add bombs, closes #24

src/game.cpp

@@ -1,6 +1,7 @@
 #include "game.h"
 
 #include <stdlib.h>
+#include <math.h>
 
 void game_setup_team(team_t *team, uint8_t id) {
 	team->id = id;
@@ -55,7 +56,7 @@ player_t *game_spawn_player(game_t *game, team_t *team) {
 	return player;
 }
 
-player_t *game_spawn_player_id(game_t *game, team_t *team, uint8_t id) {
+player_t *game_spawn_player_id(game_t *game, team_t *team, uint16_t id) {
 	player_t *player = _game_free_player(game);
 	player->team = team;
 	player->id = id;
@@ -83,6 +84,49 @@ void game_update_players(game_t *game, double dt) {
 	}
 }
 
+void _explode_bomb(game_t *game, bomb_t *bomb, void(*explosion_callback)(
+		double x, double y, double z)) {
+	size_t i;
+	for (i = 0; i < GAME_PLAYER_COUNT; i++) {
+		player_t *player = &game->player[i];
+		if (player->status == 0)
+			return;
+		double distance2 = pow(player->x - bomb->x, 2) + pow(player->y
+				- bomb->y, 2) + pow(player->z - bomb->z, 2);
+		if (distance2 < 10000.0) {
+			explosion_callback(player->x, player->y, player->z);
+			player->x = player->team->x + 100;
+			player->y = player->team->y;
+			player->z = player->team->z;
+			player->vx = 0.;
+			player->vy = 0.;
+			player->vz = 0.;
+		}
+	}
+}
+
+void game_update_bombs(game_t *game, double dt, void(*explosion_callback)(
+		double x, double y, double z)) {
+	size_t i;
+	for (i = 0; i < GAME_BOMB_COUNT; i++) {
+		bomb_t *bomb = &game->bomb[i];
+		if (bomb->status == 0)
+			return;
+		bomb->x += bomb->vx * dt;
+		bomb->y += bomb->vy * dt;
+		bomb->z += bomb->vz * dt;
+		bomb->ttl -= dt;
+		if (bomb->ttl < 0) {
+			if (bomb->status == 1) {
+				explosion_callback(bomb->x, bomb->y, bomb->z);
+				bomb->status = 2;
+			} else if (bomb->ttl < 0.8) {
+				_explode_bomb(game, bomb, explosion_callback);
+				bomb->status = 0;
+			}
+		}
+	}
+}
 
 size_t game_active_team_players(game_t *game, team_t *team) {
 	size_t i, count = 0;
@@ -108,7 +152,7 @@ team_t *game_team_with_least_players(game_t *game) {
 	return team;
 }
 
-team_t *game_team(game_t *game, uint8_t id){
+team_t *game_team(game_t *game, uint16_t id) {
 	size_t i;
 	for (i = 0; i < GAME_TEAM_COUNT; i++) {
 		if (game->team[i].id == id) {
@@ -118,7 +162,7 @@ team_t *game_team(game_t *game, uint8_t id){
 	return NULL;
 }
 
-player_t *game_player(game_t *game, uint8_t id){
+player_t *game_player(game_t *game, uint16_t id) {
 	size_t i;
 	for (i = 0; i < GAME_PLAYER_COUNT; i++) {
 		if (game->player[i].id == id) {
@@ -127,3 +171,14 @@ player_t *game_player(game_t *game, uint8_t id){
 	}
 	return NULL;
 }
+
+bomb_t *game_spawn_bomb(game_t *game) {
+	size_t i;
+	for (i = 0; i < GAME_BOMB_COUNT; i++) {
+		if (game->bomb[i].status == 0) {
+			game->bomb[i].status = 1;
+			return &game->bomb[i];
+		}
+	}
+	return NULL;
+}

src/game.h

@@ -9,18 +9,26 @@ typedef struct game_t game_t;
 
 #define GAME_TEAM_COUNT 8
 #define GAME_PLAYER_COUNT 64
+#define GAME_BOMB_COUNT (GAME_PLAYER_COUNT * 4)
 
 struct player_t {
-	uint8_t id;
+	uint16_t id;
-	uint8_t status;
+	uint16_t status;
 	double x, y, z;
 	double rx, ry, rz, rw;
 	double vx, vy, vz;
 	team_t *team;
 };
 
