5
_ = require 'underscore'
6
--inspect = require 'inspect'
8
Player = Animation:extend {
7
9
image = 'data/player.png',
8
onUpdate = function (self)
12
if the.keys:pressed('left') then
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self.velocity.x = -200
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elseif the.keys:pressed('right') then
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stand = { frames = { 1 }, fps = 1 },
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walk = { frames = { 2, 3 }, fps = 5 },
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jump = { frames = { 4 }, fps = 1 }
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onNew = function (self)
19
self.maxVelocity.y = 400
21
doPhysics = function (self, dir, elapsed)
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local vel = self.velocity
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local acc = self.acceleration
24
local drag = self.drag
25
local minVel = self.minVelocity
26
local maxVel = self.maxVelocity
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-- check existence of properties
31
assert(vel, 'active sprite has no velocity property')
32
assert(acc, 'active sprite has no acceleration property')
33
assert(drag, 'active sprite has no drag property')
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assert(minVel, 'active sprite has no minVelocity property')
35
assert(maxVel, 'active sprite has no maxVelocity property')
36
assert(_.include({'x','y','rotation'}, dir), 'direction should be x, y, or rotation')
41
vel.rotation = vel.rotation or 0
45
if acc[dir] and acc[dir] ~= 0 then
46
vel[dir] = vel[dir] + acc[dir] * elapsed
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vel[dir] = vel[dir] - drag[dir] * elapsed
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if vel[dir] < 0 then vel[dir] = 0 end
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elseif vel[dir] < 0 then
53
vel[dir] = vel[dir] + drag[dir] * elapsed
54
if vel[dir] > 0 then vel[dir] = 0 end
59
if minVel[dir] and vel[dir] < minVel[dir] then vel[dir] = minVel[dir] end
60
if maxVel[dir] and vel[dir] > maxVel[dir] then vel[dir] = maxVel[dir] end
62
if vel[dir] ~= 0 then self[dir] = self[dir] + vel[dir] * elapsed end
64
onStartFrame = function (self)
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-- this is all in startframe so it happens before
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-- physics calc at beginning of update
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-- jumping/falling updates could go in EndFrame...
69
self.falling = self.velocity.y > 0
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if self.falling then self.jumping = false end
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--print(self.jumping, self.falling)
73
if not self.onGround then
78
self.acceleration.y = 800
80
if the.keys:pressed('left') then
81
self.velocity.x = -200
82
if self.onGround then self:play('walk') end
83
elseif the.keys:pressed('right') then
85
if self.onGround then self:play('walk') end
87
if self.onGround then self:play('stand') end
90
if the.keys:justPressed('up') and self.onGround then
91
self.velocity.y = -400
95
update = function (self, elapsed)
96
-- NOTE: this is an override, not a callback
98
self:doPhysics('x', elapsed)
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self.onGround = false -- right before Y collision callbacks
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self:doPhysics('y', elapsed)
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self:collide(the.view.map)
105
Animation.update(self, elapsed)
107
onCollide = function (self, other, xOverlap, yOverlap)
108
-- seriously, why does this even fire?
109
if other == the.view.map then return end
111
--print(string.format('col s{x=%i y=%i w=%i h=%i} %s', self.x, self.y, self.width, self.height, tostring(other)))
112
--print('vel.x:'..self.velocity.x.." vel.y:"..self.velocity.y)
114
-- assumption: any other collision is with a solid map tile
115
if yOverlap > xOverlap then
118
if self.velocity.x > 0 then
119
self.onWall = 'right'
120
elseif self.velocity.x < 0 then
125
elseif xOverlap > yOverlap then
126
-- check if we've moved since collisions were generated
127
local xov, yov = self:overlap(other.x, other.y,
128
other.width, other.height)
129
if xov ~= 0 and yov ~= 0 then
130
--print('y collision')
131
if self.velocity.y > 0 then
20
146
GameView = View:extend {
23
149
self.focus = the.player
24
150
self:clampTo(self.map)
27
onUpdate = function (self, dt)
28
self.map:subdisplace(the.player)
152
onUpdate = function (self)
154
--the.player:collide(self.map)
155
--self.map:collide(the.player)
32
159
the.app = App:new {
33
160
onRun = function (self)
34
161
self.view = GameView:new()
162
--print(inspect(_(the.app):keys()))
163
self.console:watch('onGround', 'the.player.onGround')
164
self.console:watch('onWall', 'the.player.onWall')
36
166
onUpdate = function (self, dt)
37
if the.keys:justPressed('escape') then
167
if the.keys:justPressed('escape') and
168
not self.console.visible then
b'\\ No newline at end of file'