like the title says, I'm looking for a way to display a player name in a /tellraw command which is run by a command block. Example:
/tellraw @a {"text":"","extra":[{"text":"A player has won the game!","color":"blue"}]}
And the output is something like this:
A player has won the game!
But I want the output to be something like
JasonSPQR has won the game!
Using the @p parameter
Tellraw allows for a "selector" part, which takes any selector you want and displays a name. You should do:
/tellraw @a {"text":"","color":"blue","extra":[{"selector":"@p"},{"text":" has won the game!"}]}
This will only work in 1.8 snapshots and above. There is no way to do this in older versions.
you could perhaps make the game work with the scoreboard feature, then in the case of the game being a deathmatch kind of thing, or something where you have a limited number of kills or something like that, you could make the command block check the scoreboard for a certain score, when that score is met, you could then use a comparator to have the command block output a redstone signal and contact another command block, which says [player with score=x] wins, and you could do other things similar to this for a race, in which case, you'd have a line of command blocks buried beneath the finish line, the command blocks would be running the /testfor command, then from those command blocks, you'd run a compator to a repeater, from the repeaters, you'd run a redstone wire to a command block saying [player] wins or [player] has crossed the finish line
Use the Scoreboard Command like one of the other answers said:
/tellraw @a {"text":"","color":"blue","extra":[{"selector":@p[score_wins_min=1},{"text":" has won the game!"}]}
And then a Comparator going into a repeater going into a Command Block:
scoreboard players set @a wins 0
