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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
local Entity = require("entity")
local Animation = require("animation")
local Player = {}
Player.__index = Player
setmetatable(Player, { __index = Entity })
local MOVE_SPEED = 70
local JUMP_FORCE = -200
local GROUND_LAYER = "ground"
function Player.new(world, spawnX, spawnY)
local w, h = 16, 16
local pw, ph = 8, 8 -- physics body size
local self = setmetatable(Entity:new(spawnX or 0, spawnY or 0, w, h, pw, ph), Player)
self.directionState = { 'side', 'up', 'down', 'side_up', 'side_down' }
self.directionIndex = 1
self.direction = self.directionState[self.directionIndex]
self.availableJumps = 0
self:enablePhysics(world, "dynamic")
self.animations = {
idle = Animation.new("assets/player/idle.png", 16, 16, 0.6),
running = Animation.new("assets/player/running.png", 16, 16, 1),
going_up = Animation.new("assets/player/going_up.png", 16, 16, 0.8),
going_down = Animation.new("assets/player/going_down.png", 16, 16, 0.5),
stop_running = Animation.new("assets/player/stop_running.png", 16, 16, 0.3),
ground_hit = Animation.new("assets/player/ground_hit.png", 16, 16, 0.3)
}
if love and love.filesystem and love.filesystem.getDirectoryItems then
local ok, items = pcall(love.filesystem.getDirectoryItems, "assets/player")
if ok and items then
for _, filename in ipairs(items) do
if filename:match("%.png$") then
local name = filename:gsub("%.png$", "")
if not self.animations[name] then
self.animations[name] = Animation.new("assets/player/" .. filename, 16, 16, 0.3)
end
end
end
end
end
self.animations.ground_hit.looping = false
self.animations.stop_running.looping = false
self.currentAnim = self.animations.idle
self.lastFacing = 1
self.state = "idle"
self.wasOnFloor = false
self.vx = 0
self.vy = 0
self.grounded = false
return self
end
function Player:trackDirectionByKeyPressed()
local left = love.keyboard.isDown("left", "a")
local right = love.keyboard.isDown("right", "d")
local up = love.keyboard.isDown("up", "w")
local down = love.keyboard.isDown("down", "s")
if up and left then
self.directionIndex = 4
elseif up and right then
self.directionIndex = 4
elseif down and left then
self.directionIndex = 5
elseif down and right then
self.directionIndex = 5
elseif up then
self.directionIndex = 2
elseif down then
self.directionIndex = 3
elseif left then
self.directionIndex = 1
elseif right then
self.directionIndex = 1
end
self.direction = self.directionState[self.directionIndex]
end
function Player:update(dt)
self:syncFromPhysicsBody()
self:trackDirectionByKeyPressed()
local vx, vy = self.body:getLinearVelocity()
self.vx = vx
self.vy = vy
local c = self.contact or { floor = 0, wall = 0, ceiling = 0 }
local onFloor = c.floor == 1
local prevOnFloor = self.wasOnFloor
local prevState = self.state
local move = 0
if love.keyboard.isDown("left", "a") then move = move - 1 end
if love.keyboard.isDown("right", "d") then move = move + 1 end
if onFloor then
self.availableJumps = 1
if move ~= 0 then
self.lastFacing = move
self.body:setLinearVelocity(move * MOVE_SPEED, vy)
else
self.body:setLinearVelocity(0, vy)
end
else
if move ~= 0 then self.lastFacing = move end
self.body:setLinearVelocity(move * MOVE_SPEED * 0.7, vy)
end
local desiredState
if onFloor then
desiredState = (move ~= 0) and "running" or "idle"
else
desiredState = (vy < 0) and "jumping" or "falling"
end
if self.state == "ground_hit" or self.state == "stop_running" then
if not onFloor or self.currentAnim:isFinished() then
self.state = desiredState
end
else
local wasAirborne = prevState == "jumping" or prevState == "falling"
if onFloor and not prevOnFloor and wasAirborne then
self.state = "ground_hit"
self.animations.ground_hit:reset()
elseif onFloor and prevState == "running" and move == 0 then
self.state = "stop_running"
self.animations.stop_running:reset()
else
self.state = desiredState
end
end
self.wasOnFloor = onFloor
local animMap = {
idle = self.animations.idle,
running = self.animations.running,
jumping = self.animations.going_up,
falling = self.animations.going_down,
stop_running = self.animations.stop_running,
ground_hit = self.animations.ground_hit,
}
self.currentAnim = animMap[self.state] or self.animations.idle
self.currentAnim:update(dt)
end
function Player:jump()
local c = self.contact or { floor = 0, wall = 0, ceiling = 0 }
local canJump = (c.floor == 1 or c.wall == 1) and (self.availableJumps or 0) > 0
if canJump then
self.body:setLinearVelocity(self.body:getLinearVelocity(), JUMP_FORCE)
self.state = "jumping"
self.animations.going_up:reset()
self.availableJumps = self.availableJumps - 1
return true
end
return false
end
function Player:draw()
local flip = (self.lastFacing < 0)
self.currentAnim:draw(self.x, self.y, flip)
end
function Player:getBody()
return self.body
end
return Player
|
