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BGE patch: KX_STATEx constant to allow simple state manipulation in setState()

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The constants KX_STATE1 to KX_STATE30 can be used 
with setState() to change the object state in a 
python controller. The constants are defined in the 
GameLogic module so that the full name is 
GameLogic.KX_STATE1 to GameLogic.KX_STATE30 but you
can simplify this with the import statement:

from GameLogic import *
cont = getCurrentController()
ob = cont.getOwner()
ob.setState(KX_STATE2)		#go to state 2

KX_STATEx constants are defined as (1<<(x-1))
Binary operators |, &, ^ and ~ can be used to combine states:

You can activate more than one state at a time with the | operator:

ob.setState(KX_STATE1|KX_STATE2)  #activate state 1 and 2, stop all others

You can add a state to the current state mask with:

state = ob.getState()
ob.setState(state|KX_STATE3)      #activate state 3, keep others

You can substract a state to the current state mask with the & and operator:

state = ob.getState()
ob.setState(state&~KX_STATE2)     #stop state 2, keep others

You can invert a state with the ^ operator:

state = ob.getState()
ob.setState(state^KX_STATE2)     #invert state 2, keep others
This commit is contained in:
Benoit Bolsee 2008-09-22 19:54:30 +00:00
parent eef475ac7e
commit 9b4956ae22
1 changed files with 32 additions and 0 deletions
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32
source/gameengine/Ketsji/KX_PythonInit.cpp
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@ -975,6 +975,38 @@ PyObject* initGameLogic(KX_KetsjiEngine *engine, KX_Scene* scene) // quick hack
KX_MACRO_addTypesToDict(d, CAM_POS, BL_Shader::CAM_POS);
KX_MACRO_addTypesToDict(d, CONSTANT_TIMER, BL_Shader::CONSTANT_TIMER);
/* 10 state actuator */
KX_MACRO_addTypesToDict(d, KX_STATE1, (1<<0));
KX_MACRO_addTypesToDict(d, KX_STATE2, (1<<1));
KX_MACRO_addTypesToDict(d, KX_STATE3, (1<<2));
KX_MACRO_addTypesToDict(d, KX_STATE4, (1<<3));
KX_MACRO_addTypesToDict(d, KX_STATE5, (1<<4));
KX_MACRO_addTypesToDict(d, KX_STATE6, (1<<5));
KX_MACRO_addTypesToDict(d, KX_STATE7, (1<<6));
KX_MACRO_addTypesToDict(d, KX_STATE8, (1<<7));
KX_MACRO_addTypesToDict(d, KX_STATE9, (1<<8));
KX_MACRO_addTypesToDict(d, KX_STATE10, (1<<9));
KX_MACRO_addTypesToDict(d, KX_STATE11, (1<<10));
KX_MACRO_addTypesToDict(d, KX_STATE12, (1<<11));
KX_MACRO_addTypesToDict(d, KX_STATE13, (1<<12));
KX_MACRO_addTypesToDict(d, KX_STATE14, (1<<13));
KX_MACRO_addTypesToDict(d, KX_STATE15, (1<<14));
KX_MACRO_addTypesToDict(d, KX_STATE16, (1<<15));
KX_MACRO_addTypesToDict(d, KX_STATE17, (1<<16));
KX_MACRO_addTypesToDict(d, KX_STATE18, (1<<17));
KX_MACRO_addTypesToDict(d, KX_STATE19, (1<<18));
KX_MACRO_addTypesToDict(d, KX_STATE20, (1<<19));
KX_MACRO_addTypesToDict(d, KX_STATE21, (1<<20));
KX_MACRO_addTypesToDict(d, KX_STATE22, (1<<21));
KX_MACRO_addTypesToDict(d, KX_STATE23, (1<<22));
KX_MACRO_addTypesToDict(d, KX_STATE24, (1<<23));
KX_MACRO_addTypesToDict(d, KX_STATE25, (1<<24));
KX_MACRO_addTypesToDict(d, KX_STATE26, (1<<25));
KX_MACRO_addTypesToDict(d, KX_STATE27, (1<<26));
KX_MACRO_addTypesToDict(d, KX_STATE28, (1<<27));
KX_MACRO_addTypesToDict(d, KX_STATE29, (1<<28));
KX_MACRO_addTypesToDict(d, KX_STATE30, (1<<29));
// Check for errors
if (PyErr_Occurred())
{