Class: Doom::Render::WeaponRenderer

Inherits:
Object
  • Object
show all
Defined in:
lib/doom/render/weapon_renderer.rb

Overview

Renders the first-person weapon view

Constant Summary collapse

WEAPON_AREA_HEIGHT =

Weapon is rendered above the status bar

SCREEN_HEIGHT - StatusBar::STATUS_BAR_HEIGHT
WEAPONTOP =

Chocolate Doom R_DrawPSprite weapon positioning: centery = viewheight/2 (view area excluding status bar) texturemid = centery - (WEAPONTOP - spritetopoffset) dc_yl = centery - texturemid (first visible row)

32
VIEW_CENTERY =

104

(SCREEN_HEIGHT - StatusBar::STATUS_BAR_HEIGHT) / 2

Instance Method Summary collapse

Constructor Details

#initialize(hud_graphics, player_state) ⇒ WeaponRenderer

Returns a new instance of WeaponRenderer.



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# File 'lib/doom/render/weapon_renderer.rb', line 17

def initialize(hud_graphics, player_state)
  @gfx = hud_graphics
  @player = player_state
end

Instance Method Details

#render(framebuffer) ⇒ Object 



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# File 'lib/doom/render/weapon_renderer.rb', line 22

def render(framebuffer)
  weapon_name = @player.weapon_name
  weapon_data = @gfx.weapons[weapon_name]
  return unless weapon_data

  # Get the appropriate frame
  sprite = if @player.attacking && weapon_data[:fire]&.any?
             frame = @player.attack_frame.clamp(0, weapon_data[:fire].length - 1)
             weapon_data[:fire][frame]
           else
             weapon_data[:idle]
           end

  return unless sprite

  # Bob offset (frozen during attack to keep weapon steady)
  bob_x = @player.attacking ? 0 : @player.weapon_bob_x.to_i
  bob_y = @player.attacking ? 0 : @player.weapon_bob_y.to_i

  # Chocolate Doom on 200px: dc_yl = WEAPONTOP - topoffset
  # Our view area is 208px (240-32 status bar) vs DOOM's 168px (200-32)
  # Offset by half the extra height to keep weapon centered in view
  x = 1 - sprite.left_offset + bob_x
  y = WEAPONTOP - sprite.top_offset + 20 + bob_y

  draw_weapon_sprite(framebuffer, sprite, x, y)

  # Draw muzzle flash only on the first fire frame (the actual shot)
  if @player.attacking && @player.attack_frame == 0
    draw_muzzle_flash(framebuffer, weapon_name)
  end
end