init

.gitignore

@@ -0,0 +1,4 @@
+*.swp
+game
+wasm/
+raylib/

LICENSE.txt

@@ -0,0 +1,201 @@
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+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
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+   limitations under the License.

README.md

@@ -0,0 +1,21 @@
+# Blobby Beachball
+
+Don't drop the ball!
+
+__Keys__: WASD + Arrows
+
+## Build
+
+Requires [raylib](https://raylib.com) and a C compiler.
+
+Can be build locally using `run.sh`, or for WebAssembly using `wasm.sh`.
+
+### WASM
+
+Install [emcc](https://emscripten.org/docs/getting_started/downloads.html),
+extract [`raylib-5.5_webassembly.zip`](https://github.com/raysan5/raylib/releases)
+in this directory as `raylib/`, then run `wasm.sh`.
+
+## Play
+
+[At alloca.space](https://alloca.space/creativity/games/blobbybeach/index.html).

main.c

@@ -0,0 +1,379 @@
+#include "math.h"
+#include "raylib/include/raylib.h"
+
+#define FPS 60
+#define FRAME_SPEED 8
+#define SCREEN_WIDTH 640
+#define SCREEN_HEIGHT 480
+#define SPRITE_SIZE 64
+#define BOTTOM_POSITION ((float)SCREEN_HEIGHT - (float)SPRITE_SIZE)
+
+/* Player */
+
+typedef struct {
+	Texture2D texture;
+	Rectangle frame;
+	int counter;
+	int speed;
+	int current;
+	int total_frames;
+} Graphics;
+
+void updateGraphics(Graphics* graphics) {
+	// update animation
+	graphics->counter++;
+
+	if (graphics->counter >= (FPS/graphics->speed)) {
+		graphics->counter = 0;
+		graphics->current++;
+
+		if (graphics->current >= graphics->total_frames) graphics->current = 0;
+
+		graphics->frame.y = (float)graphics->current * (float)graphics->texture.height/graphics->total_frames;
+	}
+}
+
+typedef struct {
+	int up;
+	int left;
+	int right;
+} Keys;
+
+typedef struct {
+	Vector2 position;
+	Vector2 acceleration;
+	Graphics graphics;
+	Keys keys;
+} Player;
+
+Player newPlayer(const char* path, Keys keys, float position) {
+	Texture2D texture = LoadTexture(path);
+	Graphics graphics = {
+		.texture = texture,
+		.frame = { 0.0f, 0.0f, (float)SPRITE_SIZE, (float)SPRITE_SIZE },
+		.counter = 0,
+		.speed = 8,
+		.current = 0,
+		.total_frames = 20,
+	};
+
+
+	Player player = {
+		.position = { position - (float)SPRITE_SIZE / 2, BOTTOM_POSITION },
+		.acceleration = { (float)0, (float)0 },
+		.graphics = graphics,
+		.keys = keys
+	};
+	return player;
+}
+
+void updatePlayer(Player* player, Sound* jump) {
+	// update animation
+	updateGraphics(&(player->graphics));
+
+	// handle inputs X
+	if (IsKeyDown(player->keys.right)) { player->acceleration.x += 0.25f; }
+	if (IsKeyDown(player->keys.left)) { player->acceleration.x -= 0.25f; }
+	if (!IsKeyDown(player->keys.left) && !IsKeyDown(player->keys.right)) {
+		if (player->acceleration.x > 0) {
+			player->acceleration.x -= 0.2f;
+		}
+		else if (player->acceleration.x < 0) {
+			player->acceleration.x += 0.2f;
+		}
+	}
+	// handle inputs Y
+	if (IsKeyDown(player->keys.up) && player->position.y == BOTTOM_POSITION) {
+		player->acceleration.y -= 7.0f;
+		PlaySound(*jump);
+	}
+	if (player->position.y < BOTTOM_POSITION) {
+		player->acceleration.y += 0.28f;
+	}
+
+	// fix acceleration
+	if (player->acceleration.x > 6.0f) {
+		player->acceleration.x = 6.0f;
+	}
+	else if (player->acceleration.x < -6.0f) {
+		player->acceleration.x = -6.0f;
+	}
+	else if (-0.15f < player->acceleration.x && player->acceleration.x < 0.15f)  {
+		player->acceleration.x = 0.0f;
+	}
+
+	// update position
+	player->position.y += player->acceleration.y;
+	if (player->position.y > BOTTOM_POSITION) {
+		player->position.y = BOTTOM_POSITION;
+		player->acceleration.y = 0.0f;
+	}
+
+	player->position.x += player->acceleration.x;
+	if (player->position.x > SCREEN_WIDTH - SPRITE_SIZE) {
