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authorAki <nthirtyone@gmail.com>2017-03-16 19:05:50 +0100
committerAki <nthirtyone@gmail.com>2017-03-16 19:05:50 +0100
commit84278ed41f61c586dbb38dd99c45ee33e2f58c77 (patch)
treed7661f79901f40464b0b39a9bc5de6f4d5191b3b /not/Effect.lua
parentbd22a09dc862ac5480426bfd5e0311a97b6cfa77 (diff)
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Moved ? -> not.?; Renamed Player -> Hero
Diffstat (limited to 'not/Effect.lua')
-rw-r--r--not/Effect.lua68
1 files changed, 68 insertions, 0 deletions
diff --git a/not/Effect.lua b/not/Effect.lua
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+-- `Effect`
+-- Short animation with graphics that plays in various situation.
+
+-- Metatable of `Effect`
+-- nils initialized in constructor
+Effect = {
+ x = 0,
+ y = 0,
+ delay = 0.06,
+ initial = nil,
+ frame = 1,
+ animation = nil,
+ sprite = nil,
+ quads = require "effects"
+}
+
+-- Construct of `Effect`
+function Effect:new(name, x, y)
+ -- Meta
+ local o = {}
+ setmetatable(o, self)
+ self.__index = self
+ -- Load spritesheet to metatable if not yet loaded
+ if self.sprite == nil then
+ self.sprite = love.graphics.newImage("assets/effects.png")
+ end
+ -- Init
+ o.initial = o.delay
+ o.animation = name
+ o.x = x or self.x
+ o.y = y or self.y
+ return o
+end
+
+-- Position
+function Effect:getPosition()
+ return self.x, self.y
+end
+
+-- Animation and return flag for deletion after completion
+-- returns true if completed and ready to delete
+function Effect:update(dt)
+ self.delay = self.delay - dt
+ if self.delay < 0 then
+ if self.frame < self.quads[self.animation].frames then
+ self.frame = self.frame + 1
+ self.delay = self.delay + self.initial
+ else
+ return true -- delete
+ end
+ end
+ return false
+end
+
+-- Draw me with scale and offsets, senpai
+function Effect:draw(offset_x, offset_y, scale)
+ -- locals
+ local offset_x = offset_x or 0
+ local offset_y = offset_y or 0
+ local scale = scale or 1
+ local x, y = self:getPosition()
+ -- pixel grid
+ local draw_x = (math.floor(x) + offset_x) * scale
+ local draw_y = (math.floor(y) + offset_y) * scale
+ -- draw
+ love.graphics.setColor(255,255,255,255)
+ love.graphics.draw(self.sprite, self.quads[self.animation][self.frame], draw_x, draw_y, 0, scale, scale)
+end \ No newline at end of file