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hey everybody,

I've written my own menu layering system. Zo the menu can have different layers. But the only thing I got is a black screen. I using the nitro engine. I hope you can help me with this, i'm already a week long trying to get this work.

UZMenuLayer.h

Code:

#ifndef __UZ_MENULAYER_H__
#define __UZ_MENULAYER_H__

#include <nds.h>
#include "NE2D.h"

#define UZ_MAX_WINDOWS 128
#define UZ_MAX_LAYERS 128

typedef struct{
bool visible;
NE_Window ** window;
int priority;
bool screen;
/* 0 = down / 1 = top*/
}UZ_MenuLayer;

/* Functions */
// -- Initing / Freeing
void UZ_MenuLayerInit(int mlayers, int mwindows);
void UZ_MenuLayerFree();
// -- Adding / Deleting
UZ_MenuLayer* UZ_MenuLayerCreate();
void UZ_MenuLayerDelete(UZ_MenuLayer* menulayer);
// -- Drawing down / top
void UZ_MenuLayerDrawDown();
void UZ_MenuLayerDrawTop();
// -- Edit Settings
void UZ_MenuLayerSetPriority(UZ_MenuLayer* menulayer, int priority);
void UZ_MenuLayerSetVisible(UZ_MenuLayer* menulayer, bool visible);
void UZ_MenuLayerSetScreen(UZ_MenuLayer* menulayer, bool screen);
// -- Window Settings / Adding / Removing
int UZ_MenuLayerWindowAdd(UZ_MenuLayer* menulayer, NE_Window* window);
void UZ_MenuLayerWindowRemove(UZ_MenuLayer* menulayer, NE_Window* window);

#endif

UZMenuLayer.c

Code:

#include "UZMenuLayer.h"

bool uz_menulayerinited = false;
UZ_MenuLayer ** MenuLayers;
int uz_max_layers;
int uz_max_windows;

void UZ_MenuLayerInit(int mlayers, int mwindows)
{
if(uz_menulayerinited==true)UZ_MenuLayerFree();
/* Set Max Layers */
if(mlayers>0){
   uz_max_layers=mlayers;
} else {
   uz_max_layers=UZ_MAX_LAYERS;
}
/* Set Max Windows */
if(mwindows>0){
   uz_max_windows=mwindows;
} else {
   uz_max_windows=UZ_MAX_WINDOWS;
}
/* Allocated Enough Memory */
MenuLayers = malloc(sizeof(UZ_MenuLayer)*uz_max_layers);
int i=0;
for(i=0;i<uz_max_layers;i++)
{
   MenuLayers[i]=NULL;
}
}

void UZ_MenuLayerFree()
{
if(uz_menulayerinited==false)return;
int i=0;
/* Free All Menu Layers */
for(i=0;i<uz_max_layers;i++)
{
   if(MenuLayers[i]!=NULL)
   {
      UZ_MenuLayerDelete(MenuLayers[i]);
   }
}
free(MenuLayers);
}

UZ_MenuLayer* UZ_MenuLayerCreate()
{
if(uz_menulayerinited==false)return NULL;
int i=0;
/* Check if id is free */
for(i=0;i<uz_max_layers;i++)
{
   /* If id is free */
   if(MenuLayers[i]==NULL)
   {
      UZ_MenuLayer* menulayer;
      menulayer = malloc(sizeof(UZ_MenuLayer)); //Set memory
      menulayer->visible=true;             //Set visible
      menulayer->priority=0;                //Set priority
      menulayer->screen=0;                //Set screen
      menulayer->window = malloc(sizeof(NE_Window)*uz_max_windows);
      for(i=0;i<uz_max_windows;i++)
      {
         menulayer->window[i]=NULL;          //Init Windows
      }
      MenuLayers[i]=menulayer;             //Keep pointer
      return menulayer;
   }
}
return NULL;
}

void UZ_MenuLayerDelete(UZ_MenuLayer* menulayer)
{
if(uz_menulayerinited==false)return;
if(menulayer==NULL)return;
int i;
for(i=0;i<uz_max_layers;i++)
{
   if(MenuLayers[i]==menulayer)
   {
      MenuLayers[i]=NULL;
      for(i=0;i<uz_max_windows;i++)
      {
         UZ_MenuLayerWindowRemove(menulayer,menulayer->window[i]);
      }
      free(menulayer);
      return; //Don't loop unnessary loops.
   }
}

