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Download "Trigonometry Cannon"(5 sprites and 13 scripts) and open it in Scratch Project Notes
There always seems to be interest in things that shoot. Here's how to do it with the new Trig functions.
Use Space to shoot, Up/Down to control the barrel angle, Right/Left to roll the cannon around. The X key can be used to clear the cannonball paths.
This is a cannon with the projectile motion calculated using the new Trig functioons. The tip of the Barrel is also located using the Trig functions so that the Ball can be placed at the Barrel tip when it is fired.
Wind is accounted for as a constant change to horizontal velocity. This is not a very realistic model, but it looks good enough for animation.
In addition to changing the barrel angle and the wind, the trajectory can be further modified by changing the inital velocity or the acceleration due to gravity (Ay) in the scripts.
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Haha, you made it catch on fire if you hit yourself!
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The pop noise the cannon makes is so innocent...
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I have been trying to do this for so long. You did a great job of doing it. I will download,give you a favorite and a love it.
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(link to project) found this re remix of your project.. also check out background 19 by the same person..
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nice I like it
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cool game
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BLUE CLAYMAN, THAT IS NOT A GLITCH.
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I was wondering if you would like to enter this in the Scratch Awards for Best Tool. reply here: (link to gallery) and enter it here: (link to gallery)
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lol commited suicide!! (on the game not in real life)
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That's not a glitch, that's a feature! The cannonball goes straight up....then comes straight down and blows you up.
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I found a glitch: If you aim up high enoug, the cannon blows up! ;-)
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AAAAAAH I SHOT MYSELF! lol
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Thanks! I just added that feature yesterday.
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I like the way when you aim at the gun the gun blows up!
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lol i shot myselve i shot strait up
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That's a good idea!
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Cool, I'm doing about trigonometry in school. I think if the ball hits the truck it should blow up or something :)
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hey this is really cool i made a cool arch pattern
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I MADE ART!!!
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YAY
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you can change the ball wind vx during flight to make a twist in teh curve, great job!!
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thats cool you can make pretty nice looking patterns
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Cool
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Like this
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Hey, I made a remix of this project with all the trig functions taken out. I used the move block to get the initial x and y velocities and it's very similar to yours :) (link to project)
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There is an easyier way (link to project) and just to let you know i am still impressed that you can do trig but I made that project not useing trig and I find my project is a little more fun. it is still cool that you can use trig and I do not want to offend
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and how you know how to do this ill never know
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Very well coded :)
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can I ask you for some help paddle2see? I need to know howw to speed up this trig formula. (link to project)
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nice
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sound effects now! cool.. found an intresting tank project (link to project)
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Cool...I love catapults! My son and I made one a while back too. It shot softballs and was a lot of fun, even though it was a little scary.
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For science class last year i made a catapult that worked sorta like this
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5...5....5...5...5...??
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cool affect!
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booooooooooooooooooooooooooooooo!
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well done
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Well, this was never intended as a stand-alone project. I thought of it more as something that people could use in their own projects. But maybe I should dress it up a bit...
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Very good! I think the shell-holes could be marked on the ground (or at a target). The trajectory could also be marked as a ghost of the ball. I loved it
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it could of had a aim but still very good
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need sounds go to find sounds .com!!
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(link to project)
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um.. you seem to have collected a slightly offensive inappropriate tag.
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Hey really cool I love it! Oh, and I updated my fairy game.(link to project)
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Cool, and useful.
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Ah! You mean Perspective Cannon! That would be a pretty good trick...not off the top of my head, I'll have to give that some thought.
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Can you swivel the canon around so that it fires into the depth of the picture rather than one side to another?
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Great Project! Sorry I had to add you to my friends list again anything gets all kooky and weird so things get messed up!
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...It's a very strong wind! Or maybe very light cannonballs...
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nice wind effects!
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Cannon!!!
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