401 lines
14 KiB
Lua
401 lines
14 KiB
Lua
-- BaseDancer: single dancer that starts off-screen and bounces in, then loops
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local BaseDancer = {}
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BaseDancer.__index = BaseDancer
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function BaseDancer.new(name, index, bpm)
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local self = setmetatable({}, BaseDancer)
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self.name = name
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self.index = index
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self.bpm = bpm
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self.is_started = false
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local tex_info = tex.get_texture_info(self.name, tostring(self.index) .. "_loop")
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local frame_count = (tex_info and tex_info.frame_count) or 1
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self.keyframes = {}
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for i = 0, frame_count - 1 do
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table.insert(self.keyframes, i)
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end
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local duration = (60000 / bpm) / 2
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local total_duration = duration * #self.keyframes
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local textures = {}
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for i, frame_idx in ipairs(self.keyframes) do
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table.insert(textures, { duration * (i - 1), duration * i, frame_idx })
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end
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self.texture_change = anim.texture_change(total_duration, textures, { loop = true })
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self.texture_change:start()
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return self
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end
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function BaseDancer:start()
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self.is_started = true
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local screen_scale = tex.get_screen_scale()
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local duration = 60000 / self.bpm
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self.s_bounce_up = anim.move(duration / 2, {
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start_position = math.floor(-200 * screen_scale),
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total_distance = math.floor(350 * screen_scale),
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ease_out = "quadratic",
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delay = 500
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})
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self.s_bounce_down = anim.move(duration / 2, {
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total_distance = math.floor(140 * screen_scale),
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ease_in = "quadratic",
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delay = duration / 2 + 500
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})
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local start_info = tex.get_texture_info(self.name, tostring(self.index) .. "_start")
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local s_frame_count = (start_info and start_info.frame_count) or 1
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local s_keyframes = {}
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for i = 0, s_frame_count - 1 do
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table.insert(s_keyframes, i)
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end
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local start_textures = {}
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for i, frame_idx in ipairs(s_keyframes) do
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table.insert(start_textures, { (duration / #s_keyframes) * (i - 1), (duration / #s_keyframes) * i, frame_idx })
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end
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self.s_texture_change = anim.texture_change(duration, start_textures, { delay = 500 })
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self.s_texture_change:start()
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self.s_bounce_up:start()
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self.s_bounce_down:start()
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end
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function BaseDancer:update(current_time_ms, bpm)
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self.texture_change:update(current_time_ms)
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if self.is_started then
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self.s_texture_change:update(current_time_ms)
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self.s_bounce_up:update(current_time_ms)
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self.s_bounce_down:update(current_time_ms)
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end
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if bpm and bpm ~= self.bpm then
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self.bpm = bpm
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local duration = (60000 / bpm) / 2
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local total_duration = duration * #self.keyframes
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local textures = {}
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for i, frame_idx in ipairs(self.keyframes) do
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table.insert(textures, { duration * (i - 1), duration * i, frame_idx })
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end
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self.texture_change = anim.texture_change(total_duration, textures, { loop = true })
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self.texture_change:start()
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end
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end
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function BaseDancer:draw(x)
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if not self.is_started then return end
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local y = -self.s_bounce_up.attribute + self.s_bounce_down.attribute
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if not self.s_texture_change.is_finished then
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tex.draw_texture(self.name, tostring(self.index) .. "_start", {
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frame = self.s_texture_change.attribute, x = x, y = y
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})
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else
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tex.draw_texture(self.name, tostring(self.index) .. "_loop", {
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frame = self.texture_change.attribute, x = x
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})
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end
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end
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-- Dancer0_4: dancer 4 in group 0, has a bouncing object on top
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local Dancer0_4 = setmetatable({}, { __index = BaseDancer })
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Dancer0_4.__index = Dancer0_4
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function Dancer0_4.new(name, index, bpm)
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local self = setmetatable({}, Dancer0_4)
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local base = BaseDancer.new(name, index, bpm)
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for k, v in pairs(base) do self[k] = v end
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self.keyframes = {}
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for i = 0, 53 do
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table.insert(self.keyframes, i)
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end
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local duration = (60000 / bpm) / 2
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local total_duration = duration * #self.keyframes
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local textures = {}
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for i, frame_idx in ipairs(self.keyframes) do
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table.insert(textures, { duration * (i - 1), duration * i, frame_idx })
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end
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self.texture_change = anim.texture_change(total_duration, textures, { loop = true })
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self.texture_change:start()
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self.bounce_up = anim.move(duration, {
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total_distance = 20, ease_out = "quadratic", delay = duration * 2
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})
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self.bounce_down = anim.move(duration, {
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total_distance = 20, ease_in = "quadratic", delay = duration * 3
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})
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self.bounce_up:start()
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self.bounce_down:start()
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return self
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end
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function Dancer0_4:update(current_time_ms, bpm)
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BaseDancer.update(self, current_time_ms, bpm)
