Building-Blox/player.lua at master · Crumpets-In-Space/Building-Blox · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
Player = {}

-- Constructor
function Player:new()
  -- define our parameters here
  local object = {
    value = 10,
    image = g.newImage("imgs/player.png"),
    x = g.getWidth()/2,
    y = g.getHeight()/2,
    width = 0,
    height = 0,
    health = 5
  }

  -- Physics
  object.body = love.physics.newBody(world, object.x,object.y, "dynamic")
  object.shape = love.physics.newCircleShape(25)
  object.fixture = love.physics.newFixture(object.body, object.shape):setUserData("Player")-- connect body to shape

  id = love.image.newImageData(32, 32)
    --1b. fill that blank image data
    for x = 0, 31 do
      for y = 0, 31 do
        local gradient = 1 - ((x-15)^2+(y-15)^2)/40
        id:setPixel(x, y, math.random(200,255), math.random(0,150), math.random(0,100), 255*(gradient<0 and 0 or gradient))
      end
    end
    --2. create an image from that image data
    i = love.graphics.newImage(id)

  object.p = love.graphics.newParticleSystem( i, 512 )
  object.p:setEmissionRate          (500)
  object.p:setLifetime              (4)
  object.p:setParticleLife          (1)
  object.p:setPosition              (0, 0)
  object.p:setDirection             (0)
  object.p:setSpread                (1)
  object.p:setSpeed                 (100, 0)
  object.p:setGravity               (30)
  object.p:setRadialAcceleration    (5)
  object.p:setTangentialAcceleration(0)
  object.p:setSizeVariation         (0.5)
  object.p:setRotation              (0)
  object.p:setSpin                  (0)
  object.p:setSpinVariation         (0)
  object.p:stop()

  -- SOUNDS
  rocket = love.audio.newSource("Sounds/rocket.wav","static")
  rocket:setPitch(0.5) -- one octave lower
  rocket:setVolume(0.7)

  setmetatable(object, { __index = Player })
  return object
end

-- Update function
function Player:update(dt)
  x, y = self.body:getLinearVelocity( )

  if self.shape:getRadius() < 50 then
    speed = 100
  elseif self.shape:getRadius() < 100 then
    speed = 200
  elseif self.shape:getRadius() < 150 then
    speed = 300
  end

  if love.keyboard.isDown("right") and x < 300 then
    self.body:applyForce(300, 0)
    love.audio.play(rocket)
    self.p:setDirection(math.pi)
    self.p:setSpeed(speed, 0)
    self.p:start()
  elseif love.keyboard.isDown("left") and x > -300 then
    self.body:applyForce(-300, 0)
    love.audio.play(rocket)
    self.p:setDirection(2*math.pi)
    self.p:setSpeed(speed, 0)
    self.p:start()
  end

  if love.keyboard.isDown("down") and y < 300 then
    self.body:applyForce(0, 300)
    love.audio.play(rocket)
    self.p:setDirection(3*math.pi/2)
    self.p:setSpeed(0, speed)
    self.p:start()
  elseif love.keyboard.isDown("up") and y > -300 then
    self.body:applyForce(0, -300)
    love.audio.play(rocket)
    self.p:setDirection(math.pi/2)
    self.p:setSpeed(0, speed)
    self.p:start()
  end

  if love.keyboard.isDown("left") and love.keyboard.isDown("up") then
    self.p:setDirection(math.pi/4)
    self.p:setSpeed(speed, speed)
    self.p:start()
  elseif love.keyboard.isDown("left") and love.keyboard.isDown("down") then
    self.p:setDirection(7*math.pi/4)
    self.p:setSpeed(speed, speed)
    self.p:start()
  elseif love.keyboard.isDown("right") and love.keyboard.isDown("up") then
    self.p:setDirection(3*math.pi/4)
    self.p:setSpeed(speed, speed)
    self.p:start()
  elseif love.keyboard.isDown("right") and love.keyboard.isDown("down") then
    self.p:setDirection(5*math.pi/4)
    self.p:setSpeed(speed, speed)
    self.p:start()
  end

  -- Get current velocity
  camera:move(x*dt,y*dt)

  -- Determine if player is dead
  if self.health <= 0 then
    gameover = true
  end

  --4b. on each frame, the particle system needs to update its particles's positions after dt miliseconds
  self.p:update(dt)
end

function Player:draw()
  love.graphics.draw(self.p, self.body:getX(), self.body:getY())
  --g.circle("line", self.body:getX(),self.body:getY(), self.shape:getRadius(), 20)
  scaleFactor = (self.shape:getRadius() * 2)/(self.image:getWidth())
  g.draw(self.image, self.body:getX(), self.body:getY(), self.body:getAngle(),  scaleFactor, scaleFactor, self.image:getWidth()/2, self.image:getHeight()/2)
end

function love.keyreleased(key)
  if love.keyboard.isDown("right") and love.keyboard.isDown("right") and love.keyboard.isDown("right") and love.keyboard.isDown("right") then
    return
  else
    love.audio.stop(rocket)
  end
end