R0J0hound's Forum Posts

• • R0J0hound
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  • • Joined 15 Jun, 2009
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    • 90 topics • 7,289 posts
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  • 19 May, 2012
  • Quote

  Jayjay

  I split everything up into vertical slices: screen and textures. Then with a bit of math I calculate what texture slice to use for a screen slice.

  aridale

  It's good to hear that you're getting 30fps. I only get 5-12fps on my rig. I may be able get a speedup by going back to 90 degree walls on a grid.

• • R0J0hound
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  • • Joined 15 Jun, 2009
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    • 90 topics • 7,289 posts
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  • 19 May, 2012
  • Quote

  darksteeldanger

  The first post I made in this topic has a link that explains it somewhat.

  Basically what I did is make a top view game. Then I made a sprite for each vertical line across the screen. Then the player on the top view shoots a spread of bullets, one for each vertical line. When a bullet hits a wall then the corresponding vertical slice is made visible and it's height is set to 100*1/distance(bullet, player).

  For the 2nd example I used the math here to find more precise wall intersections.

  http://paulbourke.net/geometry/lineline2d/

  For the texture I first split it into a frame per vertical slice. Then when the bullet(or ray) hits a wall I calc what texture slice to use by where on the line is hit.

  New version with more fixes:

  * multiple textures

  * commented

  * changed walls from lines to polygons.

  https://www.dropbox.com/s/czgsjbqz6lubf ... .capx?dl=1

  /examples11/raycast3.capx

• • R0J0hound
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  • • Joined 15 Jun, 2009
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  • 18 May, 2012
  • Quote

  Wastrel Thanks.

  Here is an improved example with:

  * textured walls

  * more precise wall/ray intersections

  * angled walls

  https://www.dropbox.com/s/lvox71xpnpvlg ... .capx?dl=1

  /examples11/raycast2.capx

• • R0J0hound
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  • • Joined 15 Jun, 2009
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    • 90 topics • 7,289 posts
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  • 16 May, 2012
  • Quote

  This page describes how to do ray casting:

  http://lodev.org/cgtutor/raycasting.html

  Here's a crude implantation:

  https://www.dropbox.com/s/qleknlzeqn2z2 ... .capx?dl=1

  /examples11/raycast.capx

  I have a slow computer so I made the example with a small display.

• • R0J0hound
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  • • Joined 15 Jun, 2009
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    • 90 topics • 7,289 posts
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  • 15 May, 2012
  • Quote

  Use this version of S:

  http://www.scirra.com/forum/forum_posts.asp?TID=38456&PID=232780&title=s-update-as-of-4-12-11#232780

  and the example works without crashing.

  hmmm. I know this is messy, but for now, you have to download the versions you see on each page as you go through the tuts

  I never updated them all to work with the latest version

  ...

  http://www.scirra.com/forum/forum_posts.asp?TID=38456&PID=271922&title=s-update-as-of-4-12-11#271922

• • R0J0hound
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  • • Joined 15 Jun, 2009
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    • 90 topics • 7,289 posts
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  • 15 May, 2012
  • Quote

  Here's the capx:

  http://dl.dropbox.com/u/5426011/bug/r90_minify_bug.capx

  Previewing and exporting without minify works as expected; "abcd" is appended to the Text. But when exporting with minify only "ab" is appended.

  If I replace "on any key pressed" with another trigger (other than "start of layout") it still occurs. Also if I replace "repeat" with another looping event such as "for" it still occurs.

  Construct 2 R90

  Winxp pro sp3

  Firefox 12.0

• • R0J0hound
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  • • Joined 15 Jun, 2009
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  • 15 May, 2012
  • Quote

  heater19

  Yeah... I agree I left out my my logic for the fix, which makes it not very helpful. So here's my trail of thought:

  Events 5-7 in your original capx only filtered the "Sprite" object. "Sprite2" is unfiltered and only the first instance of "Sprite2" is used in the expressions. "Text" is also not filtered. So it runs like this:

  if "Sprite" is CW from the first "Sprite2" then set all the "Text" objects' text to 'Left'.
  if "Sprite" is CCW from the first "Sprite2" then set all the "Text" objects' text to 'Right'.

