Commit graph

217 commits

Author SHA1 Message Date
Christoph Oelckers
4fa5055548 - fixed: With some functions moved to Weapon, Dehacked needs to check Weapon, not StateProvider to find its code pointers. 2017-01-20 17:23:13 +01:00
Christoph Oelckers
3c30b59bab more inventory scriptification
* completely scriptified DehackedPickup and FakeInventory.
* scriptified all remaining virtual functions of Inventory, so that its inheritance is now 100% script-side.
* scriptified CallTryPickup and most of the code called by that.

- fixed: Passing local variables by reference did not work in the VM.
2017-01-19 23:42:12 +01:00
Christoph Oelckers
1750ded7c4 - more exporting of AInventory. 2017-01-19 20:56:31 +01:00
Christoph Oelckers
8256f25a84 - no need to keep AArmor native, now that all child classes have been scriptified. 2017-01-18 23:46:19 +01:00
Christoph Oelckers
3148496f57 - scriptified BasicArmor and fixed a few errors in the conversion. 2017-01-18 22:15:48 +01:00
Christoph Oelckers
2dd6fb9595 - scriptified BasicArmorBonus. 2017-01-18 20:23:13 +01:00
Christoph Oelckers
30a8541a15 - scriptified the weapon piece functions.
- fixed: ClearInventory did not process depleted items properly.
- changed HexenArmor from UNDROPPABLE to UNTOSSABLE because this allowed to remove some special handling in ClearInventory. The only other place which checks this flag also checks UNTOSSABLE.
2017-01-18 17:26:12 +01:00
Christoph Oelckers
d9fd2d509f - scriptified the remains of AAmmo. 2017-01-18 14:18:17 +01:00
Christoph Oelckers
534b2ebbfb - scriptified the remains of APowerup.
- ensure that actor defaults contain a valid virtual table and class pointer so that they can actually use virtual and class-dependent method functions. This is needed for retrieving script variables from them.
2017-01-18 10:33:03 +01:00
Christoph Oelckers
14f2c39e58 - scriptified cht_Give and cht_Take and made them virtual function of PlayerPawn so that this can be better configured for mods that want other options in here.
- improved the class pointer to string cast to print the actual type it describes and not the class pointer's own type.
- fixed: The 'is' operator created non-working code when checking the inheritance of a class pointer, it only worked for objects.
2017-01-17 17:34:39 +01:00
Christoph Oelckers
03c7b10fd6 - fully scriptified HealthPickup. 2017-01-15 18:46:40 +01:00
Christoph Oelckers
179b6e1a39 - added property definitions to the ZScript parser. This will allow defining custom properties for the default block in custom base classes. See 'Health' for an example.
- support transient object member variables for information that does not need to be put in a savegame.
- fixed: special initialization of objects needs to pass the proper defaults along, otherwise the parent classes will use their own, inappropriate one.
2017-01-15 16:55:30 +01:00
Christoph Oelckers
7b7623d2c4 - split DObject::Destroy into the main method, a native OnDestroy and a scripted OnDestroy method and made the main method non-virtual
This was done to ensure it can be properly overridden in scripts without causing problems when called during engine shutdown for the type and symbol objects the VM needs to work and to have the scripted version always run first.
Since the scripted OnDestroy method never calls the native version - the native one is run after the scripted one - this can be simply skipped over during shutdown.
2017-01-12 22:49:18 +01:00
Christoph Oelckers
23482735a0 - removed PClassAmmo.
No need to maintain these clunky meta class for one single property. The overhead the mere existence of this class creates is far more than 100 spawned ammo items would cost.
There is no need to serialize AAmmo::DropAmount, this value has no meaning on an already spawned item.
2017-01-12 11:44:33 +01:00
Christoph Oelckers
4be9222646 - fixed: Dehacked must flag all states it touched for use in weapons. 2017-01-04 11:13:19 +01:00
Christoph Oelckers
b132782c49 - scriptified PowerBuddha and PowerFrightener. 2017-01-03 21:03:05 +01:00
Christoph Oelckers
05cc3dde72 - fixed: Dehacked did not copy the defaults for DehackedPickup replacements anymore. 2016-12-02 01:33:18 +01:00
Christoph Oelckers
86544086df - allow the VM to run on one global stack per thread.
It is utterly pointless to require every function that wants to make a VM call to allocate a new stack first. The allocation overhead doubles the time to set up the call.
With one stack, previously allocated memory can be reused. The only important thing is, if this ever gets used in a multithreaded environment to have the stack being declared as thread_local, although for ZDoom this is of no consequence.

