Optimize script

examples/Platformer/script.zs

@@ -8,6 +8,7 @@ float g_jumpHeight = 20
 float g_currPlayerSpeed = 400
 
 bool g_running = false
+bool g_colliding = false
 
 float g_gravitySpeed = -86
 
@@ -17,7 +18,7 @@ func Main()
 {
 	//SplitThread(ThreadedFunction())
 	
-	// Immediately creates the window, then Start(), then the game loop. The game loop calls Update() every frame
+	// Immediately creates the window, then runs Start(), then the game loop. The game loop calls Update() every frame
 	ZS.Graphics.Init("Platformer game", g_screenw, g_screenh, g_resolutionScale)
 }
 
@@ -28,33 +29,20 @@ func ThreadedFunction()
 
 func Start()
 {
-	float centerX = g_screenw / 2
+	global Vec2 g_screencenter = NVec2(g_screenw / 2, g_screenh / 2)
-	float centerY = g_screenh / 2
-	global Vec2 g_screencenter = NVec2(centerX, centerY)
 	
-	Vec2 playerPos = g_screencenter
+	global Sprite g_playerSprite = ZS.Graphics.Sprite("./mariostill.png", g_screencenter, NVec2(16, 16), 0)
-	Vec2 playerScale = NVec2(16, 16)
-	global Sprite g_playerSprite = ZS.Graphics.Sprite("./mariostill.png", playerPos, playerScale, 0)
 	
-	Vec2 groundPos = NVec2(g_screencenter.x, 192)
+	global Sprite g_groundSprite = ZS.Graphics.Sprite("./square.png", NVec2(g_screencenter.x, 192), NVec2(256, 16), 0)
-	Vec2 groundScale = NVec2(256, 16)
-	global Sprite g_groundSprite = ZS.Graphics.Sprite("./square.png", groundPos, groundScale, 0)
 	
-	Vec2 instructionsPos = NVec2(centerOfScreen.x, centerOfScreen.y)
+	global Text g_instructionsText = ZS.Graphics.Text("Use Arrow Keys or WASD to Move and Spacebar to Jump", "./arial.ttf", NVec2(centerOfScreen.x, centerOfScreen.y), 11, 0, 255, 255, 255)
-	global Text g_instructionsText = ZS.Graphics.Text("Use Arrow Keys or WASD to Move and Spacebar to Jump", "./arial.ttf", instructionsPos, 20, 0, 255, 255, 255)
 	
 	global Vec2 g_playerTargetPosition = playerPos
-	
-	int i = 0
-	while i < 10 {
-		i += 1
-		print "while iter : " + i
-	}
 }
 
 func Update(deltaTime) {
 	float fps = 1 / deltaTime
-	print "FPS: " + fps
+	print "FPS: " + fps + "\r"
 	//TestInclude()
 	
 	//// Test automatic conversion from bool to int
@@ -67,38 +55,38 @@ func Update(deltaTime) {
 	if g_running == true {
 		g_currPlayerSpeed = g_playerRunSpeed
 	}
-	if g_running == false
+	if g_running == false {
-	{
 		g_currPlayerSpeed = g_playerWalkSpeed
 	}
 
 	// Move Left And Right
 	if GetKey("A") == true
 	{
-		float newY = g_playerSprite.position.y
-		
 		float newX = g_playerTargetPosition.x - g_currPlayerSpeed * deltaTime
-		g_playerTargetPosition = NVec2(newX, newY)
+		g_playerTargetPosition = NVec2(newX, g_playerSprite.position.y)
 	}
 	if GetKey("D") == true
 	{		
-		float newY = g_playerSprite.position.y
-		
 		float newX = g_playerTargetPosition.x + g_currPlayerSpeed * deltaTime
-		g_playerTargetPosition = NVec2(newX, newY)
+		g_playerTargetPosition = NVec2(newX, g_playerSprite.position.y)
 	}
-	// Lerps from old position to destination smoothly
-	float oldX = g_playerSprite.position.x
-	float newX = g_playerTargetPosition.x
-	float stopSpeed = deltaTime * 7
-	float lerpedX = Lerp(oldX, newX, stopSpeed)
-	g_playerSprite.position = NVec2(lerpedX, g_playerTargetPosition.y)
 	
+	// Apply gravity
+	g_colliding = Colliding(g_playerSprite, g_groundSprite)
+	if g_colliding == false {
+		g_playerTargetPosition.y -= deltaTime * g_gravitySpeed
+	}
+	
+	// Lerps from old position to destination smoothly
+	float stopSpeed = deltaTime * 7
+	float lerpedX = Lerp(g_playerSprite.position.x, g_playerTargetPosition.x, stopSpeed)
+	g_playerSprite.position = NVec2(lerpedX, g_playerTargetPosition.y)
 	
 	// Finally draws all of the sprites
 	ZS.Graphics.Draw(g_playerSprite)
 	ZS.Graphics.Draw(g_groundSprite)
 	
+	// Draw the text
 	ZS.Graphics.DrawText(g_instructionsText)
 }