ACS PCodes
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The following is a list of ACS 
p-code.
| # | PCode | Arguments | Stack Offset | Extension | Description |
|---|---|---|---|---|---|
| 0 | NOP | 0 | 0 | Hexen | Does nothing. |
| 1 | TERMINATE | 0 | 0 | Hexen | Finishes the current script. |
| 2 | SUSPEND | 0 | 0 | Hexen | Holds the execution of the script until it is executed again, at which point it will resume. |
| 3 | PUSHNUMBER | 1 | 1 | Hexen | Pushes an integer onto the stack. |
| 4 | LSPEC1 | 1 | -1 | Hexen | Executes the line special, popping one argument from the stack. |
| 5 | LSPEC2 | 1 | -2 | Hexen | Executes the line special, popping two arguments from the stack. |
| 6 | LSPEC3 | 1 | -3 | Hexen | Executes the line special, popping three arguments from the stack. |
| 7 | LSPEC4 | 1 | -4 | Hexen | Executes the line special, popping four arguments from the stack. |
| 8 | LSPEC5 | 1 | -5 | Hexen | Executes the line special, popping five arguments from the stack. |
| 9 | LSPEC1DIRECT | 2 | 0 | Hexen | Executes the line special given by the first argument with a constant parameter given by the second argument. |
| 10 | LSPEC2DIRECT | 3 | 0 | Hexen | Executes the line special given by the first argument with two constant parameters given by the rest of the arguments. |
| 11 | LSPEC3DIRECT | 4 | 0 | Hexen | Executes the line special given by the first argument with three constant parameters given by the rest of the arguments. |
| 12 | LSPEC4DIRECT | 5 | 0 | Hexen | Executes the line special given by the first argument with four constant parameters given by the rest of the arguments. |
| 13 | LSPEC5DIRECT | 6 | 0 | Hexen | Executes the line special given by the first argument with five constant parameters given by the rest of the arguments. |
| 14 | ADD | 0 | -1 | Hexen | Pops two integers from the stack, adds them, and pushes the result. |
| 15 | SUBTRACT | 0 | -1 | Hexen | Pops two integers from the stack, subtracts them, and pushes the result. |
| 16 | MULTIPLY | 0 | -1 | Hexen | Pops two integers from the stack, multiplies them, and pushes the result. |
| 17 | DIVIDE | 0 | -1 | Hexen | Pops two integers from the stack, divides them, and pushes the result. Division by zero causes an error. |
| 18 | MODULUS | 0 | -1 | Hexen | Pops two integers from the stack, divides them, and pushes the remainder. Division by zero causes an error. |
| 19 | EQ | 0 | -1 | Hexen | Pops two integers from the stack and compares them for equality. If they are equal, a 1 is pushed to the stack, otherwise 0. |
| 20 | NE | 0 | -1 | Hexen | Pops two integers from the stack and compares them for inequality. If they are not equal, a 1 is pushed to the stack, otherwise 0. |
| 21 | LT | 0 | -1 | Hexen | Pops two integers from the stack and compares the second popped number to the first. If the second number is less than the first, a 1 is pushed to the stack, otherwise 0. |
| 22 | GT | 0 | -1 | Hexen | Pops two integers from the stack and compares the second popped number to the first. If the second number is greater than the first, a 1 is pushed to the stack, otherwise 0. |
| 23 | LE | 0 | -1 | Hexen | Pops two integers from the stack and compares the second popped number to the first. If the second number is less than or equal to the first, a 1 is pushed to the stack, otherwise 0. |
| 24 | GE | 0 | -1 | Hexen | Pops two integers from the stack and compares the second popped number to the first. If the second number is greater than or equal to the first, a 1 is pushed to the stack, otherwise 0. |
| 25 | ASSIGNSCRIPTVAR | 1 | -1 | Hexen | Pops an integer from the stack and assigns it to a local variable specified as the argument. |
| 26 | ASSIGNMAPVAR | 1 | -1 | Hexen | Pops an integer from the stack and assigns it to a map variable specified as the argument. |
| 27 | ASSIGNWORLDVAR | 1 | -1 | Hexen | Pops an integer from the stack and assigns it to a world variable specified as the argument. |
| 28 | PUSHSCRIPTVAR | 1 | 1 | Hexen | Pushes an integer from the local variable specified as the argument onto the stack. |
| 29 | PUSHMAPVAR | 1 | 1 | Hexen | Pushes an integer from the map variable specified as the argument onto the stack. |