- eliminated all cases where native code was calling other native code through the VM interface. After scriptifying the game code, only 5 places were left which were quickly eliminated. This was mostly to ensure that the native VM function parameters do not need to be propagated further than absolutely necessary.
2016-11-30 17:15:01 +01:00
Christoph Oelckers
8a50004f55 - cleanup of the virtual function definitions for inventory items. Let's better use 'virtual' and 'override' everywhere to make sure that nothing gets overlooked.
- added call wrappers and script hooks for all relevant virtuals in AInventory.
- made GetSpeedFactor and GetNoTeleportFreeze entirely scripted because they are too trivial - also do them iteratively, just like HandlePickup, because it's just a better way to do this stuff.
2016-11-30 15:54:01 +01:00
Christoph Oelckers
b0f3121bec - split up zscript/shared/inventory.txt.
- moved health items to their own file.
- scriptified ScoreItem and MapRevealer whose entire functionality was a small TryPickup method.
- fixed: bit fields in global variables were not correctly written.

This should conclude the inventory cleanup. It is now possible again to find things in there.
2016-11-30 13:36:13 +01:00
Christoph Oelckers
229c55ce61 - moved ammo to its own file, including the backpack.
- moved weapon declarations to their own header.
2016-11-30 12:24:50 +01:00
Christoph Oelckers
78fa076079 - moved armor class declarations to their own file and added necessary #includes only to those files actually using them.
- added copyright headers to a_armor.cpp and a_keys.cpp.
2016-11-30 10:55:03 +01:00
Christoph Oelckers
d2ce78fae7 - changed the return value of PickupMessage to an FString so that it can interface with scripts.
- use standard convention of prefacing localizable strings with "$" for C_MidPrint.
2016-11-28 16:19:01 +01:00
Christoph Oelckers
82e5e2daa9 - fixed a variable mixup in Dehacked weapon initialization.
This ultimately failed to set the weapon's AmmoUse field and made the weapon fail to detect it's out of ammo.
2016-11-25 12:31:13 +01:00
Christoph Oelckers
11ac0c622b - fixed: The BFG needs to get its default ammo usage from the DehInfo struct.
- fixed: State's fields need to be declared native.
2016-11-25 01:33:04 +01:00
Christoph Oelckers
66d28a24b8 - disabled the scripted virtual function module after finding out that it only works if each single class that may serve as a parent for scripting is explicitly declared.
Needless to say, this is simply too volatile and would require constant active maintenance, not to mention a huge amount of work up front to get going.
It also hid a nasty problem with the Destroy method. Due to the way the garbage collector works, Destroy cannot be exposed to scripts as-is. It may be called from scripts but it may not be overridden from scripts because the garbage collector can call this function after all data needed for calling a scripted override has already been destroyed because if that data is also being collected there is no guarantee that proper order of destruction is observed. So for now Destroy is just a normal native method to scripted classes
2016-11-25 00:25:26 +01:00
Christoph Oelckers
ab5c11064a - added a few missing tildes. 2016-11-22 13:03:46 +01:00
Christoph Oelckers
135cfcf016 - implemented State as an actual native struct, so that its fields can be accessed from scripts.
- refactored state bitfield members into a flag word because the address of a bitfield cannot be taken, making such variables inaccessible to scripts.
- actually use PNativeStruct for representing native structs defined in a script.
2016-11-21 21:34:34 +01:00
Christoph Oelckers
10bc01c000 - fixed yet another place where VS did not warn about improper use of NULL. 2016-11-19 09:10:31 +01:00
Christoph Oelckers
3ce699bf9b - implemented pass-by-reference arguments - so far only for memory based variables.
- changed Dehacked weapon function lookup to check the symbol table instead of directly referencing the VM functions. Once scriptified these pointers will no longer be available.
- removed all special ATAGs from the VM. While well intentioned any pointer tagged with them is basically unusable because it'd trigger asserts all over the place.
- scriptified A_Punch for testing pass-by-reference parameters and stack variables.
2016-11-19 01:23:56 +01:00
Christoph Oelckers
d86f03e2e0 - reverted most of the last commit after realizing that trying to manage constructing/destructing per variable is not going to work because it'd require some extensive exception management in the compiled VM code.
- instead add a list of SpecialInits to VMScriptFunction so this can be done transparently when setting up and popping the stack frame. The only drawback is that this requires permanent allocation of stack objects for the entire lifetime of a function but this is a relatively small tradeoff for significantly reduced maintenance work throughout.
- removed most #include "vm.h", because nearly all files already pull this in through dobject.h.
2016-11-17 13:10:19 +01:00
Christoph Oelckers
633da6e5d8 - scriptified two of the Acolyte's functions.
- added a DActorIterator class.
- fixed: It was not possible to have functions of the same name in two different classes because the name they were searched for was not qualified by the class. Changed so that the class name is included now, but to avoid renaming several hundreds of functions all at once, if the search fails, it will repeat with 'Actor' as class name.

