camera.lua

camera = {}
camera.x = 0
camera.y = 0
camera.scaleX = 1
camera.scaleY = 1
camera.rotation = 0
camera.rotationCenterX = 0
camera.rotationCenterY = 0

function camera:set()
    love.graphics.push()
    love.graphics.translate(-self.x, -self.y)
    love.graphics.translate(self.rotationCenterX, self.rotationCenterY)
    love.graphics.rotate(-self.rotation)
    love.graphics.translate(-self.rotationCenterX, -self.rotationCenterY)
    love.graphics.scale(1 / self.scaleX, 1 / self.scaleY)
    
end

function camera:unset()
  love.graphics.pop()
end

function camera:move(dx, dy)
  self.x = self.x + (dx or 0)
  self.y = self.y + (dy or 0)
end

function camera:rotate(dr)
  self.rotation = self.rotation + dr
end

function camera:setRotation(dr)
  self.rotation = dr or self.rotation
end

function camera:setRotationCenter(centerX, centerY)
    self.rotationCenterX = centerX or self.rotationCenterX
    self.rotationCenterY = centerY or self.rotationCenterY
end


function camera:scale(sx, sy)
  sx = sx or 1
  self.scaleX = self.scaleX * sx
  self.scaleY = self.scaleY * (sy or sx)
end

function camera:setPosition(x, y)
  self.x = x or self.x
  self.y = y or self.y
end

function camera:setScale(sx, sy)
  self.scaleX = sx or self.scaleX
  self.scaleY = sy or self.scaleY
end