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gorilas.c

+/*******************************************************************************************
+*
+*   raylib - sample game: gorilas
+*
+*   Sample game Marc Palau and Ramon Santamaria
+*
+*   This game has been created using raylib v1.3 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2015 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <math.h>
+
+#if defined(PLATFORM_WEB)
+    #include <emscripten/emscripten.h>
+#endif
+
+//----------------------------------------------------------------------------------
+// Some Defines
+//----------------------------------------------------------------------------------
+#define MAX_BUILDINGS                    15
+#define MAX_EXPLOSIONS                  200
+#define MAX_PLAYERS                       2
+
+#define BUILDING_RELATIVE_ERROR          30        // Building size random range %
+#define BUILDING_MIN_RELATIVE_HEIGHT     20        // Minimum height in % of the screenHeight
+#define BUILDING_MAX_RELATIVE_HEIGHT     60        // Maximum height in % of the screenHeight
+#define BUILDING_MIN_GRAYSCALE_COLOR    120        // Minimum gray color for the buildings
+#define BUILDING_MAX_GRAYSCALE_COLOR    200        // Maximum gray color for the buildings
+
+#define MIN_PLAYER_POSITION               5        // Minimum x position %
+#define MAX_PLAYER_POSITION              20        // Maximum x position %
+
+#define GRAVITY                       9.81f
+#define DELTA_FPS                        60
+
+//----------------------------------------------------------------------------------
+// Types and Structures Definition
+//----------------------------------------------------------------------------------
+typedef struct Player {
+    Vector2 position;
+    Vector2 size;
+
+    Vector2 aimingPoint;
+    int aimingAngle;
+    int aimingPower;
+
+    Vector2 previousPoint;
+    int previousAngle;
+    int previousPower;
+
+    Vector2 impactPoint;
+
+    bool isLeftTeam;                // This player belongs to the left or to the right team
+    bool isPlayer;                  // If is a player or an AI
+    bool isAlive;
+} Player;
+
+typedef struct Building {
+    Rectangle rectangle;
+    Color color;
+} Building;
+
+typedef struct Explosion {
+    Vector2 position;
+    int radius;
+    bool active;
+} Explosion;
+
+typedef struct Ball {
+    Vector2 position;
+    Vector2 speed;
+    int radius;
+    bool active;
+} Ball;
+
+//------------------------------------------------------------------------------------
+// Global Variables Declaration
+//------------------------------------------------------------------------------------
+static const int screenWidth = 800;
+static const int screenHeight = 450;
+
+static bool gameOver = false;
+static bool pause = false;
+
+static Player player[MAX_PLAYERS] = { 0 };
+static Building building[MAX_BUILDINGS] = { 0 };
+static Explosion explosion[MAX_EXPLOSIONS] = { 0 };
+static Ball ball = { 0 };
+
+static int playerTurn = 0;
+static bool ballOnAir = false;
+
+//------------------------------------------------------------------------------------
+// Module Functions Declaration (local)
+//------------------------------------------------------------------------------------
+static void InitGame(void);         // Initialize game
+static void UpdateGame(void);       // Update game (one frame)
+static void DrawGame(void);         // Draw game (one frame)
+static void UnloadGame(void);       // Unload game
+static void UpdateDrawFrame(void);  // Update and Draw (one frame)
+
+// Additional module functions
+static void InitBuildings(void);
+static void InitPlayers(void);
+static bool UpdatePlayer(int playerTurn);
+static bool UpdateBall(int playerTurn);
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization (Note windowTitle is unused on Android)
+    //---------------------------------------------------------
+    InitWindow(screenWidth, screenHeight, "sample game: gorilas");
+
+    InitGame();
+
+#if defined(PLATFORM_WEB)
+    emscripten_set_main_loop(UpdateDrawFrame, 0, 1);
+#else
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+    
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update and Draw
+        //----------------------------------------------------------------------------------
+        UpdateDrawFrame();
+        //----------------------------------------------------------------------------------
+    }
+#endif
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    //UnloadGame();         // Unload loaded data (textures, sounds, models...)
