreen = ! window->fullscreen;
    return true;
  case SDLK_q:
    if (g_menu_show) {
      err_puts("kubz_key: exiting normally from menu");
      g_kc3_exit_code = 0;
      return false;
    }
    break;
  case SDLK_RIGHT:
    if (! window_set_sequence_pos((s_window *) window, 1))
      return false;
    break;
  default:
    k = keysym->sym;
    err_write_1("kc3_kubz_key: ");
    err_inspect_s32_decimal(&k);
    err_write_1("\n");
  }
  return true;
}

bool kubz_load (s_window_sdl2 *window)
{
  f32 point_per_pixel;
  assert(window);
  assert(glGetError() == GL_NO_ERROR);
  point_per_pixel = (f32) window->w / window->gl_w;
  err_write_1("point_per_pixel: ");
  err_inspect_f32(&point_per_pixel);
  err_write_1("\n");
  if (window->sequence_count != KUBZ_SEQUENCE_COUNT) {
    err_write_1("kubz_load: window->sequence_count = ");
    err_inspect_u32_decimal(&window->sequence_count);
    err_write_1("\n");
    assert(window->sequence_count == KUBZ_SEQUENCE_COUNT);
    return false;
  }
  if (! gl_ortho_init(&g_ortho))
    return false;
  gl_ortho_resize(&g_ortho, 0, window->w, 0, window->h, 0, 1);
  if (! gl_font_init(&g_font_courier_new,
                     "fonts/Courier New/Courier New.ttf",
                     point_per_pixel))
    return false;
  if (! gl_text_init_1(&g_text_seq_title, &g_font_courier_new, ""))
    return false;
  if (! gl_text_init_1(&g_text_fps, &g_font_courier_new, "0.00"))
    return false;
  sequence_init(window->sequence, 13.0, "Introduction",
                intro_load, intro_render, intro_unload,
                window);
  sequence_init(window->sequence + 1, -1.0, "Kubz",
                game_load, game_render, game_unload,
                window);
  window_set_sequence_pos((s_window *) window, 0);
  return true;
}

bool kubz_render (s_window_sdl2 *window)
{
  s_sequence *seq;
  assert(window);
  assert(glGetError() == GL_NO_ERROR);
  if (! window_animate((s_window *) window))
    return false;
  seq = window->seq;
  mat4_init_identity(&g_ortho.model_matrix);
  gl_ortho_render(&g_ortho);
  glDisable(GL_DEPTH_TEST);
  glEnable(GL_BLEND);
  glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA,
                      GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
  assert(glGetError() == GL_NO_ERROR);
  if (! seq->render(seq))
    return false;
  assert(glGetError() == GL_NO_ERROR);
  /* 2D */
  gl_ortho_render(&g_ortho);
  glDisable(GL_DEPTH_TEST);
  glEnable(GL_BLEND);
  glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA,
                      GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
  assert(glGetError() == GL_NO_ERROR);
  gl_font_set_size(&g_font_courier_new, 20);
  if (g_help_show) {
    if (! help_render(window))
      return false;
  }
  else if (g_info_show) {
    if (! info_render(window, seq))
      return false;
  }
  else if (g_menu_show) {
    if (! menu_render(window))
      return false;
  }
  gl_ortho_render_end(&g_ortho);
  return true;
}

bool kubz_resize (s_window_sdl2 *window, u64 w, u64 h)
{
  assert(window);
  (void) window;
  assert(glGetError() == GL_NO_ERROR);
  gl_ortho_resize(&g_ortho, 0, w, 0, h, 0, 1);
  assert(glGetError() == GL_NO_ERROR);
  return true;
}

void kubz_unload (s_window_sdl2 *window)
{
  assert(window);
  (void) window;
  if (g_ortho.gl_shader_program) {
    gl_ortho_clean(&g_ortho);
    gl_font_clean(&g_font_courier_new);
  }
}

int main (int argc, char **argv)
{
  s_window_sdl2 window;
  if (FT_Init_FreeType(&g_ft)) {
    err_puts("main: failed to initialize FreeType");
    return 1;
  }
  if (! kc3_init(NULL, &argc, &argv)) {
    err_puts("main: kc3_init");
    return 1;
  }
  window_sdl2_init(&window, 50, 50, 800, 600,
                   "Kubz",
                   KUBZ_SEQUENCE_COUNT);
  window.button = kubz_button;
  window.key    = kubz_key;
  window.load   = kubz_load;
  window.render = kubz_render;
  window.resize = kubz_resize;
  window.unload = kubz_unload;
  if (! window_sdl2_run(&window)) {
    err_puts("window_sdl2_run -> false");
    window_sdl2_clean(&window);
    kc3_clean(NULL);
    SDL_Quit();
    return g_kc3_exit_code;
  }
  window_sdl2_clean(&window);
  kc3_clean(NULL);
  SDL_Quit();
  FT_Done_FreeType(g_ft);
  return 0;
}
kc3-lang/kubz/kubz.c

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kubz.c