+struct bomb_t {
+	uint8_t status;
+	double x, y, z;
+	double vx, vy, vz;
+	double ttl;
+};
+
 struct team_t {
-	uint8_t id;
+	uint16_t id;
 	double x, y, z;
 	float color[4];
 };
@@ -28,15 +36,20 @@ struct team_t {
 struct game_t {
 	team_t team[GAME_TEAM_COUNT];
 	player_t player[GAME_PLAYER_COUNT];
-	int32_t max_player_id;
+	bomb_t bomb[GAME_BOMB_COUNT];
+	int16_t max_player_id;
 };
 
 extern void game_setup(game_t *game);
 extern team_t *game_team_with_least_players(game_t *game);
 extern player_t *game_spawn_player(game_t *game, team_t *team);
-extern player_t *game_spawn_player_id(game_t *game, team_t *team, uint8_t id);
+extern player_t *game_spawn_player_id(game_t *game, team_t *team, uint16_t id);
-extern team_t *game_team(game_t *game, uint8_t id);
+extern team_t *game_team(game_t *game, uint16_t id);
-extern player_t *game_player(game_t *game, uint8_t id);
+extern player_t *game_player(game_t *game, uint16_t id);
+extern bomb_t *game_bomb(game_t *game, uint16_t index);
 extern void game_update_players(game_t *game, double dt);
+extern bomb_t *game_spawn_bomb(game_t *game);
+extern void game_update_bombs(game_t *game, double dt,
+		void(*explosion_callback)(double x, double y, double z));
 
 #endif

src/main.cpp

@@ -85,6 +85,18 @@ void draw_player(player_t *player) {
 	glPopMatrix();
 }
 
+void draw_bomb(bomb_t *bomb) {
+	if (bomb->status != 1)
+		return;
+	GLfloat red[] = { 1.0f, 0.0f, 0.0f, 1.0f };
+	glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red);
+	glMatrixMode( GL_MODELVIEW);
+	glPushMatrix();
+	glTranslated(bomb->x, bomb->y, bomb->z);
+	gluSphere(quadratic, 3.f, 32, 32);
+	glPopMatrix();
+}
+
 void setup_network(const char *remote) {
 	if (enet_initialize() != 0) {
 		fprintf(stderr, "An error occurred while initializing ENet.\n");
@@ -147,6 +159,8 @@ void setup_network(const char *remote) {
 #define MESSAGE_ACCEPT 2
 #define MESSAGE_PLAYER_UPDATE 3
 #define MESSAGE_PLAYER_ACCELERATE 4
+#define MESSAGE_BOMB_DROP 5
+#define MESSAGE_BOMB_UPDATE 6
 
 typedef struct message_t {
 	uint16_t msg_id;
@@ -155,22 +169,22 @@ typedef struct message_t {
 typedef struct player_spawn_message_t {
 	uint16_t msg_id;
 	uint8_t team_id;
-	uint8_t player_id;
+	uint16_t player_id;
 } player_spawn_message_t;
 
 typedef struct player_kill_message_t {
 	uint16_t msg_id;
-	uint8_t player_id;
+	uint16_t player_id;
 } player_kill_message_t;
 
 typedef struct accept_message_t {
 	uint16_t msg_id;
-	uint8_t player_id;
+	uint16_t player_id;
 } accept_message_t;
 
 typedef struct player_update_message_t {
 	uint16_t msg_id;
-	uint8_t player_id;
+	uint16_t player_id;
 	unsigned int session;
 	double x, y, z;
 	double vx, vy, vz;
@@ -178,10 +192,25 @@ typedef struct player_update_message_t {
 
 typedef struct player_accelerate_message_t {
 	uint16_t msg_id;
-	uint8_t player_id;
+	uint16_t player_id;
 	double x, y, z;
 } player_accelerate_message_t;
 
