```
function K2DItemCheckXY takes real x, real y returns boolean
call SetItemPosition(udg_K2DItem, x, y)
return RAbsBJ(GetWidgetX(udg_K2DItem) - x +GetWidgetY(udg_K2DItem) - y) < 1
endfunction
function K2DItemCheckAxis takes real x, real y returns boolean
local real x2 = x*udg_K2DRadius[udg_UDex]
local real y2 = y*udg_K2DRadius[udg_UDex]
set x = udg_K2DX + x2
set y = udg_K2DY + y2
if K2DItemCheckXY(x, y) and not IsTerrainPathable(x, y, PATHING_TYPE_WALKABILITY) then
set x = udg_K2DX - x2
set y = udg_K2DY - y2
return K2DItemCheckXY(x, y) and not IsTerrainPathable(x, y, PATHING_TYPE_WALKABILITY)
endif
return false
endfunction
function K2DItemCheck takes nothing returns boolean
local boolean result = K2DItemCheckXY(udg_K2DX, udg_K2DY)
//Only perform additional pathing checks if the unit has a larger collision.
if result and udg_Knockback2DRobustPathing > 0 and udg_K2DRadius[udg_UDex] > 0 then
//Check horizontal axis of unit to make sure nothing is going to collide
set result = K2DItemCheckAxis(udg_K2DCosH[udg_UDex], udg_K2DSinH[udg_UDex])
//Check vertical axis of unit to ensure nothing will collide
set result = result and K2DItemCheckAxis(udg_K2DCos[udg_UDex], udg_K2DSin[udg_UDex])
if result and udg_Knockback2DRobustPathing == 2 and udg_K2DRadius[udg_UDex] > 16 then
//Check diagonal axis of unit if more thorough pathing is desired
set result = K2DItemCheckAxis(udg_K2DCosD1[udg_UDex], udg_K2DSinD1[udg_UDex])
set result = result and K2DItemCheckAxis(udg_K2DCosD2[udg_UDex], udg_K2DSinD2[udg_UDex])
endif
endif
//Reset item so it won't interfere with the map
call SetItemPosition(udg_K2DItem, udg_K2DMaxX, udg_K2DMaxY)
call SetItemVisible(udg_K2DItem, false)
return result
endfunction
function K2DItemFilter takes nothing returns boolean
//Check for visible items, temporarily hide them and add them to the filter.
if IsItemVisible(GetFilterItem()) then
call SetItemVisible(GetFilterItem(), false)
return true
endif
return false
endfunction
function K2DItemCode takes nothing returns nothing
//Perform the item-pathing check only once, then unhide those filtered items
if not udg_K2DItemsFound then
set udg_K2DItemsFound = true
set udg_K2DItemOffset = K2DItemCheck()
endif
call SetItemVisible(GetEnumItem(), true)
endfunction
function K2DKillDest takes nothing returns nothing
local real x
local real y
//Handle destruction of debris
set bj_destRandomCurrentPick = GetEnumDestructable()
if GetWidgetLife(bj_destRandomCurrentPick) > 0.405 and IssueTargetOrder(udg_K2DDebrisKiller, udg_Knockback2DTreeOrDebris, bj_destRandomCurrentPick) then
set x = GetWidgetX(bj_destRandomCurrentPick) - udg_K2DX
set y = GetWidgetY(bj_destRandomCurrentPick) - udg_K2DY
if x*x + y*y <= udg_K2DDestRadius[udg_UDex] then
call KillDestructable(bj_destRandomCurrentPick)
endif
endif
endfunction
function K2DEnumDests takes nothing returns nothing
call MoveRectTo(udg_K2DRegion, udg_K2DX, udg_K2DY)
if udg_K2DKillTrees[udg_UDex] then
call SetUnitX(udg_K2DDebrisKiller, udg_K2DX)
call SetUnitY(udg_K2DDebrisKiller, udg_K2DY)
call EnumDestructablesInRect(udg_K2DRegion, null, function K2DKillDest)
endif
endfunction
function Knockback2DCheckXY takes real x, real y returns boolean
set udg_K2DX = x + udg_K2DVelocity[udg_UDex]*udg_K2DCos[udg_UDex]
set udg_K2DY = y + udg_K2DVelocity[udg_UDex]*udg_K2DSin[udg_UDex]
if udg_K2DSimple[udg_UDex] then
//A "pull" effect or a missile system does not require complex pathing.
