unused_slides

=
-title: Development overview (txt)
-setcolour,1,FFF:

-rect,5,4,10,2:
-txt,6,5:C source
-pause:
-rect,24,4,10,2:
-txt,25,5:resource
-pause:
-tarrow,10,6,d,3:
-txt,12,7:cross compile
-pause:
-rect,5,9,10,2:
-txt,6,10:obj files
-pause:
-tarrow,29,6,d,5:
-txt,30,7: compile
-pause:
-rect,20,11,18,2:
-txt,21,12:compiled resource
-pause:
-tarrow,20,12,l,10:
-pause:
-rect,20,14,14,2:
-txt,21,15:SGDK library
-tarrow,20,15,l,10:
-tarrow,10,11,d,8:
-txt,12,17:link and other SGDK things
-rect,5,19,10,2:
-txt,6,20:rom.bin
-pause:
-txt,10,22:executable on Meaga Drive

=
-title:Resource declaration
-pz:
-txt,2,5:In resource.res:

IMAGE rk "img/rubykaigi.png" NONE ALL

=
-title:Resource usage
-txt,2,5:In C:

  VDP_drawImageEx(
    BG_A, rk,
    TILE_ATTR_FULL(
      PAL3, FALSE, FALSE, FALSE,
      TILE_USERINDEX + 1
    ),
    6, 6, FALSE, TRUE
  );

=
-title:Resource usage
-txt,2,5:In C:

static void c_draw_img(
  mrb_vm *vm, mrb_value *v, int argc
  ) {
  uint8_t x = mrbc_integer(v[1]);
  uint8_t y = mrbc_integer(v[2]);

  VDP_drawImage( ...
}

=
-title:Make method callable from mruby
-txt,2,5:In C:

mrb_class *cls =
  mrbc_define_class(
    vm, "MegaMrbc", mrbc_class_object
);

mrbc_define_method(
  vm, cls, "draw_image", c_draw_img
);

=
-title:Calling from ruby

-txt,2,5:In Ruby:

MegaMrbc.draw_image


=
-title:Main loop (simplified)
-txt,3,3:
def main_loop
  running = true
  cmd = :fwd

  while running do
    if cmd == :fwd
      page = next_page(@index)
      MegaMrbc.klog(
        "next_page: #{page}"
      )
    end

    MegaMrbc.wait_vblank

    cmd = MegaMrbc.wait_cmd
  end
end

=
-title:What is mruby?
-txt,3,5:` Another implementation of Ruby

` For embedded environments

` Integrates well with C
      (or other langs)

` Great for calling Ruby from C

` No require, no eval, no gem

` mrbgem to add features
      (at compile time)

=
-title:What is mruby/c?
-pz:
-txt,3,5:A project that makes a compact VM

 from
  Shimane IT Open-Innovation Center

 and
  Kyushu Institute of Technology



` Small, less memory over speed

` Limited class libraries

` Better concurrency support

` no mrbgem

=
-title:Resource decleration
-txt,1,5:In resource.res:

IMAGE rca "img/RubyConfAu.png" NONE ALL

This makes 'rca' available in memory
via ROM

=
-title:Resource usage
-txt,2,5:In C:

  VDP_drawImageEx(
    BG_A, rca,
    TILE_ATTR_FULL(
      PAL3, FALSE, FALSE, FALSE,
      TILE_USERINDEX + 1
    ),
    12, 3, FALSE, TRUE
  );

=
-title: Load and start Ruby code
-txt,2,2:
void mrubyc(const uint8_t *mrbbuf)
{
  mrbc_init_global();
  mrbc_init_class();

  mrbc_vm *vm = mrbc_vm_open(NULL);
  if(vm == 0) {
    return;
  }

  if(mrbc_load_mrb(vm, mrbbuf) != 0){
    return;
  }

  mrbc_vm_begin(vm);

  make_class(vm);

  mrbc_vm_run(vm);
  mrbc_vm_end(vm);
  mrbc_vm_close(vm);
}

=
-title: Slide example
-txt,1,5: =

 -title: Amazing Page Title

 -txt,2,5: Here's some text content

=
-title: Slide example
-txt,1,5: = <- new page

 -title: Amazing Page Title <- title

 -txt,2,5: Here's some text content

=
-title: Amazing Page Title
-txt,2,5: Here's some text content

=
-bgcol,000:
-title:What is Mega Drive?
-txt,5,5:` Sega Mega Drive aka Genesis

` Released in 1988

` Motorola 68000 at 7.6MHz

` "16-BIT"

` 64KB main RAM + 64KB VRAM

` Over 30M units sold worldwide