Changeset 708 for soft/giet_vm/applications/raycast/game.c

Timestamp:

Oct 1, 2015, 4:09:25 PM (9 years ago)

Author:

alain

Message:

Adapt the following application to the POSIX threads API

• convol
• classif
• raycast
• coproc
• display
• gameoflife
• transpose
• shell

File:

• soft/giet_vm/applications/raycast/game.c (modified) (4 diffs)

soft/giet_vm/applications/raycast/game.c

@@ -3 +3 @@
 #include "ctrl.h"
 #include <math.h>
-
-// Globals
+#include <stdio.h>
+
+//////////////////////////////
+// Game Maps
+//////////////////////////////
 
 static Map map[] =
@@ -70 +73 @@
 };
 
-static Game game =
-{
-    .mapId = 0
-};
-
-static bool g_exit;
-
+////////////////////////////
+// extern variables
+////////////////////////////
+
+extern Game         game;
+
+//////////////////////
 // Local functions
-
+//////////////////////
+
+////////////////////////////////////
 static void gameOnBlockHit(int type)
 {
-    g_exit = true;
-}
-
+    giet_tty_printf("\n[RAYCAST] Fatal collision, killed...\n");
+    game.exit = 1;
+}
+
+///////////////////////////////////////////////
 static void gameCollision(float opx, float opy)
 {
-    static bool collided_x = false;
-    static bool collided_y = false;
-
-    float px = game.player.x;
-    float py = game.player.y;
-    int fpx = floor(px);
-    int fpy = floor(py);
-    bool colliding_x = false;
-    bool colliding_y = false;
-    int collide_type_x = 0;
-    int collide_type_y = 0;
-    int type;
+    static unsigned int collided_x = 0;
+    static unsigned int collided_y = 0;
+
+    float               px = game.player.x;
+    float               py = game.player.y;
+    int                 fpx = floor(px);
+    int                 fpy = floor(py);
+    unsigned int        colliding_x = 0;
+    unsigned int        colliding_y = 0;
+    int                 collide_type_x = 0;
+    int                 collide_type_y = 0;
+    int                 type;
 
     // Check for x axis collisions
-    if      ((type = gameLocate(floor(px + COLLIDE_GAP), fpy))) {
-        colliding_x = true, collide_type_x = type;
+    if      ((type = gameLocate(floor(px + COLLIDE_GAP), fpy))) 
+    {
+        colliding_x = 1, collide_type_x = type;
         game.player.x = fpx - COLLIDE_GAP + 1;
     }
-    else if ((type = gameLocate(floor(px - COLLIDE_GAP), fpy))) {
-        colliding_x = true, collide_type_x = type;
+    else if ((type = gameLocate(floor(px - COLLIDE_GAP), fpy))) 
+    {
+        colliding_x = 1, collide_type_x = type;
         game.player.x = fpx + COLLIDE_GAP;
     }
 
     // Check for y axis collisions
-    if      ((type = gameLocate(fpx, floor(py + COLLIDE_GAP)))) {
-        colliding_y = true, collide_type_y = type;
+    if      ((type = gameLocate(fpx, floor(py + COLLIDE_GAP)))) 
+    {
+        colliding_y = 1, collide_type_y = type;
         game.player.y = fpy - COLLIDE_GAP + 1;
     }
-    else if ((type = gameLocate(fpx, floor(py - COLLIDE_GAP)))) {
-        colliding_y = true, collide_type_y = type;
+    else if ((type = gameLocate(fpx, floor(py - COLLIDE_GAP)))) 
+    {
+        colliding_y = 1, collide_type_y = type;
         game.player.y = fpy + COLLIDE_GAP;
     }
 
     // Check if we're inside a wall
-    if ((type = gameLocate(fpx, fpy))) {
-        colliding_x = true, collide_type_x = type;
-        colliding_y = true, collide_type_y = type;
-        game.player.x = opx, game.player.y = opy;
+    if ((type = gameLocate(fpx, fpy))) 
+    {
+        colliding_x   = 1   , collide_type_x = type;
+        colliding_y   = 1   , collide_type_y = type;
+        game.player.x = opx , game.player.y = opy;
     }
 
