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Collision Check

 
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Corroder
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PostPosted: Fri Jul 12, 2019 4:44 am    Post subject: Collision Check Reply with quote
From this topic: https://forum.cheatengine.org/viewtopic.php?t=610317

Code:
function onCollision(obj1,obj2)
 obj1x = obj1.left
 obj1y = obj1.top
 obj1w = obj1.width
 obj1h = obj1.height
 obj2x = obj2.left
 obj2y = obj2.top
 obj2w = obj2.width
 obj2h = obj2.height
 if obj2x + obj2w >= obj1x and obj2y + obj2h >= obj1y and obj2y <= obj1y + obj1h and obj2x <= obj1x + obj1w then
 return true
 end
end

if onCollision(obj1, obj2) then
 obj2.destroy()
end



The collision check function return error if one or both objects are destroyed. So, I did modification:

Code:
function onCollision(obj1,obj2)
 if obj1 == nil or obj2 == nil then obj1 = nil obj2 = nil end
 obj1x = obj1.left
 obj1y = obj1.top
 obj1w = obj1.width
 obj1h = obj1.height
 obj2x = obj2.left
 obj2y = obj2.top
 obj2w = obj2.width
 obj2h = obj2.height
 if obj2x + obj2w >= obj1x and obj2y + obj2h >= obj1y and obj2y <= obj1y + obj1h and obj2x <= obj1x + obj1w then
 return true
 end
end


Now I want to test colliding with objects created using array table.

Code:
local bricks = {}
local isBricksEnabled = {}
local brickWidth = 70
local brickHeight = 25
local brickRows  = 8
local brickColumns  = 8
local width, height = 70, 25
local gap = 5

form = createForm()
form.setSize(640.480)

--- create object panels as bricks
 for row = 1, brickRows do
   bricks[row] = {}
    for col = 1, brickColumns do
     local x = (col - 1) * (width + gap) -- x offset
     local y = (row - 1) * (height + gap) -- y offset
     local newBrick = createPanel(form)
     newBrick.width = brickWidth
     newBrick.height = brickHeight
     newBrick.top = y + 15
     newBrick.left = x + 15
     newBrick.BorderStyle = 'bsNone'
     bricks[row][col] = newBrick
    end
 end


let say I have created a game ball as 'gameBall'. I did make the game ball bouncing, etc.
My question, how to check and destroy the bricks when the ball hits it?.

So far this is the script but didn't work, the bricks didn't detect by the ball.

Code:
-- Check for bricks colliding
      for rows = 1, brickRows do
        for columns = 0, brickColumns do
           if not isBrickEnabled[rows][columns] then repeat
            if onCollision(gameBall,bricks[rows][columns]) then
               isBrickEnabled[rows][columns] = false
              if gameBall.Left + 10 < bricks[rows][columns].Left or
                       gameBall.Left > bricks[rows][columns].Left + bricks[rows][columns].Width then
                        xVel = -xVel
                    else
                        yVel = -yVel
                    end
                end
            end
        end
     end

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AylinCE
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PostPosted: Fri Jul 12, 2019 7:39 am    Post subject: Reply with quote
If you're not offended me: I will ask a correction.
Regarding the following topic.
Can you code the jump logic for all the panels?
The code you share is valid only for "Form" limits,
If you apply the same code to all Panels, the solution will work.

https://forum.cheatengine.org/viewtopic.php?t=610429

I have no idea for the problem.
However, 64 panels one by one, it will not be difficult to encode. Smile
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Corroder
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PostPosted: Fri Jul 12, 2019 9:31 am    Post subject: Reply with quote
Aylin wrote:
..I will ask a correction.
....
Can you code the jump logic for all the panels?
The code you share is valid only for "Form" limits,
If you apply the same code to all Panels, the solution will work.

https://forum.cheatengine.org/viewtopic.php?t=610429

I have no idea for the problem.
However, 64 panels one by one, it will not be difficult to encode. Smile


1. ...I will ask the correction.
Did you mean, you will correcting my script and give solutions?.

2. ...the jump logic for all the panels?
Did you mean to make all panel 'Jump"

3. ...However, 64 panels one by one, it will not be difficult to encode.
I have made 100 panels on the form with a "normal" way (just use createPanel(form), etc...etc 100 times) and all work properly.
But, I don't want this way and that is why I post a topic with the title "Collision Check" With objects created and stores on an array table.

EDITED
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Last edited by Corroder on Fri Jul 12, 2019 7:16 pm; edited 2 times in total
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AylinCE
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PostPosted: Fri Jul 12, 2019 12:49 pm    Post subject: Reply with quote
Yes, I understand, I'm making an absolute translation error.
The following is the code that you created: valid for "form".
Is it possible to edit this code for all "Panels"?

