| 32 | function Crawler:loadCrawlers(xmlFile) |
| 33 | local wheelId = Utils.getNoNil(self.configurations["wheel"], 1); |
| 34 | local baseKey = string.format("vehicle.wheelConfigurations.wheelConfiguration(%d)", wheelId-1); |
| 35 | if not hasXMLProperty(xmlFile, baseKey) then |
| 36 | baseKey = "vehicle"; |
| 37 | end; |
| 38 | |
| 39 | local i = 0; |
| 40 | while true do |
| 41 | local key = string.format(baseKey..".crawlers.crawler(%d)", i); |
| 42 | if not hasXMLProperty(xmlFile, key) then |
| 43 | break; |
| 44 | end; |
| 45 | |
| 46 | local indexBase = self.components; |
| 47 | local crawler = {}; |
| 48 | |
| 49 | local filename = getXMLString(xmlFile, key .. "#filename"); |
| 50 | if filename ~= nil then |
| 51 | crawler.filename = filename; |
| 52 | crawlerIndex = Utils.getNoNil(getXMLString(xmlFile, key .. "#crawlerIndex"), "0|0"); |
| 53 | linkIndex = Utils.getNoNil(getXMLString(xmlFile, key .. "#linkIndex"), "0>"); |
| 54 | offset = Utils.getVectorNFromString(Utils.getNoNil(getXMLString(xmlFile, key .. "#offset"), "0 0 0"), 3); |
| 55 | local i3dNode = Utils.loadSharedI3DFile(filename, self.baseDirectory, false, false, false); |
| 56 | if i3dNode ~= 0 then |
| 57 | local loadedCrawler = Utils.indexToObject(i3dNode, crawlerIndex); |
| 58 | local linkNode = Utils.indexToObject(self.components, linkIndex); |
| 59 | link(linkNode, loadedCrawler); |
| 60 | setTranslation(loadedCrawler, offset[1], offset[2], offset[3]); |
| 61 | indexBase = loadedCrawler; |
| 62 | delete(i3dNode); |
| 63 | end; |
| 64 | end; |
| 65 | |
| 66 | crawler.node = Utils.indexToObject(indexBase, getXMLString(xmlFile, key.."#index")); |
| 67 | crawler.speedRefNode = Utils.getNoNil(Utils.indexToObject(indexBase, getXMLString(xmlFile, key.."#speedRefNode")), node); |
| 68 | |
| 69 | if crawler.node ~= nil then |
| 70 | local speedRefWheel = getXMLInt(xmlFile, key.."#speedRefWheel"); |
| 71 | if speedRefWheel ~= nil and self.wheels[speedRefWheel] ~= nil then |
| 72 | crawler.speedRefWheel = self.wheels[speedRefWheel]; |
| 73 | end; |
| 74 | crawler.scrollSpeed = Utils.getNoNil(getXMLFloat(xmlFile, key.."#scrollSpeed"), 1); |
| 75 | crawler.shaderParameterName = Utils.getNoNil(getXMLString(xmlFile, key.."#shaderParameterName"), "scrollPosition"); |
| 76 | crawler.shaderParameterComponent = Utils.getNoNil(getXMLInt(xmlFile, key.."#shaderParameterComponent"), 1); |
| 77 | crawler.scrollPosition = 0; |
| 78 | crawler.scrollLength = Utils.getNoNil(getXMLFloat(xmlFile, key.."#scrollLength"), 1); |
| 79 | |
| 80 | crawler.rotatingParts = Utils.getNoNil(crawler.rotatingParts, {}); |
| 81 | local j = 0; |
| 82 | while true do |
| 83 | local keyRotation = key..string.format(".rotatingPart(%d)", j); |
| 84 | if not hasXMLProperty(xmlFile, keyRotation) then |
| 85 | break; |
| 86 | end; |
| 87 | local rotationPart = {}; |
| 88 | rotationPart.node = Utils.indexToObject(indexBase, getXMLString(xmlFile, keyRotation.."#index")); |
| 89 | rotationPart.speedScale = getXMLFloat(xmlFile, keyRotation.."#speedScale"); |
| 90 | if rotationPart.speedScale == nil then |
| 91 | rotationPart.speedScale = 1.0 / Utils.getNoNil(getXMLFloat(xmlFile, keyRotation.."#radius"), 1); |
| 92 | end; |
| 93 | if rotationPart.node ~= nil then |
| 94 | table.insert(crawler.rotatingParts, rotationPart); |
| 95 | end; |
| 96 | j = j + 1; |
| 97 | end; |
| 98 | |
| 99 | table.insert(self.crawlers, crawler); |
| 100 | end; |
| 101 | i = i + 1; |
| 102 | end; |
| 103 | end; |
| 124 | function Crawler:update(dt) |
| 125 | if self:getIsActive() then |
| 126 | for i, crawler in pairs(self.crawlers) do |
| 127 | local movedDistance = 0; |
| 128 | |
| 129 | if crawler.speedRefWheel ~= nil then |
| 130 | |
| 131 | local newX, _, _ = getRotation(crawler.speedRefWheel.driveNode); |
| 132 | if crawler.lastRotation == nil then |
| 133 | crawler.lastRotation = newX; |
| 134 | end; |
| 135 | |
| 136 | if newX - crawler.lastRotation < -math.pi then |
| 137 | crawler.lastRotation = crawler.lastRotation - 2*math.pi; |
| 138 | elseif newX - crawler.lastRotation > math.pi then |
| 139 | crawler.lastRotation = crawler.lastRotation + 2*math.pi; |
| 140 | end; |
| 141 | |
| 142 | movedDistance = crawler.speedRefWheel.radius * (newX-crawler.lastRotation); |
| 143 | |
| 144 | crawler.lastRotation = newX; |
| 145 | else |
| 146 | local newX, newY, newZ = getWorldTranslation(crawler.speedRefNode); |
| 147 | if crawler.lastPosition == nil then |
| 148 | crawler.lastPosition = {newX, newY, newZ}; |
| 149 | end; |
| 150 | local dx, dy, dz = worldDirectionToLocal(crawler.speedRefNode, newX-crawler.lastPosition[1], newY-crawler.lastPosition[2], newZ-crawler.lastPosition[3]); |
| 151 | local movingDirection = 0; |
| 152 | if dz > 0.0001 then |
| 153 | movingDirection = 1; |
| 154 | elseif dz < -0.0001 then |
| 155 | movingDirection = -1; |
| 156 | end; |
| 157 | movedDistance = Utils.vector3Length(dx, dy, dz) * movingDirection; |
| 158 | crawler.lastPosition[1] = newX; |
| 159 | crawler.lastPosition[2] = newY; |
| 160 | crawler.lastPosition[3] = newZ; |
| 161 | end; |
| 162 | |
| 163 | crawler.scrollPosition = (crawler.scrollPosition + movedDistance*crawler.scrollSpeed) % crawler.scrollLength; |
| 164 | if crawler.shaderParameterComponent == 1 then |
| 165 | setShaderParameter(crawler.node, crawler.shaderParameterName, crawler.scrollPosition,0,0,0, false); |
| 166 | else |
| 167 | setShaderParameter(crawler.node, crawler.shaderParameterName, 0,crawler.scrollPosition,0,0, false); |
| 168 | end; |
| 169 | |
| 170 | for _, rotatingPart in pairs(crawler.rotatingParts) do |
| 171 | rotate(rotatingPart.node, rotatingPart.speedScale * movedDistance, 0, 0); |
| 172 | end; |
| 173 | end; |
| 174 | end; |
| 175 | end; |