5
_ = require 'underscore'
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6
--inspect = require 'inspect'
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--_ = require 'underscore'
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8
Player = Animation:extend {
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9
image = 'data/player.png',
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18
self.velocity.y = 0
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self.maxVelocity.y = 400
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doPhysics = function (self, dir, elapsed)
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local vel = self.velocity
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local acc = self.acceleration
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local drag = self.drag
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local minVel = self.minVelocity
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local maxVel = self.maxVelocity
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-- check existence of properties
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assert(vel, 'active sprite has no velocity property')
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assert(acc, 'active sprite has no acceleration property')
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assert(drag, 'active sprite has no drag property')
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assert(minVel, 'active sprite has no minVelocity property')
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assert(maxVel, 'active sprite has no maxVelocity property')
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assert(_.include({'x','y','rotation'}, dir), 'direction should be x, y, or rotation')
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vel.rotation = vel.rotation or 0
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if acc[dir] and acc[dir] ~= 0 then
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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
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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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if minVel[dir] and vel[dir] < minVel[dir] then vel[dir] = minVel[dir] end
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if maxVel[dir] and vel[dir] > maxVel[dir] then vel[dir] = maxVel[dir] end
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if vel[dir] ~= 0 then self[dir] = self[dir] + vel[dir] * elapsed end
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64
onStartFrame = function (self)
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65
-- this is all in startframe so it happens before
23
66
-- physics calc at beginning of update
27
70
if self.falling then self.jumping = false end
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71
--print(self.jumping, self.falling)
30
if not self.onGround then
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if (not self.onGround) and (not self.onWall) then
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77
self.velocity.x = 0
35
78
self.acceleration.y = 800
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self.acceleration.y = 0
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if the.keys:pressed('up') then
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self.velocity.y = -200
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elseif the.keys:pressed('down') then
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95
if the.keys:pressed('left') then
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96
self.velocity.x = -200
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97
if self.onGround then self:play('walk') end
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if self.onWall == 'right' then self.onWall = false end
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if self.onWall == 'right' then self.onWall = false end
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100
elseif the.keys:pressed('right') then
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101
self.velocity.x = 200
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102
if self.onGround then self:play('walk') end
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if self.onWall == 'left' then self.onWall = false end
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105
if self.onGround then self:play('stand') end
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110
self.jumping = true
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onUpdate = function (self)
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-- needs to happen right before collision
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update = function (self, elapsed)
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-- NOTE: this is an override, not a callback
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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)
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Animation.update(self, elapsed)
56
125
onCollide = function (self, other, xOverlap, yOverlap)
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126
-- seriously, why does this even fire?
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127
if other == the.view.map then return end
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132
-- assumption: any other collision is with a solid map tile
64
133
if yOverlap > xOverlap then
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134
other:displace(self)
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if self.velocity.x > 0 then
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self.onWall = 'right'
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elseif self.velocity.x < 0 then
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143
elseif xOverlap > yOverlap then
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144
-- check if we've moved since collisions were generated
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145
local xov, yov = self:overlap(other.x, other.y,
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179
self.view = GameView:new()
103
180
--print(inspect(_(the.app):keys()))
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181
self.console:watch('onGround', 'the.player.onGround')
182
self.console:watch('onWall', 'the.player.onWall')
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184
onUpdate = function (self, dt)
107
185
if the.keys:justPressed('escape') and
108
186
not self.console.visible then
b'\\ No newline at end of file'