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ecs: unroll keyword

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This commit is contained in:
Steven Hugg 2022-02-19 15:39:44 -06:00
parent 3fe2a151da
commit 479c2f24b8
1 changed files with 7 additions and 3 deletions
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10
src/common/ecs/ecs.ts
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@ -72,7 +72,7 @@ export interface SystemInstance extends SourceLocated {
id: number;
}
export const SELECT_TYPE = ['once', 'foreach', 'join', 'with', 'if', 'select'] as const;
export const SELECT_TYPE = ['once', 'foreach', 'join', 'with', 'if', 'select', 'unroll'] as const;
export type SelectType = typeof SELECT_TYPE[number];
@ -133,7 +133,7 @@ export interface ActionOnce extends ActionBase {
}
export interface ActionWithQuery extends ActionBase {
select: 'foreach' | 'join' | 'with' | 'if' | 'select'
select: 'foreach' | 'join' | 'with' | 'if' | 'select' | 'unroll'
query: Query
direction?: 'asc' | 'desc'
}
@ -647,6 +647,7 @@ class ActionEval {
state.xreg = state.yreg = null;
break;
case 'foreach':
case 'unroll':
if (state.xreg && state.yreg) throw new ECSError('no more index registers', this.action);
if (state.xreg) state.yreg = new IndexRegister(this.scope, this.qr);
else state.xreg = new IndexRegister(this.scope, this.qr);
@ -689,7 +690,7 @@ class ActionEval {
this.scope.state = this.oldState;
}
codeToString(): string {
const allowEmpty = ['if','foreach','join'];
const allowEmpty = ['if','foreach','unroll','join'];
if (this.entities.length == 0 && allowEmpty.includes(this.action.select))
return '';
@ -746,6 +747,9 @@ class ActionEval {
if (action.select == 'foreach' && entities.length > 1) {
code = this.wrapCodeInLoop(code, action, this.qr.entities);
}
if (action.select == 'unroll' && entities.length > 1) {
throw new ECSError('unroll is not yet implemented');
}
// define properties
props['%elo'] = entities[0].id.toString();
props['%ehi'] = entities[entities.length - 1].id.toString();