+    
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}
+
+//------------------------------------------------------------------------------------
+// Module Functions Definitions (local)
+//------------------------------------------------------------------------------------
+
+// Initialize game variables
+void InitGame(void)
+{
+    // Init shoot
+    ball.radius = 10;
+    ballOnAir = false;
+    ball.active = false;
+
+    InitBuildings();
+    InitPlayers();
+    
+    // Init explosions
+    for (int i = 0; i < MAX_EXPLOSIONS; i++)
+    {
+        explosion[i].position = (Vector2){ 0.0f, 0.0f };
+        explosion[i].radius = 30;
+        explosion[i].active = false;
+    }
+}
+
+// Update game (one frame)
+void UpdateGame(void)
+{
+    if (!gameOver)
+    {
+        if (IsKeyPressed('P')) pause = !pause;
+
+        if (!pause)
+        {
+            if (!ballOnAir) 
+                ballOnAir = UpdatePlayer(playerTurn); // If we are aiming
+            else
+            {
+                if (UpdateBall(playerTurn))                       // If collision
+                {
+                    // Game over logic
+                    bool leftTeamAlive = false;
+                    bool rightTeamAlive = false;
+
+                    for (int i = 0; i < MAX_PLAYERS; i++)
+                    {
+                        if (player[i].isAlive)
+                        {
+                            if (player[i].isLeftTeam) leftTeamAlive = true;
+                            if (!player[i].isLeftTeam) rightTeamAlive = true;
+                        }
+                    }
+                    
+                    if (leftTeamAlive && rightTeamAlive)
+                    {
+                        ballOnAir = false;
+                        ball.active = false;
+
+                        playerTurn++;
+                       // playerTurn==0;
+
+                        if (playerTurn == MAX_PLAYERS) playerTurn = 0;
+                    }
+                    else
+                    {
+                        UnloadGame();
+                    }
+                }
+            }
+        }
+    }
+
+}
+
+// Draw game (one frame)
+void DrawGame(void)
+{
+    BeginDrawing();
+
+        ClearBackground(RAYWHITE);//910
+
+        if (!gameOver)
+        {
+            // Draw buildings
+            for (int i = 0; i < MAX_BUILDINGS; i++) DrawRectangleRec(building[i].rectangle, building[i].color);//1076
+
+            // Draw explosions
+            for (int i = 0; i < MAX_EXPLOSIONS; i++)
+            {
+                if (explosion[i].active) DrawCircle(explosion[i].position.x, explosion[i].position.y, explosion[i].radius, RAYWHITE);//1064
+            }
+            
+            // Draw players
+            for (int i = 0; i < MAX_PLAYERS; i++)
+            {
+                if (player[i].isAlive)
+                {
+                    if (player[i].isLeftTeam) DrawRectangle(player[i].position.x - player[i].size.x/2, player[i].position.y - player[i].size.y/2,//1074
+                                                             player[i].size.x, player[i].size.y, GREEN);
+                    else DrawRectangle(player[i].position.x - player[i].size.x/2, player[i].position.y - player[i].size.y/2,
+                                                             player[i].size.x, player[i].size.y, RED);
+                }
+            }
+
+            // Draw ball
+            if (ball.active) DrawCircle(ball.position.x, ball.position.y, ball.radius, SKYBLUE);
+
+            // Draw the angle and the power of the aim, and the previous ones
+            if (!ballOnAir)
+            {
+                // Draw shot information
+                /*
+                if (player[playerTurn].isLeftTeam)
+                {
+                    DrawText(TextFormat("Previous Point %i, %i", (int)player[playerTurn].previousPoint.x, (int)player[playerTurn].previousPoint.y), 20, 20, 20, DARKBLUE);
+                    DrawText(TextFormat("Previous Angle %i", player[playerTurn].previousAngle), 20, 50, 20, DARKBLUE);
+                    DrawText(TextFormat("Previous Power %i", player[playerTurn].previousPower), 20, 80, 20, DARKBLUE);
+                    DrawText(TextFormat("Aiming Point %i, %i", (int)player[playerTurn].aimingPoint.x, (int)player[playerTurn].aimingPoint.y), 20, 110, 20, DARKBLUE);
+                    DrawText(TextFormat("Aiming Angle %i", player[playerTurn].aimingAngle), 20, 140, 20, DARKBLUE);
+                    DrawText(TextFormat("Aiming Power %i", player[playerTurn].aimingPower), 20, 170, 20, DARKBLUE);
+                }
+                else
+                {
+                    DrawText(TextFormat("Previous Point %i, %i", (int)player[playerTurn].previousPoint.x, (int)player[playerTurn].previousPoint.y), screenWidth*3/4, 20, 20, DARKBLUE);
