bzr branch
http://9ix.org/bzr/traderous
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65
by Josh C
enemy is back |
1 |
-- player = 300 accel, 400 velLimit |
2 |
local accelLimit = 150 |
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3 |
local velLimit = 200 |
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7
by Josh C
enemy |
4 |
Enemy = Tile:extend {
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5 |
image = 'data/enemy.png', |
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6 |
maxVelocity = {x=velLimit,y=velLimit},
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7 |
minVelocity = {x=-velLimit, y=-velLimit},
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65
by Josh C
enemy is back |
8 |
lastFired = 0, |
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71
by Josh C
enemy "patrol path" (pick random destination) |
9 |
state = 'patrolling', |
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65
by Josh C
enemy is back |
10 |
onNew = function (self) |
11 |
self.thrust = Tile:new{image = 'data/thrust.png'}
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66
by Josh C
enemy thrust |
12 |
--the.app.view:add(self.thrust) |
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69
by Josh C
enemy shields and death |
13 |
self.shield = Shield:new{ship = self}
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71
by Josh C
enemy "patrol path" (pick random destination) |
14 |
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15 |
self:chooseTarget() |
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65
by Josh C
enemy is back |
16 |
end, |
17 |
onStartFrame = function (self) |
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18 |
||
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72
by Josh C
add enemy state switch |
19 |
local tvec = vector.new(self.target.x - self.x, |
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71
by Josh C
enemy "patrol path" (pick random destination) |
20 |
self.target.y - self.y) |
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65
by Josh C
enemy is back |
21 |
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67
by Josh C
rotate enemy ship slower |
22 |
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72
by Josh C
add enemy state switch |
23 |
local tAngle = math.atan2(tvec.y, tvec.x) |
24 |
local aDiff = self.rotation - tAngle |
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67
by Josh C
rotate enemy ship slower |
25 |
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26 |
while aDiff < (-math.pi) do |
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27 |
--print(aDiff .. ' < -π') |
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28 |
aDiff = aDiff + 2 * math.pi |
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end |
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30 |
while aDiff > math.pi do |
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--print(aDiff .. ' > π') |
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aDiff = aDiff - 2 * math.pi |
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end |
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35 |
if math.abs(aDiff) > 0.1 then |
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36 |
-- rotation really shouldn't be negative. I |
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-- don't understand why that is. :\ |
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38 |
self.velocity.rotation = -2 * util.signOf(aDiff) |
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else |
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--print('not rotating')
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self.velocity.rotation = 0 |
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end |
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65
by Josh C
enemy is back |
43 |
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72
by Josh C
add enemy state switch |
44 |
if self.state == 'combat' and not the.player.active then |
45 |
self.state = 'patrolling' |
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end |
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47 |
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48 |
local pdist2 = vector.new(the.player.x - self.x, |
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the.player.y - self.y):len2() |
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50 |
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51 |
if pdist2 < (the.app.width / 2)^2 then |
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52 |
-- if player is roughly on enemy's screen |
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53 |
if self.state == 'patrolling' and the.player.active then |
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self.state = 'combat' |
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self.target = the.player |
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end |
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57 |
elseif pdist2 > (2 * the.app.width)^2 then |
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if self.state == 'combat' then |
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self.state = 'patrolling' |
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self:chooseTarget() |
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end |
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end |
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63 |
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64 |
local tdist2 = tvec:len2() |
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65 |
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66 |
if tdist2 > 400^2 then |
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65
by Josh C
enemy is back |
67 |
self.acceleration = vector.new(300, 0) |
68 |
self.acceleration:rotate_inplace(self.rotation) |
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69 |
self.thrust.visible = true |
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else |
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self.acceleration = {x=0, y=0}
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self.thrust.visible = false |
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end |
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74 |
||
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72
by Josh C
add enemy state switch |
75 |
if tdist2 < 400^2 then |
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71
by Josh C
enemy "patrol path" (pick random destination) |
76 |
if self.state == 'patrolling' then |
77 |
self:chooseTarget() |
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78 |
elseif self.state == 'combat' then |
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79 |
if math.abs(aDiff) < 0.5 * math.pi and |
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80 |
love.timer.getTime() - self.lastFired > 0.25 then |
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--print('pew')
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b = Bullet:new{
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x = self.x + self.width / 2, |
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y = self.y + self.height / 2, |
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rotation = self.rotation, |
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source = self |
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} |
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self.lastFired = love.timer.getTime() |
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end |
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90 |
end |
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65
by Josh C
enemy is back |
91 |
end |
92 |
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93 |
end, |
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7
by Josh C
enemy |
94 |
onUpdate = function(self) |
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65
by Josh C
enemy is back |
95 |
self.thrust.x = self.x - self.width |
96 |
self.thrust.y = self.y |
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self.thrust.rotation = self.rotation |
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end, |
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69
by Josh C
enemy shields and death |
99 |
onCollide = function (self, other) |
100 |
if other:instanceOf(Bullet) and other.source ~= self then |
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101 |
if self.shield.strength == 0 then |
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102 |
-- die |
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103 |
the.app.view:add( Boom:new {
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x = self.x, |
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y = self.y, |
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106 |
velocity = { rotation = 5 }
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}) |
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108 |
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self:die() |
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110 |
self.thrust:die() |
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111 |
self.shield:die() |
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112 |
the.enemies:remove(self) |
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113 |
the.app.view:remove(self.thrust) |
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114 |
the.app.view:remove(self.shield) |
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else |
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116 |
self.shield:onHit() |
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end |
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118 |
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119 |
other:die() |
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120 |
the.bullets:remove(other) |
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121 |
end |
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71
by Josh C
enemy "patrol path" (pick random destination) |
122 |
end, |
123 |
chooseTarget = function (self) |
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124 |
self.target = {
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125 |
x = math.random(the.bg.width), |
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126 |
y = math.random(the.bg.height) |
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127 |
} |
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128 |
end |
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7
by Josh C
enemy |
129 |
} |