+typedef struct bomb_drop_meesage_t {
+	uint16_t msg_id;
+	double x, y, z;
+	double vx, vy, vz;
+	double ttl;
+} bomb_drop_meesage_t;
+
+typedef struct bomb_update_meesage_t {
+	uint16_t msg_id;
+	uint16_t bomb_index;
+	double x, y, z;
+	double vx, vy, vz;
+	double ttl;
+} bomb_update_meesage_t;
+
 void send_player_updates(game_t *game) {
 	size_t i;
 	for (i = 0; i < GAME_PLAYER_COUNT; i++) {
@@ -201,6 +230,68 @@ void send_player_updates(game_t *game) {
 	}
 }
 
+void dispatch_message(enet_uint8 *data, size_t length, game_t *game) {
+	message_t *msg = (message_t *) data;
+	switch (msg->msg_id) {
+	case MESSAGE_PLAYER_SPAWN: {
+		player_spawn_message_t *sm = (player_spawn_message_t *) data;
+		team_t *team = game_team(game, sm->team_id);
+		player_t *player = game_spawn_player_id(game, team, sm->player_id);
+		break;
+	}
+	case MESSAGE_PLAYER_KILL: {
+		player_kill_message_t *sm = (player_kill_message_t *) data;
+		player_t *player = game_player(game, sm->player_id);
+		player->status = 0;
+		player->team = 0;
+		break;
+	}
+	case MESSAGE_ACCEPT: {
+		accept_message_t *am = (accept_message_t *) data;
+		local_player = game_player(game, am->player_id);
+		printf("Spwan as %d.%d\n", local_player->team->id, local_player->id);
+		break;
+	}
+	case MESSAGE_PLAYER_UPDATE: {
+		player_update_message_t *um = (player_update_message_t *) data;
+		player_t *player = game_player(game, um->player_id);
+		player->x = um->x;
+		player->y = um->y;
+		player->z = um->z;
+		player->vx = um->vx;
+		player->vy = um->vy;
+		player->vz = um->vz;
+		break;
+	}
+	case MESSAGE_PLAYER_ACCELERATE: {
+		player_accelerate_message_t *um = (player_accelerate_message_t *) data;
+		player_t *player = game_player(game, um->player_id);
+		player->vx += um->x;
+		player->vy += um->y;
+		player->vz += um->z;
+		break;
+	}
+	case MESSAGE_BOMB_DROP: {
+		bomb_drop_meesage_t *m = (bomb_drop_meesage_t *) data;
+		bomb_t *bomb = game_spawn_bomb(game);
+		if (bomb == NULL)
+			return;
+		bomb->x = m->x;
+		bomb->y = m->y;
+		bomb->z = m->z;
+		bomb->vx = m->vx;
+		bomb->vy = m->vy;
+		bomb->vz = m->vz;
+		bomb->ttl = m->ttl;
+		if (client_peer == NULL) {
+			ENetPacket * packet = enet_packet_create(data, length,
+					ENET_PACKET_FLAG_RELIABLE);
+			enet_host_broadcast(host, 0, packet);
+		}
+		break;
+	}
+	};
+}
 void service_network(game_t *game) {
 	ENetEvent event;
 
@@ -253,63 +344,8 @@ void service_network(game_t *game) {
 			break;
 