if udg_K2DX <= udg_K2DMaxX and udg_K2DX >= udg_K2DMinX and udg_K2DY <= udg_K2DMaxY and udg_K2DY >= udg_K2DMinY then
call K2DEnumDests()
return true
endif
return false
elseif udg_K2DFlying[udg_UDex] then
return not IsTerrainPathable(udg_K2DX, udg_K2DY, PATHING_TYPE_FLYABILITY)
elseif not IsTerrainPathable(udg_K2DX, udg_K2DY, PATHING_TYPE_WALKABILITY) then
call K2DEnumDests()
set udg_K2DItemOffset = false
call EnumItemsInRect(udg_K2DRegion, Filter(function K2DItemFilter), function K2DItemCode)
if udg_K2DItemsFound then
//If items were found, the check was already performed.
set udg_K2DItemsFound = false
else
//Otherwise, perform the check right now.
set udg_K2DItemOffset = K2DItemCheck()
endif
return udg_K2DItemOffset
endif
return udg_K2DAmphibious[udg_UDex] and not IsTerrainPathable(udg_K2DX, udg_K2DY, PATHING_TYPE_FLOATABILITY)
endfunction
function Knockback2DApplyAngle takes real angle returns nothing
set angle = ModuloReal(angle, udg_Radians_Turn)
set udg_K2DCos[udg_UDex] = Cos(angle)
set udg_K2DSin[udg_UDex] = Sin(angle)
set udg_K2DAngle[udg_UDex] = angle
if udg_Knockback2DRobustPathing > 0 then
set angle = ModuloReal(angle + udg_Radians_QuarterTurn, udg_Radians_Turn)
set udg_K2DCosH[udg_UDex] = Cos(angle)
set udg_K2DSinH[udg_UDex] = Sin(angle)
if udg_Knockback2DRobustPathing == 2 and udg_K2DRadius[udg_UDex] > 16 then
set angle = ModuloReal(angle + udg_Radians_QuarterPi, udg_Radians_Turn)
set udg_K2DCosD1[udg_UDex] = Cos(angle)
set udg_K2DSinD1[udg_UDex] = Sin(angle)
set angle = ModuloReal(angle + udg_Radians_QuarterTurn, udg_Radians_Turn)
set udg_K2DCosD2[udg_UDex] = Cos(angle)
set udg_K2DSinD2[udg_UDex] = Sin(angle)
endif
endif
endfunction
function Knockback2DLooper takes nothing returns nothing
local integer i = 0
local unit u
local real x
local real y
call PauseUnit(udg_K2DDebrisKiller, false)
loop
set i = udg_K2DNext[i]
exitwhen i == 0
set udg_UDex = i
set udg_K2DTimeLeft[i] = udg_K2DTimeLeft[i] - udg_K2DTimeout
set udg_K2DDistanceLeft[i] = udg_K2DDistanceLeft[i] - udg_K2DVelocity[i]
set u = udg_UDexUnits[i]
if udg_K2DTimeLeft[i] > 0.00 then
if udg_K2DTimeLeft[i] < udg_K2DHeightThreshold[i] and udg_K2DHeightThreshold[i] != 0.00 then
call SetUnitFlyHeight(u, GetUnitDefaultFlyHeight(u), GetUnitFlyHeight(u) - GetUnitDefaultFlyHeight(u)/udg_K2DHeightThreshold[i])
set udg_K2DHeightThreshold[i] = 0.00
endif
if udg_K2DPause[i] then
set x = udg_K2DLastX[i]
set y = udg_K2DLastY[i]
else
set x = GetUnitX(u)
set y = GetUnitY(u)
endif
if not Knockback2DCheckXY(x, y) then
if not udg_K2DFreeze[i] and IsTriggerEnabled(udg_K2DImpact[i]) and TriggerEvaluate(udg_K2DImpact[i]) then
call TriggerExecute(udg_K2DImpact[i])
endif
if udg_K2DBounce[i] then
call Knockback2DApplyAngle(udg_Radians_Turn - udg_K2DAngle[i])
if not Knockback2DCheckXY(x, y) then
