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Fix FS #7685 by using the backlight helper functions. Some code policing and cleaning. Still contains a potential crash although this version does not crash atm.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14559 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Peter D'Hoye 2007-08-31 21:53:32 +00:00
parent 4a346f43cd
commit fd3b0d95d8
1 changed files with 49 additions and 27 deletions
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76
apps/plugins/maze.c
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@ -30,6 +30,7 @@
#include "plugin.h" #include "plugin.h"
#include "pluginlib_actions.h" #include "pluginlib_actions.h"
#include "helper.h"
PLUGIN_HEADER PLUGIN_HEADER
@ -93,43 +94,51 @@ const struct button_mapping *plugin_contexts[]
#define MAZE_HEIGHT 24 #define MAZE_HEIGHT 24
#endif #endif
struct coord_stack{ struct coord_stack
{
int data[MAZE_WIDTH*MAZE_HEIGHT]; int data[MAZE_WIDTH*MAZE_HEIGHT];
int stp; int stp;
}; };
void coord_stack_init(struct coord_stack* stack){ void coord_stack_init(struct coord_stack* stack)
{
stack->stp=0; stack->stp=0;
} }
void coord_stack_push(struct coord_stack* stack, int x, int y){ void coord_stack_push(struct coord_stack* stack, int x, int y)
{
stack->data[stack->stp] = ((x<<8)|y); stack->data[stack->stp] = ((x<<8)|y);
stack->stp++; stack->stp++;
} }
void coord_stack_get(struct coord_stack* stack, int index, int* x, int* y){ void coord_stack_get(struct coord_stack* stack, int index, int* x, int* y)
{
*y = stack->data[index]; *y = stack->data[index];
*y &= 0xff; *y &= 0xff;
*x = (stack->data[index])>>8; *x = (stack->data[index])>>8;
} }
void coord_stack_pop(struct coord_stack* stack, int* x, int* y){ void coord_stack_pop(struct coord_stack* stack, int* x, int* y)
{
stack->stp--; stack->stp--;
coord_stack_get(stack, stack->stp, x, y); coord_stack_get(stack, stack->stp, x, y);
} }
int coord_stack_count(struct coord_stack* stack){ int coord_stack_count(struct coord_stack* stack)
{
return(stack->stp); return(stack->stp);
} }
struct maze{ struct maze
unsigned short maze[MAZE_WIDTH][MAZE_HEIGHT]; {
int solved; int solved;
int player_x; int player_x;
int player_y; int player_y;
unsigned short maze[MAZE_WIDTH][MAZE_HEIGHT];
}; };
void maze_init(struct maze* maze){ void maze_init(struct maze* maze)
{
int x, y; int x, y;
rb->memset(maze->maze, 0, sizeof(maze->maze)); rb->memset(maze->maze, 0, sizeof(maze->maze));
maze->solved = false; maze->solved = false;
@ -155,7 +164,8 @@ void maze_init(struct maze* maze){
} }
} }
void maze_draw(struct maze* maze, struct screen* display){ void maze_draw(struct maze* maze, struct screen* display)
{
int x, y; int x, y;
int wx, wy; int wx, wy;
int point_width, point_height, point_offset_x, point_offset_y; int point_width, point_height, point_offset_x, point_offset_y;
@ -254,7 +264,8 @@ void maze_draw(struct maze* maze, struct screen* display){
int maze_pick_random_neighbour_cell_with_walls(struct maze* maze, int maze_pick_random_neighbour_cell_with_walls(struct maze* maze,
int x, int y, int *pnx, int *pny){ int x, int y, int *pnx, int *pny)
{
int ncount = 0; int ncount = 0;
struct coord_stack neighbours; struct coord_stack neighbours;
@ -299,7 +310,8 @@ int maze_pick_random_neighbour_cell_with_walls(struct maze* maze,
} }
/* Removes the wall between the cell (x,y) and the cell (nx,ny) */ /* Removes the wall between the cell (x,y) and the cell (nx,ny) */
void maze_remove_wall(struct maze* maze, int x, int y, int nx, int ny){ void maze_remove_wall(struct maze* maze, int x, int y, int nx, int ny)
{
/* where is our neighbour? */ /* where is our neighbour? */
/* north or south */ /* north or south */
@ -329,7 +341,8 @@ void maze_remove_wall(struct maze* maze, int x, int y, int nx, int ny){
} }
} }
void maze_generate(struct maze* maze){ void maze_generate(struct maze* maze)
{
