irrlicht/scene.scm

   1 ;;; guile-irrlicht --- FFI bindings for Irrlicht Engine
   2 ;;; Copyright (C) 2019 Javier Sancho <jsf@jsancho.org>
   3 ;;;
   4 ;;; This file is part of guile-irrlicht.
   5 ;;;
   6 ;;; Guile-irrlicht is free software; you can redistribute it and/or modify
   7 ;;; it under the terms of the GNU Lesser General Public License as
   8 ;;; published by the Free Software Foundation; either version 3 of the
   9 ;;; License, or (at your option) any later version.
  10 ;;;
  11 ;;; Guile-irrlicht is distributed in the hope that it will be useful, but
  12 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
  13 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 ;;; General Public License for more details.
  15 ;;;
  16 ;;; You should have received a copy of the GNU Lesser General Public
  17 ;;; License along with guile-irrlicht.  If not, see
  18 ;;; <http://www.gnu.org/licenses/>.
  19
  20
  21 (define-module (irrlicht scene)
  22   #:use-module (ice-9 match)
  23   #:use-module (system foreign)
  24   #:use-module ((irrlicht bindings core) #:prefix ffi-core:)
  25   #:use-module ((irrlicht bindings scene) #:prefix ffi-scene:)
  26   #:use-module ((irrlicht bindings video) #:prefix ffi-video:)
  27   #:use-module (irrlicht util)
  28   #:export (add-animated-mesh-scene-node
  29             add-camera-scene-node!
  30             add-camera-scene-node-fps!
  31             add-custom-scene-node!
  32             add-octree-scene-node
  33             get-mesh
  34             get-root-scene-node
  35             scene-draw-all
  36             set-material-flag!
  37             set-material-texture!
  38             set-md2-animation!
  39             set-position!))
  40
  41 (define* (add-animated-mesh-scene-node scene-manager mesh
  42                                        #:key
  43                                        (parent %null-pointer)
  44                                        (id -1)
  45                                        (position '(0 0 0))
  46                                        (rotation '(0 0 0))
  47                                        (scale '(1 1 1))
  48                                        (also-add-if-mesh-pointer-zero #f))
  49   (let ((node (ffi-scene:add-animated-mesh-scene-node
  50                scene-manager
  51                mesh
  52                parent
  53                id
  54                (ffi-core:vector3df->pointer position)
  55                (ffi-core:vector3df->pointer rotation)
  56                (ffi-core:vector3df->pointer scale)
  57                (bool->integer also-add-if-mesh-pointer-zero))))
  58     (if (null-pointer? node) #f node)))
  59
  60 (define* (add-camera-scene-node! scene-manager
  61                                  #:key
  62                                  (parent %null-pointer)
  63                                  (position '(0 0 0))
  64                                  (lookat '(0 0 100))
  65                                  (id -1)
  66                                  (make-active #t))
  67   (let ((camera (ffi-scene:add-camera-scene-node
  68                  scene-manager
  69                  parent
  70                  (ffi-core:vector3df->pointer position)
  71                  (ffi-core:vector3df->pointer lookat)
  72                  id
  73                  (bool->integer make-active))))
  74     (if (null-pointer? camera) #f camera)))
  75
  76 (define* (add-camera-scene-node-fps! scene-manager
  77                                      #:key
  78                                      (parent %null-pointer)
  79                                      (rotate-speed 100.0)
  80                                      (move-speed 0.5)
  81                                      (id -1)
  82                                      (key-map-array %null-pointer)
  83                                      (key-map-size 0)
  84                                      (no-vertical-movement #f)
  85                                      (jump-speed 0.0)
  86                                      (invert-mouse #f)
  87                                      (make-active #t))
  88   (ffi-scene:add-camera-scene-node-fps
  89    scene-manager
  90    parent
  91    rotate-speed
  92    move-speed
  93    id
  94    key-map-array
  95    key-map-size
  96    (bool->integer no-vertical-movement)
  97    jump-speed
  98    (bool->integer invert-mouse)
  99    (bool->integer make-active)))
 100
 101 (define* (add-custom-scene-node! scene-manager
 102                                  render
 103                                  get-bounding-box
 104                                  get-material-count
 105                                  get-material
 106                                  #:key
 107                                  (parent %null-pointer)
 108                                  (id -1)
 109                                  (position '(0 0 0))
 110                                  (rotation '(0 0 0))
