initial commit

src/controllers/gridwalker.lua

@@ -0,0 +1,92 @@
+local character = require "../character"
+
+Gridwalker = class()
+
+Gridwalker.speed = 2
+Gridwalker.collisionTestSize = 12
+Gridwalker.neighbourOffsetX = (character.width - Gridwalker.collisionTestSize) / 2
+Gridwalker.neighbourOffsetY = character.width - Gridwalker.collisionTestSize * 1.5
+Gridwalker.testShape = nil
+Gridwalker.charinfo = nil
+
+function Gridwalker:sendKey(key)
+  if key == "w" or key == "up" then
+    self:up()
+  end
+
+  if key == "s" or key == "down" then
+    self:down()
+  end
+
+  if key == "d" or key == "right" then
+    self:right()
+  end
+
+  if key == "a" or key == "left" then
+    self:left()
+  end
+end
+
+function Gridwalker:up()
+  local newX = self.charinfo.x
+  local newY = self.charinfo.y - self.speed
+
+  self:move(newX, newY, character.walking_up)
+end
+
+function Gridwalker:down()
+  local newX = self.charinfo.x
+  local newY = self.charinfo.y + self.speed
+
+  self:move(newX, newY, character.walking_down)
+end
+
+function Gridwalker:right()
+  local newX = self.charinfo.x + self.speed
+  local newY = self.charinfo.y
+
+  self:move(newX, newY, character.walking_right)
+end
+
+function Gridwalker:left()
+  local newX = self.charinfo.x - self.speed
+  local newY = self.charinfo.y
+
+  self:move(newX, newY, character.walking_left)
+end
+
+function Gridwalker:init()
+  self.testShape = collider:addRectangle(self.charinfo.x + self.neighbourOffsetX, self.charinfo.y + self.neighbourOffsetY, self.collisionTestSize, self.collisionTestSize)
+  collider:setPassive(self.testShape)
+end
+
+function Gridwalker:setTestShape(x, y)
+  local testX = x + self.neighbourOffsetX + self.collisionTestSize / 2
+  local testY = y + self.neighbourOffsetY + self.collisionTestSize / 2
+
+  self.testShape:moveTo(testX, testY)
+
+  return testX, testY
+end
+
+function Gridwalker:move(x, y, pose)
+  local noCollision = true
+
+  local testX, testY = self:setTestShape(x, y)
+
+  for other in pairs(collider:shapesInRange(testX, testY, testX + self.collisionTestSize, testY + self.collisionTestSize)) do
+    if self.testShape:collidesWith(other) then
+      noCollision = false
+      break
+    end
+  end
+
+  if noCollision then
+    self.charinfo.x = x
+    self.charinfo.y = y
+  else
+    self:setTestShape(self.charinfo.x, self.charinfo.y)
+  end
+
+  self.charinfo.pose = pose
+end