| 30 | PUSHWORLDVAR | 1 | 1 | Hexen | Pushes an integer from the world variable specified as the argument onto the stack. |
| 31 | ADDSCRIPTVAR | 1 | -1 | Hexen | Pops an integer from the stack and adds it to the specified local variable. |
| 32 | ADDMAPVAR | 1 | -1 | Hexen | Pops an integer from the stack and adds it to the specified map variable. |
| 33 | ADDWORLDVAR | 1 | -1 | Hexen | Pops an integer from the stack and adds it to the specified world variable. |
| 34 | SUBSCRIPTVAR | 1 | -1 | Hexen | Pops an integer from the stack and subtracts it from the specified local variable. |
| 35 | SUBMAPVAR | 1 | -1 | Hexen | Pops an integer from the stack and subtracts it from the specified map variable. |
| 36 | SUBWORLDVAR | 1 | -1 | Hexen | Pops an integer from the stack and subtracts it from the specified world variable. |
| 37 | MULSCRIPTVAR | 1 | -1 | Hexen | Pops an integer from the stack and multiplies it with the specified local variable. |
| 38 | MULMAPVAR | 1 | -1 | Hexen | Pops an integer from the stack and multiplies it with the specified map variable. |
| 39 | MULWORLDVAR | 1 | -1 | Hexen | Pops an integer from the stack and multiplies it with the specified world variable. |
| 40 | DIVSCRIPTVAR | 1 | -1 | Hexen | Pops an integer from the stack and divides it from the specified local variable. Division by zero causes an error. |
| 41 | DIVMAPVAR | 1 | -1 | Hexen | Pops an integer from the stack and divides it from the specified map variable. Division by zero causes an error. |
| 42 | DIVWORLDVAR | 1 | -1 | Hexen | Pops an integer from the stack and divides it from the specified world variable. Division by zero causes an error. |
| 43 | MODSCRIPTVAR | 1 | -1 | Hexen | Pops an integer from the stack and divides it from the specified local variable, leaving the remainder in the variable. Division by zero causes an error. |
| 44 | MODMAPVAR | 1 | -1 | Hexen | Pops an integer from the stack and divides it from the specified map variable, leaving the remainder in the variable. Division by zero causes an error. |
| 45 | MODWORLDVAR | 1 | -1 | Hexen | Pops an integer from the stack and divides it from the specified world variable, leaving the remainder in the variable. Division by zero causes an error. |
| 46 | INCSCRIPTVAR | 1 | 0 | Hexen | Increments the specified local variable by 1. |
| 47 | INCMAPVAR | 1 | 0 | Hexen | Increments the specified map variable by 1. |
| 48 | INCWORLDVAR | 1 | 0 | Hexen | Increments the specified world variable by 1. |
| 49 | DECSCRIPTVAR | 1 | 0 | Hexen | Decrements the specified local variable by 1. |
| 50 | DECMAPVAR | 1 | 0 | Hexen | Decrements the specified map variable by 1. |
| 51 | DECWORLDVAR | 1 | 0 | Hexen | Decrements the specified world variable by 1. |
| 52 | GOTO | 1 | 0 | Hexen | Jumps to the specified offset in the script. |
| 53 | IFGOTO | 1 | -1 | Hexen | Pops an integer off the stack and jumps to the specified offset in the script if the popped number is not 0. |
| 54 | DROP | 0 | -1 | Hexen | Pops an item off the stack and discards it. |
| 55 | DELAY | 0 | -1 | Hexen | Pops an integer off the stack and delays the script by the popped number of tics. See: Delay. |
| 56 | DELAYDIRECT | 1 | 0 | Hexen | Delays the script by the number of tics specified by argument. See: Delay. |
| 57 | RANDOM | 0 | -1 | Hexen | Pops two numbers from the stack. A random number between those two popped numbers is then pushed to the stack. See: Random. |
| 58 | RANDOMDIRECT | 2 | 1 | Hexen | Push a random number between the two numbers specified as arguments to the stack. See: Random. |
... to be continued ...
CALLFUNC Functions
The CALLFUNC PCode references the following table to decide which function to call. All functions push a single return value to the stack, and thus must be dropped by hand if the return value is ignored.
| # | Function | Arguments | Return Type |
|---|---|---|---|
| 1 | GetLineUDMFInt | 2 | integer |
| 2 | GetLineUDMFFixed | 2 | fixed |
| 3 | GetThingUDMFInt | 2 | integer |
... to be continued ...
External links
- ACC++ repository — this article is sourced from /docs/manual.odt
