test bump-3dpd lib

data/scripts/classes/player.lua

@@ -13,9 +13,20 @@ local Player = {
   
   accel = 0.3,
 
+  world = nil,
+
   ThrowPressed = Signal.new(),
 }
 
+local CAMERA_OFFSET = Vector3(0, -1, 0)
+
+function Player:init(world)
+  local x,y,z = ((self.position - Vector3(0.25, 1.0, 0.25)) * UNIT_SIZE):decomposed()
+  local w,h,d = (Vector3(0.25, 1.1, 0.25) * UNIT_SIZE):decomposed()
+  world:add(self, x,y,z,w,h,d)
+  self.world = world
+end
+
 function Player:tick(ctx)
   input_action{name = "left", control = "A"}
   input_action{name = "right", control = "D"}
@@ -34,17 +45,22 @@ function Player:tick(ctx)
 
   local direction = ((camera_forward * forward_input) + (camera_right * strafe_input)):normalized()
   local target_vel = direction * self.speed
-  self.velocity = self.velocity:lerp(target_vel, self.accel)
-
   if input_action_just_pressed{name = "throw"} then
     self.ThrowPressed:emit(self.position:copy(), camera_forward:copy())
   end
+  self.velocity = self.velocity:lerp(target_vel, self.accel)
+  local goal = ((self.position + CAMERA_OFFSET) + self.velocity) * UNIT_SIZE
+  local actual_x, actual_y, actual_z, cols, len = self.world:move(self, goal.x, goal.y, goal.z)
+  -- for i = 1, len do
+  --   print(util.printt(cols[i].other))
+  -- end
+  self.position = Vector3(actual_x / UNIT_SIZE, actual_y / UNIT_SIZE, actual_z / UNIT_SIZE) - CAMERA_OFFSET
 
   if ctx.mouse_capture then
     self.yaw = self.yaw + self.mouse_sensitivity * ctx.mouse_movement.x
   end
-
-  self.position = self.position + self.velocity
+  draw_text{font = "fonts/Lunchtype21_Regular.ttf", position = {x = 0, y = 0}, string = table.concat(table.pack(self.world:getCube(self)), ";"), height = 14}
+  draw_text{font = "fonts/Lunchtype21_Regular.ttf", position = {x = 0, y = 14}, string = tostring(self.position), height = 14}
 end
 
 return Player

data/scripts/game.lua

@@ -1,7 +1,12 @@
 util = require "util"
+UNIT_SIZE = 1
 local player = require "classes.player"
 local Vector3 = require "types.vector3"
 local List = require "types.list"
+local bump = require "lib.bump-3dpd"
+local AABB = require "types.aabb"
+
+local world = bump.newWorld()
 
 local Obj = require "classes.obj"
 
@@ -40,11 +45,19 @@ local function duck_seek_feed(duck)
   )
 end
 
+local test_aabb = AABB.new(Vector3(0, 0, 2), Vector3(1, 1, 1))
+
 -- called every frame, with constant delta time
 function game_tick()
   -- ctx.initialization_needed is true first frame and every time dynamic reload is performed
   if ctx.initialization_needed then
-    -- audio_play{audio = "music/bg1.xm", loops = true, channel = "music"}
+    player:init(world)
+    local x,y,z = (Vector3(0, 0, 2) * UNIT_SIZE):decomposed()
+    local w,h,d = (Vector3(1, 1, 1) * UNIT_SIZE):decomposed()
+    world:add(test_aabb, x,y,z,w,h,d)
+    print(world:getCube(test_aabb))
+    print(world:getCube(player))
+  -- audio_play{audio = "music/bg1.xm", loops = true, channel = "music"}
     player.ThrowPressed:connect(create_feed)
 
     -- spawn some ducks
@@ -56,7 +69,6 @@ function game_tick()
       duck.index = i
     end
   end
-  
   -- ctx.udata persists on reload
   if ctx.udata == nil then
     ctx.udata = {
@@ -85,10 +97,12 @@ function game_tick()
     texture = "images/measure001a.png",
     texture_region = { x = 0, y = 0, w = 512, h = 512 },
   }
-  draw_quad(util.merge(q, params))
+  -- draw_quad(util.merge(q, params))
   cube.position.y = math.sin(ctx.frame_number * 0.05)
   -- cube.position.z = math.cos(ctx.frame_number * 0.01)
   cube.rotation.x = cube.rotation.x + 0.01
   cube.rotation.z = cube.rotation.z + 0.01
   cube:draw()
+  
+  test_aabb:draw()
 end