+		player->position.x = SCREEN_WIDTH - SPRITE_SIZE;
+		player->acceleration.x = 0.0f;
+	}
+	else if (player->position.x < 0) {
+		player->position.x = 0;
+		player->acceleration.x = 0.0f;
+	}
+}
+
+Rectangle getPlayerBox(const Player* player) {
+	Rectangle rectangle = {
+		player->position.x,
+		player->position.y,
+		SPRITE_SIZE,
+		SPRITE_SIZE,
+	};
+	return rectangle;
+}
+
+/* Ball */
+
+typedef struct {
+	Vector2 position;
+	Vector2 acceleration;
+	Vector2 origin;
+	float rotation;
+	Texture2D texture;
+	Rectangle frame;
+} Ball;
+
+Ball newBall(const char* path) {
+	Texture2D texture = LoadTexture(path);
+
+	Ball ball = {
+		.position = { (float)SCREEN_WIDTH/2 - (float)SPRITE_SIZE / 2, SCREEN_HEIGHT/2 },
+		.acceleration = { (float)-3.0f, (float)-8.0f },
+		.origin = { (float)SPRITE_SIZE / 2, (float)SPRITE_SIZE / 2 },
+		.rotation = (float)0.0f,
+		.texture = texture,
+		.frame = { 0.0f, 0.0f, (float)SPRITE_SIZE, (float)SPRITE_SIZE },
+	};
+	return ball;
+}
+
+Rectangle getBallBox(const Ball* ball) {
+	Rectangle rectangle = {
+		ball->position.x,
+		ball->position.y,
+		SPRITE_SIZE,
+		SPRITE_SIZE,
+	};
+	return rectangle;
+}
+
+float min(float a, float b) {
+	return a < b ? a : b;
+}
+
+typedef enum {
+	Air,
+	Dropped,
+	Saved,
+} BallStatus;
+
+BallStatus updateBall(Ball* ball, const Player* player1, const Player* player2) {
+	BallStatus status = Air;
+
+	// collision
+	bool collision1 = CheckCollisionRecs(getBallBox(ball), getPlayerBox(player1));
+	bool collision2 = CheckCollisionRecs(getBallBox(ball), getPlayerBox(player2));
+
+	if (collision1 && collision2) {
+		status = Saved;
+		ball->acceleration.y = -8.0f + min(min(0, player1->acceleration.y), player2->acceleration.y);
+		ball->acceleration.x = 1.3f + player1->acceleration.x;
+		if (fabsf(player1->acceleration.x) > fabsf(player1->acceleration.x)) {
+			ball->acceleration.x = 1.3f + player1->acceleration.x;
+		} else {
+			ball->acceleration.x = 1.2f + player2->acceleration.x;
+		}
+	}
+	else if (collision1) {
+		status = Saved;
+		ball->acceleration.y = -8.0f + min(0, player1->acceleration.y);
+		ball->acceleration.x += 1.0f * player1->acceleration.x;
+	}
+	else if (collision2) {
+		status = Saved;
+		ball->acceleration.y = -7.0f + min(0, player2->acceleration.y);
+		ball->acceleration.x += 1.0f * player2->acceleration.x;
+	}
+	// physics
+	// y
+	else if (ball->position.y >= BOTTOM_POSITION) {
+		status = Dropped;
+		ball->position.y = BOTTOM_POSITION;
+
+		if (-0.5f < ball->acceleration.y && ball->acceleration.y < 0.5f) {
+			ball->acceleration.y = 0;
+		}
+		else {
+			ball->acceleration.y *= -0.9f;
+		}
+	}
+	if (ball->position.y < BOTTOM_POSITION) {
+		ball->acceleration.y += 0.28f;
+	}
+
+	ball->position.y += ball->acceleration.y;
+
+	// x
+	if (ball->position.x > SCREEN_WIDTH - SPRITE_SIZE) {
+		ball->position.x = SCREEN_WIDTH - SPRITE_SIZE;
+		ball->acceleration.x *= -0.9f;
+	}
+	else if (ball->position.x < 0) {
+		ball->position.x = 0;
+		ball->acceleration.x *= -0.9f;
+	}
+	if (ball->acceleration.x < -10.0f) {
+		ball->acceleration.x = -10.0f;
+	}
+	if (ball->acceleration.x > 10.0f) {
+		ball->acceleration.x = 10.0f;
+	}
+	ball->position.x += ball->acceleration.x;
+
+	ball->rotation += ball->acceleration.x;
+
+	return status;
+}
+
+typedef struct {
+	Graphics graphics;
+	Vector2 position;
+} Background;
+
+Background newBackground(const char* path) {
+	Texture2D texture = LoadTexture(path);
+	Graphics graphics = {
+		.texture = texture,
+		.frame = { 0.0f, 0.0f, (float)SCREEN_WIDTH, (float)SCREEN_HEIGHT },
+		.counter = 0,
+		.speed = 4,
+		.current = 0,
+		.total_frames = 24,
+	};
+
+
+	Background background = {
+		.graphics = graphics,
+		.position = { 0, 0 },
+	};
