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