This commit contains preparations for scriptifying Hexen's Dragon, but that doesn't work yet so it's not included.
2016-11-16 01:36:21 +01:00
Christoph Oelckers
ac86a535e7 - fixed: State labels were resolved in the calling function's context instead of the called function one's.
This could cause problems with functions that take states as parameters but use them to set them internally instead of passing them through the A_Jump interface back to the caller, like A_Chase or A_LookEx.
This required some quite significant refactoring because the entire state resolution logic had been baked into the compiler which turned out to be a major maintenance problem.
Fixed this by adding a new builtin type 'statelabel'. This is an opaque identifier representing a state, with the actual data either directly encoded into the number for single label state or an index into a state information table.
The state resolution is now the task of the called function as it should always have remained. Note, that this required giving back the 'action' qualifier to most state jumping functions.

- refactored most A_Jump checkers to a two stage setup with a pure checker that returns a boolean and a scripted A_Jump wrapper, for some simpler checks the checker function was entirely omitted and calculated inline in the A_Jump function. It is strongly recommended to use the boolean checkers unless using an inline function invocation in a state as they lead to vastly clearer code and offer more flexibility.

- let Min() and Max() use the OP_MIN and OP_MAX opcodes. Although these were present, these function were implemented using some grossly inefficient branching tests.
- the DECORATE 'state' cast kludge will now actually call ResolveState because a state label is not a state and needs conversion.
2016-11-14 14:12:27 +01:00
Christoph Oelckers
72e77a6c65 - implemented handling for virtual function.
Syntax-wise I chose to make it as strict as possible to reduce the chance of errors: Virtual base functions must be declared with the 'virtual' keyword, and overrides in child classes with the 'override' keyword. This way any mismatch in parameters that otherwise would cause silent failure will outright produce a compile error.
2016-11-11 20:05:07 +01:00
Leonard2
7dbc4710f1 Add the new argument to all uses of the implement macro 2016-11-09 17:45:55 +01:00
Leonard2
bb2d61de50 Replaced the many implement macros with a single one that takes arguments instead 2016-11-09 17:45:53 +01:00
Leonard2
0b3585c83f Separate the pointer list from the implement macro 2016-11-09 17:45:52 +01:00
Christoph Oelckers
e620c9bd7d - scriptified parts of a_bossbrain.cpp. Some things cannot be done yet, the script code is there but commented out.
- exported thinker iterator and drop item chain to scripting. Unlike its native counterpart the script-side iterator is wrapped into a DObject to allow proper handling for memory management.
- fixed: The VMFunctionBuilder only distinguished between member and action functions but failed on static ones.
- fixed: FxAssign did not add all needed type casts. Except for purely numeric types it will now wrap the expression in an FxTypeCast. Numeric handling remains unchanged for both performance reasons and not altering semantics for DECORATE.
- exported all internal flags as variables to scripting. They still cannot be used in an actor definition.
- make ATAG_STATE the same as ATAG_GENERIC. Since state pointers exist as actual variables they can take both values which on occasion can trigger some asserts.
- gave PClass a bExported flag, so that scripts cannot see purely internal classes. Especially the types like PInt can cause problems.

