Generate EDM (but the code is bad)

pulsar.p8

@@ -17,11 +17,73 @@ __gfx__
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 00700700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
 __sfx__
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 __music__
-00 00404040
+00 08090a40
-00 01404040
+00 0b0c0d40
+00 40404040
+00 40404040
 

shared/performer.lua

@@ -8,6 +8,7 @@ function performer:init(track,channel,instrument,time,roots)
  self.time=time
  self.roots=roots
  self.selected_root=1
+ self.offset=0
 end
 
 function performer:root(root)
@@ -16,7 +17,7 @@ function performer:root(root)
 end
 function performer:play(duration,note,verbs)
  local base=self.roots[self.selected_root]
- local note=base+note
+ local note=base+note+self.offset
  local t0=self.time
  local t1=t0+duration
  self.time+=duration

unique.lua

@@ -1,7 +1,7 @@
 function _init()
  local bgm=build_bgm()
  local free_patterns={}
- for i=0,63 do add(free_patterns,i) end
+ for i=8,63 do add(free_patterns,i) end
 
  bgm:build(free_patterns,0)
 
@@ -18,60 +18,132 @@ end
 function build_bgm()
  local bgm=track:new()
 
+ bgm:add(32)
+ bgm:add(32)
  bgm:add(32)
  bgm:add(32)
 
- trumpet=instrument:new(play_trumpet)
+ local bassline=instrument:new(devil(0,2,5,5))
- local perf=performer:new(bgm,0,trumpet,0,{30})
+ local yowler=instrument:new(devil(1,2,5,3))
- perf:play(3,0)
+ local p0=performer:new(bgm,0,bassline,0,{12-2})
- perf:play(3,7)
+ local p1=performer:new(bgm,1,yowler,0,{24-2})
- perf:play(3,5,"warb")
- perf:play(1,3)
- perf:play(1,2)
- perf:play(1,0)
- perf:play(2,-2)
- perf:play(2,-4)
- perf:play(3,-5,"hold")
- perf:play(3,5,"hold")
- perf:play(4,4,"warb")
- perf:rest(1)
- perf:play(1,-2)
- perf:play(1,0)
- perf:play(1,2)
- perf:play(1,3)
- perf:play(1,5)
 
