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chicago.lisp
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chicago.lisp
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;;; chicago.lisp --- horde3d example
;;; _ _
;;; ___| |__ (_) ___ __ _ __ _ ___
;;; / __| '_ \| |/ __/ _` |/ _` |/ _ \
;;; | (__| | | | | (_| (_| | (_| | (_) |
;;; \___|_| |_|_|\___\__,_|\__, |\___/
;;; |___/
;;;
;;; Copyright (C) 2009 Ole Arndt <ole@sugarshark.com>
;;;
(in-package :horde3d-examples)
(defclass particle ()
((px :accessor px :initarg :px)
(pz :accessor pz :initarg :pz)
(dx :accessor dx :initarg :dx)
(dz :accessor dz :initarg :dz)
(fx :accessor fx :initarg :fx)
(fz :accessor fz :initarg :fz)
(ox :accessor ox :initarg :ox :initform 0.0)
(oz :accessor oz :initarg :oz :initform 0.0)
(node :accessor node :initarg :node :initform nil)
(anim-time :accessor anim-time :initarg :anim-time :initform 0.0)))
(defclass chicago-application (example-application)
((deferred-pipeline :accessor deferred-pipeline :initarg :deferred-pipeline)
(particles :accessor particles :initarg :particles
:initform (make-array 100 :element-type '(or particle null)))))
(defun chicago ()
(example-main-sdl
(make-instance 'chicago-application
:viewer-position (make-array 3 :element-type 'single-float
:initial-contents '(5.0 3.0 19.0))
:viewer-orientation (make-array 3 :element-type 'single-float
:initial-contents '(7.0 15.0 0.0))
:stat-mode 2
:content-path #p"/home/ole/src/graphics//Horde3D_SDK_1.0.0_Beta4/Horde3D/Binaries/Content/")
:width 800
:height 600
:caption "Chicago - Horde3D Sample"))
(defun choose-destination (particle)
(let ((ang (* 6.28 (/ (random 360.0) 360.0)))
(rad (random 20.0)))
(setf (dx particle) (* (sin ang) rad)
(dz particle) (* (cos ang) rad))))
(defmethod app-init ((app chicago-application))
;; Add resources
(let ((env-res (h3d:add-resource :scene-graph "models/platform/platform.scene.xml"))
(skybox-res (h3d:add-resource :scene-graph "models/skybox/skybox.scene.xml"))
(light-mat-res (h3d:add-resource :material "materials/light.material.xml"))
(deferred-pipeline (h3d:add-resource :pipeline "pipelines/deferred.pipeline.xml"))
(char-res (h3d:add-resource :scene-graph "models/man/man.scene.xml"))
(char-walk-res (h3d:add-resource :animation "animations/man.anim")))
;; Load resources
(h3d:load-resources-from-disk (namestring (content-path app)))
(setf (hdr-pipeline app) deferred-pipeline)
;; add camera
(setf (camera-node app)
(h3d:add-camera-node h3d:+root-node+ "Camera" deferred-pipeline))
(h3d:set-node-transform (h3d:add-nodes h3d:+root-node+ env-res)
0 0 0 0 0 0 0.23 0.23 0.23)
(h3d:set-node-transform (h3d:add-nodes h3d:+root-node+ skybox-res)
0 0 0 0 0 0 210 50 201)
;; Add light source
(let ((light (h3d:add-light-node h3d:+root-node+ "Light1" light-mat-res "LIGHTING" "SHADOWMAP")))
(h3d:set-node-transform light 0 20 50 -30 0 0 1 1 1)
(setf (h3d:node-parameter light :light-radius) 200
(h3d:node-parameter light :light-fov) 90
(h3d:node-parameter light :light-shadow-map-count) 3
(h3d:node-parameter light :light-shadow-split-lambda) 0.9
(h3d:node-parameter light :light-shadow-map-bias) 0.001
(h3d:node-parameter light :light-color :component 0) 0.9
(h3d:node-parameter light :light-color :component 1) 0.7
(h3d:node-parameter light :light-color :component 2) 0.75))
;; initialize particles
(dotimes (i (length (particles app)))
