79 lines
2 KiB
Lua
79 lines
2 KiB
Lua
---@module 'obj/Area'
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---@class Area:Object
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---@field room Room
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---@field game_objects GameObject[]
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---@field world table|nil
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local Area = Object:extend()
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---Instantiates area
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function Area:new(room)
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self.room = room
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self.game_objects = {}
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self.world = nil
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self.timer = Timer()
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end
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---Updates area
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---@param dt number
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function Area:update(dt)
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for i = #self.game_objects, 1, -1 do
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local game_object = self.game_objects[i]
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game_object:update(dt)
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if game_object:isDead() then
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table.remove(self.game_objects, i)
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end
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end
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self.timer:update(dt)
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end
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---Draws area
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function Area:draw()
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for _, game_object in ipairs(self.game_objects) do game_object:draw() end
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end
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---Destroys area
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function Area:destroy()
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if self.timer then
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self.timer:clear() -- cancel all tweens/after/every
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self.timer = nil
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end
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for i = #self.game_objects, 1, -1 do
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local game_object = self.game_objects[i]
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game_object:kill()
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table.remove(self.game_objects, i)
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end
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self.game_objects = {}
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if self.world then self.world = nil end
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end
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---Adds game object to area
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---@param game_object_type string name of game object's class
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---@param x number|nil horizontal position
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---@param y number|nil vertical position
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---@param opts table|nil additional arguments
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---@return GameObject
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function Area:addGameObject(game_object_type, x, y, opts)
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local game_object = _G[game_object_type](self, x or 0, y or 0, opts or {})
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table.insert(self.game_objects, game_object)
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return game_object
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end
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---Initializes HC collision manager as a world
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---@param cell_size number|nil
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function Area:addCollisionManager(cell_size)
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self.world = HC(cell_size or 100)
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end
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---Slows down gameplay
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---@param amount number percentage to which game will slow down
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---@param duration number duration in seconds of slow down
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function Area:slow(amount, duration)
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slow_amnt = amount
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self.timer:tween(duration, _G, {slow_amnt = 1}, 'in-out-cubic')
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end
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return Area
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