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Viewing changes to zoetrope/sprites/map.lua

Committer: Josh C
Date: 2013-08-24 03:54:55 UTC
Revision ID: josh@9ix.org-20130824035455-upi2mnssckafqxgs

map loading, super basic movement

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zoetrope/sprites/map.lua

-- nb. The tile at (0, 0) visually is stored in [1, 1].

map = {},

spriteBatches = {},

prevStartX = nil,

prevStartY = nil,

prevEndX = nil,

prevEndY = nil,

-- Method: empty

-- Creates an empty map.

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-- determine drawing bounds

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-- we draw to fill the entire app windoow

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--local startX, startY = self:pixelToMap(-x, -y)

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--local endX, endY = self:pixelToMap(the.app.width - x, the.app.height - y)

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local startX, startY = 1, 1

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local endX, endY = self:getMapSize()

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-- if using spritebatches, check if anything has changed

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-- TODO: encapsulate this check?

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if startX ~= self.prevStartX or

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startY ~= self.prevStartY or

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endX ~= self.prevEndX or

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endY ~= self.prevEndY then

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--print('building sprite batch')

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self.prevStartX, self.prevStartY = startX, startY

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self.prevEndX, self.prevEndY = endX, endY

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for k, batch in pairs(self.spriteBatches) do

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--batch:bind()

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batch:clear()

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end

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-- queue each sprite drawing operation

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local toDraw = {}

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for drawY = startY, endY do

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for drawX = startX, endX do

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local sprite = self.sprites[self.map[drawX][drawY]]

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if sprite and sprite.visible then

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if not toDraw[sprite] then

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toDraw[sprite] = {}

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end

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table.insert(toDraw[sprite], { (drawX - 1) * self.spriteWidth,

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(drawY - 1) * self.spriteHeight })

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local startX, startY = self:pixelToMap(-x, -y)

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local endX, endY = self:pixelToMap(the.app.width - x, the.app.height - y)

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-- queue each sprite drawing operation

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local toDraw = {}

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for drawY = startY, endY do

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for drawX = startX, endX do

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local sprite = self.sprites[self.map[drawX][drawY]]

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if sprite and sprite.visible then

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if not toDraw[sprite] then

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toDraw[sprite] = {}

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end

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end

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end

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-- draw each sprite in turn

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for sprite, list in pairs(toDraw) do

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for _, coords in pairs(list) do

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sprite:draw(coords[1], coords[2], self)

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table.insert(toDraw[sprite], { x + (drawX - 1) * self.spriteWidth,

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y + (drawY - 1) * self.spriteHeight })

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end

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end

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end

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for _, batch in pairs(self.spriteBatches) do

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--batch:unbind()

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love.graphics.draw(batch, x, y)

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-- draw each sprite in turn

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for sprite, list in pairs(toDraw) do

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for _, coords in pairs(list) do

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sprite:draw(coords[1], coords[2])

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end

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end

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end,

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