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Add ammo/charges opcodes 

See #200
This commit is contained in:
Alexander Batalov 2022-11-07 20:41:33 +03:00
parent 393d89f8c4
commit 19bcfebe0d
1 changed files with 72 additions and 0 deletions
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72
src/sfall_opcodes.cc
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@ -3,6 +3,7 @@
#include "art.h"
#include "interface.h"
#include "interpreter.h"
#include "item.h"
#include "mouse.h"
#include "svga.h"
@ -14,6 +15,74 @@ static void opGetCurrentHand(Program* program)
programStackPushInteger(program, interfaceGetCurrentHand());
}
// get_weapon_ammo_pid
static void opGetWeaponAmmoPid(Program* program)
{
Object* obj = static_cast<Object*>(programStackPopPointer(program));
int pid = -1;
if (obj != nullptr) {
if (PID_TYPE(obj->pid) == OBJ_TYPE_ITEM) {
switch (itemGetType(obj)) {
case ITEM_TYPE_WEAPON:
pid = weaponGetAmmoTypePid(obj);
break;
case ITEM_TYPE_MISC:
pid = miscItemGetPowerTypePid(obj);
break;
}
}
}
programStackPushInteger(program, pid);
}
// get_weapon_ammo_count
static void opGetWeaponAmmoCount(Program* program)
{
Object* obj = static_cast<Object*>(programStackPopPointer(program));
// CE: Implementation is different.
int ammoQuantityOrCharges = 0;
if (obj != nullptr) {
if (PID_TYPE(obj->pid) == OBJ_TYPE_ITEM) {
switch (itemGetType(obj)) {
case ITEM_TYPE_AMMO:
case ITEM_TYPE_WEAPON:
ammoQuantityOrCharges = ammoGetQuantity(obj);
break;
case ITEM_TYPE_MISC:
ammoQuantityOrCharges = miscItemGetCharges(obj);
break;
}
}
}
programStackPushInteger(program, ammoQuantityOrCharges);
}
// set_weapon_ammo_count
static void opSetWeaponAmmoCount(Program* program)
{
int ammoQuantityOrCharges = programStackPopInteger(program);
Object* obj = static_cast<Object*>(programStackPopPointer(program));
// CE: Implementation is different.
if (obj != nullptr) {
if (PID_TYPE(obj->pid) == OBJ_TYPE_ITEM) {
switch (itemGetType(obj)) {
case ITEM_TYPE_AMMO:
case ITEM_TYPE_WEAPON:
ammoSetQuantity(obj, ammoQuantityOrCharges);
break;
case ITEM_TYPE_MISC:
miscItemSetCharges(obj, ammoQuantityOrCharges);
break;
}
}
}
}
// get_mouse_x
static void opGetMouseX(Program* program)
{
@ -80,6 +149,9 @@ static void opArtExists(Program* program)
void sfallOpcodesInit()
{
interpreterRegisterOpcode(0x8193, opGetCurrentHand);
interpreterRegisterOpcode(0x8217, opGetWeaponAmmoPid);
interpreterRegisterOpcode(0x8219, opGetWeaponAmmoCount);
interpreterRegisterOpcode(0x821A, opSetWeaponAmmoCount);
interpreterRegisterOpcode(0x821C, opGetMouseX);
interpreterRegisterOpcode(0x821D, opGetMouseY);
interpreterRegisterOpcode(0x8220, opGetScreenWidth);