add image texture loading

src/main.zig

@@ -59,10 +59,10 @@ const Particle = struct {
             self.show = 0;
         }
     }
-    pub fn spawn(self:*Self) void
+    pub fn spawn(self:*Self,xaccel : f32,yaccel : f32) void
     {
-        const xrnr = randMinMaxFloat(-1,1);
+        const xrnr = randMinMaxFloat(-1-xaccel,1+xaccel);
-        const yrnr = randMinMaxFloat(-0.5,0.5);
+        const yrnr = randMinMaxFloat(-0.5-yaccel,0.5+yaccel);
 
         self.lifespan = rand.intRangeAtMost(u8,75,255);
         self.acceleration.a.x = xrnr;
@@ -98,7 +98,7 @@ const Emitter = struct
             p.* = Particle{.velocity = .{.a = .{.x = 1,.y = -3}},.acceleration = .{.a = .{.x=xrnr,.y=yrnr}}};
         }
     }
-    pub fn emit(self:*Emitter,count : u32) void
+    pub fn emit(self:*Emitter,count : u32,xaccel : f32,yaccel : f32) void
     {
         var i : u32 = 0;
         for(self.particles) |*p|
@@ -106,7 +106,7 @@ const Emitter = struct
             if(p.show == 0)
             {   
                 i+=1;
-                p.spawn();
+                p.spawn(xaccel,yaccel);
             }
             if(i >= count)
             {
@@ -114,12 +114,11 @@ const Emitter = struct
             }
         }
     }
-    pub fn update(self:*Emitter) void
+    pub fn update(self:*Emitter,texture : rl.Texture2D) void
     {
         var posx : i32 = 0;
         var posy : i32 = 0;
 
-
         for (self.particles) |*p| {
             if(p.show == 1)
             {
@@ -135,7 +134,9 @@ const Emitter = struct
                 } else {
                     posy = 0;
                 }
-                    rl.drawRectangle(posx,posy,2,2,rl.Color{.r=p.position.a.color.r,.g=p.position.a.color.g,.b=p.position.a.color.b,.a=255});
+                    //rl.drawRectangle(posx,posy,2,2,rl.Color{.r=p.position.a.color.r,.g=p.position.a.color.g,.b=p.position.a.color.b,.a=255});
+                    rl.drawTexture(texture,posx,posy,rl.Color.white);
+
             }
         }
     }
@@ -144,6 +145,10 @@ fn ItoF(x:i32) f32
 {
     return @as(f32,@floatFromInt(x));
 }
+fn rectangle(x : u16,y : u16,width : u16,height : u16) rl.Rectangle
+{
+    return rl.Rectangle{ .x = @as(f32, @floatFromInt(x)), .y = @as(f32, @floatFromInt(y)), .width = @as(f32, @floatFromInt(width)), .height = @as(f32, @floatFromInt(height)) };
+}
 
 pub fn main() anyerror!void {
     // Initialization
@@ -151,6 +156,8 @@ pub fn main() anyerror!void {
 
     const rect2 = rl.Rectangle{ .x = @as(f32, @floatFromInt(10)), .y = @as(f32, @floatFromInt(10)), .width = @as(f32, @floatFromInt(300)), .height = @as(f32, @floatFromInt(100)) };
     const rect3 = rl.Rectangle{ .x = @as(f32, @floatFromInt(10)), .y = @as(f32, @floatFromInt(150)), .width = @as(f32, @floatFromInt(600)), .height = @as(f32, @floatFromInt(10)) };
+    const rect4 = rectangle(10,170,600,10);
+    const rect5 = rectangle(10,190,600,10);
     var msg_res : i32=-1;
     var state : i32=-1;
     
@@ -160,15 +167,31 @@ pub fn main() anyerror!void {
     prng = std.rand.DefaultPrng.init(seed);
 
     var value : f32 = 0;
+    var value2 : f32 = 0;
+    var value3 : f32 = 0;
 
     var emitter = Emitter{};
     try emitter.init();
 
     //const img : rl.Texture = rl.loadTexture("img.png");
-
     rl.initWindow(screenWidth, screenHeight, "raylib-zig [core] example - basic window");
     defer rl.closeWindow(); // Close window and OpenGL context
 
+    var texture : rl.Texture2D = undefined;
+    const image : rl.Image = rl.loadImage("resources/test_64.png");
+    if(image.width > 0)
+    {
+        texture = rl.loadTextureFromImage(image);
+    }
+    else
+    {
+        std.debug.print("error opening resource",.{});
+        std.posix.exit(1);
+    }
+    rl.unloadImage(image);
+    
+
+
     rl.setTargetFPS(60); // Set our game to run at 60 frames-per-second
 
     while (!rl.windowShouldClose()) { // Detect window close button or ESC key
@@ -181,6 +204,8 @@ pub fn main() anyerror!void {
                                     .a = 255,
         });
 
+
+
         if(state != 0){ 
             msg_res = rg.guiMessageBox(rect2, "Title", "question?", "Nice;Cool");
             if(msg_res > -1){
@@ -197,14 +222,16 @@ pub fn main() anyerror!void {
                     else =>{},
             }
         }
-        _ = rg.guiSlider(rect3,"0","5000",&value,ItoF(0),ItoF(5000));
+        _ = rg.guiSlider(rect3,"0","5000",&value,ItoF(0),ItoF(500));
+        _ = rg.guiSlider(rect4,"0","10",&value2,ItoF(0),ItoF(3));
+        _ = rg.guiSlider(rect5,"0","10",&value3,ItoF(0),ItoF(3));
 
         if(rl.isMouseButtonDown(rl.MouseButton.mouse_button_left))
         {
-            emitter.emit(@as(u32,@intFromFloat(value)));
+            emitter.emit(@as(u32,@intFromFloat(value)),value2,value3);
         }
 
-        emitter.update();
+        emitter.update(texture);
 
     }
 }