 		case ENET_EVENT_TYPE_RECEIVE: {
-#if 0
+			dispatch_message(event.packet->data, event.packet->dataLength, game);
-			printf(
-					"A packet of length %u was received from %s on channel %u.\n",
-					event.packet->dataLength, event.packet->data,
-					event.peer->data, event.channelID);
-#endif
-			/* Clean up the packet now that we're done using it. */
-			message_t *msg = (message_t *) event.packet->data;
-			switch (msg->msg_id) {
-			case MESSAGE_PLAYER_SPAWN: {
-				player_spawn_message_t *sm =
-						(player_spawn_message_t *) event.packet->data;
-				team_t *team = game_team(game, sm->team_id);
-				player_t *player = game_spawn_player_id(game, team,
-						sm->player_id);
-			}
-				break;
-			case MESSAGE_PLAYER_KILL: {
-				player_kill_message_t *sm =
-						(player_kill_message_t *) event.packet->data;
-				player_t *player = game_player(game, sm->player_id);
-				player->status = 0;
-				player->team = 0;
-			}
-				break;
-			case MESSAGE_ACCEPT: {
-				accept_message_t *am = (accept_message_t *) event.packet->data;
-				local_player = game_player(game, am->player_id);
-				printf("Spwan as %d.%d\n", local_player->team->id,
-						local_player->id);
-			}
-				break;
-			case MESSAGE_PLAYER_UPDATE: {
-				player_update_message_t *um =
-						(player_update_message_t *) event.packet->data;
-				player_t *player = game_player(game, um->player_id);
-				player->x = um->x;
-				player->y = um->y;
-				player->z = um->z;
-				player->vx = um->vx;
-				player->vy = um->vy;
-				player->vz = um->vz;
-			}
-				break;
-			case MESSAGE_PLAYER_ACCELERATE: {
-				player_accelerate_message_t *um =
-						(player_accelerate_message_t *) event.packet->data;
-				player_t *player = game_player(game, um->player_id);
-				player->vx += um->x;
-				player->vy += um->y;
-				player->vz += um->z;
-			}
-				break;
-			};
-
 			enet_packet_destroy(event.packet);
-
 			break;
 		}
 		case ENET_EVENT_TYPE_DISCONNECT:
@@ -335,20 +371,38 @@ void service_network(game_t *game) {
 
 }
 
-void accelerate(double x, double y, double z) {
+void accelerate(game_t *game, double x, double y, double z) {
-	local_player->vx += x;
-	local_player->vy += y;
-	local_player->vz += z;
-	if (client_peer) {
 	player_accelerate_message_t msg;
 	msg.msg_id = MESSAGE_PLAYER_ACCELERATE;
 	msg.player_id = local_player->id;
 	msg.x = x;
 	msg.y = y;
 	msg.z = z;
+	if (client_peer) {
 		ENetPacket * packet = enet_packet_create(&msg, sizeof(msg),
 				ENET_PACKET_FLAG_RELIABLE);
 		enet_peer_send(client_peer, 0, packet);
+	} else {
+		dispatch_message((uint8_t*) &msg, sizeof(msg), game);
+	}
+}
+
+void drop_bomb(game_t *game, double x, double y, double z, double ttl) {
+	bomb_drop_meesage_t msg;
+	msg.msg_id = MESSAGE_BOMB_DROP;
+	msg.x = x;
+	msg.y = y;
+	msg.z = z;
+	msg.vx = local_player->vx;
+	msg.vy = local_player->vy;
+	msg.vz = local_player->vz;
+	msg.ttl = ttl;
+	if (client_peer) {
+		ENetPacket * packet = enet_packet_create(&msg, sizeof(msg),
+				ENET_PACKET_FLAG_RELIABLE);
+		enet_peer_send(client_peer, 0, packet);
+	} else {
+		dispatch_message((uint8_t*) &msg, sizeof(msg), game);
 	}
 }
 
@@ -398,9 +452,14 @@ void setup_explosion() {
 			textures[4]);
 }
 
+void explosion_callback(double x, double y, double z) {
+	explosion.add(x, y, z);
+}
+
 int main(int argc, char ** argv) {
 	int width, height, x, y, last_x, last_y;
-	double time, last_time, phi = 0.0, theta = 0.0, last_player_update;
+	double time, last_time, phi = 0.0, theta = 0.0, last_player_update,
+			last_bomb;
 	GLboolean running;
 	int server = 0;
 
@@ -430,6 +489,8 @@ int main(int argc, char ** argv) {
 	running = GL_TRUE;
 	last_time = glfwGetTime();
 	last_player_update = last_time;
+	last_bomb = last_time;
+	double camX, camY, camZ;
 	glfwGetMousePos(&last_x, &last_y);
 	while (running) {
 		// Get time and mouse position
@@ -447,27 +508,45 @@ int main(int argc, char ** argv) {
 		last_x = x;
 		last_y = y;
 
