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;;;; Copyright (C) 2018 Jakob L. Kreuze, All Rights Reserved.
;;;;
;;;; This file is part of slime-the-world.
;;;;
;;;; slime-the-world is free software: you can redistribute it and/or modify it
;;;; under the terms of the GNU General Public License as published by the Free
;;;; Software Foundation, either version 3 of the License, or (at your option)
;;;; any later version.
;;;;
;;;; slime-the-world is distributed in the hope that it will be useful, but
;;;; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
;;;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
;;;; more details.
;;;;
;;;; You should have received a copy of the GNU General Public License along
;;;; with slime-the-world. If not, see <http://www.gnu.org/licenses/>.
(local camera (require :camera))
(local player (require :player))
(local world (require :world))
(local logo (love.graphics.newImage "art/logo.png"))
(local menu-music (love.audio.newSource "music/nesulos.it" "stream"))
(: menu-music :setVolume 0.5)
(: menu-music :setLooping true)
(: menu-music :play)
(fn button-width [button]
(: (love.graphics.getFont) :getWidth (. button :text)))
(fn button-height [button]
(: (love.graphics.getFont) :getHeight))
(fn new-button [text offset function]
{:text text
:offset offset
:function function})
(fn draw-logo [screen-width screen-height]
(let [x (/ (- screen-width (: logo :getWidth)) 2)
y (/ (- screen-height (: logo :getHeight)) 8)]
(love.graphics.draw logo x y)))
(fn draw-button [button]
(let [text (. button :text)
offset (. button :offset)
width (button-width button)
height (button-height button)
x (/ (- screen-width width) 2)
y (+ (* height offset)
(/ (- screen-height height) 2))]
(love.graphics.print text x y)))
(fn play-clicked [set-mode]
(: menu-music :stop)
(set-mode :game))
(fn sound-clicked []
(love.audio.setVolume (if (= (love.audio.getVolume) 0) 1 0)))
(fn quit-clicked []
(love.event.quit))
(local buttons [(new-button "Play" 0 play-clicked)
(new-button "Toggle Sound" 1 sound-clicked)
(new-button "Quit" 2 quit-clicked)])
;; Demo world.
(local current-player (player.new))
(local current-world (world.new "demo" current-player))
(local current-camera (camera.new current-world screen-width screen-height))
(local demo-actions [:move-right 1 :stop-right 1 :move-left 1 :jump])
(var demo-action-index 1)
(var demo-action-timer 0)
(fn draw []
(let [camera-x (. current-camera :x-pos)
camera-y (. current-camera :y-pos)]
(: current-world :draw camera-x camera-y screen-width screen-height))
(draw-logo screen-width screen-height)
(each [_ button (ipairs buttons)]
(draw-button button)))
(fn update [dt]
(set demo-action-timer (- demo-action-timer dt))
(when (> 0 demo-action-timer)
(if (= "number" (type (. demo-actions demo-action-index)))
(set demo-action-timer (. demo-actions demo-action-index))
(: current-player (. demo-actions demo-action-index)))
(set demo-action-index (+ 1 demo-action-index))
(when (> demo-action-index (# demo-actions))
(set demo-action-index 1)))
(: current-world :update dt)
(: current-player :update dt)
(let [(camera-x camera-y) (: current-camera :focus-on-object current-player dt)]
(tset current-camera :x-pos camera-x)
(tset current-camera :y-pos camera-y)))
(fn keypressed [])
(fn keyreleased [])
(fn click [mouse-x mouse-y set-mode]
(each [_ button (ipairs buttons)]
(let [offset (. button :offset)
width (button-width button)
height (button-height button)
x (/ (- screen-width width) 2)
y (+ (* height offset)
(/ (- screen-height height) 2))]
(when (and (>= mouse-x x) (<= mouse-x (+ x width))
(>= mouse-y y) (<= mouse-y (+ y height)))
((. button :function) set-mode)))))
{:draw draw
:update update
:keypressed keypressed
:keyreleased keyreleased
:click click}
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