Create a simple Inventory system

2

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.c3p

dictionary-inventory.c3p

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.c3p

array-inventory.c3p

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Published on 13 May, 2024. Last updated 29 May, 2024

Use Dictionary

Dictionary Manuals

construct.net/en/make-games/manuals/construct-3/plugin-reference/dictionary

Level 1: How to use Dictionary

[action] Dictionary: Add key

[expression] Dictionary.Get("Apple")

{"is-c3-clipboard-data":true,"type":"events","items":[{"eventType":"block","conditions":[{"id":"on-start-of-layout","objectClass":"System"}],"actions":[{"id":"add-key","objectClass":"Dictionary","parameters":{"key":"\"Apple\"","value":"1"}},{"id":"add-key","objectClass":"Dictionary","parameters":{"key":"\"Orange\"","value":"0"}},{"id":"add-key","objectClass":"Dictionary","parameters":{"key":"\"Pear\"","value":"0"}}]},{"eventType":"block","conditions":[{"id":"on-key-pressed","objectClass":"Keyboard","parameters":{"key":37}}],"actions":[{"id":"add-key","objectClass":"Dictionary","parameters":{"key":"\"Orange\"","value":"max(Dictionary.Get(\"Orange\") - 1, 0)"}}]},{"eventType":"block","conditions":[{"id":"on-key-pressed","objectClass":"Keyboard","parameters":{"key":39}}],"actions":[{"id":"add-key","objectClass":"Dictionary","parameters":{"key":"\"Orange\"","value":"min(Dictionary.Get(\"Orange\") + 1,  5)"}}]}]}

Level 2: How to Load Dictionary Data

[condition] Dictionary: For each key

[expression] Dictionary.CurrentKey

[expression] Dictionary.CurrentValue

Level 3: Display Dictionary Data

The key here is that by add an instance variable to Slot object, it is used to know whether the item already exists.

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