Talking about String Avoider game, Game development and iOS.
As you know, Stringy game was built starting from this prototype: Develop a Flash game like String Avoider – AS3 version – and more!.
Christian Wisniewski made a Corona version of the prototype to be played on mobile devices as you can see here:
With this main.lua file:
-- Declaring Variables
-- Stage Width and Height
local _W,_H = display.contentWidth,display.contentHeight
local tailLength = 5
local tailNodes = 200
local head = display.newCircle(_W/2,_H/2,10)
local nodes = {}
for i=1,tailNodes,1 do
nodes[i] = {}
nodes[i].x = head.x
nodes[i].y = head.y
end
-- Creating Display Groups
local tailGroup = display.newGroup()
local function startDrag(event)
-- Store the Target (the Head) in a variable
local t = event.target
if event.phase == "began" then
-- When the touch started, set the Focus on the Head
display.getCurrentStage():setFocus( t )
t.isFocus = true
-- Store initial Position of the Head
t.x0 = event.x - t.x
t.y0 = event.y - t.y
elseif t.isFocus then
if event.phase == "moved" then
-- While moving the head
-- remove every drawn line from the group
for i=tailGroup.numChildren,1,-1 do
tailGroup:remove(i)
end
-- Move the Head
t.x = event.x - t.x0
t.y = event.y - t.y0
-- Create starting line and insert it into the group
local line = display.newLine(head.x,head.y,nodes[1].x,nodes[1].y)
tailGroup:insert(line)
line.width = 20
nodes[1].x = head.x
nodes[1].y = head.y
-- Loop through every tailNode and save new positions in table
-- Note: LUA tables start with an index of 1 and not 0!
for i=2,tailNodes,1 do
local nodeAngle = math.atan2(nodes[i].y-nodes[i-1].y,nodes[i].x-nodes[i-1].x);
nodes[i].x = nodes[i-1].x+tailLength*math.cos(nodeAngle)
nodes[i].y = nodes[i-1].y+tailLength*math.sin(nodeAngle)
-- You could use
-- line:append(nodes[i].x,nodes[i].y)
-- but this wouldn't allow you to alter each segment (fading the color, reducing linewidth etc.)
-- Creating new line segments
local nLine = display.newLine(nodes[i-1].x,nodes[i-1].y,nodes[i].x,nodes[i].y)
-- c will store the colorvalue - starting from 255 and ending with 0 (white to black)
local c = 255-i/tailNodes*255
nLine:setColor(c)
-- width will start at 20 and fade out to 0
nLine.width = line.width-i/tailNodes*line.width
-- Important: insert the new Line segments into the table!
tailGroup:insert(nLine)
end
elseif event.phase == "ended" or event.phase == "cancelled" then
-- Remove the focus
display.getCurrentStage():setFocus( t, nil )
t.isFocus = false
end
end
end
-- Create touch Eventlistener
head:addEventListener("touch",startDrag)
During next days I will improve the prototype, maybe this could be a start for a mobile version of Stringy game.
Never miss an update! Subscribe, and I will bother you by email only when a new game or full source code comes out.