164 lines
4 KiB
Lua
164 lines
4 KiB
Lua
-- box3D :: drawable box with shadow handling for fake3D actors
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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 Box3D = Object:extend()
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function Box3D:new(owner, w, h, d, isVisible)
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self.owner = owner
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self.world = owner.world
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self.cameras = self.world.cameras
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self.w = w
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self.h = h
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self.d = d
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self.haveLine = true
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self.shadowSources = {}
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self.needRedraw = false
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if (isVisible == nil) then
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self.isVisible = true
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else
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self.isVisible = isVisible
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end
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if (self.isVisible) then
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self:setTexture()
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end
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self.shadows = love.graphics.newCanvas(self.w, self.h)
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self:register()
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end
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function Box3D:register()
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self.owner.box = self
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self.world:registerTerrain(self.owner)
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end
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function Box3D:setSizeFromOwner()
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self:setSize(self.owner.w, self.owner.h, self.owner.d)
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end
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function Box3D:setSize(w, h, d)
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self.w = w
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self.h = h
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self.d = d
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self:regenerate()
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end
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function Box3D:setTexture()
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local canvas = love.graphics.newCanvas(self.w, self.h + self.d)
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love.graphics.setCanvas( canvas )
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utils.graphics.resetColor()
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self:drawTextureContent()
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love.graphics.setCanvas( )
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local imagedata = canvas:newImageData()
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self.texture = love.graphics.newImage( imagedata )
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imagedata:release()
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canvas:release()
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end
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function Box3D:drawTextureContent()
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self:drawTopTexture()
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self:drawBottomTexture()
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end
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function Box3D:drawTopTexture()
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utils.graphics.resetColor()
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love.graphics.rectangle("fill", 0, 0, self.w, self.h)
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end
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function Box3D:drawBottomTexture()
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love.graphics.setColor(0.9, 0.9, 0.9, 1)
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love.graphics.rectangle("fill", 0, self.h, self.w, self.d)
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end
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function Box3D:setShadowSource(actor, x, y)
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local foundShadow = false
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for i,v in ipairs(self.shadowSources) do
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if (v.actor == actor) then
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if (v.x ~= x) or (v.y ~= y) then
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v.x = x
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v.y = y
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self.needRedraw = true
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end
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foundShadow = true
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end
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end
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if (foundShadow == false) then
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local shadow = {}
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shadow.actor = actor
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shadow.x = x
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shadow.y = y
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self.needRedraw = true
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table.insert(self.shadowSources, shadow)
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end
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end
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function Box3D:removeShadowSource(actor)
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for i,v in ipairs(self.shadowSources) do
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if (v.actor == actor) then
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table.remove(self.shadowSources, i)
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self.needRedraw = true
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end
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end
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end
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function Box3D:redrawShadowCanvas()
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if (self.needRedraw) then
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love.graphics.setCanvas( self.shadows )
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love.graphics.clear()
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for i,v in ipairs(self.shadowSources) do
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v.actor:drawShadow(v.x, v.y)
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end
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love.graphics.setCanvas( )
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self.needRedraw = false
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end
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end
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function Box3D:draw(x, y, z)
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if (self.isVisible) then
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love.graphics.setColor(0, 0, 0, 1)
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if (self.haveLine) then
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love.graphics.rectangle("line", x, (y-z) - (self.d), self.w, self.d + self.h)
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end
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utils.graphics.resetColor()
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love.graphics.draw(self.texture, x, (y-z) - (self.d))
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end
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if (self.shadows ~= nil) and (#self.shadowSources > 0) then
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love.graphics.draw(self.shadows, x, (y-z) - (self.d))
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end
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end
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return Box3D
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