call Knockback2DApplyAngle(udg_K2DAngle[i] + bj_PI)
if not Knockback2DCheckXY(x, y) then
call Knockback2DApplyAngle(udg_Radians_Turn - udg_K2DAngle[i])
set udg_K2DX = x
set udg_K2DY = y
endif
endif
else
set udg_K2DX = x
set udg_K2DY = y
set udg_K2DFreeze[i] = true
endif
endif
call SetUnitX(u, udg_K2DX)
call SetUnitY(u, udg_K2DY)
set udg_K2DLastX[i] = udg_K2DX
set udg_K2DLastY[i] = udg_K2DY
if udg_K2DFXModel[i] != "" then
set udg_K2DFXTimeLeft[i] = udg_K2DFXTimeLeft[i] - udg_K2DTimeout
if udg_K2DFXTimeLeft[i] <= 0.00 then
set udg_K2DFXTimeLeft[i] = udg_K2DFXRate[i]
if udg_K2DFlying[i] then
call DestroyEffect(AddSpecialEffectTarget(udg_K2DFXModel[i], u, "origin"))
else
call DestroyEffect(AddSpecialEffect(udg_K2DFXModel[i], udg_K2DX, udg_K2DY))
endif
endif
endif
if udg_K2DCollision[i] >= 0.00 then
set udg_Knockback2DSource = u
call GroupEnumUnitsInRange(bj_lastCreatedGroup, udg_K2DX, udg_K2DY, 200.00, null)
call GroupRemoveUnit(bj_lastCreatedGroup, u)
loop
set udg_Knockback2DUnit = FirstOfGroup(bj_lastCreatedGroup)
exitwhen udg_Knockback2DUnit == null
call GroupRemoveUnit(bj_lastCreatedGroup, udg_Knockback2DUnit)
if IsUnitInRange(udg_Knockback2DUnit, u, udg_K2DCollision[i]) and udg_K2DFlying[i] == IsUnitType(udg_Knockback2DUnit, UNIT_TYPE_FLYING) and (not IsUnitType(udg_Knockback2DUnit, UNIT_TYPE_STRUCTURE)) and not IsUnitType(udg_Knockback2DUnit, UNIT_TYPE_DEAD) and (udg_K2DUnbiasedCollision[i] or IsUnitAlly(udg_Knockback2DUnit, GetOwningPlayer(u))) and TriggerEvaluate(gg_trg_Knockback_2D) then
set udg_Knockback2DAngle = bj_RADTODEG * Atan2(GetUnitY(udg_Knockback2DUnit) - udg_K2DY, GetUnitX(udg_Knockback2DUnit) - udg_K2DX)
set udg_Knockback2DDistance = udg_K2DDistanceLeft[i]
set udg_Knockback2DBounces = udg_K2DBounce[i]
set udg_Knockback2DCollision = udg_K2DCollision[i]
if udg_K2DHeight[i] != 0.00 then
set udg_Knockback2DHeight = GetUnitFlyHeight(u) - GetUnitDefaultFlyHeight(u)
endif
set udg_Knockback2DLoopFX = udg_K2DFXModel[I]
set udg_Knockback2DTime = udg_K2DTimeLeft[i]
set udg_Knockback2DUnbiasedCollision = udg_K2DUnbiasedCollision[i]
call TriggerExecute(gg_trg_Knockback_2D)
set udg_Knockback2DSource = u //in case of a recursive knockback
endif
endloop
endif
set udg_K2DVelocity[i] = udg_K2DVelocity[i] - udg_K2DFriction[i]
else
call TriggerExecute(gg_trg_Knockback_2D_Destroy)
endif
endloop
set u = null
//Disable dummy after the loop finishes so it doesn't interfere with the map
call PauseUnit(udg_K2DDebrisKiller, true)
endfunction
//===========================================================================
function StartKnockback2DTimer takes nothing returns nothing
call TimerStart(udg_K2DTimer, udg_K2DTimeout, true, function Knockback2DLooper)
endfunction
function InitTrig_Knockback_2D_System takes nothing returns nothing
endfunction
```