Code:
local objWidth
local objHeight=50
local objX,objY,volX,volY

function bounced()
 volX=math.random(1,4)
 volY=math.random(1,4)
 objX=lbbounce.Left
 objY=lbbounce.Top
 objWidth=lbbounce.Width
 objX=math.random(0,frm.Width-objWidth)
 objX=math.random(0,frm.Height-objHeight)
 frm.DoubleBuffer=true
 timer1.Enabled=true
end

function timer1_Tick(sender)
 lbbounce.Left=objX
 lbbounce.Top=objY
 objX=objX+volX
 if (objX<0) then
 volX=-volX
 lbbounce.Font.Color=math.random(255,255)
 elseif (objX+objWidth>frm.Width) then
 volX=-volX
 lbbounce.Font.Color=math.random(0,255)
 end
 objY=objY+volY
 if (objY<0) then
 volY=-volY
 lbbounce.Font.Color=math.random(0,255)
 elseif (objY+objHeight>frm.Height) then
 volY=-volY
 lbbounce.Font.Color=math.random(0,255)
 end
end


The game you created with VB: I've tried later in CE.
He shoots the panels, but doesn't jump when the ball hits the panel.
It only bounces when the form hits the walls.

That's what I wanted to say.
Is it possible to apply the above code for all panels?

also, thanks for replying.
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Corroder
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PostPosted: Fri Jul 12, 2019 6:46 pm    Post subject: Reply with quote
First, please check in the Turkish language, which is different between "atlama" and "sıįrayan". So, I think you ask about "sıįrayan" not "atlama".

From my code you ask for, this is the explanation:

Code:
 -- check for left side form
 if (objX<0) then  volX=-volX end

 -- check for right side form
 if (objX+objWidth>frm.Width) then volX=-volX  end

 -- check for top side form
 if (objY<0) then volY=-volY end

 -- check for bottom side
if (objY+objHeight>frm.Height) then  volY=-volY end

-- check for Panel
-- do something




And for the I made using VB, this is a demo video about the same game created using CE.
In the game CE Version, I used a different script but with the same logic with the script you ask for.

Demo:
https://youtu.be/LFBOFV3Ge2Q
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AylinCE
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PostPosted: Fri Jul 12, 2019 7:23 pm    Post subject: Reply with quote
I do not want the code you already have.
It makes more sense that this remains private to you.
I just wanted to see if it was possible.
And I'm convinced. Thanks.
Inspired for similar topics.
Note: Many masters can not do this coding.
That makes you privileged.
Congratulations again. and thanks for your patience.
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Corroder
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PostPosted: Fri Jul 12, 2019 8:45 pm    Post subject: Re: Collision Check Reply with quote
Corroder wrote:
From this topic: https://forum.cheatengine.org/viewtopic.php?t=610317

Now I want to test colliding with objects created using array table.

Code:
local bricks = {}
local isBricksEnabled = {}
local brickWidth = 70
local brickHeight = 25
local brickRows  = 8
local brickColumns  = 8
local width, height = 70, 25
local gap = 5

form = createForm()
form.setSize(640.480)

--- create object panels as bricks
 for row = 1, brickRows do
   -- do something
 end


So far this is the script but didn't work, the bricks didn't detect by the ball.

Code:
-- Check for bricks colliding
      for rows = 1, brickRows do
        for columns = 0, brickColumns do
           if not isBrickEnabled[rows][columns] then repeat
            if onCollision(gameBall,bricks[rows][columns]) then
               isBrickEnabled[rows][columns] = false
              if gameBall.Left + 10 < bricks[rows][columns].Left or
                       gameBall.Left > bricks[rows][columns].Left + bricks[rows][columns].Width then
                        xVel = -xVel
                    else
                        yVel = -yVel
                    end
                end
            end
        end
     end


[SOLVED]

I just need to add a new table, let say is as 'brickArray = {}' and this table used to store all bricks has created before.
Then to check collision between the ball and brickArray[x]:

Code:
local numEnemies = #brickArray
       for x = 1, numEnemies do

        if onCollision(gameBall, brickArray[x]) then
         if gameBall.Left + 10 < brickArray[x].Left or gameBall.Left > brickArray[x].Left + brickArray[x].Width then
            xVel = -xVel else yVel = -yVel
         end
             -- code to remove the collided brick here
        end
       end


Now, the last thing is how to remove/destroy the collided bricks, so it does not return an error after removed.


Aylin wrote:
...
I just wanted to see if it was possible.


Yes, it is possible. I have proved it.



EDIT AND SOLVED

The full game has done. Using CE Lua. (See how, NOT JUST VB)

Demo: https://youtu.be/_E5NxseE15Y
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