weapons.lua

   1 local cabo = {-15,-15,-15,-15+10}
   2 local cabo2 = {-15+1,-15+1,-15+1,-15+10+1}
   3 local cano = {-15,-15+10,-45,-15+10}
   4 local cano2 = {-15+1,-15+10+1,-45+1,-15+10+1}
   5
   6 math.randomseed( os.time() )
   7
   8 function randomspread(spread)
   9         return math.random()*2*spread-spread
  10 end
  11
  12 shotgun = Weapon{
  13                         name = "Shotgun",
  14                         righthand = {-15,-15},
  15                         lefthand = {-30,-15+10},
  16                         tip = {-45,-15+10},
  17                         firerate = 1000,
  18                         sprite = {
  19                                         Line(cabo),
  20                                         Line(cabo2),
  21                                         Line(cano),
  22                                         Line(cano2)},
  23                         whenfire = function (x,y,angle,w)
  24                                                 for i = 1,5 do
  25                                                         Shot {
  26                                                                 x = x,
  27                                                                 y = y,
  28                                                                 angle = angle+randomspread(0.2),
  29                                                                 weapon = w,
  30                                                                 duration = 1000,
  31                                                                 speed = 4,
  32                                                                 sprite = {
  33                                                                                 Line{0,0,3,0},
  34                                                                                 Line{3,0,3,3},
  35                                                                                 Line{3,3,0,3},
  36                                                                                 Line{0,3,0,0},
  37                                                                                 }
  38                                                                 }
  39                                                 end
  40                                            end
  41 }
  42
  43 function addXY(x,y,...)
  44         local t = {...}
  45         for i = 1, #t do
  46                 t[i][1] = t[i][1] + x
  47                 t[i][2] = t[i][2] + y
  48                 t[i][3] = t[i][3] + x
  49                 t[i][4] = t[i][4] + y
  50         end
  51         return unpack(t)
  52 end
  53
  54 function mulXY(x,y,...)
  55         local t = {...}
  56         for i = 1, #t do
  57                 t[i][1] = t[i][1] * x
  58                 t[i][2] = t[i][2] * y
  59                 t[i][3] = t[i][3] * x
  60                 t[i][4] = t[i][4] * y
  61         end
  62         return unpack(t)
  63 end
  64
  65 local t = 0
  66 flamethrower = Weapon{
  67                         name = "Flamethrower",
  68                         righthand = {-20,-13},
  69                         lefthand = {-25,-10},
  70                         tip = {-65,-15+10},
  71                         firerate = 60,
  72                         sprite = {addXY(-10,0,
  73                                         Line{-20,-15,-20,-15+10},
  74                                         Line{-20,-15,-35,-15},
  75                                         Line{-35,-15,-35,-15+10},
  76                                         Line{-5,-15,-15,-15+10},
  77                                         Line{-5-8,-15+8,-5-8,-15},
  78                                         Line{-15,-15+10,-50,-15+10},
  79                                         Line{-40,-15+10,-50,-15},
  80                                         Line{-50,-15,-65,-15},
  81                                         Line{-65,-15,-65,-10},
  82                                         Line{-60,-15+6,-60,-15+13},
  83                                         Line{-50,-15+6,-60,-15+6},
  84                                         Line{-50,-15+13,-60,-15+13},
  85                                         Line{-50,-15+6,-50,-15+13}
  86                                         )
  87                                         },
  88                         whenfire = function (x,y,angle,w)
  89                                                 for i = 1,math.random(4) do
  90                                                         local flametip = math.random()*4
  91                                                         local flamesprite = {mulXY(3,4,
  92                                                                                         Line{flametip,0,0,2},
  93                                                                                         Line{0,2,0,3},
  94                                                                                         Line{0,3,1,4},
  95                                                                                         Line{1,4,3,4},
  96                                                                                         Line{3,4,4,3},
  97                                                                                         Line{4,3,4,2},
  98                                                                                         Line{4,2,flametip,0}
  99                                                                                         )}
 100                                                         t = t + 0.4
 101                                                         Shot {
 102                                                                 x = x,
 103                                                                 y = y,
 104                                                                 angle = angle+math.sin(t)*0.6+randomspread(0.4),
 105                                                                 weapon = w,
 106                                                                 speed = 3,
 107                                                                 duration = 500+math.random(500)-250,
 108                                                                 gravity = -0.04,
 109                                                                 sprite = flamesprite,
 110                                                                 }
 111                                                 end
 112                                            end
 113 }
 114