Possible fixes to shell race level desyncs, prevent first place from getting mushrooms

mods/shell-rush/level.lua

@@ -95,26 +95,10 @@ function spawn_custom_level_objects()
         return
     end
 
-    -- look for existing powerups
-    local obj = obj_get_first(OBJ_LIST_LEVEL)
-    while obj ~= nil do
-        local behaviorId = get_id_from_behavior(obj.behavior)
-
-        if behaviorId == id_bhvItemBox then
-            -- find closest position to put it in
-            local objPos = { x = obj.oPosX, y = obj.oPosY, z = obj.oPosZ }
-            for i in pairs(gLevelData.powerups) do
-                local powPos = gLevelData.powerups[i].pos
-                local tempPos = { x = powPos.x, y = objPos.y, z = powPos.z }
-                local dist = vec3f_dist(objPos, tempPos)
-                if dist < 5 then
-                    gLevelData.powerups[i].obj = obj
-                end
-            end
-        end
-
-        -- iterate
-        obj = obj_get_next(obj)
+    -- only handle powerups if we're sync valid
+    np = gNetworkPlayers[0]
+    if (not np.currAreaSyncValid) or (not np.currLevelSyncValid) then
+        return
     end
 
     -- spawn missing powerups

mods/shell-rush/main.lua

@@ -1,6 +1,6 @@
 -- name: Shell Rush
 -- description: Race around SM64 levels on shells.\n\nCollect powerups such as red shells, green shells, bananas, and mushrooms.\n\nOnly use a save that has lowered the water in the moat.
--- incompatible: gamemode
+-- incompatible: gamemode moveset
 
 DEBUG = false
 UNST22 = true -- gotta work around unst 22 bugs :(

mods/shell-rush/powerup.lua

@@ -261,6 +261,20 @@ function select_powerup()
     local s = gPlayerSyncTable[0]
     local pick = math.random(1, POWERUP_MAX-1)
     local luck = math.random() < 0.33
+
+    -- don't give mushrooms when first place
+    local rank = 0
+    for i in pairs(gRankings) do
+        if gRankings[i].playerIndex == 0 then
+            rank = i
+        end
+    end
+    if rank <= 1 then
+        if pick == POWERUP_MUSHROOM then
+            pick = POWERUP_GREEN_SHELL
+        end
+    end
+
     if luck then
         s.powerup[0] = pick
         s.powerup[1] = pick

mods/shell-rush/race.lua

@@ -123,7 +123,7 @@ function race_update()
     end
 
     local np = gNetworkPlayers[0]
-    if gGlobalSyncTable.gotoLevel ~= -1 then
+    if gGlobalSyncTable.gotoLevel ~= -1 and np.currAreaSyncValid and np.currLevelSyncValid then
         if np.currLevelNum ~= gGlobalSyncTable.gotoLevel then
             if gGlobalSyncTable.gotoLevel == LEVEL_CASTLE_GROUNDS then
                 warp_to_castle(LEVEL_VCUTM)