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self.bounce_up:update(current_time_ms)
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self.bounce_down:update(current_time_ms)
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if self.bounce_down.is_finished then
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self.bounce_up:restart()
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self.bounce_down:restart()
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end
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end
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function Dancer0_4:draw(x)
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if not self.is_started then return end
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local sy = -self.s_bounce_up.attribute + self.s_bounce_down.attribute
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local screen_scale = tex.get_screen_scale()
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if not self.s_texture_change.is_finished then
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tex.draw_texture(self.name, "4_start", {
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frame = 7, x = x, y = (-50 * screen_scale) + sy
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})
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tex.draw_texture(self.name, "4_start", {
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frame = self.s_texture_change.attribute, x = x, y = sy
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})
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else
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local attr = self.texture_change.attribute
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local by = -self.bounce_up.attribute + self.bounce_down.attribute
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if attr >= 0 and attr <= 3 then
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tex.draw_texture(self.name, "4_loop", { frame = 54, x = x, y = by })
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elseif attr >= 5 and attr <= 8 then
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tex.draw_texture(self.name, "4_loop", { frame = 56, x = x, y = by })
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elseif attr == 4 then
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tex.draw_texture(self.name, "4_loop", { frame = 55, x = x, y = by })
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end
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tex.draw_texture(self.name, "4_loop", { frame = attr, x = x })
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end
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end
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-- DancerPoof: dancer with a poof animation on spawn
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local DancerPoof = setmetatable({}, { __index = BaseDancer })
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DancerPoof.__index = DancerPoof
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function DancerPoof.new(name, index, bpm)
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local self = setmetatable({}, DancerPoof)
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local base = BaseDancer.new(name, index, bpm)
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for k, v in pairs(base) do self[k] = v end
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local duration = 60000 / bpm
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local poof_keyframes = {}
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for i = 0, 6 do
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table.insert(poof_keyframes, { (duration / 7) * i, (duration / 7) * (i + 1), i })
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end
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self.poof_texture_change = anim.texture_change(duration, poof_keyframes, { delay = 250 })
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self.poof_texture_change:start()
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return self
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end
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function DancerPoof:update(current_time_ms, bpm)
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BaseDancer.update(self, current_time_ms, bpm)
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self.poof_texture_change:update(current_time_ms)
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end
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function DancerPoof:draw(x)
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BaseDancer.draw(self, x)
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if not self.poof_texture_change.is_finished then
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tex.draw_texture(self.name, "poof", { x = x, frame = self.poof_texture_change.attribute })
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end
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end
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-- DancerPoof2: like DancerPoof but uses per-index poof texture
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local DancerPoof2 = setmetatable({}, { __index = DancerPoof })
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DancerPoof2.__index = DancerPoof2
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function DancerPoof2.new(name, index, bpm)
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local self = setmetatable({}, DancerPoof2)
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local base = DancerPoof.new(name, index, bpm)
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for k, v in pairs(base) do self[k] = v end
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return self
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end
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function DancerPoof2:draw(x)
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if not self.is_started then return end
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local sy = -self.s_bounce_up.attribute + self.s_bounce_down.attribute
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if not self.s_texture_change.is_finished then
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tex.draw_texture(self.name, tostring(self.index) .. "_start", {
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frame = self.s_texture_change.attribute, x = x, y = sy
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})
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else
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tex.draw_texture(self.name, tostring(self.index) .. "_loop", {
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frame = self.texture_change.attribute, x = x
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})
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end
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if not self.poof_texture_change.is_finished then
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tex.draw_texture(self.name, tostring(self.index) .. "_poof", {
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x = x, frame = self.poof_texture_change.attribute
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})
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end
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end
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-- BaseDancerGroup: manages a pool of dancers spread across the screen
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local BaseDancerGroup = {}
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BaseDancerGroup.__index = BaseDancerGroup
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local function get_variant_count(dancer_name)
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local keys = tex.get_texture_keys(dancer_name)
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if not keys then return 1 end
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local variants = {}
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for _, key in ipairs(keys) do
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local num = tonumber(key:match("^(%d+)"))
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if num then variants[num] = true end
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end
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local count = 0
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for _ in pairs(variants) do count = count + 1 end
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return math.max(1, count)
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end
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function BaseDancerGroup.new(index, bpm, max_dancers, path, dancer_class)
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local self = setmetatable({}, BaseDancerGroup)
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dancer_class = dancer_class or BaseDancer
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self.name = "dancer_" .. index
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self.active_count = 0
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self.path = path or "background"
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tex.load_folder(self.path, "dancer/" .. self.name)
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-- center(2), left(1), right(3), far-left(0), far-right(4) — 0-indexed
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self.spawn_positions = { 2, 1, 3, 0, 4 }
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self.active_dancers = {}
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self.max_dancers = max_dancers
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local variant_count = get_variant_count(self.name)
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self.dancers = {}
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for i = 1, max_dancers do
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local variant_idx = (i - 1) % variant_count
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table.insert(self.dancers, dancer_class.new(self.name, variant_idx, bpm))