(let ((p (make-instance 'particle
:node (h3d:add-nodes h3d:+root-node+ char-res)
:px (* 10.0 (sin (* 6.28 (float (/ i 100.0)))))
:pz (* 10.0 (cos (* 6.28 (float (/ i 100.0))))))))
(h3d:setup-model-animation-stage (node p) 0 char-walk-res 0 "" nil)
(choose-destination p)
(h3d:set-node-transform (node p) (px p) 0.02 (pz p) 0 0 0 1 1 1)
(setf (aref (particles app) i) p))))
;; Mark end of frame
(h3d:finalize-frame))
(defmethod app-main-loop ((app chicago-application))
(unless (freeze? app)
(update-crowd app))
;; Set camera parameters
(with-accessors ((pos viewer-position)
(rot viewer-orientation)
(cam camera-node)
(font font-resource)
(panel panel-resource)) app
(h3d:set-node-transform cam (aref pos 0) (aref pos 1) (aref pos 2)
(aref rot 0) (aref rot 1) 0 1 1 1 )
(when (> (stat-mode app) 0)
(h3d:show-frame-statistics font panel (stat-mode app))
;; Display weight
(h3d:show-text (format nil "Pipeline: ~a"
(if (eql (h3d:node-parameter cam :camera-pipeline-resource)
(fwd-pipeline app))
"forward"
"deferred"))
0.03 0.24 0.026 1 1 1 font 5))
;; Show logo
(h3d:show-overlay 0.75 0.8 0 1 0.75 1 0 0
1 1 1 0 1 0.8 1 1
1 1 1 1 (logo-resource app) 7)
;; Render scene
(h3d:render cam)))
(defun update-crowd (app)
(let ((d1 0.25) (d2 2.0) (d3 4.5)
(f1 3.0) (f2 1.0) (f3 0.1))
(declare (type single-float d1 d2 d3 f1 f2 f3)
(optimize (speed 3)))
(loop :for p :across (particles app) :do
(let ((px (px p)) (pz (pz p))
(dx (dx p)) (dz (dz p))
(ox (ox p)) (oz (oz p))
(fx 0.0) (fz 0.0))
(declare (type single-float px pz dx dz ox oz fx fz))
;; reset force
(let ((dist (sqrt (+ (* (- dx px) (- dx px))
(* (- dz pz) (- dz pz))))))
(declare (type single-float dist))
(cond
((> dist 3.0)
;; destination not reached, walk towards destination
(incf fx (* 0.035 (/ (- dx px) dist)))
(incf fz (* 0.035 (/ (- dz pz) dist)))
(loop :for p2 :across (particles app)
:when (not (eq p p2)) :do
(let* ((p2x (px p2))
(p2z (pz p2))
(dist2 (sqrt (+ (* (- px p2x) (- px p2x))
(* (- pz p2z) (- pz p2z)))))
(strength (cond
((and (<= dist2 d3) (> dist2 d2))
(let* ((m (/ (- f3 0) (- d2 d3)))
(n (- 0 (* m d3))))
(+ (* m dist2) n)))
((and (<= dist2 d2) (> dist2 d1))
(let* ((m (/ (- f2 f3) (- d1 d2)))
(n (- f3 (* m d2))))
(+ (* m dist2) n)))
((<= dist2 d1)
(let* ((m (/ (- f1 f2) (- 0 d1)))
(n (- f2 (* m d1))))
(+ (* m dist2) n)))
(t
0.0))))
(declare (type single-float p2x p2z dist strength))
(incf fx (* strength (the single-float (/ (- px p2x) dist2))))
(incf fz (* strength (the single-float (/ (- pz p2z) dist2)))))))
(t
;; near destination, choose a new one
(choose-destination p)))
;; make force framerate independant
(setf fx (* fx (/ 30.0 (curr-fps app)))
fz (* fz (/ 30.0 (curr-fps app))))
;; set new position
(incf px fx)
(incf pz fz)
(setf (px p) px)
(setf (pz p) pz)
;; calculate orientation
(setf ox (the single-float (/ (+ ox fx) 2.0)))
(setf oz (the single-float (/ (+ oz fz) 2.0)))
;; update character position
(let ((ry (radtodeg (if (/= oz 0.0) (atan ox oz) 0.0))))
(declare (type single-float ry))
(setf (ox p) ox)
(setf (oz p) oz)
(h3d:set-node-transform (node p) px 0.02 pz 0 ry 0 1 1 1))
;; update character animation
(let ((vel (sqrt (+ (* fx fx) (* fz fz)))))
(declare (type single-float vel))
(incf (anim-time p) (* vel 35.0))
(h3d:set-model-animation-parameters (node p) 0 (anim-time p) 1.0)))))))
;;; chicago.lisp ends here