La programmation événementielle

Le bloc est un évenement comme les autres, il est simplement déclenché au démarrage. Modifiez l'algorithme pour :

réinitialiser à 0 la variable au démarrage.
Utiliser pour que le véhicule avance d'une case dès que la "flèche du haut" est pressée et augmente de 1 la variable distance.

{"options": {"blocks": {"base_simplecalculus": {"output": "Number", "colour": 260, "tooltip": "Effectue un calcul simple", "inputs": [{"type": "value_input", "fields": [], "align": "left", "name": "value_1", "check": "Number"}, {"type": "dummy_input", "fields": [{"name": "op", "values": [["+", "PLUS"], ["-", "MINUS"], ["\u00d7", "TIMES"], ["\u00f7", "DIV"]], "type": "dropdown"}], "align": "left"}, {"type": "value_input", "fields": [], "align": "left", "name": "value_2", "check": "Number"}], "inline": true}, "road_onkeyright": {"next_statement": true, "colour": 65, "inputs": [{"type": "dummy_input", "fields": [{"text": "Lorsque la touche \u27a1 est press\u00e9e", "type": "text"}], "align": "left"}], "creatable": false, "on_event": "on_key_right"}, "road_onkeyleft": {"next_statement": true, "colour": 65, "inputs": [{"type": "dummy_input", "fields": [{"text": "Lorsque la touche \u2b05 est press\u00e9e", "type": "text"}], "align": "left"}], "creatable": false, "on_event": "on_key_left"}, "road_forward": {"previous_statement": true, "next_statement": true, "colour": 160, "tooltip": "Avancer d'une case tout droit", "inputs": [{"type": "dummy_input", "fields": [{"text": "Avancer de 1 case", "type": "text"}], "align": "left"}]}, "road_turnright": {"previous_statement": true, "next_statement": true, "colour": 160, "tooltip": "Tourner \u00e0 droite", "inputs": [{"type": "dummy_input", "fields": [{"text": "Tourner \u00e0 droite \u21b7", "type": "text"}], "align": "left"}]}, "base_numberinput": {"output": "Number", "colour": 260, "tooltip": "Fourni un nombre", "inputs": [{"type": "dummy_input", "fields": [{"name": "value", "default": 0.0, "type": "number_input"}], "align": "left"}]}, "base_varvalue": {"output": true, "colour": 330, "tooltip": "Fourni la valeur d'une variable", "inputs": [{"type": "dummy_input", "fields": [{"name": "var_name", "default": "x", "type": "variable"}], "align": "left"}]}, "base_setvar": {"previous_statement": true, "next_statement": true, "colour": 330, "tooltip": "Affecter une valeur \u00e0 une variable", "inputs": [{"type": "value_input", "fields": [{"text": "mettre", "type": "text"}, {"name": "var_name", "default": "x", "type": "variable"}, {"text": "\u00e0", "type": "text"}], "align": "left", "name": "value", "check": null}]}, "base_start": {"next_statement": true, "colour": 65, "tooltip": "D\u00e9marrage de l'algorithme", "inputs": [{"type": "dummy_input", "fields": [{"text": "Au d\u00e9marrage", "type": "text"}], "align": "left"}], "creatable": false, "on_event": "start"}, "road_turnleft": {"previous_statement": true, "next_statement": true, "colour": 160, "tooltip": "Tourner \u00e0 gauche", "inputs": [{"type": "dummy_input", "fields": [{"text": "Tourner \u00e0 gauche \u21b6", "type": "text"}], "align": "left"}]}, "road_onkeyup": {"next_statement": true, "colour": 65, "inputs": [{"type": "dummy_input", "fields": [{"text": "Lorsque la touche \u2b06 est press\u00e9e", "type": "text"}], "align": "left"}], "creatable": false, "on_event": "on_key_up"}}, "toolbox": [{"type": "base_numberinput", "value": 1.0}, {"type": "base_setvar", "var_name": "distance"}, {"type": "base_simplecalculus"}, {"type": "base_varvalue", "var_name": "distance"}, {"type": "road_forward"}, {"type": "road_turnleft"}, {"type": "road_turnright"}]}, "ast": [[{"type": "base_start", "deletable": false, "editable": false}], [{"type": "road_onkeyup", "deletable": false}], [{"type": "road_onkeyleft", "deletable": false}, {"type": "road_turnleft"}], [{"type": "road_onkeyright", "deletable": false}, {"type": "road_turnright"}]]}