+                    DrawText(TextFormat("Previous Angle %i", player[playerTurn].previousAngle), screenWidth*3/4, 50, 20, DARKBLUE);
+                    DrawText(TextFormat("Previous Power %i", player[playerTurn].previousPower), screenWidth*3/4, 80, 20, DARKBLUE);
+                    DrawText(TextFormat("Aiming Point %i, %i", (int)player[playerTurn].aimingPoint.x, (int)player[playerTurn].aimingPoint.y), screenWidth*3/4, 110, 20, DARKBLUE);
+                    DrawText(TextFormat("Aiming Angle %i", player[playerTurn].aimingAngle), screenWidth*3/4, 140, 20, DARKBLUE);
+                    DrawText(TextFormat("Aiming Power %i", player[playerTurn].aimingPower), screenWidth*3/4, 170, 20, DARKBLUE);
+                }
+                */
+                
+                // Draw aim
+                if (player[playerTurn].isLeftTeam)
+                {
+                    // Previous aiming
+                    DrawTriangle((Vector2){ player[playerTurn].position.x - player[playerTurn].size.x/4, player[playerTurn].position.y - player[playerTurn].size.y/4 },
+                                 (Vector2){ player[playerTurn].position.x + player[playerTurn].size.x/4, player[playerTurn].position.y + player[playerTurn].size.y/4 },
+                                 player[playerTurn].previousPoint, GRAY);//1085
+
+                    // Actual aiming
+                    DrawTriangle((Vector2){ player[playerTurn].position.x - player[playerTurn].size.x/4, player[playerTurn].position.y - player[playerTurn].size.y/4 },
+                                 (Vector2){ player[playerTurn].position.x + player[playerTurn].size.x/4, player[playerTurn].position.y + player[playerTurn].size.y/4 },
+                                 player[playerTurn].aimingPoint, DARKGREEN);
+                }
+                else
+                {
+                    // Previous aiming
+                    DrawTriangle((Vector2){ player[playerTurn].position.x - player[playerTurn].size.x/4, player[playerTurn].position.y + player[playerTurn].size.y/4 },
+                                 (Vector2){ player[playerTurn].position.x + player[playerTurn].size.x/4, player[playerTurn].position.y - player[playerTurn].size.y/4 },
+                                 player[playerTurn].previousPoint, GRAY);
+
+                    // Actual aiming
+                    DrawTriangle((Vector2){ player[playerTurn].position.x - player[playerTurn].size.x/4, player[playerTurn].position.y + player[playerTurn].size.y/4 },
+                                 (Vector2){ player[playerTurn].position.x + player[playerTurn].size.x/4, player[playerTurn].position.y - player[playerTurn].size.y/4 },
+                                 player[playerTurn].aimingPoint, MAROON);
+                }
+            }
+
+            if (pause) DrawText("GAME PAUSED", screenWidth/2 - MeasureText("GAME PAUSED", 40)/2, screenHeight/2 - 40, 40, GRAY);//1218,1226
+        }
+        
+
+    EndDrawing();//912
+
+}
+
+// Unload game variables
+void UnloadGame(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+    InitWindow(screenWidth, screenHeight, "raylib [audio] example - music playing (streaming)");
+    InitAudioDevice();              // Initialize audio device 1398
+    Music music = LoadMusicStream("123.mp3");
+    PlayMusicStream(music);//1432
+    float timePlayed = 0.0f;
+    bool pause = false;
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        UpdateMusicStream(music);   // Update music buffer with new stream data 1433
+        // Get timePlayed scaled to bar dimensions (400 pixels)
+        timePlayed = GetMusicTimePlayed(music)/GetMusicTimeLength(music)*400;
+        if (timePlayed > 399) StopMusicStream(music);
+        BeginDrawing();
+            ClearBackground(RAYWHITE);
+            DrawRectangle(200, 200, 400, 12, LIGHTGRAY);
+            DrawRectangle(200, 200, (int)timePlayed, 12, PINK);
+            DrawRectangleLines(200, 200, 400, 12, GRAY);
+            DrawText("  YOU WIN BRAVO GOOD GAME !   !", 215, 250, 20, VIOLET);
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadMusicStream(music);   // Unload music stream buffers from RAM
+    CloseAudioDevice();         // Close audio device (music streaming is automatically stopped)
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+}
+
+// Update and Draw (one frame)
+void UpdateDrawFrame(void)
+{
+    UpdateGame();
+    DrawGame();
+}
+
+//--------------------------------------------------------------------------------------
+// Additional module functions
+//--------------------------------------------------------------------------------------
+static void InitBuildings(void)
+{
+    // Horizontal generation
+    int currentWidth = 0;
+
+    // We make sure the absolute error randomly generated for each building, has as a minimum value the screenWidth.
