98 lines
2.5 KiB
Lua
98 lines
2.5 KiB
Lua
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-- camera.lua :: a basic camera adapted to the asset/world system.
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-- Use hump.camera as the view backend.
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--[[
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Copyright © 2019 Kazhnuz
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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]]
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local cwd = (...):gsub('%.camera$', '') .. "."
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local CameraSystem = Object:extend()
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local View = require(cwd .. "libs.hump.camera")
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local SPLITSCREEN_ISVERTICAL = false
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-- INIT FUNCTIONS
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-- Initialize the camera system
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function CameraSystem:new(world)
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self.scene = world.scene
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self.world = world
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self.verticalSplit = SPLITSCREEN_ISVERTICAL
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self:initViews()
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end
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function CameraSystem:initViews()
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self.views = {}
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self.views.list = {}
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self.views.width, self.views.height = core.screen:getDimensions()
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end
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-- INFO FUNCTIONS
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-- Get informations from the camera system
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function CameraSystem:getViewNumber()
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return #self.views.list
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end
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function CameraSystem:haveView()
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return (self:getViewNumber() == 0)
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end
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-- WRAPPER and UTILS
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-- Access data from the views
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function CameraSystem:addView(x, y)
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local view = {}
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view.cam = View(x, y, 1, 0, true)
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-- TODO: add a target system in order to make a camera able
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-- to target a specific object
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table.insert(self.views.list, view)
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end
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function CameraSystem:getView(id)
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return self.views.list[id]
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end
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function CameraSystem:getViewCam(id)
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local view = self:getView(id)
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return view.cam
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end
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function CameraSystem:attachView(id)
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local cam = self:getViewCam(id)
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cam:attach()
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end
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function CameraSystem:detachView(id)
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local cam = self:getViewCam(id)
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cam:detach()
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end
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return CameraSystem
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