Guys, can i ask for ideas? how would you handle a collision detection with tile map?
i have created platforms and should make them unwalkable tiles. is their a way to set these tiles to become unwalkable?
Collision Detection with a tilemap
(12 posts) (6 voices)-
Personally I created some special tiles at the begining of my tileset ( since there could be not only tiles that you can't walk through, but ones you can walk on but jump up through, ones that damage you, etc ). I created a layer in my TMX to put those on, then turned off the visibility of the layer when I saved it.
I modified TMXTileMap to still load the layer if it's not visible but set the visibility of the layer to be hidden. Then I can still get at the layer and use tileGIDAt.
For me it makes it easier to only have to check against one GID for each possible *type* of tile, than each individual tile that could *be* that type.
Posted 2 years ago # -
Look in TMXTiledMap for the initWithTMXFile method ( around line 553 ) - there is a block to skip loading the layer if it's not visible. Comment out that if block and add in a line to set the visibility of the layer, so the block looks like this:
for( TMXLayerInfo *layerInfo in mapInfo.layers ) { //if( layerInfo.visible ) { id child = [self parseLayer:layerInfo map:mapInfo]; [child setVisible:layerInfo.visible]; [self addChild:child z:idx tag:idx]; // update content size with the max size CGSize childSize = [child contentSize]; CGSize currentSize = [self contentSize]; currentSize.width = MAX( currentSize.width, childSize.width ); currentSize.height = MAX( currentSize.height, childSize.height ); [self setContentSize:currentSize]; idx++; //} }The changed items are the commented start / close of the if block and the [child setVisible:layerInfo.visible]; addition.
I typically create a layer ( called something like "walkables" ) in my TMX that then has it's visibility turned off before I save it and can get the tileGID using something like this:
TMXLayer *layer = [mymap layerNamed:@"walkables"]; if ( [layer tileGIDAt:ccp( x, y )] != 1 ) { // walkable tileHope that helps =)
Posted 2 years ago # -
I applied the awesome patch for object layers in 0.8.2 and have been using that to set spawn points, collectable positions, enemies, etc. It has been simply invaluable, imo.
I guess it didn't seem like the solution ( to me ) for determining tile types though, since it's not like taking a brush and painting the areas appropriately. Placing an object and setting it's properties for every single tile that could be non-walkable, landable, harmful, etc seemed ineffecient and not really what the "objects" layers were for to me. =)
Posted 2 years ago # -
craigching
MemberDepends on how you look at it I guess. I like to create an object called TileProperties per tile so that individual tiles can have different properties (e.g. walkable). I prefer that to using an image to indicate something that doesn't really have a rendering. One thing I will admit, though, is that tiled's interface for bulk creating a lot of similar objects is really lacking. I'm going to be enhancing tiled to have a palette of objects that you can "paint" into an object layer.
Posted 2 years ago # -
Has anyone got a source code on a test map using the object layer? I'd love to mess around with it like that.
Posted 1 year ago #
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