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end
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-- Shuffle dancers
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for i = #self.dancers, 2, -1 do
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local j = math.random(1, i)
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self.dancers[i], self.dancers[j] = self.dancers[j], self.dancers[i]
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end
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self.needs_initial_dancer = true
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return self
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end
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function BaseDancerGroup:add_dancer()
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if self.active_count < #self.dancers and self.active_count < #self.spawn_positions then
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self.active_count = self.active_count + 1
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local position = self.spawn_positions[self.active_count] + 1 -- convert to 1-indexed
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local dancer = self.dancers[self.active_count]
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self.active_dancers[position] = dancer
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dancer:start()
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end
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end
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function BaseDancerGroup:remove_dancer()
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if self.active_count > 1 then
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local position = self.spawn_positions[self.active_count] + 1
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self.active_dancers[position] = nil
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self.active_count = self.active_count - 1
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end
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end
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function BaseDancerGroup:update(current_time_ms, bpm)
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if self.needs_initial_dancer then
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self.needs_initial_dancer = false
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self:add_dancer()
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end
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for _, dancer in ipairs(self.dancers) do
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dancer:update(current_time_ms, bpm)
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end
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end
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function BaseDancerGroup:draw()
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local screen_width = tex.get_screen_width()
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local num_dancers = self.max_dancers
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local first_dancer = nil
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for i = 1, num_dancers do
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local d = self.active_dancers[i]
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if d then
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first_dancer = d; break
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end
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end
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if not first_dancer then return end
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local info = tex.get_texture_info(self.name, tostring(first_dancer.index) .. "_loop")
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local dancer_width = info and info.width or 0
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local available_space = screen_width - (num_dancers * dancer_width)
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local spacing = available_space / (num_dancers + 1)
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for i = 1, num_dancers do
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local dancer = self.active_dancers[i]
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if dancer then
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local x_pos = math.floor(spacing + (i - 1) * (dancer_width + spacing))
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dancer:draw(x_pos)
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end
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end
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end
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function BaseDancerGroup:destroy()
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tex.unload_folder(self.path, "dancer/" .. self.name)
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end
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-- DancerGroup0: index 0 uses BaseDancers 0-3 + Dancer0_4 at position 4
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local DancerGroup0 = setmetatable({}, { __index = BaseDancerGroup })
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DancerGroup0.__index = DancerGroup0
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function DancerGroup0.new(index, bpm, max_dancers, path)
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local self = setmetatable({}, DancerGroup0)
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self.name = "dancer_" .. index
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self.active_count = 0
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self.path = path or "background"
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tex.load_folder(self.path, "dancer/" .. self.name)
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self.spawn_positions = { 2, 1, 3, 0, 4 }
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self.active_dancers = {}
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self.max_dancers = max_dancers
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self.dancers = {
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BaseDancer.new(self.name, 0, bpm),
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BaseDancer.new(self.name, 1, bpm),
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BaseDancer.new(self.name, 2, bpm),
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BaseDancer.new(self.name, 3, bpm),
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Dancer0_4.new(self.name, 4, bpm)
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}
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for i = #self.dancers, 2, -1 do
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local j = math.random(1, i)
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self.dancers[i], self.dancers[j] = self.dancers[j], self.dancers[i]
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end
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self.needs_initial_dancer = true
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return self
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end
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-- DancerGroupPoof1: uses DancerPoof
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local DancerGroupPoof1 = setmetatable({}, { __index = BaseDancerGroup })
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DancerGroupPoof1.__index = DancerGroupPoof1
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function DancerGroupPoof1.new(index, bpm, max_dancers, path)
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return BaseDancerGroup.new(index, bpm, max_dancers, path, DancerPoof)
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end
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-- DancerGroupPoof2: uses DancerPoof2
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local DancerGroupPoof2 = setmetatable({}, { __index = BaseDancerGroup })
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DancerGroupPoof2.__index = DancerGroupPoof2
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function DancerGroupPoof2.new(index, bpm, max_dancers, path)
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return BaseDancerGroup.new(index, bpm, max_dancers, path, DancerPoof2)
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end
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-- Factory: maps dancer index 0-20 to the appropriate group class
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local Dancer = {}
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Dancer.Base = BaseDancer
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Dancer.BaseDancerGroup = BaseDancerGroup
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function Dancer.create(index, bpm, path, max_dancers)
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max_dancers = max_dancers or 5
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local map = {
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DancerGroup0, DancerGroup0, DancerGroup0,
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BaseDancerGroup, BaseDancerGroup, BaseDancerGroup,
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BaseDancerGroup,
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DancerGroupPoof1, DancerGroupPoof1,
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BaseDancerGroup, BaseDancerGroup, BaseDancerGroup,
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DancerGroupPoof2, DancerGroupPoof2,
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BaseDancerGroup, BaseDancerGroup,
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DancerGroupPoof2,
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BaseDancerGroup, BaseDancerGroup, BaseDancerGroup, BaseDancerGroup
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}
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local cls = map[index + 1]
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return cls.new(index, bpm, max_dancers, path)
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end
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return Dancer
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