vn/code/vn_scene2.md

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@table(Op, Desc) scene2_opcode_table:
{
{ None, "does nothing (effectivly a nop)" },
// sixten: interfacing with user
{ Call, "stages runtime hook" },
{ Wait, "executes staged actions and waits for user input" },
// sixten: stack manipulation
{ Pop, "pops object from stack" },
{ PushBool, "pushes a boolean onto the stack" },
{ PushNumber, "pushes a number onto the stack" },
{ PushString, "pushes a string onto the stack" },
{ PushNil, "pushes `nil` onto the stack" },
{ PushVariable, "pushes a variable onto the stack" },
{ DuplicateStack, "duplicates the top N-most elements of the stack (specified in Arg as u64)" },
// sixten: variables
{ SetVariable, "pops the stack and stores the value in a variable" },
{ SetLocal, "defines a locally scoped variable" },
// sixten: blocks
{ BeginBlock, "increases the variable stack depth" },
{ EndBlock, "decreases the variable stack depth" },
// sixten: jumps
{ Jump, "performs a relative jump (specified in Arg as s64)" },
{ CondJump, "performs a relative jump (specified in Arg as s64) if the topmost element on the stack is non-zero" },
// sixten: operations
{ Add, "adds the two topmost elements of the stack" },
{ Subtract, "subtracts the topmost element of the stack by the second topmost element" },
{ Multiply, "multiplies the two topmost elements of the stack" },
{ Divide, "divides the topmost element of the stack by the second topmost element" },
{ Equals, "" },
{ Greater, "" },
{ Less, "" },
{ Not, "performs a not operation on the topmost element of the stack" },
{ Negate, "negates the topmost element of the stack" },
}
@table(Name, Operator) scene2_operator_table:
{
{ Invalid, "###" }
{ Not, "!" }
{ Equal, "=" }
{ Equals, "==" }
{ NotEquals, "!=" }
{ GreaterThanOrEquals, ">=" }
{ LessThanOrEquals, "<=" }
{ Greater, ">" }
{ Less, "<" }
{ Add, "+" }
{ Minus, "-" }
{ Multiply "*" }
{ Divide, "/" }
}
@table(Name, Binding, Desc) scene2_call_table:
{
{ none, S2_Call_Stub, "does nothing" },
// sixten: debugging
{ stack_sanity, S2_Call_StackSanity, "does checks that the stack is at a certain depth" },
// sixten: textbox management calls
{ text_append, S2_Call_TextAppend, "pops a value and appends it to the textbox" },
{ text_newline, S2_Call_NewLine, "appends a newline to the textbox" },
{ text_clear, S2_Call_TextClear, "clears the textbox" },
// sixten: proc management calls
{ proc_set, S2_Call_ProcSet, "sets the current proc" },
// sixten: character management calls
{ ctr_set, S2_Call_CharacterSet, "sets the state of a character" },
{ ctr_remove, S2_Call_CharacterRemove, "removes a character" },
{ ctr_set_talking, S2_Call_CharacterSetTalking, "makes a character talking" },
{ ctr_unset_all_talking, S2_Call_CharacterUnsetAllTalking, "makes no characters talking" },
}
@table_gen
{
`enum scene2_opcode`;
`{`;
@expand(scene2_opcode_table s) `S2_Op_$(s.Op), $(=>50) // $(s.Desc)`;
`S2_Op_COUNT,`
`};`;
}
@table_gen
{
`global read_only string S2_InstructionInfoLookup[] =`;
`{`;
@expand(scene2_opcode_table s) `StrComp("$(s.Op)"),`;
`};`;
}
@table_gen
{
`global read_only string S2_InstructionNameLookup[] =`;
`{`;
@expand(scene2_opcode_table s) `StrComp("$(s.Desc)"),`;
`};`;
}
@table_gen
{
`enum scene2_operator`;
`{`;
@expand(scene2_operator_table s) `S2_Operator_$(s.Name),`;
`};`;
}
@table_gen
{
`inline scene2_operator S2_OperatorFromString(string String)`;
`{`;
`scene2_operator Result = S2_Operator_Invalid;`;
`if(0) {}`;
@expand(scene2_operator_table s) `else if(AreEqual(String, StrLit("$(s.Operator)")))$(=>40) { Result = S2_Operator_$(s.Name); }`;
`return(Result);`;
`}`;
}
@table_gen
{
@expand(scene2_call_table s) `static S2_CALL_FUNCTION($(s.Binding)); $(=>50) // $(s.Desc)`;
}
@table_gen
{
`global read_only scene2_call_function *S2_CallBindingLookup[] =`;
`{`;
@expand(scene2_call_table s) `$(s.Binding), `;
`};`;
}
@table_gen
{
`global read_only string S2_CallNameLookup[] =`;
`{`;
@expand(scene2_call_table s) `StrComp("$(s.Name)"), `;
`};`;
}