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-animator!
  30             add-camera-scene-node!
  31             add-camera-scene-node-fps!
  32             add-custom-scene-node!
  33             add-octree-scene-node
  34             create-rotation-animator
  35             get-mesh
  36             get-root-scene-node
  37             scene-draw-all
  38             set-material-flag!
  39             set-material-texture!
  40             set-md2-animation!
  41             set-position!))
  42
  43 (define* (add-animated-mesh-scene-node scene-manager mesh
  44                                        #:key
  45                                        (parent %null-pointer)
  46                                        (id -1)
  47                                        (position '(0 0 0))
  48                                        (rotation '(0 0 0))
  49                                        (scale '(1 1 1))
  50                                        (also-add-if-mesh-pointer-zero #f))
  51   (let ((node (ffi-scene:add-animated-mesh-scene-node
  52                scene-manager
  53                mesh
  54                parent
  55                id
  56                (ffi-core:vector3df->pointer position)
  57                (ffi-core:vector3df->pointer rotation)
  58                (ffi-core:vector3df->pointer scale)
  59                (bool->integer also-add-if-mesh-pointer-zero))))
  60     (if (null-pointer? node) #f node)))
  61
  62 (define (add-animator! node animator)
  63   (ffi-scene:add-animator node animator))
  64
  65 (define* (add-camera-scene-node! scene-manager
  66                                  #:key
  67                                  (parent %null-pointer)
  68                                  (position '(0 0 0))
  69                                  (lookat '(0 0 100))
  70                                  (id -1)
  71                                  (make-active #t))
  72   (let ((camera (ffi-scene:add-camera-scene-node
  73                  scene-manager
  74                  parent
  75                  (ffi-core:vector3df->pointer position)
  76                  (ffi-core:vector3df->pointer lookat)
  77                  id
  78                  (bool->integer make-active))))
  79     (if (null-pointer? camera) #f camera)))
  80
  81 (define* (add-camera-scene-node-fps! scene-manager
  82                                      #:key
  83                                      (parent %null-pointer)
  84                                      (rotate-speed 100.0)
  85                                      (move-speed 0.5)
  86                                      (id -1)
  87                                      (key-map-array %null-pointer)
  88                                      (key-map-size 0)
  89                                      (no-vertical-movement #f)
  90                                      (jump-speed 0.0)
  91                                      (invert-mouse #f)
  92                                      (make-active #t))
  93   (ffi-scene:add-camera-scene-node-fps
  94    scene-manager
  95    parent
  96    rotate-speed
  97    move-speed
  98    id
  99    key-map-array
 100    key-map-size
 101    (bool->integer no-vertical-movement)
 102    jump-speed
 103    (bool->integer invert-mouse)
 104    (bool->integer make-active)))
 105
 106 (define* (add-custom-scene-node! scene-manager
 107                                  render
 108                                  get-bounding-box
 109                                  get-material-count
 110                                  get-material
 111                                  #:key
 112                                  (parent %null-pointer)
 113                                  (id -1)
 114                                  (position '(0 0 0))
 115                                  (rotation '(0 0 0))
 116                                  (scale '(1 1 1)))
 117   (let ((c-get-bounding-box
 118          (lambda ()
 119            (ffi-core:aabbox3df->pointer (get-bounding-box))))
 120         (c-get-material
 121          (lambda (i)
 122            (ffi-video:smaterial->pointer (get-material i)))))
 123     (ffi-scene:add-custom-scene-node
 124      scene-manager
 125      parent
 126      id
 127      (ffi-core:vector3df->pointer position)
 128      (ffi-core:vector3df->pointer rotation)
 129      (ffi-core:vector3df->pointer scale)
 130      (procedure->pointer void render '())
 131      (procedure->pointer '* c-get-bounding-box '())
 132      (procedure->pointer uint32 get-material-count '())