+    // This way all the screen will be filled with buildings. Each building will have a different, random width.
+
+    float relativeWidth = 100/(100 - BUILDING_RELATIVE_ERROR);
+    float buildingWidthMean = (screenWidth*relativeWidth/MAX_BUILDINGS) + 1;        // We add one to make sure we will cover the whole screen.
+
+    // Vertical generation
+    int currentHeighth = 0;
+    int grayLevel;
+
+    // Creation
+    for (int i = 0; i < MAX_BUILDINGS; i++)
+    {
+        // Horizontal
+        building[i].rectangle.x = currentWidth;
+        building[i].rectangle.width = GetRandomValue(buildingWidthMean*(100 - BUILDING_RELATIVE_ERROR/2)/100 + 1, buildingWidthMean*(100 + BUILDING_RELATIVE_ERROR)/100);
+
+        currentWidth += building[i].rectangle.width;
+
+        // Vertical
+        currentHeighth = GetRandomValue(BUILDING_MIN_RELATIVE_HEIGHT, BUILDING_MAX_RELATIVE_HEIGHT);
+        building[i].rectangle.y = screenHeight - (screenHeight*currentHeighth/100);
+        building[i].rectangle.height = screenHeight*currentHeighth/100 + 1;
+
+        // Color
+        grayLevel = GetRandomValue(BUILDING_MIN_GRAYSCALE_COLOR, BUILDING_MAX_GRAYSCALE_COLOR);
+        building[i].color = (Color){ grayLevel, grayLevel, grayLevel, 255 };
+    }
+}
+
+static void InitPlayers(void)
+{
+    for (int i = 0; i < MAX_PLAYERS; i++)
+    {
+        player[i].isAlive = true;
+
+        // Decide the team of this player
+        if (i % 2 == 0) player[i].isLeftTeam = true;
+        else player[i].isLeftTeam = false;
+
+        // Now there is no AI
+        player[i].isPlayer = true;
+
+        // Set size, by default by now
+        player[i].size = (Vector2){ 40, 40 };
+
+        // Set position
+        if (player[i].isLeftTeam) player[i].position.x = GetRandomValue(screenWidth*MIN_PLAYER_POSITION/100, screenWidth*MAX_PLAYER_POSITION/100);
+        else player[i].position.x = screenWidth - GetRandomValue(screenWidth*MIN_PLAYER_POSITION/100, screenWidth*MAX_PLAYER_POSITION/100);
+
+        for (int j = 0; j < MAX_BUILDINGS; j++)
+        {
+            if (building[j].rectangle.x > player[i].position.x)
+            {
+                // Set the player in the center of the building
+                player[i].position.x = building[j-1].rectangle.x + building[j-1].rectangle.width/2;
+                // Set the player at the top of the building
+                player[i].position.y = building[j-1].rectangle.y - player[i].size.y/2;
+                break;
+            }
+        }
+
+        // Set statistics to 0
+        player[i].aimingPoint = player[i].position;
+        player[i].previousAngle = 0;
+        player[i].previousPower = 0;
+        player[i].previousPoint = player[i].position;
+        player[i].aimingAngle = 0;
+        player[i].aimingPower = 0;
+
+        player[i].impactPoint = (Vector2){ -100, -100 };
+    }
+}
+
+static bool UpdatePlayer(int playerTurn)
+{
+    // If we are aiming at the firing quadrant, we calculate the angle
+    if (GetMousePosition().y <= player[playerTurn].position.y)
+    {
+        // Left team
+        if (player[playerTurn].isLeftTeam && GetMousePosition().x >= player[playerTurn].position.x)
+        {
+            // Distance (calculating the fire power)
+            player[playerTurn].aimingPower = sqrt(pow(player[playerTurn].position.x - GetMousePosition().x, 2) + pow(player[playerTurn].position.y - GetMousePosition().y, 2));
+            // Calculates the angle via arcsin
+            player[playerTurn].aimingAngle = asin((player[playerTurn].position.y - GetMousePosition().y)/player[playerTurn].aimingPower)*RAD2DEG;
+            // Point of the screen we are aiming at
+            player[playerTurn].aimingPoint = GetMousePosition();
+
+            // Ball fired
+            if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON))
+            {
+                player[playerTurn].previousPoint = player[playerTurn].aimingPoint;
+                player[playerTurn].previousPower = player[playerTurn].aimingPower;
+                player[playerTurn].previousAngle = player[playerTurn].aimingAngle;
+                ball.position = player[playerTurn].position;
+
+                return true;
+            }
+        }
+        // Right team
+        else if (!player[playerTurn].isLeftTeam && GetMousePosition().x <= player[playerTurn].position.x)
+        {
+            // Distance (calculating the fire power)
