Remove FindSDL2 find-module, use sdl2-config.cmake instead
This requires SDL >= 2.0.4.
Since <https://bugzilla.libsdl.org/show_bug.cgi?id=2464> was fixed in
SDL 2.0.4, SDL behaves as a CMake "config-file package", even if it was
not itself built using CMake: it installs a sdl2-config.cmake file to
${libdir}/cmake/SDL2, which tells CMake where to find SDL's headers and
library, analogous to a pkg-config .pc file.
As a result, we no longer need to copy/paste a "find-module package"
to be able to find a system copy of SDL >= 2.0.4 with find_package(SDL2).
Find-module packages are now discouraged by the CMake developers, in
favour of having upstream projects behave as config-file packages.
This results in a small API change: FindSDL2 used to set SDL2_INCLUDE_DIR
and SDL2_LIBRARY, but the standard behaviour for config-file packages is
to set <name>_INCLUDE_DIRS and <name>_LIBRARIES. Use the CONFIG keyword
to make sure we search in config-file package mode, and will not find a
FindSDL2.cmake in some other directory that implements the old interface.
In addition to deleting redundant code, this avoids some assumptions in
FindSDL2 about the layout of a SDL installation. The current libsdl2-dev
package in Debian breaks those assumptions; this is considered a bug
and will hopefully be fixed soon, but it illustrates how fragile these
assumptions can be. We can be more robust against different installation
layouts by relying on SDL's own CMake integration.
When linking to a copy of CMake in a non-standard location, users can
now set the SDL2_DIR or CMAKE_PREFIX_PATH environment variable to point
to it; previously, these users would have used the SDL2DIR environment
variable. This continues to be unnecessary if using matching system-wide
installations of CMake and SDL2, for example both from Debian.
--[[ Stuck Cake Test
In this test, 2 hedgehogs are placed very close to each other, tightly
crammed between girders. The first hog (Cake Hog) launches a cake. Now
the test waits until the cake explodes due to time.
The cake must not take too long or forever to explode. The test succeeds
if the cake explodes before CAKE_MAX_EXPLOSION_TIME ticks (rough estimate)
after the cake spawned and fails otherwise.
This test case has been written in response to bug 194.
]]
-- Cake must explode before this many ticks for the test to succeed
local CAKE_MAX_EXPLOSION_TIME = 15000
-- Give up if cake is still running after this many ticks
local CAKE_GIVE_UP_TIME = 20000
local hhs = {}
function onGameInit()
ClearGameFlags()
EnableGameFlags(gfDisableWind, gfPerHogAmmo, gfOneClanMode, gfInvulnerable, gfSolidLand)
Map = ""
Seed = "{84f5e62e-6a12-4444-b53c-2bc62cfd9c62}"
Theme = "Cave"
MapGen = mgDrawn
MapFeatureSize = 12
TemplateFilter = 3
TemplateNumber = 0
TurnTime = 9999000
Explosives = 0
MinesNum = 0
CaseFreq = 0
WaterRise = 0
HealthDecrease = 0
Ready = 0
------ TEAM LIST ------
AddTeam("Test Team", 0xFFFF02, "Statue", "Tank", "Default", "cm_test")
hhs[1] = AddHog("Cake Hog", 0, 100, "NoHat")
SetGearPosition(hhs[1], 771, 1344)
hhs[2] = AddHog("Passive Hog", 0, 100, "NoHat")
SetGearPosition(hhs[2], 772, 1344)
HogTurnLeft(hhs[2], true)
end
function onAmmoStoreInit()
SetAmmo(amCake, 9, 0, 0, 0)
SetAmmo(amSkip, 9, 0, 0, 0)
end
function onGameStart()
PlaceSprite(784, 1361, sprAmGirder, 4, 0xFFFFFFFF, nil, nil, nil, lfNormal)
PlaceSprite(730, 1271, sprAmGirder, 6, 0xFFFFFFFF, nil, nil, nil, lfNormal)
PlaceSprite(753, 1270, sprAmGirder, 6, 0xFFFFFFFF, nil, nil, nil, lfNormal)
PlaceSprite(798, 1271, sprAmGirder, 6, 0xFFFFFFFF, nil, nil, nil, lfNormal)
PlaceSprite(777, 1243, sprAmGirder, 6, 0xFFFFFFFF, nil, nil, nil, lfNormal)
end
local cakeTestPhase = 0
--[[ Test phases:
0: Waiting for turn start
1: Cake selected, waiting for attack
2: Cake gear added
3: Cake gead destroyed ]]
function onNewTurn()
if cakeTestPhase == 0 then
SetWeapon(amCake)
cakeTestPhase = 1
end
end
local cakeTicks = 0
function onGearAdd(gear)
if GetGearType(gear) == gtCake then
cakeTestPhase = 2
end
end
function onGearDelete(gear)
if GetGearType(gear) == gtCake and cakeTestPhase == 2 then
WriteLnToConsole(string.format("TEST: The cake exploded after %d ticks.", cakeTicks))
cakeTestPhase = 3
if cakeTicks > CAKE_MAX_EXPLOSION_TIME then
WriteLnToConsole("TEST RESULT: Failed because cake took too long to explode.")
EndLuaTest(TEST_FAILED)
else
WriteLnToConsole("TEST RESULT: Succeeded because cake exploded in time.")
EndLuaTest(TEST_SUCCESSFUL)
end
end
end
function onGameTick()
if cakeTestPhase == 1 then
ParseCommand("+attack")
elseif cakeTestPhase == 2 then
cakeTicks = cakeTicks + 1
if cakeTicks > CAKE_GIVE_UP_TIME then
WriteLnToConsole(string.format("TEST RESULT: Failed because the cake still didn't explode after %d ticks.", CAKE_GIVE_UP_TIME))
cakeTestPhase = 3
EndLuaTest(TEST_FAILED)
end
end
end