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                (make-c-struct ffi-core:vector3df position)
  55                (make-c-struct ffi-core:vector3df rotation)
  56                (make-c-struct ffi-core:vector3df 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                  (make-c-struct ffi-core:vector3df position)
  71                  (make-c-struct ffi-core:vector3df 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! parent
 102                                 scene-manager
 103                                 id
 104                                 custom-render)
 105   (ffi-scene:add-custom-scene-node
 106    parent
 107    scene-manager
 108    id
 109    (procedure->pointer void custom-render '())))
 110
 111 (define* (add-octree-scene-node scene-manager mesh
 112                                 #:key
 113                                 (parent %null-pointer)
 114                                 (id -1)
 115                                 (minimal-polys-per-node 512)
 116                                 (also-add-if-mesh-pointer-zero #f))
 117   (ffi-scene:add-octree-scene-node
 118    scene-manager
 119    mesh
 120    parent
 121    id
 122    minimal-polys-per-node
 123    (bool->integer also-add-if-mesh-pointer-zero)))
 124
 125 (define (get-mesh scene-manager filename)
 126   (let ((mesh (ffi-scene:get-mesh scene-manager (string->pointer filename))))
 127     (if (null-pointer? mesh) #f mesh)))
 128
 129 (define (get-root-scene-node scene-manager)
 130   (ffi-scene:get-root-scene-node scene-manager))
 131
 132 (define (scene-draw-all scene-manager)
 133   (ffi-scene:draw-all scene-manager))
 134
 135 (define (set-material-flag! node flag newvalue)
 136   (let ((material-flag
 137          (match flag
 138                 ('wireframe ffi-video:EMF_WIREFRAME)
 139                 ('pointcloud ffi-video:EMF_POINTCLOUD)
 140                 ('gouraud-shading ffi-video:EMF_GOURAUD_SHADING)
 141                 ('lighting ffi-video:EMF_LIGHTING)
 142                 ('zbuffer ffi-video:EMF_ZBUFFER)
 143                 ('zwrite-enable ffi-video:EMF_ZWRITE_ENABLE)
 144                 ('back-face-culling ffi-video:EMF_BACK_FACE_CULLING)
 145                 ('front-face-culling ffi-video:EMF_FRONT_FACE_CULLING)
 146                 ('bilinear-filter ffi-video:EMF_BILINEAR_FILTER)
 147                 ('trilinear-filter ffi-video:EMF_TRILINEAR_FILTER)
 148                 ('anisotropic-filter ffi-video:EMF_ANISOTROPIC_FILTER)
 149                 ('fog-enable ffi-video:EMF_FOG_ENABLE)
 150                 ('normalize-normals ffi-video:EMF_NORMALIZE_NORMALS)
 151                 ('texture-wrap ffi-video:EMF_TEXTURE_WRAP)
 152                 ('anti-aliasing ffi-video:EMF_ANTI_ALIASING)
 153                 ('color-mask ffi-video:EMF_COLOR_MASK)
 154                 ('color-material ffi-video:EMF_COLOR_MATERIAL)
 155                 ('use-mip-maps ffi-video:EMF_USE_MIP_MAPS)
 156                 ('blend-operation ffi-video:EMF_BLEND_OPERATION)
 157                 ('polygon-offset ffi-video:EMF_POLYGON_OFFSET))))
 158     (ffi-scene:set-material-flag
 159      node
 160      material-flag
 161      (bool->integer newvalue))))
 162
 163 (define (set-material-texture! node texture-layer texture)
 164   (ffi-scene:set-material-texture node texture-layer texture))
 165
 166 (define (set-md2-animation! node anim)
 167   (let ((animation-type
 168          (match anim
 169                 ('stand ffi-scene:EMAT_STAND)
 170                 ('run ffi-scene:EMAT_RUN)
 171                 ('attack ffi-scene:EMAT_ATTACK)
 172                 ('pain-a ffi-scene:EMAT_PAIN_A)
 173                 ('pain-b ffi-scene:EMAT_PAIN_B)
 174                 ('pain-c ffi-scene:EMAT_PAIN_C)
 175                 ('jump ffi-scene:EMAT_JUMP)
 176                 ('flip ffi-scene:EMAT_FLIP)
 177                 ('salute ffi-scene:EMAT_SALUTE)
 178                 ('fallback ffi-scene:EMAT_FALLBACK)
 179                 ('wave ffi-scene:EMAT_WAVE)
 180                 ('point ffi-scene:EMAT_POINT)
 181                 ('crouch-stand ffi-scene:EMAT_CROUCH_STAND)
 182                 ('crouch-walk ffi-scene:EMAT_CROUCH_WALK)
 183                 ('crouch-attack ffi-scene:EMAT_CROUCH_ATTACK)
 184                 ('crouch-pain ffi-scene:EMAT_CROUCH_PAIN)
 185                 ('crouch-death ffi-scene:EMAT_CROUCH_DEATH)
 186                 ('death-fallback ffi-scene:EMAT_DEATH_FALLBACK)
 187                 ('death-fallforward ffi-scene:EMAT_DEATH_FALLFORWARD)
 188                 ('death-fallbackslow ffi-scene:EMAT_DEATH_FALLBACKSLOW)
 189                 ('boom ffi-scene:EMAT_BOOM)
 190                 ('count ffi-scene:EMAT_COUNT))))
 191     (ffi-scene:set-md2-animation
 192      node
 193      animation-type)))
 194
 195 (define (set-position! node newpos)
 196   (ffi-scene:set-position
 197    node
 198    (make-c-struct ffi-core:vector3df newpos)))