+            player[playerTurn].aimingPower = sqrt(pow(player[playerTurn].position.x - GetMousePosition().x, 2) + pow(player[playerTurn].position.y - GetMousePosition().y, 2));
+            // Calculates the angle via arcsin
+            player[playerTurn].aimingAngle = asin((player[playerTurn].position.y - GetMousePosition().y)/player[playerTurn].aimingPower)*RAD2DEG;
+            // Point of the screen we are aiming at
+            player[playerTurn].aimingPoint = GetMousePosition();
+
+            // Ball fired
+            if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON))
+            {
+                player[playerTurn].previousPoint = player[playerTurn].aimingPoint;
+                player[playerTurn].previousPower = player[playerTurn].aimingPower;
+                player[playerTurn].previousAngle = player[playerTurn].aimingAngle;
+                ball.position = player[playerTurn].position;
+
+                return true;
+            }
+        }
+        else
+        {
+            player[playerTurn].aimingPoint = player[playerTurn].position;
+            player[playerTurn].aimingPower = 0;
+            player[playerTurn].aimingAngle = 0;
+        }
+    }
+    else
+    {
+        player[playerTurn].aimingPoint = player[playerTurn].position;
+        player[playerTurn].aimingPower = 0;
+        player[playerTurn].aimingAngle = 0;
+    }
+
+    return false;
+}
+
+static bool UpdateBall(int playerTurn)
+{
+    static int explosionNumber = 0;
+
+    // Activate ball
+    if (!ball.active)
+    {
+        if (player[playerTurn].isLeftTeam)
+        {
+            ball.speed.x = cos(player[playerTurn].previousAngle*DEG2RAD)*player[playerTurn].previousPower*3/DELTA_FPS;
+            ball.speed.y = -sin(player[playerTurn].previousAngle*DEG2RAD)*player[playerTurn].previousPower*3/DELTA_FPS;
+            ball.active = true;
+        }
+        else
+        {
+            ball.speed.x = -cos(player[playerTurn].previousAngle*DEG2RAD)*player[playerTurn].previousPower*3/DELTA_FPS;
+            ball.speed.y = -sin(player[playerTurn].previousAngle*DEG2RAD)*player[playerTurn].previousPower*3/DELTA_FPS;
+            ball.active = true;
+        }
+    }
+
+    ball.position.x += ball.speed.x;
+    ball.position.y += ball.speed.y;
+    ball.speed.y += GRAVITY/DELTA_FPS;
+
+    // Collision
+    if (ball.position.x + ball.radius < 0) return true;
+    else if (ball.position.x - ball.radius > screenWidth) return true;
+    else
+    {
+        // Player collision
+        for (int i = 0; i < MAX_PLAYERS; i++)
+        {
+            if (CheckCollisionCircleRec(ball.position, ball.radius,  (Rectangle){ player[i].position.x - player[i].size.x/2, player[i].position.y - player[i].size.y/2,
+                                                                                  player[i].size.x, player[i].size.y }))
+            {
+                // We can't hit ourselves
+                if (i == playerTurn) return false;
+                else
+                {
+                    // We set the impact point
+                    player[playerTurn].impactPoint.x = ball.position.x;
+                    player[playerTurn].impactPoint.y = ball.position.y + ball.radius;
+
+                    // We destroy the player
+                    player[i].isAlive = false;
+                    return true;
+                }
+            }
+        }
+
+        // Building collision
+        // NOTE: We only check building collision if we are not inside an explosion
+        for (int i = 0; i < MAX_BUILDINGS; i++)
+        {
+            if (CheckCollisionCircles(ball.position, ball.radius, explosion[i].position, explosion[i].radius - ball.radius))
+            {
+                return false;
+            }
+        }
+
+        for (int i = 0; i < MAX_BUILDINGS; i++)
+        {
+            if (CheckCollisionCircleRec(ball.position, ball.radius, building[i].rectangle))
+            {
+                // We set the impact point
+                player[playerTurn].impactPoint.x = ball.position.x;
+                player[playerTurn].impactPoint.y = ball.position.y + ball.radius;
+
+                // We create an explosion
+                explosion[explosionNumber].position = player[playerTurn].impactPoint;
+                explosion[explosionNumber].active = true;
+                explosionNumber++;
+
+                return true;
+            }
+        }
+    }
+
+    return false;
+}