99 lines
2.4 KiB
Lua
99 lines
2.4 KiB
Lua
--Firework
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local gc=love.graphics
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local gc_clear=gc.clear
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local gc_setColor,gc_setLineWidth=gc.setColor,gc.setLineWidth
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local gc_line,gc_circle=gc.line,gc.circle
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local rnd=math.random
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local ins,rem=table.insert,table.remove
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local back={}
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local t
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local firework,particle
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function back.init()
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t=26
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firework,particle={},{}
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end
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function back.update(dt)
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t=t-1
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if t==0 then
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ins(firework,{
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x=nil,y=nil,
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x0=SCR.w*(rnd()*1.2-.1),
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y0=SCR.h*1.5,
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x1=SCR.w*(.15+rnd()*.7),
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y1=SCR.h*(.15+rnd()*.4),
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t=0,
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v=.5+rnd(),
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color=COLOR.random_dark(),
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big=rnd()<.1,
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})
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t=rnd(26,62)
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end
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for i=#firework,1,-1 do
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local F=firework[i]
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local time=F.t^.5
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if time>1 then
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local x,y,color=F.x,F.y,F.color
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if F.big then
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SFX.play('fall',.5)
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for _=1,rnd(62,126)do
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ins(particle,{
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x=x,y=y,
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color=color,
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vx=rnd()*16-8,
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vy=rnd()*16-8,
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t=1,
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})
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end
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else
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SFX.play('clear_1',.4)
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for _=1,rnd(16,26)do
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ins(particle,{
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x=x,y=y,
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color=color,
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vx=rnd()*8-4,
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vy=rnd()*8-4,
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t=1,
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})
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end
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end
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rem(firework,i)
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else
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F.t=F.t+dt*F.v
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F.x=F.x0*(1-time)+F.x1*time
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F.y=F.y0*(1-time)+F.y1*time
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end
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end
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for i=#particle,1,-1 do
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local P=particle[i]
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if P.t<0 then
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rem(particle,i)
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else
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P.x=P.x+P.vx
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P.y=P.y+P.vy
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P.vy=P.vy+.04
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P.t=P.t-dt*.6
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end
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end
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end
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function back.draw()
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gc_clear(.1,.1,.1)
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for i=1,#firework do
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local F=firework[i]
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gc_setColor(F.color)
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gc_circle('fill',F.x,F.y,F.big and 8 or 4)
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end
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gc_setLineWidth(3)
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for i=1,#particle do
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local P=particle[i]
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local c=P.color
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gc_setColor(c[1],c[2],c[3],P.t*.4)
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gc_line(P.x,P.y,P.x-P.vx*4,P.y-P.vy*4)
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end
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end
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function back.discard()
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firework=nil
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end
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return back
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