@@ -136 +148 @@
 }
 
-static void gameLogic()
-{
-    float opx = game.player.x;
-    float opy = game.player.y;
-
-    ctrlLogic(&game);
-    gameCollision(opx, opy);
-}
-
-static void gameInitMap()
-{
-    game.map = &map[game.mapId];
-    game.player.x = game.map->startX;
-    game.player.y = game.map->startY;
+/////////////////////////
+// Exported functions
+/////////////////////////
+
+///////////////
+void gameInit()
+{
+    game.mapId      = 0;
+    game.map        = &map[0];
+    game.player.x   = game.map->startX;
+    game.player.y   = game.map->startY;
     game.player.dir = game.map->startDir;
-    game.timeLeft = TIME_TOTAL;
-}
-
-// Exported functions
-
+    game.timeLeft   = TIME_TOTAL;
+    game.exit       = 0;
+}
+
+//////////////////
+void gameControl()
+{
+    // Only six commands are accepted:
+    // - key Q         : quit game
+    // - key UP        : forward move
+    // - key DOWN      : backward move
+    // - key RIGHT     : right move
+    // - key LEFT      : left move
+    // - any other key : continue
+    // several moves can be made before continue
+
+    char c;
+    unsigned int state = 0;
+    unsigned int done  = 0;
+
+    // display prompt
+    giet_tty_printf("\n[RAYCAST] > " );
+
+    // get one command
+    while ( done == 0 )
+    {
+        // get one character        
+        giet_tty_getc( &c );
+
+        if (state == 0) // first character
+        {
+            if      (c == 0x1B)         // ESCAPE : possible player move  
+            {
+                state = 1;
+            }
+            else if (c == 0x71)         // quit game
+            {
+                game.exit = 1;
+                done = 1;
+                giet_tty_printf("QUIT\n");
+            }
+            else                        // continue 
+            {
+                done = 1;
+                giet_tty_printf("\n");
+            }
+        } 
+        else if (state == 1) // previous character was ESCAPE
+        {
+            if      (c == 0x5B)        // BRAKET : possible player move
+            {
+                state = 2;
+            }
+            else                       // continue 
+            {
+                done = 1;
+                giet_tty_printf("\n");
+            }
+        }
+        else  // previous characters were ESCAPE,BRACKET
+        {
+            if      (c == 0x41)        // UP arrow <=> forward move
+            {
+                game.player.x += PLAYER_MOVE * cos(game.player.dir);
+                game.player.y += PLAYER_MOVE * sin(game.player.dir);
+                giet_tty_printf("GO ");
+                state = 0;
+            }
+            else if (c == 0x42)        // DOWN arrow <=> backward move
+            {
+                game.player.x -= PLAYER_MOVE * cos(game.player.dir);
+                game.player.y -= PLAYER_MOVE * sin(game.player.dir);
+                giet_tty_printf("BACK ");
+                state = 0;
+            }
+            else if (c == 0x43)        // RIGHT arrow <=> turn right     
+            {
+                game.player.dir += PLAYER_ROT;
+                giet_tty_printf("RIGHT ");
+                state = 0;
+            }
+            else if (c == 0x44)        // LEFT arrow <=> turn left      
+            {
+                game.player.dir -= PLAYER_ROT;
+                giet_tty_printf("LEFT ");
+                state = 0;
+            }
+            else                       // continue 
+            {
+                done = 1;
+                giet_tty_printf("\n");
+            }
+        }
+    }  // end while
+    
+    // check new position
+    int hit = gameLocate( game.player.x , game.player.y );
+    if ( hit )  gameOnBlockHit( hit );
+}
+
+////////////////////////////
 int gameLocate(int x, int y)
 {
     if ((x < 0 || x >= game.map->w) ||
-        (y < 0 || y >= game.map->h)) {
+        (y < 0 || y >= game.map->h)) 
+    {
         // Outside the map bounds
         return 1;
@@ -167 +273 @@
 }
 
-void gameRun()
-{
-    gameInitMap();
-
-    g_exit = false;
-
-    // Game loop
-    while (!g_exit) {
-        gameLogic();
-        dispRender(&game);
-    }
-
-    if (game.timeLeft == 0) {
-        // Time's up!
-        game.mapId = 0;
-    }
-    else {
-        // Go to next map
-        game.mapId++;
-    }
-}
-
+///////////////
 void gameTick()
 {
     game.timeLeft--;
 
-    if (game.timeLeft == 0) {
-        g_exit = true;
-    }
-}
-
-Game *gameInstance()
-{
-    return &game;
-}
+    if (game.timeLeft == 0) 
+    {
+        game.exit = 1;
+    }
+}
+