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Học Actionscript 3.0 - p 9

Events 1 2 3 4 5 6 7 8 9 10 11 12 function onMoveLeft(evt:MouseEvent):void { box.x -= 20; } function onMoveRight(evt:MouseEvent):void { box.x += 20; } function onMoveUp(evt:MouseEvent):void { box.y -= 20; } function onMoveDown(evt:MouseEvent):void { box.y += 20; } Once the functions are defined, all you have to do is add the listeners to the appropriate buttons. 13 14 15 16 move_left_btn.addEventListener(MouseEvent.MOUSE_UP, onMoveLeft); move_right_btn.addEventListener(MouseEvent.MOUSE_UP, onMoveRight); move_up_btn.addEventListener(MouseEvent.MOUSE_UP, onMoveUp); move_down_btn.addEventListener(MouseEvent.MOUSE_UP, onMoveDown); This simple process is then repeated for each of the buttons on stage. The remaining script collects the aforementioned properties and event listeners to complete the demo pictured in Figure 3-3. The resulting file wires up one or more buttons for each property, all of which manipulate the movie clip in the center of. | Events 1 function onMoveLeft evt MouseEvent void 2 box.x - 20 3 4 function onMoveRight evt MouseEvent void 5 box.x 20 6 7 function onMoveUp evt MouseEvent void 8 box.y - 20 9 10 function onMoveDown evt MouseEvent void 11 box.y 20 12 Once the functions are defined all you have to do is add the listeners to the appropriate buttons. 13 move_left_btn.addEventListener MouseEvent.MOUSE_UP onMoveLeft 14 move_right_btn.addEventListener MouseEvent.MOUSE_UP onMoveRight 15 move_up_btn.addEventListener MouseEvent.MOUSE_UP onMoveUp 16 move_down_btn.addEventListener MouseEvent.MOUSE_UP onMoveDown This simple process is then repeated for each of the buttons on stage. The remaining script collects the aforementioned properties and event listeners to complete the demo pictured in Figure 3-3. The resulting file wires up one or more buttons for each property all of which manipulate the movie clip in the center of the stage. The finished script can be found in the prop_events. fla source file. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 scale_up_btn.addEventListener MouseEvent.MOUSE_UP onScaleUp scale_down_btn.addEventListener MouseEvent.MOUSE_UP onScaleDown rotate_left_btn.addEventListener MouseEvent.MOUSE_UP onRotateLeft rotate_right_btn.addEventListener MouseEvent.MOUSE_UP onRotateRight fade_in_btn.addEventListener MouseEvent.MOUSE_UP onFadeln fade_out_btn.addEventListener MouseEvent.MOUSE_UP onFadeOut toggle_visible_btn.addEventListener MouseEvent.MOUSE_UP onToggleVisible function onScaleUp evt MouseEvent void box.scaleX 0.2 box.scaleY 0.2 function onScaleDown evt MouseEvent void box.scaleX - 0.2 box.scaleY - 0.2 function onRotateLeft evt MouseEvent void box.rotation - 20 function onRotateRight evt MouseEvent void box.rotation 20 function onFadeIn evt MouseEvent void box.alpha 0.2 Chapter 3 Properties Methods and Events Download from Wow eBook www.wowebook.com Methods 49 function onFadeOut evt MouseEvent void 50 box.alpha - 0.2 .