Added proper analog support.

src/defs.h

@@ -103,6 +103,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define BRIEFING_WIDTH 520
 
+#define JS_DEADZONE 0.05
+#define JS_MAX (32767 - JS_DEADZONE*32767)
+
 // Object Flags
 #define FL_WEAPCO 			(1L << 0)
 #define FL_FRIEND 			(1L << 1)

src/engine.c

@@ -103,6 +103,9 @@ void engine_init()
 	for (int i = 0; i < KEY_LAST; i++)
 		engine.keyState[i] = 0;
 
+	engine.xaxis = 0;
+	engine.yaxis = 0;
+
 	engine.eventTimer = 0;
 	engine.counter2 = 0;
 	engine.timeTaken = 0;

src/engine.h

@@ -92,7 +92,9 @@ typedef struct Engine_ {
 
 	char configDirectory[PATH_MAX];
 	
-	char keyState[KEY_LAST];
+	int keyState[KEY_LAST];
+	double xaxis;
+	double yaxis;
 
 	int cheat; // overall cheat
 	int cheatShield;

src/game.c

@@ -1339,6 +1339,8 @@ static void game_doPlayer()
 	int shapeToUse;
 	float cd;
 	float cc;
+	double xm = 0;
+	double ym = 0;
 	int xmoved = 0;
 	int ymoved = 0;
 	char msg[STRMAX];
@@ -1444,34 +1446,27 @@ static void game_doPlayer()
 			LIMIT_ADD(player.reload[0], -1, 0, 999);
 			LIMIT_ADD(player.reload[1], -1, 0, 999);
 
-			if (engine.keyState[KEY_UP])
+			xm = engine.keyState[KEY_RIGHT] - engine.keyState[KEY_LEFT];
-			{
+			if (!xm)
-				player.y -= player.speed;
+				xm = engine.xaxis;
-				engine.ssy += 0.1;
-				ymoved = 1;
-			}
 			
-			if (engine.keyState[KEY_DOWN])
+			if (xm)
 			{
-				player.y += player.speed;
+				player.x += xm * player.speed;
-				engine.ssy -= 0.1;
+				engine.ssx -= xm * 0.1;
-				ymoved = 1;
+				player.face = (xm < 0 ? 1 : 0);
-			}
-
-			if (engine.keyState[KEY_LEFT])
-			{
-				player.x -= player.speed;
-				engine.ssx += 0.1;
-				player.face = 1;
 				xmoved = 1;
 			}
 
-			if (engine.keyState[KEY_RIGHT])
+			ym = engine.keyState[KEY_DOWN] - engine.keyState[KEY_UP];
+			if (!ym)
+				ym = engine.yaxis;
+			
+			if (ym)
 			{
-				player.x += player.speed;
+				player.y += ym * player.speed;
-				engine.ssx -= 0.1;
+				engine.ssy -= ym * 0.1;
-				player.face = 0;
+				ymoved = 1;
-				xmoved = 1;
 			}
 
 			if (engine.keyState[KEY_ESCAPE])
@@ -1650,6 +1645,8 @@ static void game_doPlayer()
 			engine.keyState[KEY_DOWN] = 0;
 			engine.keyState[KEY_LEFT] = 0;
 			engine.keyState[KEY_RIGHT] = 0;
+			engine.xaxis = 0;
+			engine.yaxis = 0;
 			if (CHANCE(1. / 3.))
 				explosion_add(player.x + RANDRANGE(-10, 10),
 					player.y + RANDRANGE(-10, 10), SP_BIG_EXPLOSION);
@@ -2705,6 +2702,8 @@ int game_mainLoop()
 						engine.keyState[KEY_RIGHT] = 0;
 						engine.keyState[KEY_FIRE] = 0;
 						engine.keyState[KEY_ALTFIRE] = 0;
+						engine.xaxis = 0;
+						engine.yaxis = 0;
 						LIMIT_ADD(engine.musicVolume, -0.2, 0, 100);
 						audio_setMusicVolume(engine.musicVolume);
 					}

src/player.c

@@ -17,6 +17,9 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+#include <math.h>
+#include <stdlib.h>
+
 #include "SDL.h"
 
 #include "defs.h"
@@ -243,8 +246,7 @@ static enum keys mapkey(int code) {
 
 void player_getInput()
 {
-	static int prevjoyup, prevjoydown, prevjoyleft, prevjoyright;
+	double val;
-	int joyup, joydown, joyleft, joyright;
 	static int px = -1, py = -1;
 	int x, y, w, h;
 
@@ -315,21 +317,15 @@ void player_getInput()
 				break;
 
 			case SDL_JOYAXISMOTION:
-				if (engine.event.jaxis.axis == 1) {
+				val = MIN(1, (double)(abs(engine.event.jaxis.value)) / JS_MAX);
-					joyup = engine.event.jaxis.value < -16384;
+				if (val < JS_DEADZONE)
-					joydown = engine.event.jaxis.value >= 16384;
+					val = 0;
-					if (joyup != prevjoyup)
+
-						engine.keyState[KEY_UP] = prevjoyup = joyup;
+				if (engine.event.jaxis.axis == 0)
-					if (joydown != prevjoydown)
+					engine.xaxis = copysign(val, engine.event.jaxis.value);
-						engine.keyState[KEY_DOWN] = prevjoydown = joydown;
+				else if (engine.event.jaxis.axis == 1)
-				} else if (engine.event.jaxis.axis == 0) {
+					engine.yaxis = copysign(val, engine.event.jaxis.value);
-					joyleft = engine.event.jaxis.value < -16384;
+
-					joyright = engine.event.jaxis.value >= 16384;
-					if (joyleft != prevjoyleft)
-						engine.keyState[KEY_LEFT] = prevjoyleft = joyleft;
-					if (joyright != prevjoyright)
-						engine.keyState[KEY_RIGHT] = prevjoyright = joyright;
-				}
 				break;
 
 			case SDL_WINDOWEVENT:
@@ -365,14 +361,18 @@ void player_getInput()
 		x = screen->w * x / w;
 		y = screen->h * y / h;
 		if (px == x && py == y) {
-			if(engine.keyState[KEY_UP] && engine.cursor_y > 0)
+			if (engine.keyState[KEY_UP])
 				engine.cursor_y -= 4;
-			if(engine.keyState[KEY_DOWN] && engine.cursor_y < screen->h - 4)
+			if (engine.keyState[KEY_DOWN])
 				engine.cursor_y += 4;
-			if(engine.keyState[KEY_LEFT] && engine.cursor_x > 0)
+			if (engine.keyState[KEY_LEFT])
 				engine.cursor_x -= 4;
-			if(engine.keyState[KEY_RIGHT] && engine.cursor_x < screen->w - 4)
+			if (engine.keyState[KEY_RIGHT])
 				engine.cursor_x += 4;
+			if (engine.xaxis)
+				engine.cursor_x += 10 * engine.xaxis;
+			if (engine.yaxis)
+				engine.cursor_y += 10 * engine.yaxis;
 		} else {
 			engine.cursor_x = px = x;
 			engine.cursor_y = py = y;