Advanced rayTracing

Author: michaljaz

coffee/client/module/World/World.coffee

@@ -102,7 +102,7 @@ class World
 					@cellMesh[i].material.dispose()
 					@scene.remove @cellMesh[i]
 					@cellMesh[i]="disposed"
-			@renderer.renderLists.dispose()
+					@renderer.renderLists.dispose()
 	updateCell: (data)->
 		#Updatowanie komórki z już obliczoną geometrią
 		cellId=@cellTerrain.vec3 data.info...
@@ -121,7 +121,7 @@ class World
 				_this.cellMesh[cellId].frustumCulled = true
 				_this.cellMesh[cellId].onAfterRender = ->
 			@scene.add @cellMesh[cellId]
-		else
+		else if mesh isnt "disposed"
 			@cellMesh[cellId].geometry=geometry
 		return
 	intersectsRay: (start,end) ->

coffee/client/module/index.coffee

@@ -80,6 +80,17 @@ init = ()->
 	inv_bar = new InventoryBar()
 	inv_bar.listen()
 
+	#Kursor raycastowania
+	cursor=new THREE.LineSegments(
+		new THREE.EdgesGeometry(
+			new THREE.BoxGeometry 1, 1, 1
+		),
+		new THREE.LineBasicMaterial {
+			color: 0x000000,
+			linewidth: 0.5
+		}
+	)
+	scene.add cursor
 
 	#Komunikacja z serwerem websocket
 	eventMap={
@@ -130,22 +141,17 @@ init = ()->
 			return
 		"entities":(entities)->
 			ent.update entities
+		"rayBlock":(block)->
+			if block isnt false
+				pos=block.position
+				cursor.position.set pos.x,pos.y+16,pos.z
+				cursor.visible=true
+			else
+				cursor.visible=false
 	}
 	for i of eventMap
 		socket.on i,eventMap[i]
 
-	#Kursor raycastowania
-	cursor=new THREE.LineSegments(
-		new THREE.EdgesGeometry(
-			new THREE.BoxGeometry 1, 1, 1
-		),
-		new THREE.LineBasicMaterial {
-			color: 0x000000,
-			linewidth: 0.5
-		}
-	)
-	scene.add cursor
-
 	#Interfejs dat.gui
 	gui = new GUI()
 	params={
@@ -185,15 +191,6 @@ render = ->
 		camera.aspect = width / height
 		camera.updateProjectionMatrix()
 
-	#Raycastowany block
-	rayBlock=world.getRayBlock()
-	if rayBlock
-		pos=rayBlock.posBreak
-		cursor.position.set pos...
-		cursor.visible=true
-	else
-		cursor.visible=false
-
 	#Updatowanie komórek wokół gracza
 	world.updateCellsAroundPlayer camera.position,params.chunkdist
 

coffee/server.coffee

@@ -32,9 +32,24 @@ module.exports=(type)->
 		res.set 'Cache-Control', 'no-store'
 		next()
 	server.listen config["port"],()->
-		console.log "Server is running on \x1b[34mhttp://localhost:#{config["port"]}\x1b[0m"
+		console.log "Server is running on \x1b[34m*:#{config["port"]}\x1b[0m"
 		# opn("http://#{config.host}:#{config['express-port']}")
 
+	#Raytracing
+	rayTraceBlock=(b)->
+		maxSteps = 20
+		vectorLength=5/16
+		cursor=b.entity.position.offset 0,b.entity.height,0
+		x = -Math.sin(b.entity.yaw) * Math.cos(b.entity.pitch)
+		y = Math.sin(b.entity.pitch)
+		z = -Math.cos(b.entity.yaw) * Math.cos(b.entity.pitch)
+		step=vec3(x,y,z).scaled(vectorLength)
+		for i in [0..maxSteps-1]
+			cursor.add(step)
+			block=b.blockAt(cursor)
+			if block and block.type isnt 0 and block.name isnt "cave_air"
+				return block
+		return false
 	#websocket
 	io.sockets.on "connection", (socket)->
 		socketInfo[socket.id]={}
@@ -106,12 +121,14 @@ module.exports=(type)->
 			socketEventMap={
 				"move":(state,toggle)->
 					bot().setControlState(state,toggle)
+					emit ["rayBlock",rayTraceBlock bot()]
 					return
 				"command":(com)->
 					bot().chat(com)
 					return
 				"rotate":(data)->
 					bot().look data...
+					emit ["rayBlock",rayTraceBlock bot()]
 					return
 				"disconnect":()->
 					try