  Relevant section of manual: http://www.scirra.com/manual/75/how-events-work

  So there are two problems.

  1. Only the first "Sprite2" is being compared against. Changing "Every tick" to "for each Sprite2" in event 5 fixes that.

  2. All the "Text" objects are getting set to the same value. What is needed is a way to be able to pick the "Text" that's paired with "Sprite2". Unfortunately he pin behavior doesn't cause the pinned objects to be picked, so some other method needs to be used.

  I like using a instance variable to store the UID of another object, so that the paired object can be picked at any time with "pick by UID", but that is not the only solution. You could alternatively use

  Text|Pick nearest to (Sprite2.X, Sprite2.Y)

  or

  System|pick Text instance Sprite2.IID

  and you would avoid the need for an additional variable.

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• • R0J0hound
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  • • Joined 15 Jun, 2009
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    • 90 topics • 7,289 posts
  • 1

  • 14 May, 2012
  • Quote

  Fixed with comments, hope it helps.

  http://dl.dropbox.com/u/5426011/fixed/vtrix.capx

  http://dl.dropbox.com/u/5426011/fixed/heater19.capx

• • R0J0hound
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  • • Joined 15 Jun, 2009
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    • 90 topics • 7,289 posts
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  • 10 May, 2012
  • Quote

  That is an interesting idea. Get a map generator going first. Each room only needs to know in what direction the doors are. For simplicity the doors could always be at the same locations. Then have it pick a random designed room with the same exits.

  Instead of having each designed room on a separate layer, put them on a separate layout, it makes it a bit simpler for designing. In my example the first thing the game does is run each room layout and save each objects position and size into a global array per room. I did this so that I can pick at runtime a room according to the directions of it's exits.

  I didn't do this in my example but having the room data stored in an array makes it easy to implement loading/unloading of rooms all in the same layout, so you can have massive layouts and not have to worry about high object counts bogging down the framerate.

  Here is an implementation of my ideas:

  https://www.dropbox.com/s/h0biq6u3d1e3e ... .capx?dl=1

  /examples11/rooms2.capx

  The bare minimum amount of rooms is 15, I used 30 so that each possible room has 2 variations.

• • R0J0hound
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  • • Joined 15 Jun, 2009
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    • 90 topics • 7,289 posts
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  • 9 May, 2012
  • Quote

  You can check if the game window has focus with python.

  http://dl.dropbox.com/u/5426011/examples11/focus.zip

• • R0J0hound
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  • • Joined 15 Jun, 2009
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  • 7 May, 2012
  • Quote

  I'll have to test it in linux, and see why it's different.

  Here was the original reason for the script:

  http://www.scirra.com/forum/experimental-cap-to-c2-converter_topic42194.html

  The project is in a coma waiting for C2 to get more features that CC has. At which point I might revive it.

• • R0J0hound
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  • • Joined 15 Jun, 2009
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    • 90 topics • 7,289 posts
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  • 7 May, 2012
  • Quote

  Use point filtering and use this action for each object:

  Set position to (round(.X), round(.Y))

  Also round the scroll position:

  Scroll to (round(scrollx), round(scrolly))

• • R0J0hound
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  • • Joined 15 Jun, 2009
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    • 90 topics • 7,289 posts
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  • 7 May, 2012
  • Quote

  The link here seems to still work:

  http://www.scirra.com/forum/effect-depixelize_topic43351.html

• • R0J0hound
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  • • Joined 15 Jun, 2009
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    • 90 topics • 7,289 posts
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  • 7 May, 2012
  • Quote

  Set the Array size to (Cols+1, Rows+1, 1)

  Otherwise the biggest column and row will be Cols-1 and Rows-1.

  The array's bottom row was lost since Array.At(x,Rows) was outside the array and wasn't saved.

• • R0J0hound
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  • • Joined 15 Jun, 2009
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    • 90 topics • 7,289 posts
  • 1

  • 7 May, 2012
  • Quote

  A way to do per pixel collisions with physics would be to create a small physics sprite for each collision pixel. I agree this is too tedious to do manually. I used the canvas object to read the pixels of the image, the I made it so only the edge pixels were created to reduce the object count.

  http://dl.dropbox.com/u/5426011/examples11/perpixel.capx