 111                                  (scale '(1 1 1)))
 112   (let ((c-get-bounding-box
 113          (lambda ()
 114            (ffi-core:aabbox3df->pointer (get-bounding-box))))
 115         (c-get-material
 116          (lambda (i)
 117            (ffi-core:material->pointer (get-material i)))))
 118     (ffi-scene:add-custom-scene-node
 119      scene-manager
 120      parent
 121      id
 122      (ffi-core:vector3df->pointer position)
 123      (ffi-core:vector3df->pointer rotation)
 124      (ffi-core:vector3df->pointer scale)
 125      (procedure->pointer void render '())
 126      (procedure->pointer '* c-get-bounding-box '())
 127      (procedure->pointer uint32 get-material-count '())
 128      (procedure->pointer '* c-get-material (list uint32)))))
 129
 130 (define* (add-octree-scene-node scene-manager mesh
 131                                 #:key
 132                                 (parent %null-pointer)
 133                                 (id -1)
 134                                 (minimal-polys-per-node 512)
 135                                 (also-add-if-mesh-pointer-zero #f))
 136   (ffi-scene:add-octree-scene-node
 137    scene-manager
 138    mesh
 139    parent
 140    id
 141    minimal-polys-per-node
 142    (bool->integer also-add-if-mesh-pointer-zero)))
 143
 144 (define (get-mesh scene-manager filename)
 145   (let ((mesh (ffi-scene:get-mesh scene-manager (string->pointer filename))))
 146     (if (null-pointer? mesh) #f mesh)))
 147
 148 (define (get-root-scene-node scene-manager)
 149   (ffi-scene:get-root-scene-node scene-manager))
 150
 151 (define (scene-draw-all scene-manager)
 152   (ffi-scene:draw-all scene-manager))
 153
 154 (define (set-material-flag! node flag newvalue)
 155   (let ((material-flag
 156          (match flag
 157                 ('wireframe ffi-video:EMF_WIREFRAME)
 158                 ('pointcloud ffi-video:EMF_POINTCLOUD)
 159                 ('gouraud-shading ffi-video:EMF_GOURAUD_SHADING)
 160                 ('lighting ffi-video:EMF_LIGHTING)
 161                 ('zbuffer ffi-video:EMF_ZBUFFER)
 162                 ('zwrite-enable ffi-video:EMF_ZWRITE_ENABLE)
 163                 ('back-face-culling ffi-video:EMF_BACK_FACE_CULLING)
 164                 ('front-face-culling ffi-video:EMF_FRONT_FACE_CULLING)
 165                 ('bilinear-filter ffi-video:EMF_BILINEAR_FILTER)
 166                 ('trilinear-filter ffi-video:EMF_TRILINEAR_FILTER)
 167                 ('anisotropic-filter ffi-video:EMF_ANISOTROPIC_FILTER)
 168                 ('fog-enable ffi-video:EMF_FOG_ENABLE)
 169                 ('normalize-normals ffi-video:EMF_NORMALIZE_NORMALS)
 170                 ('texture-wrap ffi-video:EMF_TEXTURE_WRAP)
 171                 ('anti-aliasing ffi-video:EMF_ANTI_ALIASING)
 172                 ('color-mask ffi-video:EMF_COLOR_MASK)
 173                 ('color-material ffi-video:EMF_COLOR_MATERIAL)
 174                 ('use-mip-maps ffi-video:EMF_USE_MIP_MAPS)
 175                 ('blend-operation ffi-video:EMF_BLEND_OPERATION)
 176                 ('polygon-offset ffi-video:EMF_POLYGON_OFFSET))))
 177     (ffi-scene:set-material-flag
 178      node
 179      material-flag
 180      (bool->integer newvalue))))
 181
 182 (define (set-material-texture! node texture-layer texture)
 183   (ffi-scene:set-material-texture node texture-layer texture))
 184
 185 (define (set-md2-animation! node anim)
 186   (let ((animation-type
 187          (match anim
 188                 ('stand ffi-scene:EMAT_STAND)
 189                 ('run ffi-scene:EMAT_RUN)
 190                 ('attack ffi-scene:EMAT_ATTACK)
 191                 ('pain-a ffi-scene:EMAT_PAIN_A)
 192                 ('pain-b ffi-scene:EMAT_PAIN_B)
 193                 ('pain-c ffi-scene:EMAT_PAIN_C)
 194                 ('jump ffi-scene:EMAT_JUMP)
 195                 ('flip ffi-scene:EMAT_FLIP)
 196                 ('salute ffi-scene:EMAT_SALUTE)
 197                 ('fallback ffi-scene:EMAT_FALLBACK)
 198                 ('wave ffi-scene:EMAT_WAVE)
 199                 ('point ffi-scene:EMAT_POINT)
 200                 ('crouch-stand ffi-scene:EMAT_CROUCH_STAND)
 201                 ('crouch-walk ffi-scene:EMAT_CROUCH_WALK)
 202                 ('crouch-attack ffi-scene:EMAT_CROUCH_ATTACK)
 203                 ('crouch-pain ffi-scene:EMAT_CROUCH_PAIN)
 204                 ('crouch-death ffi-scene:EMAT_CROUCH_DEATH)
 205                 ('death-fallback ffi-scene:EMAT_DEATH_FALLBACK)
 206                 ('death-fallforward ffi-scene:EMAT_DEATH_FALLFORWARD)
 207                 ('death-fallbackslow ffi-scene:EMAT_DEATH_FALLBACKSLOW)
 208                 ('boom ffi-scene:EMAT_BOOM)
 209                 ('count ffi-scene:EMAT_COUNT))))
 210     (ffi-scene:set-md2-animation
 211      node
 212      animation-type)))
 213
 214 (define (set-position! node newpos)
 215   (ffi-scene:set-position
 216    node
 217    (ffi-core:vector3df->pointer newpos)))