Jump Jet Improvement Request (Code Updates Posted in Thread)

[REVENGE]

For the jumpjets widget, I would like to request some improvements:

First, give a visual indication of the reloadtime.

Second, give a visual indication of whether or not the landing site is valid.

[X]Third, add a section "energy" in the config file that defines the amount of energy used per jump. -DONE

Forth, add a section "hotkey" in the config file that allows you to bind a hotkey to the jump command.

[REVENGE]

Adding energy usage is trivial, of course. So I got off my lazy ass, looked up the commands, and changed the code. This is what was changed within the gadget:

Code: Select all

local function Jump(unitID, finish)

  jumping[unitID]= true
  lastJump[unitID] = Spring.GetGameSeconds()
    
  local vector        = {}
  local vertex        = {}
  local start         = {Spring.GetUnitPosition(unitID)}
 
  local unitDefID     = Spring.GetUnitDefID(unitID)
  local speed         = jumpDefs[unitDefID].speed
  local height        = jumpDefs[unitDefID].height
  local ecost         = jumpDefs[unitDefID].ecost or 0
  local teamID        = Spring.GetUnitTeam(unitID)

  for i=1, 3 do
    vector[i]         = finish[i] - start[i]
  end
  
  -- vertex of the parabola
  vertex[1]           = start[1] + vector[1]*0.5
  vertex[2]           = start[2] + vector[2]*0.5 + (1-(2*0.5-1)^2)*height
  vertex[3]           = start[3] + vector[3]*0.5
  
  local lineDist      = GetDist3(start, finish)
  local flightDist    = GetDist3(start, vertex) + GetDist3(vertex, finish)
  
  local speed         = speed * lineDist/flightDist
  
  local step          = speed/lineDist
  
  local rotUnit       = 2^16 / (2*math.pi)
  local startHeading  = Spring.GetUnitHeading(unitID) + 2^15
  local finishHeading = Spring.GetHeadingFromVector(vector[1], vector[3]) + 2^15
  
  -- pick shortest turn direction
  if (finishHeading  >= startHeading + 2^15) then
    startHeading = startHeading + 2^16
  elseif (finishHeading  < startHeading - 2^15)  then
    finishHeading  = finishHeading  + 2^16
  end
  local turn = finishHeading - startHeading
  
  Spring.CallCOBScript(unitID, "BeginJump", 0)
  Spring.UseUnitResource(unitID, "e", ecost)
    
  MoveCtrl.Enable(unitID)

  MoveCtrl.SetLeaveTracks(unitID, false)
  
  MoveCtrl.SetRotation(unitID, 0, (startHeading - 2^15)/rotUnit, 0) -- keep current heading
  MoveCtrl.SetRotationVelocity(unitID, 0, turn/rotUnit*step, 0)

And in your config file, simply add a tag "ecost" and set it to how much energy the jump will cost. It is still optional, btw, so having it undefined is ok.