Todo: we need readonly references to safely expose the actor defaults. Right now some badly behaving code could overwrite them.
2016-10-31 17:03:26 +01:00
Christoph Oelckers
f8ccda2dc8 - scriptified A_Mushroom to test something a bit more complex.
- fixed: FxMinusSign trashed local variables that were used with negation.
- fixed: FxConditional only handled ints and floats, but not pointers and strings.
- fixed: A 'no states in non-actors' error was triggered, even for classes without any states.
2016-10-30 14:00:11 +01:00
Christoph Oelckers
e50315bd31 - fixed: Deprecation messages should never appear in DECORATE.
- removed some console message spam.
2016-10-26 13:22:36 +02:00
Christoph Oelckers
37914223f0 - reviewed all places where VARF_Action and NAP were used and fixed what was still wrong. 2016-10-22 18:24:47 +02:00
Christoph Oelckers
32ac1a8ad7 - moved the special weapon functions from Inventory to StateProvider.
This will restrict them to the only classes that may use them: Weapon and CustomInventory.
Note: Should a mod surface which uses them improperly the better solution would be a warning message and NULLing the bogus code pointer instead of leaving them in Inventory.
2016-10-22 16:46:47 +02:00
Christoph Oelckers
d714670acc - allow calling non-action functions directly from a state.
Ironically this only requires a very minor change in the calling code and an added member for the VMFunction to tell that code how many parameters to pass.
This change will allow to turn the vast majority of action functions into regular members, the only ones that still need to be an action function are the few that actually use the pointers.
2016-10-22 16:35:48 +02:00
Christoph Oelckers
db8ab1bc4a - give PFunction a bit more information:
* explicitly require passing the owning class when creating it.
 * extract self pointer class when adding a variant.
 * put the flags on the single variants, we can not fully rule out that they will be 100% identical, if variants ever get allowed.
2016-10-15 15:50:45 +02:00
Christoph Oelckers
a72fbb771f - separated the code generation from the DECORATE parser and cleaned up the interface to the code generator. Most importantly, the VMScriptFunctions are now preallocated when being added to the list of functions to compile and will be filled in later by the code generator. This allowed the removal of some ugly maintenance code. 2016-10-13 00:53:59 +02:00
Christoph Oelckers
b1a83bfd26 - started with cleanup and separation of DECORATE code.
* everything related to scripting is now placed in a subdirectory 'scripting', which itself is separated into DECORATE, ZSCRIPT, the VM and code generation.
 * a few items have been moved to different headers so that the DECORATE parser definitions can mostly be kept local. The only exception at the moment is the flags interface on which 3 source files depend.
2016-10-12 19:22:33 +02:00
Christoph Oelckers
6a8ab9a4d3 - implemented the state compiler. So far all it can handle is parameter-less functions.
To do the rest, some cleanup is needed first, to untangle the DECORATE parser from the actual code generation so that the low end stuff can actually be reused here instead of having to be redone.
2016-10-12 17:50:23 +02:00
Christoph Oelckers
d819aafcf3 - changed handling of duplicate classes in DECORATE.
Instead of replacing the original, the second class will get renamed now, using the originating file as an identifier. In the vast majority of cases this should do exactly what is needed: Create an unconflicting second class that can coexist with the original. Unless the class is used by name this should eliminate all problems with this, but so far I haven't seen anything that used them by name.

This is choosing the lesser of two evils. While some mod out there may get broken, the old setup meant that the first class of a given name could not be written out to a savegame because it was not retrievable when loading it back.
2016-10-07 15:28:25 +02:00
Christoph Oelckers
88eab9d1f9 - And another batch of serializers. 2016-09-19 15:07:53 +02:00
Christoph Oelckers
f1ba19073f - split Damage into two variables: DamageVal for the old constant and DamageFunc for the DECORATE function.
The way this was done was a major headache inducer, requiring reconstruction of the function each time the value was changed and in general made actor damage a major hassle.
There was a DECORATE wrapper to mimic the original behavior but this looked quite broken because it completely ignored the different semantics of both damage calculation types.
It also made it impossible to determine if damage was a function or a value.
This accessor has been reverted to what it should be, only returning the constant, which now is -1 for a damage function. I am sorry if this may break the odd mod out but a quick look over some DECORATE-heavy stuff showed that this was never combined in any of them so that accessing 'damage' in DECORATE code depended on an actual damage function.

To get proper damage, a future commit will add a DECORATE function which calls AActor::GetMissileDamage.
2016-09-19 03:36:51 +02:00