 133      (procedure->pointer '* c-get-material (list uint32)))))
 134
 135 (define* (add-octree-scene-node scene-manager mesh
 136                                 #:key
 137                                 (parent %null-pointer)
 138                                 (id -1)
 139                                 (minimal-polys-per-node 512)
 140                                 (also-add-if-mesh-pointer-zero #f))
 141   (ffi-scene:add-octree-scene-node
 142    scene-manager
 143    mesh
 144    parent
 145    id
 146    minimal-polys-per-node
 147    (bool->integer also-add-if-mesh-pointer-zero)))
 148
 149 (define (create-rotation-animator scene-manager rotation-speed)
 150   (let ((animator (ffi-scene:create-rotation-animator
 151                    scene-manager
 152                    (ffi-core:vector3df->pointer rotation-speed))))
 153     (if (null-pointer? animator) #f animator)))
 154
 155 (define (get-mesh scene-manager filename)
 156   (let ((mesh (ffi-scene:get-mesh scene-manager (string->pointer filename))))
 157     (if (null-pointer? mesh) #f mesh)))
 158
 159 (define (get-root-scene-node scene-manager)
 160   (ffi-scene:get-root-scene-node scene-manager))
 161
 162 (define (scene-draw-all scene-manager)
 163   (ffi-scene:draw-all scene-manager))
 164
 165 (define (set-material-flag! node flag newvalue)
 166   (let ((material-flag
 167          (match flag
 168                 ('wireframe ffi-video:EMF_WIREFRAME)
 169                 ('pointcloud ffi-video:EMF_POINTCLOUD)
 170                 ('gouraud-shading ffi-video:EMF_GOURAUD_SHADING)
 171                 ('lighting ffi-video:EMF_LIGHTING)
 172                 ('zbuffer ffi-video:EMF_ZBUFFER)
 173                 ('zwrite-enable ffi-video:EMF_ZWRITE_ENABLE)
 174                 ('back-face-culling ffi-video:EMF_BACK_FACE_CULLING)
 175                 ('front-face-culling ffi-video:EMF_FRONT_FACE_CULLING)
 176                 ('bilinear-filter ffi-video:EMF_BILINEAR_FILTER)
 177                 ('trilinear-filter ffi-video:EMF_TRILINEAR_FILTER)
 178                 ('anisotropic-filter ffi-video:EMF_ANISOTROPIC_FILTER)
 179                 ('fog-enable ffi-video:EMF_FOG_ENABLE)
 180                 ('normalize-normals ffi-video:EMF_NORMALIZE_NORMALS)
 181                 ('texture-wrap ffi-video:EMF_TEXTURE_WRAP)
 182                 ('anti-aliasing ffi-video:EMF_ANTI_ALIASING)
 183                 ('color-mask ffi-video:EMF_COLOR_MASK)
 184                 ('color-material ffi-video:EMF_COLOR_MATERIAL)
 185                 ('use-mip-maps ffi-video:EMF_USE_MIP_MAPS)
 186                 ('blend-operation ffi-video:EMF_BLEND_OPERATION)
 187                 ('polygon-offset ffi-video:EMF_POLYGON_OFFSET))))
 188     (ffi-scene:set-material-flag
 189      node
 190      material-flag
 191      (bool->integer newvalue))))
 192
 193 (define (set-material-texture! node texture-layer texture)
 194   (ffi-scene:set-material-texture node texture-layer texture))
 195
 196 (define (set-md2-animation! node anim)
 197   (let ((animation-type
 198          (match anim
 199                 ('stand ffi-scene:EMAT_STAND)
 200                 ('run ffi-scene:EMAT_RUN)
 201                 ('attack ffi-scene:EMAT_ATTACK)
 202                 ('pain-a ffi-scene:EMAT_PAIN_A)
 203                 ('pain-b ffi-scene:EMAT_PAIN_B)
 204                 ('pain-c ffi-scene:EMAT_PAIN_C)
 205                 ('jump ffi-scene:EMAT_JUMP)
 206                 ('flip ffi-scene:EMAT_FLIP)
 207                 ('salute ffi-scene:EMAT_SALUTE)
 208                 ('fallback ffi-scene:EMAT_FALLBACK)
 209                 ('wave ffi-scene:EMAT_WAVE)
 210                 ('point ffi-scene:EMAT_POINT)
 211                 ('crouch-stand ffi-scene:EMAT_CROUCH_STAND)
 212                 ('crouch-walk ffi-scene:EMAT_CROUCH_WALK)
 213                 ('crouch-attack ffi-scene:EMAT_CROUCH_ATTACK)
 214                 ('crouch-pain ffi-scene:EMAT_CROUCH_PAIN)
 215                 ('crouch-death ffi-scene:EMAT_CROUCH_DEATH)
 216                 ('death-fallback ffi-scene:EMAT_DEATH_FALLBACK)
 217                 ('death-fallforward ffi-scene:EMAT_DEATH_FALLFORWARD)
 218                 ('death-fallbackslow ffi-scene:EMAT_DEATH_FALLBACKSLOW)
 219                 ('boom ffi-scene:EMAT_BOOM)
 220                 ('count ffi-scene:EMAT_COUNT))))
 221     (ffi-scene:set-md2-animation
 222      node
 223      animation-type)))
 224
 225 (define (set-position! node newpos)
 226   (ffi-scene:set-position
 227    node
 228    (ffi-core:vector3df->pointer newpos)))