irrlicht/scene.scm

   1 ;;; guile-irrlicht --- FFI bindings for Irrlicht Engine
   2 ;;; Copyright (C) 2020 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 (oop goops)
  23   #:use-module (ice-9 optargs)
  24   #:use-module (irrlicht base)
  25   #:use-module (irrlicht foreign)
  26   #:use-module (irrlicht io)
  27   #:use-module (irrlicht irr)
  28   #:use-module (irrlicht video))
  29
  30
  31 ;; IMesh
  32 (define-class <mesh> (<reference-counted>)
  33   (irr-class #:init-value "IMesh"))
  34
  35 (export <mesh>)
  36
  37
  38 ;; IAnimatedMesh
  39 (define-class <animated-mesh> (<mesh>)
  40   (irr-class #:init-value "IAnimatedMesh"))
  41
  42 (export <animated-mesh>)
  43
  44
  45 ;; ISceneNodeAnimator
  46 (define-class <scene-node-animator> (<attribute-exchanging-object> <event-receiver>)
  47   (irr-class #:init-value "ISceneNodeAnimator"))
  48
  49 (export <scene-node-animator>)
  50
  51
  52 ;; ISceneManager
  53 (define-class <scene-manager> (<reference-counted>)
  54   (irr-class #:init-value "ISceneManager"))
  55
  56 (define-method (add-animated-mesh-scene-node! (scene-manager <scene-manager>)
  57                                               (mesh <animated-mesh>)
  58                                               . rest)
  59   (let-keywords rest #f
  60         ((parent (make <scene-node>))
  61          (id -1)
  62          (position '(0 0 0))
  63          (rotation '(0 0 0))
  64          (scale '(1 1 1))
  65          (also-add-if-mesh-pointer-zero #f))
  66     (let* ((addAnimatedMeshSceneNode (get-irrlicht-proc "addAnimatedMeshSceneNode"
  67                                                         scene-manager
  68                                                         parent))
  69            (node-pointer (addAnimatedMeshSceneNode scene-manager mesh parent id position
  70                                                    rotation scale also-add-if-mesh-pointer-zero)))
  71       (cond ((null-pointer? node-pointer)
  72              (error "In procedure add-animated-mesh-scene-node!: Scene node cannot be created"))
  73             (else
  74              (make <animated-mesh-scene-node> #:irr-pointer node-pointer))))))
  75
  76 (define-method (add-camera-scene-node! (scene-manager <scene-manager>) . rest)
  77   (let-keywords rest #f
  78         ((parent (make <scene-node>))
  79          (position '(0 0 0))
  80          (lookat '(0 0 100))
  81          (id -1)
  82          (make-active #t))
  83     (make <camera-scene-node>
  84       #:irr-pointer
  85       ((get-irrlicht-proc "addCameraSceneNode" scene-manager parent)
  86        scene-manager
  87        parent
  88        position
  89        lookat
  90        id
  91        make-active))))
  92
  93 (define-method (add-camera-scene-node-fps! (scene-manager <scene-manager>) . rest)
  94   (let-keywords rest #f
  95         ((parent (make <scene-node>))
  96          (rotate-speed 100)
  97          (move-speed 0.5)
  98          (id -1)
  99          (key-map-array (make <key-map>))
 100          (key-map-size 0)
 101          (no-vertical-movement #f)
 102          (jump-speed 0)
 103          (invert-mouse #f)
 104          (make-active #t))
 105     (let ((addCameraSceneNodeFPS (get-irrlicht-proc "addCameraSceneNodeFPS"
 106                                                     scene-manager parent)))
 107       (make <camera-scene-node>
 108         #:irr-pointer
 109         (addCameraSceneNodeFPS scene-manager #:parent parent #:rotate-speed rotate-speed
 110                                #:move-speed move-speed #:id id #:key-map-array key-map-array
 111                                #:key-map-size key-map-size
 112                                #:no-vertical-movement no-vertical-movement
 113                                #:jump-speed jump-speed #:invert-mouse invert-mouse
 114                                #:make-active make-active)))))
 115
 116 (define-method (add-custom-scene-node! (scene-manager <scene-manager>) proc-render
 117                                        proc-get-bounding-box  proc-get-material-count
 118                                        proc-get-material . rest)
 119   (let-keywords rest #f
 120         ((parent (make <scene-node>))
 121          (id -1)
 122          (position '(0 0 0))
 123          (rotation '(0 0 0))
 124          (scale '(1 1 1)))
 125     (let ((addCustomSceneNode (get-irrlicht-proc "addCustomSceneNode" scene-manager parent)))
 126       (make <scene-node>
 127         #:irr-pointer
 128         (addCustomSceneNode scene-manager proc-render proc-get-bounding-box proc-get-material-count
 129                             proc-get-material parent id position rotation scale)))))
 130