- perf:play(2,7)
+ function generators(r,a,b,c,d) 
- perf:play(2,5)
+  a+=r b+=r c+=r d+=r
- perf:play(2,12)
+  local oct=12
- perf:play(2,14)
+  if (b < a) oct=-12
- perf:play(2,15)
+  local e=a+oct
- perf:play(1,17)
+  local f=b+oct
- perf:play(1,15)
+  local g=c+oct
- perf:play(2,14)
+  local t={
- perf:play(2,12)
+   gen4=function()
- perf:play(2,10)
+    p0:play(1,a) p0:play(1,a+24,"slide") p0:play(1,d) p0:play(1,e)
- perf:play(1,12)
+    p1:play(1,a,"chop") p1:play(1,a,"chop") p1:play(1,d) p1:play(1,e)
- perf:play(1,10)
+   end,
- perf:play(2,8)
+
- perf:play(1,10)
+   gen3=function()
- perf:play(1,8)
+    p0:play(1,a) p0:play(1,a,"chop") p0:play(1,d) 
- perf:play(4,7)
+    p1:play(1,a,"chop") p1:play(1,a,"chop") p1:play(1,d) 
- perf:rest(4)
+   end,
+
+   gen2=function(off)
+    off = off or 0
+    p0:play(1,f+off) p0:play(1,g+off) 
+    p1:play(1,f+off,"chop") p1:play(1,g+off) 
+   end
+  }
+  t.gen16=function()
+   t.gen4() t.gen4() t.gen3() t.gen3() t.gen2()
+  end
+  t.gen12=function()
+   t.gen3() t.gen3() t.gen3() t.gen3() 
+  end
+  return t
+ end
+ p1.offset=-12
+ generators(0,0,3,5,10).gen16()
+ p1.offset=-5
+ generators(12,0,3,5,10).gen16()
+ generators(24,0,3,5,10).gen16()
+ p1.offset=4
+ generators(29,0,-2,-3,-7).gen12()
+ p1.offset=7
+ generators(29,0,-2,-3,-7).gen2()
+ p1.offset=-5
+ generators(29,0,-2,-3,-7).gen2()
+
+ local drums=instrument:new(drums)
+ local pd=performer:new(bgm,1,drums,0,{0})
+
+ for i=0,5 do
+  pd:play(1,0,"kick")
+  pd:rest(3)
+  pd:play(1,0,"snare")
+  pd:rest(3)
+ end
+ pd:play(1,0,"kick") pd:rest(1) pd:play(1,0,"kick") pd:rest(1) pd:play(1,0,"snare") pd:rest(1)
+ pd:play(1,0,"kick") pd:rest(1) pd:play(1,0,"kick") pd:rest(1) pd:play(1,0,"snare") pd:rest(1)
+ pd:play(1,0,"kick") pd:rest(1) pd:play(1,0,"kick") pd:rest(1)
+
+ local melo1=instrument:new(melo1)
+ local pm=performer:new(bgm,2,melo1,0,{48-2})
+
+ local function generate_ostinato(a,b,c,d,e,stophalf)
+  pm:play(1,a,"qq") pm:play(1,a,"qq") pm:play(1,a,"q") pm:play(1,a)
+  pm:play(1,a,"qq") pm:play(1,a,"qq") pm:play(1,a,"q") pm:play(1,a)
+  pm:play(1,a,"qq") pm:play(1,a,"qq") pm:play(1,a,"q") pm:play(1,a)
+  pm:play(1,a,"qq") pm:play(1,a,"qq") pm:play(1,e,"q") pm:play(1,e)
+  if (stophalf) return
+  pm:play(1,d,"qq") pm:play(1,d,"q") pm:play(1,d) pm:play(1,d)
+  pm:play(1,d,"q") pm:play(1,d,"q") pm:play(1,d) pm:play(1,d)
+  pm:play(1,c,"q") pm:play(1,c,"q") pm:play(1,c) pm:play(1,c)
+  pm:play(1,b) pm:play(1,b) pm:play(1,c) pm:play(1,b)
+ end
+
+ generate_ostinato(-5,-2,2,3,5)
+ generate_ostinato(-5,-2,2,3,5,true)
+ pm:rest(16)
 
  return bgm
 end
 
-function play_trumpet(duration,pitch,verbs)
+function devil(w,e,v0,v1)
- local e=0
+ return function(duration,pitch,verbs)
- if (verbs.slide) e=1
+  local out={}
- if (verbs.warb) e=2
+  for i=1,duration do
+   local v=v1
+   if (i == 1) v=v0
+   out[i]=nflags:new{p=pitch,v=v,c=1,w=w,e=e}
+  end
+  if (verbs.slide and #out>0) out[1].e=1
+  if (verbs.chop and #out>0) out[1].e=3
+  return out
+ end
+end
 
+function drums(duration,pitch,verbs)
+ if verbs.kick then 
+  return {
+   -- kind of a cool sidechained bass effect, but not useful here
+   -- nflags:new{p=10,v=7,c=1,w=0,e=0},
+   -- nflags:new{p=0,v=5,c=1,w=0,e=1}
+
+   nflags:new{p=19,v=7,c=1,w=2,e=0},
+   -- nflags:new{p=12,v=5,c=1,w=2,e=0}
+  }
+ end
+ if (verbs.snare) return {nflags:new{p=30,v=7,c=0,w=6,e=3}}
+
+ return {}
+end
+
+function melo1(duration,pitch,verbs)
+ local v=6
+ if (verbs.q) v=4
+ if (verbs.qq) v=2
  local out={}
  for i=1,duration do
-  out[i]=nflags:new{p=pitch,v=2,w=2,e=e}
+  out[i]=nflags:new{p=pitch,w=3,v=v,e=5}
  end
- if (not verbs.slide) out[1].e=4
- if (not verbs.hold and #out>1) out[#out].e=5
  return out
-end
+end