Slopes - Socoder

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Socoder -> Off Topic -> Slopes
Sat, 14 Jun 2014, 06:01
spinal	Argh!!! slopes!!!
Sat, 14 Jun 2014, 06:01
Jayenkai	Indeed! Note how often I've used slopes!!
Sat, 14 Jun 2014, 06:04
spinal	I have a 2 tile slope (32*16) I can walk up the first tile, but once I get to the second pixel of the second tile I bounce up in the air for no reason! ARGH! I may have to redo my whole collision detection from scratch... -=-=- Check out my excellent homepage!
Sat, 14 Jun 2014, 06:12
Jayenkai	Bouncy slopes!!! FloorHeight=top-(x/2) or something.. Been a long time since I bothered!! It was MUCH easier with proper pixel-based collision detection. You could keep the player falling until the player reached the tile in question.. -=-=- ''Load, Next List!''
Sat, 14 Jun 2014, 14:49
spinal	ARGH!!!!!! ' apply gravity PlayerY = PlayerY + PlayerDrop PlayerDrop = PlayerDrop + Gravity If PlayerDrop > MaxGravity Then PlayerDrop = MaxGravity dotX = PlayerX dotY = PlayerY + 7 If GetTile(PlayerX,PlayerY + 7) = 145 Then PlayerDrop = 0 PlayerY = Int(PlayerY/TileSize)TileSize +8 - (PlayerX Mod 16 /2) End If If GetTile(PlayerX,PlayerY + 7) = 146 Then PlayerDrop = 0 PlayerY = Int(PlayerY/TileSize)TileSize - (PlayerX Mod 16 /2) End If If GetTile(PlayerX,PlayerY + 8) >= FirstFloorTile Then PlayerDrop = 0 PlayerY = Int(PlayerY/TileSize)TileSize + 8 End If --v I've been literally fighting with that code ALL DAY!!!!! basically tiles 145 and 146 make a 3216 slope, im trying to walk up it, that's it! FirstFloorTile is a few higher, so under previous iterations the player would just walk in front of the slope tiles. What in the name of all things sane and logical am I doing wrong? -=-=- Check out my excellent homepage!
Sat, 14 Jun 2014, 15:47
Jayenkai	Random shot in the dark, could it be to do with the "playerY+7" bit? As soon as it pushes the player up to tileheight+8, then playerY+7 would be looking at the wrong tile, wouldn't it?? Suggest analysing more than the immediately beneath tile. Scan the current location, the one beneath, and the one below that, then try to work out whether you're in the right place. Recently I've opted for 2 sets of co-ordinates per player/enemy/etc. You have your X,Y co-ordinates, tile based, so 3,5 would be the 3rd tile across, and 5th down.. Then I have OffsetX and OffsetY, which are floats. When you move left, you do OffsetX-0.1, then when you hit <-0.5, do OffsetX+1 and X-1 When drawing, draw at (x+OffsetX)*tilesize Doing it that way ensures that you always have a int-based grid reference, and can easily do checks like "if offset>-0.25" -=-=- ''Load, Next List!''
Sun, 15 Jun 2014, 12:44
Dabz	There is an article kicking about about platformers... someone put it over at the bb.com forums... good read, really recommend you search for it because its got the lot! Dabz -=-=- Intel Core i5 6400 2.7GHz, NVIDIA GeForce GTX 1070 (8GB), 8Gig DDR4 RAM, 256GB SSD, 1TB HDD, Windows 10 64bit
Sun, 15 Jun 2014, 19:31
therevillsgames	I think this is the one Dabz is thinking about: https://www.gamedev.net/page/resources/_/technical/game-programming/the-guide-to-implementing-2d-platformers-r2936
Mon, 16 Jun 2014, 16:47
Dabz	That's the fella! Top stuff Dabz
Wed, 18 Jun 2014, 13:37
spinal	AAAAAAAAAAAAAAAAAAAARRRRRRRRRRRRRRRRRRGGGGGGGGGGGGGGHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!!! -=-=- Check out my excellent homepage!
Fri, 20 Jun 2014, 11:19
spinal	Right, switching image handles to top left, all this centre malarkey is throwing my maths off. -=-=- Check out my excellent homepage!
