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author | Aki <nthirtyone@gmail.com> | 2017-03-16 19:05:50 +0100 |
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committer | Aki <nthirtyone@gmail.com> | 2017-03-16 19:05:50 +0100 |
commit | 84278ed41f61c586dbb38dd99c45ee33e2f58c77 (patch) | |
tree | d7661f79901f40464b0b39a9bc5de6f4d5191b3b /not/Effect.lua | |
parent | bd22a09dc862ac5480426bfd5e0311a97b6cfa77 (diff) | |
download | roflnauts-84278ed41f61c586dbb38dd99c45ee33e2f58c77.zip roflnauts-84278ed41f61c586dbb38dd99c45ee33e2f58c77.tar.gz roflnauts-84278ed41f61c586dbb38dd99c45ee33e2f58c77.tar.bz2 |
Moved ? -> not.?; Renamed Player -> Hero
Diffstat (limited to 'not/Effect.lua')
-rw-r--r-- | not/Effect.lua | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/not/Effect.lua b/not/Effect.lua new file mode 100644 index 0000000..4e327a1 --- /dev/null +++ b/not/Effect.lua @@ -0,0 +1,68 @@ +-- `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
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