Базовый класс юнита, простейший юнит

game/main.lua

@@ -14,6 +14,8 @@ local mapX = 0
 local mapY = 0
 local mapSpeed = 32
 
+local someUnit
+
 local function drawText(str, x, y)
     local font = love.graphics.getFont()
     love.graphics.print(str, x - font:getWidth(str) / 2, y - font:getHeight() / 2)
@@ -48,6 +50,8 @@ function love.load()
     )
     tilemap:random(10, 10)
 
+    require "unit"
+    someUnit = SomeUnit:new(tilemap, 30, 30)
 end
 
 -- 0: nothing
@@ -117,13 +121,17 @@ function love.draw()
     -- tilemap.offsetX = 50 + math.floor(math.cos(time) * 25)
     -- tilemap.offsetY = 50 + math.floor(math.sin(time) * 25)
     tilemap:update()
-    local tilemapPosX = tilemap.offsetX
+    -- local tilemapPosX = tilemap.offsetX
-    local tilemapPosY = tilemap.offsetY
+    -- local tilemapPosY = tilemap.offsetY
+    local tilemapPosX = 10
+    local tilemapPosY = 10
     tilemap:draw(tilemapPosX, tilemapPosY)
     love.graphics.setColor(255, 0, 0)
     love.graphics.rectangle("line", tilemapPosX - 1, tilemapPosY - 1, 16 * 5 + 1, 16 * 5 + 1)
     love.graphics.setColor(255, 255, 255)
 
+    someUnit:draw()
+
     drawText('Hellorld!', 160, 100)
 
     if mouseState == 2 then

game/unit.lua

@@ -0,0 +1,50 @@
+BaseUnit = {}
+BaseUnit.__index = BaseUnit
+
+function BaseUnit:new(tilemap, x, y, size)
+    local this = {}
+    this.tilemap = tilemap
+    this.x = x
+    this.y = y
+    this.size = size or 16
+
+    this.sizeHalf = math.floor(this.size / 2) -- TODO: replace with Lua 5.3's integer thingies
+    return setmetatable(this, BaseUnit)
+end
+
+function BaseUnit:middlePoint()
+    return self.x + self.sizeHalf, self.y + self.sizeHalf
+end
+
+function BaseUnit:command(x, y, entity)
+    -- NOOP
+end
+
+function BaseUnit:draw()
+    -- NOOP
+end
+
+function BaseUnit:drawLimited(quad)
+    -- NOOP
+end
+
+function BaseUnit:__tostring()
+    return "BaseUnit(x=" .. self.x .. ", y=" .. self.y .. ")"
+end
+
+----------------------
+
+SomeUnit = setmetatable({}, { __index = BaseUnit })
+SomeUnit.__index = SomeUnit
+
+local unitTexture = love.graphics.newImage("res/unit.png")
+
+function SomeUnit:new(tilemap, x, y)
+    local this = BaseUnit:new(tilemap, x, y, 16)
+
+    return setmetatable(this, SomeUnit)
+end
+
+function SomeUnit:draw()
+    love.graphics.draw(unitTexture, self.x - self.tilemap.offsetX, self.y - self.tilemap.offsetY)
+end