Mon, 23 Jun 2014, 01:56
spinal	Never ever ever let me loose this code!!!! ' / slope tileX = Int((PlayerX+8)/16)16 tileY = Int((PlayerY+15)/16)16 If GetTile(PlayerX+8,PlayerY+15) = 145 Then PlayerY = tileY-16 + slope1[(PlayerX+8) Mod 16] +1 PlayerDrop = 0 End If If GetTile(PlayerX+8,PlayerY+15) = 146 Then PlayerY = tileY-16 + slope2[(PlayerX+8) Mod 16] +1 PlayerDrop = 0 End If If GetTile(PlayerX+8,PlayerY+16) = 146 Then If GetTile(PlayerX+8,PlayerY+15) < FirstFloorTile Then If (PlayerX+8) Mod 16 >= 14 Then PlayerY = Int((PlayerY)/16)16 +1 PlayerDrop = 0 End If End If End If ' \ slope If GetTile(PlayerX+8,PlayerY+15) = 147 Then PlayerY = tileY - slope1[(PlayerX+8) Mod 16] +1 PlayerDrop = 0 End If If GetTile(PlayerX+8,PlayerY+15) = 148 Then PlayerY = tileY - slope2[(PlayerX+8) Mod 16] +1 PlayerDrop = 0 End If If GetTile(PlayerX+8,PlayerY+16) = 147 Then If GetTile(PlayerX+8,PlayerY+15) < FirstFloorTile Then If (PlayerX+8) Mod 16 <= 1 Then PlayerY = Int((PlayerY)/16)16 +1 PlayerDrop = 0 End If End If End If --v -=-=- Check out my excellent homepage!
Mon, 23 Jun 2014, 05:04
Jayenkai	Congrats on getting it working (hopefully ) Can't wait to see Joe running along slanted lines! 'tis a strange new world he's heading to! -=-=- ''Load, Next List!''
Mon, 23 Jun 2014, 14:46
spinal	tweaked a little to remove the 'snap' on landing from a jump ' apply gravity PlayerY = Int(PlayerY + PlayerDrop) PlayerDrop = PlayerDrop + Gravity If PlayerDrop > MaxGravity Then PlayerDrop = MaxGravity dotX = PlayerX + 8 dotY = PlayerY + 15 If PlayerDrop >=0 Then If GetTile(PlayerX+8,PlayerY+16) >= FirstFloorTile Then PlayerY = Int(PlayerY/TileSize)TileSize PlayerDrop = 0 End If ' / slope tileX = Int((PlayerX+8)/16)16 tileY = Int((PlayerY+15)/16)16 If GetTile(PlayerX+8,PlayerY+15) = 145 Then If (PlayerY+15) Mod 16 >= slope2[(PlayerX+8) Mod 16]+4 Then PlayerY = tileY-16 + slope1[(PlayerX+8) Mod 16] +1 PlayerDrop = 0 End if End If If GetTile(PlayerX+8,PlayerY+15) = 146 Then PlayerY = tileY-16 + slope2[(PlayerX+8) Mod 16] +1 PlayerDrop = 0 End If If GetTile(PlayerX+8,PlayerY+16) = 146 Then If GetTile(PlayerX+8,PlayerY+15) < FirstFloorTile Then If (PlayerX+8) Mod 16 >= 14 Then PlayerY = Int((PlayerY)/16)16 +1 PlayerDrop = 0 End If End If End If ' \ slope If GetTile(PlayerX+8,PlayerY+15) = 147 Then PlayerY = tileY - slope1[(PlayerX+8) Mod 16] +1 PlayerDrop = 0 End If If GetTile(PlayerX+8,PlayerY+15) = 148 Then If (PlayerY+15) Mod 16 >= 16-slope2[(PlayerX+8) Mod 16]-4 Then PlayerY = tileY - slope2[(PlayerX+8) Mod 16] +1 PlayerDrop = 0 End If End If If GetTile(PlayerX+8,PlayerY+16) = 147 Then If GetTile(PlayerX+8,PlayerY+15) < FirstFloorTile Then If (PlayerX+8) Mod 16 <= 1 Then PlayerY = Int((PlayerY)/16)*16 +1 PlayerDrop = 0 End If End If End If End If --v -=-=- Check out my excellent homepage!
Mon, 23 Jun 2014, 21:10
therevillsgames	Whats with all the magic numbers? What is the slope1 and slope2 arrays?
Tue, 24 Jun 2014, 00:24
spinal	mostly random crap for debugging. Slope1 and slope2 are heights for each column of pixels within the two slanted tiles. i never thought id have this much trouble doing ramps without just grabbing the pixels from the screen -=-=- Check out my excellent homepage!
Tue, 24 Jun 2014, 19:32
therevillsgames	So at the moment you only have two incline of slopes? With the magic numbers I was talking about this kind of coding: If GetTile(PlayerX+8,PlayerY+16) >= FirstFloorTile Then --v I guess 8 and 16 are the centre of the player sprite? It's better if you set a variable for these so you can alter the size of your sprites in the future.
Wed, 25 Jun 2014, 03:03
spinal	8=center, 16=feet, yeah. resize my sprites!!!!! are you serious!!!!!???! Joe is 16x16 and always will be (in the near future anyway), he's 16bit don't you know! -=-=- Check out my excellent homepage!