;;;; flight-sim.lisp (in-package #:flight-sim) ;;; "flight-sim" goes here. Hacks and glory await! ;(defmethod time-step ((object powered-object) time) ; (loop for engine in (loop for engine-sym in (getf (engines object) :active) collecting (getf (engines engines) engine-sym)) do ; (time-step engine object time))) ; ; (motion-step (motion *self*) time)) (defparameter *world* nil) (defparameter *self* nil) (defparameter *velocity* 2) ; 1 unit / second (defparameter *acceleration* 2) ; 1 unit /second (defparameter *controls-active* '()) (defparameter *start-time* (wall-time)) (defparameter *last-time* nil) (defparameter *num-frames* 0) (defun draw-world (start-time) ;; clear the buffer (gl:clear :color-buffer-bit :depth-buffer-bit) ;; move to eye position ;;draw (make-instance 'powered-object :motion (make-instance 'motion :coords (vector 0 0 -3)) :model *ship-model* :engine (engine *self*))) (let ((orig-coords (coords (body *self*)))) (setf (coords (body *self*)) (vector 0 0 -3)) (draw *self* start-time) (setf (coords (body *self*)) orig-coords)) (gl:translate (- (aref (coords (body *self*)) 0)) (- (aref (coords (body *self*)) 1)) (- (aref (coords (body *self*)) 2))) ;; eye (loop for entity across *world* do ; only draw if its infront of me (if (< (aref (coords (body entity)) 2) (+ 10 (aref (coords (body *self*)) 2))) (draw entity start-time))) (gl:matrix-mode :modelview) (gl:load-identity) (glu:look-at 0 6 10 ;; 0 6 10 pos 0 0 0 ;; center 0 1 0 ;; up in y pos ) ;; finish the frame (gl:flush) (sdl:update-display)) ;(defun phys-step (time) ; (time-step *self* time)) (defun thruster-on (key) (case key ((:sdl-key-w) ; + z (activate-attachment *self* :thruster (wall-time))) ; (progn ;(setf (aref (acceleration (motion *self*)) 2) (- *acceleration*)) ;(engine-start (engine *self*) (wall-time)))) ; (activate-engine *self* :thrust))) ((:sdl-key-s) ; - z (setf (aref (acceleration (motion *self*)) 2) *acceleration*)) ((:sdl-key-q) ; + x (setf (aref (acceleration (motion *self*)) 0) *acceleration*)) ((:sdl-key-a) ; - x (setf (aref (acceleration (motion *self*)) 0) (- *acceleration*))) ((:sdl-key-e) ; + y (setf (aref (acceleration (motion *self*)) 1) *acceleration*)) ((:sdl-key-d) ; - y (setf (aref (acceleration (motion *self*)) 1) (- *acceleration*))) (otherwise (format t "~a~%" key)))) (defun thruster-off (key) (case key ((:sdl-key-w) ; + z (deactivate-attachment *self* :thruster)) ; (progn ; (setf (aref (acceleration (motion *self*)) 2) 0) ; (engine-stop (engine *self*)))) ((:sdl-key-s) ; - z (setf (aref (acceleration (motion *self*)) 2) 0)) ((:sdl-key-q) ; + q (setf (aref (acceleration (motion *self*)) 0) 0)) ((:sdl-key-a) ; - a (setf (aref (acceleration (motion *self*)) 0) 0)) ((:sdl-key-e) ; + e (setf (aref (acceleration (motion *self*)) 1) 0)) ((:sdl-key-d) ; - d (setf (aref (acceleration (motion *self*)) 1) 0)) (otherwise (format t "~a~%" key)))) (defun phys-step (time) (let ((accel (vector 0 0 0))) (loop for sym in (active-attachments *self*) do (setf accel (vector+ accel (get-accel (getf (attachments *self*) sym) *self*)))) (apply-accel *self* accel time))) (defun sim-step () "draw a frame" (let* ((start-time (wall-time)) (time (- start-time *last-time*))) (phys-step time) (draw-world start-time) (incf *num-frames*) ; (if (not (eql (floor *last-time*) (floor time))) ; (let* ((short-interval time) ; (long-interval (- start-time *start-time*) ) ; (short-fps (floor (if (zerop short-interval) 0 (/ 1 short-interval)))) ; (long-fps (floor (if (zerop long-interval) 0 (/ *num-frames* long-interval))))) ; (format t "FPS since last:~a since start:~a (~a frames in ~a seconds)~%" short-fps long-fps *num-frames* long-interval))) (setf *last-time* start-time))) (defun reshape () (gl:shade-model :smooth) (gl:clear-color 0 0 0 0) (gl:clear-depth 1) (gl:enable :depth-test) (gl:depth-func :lequal) (gl:enable :cull-face) (gl:hint :perspective-correction-hint :nicest) (gl:matrix-mode :projection) (gl:load-identity) (glu:perspective 50; 45 ;; FOV 1.0 ;; aspect ratio(/ width (max height 1)) 1/10 ;; z near 1000 ;; z far ) (gl:matrix-mode :modelview) ) (defun populate-world () (setf *world* (make-array 201 :initial-contents (loop for i from 0 to 200 collecting (let ((e (make-instance 'game-object :model (make-instance 'model :vertices (vertices *diamond-model*) :faces (faces *diamond-model*)) :body (make-instance 'body :coords (vector (- (random 75) 37) (- (random 75) 37) (- (random 400) )) :angles (vector (random 360) (random 360) (random 360)))))) (setf (colors (model e)) (make-2d-array 3 3 `((,(random 255) ,(random 255) ,(random 255)) (,(random 255) ,(random 255) ,(random 255)) (,(random 255) ,(random 255) ,(random 255))))) (setf (face-colors (model e)) (make-2d-array 8 3 '((0 1 1) (0 1 1) (0 1 1) (0 1 1) (1 2 1) (1 2 1) (1 2 1) (1 2 1)))) e))))) (defun init () (setf *start-time* (wall-time)) (setf *num-frames* 0) (setf *last-time* *start-time*) (setf *controls-active* '()) (setf *self* (make-instance 'game-object :body (make-instance 'body :coords (vector 0 0 11) :mass 1000) :model *ship-model* :attachments (list :thruster (make-instance 'engine-object :activation-time 2 :model (make-instance 'engine-model :template-vertices *thruster-vertices* :template-colors *thruster-colors* :faces (make-2d-array 4 3 '((0 1 3) (0 2 1) (0 3 2) (1 2 3))) :face-colors (make-2d-array 4 3 '((0 1 3) (0 2 1) (0 3 2) (1 2 3)))) :force (make-instance 'force :newtons 10000 :direction (vector 0 0 1)) :body (make-instance 'body :coords (vector 0 0 1.5))) ; yaw (starboard (right) positive) ; :pos-yaw ; (make-instance 'engine-object ; :activation-time 2 ; :model (make-instance 'engine-model ; :template-vertices *jet-vertices* ; :template-colors *thruster-colors* ; :faces (make-2d-array 4 3 '((0 1 3) (0 2 1) (0 3 2) (1 2 3))) ; :face-colors (make-2d-array 4 3 '((0 1 3) (0 2 1) (0 3 2) (1 2 3)))) ; :body (make-instance 'body ; :coords (vector ))) ;:engines (list :engines (list :thrust ; (make-instance 'engine-object ; :motion (make-instance 'motion :coords (vector 0 0.5 3.0)) ; :forces (list (make-instance 'force :newtons 10 :direction '(0 0 1)))))))) (populate-world)) (defun main-loop () (init) (sdl:with-init () (sdl:window 640 480 :flags sdl:sdl-opengl) ;; cl-opengl needs platform specific support to be able to load GL ;; extensions, so we need to tell it how to do so in lispbuilder-sdl (reshape) (setf cl-opengl-bindings:*gl-get-proc-address* #'sdl-cffi::sdl-gl-get-proc-address) (sdl:with-events () (:quit-event () t) (:key-down-event (:key key) (thruster-on key)) ;(push key *controls-active*)) (:key-up-event (:key key) (thruster-off key)) ;(setf *controls-active* (remove key *controls-active*))) (:idle () ;; this lets slime keep working while the main loop is running ;; in sbcl using the :fd-handler swank:*communication-style* ;; (something similar might help in some other lisps, not sure which though) #+(and sbcl (not sb-thread)) (restartable (sb-sys:serve-all-events 0)) (restartable (sim-step)))))) ;(draw)))))