Create Example_-_2D_ShootBullets.c

Example_-_2D_ShootBullets.c

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+
+#include "raylib.h"
+// math.h is needed for cos and sin.
+#include <math.h>
+
+#define MAX_BULLETS 100
+#define MAX_BATCH_ELEMENTS 8192
+
+typedef struct Bullets{
+    Vector2 position;
+    bool active;
+    float angle;
+} Bullets;
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib example.");
+
+    Bullets *mybullets = (Bullets *)malloc(MAX_BULLETS*sizeof(Bullets));    // Bullets array
+    mybullets[0].active=false;
+    
+
+     // Create a Image in memory
+    RenderTexture2D target = LoadRenderTexture(32, 32);
+    
+    int sprite[8][8] = {
+    {0,2,1,0,0,1,2,0},
+    {2,1,0,2,2,0,1,2},
+    {1,0,2,1,1,2,0,1},
+    {0,2,1,1,1,1,2,0},
+    {0,2,1,1,1,1,2,0},
+    {1,0,2,1,1,2,0,1},
+    {2,1,0,2,2,0,1,2},
+    {0,2,1,0,0,1,2,0}};
+    
+    // Clear our texture(image) before entering the game loop
+    BeginTextureMode(target);    
+    ClearBackground(BLANK); // Make the entire Sprite Transparent.
+    EndTextureMode(); 
+    // Draw something on it.
+    for (int y=0;y<8;y++)
+    {
+        for (int x=0;x<8; x++)
+        {            
+            // Our sprite color 1
+            if (sprite[y][x]==1)
+            {
+                BeginTextureMode(target);    
+                DrawRectangle(x*4,y*4,4,4,WHITE);
+                EndTextureMode(); 
+            }
+            // Our sprite color 2
+            if (sprite[y][x]==2)
+            {
+                BeginTextureMode(target);    
+                DrawRectangle(x*4,y*4,4,4,RED);
+                EndTextureMode(); 
+            }            
+        }
+    }
+
+
+    
+    
+ 
+    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 the bullets
+        // Deactivate if outside window.
+        for(int i=0;i<MAX_BULLETS;i++){
+            if(mybullets[i].active){
+                mybullets[i].position.x+=(float)cos(mybullets[i].angle)*3;
+                mybullets[i].position.y+=(float)sin(mybullets[i].angle)*3;
+                if(mybullets[i].position.x<-50 || mybullets[i].position.x>screenWidth+50 || mybullets[i].position.y<-50 || mybullets[i].position.y>screenHeight+50){
+                    mybullets[i].active = false;
+                }                
+            }
+        }
+       // Shoot a bullet
+        if(IsMouseButtonReleased(0)){
+            for(int i=0;i<MAX_BULLETS;i++){    
+                if(mybullets[i].active==false){
+                    mybullets[i].active=true;
+                    mybullets[i].angle = GetRandomValue(0,359);
+                    mybullets[i].position = GetMousePosition();
+                    break;
+                }
+            }
+        }
+        //----------------------------------------------------------------------------------
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+                
+            DrawText("Press the left Mouse Button to Shoot button from mouse Pos.",0,100,20,BLACK);
+                
+            for(int i=0;i<MAX_BULLETS;i++){
+                if(mybullets[i].active){
+                    DrawTexture(target.texture,mybullets[i].position.x,mybullets[i].position.y,WHITE);
+            }}
+            
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    UnloadRenderTexture(target);    // Unload render texture    
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+
+
+}