data/scripts/types/aabb.lua

@@ -0,0 +1,85 @@
+local Vector3 = require "types.vector3"
+
+---@class AABB
+local AABB = {
+  min = Vector3(),
+  size = Vector3(),
+}
+
+local RED = {
+  r = 255,
+  g = 0,
+  b = 0,
+  a = 255,
+}
+
+setmetatable(AABB, AABB)
+
+AABB.__index = AABB
+
+---@param position Vector3
+---@param size Vector3
+---@return AABB
+function AABB.new(position, size)
+  position = position or Vector3()
+  size = size or Vector3(1, 1, 1)
+  local aabb = {
+    min = position,
+    size = size,
+  }
+
+  return setmetatable(aabb, AABB)
+end
+
+function AABB:get_max()
+  return self.min + self.size
+end
+
+function AABB:draw()
+  local max = self:get_max()
+  -- bottom rectangle
+  draw_line_3d{start = self.min, finish = Vector3(max.x, self.min.y, self.min.z)}
+  draw_line_3d{start = self.min, finish = Vector3(self.min.x, self.min.y, max.z)}
+  draw_line_3d{start = Vector3(max.x, self.min.y, max.z), finish = Vector3(self.min.x, self.min.y, max.z)}
+  draw_line_3d{start = Vector3(max.x, self.min.y, max.z), finish = Vector3(max.x, self.min.y, self.min.z)}
+  -- bottom rectangle diagonal
+  draw_line_3d{start = self.min, finish = Vector3(max.x, self.min.y, max.z), color = RED}
+  -- top rectangle
+  draw_line_3d{start = Vector3(self.min.x, max.y, self.min.z), finish = Vector3(max.x, max.y, self.min.z)}
+  draw_line_3d{start = Vector3(self.min.x, max.y, self.min.z), finish = Vector3(self.min.x, max.y, max.z)}
+  draw_line_3d{start = Vector3(max.x, max.y, max.z), finish = Vector3(self.min.x, max.y, max.z)}
+  draw_line_3d{start = Vector3(max.x, max.y, max.z), finish = Vector3(max.x, max.y, self.min.z)}
+  -- top rectangle diagonal
+  draw_line_3d{start = Vector3(max.x, max.y, max.z), finish = Vector3(self.min.x, max.y, self.min.z), color = RED}
+  -- hull
+  draw_line_3d{start = self.min, finish = Vector3(self.min.x, max.y, self.min.z)}
+  draw_line_3d{start = self.min, finish = Vector3(max.x, max.y, self.min.z), color = RED}
+
+  draw_line_3d{start = Vector3(max.x, self.min.y, self.min.z), finish = Vector3(max.x, max.y, self.min.z)}
+  draw_line_3d{start = Vector3(max.x, self.min.y, self.min.z), finish = Vector3(max.x, max.y, max.z), color = RED}
+
+  draw_line_3d{start = Vector3(max.x, self.min.y, max.z), finish = Vector3(max.x, max.y, max.z)}
+  draw_line_3d{start = Vector3(max.x, self.min.y, max.z), finish = Vector3(self.min.x, max.y, max.z), color = RED}
+
+  draw_line_3d{start = Vector3(self.min.x, self.min.y, max.z), finish = Vector3(self.min.x, max.y, max.z)}
+  draw_line_3d{start = Vector3(self.min.x, self.min.y, max.z), finish = Vector3(self.min.x, max.y, self.min.z), color = RED}
+end
+
+---returns true if the point is inside this aabb
+---@param point Vector3
+---@return boolean
+function AABB:has_point(point)
+  local max = self:get_max()
+  return point > self.min and point < max
+end
+
+---returns true if `other` intersects this AABB
+---@param other AABB
+---@return boolean
+function AABB:intersects(other)
+  local my_max = self:get_max()
+  local other_max = other:get_max()
+  return self.min <= other_max and my_max >= other.min
+end
+
+return AABB

data/scripts/types/vector3.lua

@@ -155,8 +155,39 @@ function Vector3:__tostring()
   return "Vector3(" .. tostring(self.x) .. ", " .. tostring(self.y) .. ", " .. tostring(self.z) .. ")"
 end
 
-Vector3.__index = Vector3
+-- note: the < and <= operators of this class are component-wise rather than lexicographic (that is, htey are useful for bounds checking but are not suitable for sorting.)
 
+function Vector3:__lt(b)
+  local err, other = coerce(b, true)
+  if err then return nil end
+  return self.x < other.x and self.y < other.y and self.z < other.z
+end
+
+function Vector3:__le(b)
+  local err, other = coerce(b, true)
+  if err then return nil end
+  return self.x <= other.x and self.y <= other.y and self.z <= other.z
+end
+
+local NUMK = {"x", "y", "z"}
+
+function Vector3:__index(key)
+  -- this allows constructs like `for i, v in ipairs(Vector3(3, 2, 1))` to iterate over components
+  if type(key) == "number" then
+    return rawget(self, NUMK[key])
+  end
+
+  return rawget(Vector3, key)
+end
+
+function Vector3:__newindex(key, value)
+  if NUMK[key] then
+    rawset(self, NUMK[key], value)
+    return
+  end
+
+  rawset(self, key, value)
+end
 --------API--------
 
 function Vector3:length_squared()
@@ -246,6 +277,24 @@ function Vector3:rotate(axis, angle)
   return self
 end
 
+---In place set.
+---@param x number
+---@param y number
+---@param z number
+---@return Vector3
+function Vector3:set(x, y, z)
+  self.x, self.y, self.z = x, y, z
+  return self
+end
+
+---In place set.
+---@param t vectorlike
+---@return Vector3
+function Vector3:sett(t)
+  self.x, self.y, self.z = t.x, t.y, t.z
+  return self
+end
+
 ---Returns a copy of this vector.
 ---@return Vector3
 function Vector3:copy()
@@ -307,6 +356,15 @@ end
 function Vector3:horizontal()
   return Vector3(self.x, 0.0, self.z)
 end
+
+---Returns the components of the vector individually.
+---@return number
+---@return number
+---@return number
+function Vector3:decomposed()
+  return self.x, self.y, self.z
+end
+
 ---- CONSTANTS
 
 ---@type Vector3

data/scripts/v3test.lua

@@ -0,0 +1,21 @@
+local Vector3 = require "types.vector3"
+
+local function pf(x, y, z)
+  print(x, y, z)
+end
+
+local v1 = Vector3(2, 1, 1)
+local v2 = Vector3(3, 4, 4)
+pf(v1:decomposed())
+-- print(v1)
+-- print(v2)
+-- v1[1] = 383838
+-- v1.y = 8858
+-- print(v1)
+-- print(v1:normalized())
+-- print(v2)
+
+-- for i, v in ipairs(v2) do
+--   print(i, v)
+-- end
+