minecraft-pi-docker/mods/src/touch/touch.cpp

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#include <libreborn/libreborn.h>
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#include <mods/feature/feature.h>
#include <mods/init/init.h>
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#include <symbols/minecraft.h>
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// Enable Touch GUI
static int32_t Minecraft_isTouchscreen_injection(__attribute__((unused)) unsigned char *minecraft) {
return 1;
}
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// IngameBlockSelectionScreen Memory Allocation Override
static unsigned char *operator_new_IngameBlockSelectionScreen_injection(__attribute__((unused)) uint32_t size) {
return (unsigned char *) ::operator new(TOUCH_INGAME_BLOCK_SELECTION_SCREEN_SIZE);
}
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// Improved Button Hover Behavior
static int32_t Button_hovered_injection(__attribute__((unused)) unsigned char *button, __attribute__((unused)) unsigned char *minecraft, __attribute__((unused)) int32_t click_x, __attribute__((unused)) int32_t click_y) {
// Get Mouse Position
int32_t x = (*Mouse_getX)() * (*InvGuiScale);
int32_t y = (*Mouse_getY)() * (*InvGuiScale);
// Get Button Position
int32_t button_x1 = *(int32_t *) (button + Button_x_property_offset);
int32_t button_y1 = *(int32_t *) (button + Button_y_property_offset);
int32_t button_x2 = button_x1 + (*(int32_t *) (button + Button_width_property_offset));
int32_t button_y2 = button_y1 + (*(int32_t *) (button + Button_height_property_offset));
// Check
return x >= button_x1 && x <= button_x2 && y >= button_y1 && y <= button_y2;
}
static void LargeImageButton_render_GuiComponent_drawCenteredString_injection(unsigned char *component, unsigned char *font, std::string const& text, int32_t x, int32_t y, int32_t color) {
// Change Color On Hover
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if (color == 0xe0e0e0 && Button_hovered_injection(component, NULL, 0, 0)) {
color = 0xffffa0;
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}
// Call Original Method
(*GuiComponent_drawCenteredString)(component, font, text, x, y, color);
}
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// Init
void init_touch() {
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int touch_gui = feature_has("Full Touch GUI", server_disabled);
int touch_buttons = touch_gui;
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if (touch_gui) {
// Main UI
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overwrite((void *) Minecraft_isTouchscreen, (void *) Minecraft_isTouchscreen_injection);
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// Force Correct Toolbar Size
unsigned char toolbar_patch[4] = {0x01, 0x00, 0x50, 0xe3}; // "cmp r0, #0x1"
patch((void *) 0x257b0, toolbar_patch);
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} else {
// Force Touch Inventory
if (feature_has("Force Touch GUI Inventory", server_disabled)) {
overwrite_call((void *) 0x2943c, (void *) operator_new_IngameBlockSelectionScreen_injection);
overwrite_call((void *) 0x29444, (void *) Touch_IngameBlockSelectionScreen);
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// Make "Craft" And "Armor" Buttons Use Classic GUI Style (Button And TButton Have The Same Size)
overwrite_call((void *) 0x3b060, (void *) Button);
overwrite_call((void *) 0x3b08c, (void *) Button);
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}
// Force Touch Button Behavior
if (feature_has("Force Touch GUI Button Behavior", server_disabled)) {
touch_buttons = 1;
overwrite_call((void *) 0x1baf4, (void *) Minecraft_isTouchscreen_injection);
overwrite_call((void *) 0x1be40, (void *) Minecraft_isTouchscreen_injection);
overwrite_call((void *) 0x1c470, (void *) Minecraft_isTouchscreen_injection);
overwrite_call((void *) 0x1e868, (void *) Minecraft_isTouchscreen_injection);
overwrite_call((void *) 0x290b8, (void *) Minecraft_isTouchscreen_injection);
overwrite_call((void *) 0x29168, (void *) Minecraft_isTouchscreen_injection);
overwrite_call((void *) 0x3e314, (void *) Minecraft_isTouchscreen_injection);
overwrite_call((void *) 0x2cbc0, (void *) Minecraft_isTouchscreen_injection);
overwrite_call((void *) 0x2ea7c, (void *) Minecraft_isTouchscreen_injection);
overwrite_call((void *) 0x4a438, (void *) Minecraft_isTouchscreen_injection);
}
}
// Improved Button Hover Behavior
if (touch_buttons && feature_has("Improved Button Hover Behavior", server_disabled)) {
overwrite((void *) Button_hovered, (void *) Button_hovered_injection);
overwrite_call((void *) 0x1ebd4, (void *) LargeImageButton_render_GuiComponent_drawCenteredString_injection);
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}
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// Show Block Outlines
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int block_outlines = feature_has("Show Block Outlines", 0);
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unsigned char outline_patch[4] = {(unsigned char) (block_outlines ? !touch_gui : touch_gui), 0x00, 0x50, 0xe3}; // "cmp r0, #0x1" or "cmp r0, #0x0"
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patch((void *) 0x4a210, outline_patch);
}