sonic-bluestreak/sonic-bluestreak.love/game/modules/drawing/parallaxBackground.lua

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local ParallaxBackground = Object:extend()
local maputils = require "scenes.battlesystem.utils"
function ParallaxBackground:new(scene, height, bottomBorder, type)
self.scene = scene
self.assets = self.scene.assets
self.datas = {}
self.datas.type = type or "forest"
self.height = height
self.bottomBorder = bottomBorder
local zones = require "datas.gamedata.maps.shoot.zones"
local datas = zones[self.datas.type]
self.datas.background = datas.background
self.datas.tiles = datas.tiles
self.datas.borders = datas.borders
self.assets:addTileset("normaltiles", "assets/backgrounds/normaltile")
self.assets:addTileset("borders", "assets/backgrounds/borders")
local backpath = "assets/backgrounds/parallax/" .. self.datas.background
self.assets:addImage("back1", backpath .. "-back.png")
self.assets:addImage("back2", backpath .. "-fore.png")
self.assets:addImage("cliff", backpath .. "-cliff.png")
self.texture = {}
self.texture.floor = self:generateFloor(datas.tiles)
end
-- GET FUNCTIONS
-- Get information from the map
function ParallaxBackground:getTotalHeight()
return self.height + self.bottomBorder;
end
function ParallaxBackground:getTerrain(x, y)
if (y <= self.height) then
return 0
else
return nil
end
end
function ParallaxBackground:isInGrid(x, y)
return ( self:getTerrain(x, y) ~= nil )
end
function ParallaxBackground:getStartY()
return 240 - (self:getTotalHeight() * 20) - 10
end
function ParallaxBackground:gridToPixel(x, y, center)
local pixelx, pixely
local center = center or false
local x, y = x, y
if (center) then
x = x + .5
y = y + .5
end
pixelx = maputils.CONST.STARTX + ((x-1) * 31) + ((y-1) * 10)
pixely = self:getStartY() + ((y-1) * 20)
return math.floor(pixelx), math.floor(pixely)
end
-- DRAW FUNCTIONS
-- Draw the battle map
function ParallaxBackground:generateFloor(tile)
local canvas = love.graphics.newCanvas(31*16, self:getTotalHeight() * 20)
local tile = tile or 1
love.graphics.setCanvas( canvas )
for i=1, self:getTotalHeight() do
for j=0, 18 do
local tiley = (i-1)*20
local tilex = (j-2)*31 + (i-1)*10
local variant = 1 + ((i + j) % 2)
local tiles = self.datas.tiles*2 + variant
if (not self:isInGrid(j, i)) then
love.graphics.setColor(.66, .66, .66, 1)
end
self.assets.tileset["normaltiles"]:drawTile(tiles, tilex, tiley)
utils.graphics.resetColor()
end
end
love.graphics.setCanvas( )
local imagedata = canvas:newImageData()
local texture = love.graphics.newImage( imagedata )
imagedata:release()
canvas:release()
return texture
end
function ParallaxBackground:draw()
self:drawParallax(-maputils.CONST.STARTX, -self:getStartY(), 424, 240)
end
function ParallaxBackground:drawParallax(x, y, w, h)
self:drawBackground(x, y, w, h)
self:drawForeground(x, y, w, h)
--love.graphics.draw(self.texture.floor, maputils.CONST.STARTX, self:getStartY())
local w2, _ = self.texture.floor:getDimensions()
for i=1, 2 do
local x2 = x % w2
love.graphics.draw(self.texture.floor, ((i-1)*31*16)-x2, -y)
end
self:drawBorders(x, y, w, h)
end
function ParallaxBackground:drawBackgrounds()
local w, _ = core.screen:getDimensions()
local w2, h2 = self.assets.images["back1"]:getDimensions()
local imax = math.ceil(w / w2) + 1
for i=1, imax do
self.assets.images["back1"]:draw((i-1)*w2, 0, 0, 1, 1)
end
local w2, h2 = self.assets.images["back2"]:getDimensions()
local imax = math.ceil(w / w2) + 1
for i=1, imax do
self.assets.images["back2"]:draw((i-1)*w2, self:getStartY()-h2, 0, 1, 1)
end
end
function ParallaxBackground:drawBackground(x, y, w, h)
local w2, h2 = self.assets.images["back1"]:getDimensions()
local imax = math.ceil(w / w2) + 1
for i=1, imax do
local x1 = (x / 5) % w2
self.assets.images["back1"]:draw((i-1)*w2 - x1, 0, 0, 1, 1, 0, 0)
end
end
function ParallaxBackground:drawForeground(x, y, w, h)
local w2, h2 = self.assets.images["back2"]:getDimensions()
local imax = math.ceil(w / w2) + 1
for i=1, imax do
local x1 = (x / 2) % w2
self.assets.images["back2"]:draw((i-1)*w2 - x1, -y-10, 0, 1, 1, 0, h2)
end
end
function ParallaxBackground:drawBorders(x, y)
local border = self.datas.borders + 1
for i=1, 7 do
local x2 = x % 80
self.assets.tileset["borders"]:drawTile(border, (i-1)*80 - x2, -y, 0, 1, 1, 0, 10)
self.assets.tileset["borders"]:drawTile(border, (i-1)*80 - x2, -(y-self:getTotalHeight()*20), 0, 1, 1)
end
end
return ParallaxBackground