}

void UZ_MenuLayerDrawDown()
{
if(uz_menulayerinited==false)return;
int i=0;
for(i=0;i<uz_max_layers;i++)
{
   if(MenuLayers[i]!=NULL)
   {
      if(MenuLayers[i]->screen==0 && MenuLayers[i]->visible==true)
      {
         int j=0;
         for(j=0;j<uz_max_windows;j++)
         {
            /* Get Original Priority */
            int tmp_priority=MenuLayers[i]->window[j]->priority;
            /* Set to the correct depth for MenuLayers */
            NE_WindowSetPriority(MenuLayers[i]->window[j],MenuLayers[i]->priority+tmp_priority);
            /* Draw Window */
            NE_WindowDraw(MenuLayers[i]->window[j]);
            /* Reset Priority */
            NE_WindowSetPriority(MenuLayers[i]->window[j],tmp_priority);
         }
      }
   }
}
}

void UZ_MenuLayerDrawTop()
{
if(uz_menulayerinited==false)return;
int i=0;
for(i=0;i<uz_max_layers;i++)
{
   if(MenuLayers[i]!=NULL)
   {
      if(MenuLayers[i]->screen==1 && MenuLayers[i]->visible==true)
      {
         int j=0;
         for(j=0;j<uz_max_windows;j++)
         {
            /* Get Original Priority */
            int tmp_priority=MenuLayers[i]->window[j]->priority;
            /* Set to the correct depth for MenuLayers */
            NE_WindowSetPriority(MenuLayers[i]->window[j],MenuLayers[i]->priority+tmp_priority);
            /* Draw Window */
            NE_WindowDraw(MenuLayers[i]->window[j]);
            /* Reset Priority */
            NE_WindowSetPriority(MenuLayers[i]->window[j],tmp_priority);
         }
      }
   }
}
}

void UZ_MenuLayerSetPriority(UZ_MenuLayer* menulayer, int priority)
{
if(uz_menulayerinited==false)return;
if(menulayer==NULL)return;
menulayer->priority = priority;
}

void UZ_MenuLayerSetVisible(UZ_MenuLayer* menulayer, bool visible)
{
if(uz_menulayerinited==false)return;
if(menulayer==NULL)return;
menulayer->visible = visible;
}

void UZ_MenuLayerSetScreen(UZ_MenuLayer* menulayer, bool screen)
{
if(uz_menulayerinited==false)return;
if(menulayer==NULL)return;
menulayer->screen = screen;
}

int UZ_MenuLayerWindowAdd(UZ_MenuLayer* menulayer, NE_Window* window)
{
if(uz_menulayerinited==false)return 0;
if(menulayer==NULL)return 0;
int i=0;
for(i=0;i<uz_max_windows;i++)
{
   if(menulayer->window[i]==NULL)
   {
      menulayer->window[i]=malloc(sizeof(NE_Window));
      menulayer->window[i]=window;
      return 1;
   }
}
return 0;
}

void UZ_MenuLayerWindowRemove(UZ_MenuLayer* menulayer, NE_Window* window)
{
if(uz_menulayerinited==false)return;
if(menulayer==NULL)return;
int i=0;
for(i=0;i<uz_max_windows;i++)
{
   if(menulayer->window[i]==window)
   {
      free(menulayer->window[i]);
      menulayer->window[i]=NULL;
   }
}
}

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gbadev.org forum archive

DS development > Bug in my menu layering

#166775 - hacker013 - Tue Feb 17, 2009 4:54 pm