Create Beginners_-_Structs_arrays2.c

Beginners_-_Structs_arrays2.c

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+
+#include "raylib.h"
+#define MAX_BULLETS 10
+
+struct blueBullet{
+    bool active;
+    Vector2 position;
+    Vector2 movement;
+}blueBullet;
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib example.");
+ 
+    // This is one way to create a new array of struct!
+    struct blueBullet arr_blueBullet[2] =       {  
+                                                {true,(Vector2){400,200},(Vector2){2.5f,0.0f}},
+                                                {true,(Vector2){400,200},(Vector2){-2.5f,0.0f}}
+                                                };
+ 
+    // This is another way of creating a array of struct.
+    struct blueBullet arr_blueBullet2[MAX_BULLETS];
+    
+    for(int i=0;i<MAX_BULLETS;i++){
+        arr_blueBullet2[i].active = true;
+        arr_blueBullet2[i].position = (Vector2){400,200};
+        arr_blueBullet2[i].movement = (Vector2){(float)GetRandomValue(-5,5),(float)GetRandomValue(-5,5)};
+    }
+ 
+    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
+        //----------------------------------------------------------------------------------
+        // Update blueBullets
+        // Note: I had to use the += character since the + character alone did not seem to work.
+        for(int i=0;i<2;i++){
+            if(arr_blueBullet[i].active){
+                arr_blueBullet[i].position.x += arr_blueBullet[i].movement.x;
+                arr_blueBullet[i].position.y += arr_blueBullet[i].movement.y;
+                // If outside the screen reset position.
+                if(     arr_blueBullet[i].position.x<-10 || 
+                        arr_blueBullet[i].position.x>screenWidth+10 || 
+                        arr_blueBullet[i].position.y<-10 || 
+                        arr_blueBullet[i].position.y>screenHeight-10){                    
+                    arr_blueBullet[i].position = (Vector2){400,200};
+                }
+            }
+        }
+
+        // Update bluebullets2
+        for(int i=0;i<MAX_BULLETS;i++){
+            if(arr_blueBullet2[i].active){
+                arr_blueBullet2[i].position.x += arr_blueBullet2[i].movement.x;
+                arr_blueBullet2[i].position.y += arr_blueBullet2[i].movement.y;
+                // If outside the screen reset position.
+                if(     arr_blueBullet2[i].position.x<-10 || 
+                        arr_blueBullet2[i].position.x>screenWidth+10 || 
+                        arr_blueBullet2[i].position.y<-10 || 
+                        arr_blueBullet2[i].position.y>screenHeight-10){                    
+                    arr_blueBullet2[i].position = (Vector2){400,200};
+                }
+
+            }
+        }
+        
+        //----------------------------------------------------------------------------------
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+            
+            // Draw blueBullets
+            for(int i=0;i<2;i++){
+                if(arr_blueBullet[i].active){
+                    DrawRectangle(arr_blueBullet[i].position.x,arr_blueBullet[i].position.y,5,5,BLUE);
+                }
+            }
+
+            // Draw blueBullets2
+            for(int i=0;i<MAX_BULLETS;i++){
+                if(arr_blueBullet2[i].active){
+                    DrawRectangle(arr_blueBullet2[i].position.x,arr_blueBullet2[i].position.y,5,5,BLUE);
+                }
+            }
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+
+
+}