X-Git-Url: http://deadsoftware.ru/gitweb?p=netwar.git;a=blobdiff_plain;f=game.c;h=219141884dd23ba9a59b2643135c78fcd83568e5;hp=cbc8e156ce5ff24ec6ef70e1a9150f34052f8a3d;hb=4148d3ff0c0c4b52b0741c38a867a1502600a65f;hpb=c4b04d12861ae0eac6315b1c2170013422136f80

diff --git a/game.c b/game.c
index cbc8e15..2191418 100644
--- a/game.c
+++ b/game.c
@@ -8,35 +8,77 @@
 
 #define SPEED  0.00006
 #define ROTATE 0.00004
+#define BULL_SPEED 0.008
 
 Player g_player[MAX_PLAYERS];
+Bullet g_bullet[MAX_BULLETS];
+
+void g_player_set(unsigned int id, bool live, float x, float y, float r, float vx, float vy, float vr) {
+	assert(id < MAX_PLAYERS);
+	g_player[id] = (Player) {
+		.updated = true,
+		.live    = live,
+		.x       = x,
+		.y       = y,
+		.r       = r,
+		.vx      = vx,
+		.vy      = vy,
+		.vr      = vr,
+	};
+}
+
+void g_bullet_set(unsigned int id, unsigned int owner, bool live, float x, float y, float vx, float vy, int tick) {
+	assert(id < MAX_BULLETS);
+	assert(owner < MAX_PLAYERS);
+	g_bullet[id] = (Bullet) {
+		.live  = live,
+		.owner = owner,
+		.x     = x,
+		.y     = y,
+		.vx    = vx,
+		.vy    = vy,
+		.tick  = tick,
+	};
+}
+
+static int freebullet() {
+	for(int i = 0; i < MAX_BULLETS; i++)
+		if(!g_bullet[i].live)
+			return i;
+	return -1;
+}
 
 static void moveplayer(int id, float speed) {
 	g_player[id].vx += speed * cos(g_player[id].r * 2 * M_PI);
 	g_player[id].vy += speed * sin(g_player[id].r * 2 * M_PI);
 }
 
+static void roteplayer(int id, float speed) {
+	g_player[id].vr += speed;
+}
+
+static void fireplayer(int id) {
+	int j = freebullet();
+	if(j < 0)
+		return;
+
+	float vx = BULL_SPEED * cos(g_player[id].r * 2 * M_PI);
+	float vy = BULL_SPEED * sin(g_player[id].r * 2 * M_PI);
+	g_bullet_set(j, id, true, g_player[id].x, g_player[id].y, vx, vy, 0);
+}
+
 static void checkspacebound(float * a) {
 	float x = *a;
 	if(x < -1)
-		x = abs(x);
+		x = fabs(x);
 	else if(x > 1)
 		x = -x;
 	*a = x;
 }
 
-void g_player_set(unsigned int id, bool live, float x, float y, float r, float vx, float vy, float vr) {
-	assert(id < MAX_PLAYERS);
-	g_player[id] = (Player) {
-		.updated = true,
-		.live    = live,
-		.x       = x,
-		.y       = y,
-		.r       = r,
-		.vx      = vx,
-		.vy      = vy,
-		.vr      = vr,
-	};
+static bool collide(float x1, float y1, float r1, float x2, float y2, float r2) {
+	float l = sqrtf(powf(x1 - x2, 2) + powf(y1 - y2, 2));
+	return ((l - r1 - r2) <= 0);
 }
 
 void g_player_does(unsigned int id, DoesCode code) {
@@ -45,9 +87,9 @@ void g_player_does(unsigned int id, DoesCode code) {
 	switch(code) {
 	case DOES_UP:    moveplayer(id, SPEED); break;
 	case DOES_DOWN:  moveplayer(id, -SPEED); break;
-	case DOES_LEFT:  g_player[id].vr -= ROTATE; break;
-	case DOES_RIGHT: g_player[id].vr += ROTATE; break;
-	case DOES_FIRE:  break;
+	case DOES_LEFT:  roteplayer(id, -ROTATE); break;
+	case DOES_RIGHT: roteplayer(id, ROTATE); break;
+	case DOES_FIRE:  fireplayer(id); break;
 	}
 }
 
@@ -62,4 +104,25 @@ void g_update() {
 			checkspacebound(&g_player[i].y);
 		}
 	}
+
+	for(int i = 0; i < MAX_BULLETS; i++) {
+		if(g_bullet[i].live) {
+			g_bullet[i].updated = true;
+			g_bullet[i].tick += 1;
+			g_bullet[i].x += g_bullet[i].vx;
+			g_bullet[i].y += g_bullet[i].vy;
+
+			checkspacebound(&g_bullet[i].x);
+			checkspacebound(&g_bullet[i].y);
+
+			for(int j = 0; j < MAX_PLAYERS; j++)
+				if(g_player[j].live)
+					if(collide(g_bullet[i].x, g_bullet[i].y, 0.0001, g_player[j].x, g_player[j].y, PLAYER_SIZE))
+						if(j != g_bullet[i].owner)
+							g_player[j].live = false;
+
+			if(g_bullet[i].tick > BULLET_TIME)
+				g_bullet[i].live = false;
+		}
+	}
 }