If you really really need more than one warp, you can hard-code them. The warp script that exists now is a variable script that responds to whatever warp coordinates you have set for that screen. I'm assuming you want this extra warp to be activated by stepping on a tile. This is the existing script for the Warp Tile:
Code:
CPX player1_object
BNE notPlayerForWarpTile
WarpToScreen warpToMap, warpToScreen, #$01
;; arg0 = warp to map. 0= map1. 1= map2.
;; arg1 = screen to warp to.
;; arg2 = screen transition type - most likely use 1 here.
;; 1 = warp, where it observes the warp in position for the player.
notPlayerForWarpTile:
But we can make a second script, using a modified version of this, that warps to a specific screen. Argument 1 is the screen to warp to, and what we need to change. So check this out:
Code:
WarpToScreen warpToMap, #$00, #$01
If I change the variable to a specific number (NOT ON THE ORIGINAL WARP TILE, BUT OUR NEW TILE TYPE) we can make it go wherever we want. #$00 sends you to the upper left corner screen in the overworld.
So find your bonus screen and observe where it is. The overworld is on a 16 by 16 grid, and the numbers are in hexadecimal (1 through 9 and then A through F). So the far right corner of the first row would be #$0F. Directly below that would be $1F. And on like that....you get the idea.
This is easy to do. That's just for one extra warp though. What I don't know yet is if you have just one bonus level, or a different bonus level for each screen. To use the same script over and over, things get a bit more complicated....
Code:
CPX player1_object
BNE notPlayerForWarpTile
LDA #$88
CMP (whatever the variable that names the current screen is called)
BNE notbonus1
LDA #$F0
STA bonusWarp
notbonus1:
LDA #$89
CMP (whatever the variable that names the current screen is called)
BNE notbonua2
LDA #$F1
STA bonusWarp
notbonus2:
WarpToScreen warpToMap, bonusWarp, #$01
;; arg0 = warp to map. 0= map1. 1= map2.
;; arg1 = screen to warp to.
;; arg2 = screen transition type - most likely use 1 here.
;; 1 = warp, where it observes the warp in position for the player.
notPlayerForWarpTile:
What'd I do here? I made a variable in Project Settings > User Variables called bonusWarp. For every bonus screen you create, you have to use a different warp, so we have to make this cascading script where the program keeps checking the number of your current screen to the number of each screen that a bonus warp should be on. If it hits one of the matches, it loads bonusWarp with the number of the warp-to screen and then warps you there.
Unfortunately, they changed the name of the "current screen" variable in 4.5 and I don't know what it is. I can't find it. The closest equivalent I could find was "currentNametable" and that doesn't sound right to me. So this is incomplete and you shouldn't use it until Dale comes around, who knows more than me.