+	return background;
+}
+
+void updateBackground(Background* background) {
+	updateGraphics(&background->graphics);
+}
+
+/* Main */
+int main(void) {
+	InitWindow(SCREEN_WIDTH, SCREEN_HEIGHT, "Volleyball");
+	InitAudioDevice();
+
+	// sounds
+	Music music = LoadMusicStream("assets/blobbybeach.mp3");
+	Sound jump = LoadSound("assets/jump.wav");
+	Sound floor = LoadSound("assets/floor.wav");
+	Sound bop = LoadSound("assets/bop.wav");
+
+	Background background = newBackground("assets/background.png");
+
+	Keys pink_keys = { .up = KEY_W, .left = KEY_A, .right = KEY_D };
+	Player pink_player = newPlayer("assets/pink_player.png", pink_keys, (float)SCREEN_WIDTH/4);
+	Keys blue_keys = { .up = KEY_UP, .left = KEY_LEFT, .right = KEY_RIGHT };
+	Player blue_player = newPlayer("assets/blue_player.png", blue_keys, (float)SCREEN_WIDTH/4 * 3);
+	Ball ball = newBall("assets/ball.png");
+
+	unsigned current_score = 0;
+	unsigned best_record = 0;
+	unsigned cooloff = 0;
+	bool pause_music = false;
+
+    PlayMusicStream(music);
+
+	SetTargetFPS(FPS);
+
+	// Game loop
+	while (!WindowShouldClose())
+	{
+		UpdateMusicStream(music);
+
+        // Restart music playing (stop and play)
+        if (IsKeyPressed(KEY_M))
+        {
+			if (pause_music) {
+				PlayMusicStream(music);
+				pause_music = false;
+			}
+			else {
+				StopMusicStream(music);
+				pause_music = true;
+			}
+        }
+
+		// Update
+		if (cooloff > 0) { cooloff--; }
+		updateBackground(&background);
+		updatePlayer(&pink_player, &jump);
+		updatePlayer(&blue_player, &jump);
+		BallStatus ball_status = updateBall(&ball, &pink_player, &blue_player);
+
+		switch (ball_status) {
+		case Saved:
+			if (cooloff == 0) {
+				cooloff = 10;
+				current_score++;
+				if (current_score > best_record) {
+					best_record = current_score;
+				}
+				PlaySound(bop);
+			}
+			break;
+		case Dropped:
+			current_score = 0;
+			PlaySound(floor);
+			break;
+		default:
+			break;
+		}
+
+		// Draw
+		BeginDrawing();
+
+		ClearBackground(RAYWHITE);
+
+		DrawTextureRec(background.graphics.texture, background.graphics.frame, background.position, WHITE);
+
+		DrawTextureRec(pink_player.graphics.texture, pink_player.graphics.frame, pink_player.position, WHITE);
+		DrawTextureRec(blue_player.graphics.texture, blue_player.graphics.frame, blue_player.position, WHITE);
+		//DrawTextureRec(ball.texture, ball.frame, ball.position, WHITE);
+		Rectangle dest = { ball.position.x + SPRITE_SIZE/2, ball.position.y + SPRITE_SIZE/2, ball.origin.x * 2, ball.origin.y * 2 };
+		DrawTexturePro(ball.texture, ball.frame, dest, ball.origin, ball.rotation, WHITE);
+
+		DrawRectangle(0, 0, 240, 90, (Color){ 0, 10, 60, 120 });
+
+		if (current_score == best_record) {
+			DrawText(TextFormat("Best Record: %i", best_record), 10, 10, 24 + cooloff / 2, PINK);
+			DrawText(TextFormat("Score: %i", current_score), 10, 50, 24 + cooloff / 2, PINK);
+		} else {
+			DrawText(TextFormat("Best Record: %i", best_record), 10, 10, 24, BLACK);
+			DrawText(TextFormat("Score: %i", current_score), 10, 50, 24 + cooloff / 2, WHITE);
+		}
+
+		EndDrawing();
+	}
+
+	// De-Initialization
+	UnloadTexture(pink_player.graphics.texture);
+	UnloadTexture(blue_player.graphics.texture);
+	UnloadTexture(ball.texture);
+	CloseWindow();
+
+	return 0;
+}

run.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+cc main.c -lraylib -lGL -lm -lpthread -ldl -lrt -lX11 -o game && ./game

wasm.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+mkdir -p wasm
+
+emcc -o wasm/game.html main.c -Os -Wall ./raylib/lib/libraylib.a -I. -I./raylib.h -L. -L./raylib/lib/librarylib.a -s USE_GLFW=3 -s ASYNCIFY -DPLATFORM_WEB --preload-file assets -s -s TOTAL_MEMORY=67108864 -s ASSERTIONS=1