int total_cells = MAZE_WIDTH * MAZE_HEIGHT; int total_cells = MAZE_WIDTH * MAZE_HEIGHT;
int visited_cells; int visited_cells;
int available_neighbours; int available_neighbours;
@ -366,11 +379,12 @@ void maze_generate(struct maze* maze){
} }
void maze_solve(struct maze* maze){ void maze_solve(struct maze* maze)
{
int x, y; int x, y;
int dead_ends = 1;
unsigned short cell; unsigned short cell;
unsigned short w; unsigned short w;
int dead_ends = 1;
unsigned short solved_maze[MAZE_WIDTH][MAZE_HEIGHT]; unsigned short solved_maze[MAZE_WIDTH][MAZE_HEIGHT];
maze->solved = ~(maze->solved); maze->solved = ~(maze->solved);
@ -414,7 +428,8 @@ void maze_solve(struct maze* maze){
} }
} }
void maze_move_player_down(struct maze* maze){ void maze_move_player_down(struct maze* maze)
{
unsigned short cell=maze->maze[maze->player_x][maze->player_y]; unsigned short cell=maze->maze[maze->player_x][maze->player_y];
if( !(cell & WALL_S) && if( !(cell & WALL_S) &&
!(cell & BORDER_S)){ !(cell & BORDER_S)){
@ -422,7 +437,8 @@ void maze_move_player_down(struct maze* maze){
} }
} }
void maze_move_player_up(struct maze* maze){ void maze_move_player_up(struct maze* maze)
{
unsigned short cell=maze->maze[maze->player_x][maze->player_y]; unsigned short cell=maze->maze[maze->player_x][maze->player_y];
if( !(cell & WALL_N) && if( !(cell & WALL_N) &&
!(cell & BORDER_N)){ !(cell & BORDER_N)){
@ -430,7 +446,8 @@ void maze_move_player_up(struct maze* maze){
} }
} }
void maze_move_player_left(struct maze* maze){ void maze_move_player_left(struct maze* maze)
{
unsigned short cell=maze->maze[maze->player_x][maze->player_y]; unsigned short cell=maze->maze[maze->player_x][maze->player_y];
if( !(cell & WALL_W) && if( !(cell & WALL_W) &&
!(cell & BORDER_W)){ !(cell & BORDER_W)){
@ -438,7 +455,8 @@ void maze_move_player_left(struct maze* maze){
} }
} }
void maze_move_player_right(struct maze* maze){ void maze_move_player_right(struct maze* maze)
{
unsigned short cell=maze->maze[maze->player_x][maze->player_y]; unsigned short cell=maze->maze[maze->player_x][maze->player_y];
if( !(cell & WALL_E) && if( !(cell & WALL_E) &&
!(cell & BORDER_E)){ !(cell & BORDER_E)){
@ -448,7 +466,8 @@ void maze_move_player_right(struct maze* maze){
/**********************************/ /**********************************/
/* this is the plugin entry point */ /* this is the plugin entry point */
/**********************************/ /**********************************/
enum plugin_status plugin_start(struct plugin_api* api, void* parameter){ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
{
int button, lastbutton = BUTTON_NONE; int button, lastbutton = BUTTON_NONE;
int quit = 0; int quit = 0;
int i; int i;
@ -456,7 +475,8 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter){
(void)parameter; (void)parameter;
rb = api; rb = api;
rb->backlight_set_timeout(1); /* Turn off backlight timeout */
backlight_force_on(rb); /* backlight control in lib/helper.c */
#if LCD_DEPTH > 1 #if LCD_DEPTH > 1
rb->lcd_set_backdrop(NULL); rb->lcd_set_backdrop(NULL);
@ -520,19 +540,21 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter){
break; break;
case MAZE_QUIT: case MAZE_QUIT:
/* quit plugin */ /* quit plugin */
quit=true; quit=1;
return PLUGIN_OK;
break; break;
default: default:
if (rb->default_event_handler(button) == SYS_USB_CONNECTED) { if (rb->default_event_handler(button) == SYS_USB_CONNECTED) {
return PLUGIN_USB_CONNECTED; /* quit plugin */
quit=2;
} }
break; break;
} }
if( button != BUTTON_NONE ) if( button != BUTTON_NONE )
lastbutton = button; lastbutton = button;
rb->yield(); if(!quit)
rb->yield(); /* BUG alert: always yielding causes data abort */
} }
rb->backlight_set_timeout(rb->global_settings->backlight_timeout); /* Turn on backlight timeout (revert to settings) */
return PLUGIN_OK; backlight_use_settings(rb); /* backlight control in lib/helper.c */
return ((quit == 1) ? PLUGIN_OK : PLUGIN_USB_CONNECTED);
} }