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, |
9 |
onNew = function (self) |
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10 |
self.thrust = Tile:new{image = 'data/thrust.png'}
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66
by Josh C
enemy thrust |
11 |
--the.app.view:add(self.thrust) |
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65
by Josh C
enemy is back |
12 |
end, |
13 |
onStartFrame = function (self) |
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14 |
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15 |
local pvec = vector.new(the.player.x - self.x, |
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16 |
the.player.y - self.y) |
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17 |
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67
by Josh C
rotate enemy ship slower |
18 |
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19 |
local pAngle = math.atan2(pvec.y, pvec.x) |
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20 |
local aDiff = self.rotation - pAngle |
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21 |
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22 |
while aDiff < (-math.pi) do |
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23 |
--print(aDiff .. ' < -π') |
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24 |
aDiff = aDiff + 2 * math.pi |
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25 |
end |
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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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29 |
end |
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30 |
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31 |
if math.abs(aDiff) > 0.1 then |
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32 |
-- rotation really shouldn't be negative. I |
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33 |
-- don't understand why that is. :\ |
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34 |
self.velocity.rotation = -2 * util.signOf(aDiff) |
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35 |
else |
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36 |
--print('not rotating')
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37 |
self.velocity.rotation = 0 |
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38 |
end |
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65
by Josh C
enemy is back |
39 |
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40 |
local pdist2 = pvec:len2() |
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41 |
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42 |
if pdist2 > 400^2 then -- ... if player dist > 64? |
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43 |
self.acceleration = vector.new(300, 0) |
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44 |
self.acceleration:rotate_inplace(self.rotation) |
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45 |
self.thrust.visible = true |
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46 |
else |
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47 |
self.acceleration = {x=0, y=0}
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48 |
self.thrust.visible = false |
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49 |
end |
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50 |
||
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67
by Josh C
rotate enemy ship slower |
51 |
if math.abs(aDiff) < 0.5 * math.pi and |
52 |
pdist2 < 400^2 and |
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65
by Josh C
enemy is back |
53 |
love.timer.getTime() - self.lastFired > 0.25 then |
54 |
--print('pew')
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55 |
b = Bullet:new{
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56 |
x = self.x + self.width / 2, |
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57 |
y = self.y + self.height / 2, |
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58 |
rotation = self.rotation |
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59 |
} |
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60 |
self.lastFired = love.timer.getTime() |
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61 |
end |
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62 |
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63 |
end, |
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7
by Josh C
enemy |
64 |
onUpdate = function(self) |
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65
by Josh C
enemy is back |
65 |
self.thrust.x = self.x - self.width |
66 |
self.thrust.y = self.y |
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67 |
self.thrust.rotation = self.rotation |
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68 |
end, |
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69 |
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7
by Josh C
enemy |
70 |
} |