+		if (local_player) {
+			camX = local_player->x;
+			camY = local_player->y;
+			camZ = local_player->z;
+		} else {
+			camX = 1000.0;
+			camY = 1000.0;
+			camZ = 1000.0;
+		}
+
 		double rx = cos(phi) * cos(theta);
 		double ry = sin(theta);
 		double rz = sin(phi) * cos(theta);
 		double v = 50.0f * dt;
 		if (glfwGetKey('W')) {
-			accelerate(rx * v, ry * v, rz * v);
+			accelerate(&game, rx * v, ry * v, rz * v);
 		} else if (glfwGetKey('S')) {
-			accelerate(rx * -v, ry * -v, rz * -v);
+			accelerate(&game, rx * -v, ry * -v, rz * -v);
 		}
 
 		if (glfwGetKey('A')) {
-			accelerate(rz * v, 0, -rx * v);
+			accelerate(&game, rz * v, 0, -rx * v);
 		} else if (glfwGetKey('D')) {
-			accelerate(-rz * v, 0, rx * v);
+			accelerate(&game, -rz * v, 0, rx * v);
 		}
 
 		if (glfwGetKey(GLFW_KEY_SPACE)) {
-			accelerate(local_player->vx * -dt, local_player->vy * -dt,
+			accelerate(&game, local_player->vx * -dt, local_player->vy * -dt,
 					local_player->vz * -dt);
 		}
 
+		if (glfwGetKey(GLFW_KEY_LCTRL)) {
+			if (time - last_bomb > 5.0) {
+				last_bomb = time;
+				drop_bomb(&game, local_player->x + rx - 20.0, local_player->y
+						+ ry * -20.0, local_player->z + rz * -20.0, 5.0);
+			}
+		}
+
 		if (glfwGetKey(GLFW_KEY_ENTER)) {
 			explosion.add(200.0, 200.0, 200.0);
 		}
@@ -492,19 +571,9 @@ int main(int argc, char ** argv) {
 		// Select and setup the modelview matrix
 		glMatrixMode( GL_MODELVIEW);
 		glLoadIdentity();
-		if (local_player) {
+		gluLookAt(camX, camY, camZ, camX + cos(phi) * cos(theta) * 10.0f, camY
-			gluLookAt(local_player->x, local_player->y,
+				+ sin(theta) * 10.0f, camZ + sin(phi) * cos(theta) * 10.0f, // View-point
-					local_player->z, // Eye-position
-					local_player->x + cos(phi) * cos(theta) * 10.0f,
-					local_player->y + sin(theta) * 10.0f, local_player->z
-							+ sin(phi) * cos(theta) * 10.0f, // View-point
 				0.0f, 1.0f, 0.0f); // Up-vector
-		} else {
-			gluLookAt(100.0f, 100.0f, 100.0f, // Eye-position
-					100.0f + cos(phi) * cos(theta) * 10.0f, 100.0f + sin(theta)
-							* 10.0f, 100.0f + sin(phi) * cos(theta) * 10.0f, // View-point
-					0.0f, 1.0f, 0.0f); // Up-vector
-		}
 
 		service_network(&game);
 		if (server) {
@@ -515,6 +584,7 @@ int main(int argc, char ** argv) {
 		}
 
 		game_update_players(&game, dt);
+		game_update_bombs(&game, dt, explosion_callback);
 
 		glEnable( GL_LIGHT0);
 		glEnable( GL_LIGHTING);
@@ -534,11 +604,13 @@ int main(int argc, char ** argv) {
 		for (i = 0; i < GAME_PLAYER_COUNT; i++)
 			draw_player(&game.player[i]);
 
+		for (i = 0; i < GAME_BOMB_COUNT; i++)
+			draw_bomb(&game.bomb[i]);
+
 		glDisable(GL_LIGHT0);
 		glDisable(GL_LIGHTING);
 		glDisable(GL_CULL_FACE);
-		explosion.update(dt * 1000.0, local_player->x, local_player->y,
+		explosion.update(dt * 1000.0, camX, camY, camZ);
-				local_player->z);
 		explosion.render();
 
 		// Swap buffers