 131 (define-method (add-octree-scene-node! (scene-manager <scene-manager>)
 132                                        (mesh <animated-mesh>)
 133                                        . rest)
 134   (let-keywords rest #f
 135         ((parent (make <scene-node>))
 136          (id -1)
 137          (minimal-polys-per-node 512)
 138          (also-add-if-mesh-pointer-zero #f))
 139     (let ((addOctreeSceneNode (get-irrlicht-proc "addOctreeSceneNode" scene-manager parent mesh)))
 140       (make <mesh-scene-node>
 141         #:irr-pointer
 142         (addOctreeSceneNode scene-manager mesh parent id minimal-polys-per-node
 143                             also-add-if-mesh-pointer-zero)))))
 144
 145 (define-method (add-octree-scene-node! (scene-manager <scene-manager>)
 146                                        (mesh <mesh>)
 147                                        . rest)
 148   (let-keywords rest #f
 149         ((parent (make <scene-node>))
 150          (id -1)
 151          (minimal-polys-per-node 256)
 152          (also-add-if-mesh-pointer-zero #f))
 153     (let ((addOctreeSceneNode (get-irrlicht-proc "addOctreeSceneNode" scene-manager parent mesh)))
 154       (make <mesh-scene-node>
 155         #:irr-pointer
 156         (addOctreeSceneNode scene-manager mesh parent id minimal-polys-per-node
 157                             also-add-if-mesh-pointer-zero)))))
 158
 159 (define-method (create-rotation-animator (scene-manager <scene-manager>) rotation-speed)
 160   (let ((createRotationAnimator (get-irrlicht-proc "createRotationAnimator" scene-manager)))
 161     (make <scene-node-animator>
 162       #:irr-pointer
 163       (createRotationAnimator scene-manager rotation-speed))))
 164
 165 (define-method (draw-all (scene-manager <scene-manager>))
 166   ((get-irrlicht-proc "drawAll" scene-manager)
 167    scene-manager))
 168
 169 (define-method (get-mesh (scene-manager <scene-manager>) filename)
 170   (let* ((getMesh (get-irrlicht-proc "getMesh" scene-manager))
 171          (mesh-pointer (getMesh scene-manager filename)))
 172     (cond ((null-pointer? mesh-pointer)
 173            (error "In procedure get-mesh: Mesh cannot be created"))
 174           (else
 175            (make <animated-mesh> #:irr-pointer mesh-pointer)))))
 176
 177 (define-method (get-root-scene-node (scene-manager <scene-manager>))
 178   (let ((getRootSceneNode (get-irrlicht-proc "getRootSceneNode" scene-manager)))
 179     (make <scene-node> #:irr-pointer (getRootSceneNode scene-manager))))
 180
 181 (export <scene-manager> add-animated-mesh-scene-node! add-camera-scene-node!
 182         add-camera-scene-node-fps! add-custom-scene-node! add-octree-scene-node!
 183         create-rotation-animator draw-all get-root-scene-node get-mesh)
 184
 185
 186 ;; ISceneNode
 187 (define-class <scene-node> (<attribute-exchanging-object>)
 188   (irr-class #:init-value "ISceneNode"))
 189
 190 (define-method (add-animator! (node <scene-node>) (animator <scene-node-animator>))
 191   (let ((addAnimator (get-irrlicht-proc "addAnimator" node)))
 192     (addAnimator node animator)))
 193
 194 (define-method (get-absolute-transformation (node <scene-node>))
 195   (let ((getAbsoluteTransformation (get-irrlicht-proc "getAbsoluteTransformation" node)))
 196     (getAbsoluteTransformation node)))
 197
 198 (define-method (set-material-flag! (node <scene-node>) flag new-value)
 199   ((get-irrlicht-proc "setMaterialFlag" node)
 200    node
 201    flag
 202    new-value))
 203
 204 (define-method (set-material-texture! (node <scene-node>) texture-layer (texture <texture>))
 205   ((get-irrlicht-proc "setMaterialTexture" node)
 206    node
 207    texture-layer
 208    texture))
 209
 210 (define-method (set-position! (node <scene-node>) new-pos)
 211   (let ((setPosition (get-irrlicht-proc "setPosition" node)))
 212     (setPosition node new-pos)))
 213
 214 (export <scene-node> add-animator! get-absolute-transformation set-material-flag!
 215         set-material-texture! set-position!)
 216
 217
 218 ;; IAnimatedMeshSceneNode
 219 (define-class <animated-mesh-scene-node> (<scene-node>)
 220   (irr-class #:init-value "IAnimatedMeshSceneNode"))
 221
 222 (define-method (set-md2-animation! (node <animated-mesh-scene-node>) anim)
 223   ((get-irrlicht-proc "setMD2Animation" node)
 224    node
 225    anim))
 226
 227 (export <animated-mesh-scene-node> set-md2-animation!)
 228
 229
 230 ;; ICameraSceneNode
 231 (define-class <camera-scene-node> (<scene-node>)
 232   (irr-class #:init-value "ICameraSceneNode"))
 233
 234 (export <camera-scene-node>)
 235
 236
 237 ;; IMeshSceneNode
 238 (define-class <mesh-scene-node> (<scene-node>)
 239   (irr-class #:init-value "IMeshSceneNode"))
 240
 241 (export <mesh-scene-node>)