30
shortestVector = function(from, to)
32
if from.x < the.app.width / 2 or
33
from.x > the.bg.width - the.app.width / 2 or
34
from.y < the.app.height / 2 or
35
from.y > the.bg.height - the.app.height / 2 then
36
error('"from" coordinate out of bounds: X='..from.x..' Y='..from.y)
39
if to.x < the.app.width / 2 or
40
to.x > the.bg.width - the.app.width / 2 or
41
to.y < the.app.height / 2 or
42
to.y > the.bg.height - the.app.height / 2 then
43
error('"to" coordinate out of bounds: X='..to.x..' Y='..to.y)
47
-- normalize grid to account for mirror zones
48
local fx = from.x - the.app.width / 2
49
local fy = from.y - the.app.height / 2
50
local tx = to.x - the.app.width / 2
51
local ty = to.y - the.app.height / 2
56
if math.abs(tx - fx) < math.abs(tx - fx - (the.bg.width - the.app.width)) then
57
-- straight path is shorter
60
short.x = tx - fx - (the.bg.width - the.app.width)
64
if math.abs(ty - fy) < math.abs(ty - fy - (the.bg.height - the.app.height)) then
65
-- straight path is shorter
68
short.y = ty - fy - (the.bg.height - the.app.height)
71
return vector.new(short.x, short.y)
75
33
GameView = View:extend {
85
43
the.interface = Group:new()
86
44
the.planets = Group:new()
87
45
the.indicators = Group:new()
46
the.enemies = Group:new()
90
49
image = 'data/stars3.png',
99
58
the.player = SpacePlayer:new{x=the.bg.width / 2, y=the.bg.height / 2}
100
59
self:add(the.player)
101
60
self:add(the.player.thrust)
103
--self:add(Enemy:new{x=400, y=300})
61
self:add(the.player.shield)
66
local e = Enemy:new{x = math.random(the.bg.width),
67
y = math.random(the.bg.height)}
68
--local e = Enemy:new{x=the.bg.width / 2, y=the.bg.height / 2}
70
self:add(e.thrust) -- why doesn't this work in Enemy.new?
105
74
self:add(the.bullets)
106
75
self:add(the.indicators)
107
76
self:add(the.interface)
109
for _ = 1, math.random(6) do
78
for _ = 1, math.random(3, 6) do
110
79
local planet = Planet:new{
111
80
x = math.random(the.app.width / 2,
112
81
the.bg.width - the.app.width / 2),
120
89
the.cursor = Cursor:new()
121
90
self:add(the.cursor)
93
y = the.app.height / 2,
94
width = the.app.width,
100
the.interface:add(the.over)
103
the.instructions = Text:new{
104
y = the.app.height / 2 + 32,
105
width = the.app.width,
108
text = "Press Enter to start a new game\nPress Q to quit",
111
the.interface:add(the.instructions)
123
113
love.mouse.setGrab(true)
124
114
love.mouse.setVisible(false)
125
115
love.mouse.setPosition(the.app.width / 2, the.app.height / 2)
129
119
onUpdate = function(self, dt)
130
120
the.bullets:collide(the.planets)
121
the.bullets:collide(the.player)
122
the.bullets:collide(the.enemies)
132
124
onEndFrame = function(self)
133
125
the.interface.translate.x = the.player.x - the.app.width / 2 + the.player.width / 2